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authorMicael Karlberg <[email protected]>2011-03-17 12:19:57 +0100
committerMicael Karlberg <[email protected]>2011-03-17 12:19:57 +0100
commit6b1d1ab0a27e9ed08a626e18319beb91d0a0d5ce (patch)
tree82e54daec07390bb4cad8b279e0e8d1fd0170b78 /lib/dialyzer/test/options1_tests_SUITE_data
parent4f42486c2f94860c1aa8152562760b6a2aa7c5cb (diff)
parentf861b4fdb3fd39e35f2951c53a73b30a98c7f973 (diff)
downloadotp-6b1d1ab0a27e9ed08a626e18319beb91d0a0d5ce.tar.gz
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Merge branch 'dev' into bmk/inets/ftp/missing_spec_causes_dialyxer_problems/OTP-9114
Also fixed a bunch of "end-years" (was 2010 but should have been 2011, which the commit hook not happy with).
Diffstat (limited to 'lib/dialyzer/test/options1_tests_SUITE_data')
-rw-r--r--lib/dialyzer/test/options1_tests_SUITE_data/dialyzer_options2
-rw-r--r--lib/dialyzer/test/options1_tests_SUITE_data/my_include/CVS/Entries3
-rw-r--r--lib/dialyzer/test/options1_tests_SUITE_data/my_include/CVS/Repository1
-rw-r--r--lib/dialyzer/test/options1_tests_SUITE_data/my_include/CVS/Root1
-rw-r--r--lib/dialyzer/test/options1_tests_SUITE_data/my_include/erl_bits.hrl43
-rw-r--r--lib/dialyzer/test/options1_tests_SUITE_data/my_include/erl_compile.hrl42
-rw-r--r--lib/dialyzer/test/options1_tests_SUITE_data/results/compiler35
-rw-r--r--lib/dialyzer/test/options1_tests_SUITE_data/src/compiler/beam_asm.erl358
-rw-r--r--lib/dialyzer/test/options1_tests_SUITE_data/src/compiler/beam_block.erl601
-rw-r--r--lib/dialyzer/test/options1_tests_SUITE_data/src/compiler/beam_bool.erl617
-rw-r--r--lib/dialyzer/test/options1_tests_SUITE_data/src/compiler/beam_clean.erl232
-rw-r--r--lib/dialyzer/test/options1_tests_SUITE_data/src/compiler/beam_dict.erl196
-rw-r--r--lib/dialyzer/test/options1_tests_SUITE_data/src/compiler/beam_disasm.erl964
-rw-r--r--lib/dialyzer/test/options1_tests_SUITE_data/src/compiler/beam_flatten.erl137
-rw-r--r--lib/dialyzer/test/options1_tests_SUITE_data/src/compiler/beam_jump.erl477
-rw-r--r--lib/dialyzer/test/options1_tests_SUITE_data/src/compiler/beam_listing.erl117
-rw-r--r--lib/dialyzer/test/options1_tests_SUITE_data/src/compiler/beam_opcodes.erl240
-rw-r--r--lib/dialyzer/test/options1_tests_SUITE_data/src/compiler/beam_opcodes.hrl12
-rw-r--r--lib/dialyzer/test/options1_tests_SUITE_data/src/compiler/beam_type.erl551
-rw-r--r--lib/dialyzer/test/options1_tests_SUITE_data/src/compiler/beam_validator.erl1022
-rw-r--r--lib/dialyzer/test/options1_tests_SUITE_data/src/compiler/cerl.erl4169
-rw-r--r--lib/dialyzer/test/options1_tests_SUITE_data/src/compiler/cerl_clauses.erl409
-rw-r--r--lib/dialyzer/test/options1_tests_SUITE_data/src/compiler/cerl_inline.erl2762
-rw-r--r--lib/dialyzer/test/options1_tests_SUITE_data/src/compiler/cerl_trees.erl801
-rw-r--r--lib/dialyzer/test/options1_tests_SUITE_data/src/compiler/compile.erl1109
-rw-r--r--lib/dialyzer/test/options1_tests_SUITE_data/src/compiler/core_lib.erl509
-rw-r--r--lib/dialyzer/test/options1_tests_SUITE_data/src/compiler/core_lint.erl515
-rw-r--r--lib/dialyzer/test/options1_tests_SUITE_data/src/compiler/core_parse.erl4911
-rw-r--r--lib/dialyzer/test/options1_tests_SUITE_data/src/compiler/core_parse.hrl111
-rw-r--r--lib/dialyzer/test/options1_tests_SUITE_data/src/compiler/core_pp.erl430
-rw-r--r--lib/dialyzer/test/options1_tests_SUITE_data/src/compiler/core_scan.erl495
-rw-r--r--lib/dialyzer/test/options1_tests_SUITE_data/src/compiler/erl_bifs.erl486
-rw-r--r--lib/dialyzer/test/options1_tests_SUITE_data/src/compiler/rec_env.erl611
-rw-r--r--lib/dialyzer/test/options1_tests_SUITE_data/src/compiler/sys_expand_pmod.erl425
-rw-r--r--lib/dialyzer/test/options1_tests_SUITE_data/src/compiler/sys_pre_attributes.erl212
-rw-r--r--lib/dialyzer/test/options1_tests_SUITE_data/src/compiler/sys_pre_expand.erl1026
-rw-r--r--lib/dialyzer/test/options1_tests_SUITE_data/src/compiler/v3_codegen.erl1755
-rw-r--r--lib/dialyzer/test/options1_tests_SUITE_data/src/compiler/v3_core.erl1320
-rw-r--r--lib/dialyzer/test/options1_tests_SUITE_data/src/compiler/v3_kernel.erl1568
-rw-r--r--lib/dialyzer/test/options1_tests_SUITE_data/src/compiler/v3_kernel.hrl77
-rw-r--r--lib/dialyzer/test/options1_tests_SUITE_data/src/compiler/v3_kernel_pp.erl444
-rw-r--r--lib/dialyzer/test/options1_tests_SUITE_data/src/compiler/v3_life.erl448
-rw-r--r--lib/dialyzer/test/options1_tests_SUITE_data/src/compiler/v3_life.hrl25
43 files changed, 30269 insertions, 0 deletions
diff --git a/lib/dialyzer/test/options1_tests_SUITE_data/dialyzer_options b/lib/dialyzer/test/options1_tests_SUITE_data/dialyzer_options
new file mode 100644
index 0000000000..c612e77d3e
--- /dev/null
+++ b/lib/dialyzer/test/options1_tests_SUITE_data/dialyzer_options
@@ -0,0 +1,2 @@
+{dialyzer_options, [{include_dirs, ["my_include"]}, {defines, [{'COMPILER_VSN', 42}]}, {warnings, [no_improper_lists]}]}.
+{time_limit, 30}.
diff --git a/lib/dialyzer/test/options1_tests_SUITE_data/my_include/CVS/Entries b/lib/dialyzer/test/options1_tests_SUITE_data/my_include/CVS/Entries
new file mode 100644
index 0000000000..513d4a315a
--- /dev/null
+++ b/lib/dialyzer/test/options1_tests_SUITE_data/my_include/CVS/Entries
@@ -0,0 +1,3 @@
+/erl_bits.hrl/1.1/Wed Dec 17 09:53:40 2008//
+/erl_compile.hrl/1.1/Wed Dec 17 09:53:40 2008//
+D
diff --git a/lib/dialyzer/test/options1_tests_SUITE_data/my_include/CVS/Repository b/lib/dialyzer/test/options1_tests_SUITE_data/my_include/CVS/Repository
new file mode 100644
index 0000000000..1c6511fec3
--- /dev/null
+++ b/lib/dialyzer/test/options1_tests_SUITE_data/my_include/CVS/Repository
@@ -0,0 +1 @@
+dialyzer_tests/option_tests/compiler/my_include
diff --git a/lib/dialyzer/test/options1_tests_SUITE_data/my_include/CVS/Root b/lib/dialyzer/test/options1_tests_SUITE_data/my_include/CVS/Root
new file mode 100644
index 0000000000..f6cdd6158b
--- /dev/null
+++ b/lib/dialyzer/test/options1_tests_SUITE_data/my_include/CVS/Root
@@ -0,0 +1 @@
+:pserver:[email protected]:/hipe
diff --git a/lib/dialyzer/test/options1_tests_SUITE_data/my_include/erl_bits.hrl b/lib/dialyzer/test/options1_tests_SUITE_data/my_include/erl_bits.hrl
new file mode 100644
index 0000000000..96d5cec268
--- /dev/null
+++ b/lib/dialyzer/test/options1_tests_SUITE_data/my_include/erl_bits.hrl
@@ -0,0 +1,43 @@
+%% ``The contents of this file are subject to the Erlang Public License,
+%% Version 1.0, (the "License"); you may not use this file except in
+%% compliance with the License. You may obtain a copy of the License at
+%% http://www.erlang.org/EPL1_0.txt
+%%
+%% Software distributed under the License is distributed on an "AS IS"
+%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
+%% the License for the specific language governing rights and limitations
+%% under the License.
+%%
+%% The Original Code is Erlang-4.7.3, December, 1998.
+%%
+%% The Initial Developer of the Original Code is Ericsson Telecom
+%% AB. Portions created by Ericsson are Copyright (C), 1998, Ericsson
+%% Telecom AB. All Rights Reserved.
+%%
+%% Contributor(s): ______________________________________.''
+%%
+%% This is an -*- erlang -*- file.
+%% Generic compiler options, passed from the erl_compile module.
+
+-record(bittype, {
+ type, %% integer/float/binary
+ unit, %% element unit
+ sign, %% signed/unsigned
+ endian %% big/little
+ }).
+
+-record(bitdefault, {
+ integer, %% default type for integer
+ float, %% default type for float
+ binary %% default type for binary
+ }).
+
+%%% (From config.hrl in the bitsyntax branch.)
+-define(SYS_ENDIAN, big).
+-define(SIZEOF_CHAR, 1).
+-define(SIZEOF_DOUBLE, 8).
+-define(SIZEOF_FLOAT, 4).
+-define(SIZEOF_INT, 4).
+-define(SIZEOF_LONG, 4).
+-define(SIZEOF_LONG_LONG, 8).
+-define(SIZEOF_SHORT, 2).
diff --git a/lib/dialyzer/test/options1_tests_SUITE_data/my_include/erl_compile.hrl b/lib/dialyzer/test/options1_tests_SUITE_data/my_include/erl_compile.hrl
new file mode 100644
index 0000000000..ef2b68ac9a
--- /dev/null
+++ b/lib/dialyzer/test/options1_tests_SUITE_data/my_include/erl_compile.hrl
@@ -0,0 +1,42 @@
+%% ``The contents of this file are subject to the Erlang Public License,
+%% Version 1.1, (the "License"); you may not use this file except in
+%% compliance with the License. You should have received a copy of the
+%% Erlang Public License along with this software. If not, it can be
+%% retrieved via the world wide web at http://www.erlang.org/.
+%%
+%% Software distributed under the License is distributed on an "AS IS"
+%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
+%% the License for the specific language governing rights and limitations
+%% under the License.
+%%
+%% The Initial Developer of the Original Code is Ericsson Utvecklings AB.
+%% Portions created by Ericsson are Copyright 1999, Ericsson Utvecklings
+%% AB. All Rights Reserved.''
+%%
+%% $Id: erl_compile.hrl,v 1.1 2008/12/17 09:53:40 mikpe Exp $
+%%
+
+%% Generic compiler options, passed from the erl_compile module.
+
+-record(options,
+ {includes=[], % Include paths (list of absolute
+ % directory names).
+ outdir=".", % Directory for result (absolute
+ % path).
+ output_type=undefined, % Type of output file (atom).
+ defines=[], % Preprocessor defines. Each
+ % element is an atom (the name to
+ % define), or a {Name, Value}
+ % tuple.
+ warning=1, % Warning level (0 - no
+ % warnings, 1 - standard level,
+ % 2, 3, ... - more warnings).
+ verbose=false, % Verbose (true/false).
+ optimize=999, % Optimize options.
+ specific=[], % Compiler specific options.
+ outfile="", % Name of output file (internal
+ % use in erl_compile.erl).
+ cwd % Current working directory
+ % for erlc.
+ }).
+
diff --git a/lib/dialyzer/test/options1_tests_SUITE_data/results/compiler b/lib/dialyzer/test/options1_tests_SUITE_data/results/compiler
new file mode 100644
index 0000000000..924ef389df
--- /dev/null
+++ b/lib/dialyzer/test/options1_tests_SUITE_data/results/compiler
@@ -0,0 +1,35 @@
+
+beam_asm.erl:32: The pattern {'error', Error} can never match the type <<_:64,_:_*8>>
+beam_bool.erl:193: The pattern {[], _} can never match the type {[{_,_,_,_},...],[any()]}
+beam_bool.erl:510: The pattern [{'set', [Dst], _, _}, {'%live', _}] can never match the type [{_,_,_,_}]
+beam_disasm.erl:537: The variable X can never match since previous clauses completely covered the type 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7
+beam_type.erl:284: The pattern <'pi', 0> can never match the type <_,1 | 2>
+beam_validator.erl:396: The pattern <{'jump', {'f', _}}, Vst = {'vst', 'none', _}> can never match the type <_,#vst{current::#st{ct::[]}}>
+beam_validator.erl:690: The pattern <'term', OldT> can never match the type <{'tuple',[any(),...]},_>
+beam_validator.erl:692: Clause guard cannot succeed. The pattern <NewT = {Type, New}, OldT = {_, Old}> was matched against the type <{'tuple',[any(),...]},_>
+beam_validator.erl:699: Clause guard cannot succeed. The pattern <NewT = {Type, _}, 'number'> was matched against the type <{'tuple',[any(),...]},_>
+beam_validator.erl:702: The pattern <'number', OldT = {Type, _}> can never match the type <{'tuple',[any(),...]},_>
+beam_validator.erl:705: The pattern <'bool', {'atom', A}> can never match the type <{'tuple',[any(),...]},_>
+beam_validator.erl:707: The pattern <{'atom', A}, 'bool'> can never match the type <{'tuple',[any(),...]},_>
+beam_validator.erl:713: Guard test is_integer(Sz::[any(),...]) can never succeed
+beam_validator.erl:727: Function upgrade_bool/1 will never be called
+cerl_inline.erl:190: The pattern 'true' can never match the type 'false'
+cerl_inline.erl:219: The pattern 'true' can never match the type 'false'
+cerl_inline.erl:230: The pattern 'true' can never match the type 'false'
+cerl_inline.erl:2333: The pattern 'true' can never match the type 'false'
+cerl_inline.erl:2355: The pattern 'true' can never match the type 'false'
+cerl_inline.erl:238: The pattern 'true' can never match the type 'false'
+cerl_inline.erl:2436: Function filename/1 will never be called
+cerl_inline.erl:2700: The pattern 'true' can never match the type 'false'
+cerl_inline.erl:2730: The pattern <{F, L, D}, Vs> can never match the type <[1..255,...],[any()]>
+cerl_inline.erl:2738: The pattern <{F, L, D}, Vs> can never match the type <[1..255,...],[any()]>
+cerl_inline.erl:2750: The pattern <{[], L, D}, Vs> can never match the type <[1..255,...],[any()]>
+cerl_inline.erl:2752: The pattern <{[], _L, D}, Vs> can never match the type <[1..255,...],[any()]>
+cerl_inline.erl:2754: The pattern <{F, L, D}, Vs> can never match the type <[1..255,...],[any()]>
+cerl_inline.erl:2756: The pattern <{F, _L, D}, Vs> can never match the type <[1..255,...],[any()]>
+compile.erl:788: The pattern {'error', Es} can never match the type {'ok',<<_:64,_:_*8>>}
+core_lint.erl:473: The pattern <{'c_atom', _, 'all'}, 'binary', _Def, St> can never match the type <_,#c_nil{} | {'c_atom' | 'c_char' | 'c_float' | 'c_int' | 'c_string' | 'c_tuple',_,_} | #c_cons{hd::#c_nil{} | {'c_atom' | 'c_char' | 'c_float' | 'c_int' | 'c_string' | 'c_tuple',_,_} | #c_cons{hd::{_,_} | {_,_,_} | {_,_,_,_},tl::{_,_} | {_,_,_} | {_,_,_,_}},tl::#c_nil{} | {'c_atom' | 'c_char' | 'c_float' | 'c_int' | 'c_string' | 'c_tuple',_,_} | #c_cons{hd::{_,_} | {_,_,_} | {_,_,_,_},tl::{_,_} | {_,_,_} | {_,_,_,_}}},[any()],_>
+core_lint.erl:505: The pattern <_Req, 'unknown', St> can never match the type <non_neg_integer(),non_neg_integer(),_>
+v3_codegen.erl:1569: The call v3_codegen:load_reg_1(V::any(),I::0,Rs::any(),pos_integer()) will never return since it differs in the 4th argument from the success typing arguments: (any(),0,maybe_improper_list(),0)
+v3_codegen.erl:1571: The call v3_codegen:load_reg_1(V::any(),I::0,[],pos_integer()) will never return since it differs in the 4th argument from the success typing arguments: (any(),0,maybe_improper_list(),0)
+v3_core.erl:646: The pattern <Prim = {'iprimop', _, _, _}, St> can never match the type <#c_nil{anno::[any(),...]} | {'c_atom' | 'c_char' | 'c_float' | 'c_int' | 'c_string' | 'c_tuple' | 'c_var' | 'ibinary' | 'icatch' | 'ireceive1',[any(),...] | {_,_,_,_},_} | #c_cons{anno::[any(),...]} | #c_fname{anno::[any(),...]} | #iletrec{anno::{_,_,_,_},defs::[any(),...],body::[any(),...]} | #icase{anno::{_,_,_,_},args::[any()],clauses::[any()],fc::{_,_,_,_,_,_}} | #ireceive2{anno::{_,_,_,_},clauses::[any()],action::[any()]} | #ifun{anno::{_,_,_,_},id::[any(),...],vars::[any()],clauses::[any(),...],fc::{_,_,_,_,_,_}} | #imatch{anno::{_,_,_,_},guard::[],fc::{_,_,_,_,_,_}} | #itry{anno::{_,_,_,_},args::[any()],vars::[any(),...],body::[any(),...],evars::[any(),...],handler::[any(),...]},_>
diff --git a/lib/dialyzer/test/options1_tests_SUITE_data/src/compiler/beam_asm.erl b/lib/dialyzer/test/options1_tests_SUITE_data/src/compiler/beam_asm.erl
new file mode 100644
index 0000000000..c2d9edcaa7
--- /dev/null
+++ b/lib/dialyzer/test/options1_tests_SUITE_data/src/compiler/beam_asm.erl
@@ -0,0 +1,358 @@
+%% ``The contents of this file are subject to the Erlang Public License,
+%% Version 1.1, (the "License"); you may not use this file except in
+%% compliance with the License. You should have received a copy of the
+%% Erlang Public License along with this software. If not, it can be
+%% retrieved via the world wide web at http://www.erlang.org/.
+%%
+%% Software distributed under the License is distributed on an "AS IS"
+%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
+%% the License for the specific language governing rights and limitations
+%% under the License.
+%%
+%% The Initial Developer of the Original Code is Ericsson Utvecklings AB.
+%% Portions created by Ericsson are Copyright 1999, Ericsson Utvecklings
+%% AB. All Rights Reserved.''
+%%
+%% $Id: beam_asm.erl,v 1.1 2008/12/17 09:53:40 mikpe Exp $
+%%
+%% Purpose : Assembler for threaded Beam.
+
+-module(beam_asm).
+
+-export([module/4,format_error/1]).
+-export([encode/2]).
+
+-import(lists, [map/2,member/2,keymember/3,duplicate/2]).
+-include("beam_opcodes.hrl").
+
+-define(bs_aligned, 1).
+
+module(Code, Abst, SourceFile, Opts) ->
+ case assemble(Code, Abst, SourceFile, Opts) of
+ {error, Error} ->
+ {error, [{none, ?MODULE, Error}]};
+ Bin when binary(Bin) ->
+ {ok, Bin}
+ end.
+
+format_error({crashed, Why}) ->
+ io_lib:format("beam_asm_int: EXIT: ~p", [Why]).
+
+assemble({Mod,Exp,Attr,Asm,NumLabels}, Abst, SourceFile, Opts) ->
+ {1,Dict0} = beam_dict:atom(Mod, beam_dict:new()),
+ NumFuncs = length(Asm),
+ {Code,Dict1} = assemble_1(Asm, Exp, Dict0, []),
+ build_file(Code, Attr, Dict1, NumLabels, NumFuncs, Abst, SourceFile, Opts).
+
+assemble_1([{function,Name,Arity,Entry,Asm}|T], Exp, Dict0, Acc) ->
+ Dict1 = case member({Name,Arity}, Exp) of
+ true ->
+ beam_dict:export(Name, Arity, Entry, Dict0);
+ false ->
+ beam_dict:local(Name, Arity, Entry, Dict0)
+ end,
+ {Code, Dict2} = assemble_function(Asm, Acc, Dict1),
+ assemble_1(T, Exp, Dict2, Code);
+assemble_1([], _Exp, Dict0, Acc) ->
+ {IntCodeEnd,Dict1} = make_op(int_code_end, Dict0),
+ {list_to_binary(lists:reverse(Acc, [IntCodeEnd])),Dict1}.
+
+assemble_function([H|T], Acc, Dict0) ->
+ {Code, Dict} = make_op(H, Dict0),
+ assemble_function(T, [Code| Acc], Dict);
+assemble_function([], Code, Dict) ->
+ {Code, Dict}.
+
+build_file(Code, Attr, Dict, NumLabels, NumFuncs, Abst, SourceFile, Opts) ->
+ %% Create the code chunk.
+
+ CodeChunk = chunk(<<"Code">>,
+ <<16:32,
+ (beam_opcodes:format_number()):32,
+ (beam_dict:highest_opcode(Dict)):32,
+ NumLabels:32,
+ NumFuncs:32>>,
+ Code),
+
+ %% Create the atom table chunk.
+
+ {NumAtoms, AtomTab} = beam_dict:atom_table(Dict),
+ AtomChunk = chunk(<<"Atom">>, <<NumAtoms:32>>, AtomTab),
+
+ %% Create the import table chunk.
+
+ {NumImps, ImpTab0} = beam_dict:import_table(Dict),
+ Imp = flatten_imports(ImpTab0),
+ ImportChunk = chunk(<<"ImpT">>, <<NumImps:32>>, Imp),
+
+ %% Create the export table chunk.
+
+ {NumExps, ExpTab0} = beam_dict:export_table(Dict),
+ Exp = flatten_exports(ExpTab0),
+ ExpChunk = chunk(<<"ExpT">>, <<NumExps:32>>, Exp),
+
+ %% Create the local function table chunk.
+
+ {NumLocals, Locals} = beam_dict:local_table(Dict),
+ Loc = flatten_exports(Locals),
+ LocChunk = chunk(<<"LocT">>, <<NumLocals:32>>, Loc),
+
+ %% Create the string table chunk.
+
+ {_,StringTab} = beam_dict:string_table(Dict),
+ StringChunk = chunk(<<"StrT">>, StringTab),
+
+ %% Create the fun table chunk. It is important not to build an empty chunk,
+ %% as that would change the MD5.
+
+ LambdaChunk = case beam_dict:lambda_table(Dict) of
+ {0,[]} -> [];
+ {NumLambdas,LambdaTab} ->
+ chunk(<<"FunT">>, <<NumLambdas:32>>, LambdaTab)
+ end,
+
+ %% Create the attributes and compile info chunks.
+
+ Essentials = [AtomChunk,CodeChunk,StringChunk,ImportChunk,ExpChunk,LambdaChunk],
+ {Attributes,Compile} = build_attributes(Opts, SourceFile, Attr, Essentials),
+ AttrChunk = chunk(<<"Attr">>, Attributes),
+ CompileChunk = chunk(<<"CInf">>, Compile),
+
+ %% Create the abstract code chunk.
+
+ AbstChunk = chunk(<<"Abst">>, Abst),
+
+ %% Create IFF chunk.
+
+ Chunks = case member(slim, Opts) of
+ true -> [Essentials,AttrChunk,CompileChunk,AbstChunk];
+ false -> [Essentials,LocChunk,AttrChunk,CompileChunk,AbstChunk]
+ end,
+ build_form(<<"BEAM">>, Chunks).
+
+%% Build an IFF form.
+
+build_form(Id, Chunks0) when size(Id) == 4, list(Chunks0) ->
+ Chunks = list_to_binary(Chunks0),
+ Size = size(Chunks),
+ 0 = Size rem 4, % Assertion: correct padding?
+ <<"FOR1",(Size+4):32,Id/binary,Chunks/binary>>.
+
+%% Build a correctly padded chunk (with no sub-header).
+
+chunk(Id, Contents) when size(Id) == 4, binary(Contents) ->
+ Size = size(Contents),
+ [<<Id/binary,Size:32>>,Contents|pad(Size)];
+chunk(Id, Contents) when list(Contents) ->
+ chunk(Id, list_to_binary(Contents)).
+
+%% Build a correctly padded chunk (with a sub-header).
+
+chunk(Id, Head, Contents) when size(Id) == 4, is_binary(Head), is_binary(Contents) ->
+ Size = size(Head)+size(Contents),
+ [<<Id/binary,Size:32,Head/binary>>,Contents|pad(Size)];
+chunk(Id, Head, Contents) when list(Contents) ->
+ chunk(Id, Head, list_to_binary(Contents)).
+
+pad(Size) ->
+ case Size rem 4 of
+ 0 -> [];
+ Rem -> duplicate(4 - Rem, 0)
+ end.
+
+flatten_exports(Exps) ->
+ list_to_binary(map(fun({F,A,L}) -> <<F:32,A:32,L:32>> end, Exps)).
+
+flatten_imports(Imps) ->
+ list_to_binary(map(fun({M,F,A}) -> <<M:32,F:32,A:32>> end, Imps)).
+
+build_attributes(Opts, SourceFile, Attr, Essentials) ->
+ Misc = case member(slim, Opts) of
+ false ->
+ {{Y,Mo,D},{H,Mi,S}} = erlang:universaltime(),
+ [{time,{Y,Mo,D,H,Mi,S}},{source,SourceFile}];
+ true -> []
+ end,
+ Compile = [{options,Opts},{version,?COMPILER_VSN}|Misc],
+ {term_to_binary(calc_vsn(Attr, Essentials)),term_to_binary(Compile)}.
+
+%%
+%% If the attributes contains no 'vsn' attribute, we'll insert one
+%% with an MD5 "checksum" calculated on the code as its value.
+%% We'll not change an existing 'vsn' attribute.
+%%
+
+calc_vsn(Attr, Essentials) ->
+ case keymember(vsn, 1, Attr) of
+ true -> Attr;
+ false ->
+ <<Number:128>> = erlang:md5(Essentials),
+ [{vsn,[Number]}|Attr]
+ end.
+
+bif_type('-', 1) -> negate;
+bif_type('+', 2) -> {op, m_plus};
+bif_type('-', 2) -> {op, m_minus};
+bif_type('*', 2) -> {op, m_times};
+bif_type('/', 2) -> {op, m_div};
+bif_type('div', 2) -> {op, int_div};
+bif_type('rem', 2) -> {op, int_rem};
+bif_type('band', 2) -> {op, int_band};
+bif_type('bor', 2) -> {op, int_bor};
+bif_type('bxor', 2) -> {op, int_bxor};
+bif_type('bsl', 2) -> {op, int_bsl};
+bif_type('bsr', 2) -> {op, int_bsr};
+bif_type('bnot', 1) -> {op, int_bnot};
+bif_type(fnegate, 1) -> {op, fnegate};
+bif_type(fadd, 2) -> {op, fadd};
+bif_type(fsub, 2) -> {op, fsub};
+bif_type(fmul, 2) -> {op, fmul};
+bif_type(fdiv, 2) -> {op, fdiv};
+bif_type(_, _) -> bif.
+
+make_op(Comment, Dict) when element(1, Comment) == '%' ->
+ {[],Dict};
+make_op({'%live',_R}, Dict) ->
+ {[],Dict};
+make_op({bif, Bif, nofail, [], Dest}, Dict) ->
+ encode_op(bif0, [{extfunc, erlang, Bif, 0}, Dest], Dict);
+make_op({bif, raise, _Fail, [A1,A2], _Dest}, Dict) ->
+ encode_op(raise, [A1,A2], Dict);
+make_op({bif, Bif, Fail, Args, Dest}, Dict) ->
+ Arity = length(Args),
+ case bif_type(Bif, Arity) of
+ {op, Op} ->
+ make_op(list_to_tuple([Op, Fail|Args++[Dest]]), Dict);
+ negate ->
+ %% Fake negation operator.
+ make_op({m_minus, Fail, {integer,0}, hd(Args), Dest}, Dict);
+ bif ->
+ BifOp = list_to_atom(lists:concat([bif, Arity])),
+ encode_op(BifOp, [Fail, {extfunc, erlang, Bif, Arity}|Args++[Dest]],
+ Dict)
+ end;
+make_op({bs_add=Op,Fail,[Src1,Src2,Unit],Dest}, Dict) ->
+ encode_op(Op, [Fail,Src1,Src2,Unit,Dest], Dict);
+make_op({test,Cond,Fail,Ops}, Dict) when list(Ops) ->
+ encode_op(Cond, [Fail|Ops], Dict);
+make_op({make_fun2,{f,Lbl},Index,OldUniq,NumFree}, Dict0) ->
+ {Fun,Dict} = beam_dict:lambda(Lbl, Index, OldUniq, NumFree, Dict0),
+ make_op({make_fun2,Fun}, Dict);
+make_op(Op, Dict) when atom(Op) ->
+ encode_op(Op, [], Dict);
+make_op({kill,Y}, Dict) ->
+ make_op({init,Y}, Dict);
+make_op({Name,Arg1}, Dict) ->
+ encode_op(Name, [Arg1], Dict);
+make_op({Name,Arg1,Arg2}, Dict) ->
+ encode_op(Name, [Arg1,Arg2], Dict);
+make_op({Name,Arg1,Arg2,Arg3}, Dict) ->
+ encode_op(Name, [Arg1,Arg2,Arg3], Dict);
+make_op({Name,Arg1,Arg2,Arg3,Arg4}, Dict) ->
+ encode_op(Name, [Arg1,Arg2,Arg3,Arg4], Dict);
+make_op({Name,Arg1,Arg2,Arg3,Arg4,Arg5}, Dict) ->
+ encode_op(Name, [Arg1,Arg2,Arg3,Arg4,Arg5], Dict);
+make_op({Name,Arg1,Arg2,Arg3,Arg4,Arg5,Arg6}, Dict) ->
+ encode_op(Name, [Arg1,Arg2,Arg3,Arg4,Arg5,Arg6], Dict).
+
+encode_op(Name, Args, Dict0) when atom(Name) ->
+ {EncArgs,Dict1} = encode_args(Args, Dict0),
+ Op = beam_opcodes:opcode(Name, length(Args)),
+ Dict2 = beam_dict:opcode(Op, Dict1),
+ {list_to_binary([Op|EncArgs]),Dict2}.
+
+encode_args([Arg| T], Dict0) ->
+ {EncArg, Dict1} = encode_arg(Arg, Dict0),
+ {EncTail, Dict2} = encode_args(T, Dict1),
+ {[EncArg| EncTail], Dict2};
+encode_args([], Dict) ->
+ {[], Dict}.
+
+encode_arg({x, X}, Dict) when X >= 0 ->
+ {encode(?tag_x, X), Dict};
+encode_arg({y, Y}, Dict) when Y >= 0 ->
+ {encode(?tag_y, Y), Dict};
+encode_arg({atom, Atom}, Dict0) when atom(Atom) ->
+ {Index, Dict} = beam_dict:atom(Atom, Dict0),
+ {encode(?tag_a, Index), Dict};
+encode_arg({integer, N}, Dict) ->
+ {encode(?tag_i, N), Dict};
+encode_arg(nil, Dict) ->
+ {encode(?tag_a, 0), Dict};
+encode_arg({f, W}, Dict) ->
+ {encode(?tag_f, W), Dict};
+encode_arg({'char', C}, Dict) ->
+ {encode(?tag_h, C), Dict};
+encode_arg({string, String}, Dict0) ->
+ {Offset, Dict} = beam_dict:string(String, Dict0),
+ {encode(?tag_u, Offset), Dict};
+encode_arg({extfunc, M, F, A}, Dict0) ->
+ {Index, Dict} = beam_dict:import(M, F, A, Dict0),
+ {encode(?tag_u, Index), Dict};
+encode_arg({list, List}, Dict0) ->
+ {L, Dict} = encode_list(List, Dict0, []),
+ {[encode(?tag_z, 1), encode(?tag_u, length(List))|L], Dict};
+encode_arg({float, Float}, Dict) when float(Float) ->
+ {[encode(?tag_z, 0)|<<Float:64/float>>], Dict};
+encode_arg({fr,Fr}, Dict) ->
+ {[encode(?tag_z, 2),encode(?tag_u,Fr)], Dict};
+encode_arg({field_flags,Flags0}, Dict) ->
+ Flags = lists:foldl(fun (F, S) -> S bor flag_to_bit(F) end, 0, Flags0),
+ {encode(?tag_u, Flags), Dict};
+encode_arg({alloc,List}, Dict) ->
+ {encode_alloc_list(List),Dict};
+encode_arg(Int, Dict) when is_integer(Int) ->
+ {encode(?tag_u, Int),Dict}.
+
+flag_to_bit(aligned) -> 16#01;
+flag_to_bit(little) -> 16#02;
+flag_to_bit(big) -> 16#00;
+flag_to_bit(signed) -> 16#04;
+flag_to_bit(unsigned)-> 16#00;
+flag_to_bit(exact) -> 16#08;
+flag_to_bit(native) -> 16#10.
+
+encode_list([H|T], _Dict, _Acc) when is_list(H) ->
+ exit({illegal_nested_list,encode_arg,[H|T]});
+encode_list([H|T], Dict0, Acc) ->
+ {Enc,Dict} = encode_arg(H, Dict0),
+ encode_list(T, Dict, [Enc|Acc]);
+encode_list([], Dict, Acc) ->
+ {lists:reverse(Acc), Dict}.
+
+encode_alloc_list(L0) ->
+ L = encode_alloc_list_1(L0),
+ [encode(?tag_z, 3),encode(?tag_u, length(L0))|L].
+
+encode_alloc_list_1([{words,Words}|T]) ->
+ [encode(?tag_u, 0),encode(?tag_u, Words)|encode_alloc_list_1(T)];
+encode_alloc_list_1([{floats,Floats}|T]) ->
+ [encode(?tag_u, 1),encode(?tag_u, Floats)|encode_alloc_list_1(T)];
+encode_alloc_list_1([]) -> [].
+
+encode(Tag, N) when N < 0 ->
+ encode1(Tag, negative_to_bytes(N, []));
+encode(Tag, N) when N < 16 ->
+ (N bsl 4) bor Tag;
+encode(Tag, N) when N < 16#800 ->
+ [((N bsr 3) band 2#11100000) bor Tag bor 2#00001000, N band 16#ff];
+encode(Tag, N) ->
+ encode1(Tag, to_bytes(N, [])).
+
+encode1(Tag, Bytes) ->
+ case length(Bytes) of
+ Num when 2 =< Num, Num =< 8 ->
+ [((Num-2) bsl 5) bor 2#00011000 bor Tag| Bytes];
+ Num when 8 < Num ->
+ [2#11111000 bor Tag, encode(?tag_u, Num-9)| Bytes]
+ end.
+
+to_bytes(0, [B|Acc]) when B < 128 ->
+ [B|Acc];
+to_bytes(N, Acc) ->
+ to_bytes(N bsr 8, [N band 16#ff| Acc]).
+
+negative_to_bytes(-1, [B1, B2|T]) when B1 > 127 ->
+ [B1, B2|T];
+negative_to_bytes(N, Acc) ->
+ negative_to_bytes(N bsr 8, [N band 16#ff|Acc]).
diff --git a/lib/dialyzer/test/options1_tests_SUITE_data/src/compiler/beam_block.erl b/lib/dialyzer/test/options1_tests_SUITE_data/src/compiler/beam_block.erl
new file mode 100644
index 0000000000..b0dd3e6380
--- /dev/null
+++ b/lib/dialyzer/test/options1_tests_SUITE_data/src/compiler/beam_block.erl
@@ -0,0 +1,601 @@
+%% ``The contents of this file are subject to the Erlang Public License,
+%% Version 1.1, (the "License"); you may not use this file except in
+%% compliance with the License. You should have received a copy of the
+%% Erlang Public License along with this software. If not, it can be
+%% retrieved via the world wide web at http://www.erlang.org/.
+%%
+%% Software distributed under the License is distributed on an "AS IS"
+%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
+%% the License for the specific language governing rights and limitations
+%% under the License.
+%%
+%% The Initial Developer of the Original Code is Ericsson Utvecklings AB.
+%% Portions created by Ericsson are Copyright 1999, Ericsson Utvecklings
+%% AB. All Rights Reserved.''
+%%
+%% $Id: beam_block.erl,v 1.1 2008/12/17 09:53:41 mikpe Exp $
+%%
+%% Purpose : Partitions assembly instructions into basic blocks and
+%% optimizes them.
+
+-module(beam_block).
+
+-export([module/2]).
+-export([live_at_entry/1]). %Used by beam_type, beam_bool.
+-export([is_killed/2]). %Used by beam_dead, beam_type, beam_bool.
+-export([is_not_used/2]). %Used by beam_bool.
+-export([merge_blocks/2]). %Used by beam_jump.
+-import(lists, [map/2,mapfoldr/3,reverse/1,reverse/2,foldl/3,
+ member/2,sort/1,all/2]).
+-define(MAXREG, 1024).
+
+module({Mod,Exp,Attr,Fs,Lc}, _Opt) ->
+ {ok,{Mod,Exp,Attr,map(fun function/1, Fs),Lc}}.
+
+function({function,Name,Arity,CLabel,Is0}) ->
+ %% Collect basic blocks and optimize them.
+ Is = blockify(Is0),
+
+ %% Done.
+ {function,Name,Arity,CLabel,Is}.
+
+%% blockify(Instructions0) -> Instructions
+%% Collect sequences of instructions to basic blocks and
+%% optimize the contents of the blocks. Also do some simple
+%% optimations on instructions outside the blocks.
+
+blockify(Is) ->
+ blockify(Is, []).
+
+blockify([{loop_rec,{f,Fail},{x,0}},{loop_rec_end,_Lbl},{label,Fail}|Is], Acc) ->
+ %% Useless instruction sequence.
+ blockify(Is, Acc);
+blockify([{test,bs_test_tail,F,[Bits]}|Is],
+ [{test,bs_skip_bits,F,[{integer,I},Unit,_Flags]}|Acc]) ->
+ blockify(Is, [{test,bs_test_tail,F,[Bits+I*Unit]}|Acc]);
+blockify([{test,bs_skip_bits,F,[{integer,I1},Unit1,_]}|Is],
+ [{test,bs_skip_bits,F,[{integer,I2},Unit2,Flags]}|Acc]) ->
+ blockify(Is, [{test,bs_skip_bits,F,
+ [{integer,I1*Unit1+I2*Unit2},1,Flags]}|Acc]);
+blockify([{test,is_atom,{f,Fail},[Reg]}=I|
+ [{select_val,Reg,{f,Fail},
+ {list,[{atom,false},{f,_}=BrFalse,
+ {atom,true}=AtomTrue,{f,_}=BrTrue]}}|Is]=Is0],
+ [{block,Bl}|_]=Acc) ->
+ case is_last_bool(Bl, Reg) of
+ false ->
+ blockify(Is0, [I|Acc]);
+ true ->
+ blockify(Is, [{jump,BrTrue},
+ {test,is_eq_exact,BrFalse,[Reg,AtomTrue]}|Acc])
+ end;
+blockify([{test,is_atom,{f,Fail},[Reg]}=I|
+ [{select_val,Reg,{f,Fail},
+ {list,[{atom,true}=AtomTrue,{f,_}=BrTrue,
+ {atom,false},{f,_}=BrFalse]}}|Is]=Is0],
+ [{block,Bl}|_]=Acc) ->
+ case is_last_bool(Bl, Reg) of
+ false ->
+ blockify(Is0, [I|Acc]);
+ true ->
+ blockify(Is, [{jump,BrTrue},
+ {test,is_eq_exact,BrFalse,[Reg,AtomTrue]}|Acc])
+ end;
+blockify([I|Is0]=IsAll, Acc) ->
+ case is_bs_put(I) of
+ true ->
+ {BsPuts0,Is} = collect_bs_puts(IsAll),
+ BsPuts = opt_bs_puts(BsPuts0),
+ blockify(Is, reverse(BsPuts, Acc));
+ false ->
+ case collect(I) of
+ error -> blockify(Is0, [I|Acc]);
+ Instr when is_tuple(Instr) ->
+ {Block0,Is} = collect_block(IsAll),
+ Block = opt_block(Block0),
+ blockify(Is, [{block,Block}|Acc])
+ end
+ end;
+blockify([], Acc) -> reverse(Acc).
+
+is_last_bool([I,{'%live',_}], Reg) ->
+ is_last_bool([I], Reg);
+is_last_bool([{set,[Reg],As,{bif,N,_}}], Reg) ->
+ Ar = length(As),
+ erl_internal:new_type_test(N, Ar) orelse erl_internal:comp_op(N, Ar)
+ orelse erl_internal:bool_op(N, Ar);
+is_last_bool([_|Is], Reg) -> is_last_bool(Is, Reg);
+is_last_bool([], _) -> false.
+
+collect_block(Is) ->
+ collect_block(Is, []).
+
+collect_block([{allocate_zero,Ns,R},{test_heap,Nh,R}|Is], Acc) ->
+ collect_block(Is, [{allocate,R,{no_opt,Ns,Nh,[]}}|Acc]);
+collect_block([I|Is]=Is0, Acc) ->
+ case collect(I) of
+ error -> {reverse(Acc),Is0};
+ Instr -> collect_block(Is, [Instr|Acc])
+ end;
+collect_block([], Acc) -> {reverse(Acc),[]}.
+
+collect({allocate_zero,N,R}) -> {allocate,R,{zero,N,0,[]}};
+collect({test_heap,N,R}) -> {allocate,R,{nozero,nostack,N,[]}};
+collect({bif,N,nofail,As,D}) -> {set,[D],As,{bif,N}};
+collect({bif,N,F,As,D}) -> {set,[D],As,{bif,N,F}};
+collect({move,S,D}) -> {set,[D],[S],move};
+collect({put_list,S1,S2,D}) -> {set,[D],[S1,S2],put_list};
+collect({put_tuple,A,D}) -> {set,[D],[],{put_tuple,A}};
+collect({put,S}) -> {set,[],[S],put};
+collect({put_string,L,S,D}) -> {set,[D],[],{put_string,L,S}};
+collect({get_tuple_element,S,I,D}) -> {set,[D],[S],{get_tuple_element,I}};
+collect({set_tuple_element,S,D,I}) -> {set,[],[S,D],{set_tuple_element,I}};
+collect({get_list,S,D1,D2}) -> {set,[D1,D2],[S],get_list};
+collect(remove_message) -> {set,[],[],remove_message};
+collect({'catch',R,L}) -> {set,[R],[],{'catch',L}};
+collect({'%live',_}=Live) -> Live;
+collect(_) -> error.
+
+opt_block(Is0) ->
+ %% We explicitly move any allocate instruction upwards before optimising
+ %% moves, to avoid any potential problems with the calculation of live
+ %% registers.
+ Is1 = find_fixpoint(fun move_allocates/1, Is0),
+ Is2 = find_fixpoint(fun opt/1, Is1),
+ Is = opt_alloc(Is2),
+ share_floats(Is).
+
+find_fixpoint(OptFun, Is0) ->
+ case OptFun(Is0) of
+ Is0 -> Is0;
+ Is1 -> find_fixpoint(OptFun, Is1)
+ end.
+
+move_allocates([{set,_Ds,_Ss,{set_tuple_element,_}}|_]=Is) -> Is;
+move_allocates([{set,Ds,Ss,_Op}=Set,{allocate,R,Alloc}|Is]) when is_integer(R) ->
+ [{allocate,live_regs(Ds, Ss, R),Alloc},Set|Is];
+move_allocates([{allocate,R1,Alloc1},{allocate,R2,Alloc2}|Is]) ->
+ R1 = R2, % Assertion.
+ move_allocates([{allocate,R1,combine_alloc(Alloc1, Alloc2)}|Is]);
+move_allocates([I|Is]) ->
+ [I|move_allocates(Is)];
+move_allocates([]) -> [].
+
+combine_alloc({_,Ns,Nh1,Init}, {_,nostack,Nh2,[]}) ->
+ {zero,Ns,Nh1+Nh2,Init}.
+
+merge_blocks([{allocate,R,{Attr,Ns,Nh1,Init}}|B1],
+ [{allocate,_,{_,nostack,Nh2,[]}}|B2]) ->
+ Alloc = {allocate,R,{Attr,Ns,Nh1+Nh2,Init}},
+ [Alloc|merge_blocks(B1, B2)];
+merge_blocks(B1, B2) -> merge_blocks_1(B1++[{set,[],[],stop_here}|B2]).
+
+merge_blocks_1([{set,[],_,stop_here}|Is]) -> Is;
+merge_blocks_1([{set,[D],_,move}=I|Is]) ->
+ case is_killed(D, Is) of
+ true -> merge_blocks_1(Is);
+ false -> [I|merge_blocks_1(Is)]
+ end;
+merge_blocks_1([I|Is]) -> [I|merge_blocks_1(Is)].
+
+opt([{set,[Dst],As,{bif,Bif,Fail}}=I1,
+ {set,[Dst],[Dst],{bif,'not',Fail}}=I2|Is]) ->
+ %% Get rid of the 'not' if the operation can be inverted.
+ case inverse_comp_op(Bif) of
+ none -> [I1,I2|opt(Is)];
+ RevBif -> [{set,[Dst],As,{bif,RevBif,Fail}}|opt(Is)]
+ end;
+opt([{set,[X],[X],move}|Is]) -> opt(Is);
+opt([{set,[D1],[{integer,Idx1},Reg],{bif,element,{f,0}}}=I1,
+ {set,[D2],[{integer,Idx2},Reg],{bif,element,{f,0}}}=I2|Is])
+ when Idx1 < Idx2, D1 =/= D2, D1 =/= Reg, D2 =/= Reg ->
+ opt([I2,I1|Is]);
+opt([{set,Ds0,Ss,Op}|Is0]) ->
+ {Ds,Is} = opt_moves(Ds0, Is0),
+ [{set,Ds,Ss,Op}|opt(Is)];
+opt([I|Is]) -> [I|opt(Is)];
+opt([]) -> [].
+
+opt_moves([], Is0) -> {[],Is0};
+opt_moves([D0], Is0) ->
+ {D1,Is1} = opt_move(D0, Is0),
+ {[D1],Is1};
+opt_moves([X0,Y0]=Ds, Is0) ->
+ {X1,Is1} = opt_move(X0, Is0),
+ case opt_move(Y0, Is1) of
+ {Y1,Is2} when X1 =/= Y1 -> {[X1,Y1],Is2};
+ _Other when X1 =/= Y0 -> {[X1,Y0],Is1};
+ _Other -> {Ds,Is0}
+ end.
+
+opt_move(R, [{set,[D],[R],move}|Is]=Is0) ->
+ case is_killed(R, Is) of
+ true -> {D,Is};
+ false -> {R,Is0}
+ end;
+opt_move(R, [I|Is0]) ->
+ case is_transparent(R, I) of
+ true ->
+ {D,Is1} = opt_move(R, Is0),
+ case is_transparent(D, I) of
+ true -> {D,[I|Is1]};
+ false -> {R,[I|Is0]}
+ end;
+ false -> {R,[I|Is0]}
+ end;
+opt_move(R, []) -> {R,[]}.
+
+is_transparent(R, {set,Ds,Ss,_Op}) ->
+ case member(R, Ds) of
+ true -> false;
+ false -> not member(R, Ss)
+ end;
+is_transparent(_, _) -> false.
+
+%% is_killed(Register, [Instruction]) -> true|false
+%% Determine whether a register is killed by the instruction sequence.
+%% If true is returned, it means that the register will not be
+%% referenced in ANY way (not even indirectly by an allocate instruction);
+%% i.e. it is OK to enter the instruction sequence with Register
+%% containing garbage.
+
+is_killed({x,N}=R, [{block,Blk}|Is]) ->
+ case is_killed(R, Blk) of
+ true -> true;
+ false ->
+ %% Before looking beyond the block, we must be
+ %% sure that the register is not referenced by
+ %% any allocate instruction in the block.
+ case all(fun({allocate,Live,_}) when N < Live -> false;
+ (_) -> true
+ end, Blk) of
+ true -> is_killed(R, Is);
+ false -> false
+ end
+ end;
+is_killed(R, [{block,Blk}|Is]) ->
+ case is_killed(R, Blk) of
+ true -> true;
+ false -> is_killed(R, Is)
+ end;
+is_killed(R, [{set,Ds,Ss,_Op}|Is]) ->
+ case member(R, Ss) of
+ true -> false;
+ false ->
+ case member(R, Ds) of
+ true -> true;
+ false -> is_killed(R, Is)
+ end
+ end;
+is_killed(R, [{case_end,Used}|_]) -> R =/= Used;
+is_killed(R, [{badmatch,Used}|_]) -> R =/= Used;
+is_killed(_, [if_end|_]) -> true;
+is_killed(R, [{func_info,_,_,Ar}|_]) ->
+ case R of
+ {x,X} when X < Ar -> false;
+ _ -> true
+ end;
+is_killed(R, [{kill,R}|_]) -> true;
+is_killed(R, [{kill,_}|Is]) -> is_killed(R, Is);
+is_killed(R, [{bs_init2,_,_,_,_,_,Dst}|Is]) ->
+ if
+ R =:= Dst -> true;
+ true -> is_killed(R, Is)
+ end;
+is_killed(R, [{bs_put_string,_,_}|Is]) -> is_killed(R, Is);
+is_killed({x,R}, [{'%live',Live}|_]) when R >= Live -> true;
+is_killed({x,R}, [{'%live',_}|Is]) -> is_killed(R, Is);
+is_killed({x,R}, [{allocate,Live,_}|_]) ->
+ %% Note: To be safe here, we must return either true or false,
+ %% not looking further at the instructions beyond the allocate
+ %% instruction.
+ R >= Live;
+is_killed({x,R}, [{call,Live,_}|_]) when R >= Live -> true;
+is_killed({x,R}, [{call_last,Live,_,_}|_]) when R >= Live -> true;
+is_killed({x,R}, [{call_only,Live,_}|_]) when R >= Live -> true;
+is_killed({x,R}, [{call_ext,Live,_}|_]) when R >= Live -> true;
+is_killed({x,R}, [{call_ext_last,Live,_,_}|_]) when R >= Live -> true;
+is_killed({x,R}, [{call_ext_only,Live,_}|_]) when R >= Live -> true;
+is_killed({x,R}, [return|_]) when R > 0 -> true;
+is_killed(_, _) -> false.
+
+%% is_not_used(Register, [Instruction]) -> true|false
+%% Determine whether a register is used by the instruction sequence.
+%% If true is returned, it means that the register will not be
+%% referenced directly, but it may be referenced by an allocate
+%% instruction (meaning that it is NOT allowed to contain garbage).
+
+is_not_used(R, [{block,Blk}|Is]) ->
+ case is_not_used(R, Blk) of
+ true -> true;
+ false -> is_not_used(R, Is)
+ end;
+is_not_used({x,R}=Reg, [{allocate,Live,_}|Is]) ->
+ if
+ R >= Live -> true;
+ true -> is_not_used(Reg, Is)
+ end;
+is_not_used(R, [{set,Ds,Ss,_Op}|Is]) ->
+ case member(R, Ss) of
+ true -> false;
+ false ->
+ case member(R, Ds) of
+ true -> true;
+ false -> is_not_used(R, Is)
+ end
+ end;
+is_not_used(R, Is) -> is_killed(R, Is).
+
+%% opt_alloc(Instructions) -> Instructions'
+%% Optimises all allocate instructions.
+
+opt_alloc([{allocate,R,{_,Ns,Nh,[]}}|Is]) ->
+ [opt_alloc(Is, Ns, Nh, R)|opt(Is)];
+opt_alloc([I|Is]) -> [I|opt_alloc(Is)];
+opt_alloc([]) -> [].
+
+%% opt_alloc(Instructions, FrameSize, HeapNeed, LivingRegs) -> [Instr]
+%% Generates the optimal sequence of instructions for
+%% allocating and initalizing the stack frame and needed heap.
+
+opt_alloc(_Is, nostack, Nh, LivingRegs) ->
+ {allocate,LivingRegs,{nozero,nostack,Nh,[]}};
+opt_alloc(Is, Ns, Nh, LivingRegs) ->
+ InitRegs = init_yreg(Is, 0),
+ case count_ones(InitRegs) of
+ N when N*2 > Ns ->
+ {allocate,LivingRegs,{nozero,Ns,Nh,gen_init(Ns, InitRegs)}};
+ _ ->
+ {allocate,LivingRegs,{zero,Ns,Nh,[]}}
+ end.
+
+gen_init(Fs, Regs) -> gen_init(Fs, Regs, 0, []).
+
+gen_init(SameFs, _Regs, SameFs, Acc) -> reverse(Acc);
+gen_init(Fs, Regs, Y, Acc) when Regs band 1 == 0 ->
+ gen_init(Fs, Regs bsr 1, Y+1, [{init, {y,Y}}|Acc]);
+gen_init(Fs, Regs, Y, Acc) ->
+ gen_init(Fs, Regs bsr 1, Y+1, Acc).
+
+%% init_yreg(Instructions, RegSet) -> RegSetInitialized
+%% Calculate the set of initialized y registers.
+
+init_yreg([{set,_,_,{bif,_,_}}|_], Reg) -> Reg;
+init_yreg([{set,Ds,_,_}|Is], Reg) -> init_yreg(Is, add_yregs(Ds, Reg));
+init_yreg(_Is, Reg) -> Reg.
+
+add_yregs(Ys, Reg) -> foldl(fun(Y, R0) -> add_yreg(Y, R0) end, Reg, Ys).
+
+add_yreg({y,Y}, Reg) -> Reg bor (1 bsl Y);
+add_yreg(_, Reg) -> Reg.
+
+count_ones(Bits) -> count_ones(Bits, 0).
+count_ones(0, Acc) -> Acc;
+count_ones(Bits, Acc) ->
+ count_ones(Bits bsr 1, Acc + (Bits band 1)).
+
+%% live_at_entry(Is) -> NumberOfRegisters
+%% Calculate the number of register live at the entry to the code
+%% sequence.
+
+live_at_entry([{block,[{allocate,R,_}|_]}|_]) ->
+ R;
+live_at_entry([{label,_}|Is]) ->
+ live_at_entry(Is);
+live_at_entry([{block,Bl}|_]) ->
+ live_at_entry(Bl);
+live_at_entry([{func_info,_,_,Ar}|_]) ->
+ Ar;
+live_at_entry(Is0) ->
+ case reverse(Is0) of
+ [{'%live',Regs}|Is] -> live_at_entry_1(Is, (1 bsl Regs)-1);
+ _ -> unknown
+ end.
+
+live_at_entry_1([{set,Ds,Ss,_}|Is], Rset0) ->
+ Rset = x_live(Ss, x_dead(Ds, Rset0)),
+ live_at_entry_1(Is, Rset);
+live_at_entry_1([{allocate,_,_}|Is], Rset) ->
+ live_at_entry_1(Is, Rset);
+live_at_entry_1([], Rset) -> live_regs_1(0, Rset).
+
+%% Calculate the new number of live registers when we move an allocate
+%% instruction upwards, passing a 'set' instruction.
+
+live_regs(Ds, Ss, Regs0) ->
+ Rset = x_live(Ss, x_dead(Ds, (1 bsl Regs0)-1)),
+ live_regs_1(0, Rset).
+
+live_regs_1(N, 0) -> N;
+live_regs_1(N, Regs) -> live_regs_1(N+1, Regs bsr 1).
+
+x_dead([{x,N}|Rs], Regs) -> x_dead(Rs, Regs band (bnot (1 bsl N)));
+x_dead([_|Rs], Regs) -> x_dead(Rs, Regs);
+x_dead([], Regs) -> Regs.
+
+x_live([{x,N}|Rs], Regs) -> x_live(Rs, Regs bor (1 bsl N));
+x_live([_|Rs], Regs) -> x_live(Rs, Regs);
+x_live([], Regs) -> Regs.
+
+%%
+%% If a floating point literal occurs more than once, move it into
+%% a free register and re-use it.
+%%
+
+share_floats([{allocate,_,_}=Alloc|Is]) ->
+ [Alloc|share_floats(Is)];
+share_floats(Is0) ->
+ All = get_floats(Is0, []),
+ MoreThanOnce0 = more_than_once(sort(All), gb_sets:empty()),
+ case gb_sets:is_empty(MoreThanOnce0) of
+ true -> Is0;
+ false ->
+ MoreThanOnce = gb_sets:to_list(MoreThanOnce0),
+ FreeX = highest_used(Is0, -1) + 1,
+ Regs0 = make_reg_map(MoreThanOnce, FreeX, []),
+ Regs = gb_trees:from_orddict(Regs0),
+ Is = map(fun({set,Ds,[{float,F}],Op}=I) ->
+ case gb_trees:lookup(F, Regs) of
+ none -> I;
+ {value,R} -> {set,Ds,[R],Op}
+ end;
+ (I) -> I
+ end, Is0),
+ [{set,[R],[{float,F}],move} || {F,R} <- Regs0] ++ Is
+ end.
+
+get_floats([{set,_,[{float,F}],_}|Is], Acc) ->
+ get_floats(Is, [F|Acc]);
+get_floats([_|Is], Acc) ->
+ get_floats(Is, Acc);
+get_floats([], Acc) -> Acc.
+
+more_than_once([F,F|Fs], Set) ->
+ more_than_once(Fs, gb_sets:add(F, Set));
+more_than_once([_|Fs], Set) ->
+ more_than_once(Fs, Set);
+more_than_once([], Set) -> Set.
+
+highest_used([{set,Ds,Ss,_}|Is], High) ->
+ highest_used(Is, highest(Ds, highest(Ss, High)));
+highest_used([{'%live',Live}|Is], High) when Live > High ->
+ highest_used(Is, Live);
+highest_used([_|Is], High) ->
+ highest_used(Is, High);
+highest_used([], High) -> High.
+
+highest([{x,R}|Rs], High) when R > High ->
+ highest(Rs, R);
+highest([_|Rs], High) ->
+ highest(Rs, High);
+highest([], High) -> High.
+
+make_reg_map([F|Fs], R, Acc) when R < ?MAXREG ->
+ make_reg_map(Fs, R+1, [{F,{x,R}}|Acc]);
+make_reg_map(_, _, Acc) -> sort(Acc).
+
+%% inverse_comp_op(Op) -> none|RevOp
+
+inverse_comp_op('=:=') -> '=/=';
+inverse_comp_op('=/=') -> '=:=';
+inverse_comp_op('==') -> '/=';
+inverse_comp_op('/=') -> '==';
+inverse_comp_op('>') -> '=<';
+inverse_comp_op('<') -> '>=';
+inverse_comp_op('>=') -> '<';
+inverse_comp_op('=<') -> '>';
+inverse_comp_op(_) -> none.
+
+%%%
+%%% Evaluation of constant bit fields.
+%%%
+
+is_bs_put({bs_put_integer,_,_,_,_,_}) -> true;
+is_bs_put({bs_put_float,_,_,_,_,_}) -> true;
+is_bs_put(_) -> false.
+
+collect_bs_puts(Is) ->
+ collect_bs_puts_1(Is, []).
+
+collect_bs_puts_1([I|Is]=Is0, Acc) ->
+ case is_bs_put(I) of
+ false -> {reverse(Acc),Is0};
+ true -> collect_bs_puts_1(Is, [I|Acc])
+ end;
+collect_bs_puts_1([], Acc) -> {reverse(Acc),[]}.
+
+opt_bs_puts(Is) ->
+ opt_bs_1(Is, []).
+
+opt_bs_1([{bs_put_float,Fail,{integer,Sz},1,Flags0,Src}=I0|Is], Acc) ->
+ case catch eval_put_float(Src, Sz, Flags0) of
+ {'EXIT',_} ->
+ opt_bs_1(Is, [I0|Acc]);
+ <<Int:Sz>> ->
+ Flags = force_big(Flags0),
+ I = {bs_put_integer,Fail,{integer,Sz},1,Flags,{integer,Int}},
+ opt_bs_1([I|Is], Acc)
+ end;
+opt_bs_1([{bs_put_integer,_,{integer,8},1,_,{integer,_}}|_]=IsAll, Acc0) ->
+ {Is,Acc} = bs_collect_string(IsAll, Acc0),
+ opt_bs_1(Is, Acc);
+opt_bs_1([{bs_put_integer,Fail,{integer,Sz},1,F,{integer,N}}=I|Is0], Acc) when Sz > 8 ->
+ case field_endian(F) of
+ big ->
+ case bs_split_int(N, Sz, Fail, Is0) of
+ no_split -> opt_bs_1(Is0, [I|Acc]);
+ Is -> opt_bs_1(Is, Acc)
+ end;
+ little ->
+ case catch <<N:Sz/little>> of
+ {'EXIT',_} ->
+ opt_bs_1(Is0, [I|Acc]);
+ <<Int:Sz>> ->
+ Flags = force_big(F),
+ Is = [{bs_put_integer,Fail,{integer,Sz},1,
+ Flags,{integer,Int}}|Is0],
+ opt_bs_1(Is, Acc)
+ end;
+ native -> opt_bs_1(Is0, [I|Acc])
+ end;
+opt_bs_1([{Op,Fail,{integer,Sz},U,F,Src}|Is], Acc) when U > 1 ->
+ opt_bs_1([{Op,Fail,{integer,U*Sz},1,F,Src}|Is], Acc);
+opt_bs_1([I|Is], Acc) ->
+ opt_bs_1(Is, [I|Acc]);
+opt_bs_1([], Acc) -> reverse(Acc).
+
+eval_put_float(Src, Sz, Flags) ->
+ Val = value(Src),
+ case field_endian(Flags) of
+ little -> <<Val:Sz/little-float-unit:1>>;
+ big -> <<Val:Sz/big-float-unit:1>>
+ %% native intentionally not handled here - we can't optimize it.
+ end.
+
+value({integer,I}) -> I;
+value({float,F}) -> F;
+value({atom,A}) -> A.
+
+bs_collect_string(Is, [{bs_put_string,Len,{string,Str}}|Acc]) ->
+ bs_coll_str_1(Is, Len, reverse(Str), Acc);
+bs_collect_string(Is, Acc) ->
+ bs_coll_str_1(Is, 0, [], Acc).
+
+bs_coll_str_1([{bs_put_integer,_,{integer,Sz},U,_,{integer,V}}|Is],
+ Len, StrAcc, IsAcc) when U*Sz =:= 8 ->
+ Byte = V band 16#FF,
+ bs_coll_str_1(Is, Len+1, [Byte|StrAcc], IsAcc);
+bs_coll_str_1(Is, Len, StrAcc, IsAcc) ->
+ {Is,[{bs_put_string,Len,{string,reverse(StrAcc)}}|IsAcc]}.
+
+field_endian({field_flags,F}) -> field_endian_1(F).
+
+field_endian_1([big=E|_]) -> E;
+field_endian_1([little=E|_]) -> E;
+field_endian_1([native=E|_]) -> E;
+field_endian_1([_|Fs]) -> field_endian_1(Fs).
+
+force_big({field_flags,F}) ->
+ {field_flags,force_big_1(F)}.
+
+force_big_1([big|_]=Fs) -> Fs;
+force_big_1([little|Fs]) -> [big|Fs];
+force_big_1([F|Fs]) -> [F|force_big_1(Fs)].
+
+bs_split_int(0, Sz, _, _) when Sz > 64 ->
+ %% We don't want to split in this case because the
+ %% string will consist of only zeroes.
+ no_split;
+bs_split_int(N, Sz, Fail, Acc) ->
+ FirstByteSz = case Sz rem 8 of
+ 0 -> 8;
+ Rem -> Rem
+ end,
+ bs_split_int_1(N, FirstByteSz, Sz, Fail, Acc).
+
+bs_split_int_1(N, ByteSz, Sz, Fail, Acc) when Sz > 0 ->
+ Mask = (1 bsl ByteSz) - 1,
+ I = {bs_put_integer,Fail,{integer,ByteSz},1,
+ {field_flags,[big]},{integer,N band Mask}},
+ bs_split_int_1(N bsr ByteSz, 8, Sz-ByteSz, Fail, [I|Acc]);
+bs_split_int_1(_, _, _, _, Acc) -> Acc.
diff --git a/lib/dialyzer/test/options1_tests_SUITE_data/src/compiler/beam_bool.erl b/lib/dialyzer/test/options1_tests_SUITE_data/src/compiler/beam_bool.erl
new file mode 100644
index 0000000000..3180a22433
--- /dev/null
+++ b/lib/dialyzer/test/options1_tests_SUITE_data/src/compiler/beam_bool.erl
@@ -0,0 +1,617 @@
+%% ``The contents of this file are subject to the Erlang Public License,
+%% Version 1.1, (the "License"); you may not use this file except in
+%% compliance with the License. You should have received a copy of the
+%% Erlang Public License along with this software. If not, it can be
+%% retrieved via the world wide web at http://www.erlang.org/.
+%%
+%% Software distributed under the License is distributed on an "AS IS"
+%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
+%% the License for the specific language governing rights and limitations
+%% under the License.
+%%
+%% The Initial Developer of the Original Code is Ericsson Utvecklings AB.
+%% Portions created by Ericsson are Copyright 1999, Ericsson Utvecklings
+%% AB. All Rights Reserved.''
+%%
+%% $Id: beam_bool.erl,v 1.1 2008/12/17 09:53:41 mikpe Exp $
+%%
+%% Purpose: Optimizes booleans in guards.
+
+-module(beam_bool).
+
+-export([module/2]).
+
+-import(lists, [reverse/1,foldl/3,mapfoldl/3,sort/1,member/2]).
+-define(MAXREG, 1024).
+
+-record(st,
+ {next, %Next label number.
+ ll %Live regs at labels.
+ }).
+
+module({Mod,Exp,Attr,Fs0,Lc}, _Opts) ->
+ %%io:format("~p:\n", [Mod]),
+ {Fs,_} = mapfoldl(fun(Fn, Lbl) -> function(Fn, Lbl) end, 100000000, Fs0),
+ {ok,{Mod,Exp,Attr,Fs,Lc}}.
+
+function({function,Name,Arity,CLabel,Is0}, Lbl0) ->
+ %%io:format("~p/~p:\n", [Name,Arity]),
+ {Is,#st{next=Lbl}} = bool_opt(Is0, Lbl0),
+ {{function,Name,Arity,CLabel,Is},Lbl}.
+
+%%
+%% Optimize boolean expressions that use guard bifs. Rewrite to
+%% use test instructions if possible.
+%%
+
+bool_opt(Asm, Lbl) ->
+ LiveInfo = index_instructions(Asm),
+ bopt(Asm, [], #st{next=Lbl,ll=LiveInfo}).
+
+bopt([{block,Bl0}=Block|
+ [{jump,{f,Succ}},
+ {label,Fail},
+ {block,[{set,[Dst],[{atom,false}],move},{'%live',Live}]},
+ {label,Succ}|Is]=Is0], Acc0, St) ->
+ case split_block(Bl0, Dst, Fail) of
+ failed ->
+ bopt(Is0, [Block|Acc0], St);
+ {Bl,PreBlock} ->
+ Acc1 = case PreBlock of
+ [] -> Acc0;
+ _ -> [{block,PreBlock}|Acc0]
+ end,
+ Acc = [{protected,[Dst],Bl,{Fail,Succ,Live}}|Acc1],
+ bopt(Is, Acc, St)
+ end;
+bopt([{test,is_eq_exact,{f,Fail},[Reg,{atom,true}]}=I|Is], [{block,_}|_]=Acc0, St0) ->
+ case bopt_block(Reg, Fail, Is, Acc0, St0) of
+ failed -> bopt(Is, [I|Acc0], St0);
+ {Acc,St} -> bopt(Is, Acc, St)
+ end;
+bopt([I|Is], Acc, St) ->
+ bopt(Is, [I|Acc], St);
+bopt([], Acc, St) ->
+ {bopt_reverse(Acc, []),St}.
+
+bopt_reverse([{protected,[Dst],Block,{Fail,Succ,Live}}|Is], Acc0) ->
+ Acc = [{block,Block},{jump,{f,Succ}},
+ {label,Fail},
+ {block,[{set,[Dst],[{atom,false}],move},{'%live',Live}]},
+ {label,Succ}|Acc0],
+ bopt_reverse(Is, Acc);
+bopt_reverse([I|Is], Acc) ->
+ bopt_reverse(Is, [I|Acc]);
+bopt_reverse([], Acc) -> Acc.
+
+%% bopt_block(Reg, Fail, OldIs, Accumulator, St) -> failed | {NewAcc,St}
+%% Attempt to optimized a block of guard BIFs followed by a test
+%% instruction.
+bopt_block(Reg, Fail, OldIs, [{block,Bl0}|Acc0], St0) ->
+ case split_block(Bl0, Reg, Fail) of
+ failed ->
+ %% Reason for failure: The block either contained no
+ %% guard BIFs with the failure label Fail, or the final
+ %% instruction in the block did not assign the Reg register.
+
+ %%io:format("split ~p: ~P\n", [Reg,Bl0,20]),
+ failed;
+ {Bl1,BlPre} ->
+ %% The block has been splitted. Bl1 is a non-empty list
+ %% of guard BIF instructions having the failure label Fail.
+ %% BlPre is a (possibly empty list) of instructions preceeding
+ %% Bl1.
+ Acc1 = make_block(BlPre, Acc0),
+ {Bl,Acc} = extend_block(Bl1, Fail, Acc1),
+ case catch bopt_block_1(Bl, Fail, St0) of
+ {'EXIT',_Reason} ->
+ %% Optimization failed for one of the following reasons:
+ %%
+ %% 1. Not possible to rewrite because a boolean value is
+ %% passed to another guard bif, e.g. 'abs(A > B)'
+ %% (in this case, obviously nonsense code). Rare in
+ %% practice.
+ %%
+ %% 2. Not possible to rewrite because we have not seen
+ %% the complete boolan expression (it is spread out
+ %% over several blocks with jumps and labels).
+ %% The 'or' and 'and' instructions need to that fully
+ %% known operands in order to be eliminated.
+ %%
+ %% 3. Other bug or limitation.
+
+ %%io:format("~P\n", [_Reason,20]),
+ failed;
+ {NewCode,St} ->
+ case is_opt_safe(Bl, NewCode, OldIs, St) of
+ false ->
+ %% The optimization is not safe. (A register
+ %% used by the instructions following the
+ %% optimized code is either not assigned a
+ %% value at all or assigned a different value.)
+
+ %%io:format("\nNot safe:\n"),
+ %%io:format("~p\n", [Bl]),
+ %%io:format("~p\n", [reverse(NewCode)]),
+ failed;
+ true -> {NewCode++Acc,St}
+ end
+ end
+ end.
+
+bopt_block_1(Block, Fail, St) ->
+ {Pre0,[{_,Tree}]} = bopt_tree(Block),
+ Pre = update_fail_label(Pre0, Fail, []),
+ bopt_cg(Tree, Fail, make_block(Pre, []), St).
+
+%% is_opt_safe(OriginalCode, OptCode, FollowingCode, State) -> true|false
+%% Comparing the original code to the optimized code, determine
+%% whether the optimized code is guaranteed to work in the same
+%% way as the original code.
+
+is_opt_safe(Bl, NewCode, OldIs, St) ->
+ %% Here are the conditions that must be true for the
+ %% optimization to be safe.
+ %%
+ %% 1. Any register that was assigned a value in the original
+ %% code, but is not in the optimized code, must be guaranteed
+ %% to be KILLED in the following code. (NotSet below.)
+ %%
+ %% 2. Any register that is assigned a value in the optimized
+ %% code must be UNUSED in the following code. (NewDst, Set.)
+ %% (Possible future improvement: Registers that are known
+ %% to be assigned the SAME value in the original and optimized
+ %% code don't need to be unused in the following code.)
+
+ PrevDst = dst_regs(Bl),
+ NewDst = dst_regs(NewCode),
+ NotSet = ordsets:subtract(PrevDst, NewDst),
+
+ %% Note: The following line is an optimization. We don't need
+ %% to test whether variables in NotSet for being unused, because
+ %% they will all be tested for being killed (a stronger condition
+ %% than being unused).
+
+ Set = ordsets:subtract(NewDst, NotSet),
+
+ all_killed(NotSet, OldIs, St) andalso
+ none_used(Set, OldIs, St).
+
+% update_fail_label([{set,_,_,{bif,_,{f,0}}}=I|Is], Fail, Acc) ->
+% update_fail_label(Is, Fail, [I|Acc]);
+update_fail_label([{set,Ds,As,{bif,N,{f,_}}}|Is], Fail, Acc) ->
+ update_fail_label(Is, Fail, [{set,Ds,As,{bif,N,{f,Fail}}}|Acc]);
+update_fail_label([], _, Acc) -> Acc.
+
+make_block([], Acc) -> Acc;
+make_block(Bl, Acc) -> [{block,Bl}|Acc].
+
+extend_block(BlAcc, Fail, [{protected,_,_,_}=Prot|OldAcc]) ->
+ extend_block([Prot|BlAcc], Fail, OldAcc);
+extend_block(BlAcc0, Fail, [{block,Is0}|OldAcc]=OldAcc0) ->
+ case extend_block_1(reverse(Is0), Fail, BlAcc0) of
+ {[],_} -> {BlAcc0,OldAcc0};
+ {BlAcc,[]} -> extend_block(BlAcc, Fail, OldAcc);
+ {BlAcc,Is} -> {BlAcc,[{block,Is}|OldAcc]}
+ end;
+extend_block(BlAcc, _, OldAcc) -> {BlAcc,OldAcc}.
+
+extend_block_1([{set,[_],_,{bif,_,{f,Fail}}}=I|Is], Fail, Acc) ->
+ extend_block_1(Is, Fail, [I|Acc]);
+extend_block_1([{set,[_],As,{bif,Bif,_}}=I|Is]=Is0, Fail, Acc) ->
+ case safe_bool_op(Bif, length(As)) of
+ false -> {Acc,reverse(Is0)};
+ true -> extend_block_1(Is, Fail, [I|Acc])
+ end;
+extend_block_1([_|_]=Is, _, Acc) -> {Acc,reverse(Is)};
+extend_block_1([], _, Acc) -> {Acc,[]}.
+
+split_block(Is0, Dst, Fail) ->
+ case reverse(Is0) of
+ [{'%live',_}|[{set,[Dst],_,_}|_]=Is] ->
+ split_block_1(Is, Fail);
+ [{set,[Dst],_,_}|_]=Is ->
+ split_block_1(Is, Fail);
+ _ -> failed
+ end.
+
+split_block_1(Is, Fail) ->
+ case split_block_2(Is, Fail, []) of
+ {[],_} -> failed;
+ {_,_}=Res -> Res
+ end.
+
+% split_block_2([{set,[_],_,{bif,_,{f,0}}}=I|Is], Fail, Acc) ->
+% split_block_2(Is, Fail, [I|Acc]);
+split_block_2([{set,[_],_,{bif,_,{f,Fail}}}=I|Is], Fail, Acc) ->
+ split_block_2(Is, Fail, [I|Acc]);
+split_block_2([{'%live',_}|Is], Fail, Acc) ->
+ split_block_2(Is, Fail, Acc);
+split_block_2(Is, _, Acc) -> {Acc,reverse(Is)}.
+
+dst_regs(Is) ->
+ dst_regs(Is, []).
+
+dst_regs([{block,Bl}|Is], Acc) ->
+ dst_regs(Bl, dst_regs(Is, Acc));
+dst_regs([{set,[D],_,{bif,_,{f,_}}}|Is], Acc) ->
+ dst_regs(Is, [D|Acc]);
+dst_regs([_|Is], Acc) ->
+ dst_regs(Is, Acc);
+dst_regs([], Acc) -> ordsets:from_list(Acc).
+
+all_killed([R|Rs], OldIs, St) ->
+ case is_killed(R, OldIs, St) of
+ false -> false;
+ true -> all_killed(Rs, OldIs, St)
+ end;
+all_killed([], _, _) -> true.
+
+none_used([R|Rs], OldIs, St) ->
+ case is_not_used(R, OldIs, St) of
+ false -> false;
+ true -> none_used(Rs, OldIs, St)
+ end;
+none_used([], _, _) -> true.
+
+bopt_tree(Block0) ->
+ Block = ssa_block(Block0),
+ Reg = free_variables(Block),
+ %%io:format("~p\n", [Block]),
+ %%io:format("~p\n", [Reg]),
+ Res = bopt_tree_1(Block, Reg, []),
+ %%io:format("~p\n", [Res]),
+ Res.
+
+bopt_tree_1([{set,[Dst],As0,{bif,'not',_}}|Is], Forest0, Pre) ->
+ {[Arg],Forest1} = bopt_bool_args(As0, Forest0),
+ Forest = gb_trees:enter(Dst, {'not',Arg}, Forest1),
+ bopt_tree_1(Is, Forest, Pre);
+bopt_tree_1([{set,[Dst],As0,{bif,'and',_}}|Is], Forest0, Pre) ->
+ {As,Forest1} = bopt_bool_args(As0, Forest0),
+ AndList = make_and_list(As),
+ Forest = gb_trees:enter(Dst, {'and',AndList}, Forest1),
+ bopt_tree_1(Is, Forest, Pre);
+bopt_tree_1([{set,[Dst],[L0,R0],{bif,'or',_}}|Is], Forest0, Pre) ->
+ L = gb_trees:get(L0, Forest0),
+ R = gb_trees:get(R0, Forest0),
+ Forest1 = gb_trees:delete(L0, gb_trees:delete(R0, Forest0)),
+ OrList = make_or_list([L,R]),
+ Forest = gb_trees:enter(Dst, {'or',OrList}, Forest1),
+ bopt_tree_1(Is, Forest, Pre);
+bopt_tree_1([{protected,[Dst],_,_}=Prot|Is], Forest0, Pre) ->
+ Forest = gb_trees:enter(Dst, Prot, Forest0),
+ bopt_tree_1(Is, Forest, Pre);
+bopt_tree_1([{set,[Dst],As,{bif,N,_}}=Bif|Is], Forest0, Pre) ->
+ Ar = length(As),
+ case safe_bool_op(N, Ar) of
+ false ->
+ bopt_good_args(As, Forest0),
+ Forest = gb_trees:enter(Dst, any, Forest0),
+ bopt_tree_1(Is, Forest, [Bif|Pre]);
+ true ->
+ bopt_good_args(As, Forest0),
+ Test = bif_to_test(Dst, N, As),
+ Forest = gb_trees:enter(Dst, Test, Forest0),
+ bopt_tree_1(Is, Forest, Pre)
+ end;
+bopt_tree_1([], Forest, Pre) ->
+ {Pre,[R || {_,V}=R <- gb_trees:to_list(Forest), V =/= any]}.
+
+safe_bool_op(internal_is_record, 3) -> true;
+safe_bool_op(N, Ar) ->
+ erl_internal:new_type_test(N, Ar) orelse erl_internal:comp_op(N, Ar).
+
+bopt_bool_args(As, Forest) ->
+ mapfoldl(fun bopt_bool_arg/2, Forest, As).
+
+bopt_bool_arg({T,_}=R, Forest) when T == x; T == y ->
+ {gb_trees:get(R, Forest),gb_trees:delete(R, Forest)};
+bopt_bool_arg(Term, Forest) ->
+ {Term,Forest}.
+
+bopt_good_args([A|As], Regs) ->
+ bopt_good_arg(A, Regs),
+ bopt_good_args(As, Regs);
+bopt_good_args([], _) -> ok.
+
+bopt_good_arg({x,_}=X, Regs) ->
+ case gb_trees:get(X, Regs) of
+ any -> ok;
+ _Other ->
+ %%io:format("not any: ~p: ~p\n", [X,_Other]),
+ exit(bad_contents)
+ end;
+bopt_good_arg(_, _) -> ok.
+
+bif_to_test(_, N, As) ->
+ bif_to_test(N, As).
+
+bif_to_test(internal_is_record, [_,_,_]=As) ->
+ {test,internal_is_record,fail,As};
+bif_to_test('=:=', As) -> {test,is_eq_exact,fail,As};
+bif_to_test('=/=', As) -> {test,is_ne_exact,fail,As};
+bif_to_test('==', As) -> {test,is_eq,fail,As};
+bif_to_test('/=', As) -> {test,is_ne,fail,As};
+bif_to_test('=<', [L,R]) -> {test,is_ge,fail,[R,L]};
+bif_to_test('>=', As) -> {test,is_ge,fail,As};
+bif_to_test('>', [L,R]) -> {test,is_lt,fail,[R,L]};
+bif_to_test('<', As) -> {test,is_lt,fail,As};
+bif_to_test(Name, [_]=As) ->
+ case erl_internal:new_type_test(Name, 1) of
+ false -> exit({bif_to_test,Name,As,failed});
+ true -> {test,Name,fail,As}
+ end.
+
+make_and_list([{'and',As}|Is]) ->
+ make_and_list(As++Is);
+make_and_list([I|Is]) ->
+ [I|make_and_list(Is)];
+make_and_list([]) -> [].
+
+make_or_list([{'or',As}|Is]) ->
+ make_or_list(As++Is);
+make_or_list([I|Is]) ->
+ [I|make_or_list(Is)];
+make_or_list([]) -> [].
+
+%% Code generation for a boolean tree.
+
+bopt_cg({'not',Arg}, Fail, Acc, St) ->
+ I = bopt_cg_not(Arg),
+ bopt_cg(I, Fail, Acc, St);
+bopt_cg({'and',As}, Fail, Acc, St) ->
+ bopt_cg_and(As, Fail, Acc, St);
+bopt_cg({'or',As}, Fail, Acc, St0) ->
+ {Succ,St} = new_label(St0),
+ bopt_cg_or(As, Succ, Fail, Acc, St);
+bopt_cg({test,is_tuple_element,fail,[Tmp,Tuple,RecordTag]}, Fail, Acc, St) ->
+ {[{test,is_eq_exact,{f,Fail},[Tmp,RecordTag]},
+ {get_tuple_element,Tuple,0,Tmp}|Acc],St};
+bopt_cg({inverted_test,is_tuple_element,fail,[Tmp,Tuple,RecordTag]}, Fail, Acc, St) ->
+ {[{test,is_ne_exact,{f,Fail},[Tmp,RecordTag]},
+ {get_tuple_element,Tuple,0,Tmp}|Acc],St};
+bopt_cg({test,N,fail,As}, Fail, Acc, St) ->
+ Test = {test,N,{f,Fail},As},
+ {[Test|Acc],St};
+bopt_cg({inverted_test,N,fail,As}, Fail, Acc, St0) ->
+ {Lbl,St} = new_label(St0),
+ {[{label,Lbl},{jump,{f,Fail}},{test,N,{f,Lbl},As}|Acc],St};
+bopt_cg({protected,_,Bl0,{_,_,_}}, Fail, Acc, St0) ->
+ {Bl,St} = bopt_block_1(Bl0, Fail, St0),
+ {Bl++Acc,St};
+bopt_cg([_|_]=And, Fail, Acc, St) ->
+ bopt_cg_and(And, Fail, Acc, St).
+
+bopt_cg_not({'and',As0}) ->
+ As = [bopt_cg_not(A) || A <- As0],
+ {'or',As};
+bopt_cg_not({'or',As0}) ->
+ As = [bopt_cg_not(A) || A <- As0],
+ {'and',As};
+bopt_cg_not({test,Test,Fail,As}) ->
+ {inverted_test,Test,Fail,As}.
+
+bopt_cg_and([{atom,false}|_], Fail, _, St) ->
+ {[{jump,{f,Fail}}],St};
+bopt_cg_and([{atom,true}|Is], Fail, Acc, St) ->
+ bopt_cg_and(Is, Fail, Acc, St);
+bopt_cg_and([I|Is], Fail, Acc0, St0) ->
+ {Acc,St} = bopt_cg(I, Fail, Acc0, St0),
+ bopt_cg_and(Is, Fail, Acc, St);
+bopt_cg_and([], _, Acc, St) -> {Acc,St}.
+
+bopt_cg_or([I], Succ, Fail, Acc0, St0) ->
+ {Acc,St} = bopt_cg(I, Fail, Acc0, St0),
+ {[{label,Succ}|Acc],St};
+bopt_cg_or([I|Is], Succ, Fail, Acc0, St0) ->
+ {Lbl,St1} = new_label(St0),
+ {Acc,St} = bopt_cg(I, Lbl, Acc0, St1),
+ bopt_cg_or(Is, Succ, Fail, [{label,Lbl},{jump,{f,Succ}}|Acc], St).
+
+new_label(#st{next=LabelNum}=St) when is_integer(LabelNum) ->
+ {LabelNum,St#st{next=LabelNum+1}}.
+
+free_variables(Is) ->
+ E = gb_sets:empty(),
+ free_vars_1(Is, E, E).
+
+free_vars_1([{set,[Dst],As,{bif,_,_}}|Is], F0, N0) ->
+ F = gb_sets:union(F0, gb_sets:difference(var_list(As), N0)),
+ N = gb_sets:union(N0, var_list([Dst])),
+ free_vars_1(Is, F, N);
+free_vars_1([{protected,_,Pa,_}|Is], F, N) ->
+ free_vars_1(Pa++Is, F, N);
+free_vars_1([], F, _) ->
+ gb_trees:from_orddict([{K,any} || K <- gb_sets:to_list(F)]).
+
+var_list(Is) ->
+ var_list_1(Is, gb_sets:empty()).
+
+var_list_1([{x,_}=X|Is], D) ->
+ var_list_1(Is, gb_sets:add(X, D));
+var_list_1([_|Is], D) ->
+ var_list_1(Is, D);
+var_list_1([], D) -> D.
+
+%%%
+%%% Convert a block to Static Single Assignment (SSA) form.
+%%%
+
+-record(ssa,
+ {live,
+ sub}).
+
+ssa_block(Is0) ->
+ Next = ssa_first_free(Is0, 0),
+ {Is,_} = ssa_block_1(Is0, #ssa{live=Next,sub=gb_trees:empty()}, []),
+ Is.
+
+ssa_block_1([{protected,[_],Pa0,Pb}|Is], Sub0, Acc) ->
+ {Pa,Sub} = ssa_block_1(Pa0, Sub0, []),
+ Dst = ssa_last_target(Pa),
+ ssa_block_1(Is, Sub, [{protected,[Dst],Pa,Pb}|Acc]);
+ssa_block_1([{set,[Dst],As,Bif}|Is], Sub0, Acc0) ->
+ Sub1 = ssa_in_use_list(As, Sub0),
+ Sub = ssa_assign(Dst, Sub1),
+ Acc = [{set,[ssa_sub(Dst, Sub)],ssa_sub_list(As, Sub0),Bif}|Acc0],
+ ssa_block_1(Is, Sub, Acc);
+ssa_block_1([], Sub, Acc) -> {reverse(Acc),Sub}.
+
+ssa_in_use_list(As, Sub) ->
+ foldl(fun ssa_in_use/2, Sub, As).
+
+ssa_in_use({x,_}=R, #ssa{sub=Sub0}=Ssa) ->
+ case gb_trees:is_defined(R, Sub0) of
+ true -> Ssa;
+ false ->
+ Sub = gb_trees:insert(R, R, Sub0),
+ Ssa#ssa{sub=Sub}
+ end;
+ssa_in_use(_, Ssa) -> Ssa.
+
+ssa_assign({x,_}=R, #ssa{sub=Sub0}=Ssa0) ->
+ case gb_trees:is_defined(R, Sub0) of
+ false ->
+ Sub = gb_trees:insert(R, R, Sub0),
+ Ssa0#ssa{sub=Sub};
+ true ->
+ {NewReg,Ssa} = ssa_new_reg(Ssa0),
+ Sub1 = gb_trees:update(R, NewReg, Sub0),
+ Sub = gb_trees:insert(NewReg, NewReg, Sub1),
+ Ssa#ssa{sub=Sub}
+ end;
+ssa_assign(_, Ssa) -> Ssa.
+
+ssa_sub_list(List, Sub) ->
+ [ssa_sub(E, Sub) || E <- List].
+
+ssa_sub(R0, #ssa{sub=Sub}) ->
+ case gb_trees:lookup(R0, Sub) of
+ none -> R0;
+ {value,R} -> R
+ end.
+
+ssa_new_reg(#ssa{live=Reg}=Ssa) ->
+ {{x,Reg},Ssa#ssa{live=Reg+1}}.
+
+ssa_first_free([{protected,Ds,_,_}|Is], Next0) ->
+ Next = ssa_first_free_list(Ds, Next0),
+ ssa_first_free(Is, Next);
+ssa_first_free([{set,[Dst],As,_}|Is], Next0) ->
+ Next = ssa_first_free_list([Dst|As], Next0),
+ ssa_first_free(Is, Next);
+ssa_first_free([], Next) -> Next.
+
+ssa_first_free_list(Regs, Next) ->
+ foldl(fun({x,R}, N) when R >= N -> R+1;
+ (_, N) -> N end, Next, Regs).
+
+ssa_last_target([{set,[Dst],_,_},{'%live',_}]) -> Dst;
+ssa_last_target([{set,[Dst],_,_}]) -> Dst;
+ssa_last_target([_|Is]) -> ssa_last_target(Is).
+
+%% index_instructions(FunctionIs) -> GbTree([{Label,Is}])
+%% Index the instruction sequence so that we can quickly
+%% look up the instruction following a specific label.
+
+index_instructions(Is) ->
+ ii_1(Is, []).
+
+ii_1([{label,Lbl}|Is0], Acc) ->
+ Is = lists:dropwhile(fun({label,_}) -> true;
+ (_) -> false end, Is0),
+ ii_1(Is0, [{Lbl,Is}|Acc]);
+ii_1([_|Is], Acc) ->
+ ii_1(Is, Acc);
+ii_1([], Acc) -> gb_trees:from_orddict(sort(Acc)).
+
+%% is_killed(Register, [Instruction], State) -> true|false
+%% Determine whether a register is killed in the instruction sequence.
+%% The state is used to allow us to determine the kill state
+%% across branches.
+
+is_killed(R, Is, St) ->
+ case is_killed_1(R, Is, St) of
+ false ->
+ %%io:format("nk ~p: ~P\n", [R,Is,15]),
+ false;
+ true -> true
+ end.
+
+is_killed_1(R, [{block,Blk}|Is], St) ->
+ case is_killed_1(R, Blk, St) of
+ true -> true;
+ false -> is_killed_1(R, Is, St)
+ end;
+is_killed_1(R, [{test,_,{f,Fail},As}|Is], St) ->
+ case not member(R, As) andalso is_reg_killed_at(R, Fail, St) of
+ false -> false;
+ true -> is_killed_1(R, Is, St)
+ end;
+is_killed_1(R, [{select_val,R,_,_}|_], _) -> false;
+is_killed_1(R, [{select_val,_,Fail,{list,Branches}}|_], St) ->
+ is_killed_at_all(R, [Fail|Branches], St);
+is_killed_1(R, [{jump,{f,F}}|_], St) ->
+ is_reg_killed_at(R, F, St);
+is_killed_1(Reg, Is, _) ->
+ beam_block:is_killed(Reg, Is).
+
+is_reg_killed_at(R, Lbl, #st{ll=Ll}=St) ->
+ Is = gb_trees:get(Lbl, Ll),
+ is_killed_1(R, Is, St).
+
+is_killed_at_all(R, [{f,Lbl}|T], St) ->
+ case is_reg_killed_at(R, Lbl, St) of
+ false -> false;
+ true -> is_killed_at_all(R, T, St)
+ end;
+is_killed_at_all(R, [_|T], St) ->
+ is_killed_at_all(R, T, St);
+is_killed_at_all(_, [], _) -> true.
+
+%% is_not_used(Register, [Instruction], State) -> true|false
+%% Determine whether a register is never used in the instruction sequence
+%% (it could still referenced by an allocate instruction, meaning that
+%% it MUST be initialized).
+%% The state is used to allow us to determine the usage state
+%% across branches.
+
+is_not_used(R, Is, St) ->
+ case is_not_used_1(R, Is, St) of
+ false ->
+ %%io:format("used ~p: ~P\n", [R,Is,15]),
+ false;
+ true -> true
+ end.
+
+is_not_used_1(R, [{block,Blk}|Is], St) ->
+ case is_not_used_1(R, Blk, St) of
+ true -> true;
+ false -> is_not_used_1(R, Is, St)
+ end;
+is_not_used_1(R, [{test,_,{f,Fail},As}|Is], St) ->
+ case not member(R, As) andalso is_reg_not_used_at(R, Fail, St) of
+ false -> false;
+ true -> is_not_used_1(R, Is, St)
+ end;
+is_not_used_1(R, [{select_val,R,_,_}|_], _) -> false;
+is_not_used_1(R, [{select_val,_,Fail,{list,Branches}}|_], St) ->
+ is_used_at_none(R, [Fail|Branches], St);
+is_not_used_1(R, [{jump,{f,F}}|_], St) ->
+ is_reg_not_used_at(R, F, St);
+is_not_used_1(Reg, Is, _) ->
+ beam_block:is_not_used(Reg, Is).
+
+is_reg_not_used_at(R, Lbl, #st{ll=Ll}=St) ->
+ Is = gb_trees:get(Lbl, Ll),
+ is_not_used_1(R, Is, St).
+
+is_used_at_none(R, [{f,Lbl}|T], St) ->
+ case is_reg_not_used_at(R, Lbl, St) of
+ false -> false;
+ true -> is_used_at_none(R, T, St)
+ end;
+is_used_at_none(R, [_|T], St) ->
+ is_used_at_none(R, T, St);
+is_used_at_none(_, [], _) -> true.
diff --git a/lib/dialyzer/test/options1_tests_SUITE_data/src/compiler/beam_clean.erl b/lib/dialyzer/test/options1_tests_SUITE_data/src/compiler/beam_clean.erl
new file mode 100644
index 0000000000..d47ae9c896
--- /dev/null
+++ b/lib/dialyzer/test/options1_tests_SUITE_data/src/compiler/beam_clean.erl
@@ -0,0 +1,232 @@
+%% ``The contents of this file are subject to the Erlang Public License,
+%% Version 1.1, (the "License"); you may not use this file except in
+%% compliance with the License. You should have received a copy of the
+%% Erlang Public License along with this software. If not, it can be
+%% retrieved via the world wide web at http://www.erlang.org/.
+%%
+%% Software distributed under the License is distributed on an "AS IS"
+%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
+%% the License for the specific language governing rights and limitations
+%% under the License.
+%%
+%% The Initial Developer of the Original Code is Ericsson Utvecklings AB.
+%% Portions created by Ericsson are Copyright 1999, Ericsson Utvecklings
+%% AB. All Rights Reserved.''
+%%
+%% $Id: beam_clean.erl,v 1.1 2008/12/17 09:53:41 mikpe Exp $
+%%
+%% Purpose : Clean up, such as removing unused labels and unused functions.
+
+-module(beam_clean).
+
+-export([module/2]).
+-import(lists, [member/2,map/2,foldl/3,mapfoldl/3,reverse/1]).
+
+module({Mod,Exp,Attr,Fs0,_}, _Opt) ->
+ Order = [Lbl || {function,_,_,Lbl,_} <- Fs0],
+ All = foldl(fun({function,_,_,Lbl,_}=Func,D) -> dict:store(Lbl, Func, D) end,
+ dict:new(), Fs0),
+ {WorkList,Used0} = exp_to_labels(Fs0, Exp),
+ Used = find_all_used(WorkList, All, Used0),
+ Fs1 = remove_unused(Order, Used, All),
+ {Fs,Lc} = clean_labels(Fs1),
+ {ok,{Mod,Exp,Attr,Fs,Lc}}.
+
+%% Convert the export list ({Name,Arity} pairs) to a list of entry labels.
+
+exp_to_labels(Fs, Exp) -> exp_to_labels(Fs, Exp, [], sets:new()).
+
+exp_to_labels([{function,Name,Arity,Lbl,_}|Fs], Exp, Acc, Used) ->
+ case member({Name,Arity}, Exp) of
+ true -> exp_to_labels(Fs, Exp, [Lbl|Acc], sets:add_element(Lbl, Used));
+ false -> exp_to_labels(Fs, Exp, Acc, Used)
+ end;
+exp_to_labels([], _, Acc, Used) -> {Acc,Used}.
+
+%% Remove the unused functions.
+
+remove_unused([F|Fs], Used, All) ->
+ case sets:is_element(F, Used) of
+ false -> remove_unused(Fs, Used, All);
+ true -> [dict:fetch(F, All)|remove_unused(Fs, Used, All)]
+ end;
+remove_unused([], _, _) -> [].
+
+%% Find all used functions.
+
+find_all_used([F|Fs0], All, Used0) ->
+ {function,_,_,_,Code} = dict:fetch(F, All),
+ {Fs,Used} = update_work_list(Code, {Fs0,Used0}),
+ find_all_used(Fs, All, Used);
+find_all_used([], _All, Used) -> Used.
+
+update_work_list([{call,_,{f,L}}|Is], Sets) ->
+ update_work_list(Is, add_to_work_list(L, Sets));
+update_work_list([{call_last,_,{f,L},_}|Is], Sets) ->
+ update_work_list(Is, add_to_work_list(L, Sets));
+update_work_list([{call_only,_,{f,L}}|Is], Sets) ->
+ update_work_list(Is, add_to_work_list(L, Sets));
+update_work_list([{make_fun,{f,L},_,_}|Is], Sets) ->
+ update_work_list(Is, add_to_work_list(L, Sets));
+update_work_list([{make_fun2,{f,L},_,_,_}|Is], Sets) ->
+ update_work_list(Is, add_to_work_list(L, Sets));
+update_work_list([_|Is], Sets) ->
+ update_work_list(Is, Sets);
+update_work_list([], Sets) -> Sets.
+
+add_to_work_list(F, {Fs,Used}=Sets) ->
+ case sets:is_element(F, Used) of
+ true -> Sets;
+ false -> {[F|Fs],sets:add_element(F, Used)}
+ end.
+
+
+%%%
+%%% Coalesce adjacent labels. Renumber all labels to eliminate gaps.
+%%% This cleanup will slightly reduce file size and slightly speed up loading.
+%%%
+%%% We also expand internal_is_record/3 to a sequence of instructions. It is done
+%%% here merely because this module will always be called even if optimization
+%%% is turned off. We don't want to do the expansion in beam_asm because we
+%%% want to see the expanded code in a .S file.
+%%%
+
+-record(st, {lmap, %Translation tables for labels.
+ entry, %Number of entry label.
+ lc %Label counter
+ }).
+
+clean_labels(Fs0) ->
+ St0 = #st{lmap=dict:new(),lc=1},
+ {Fs1,#st{lmap=Lmap,lc=Lc}} = mapfoldl(fun function_renumber/2, St0, Fs0),
+ {map(fun(F) -> function_replace(F, Lmap) end, Fs1),Lc}.
+
+function_renumber({function,Name,Arity,_Entry,Asm0}, St0) ->
+ {Asm,St} = renumber_labels(Asm0, [], St0),
+ {{function,Name,Arity,St#st.entry,Asm},St}.
+
+renumber_labels([{bif,internal_is_record,{f,_},
+ [Term,Tag,{integer,Arity}],Dst}|Is], Acc, St) ->
+ ContLabel = 900000000+2*St#st.lc,
+ FailLabel = ContLabel+1,
+ Fail = {f,FailLabel},
+ Tmp = Dst,
+ renumber_labels([{test,is_tuple,Fail,[Term]},
+ {test,test_arity,Fail,[Term,Arity]},
+ {get_tuple_element,Term,0,Tmp},
+ {test,is_eq_exact,Fail,[Tmp,Tag]},
+ {move,{atom,true},Dst},
+ {jump,{f,ContLabel}},
+ {label,FailLabel},
+ {move,{atom,false},Dst},
+ {label,ContLabel}|Is], Acc, St);
+renumber_labels([{test,internal_is_record,{f,_}=Fail,
+ [Term,Tag,{integer,Arity}]}|Is], Acc, St) ->
+ Tmp = {x,1023},
+ case Term of
+ {Reg,_} when Reg == x; Reg == y ->
+ renumber_labels([{test,is_tuple,Fail,[Term]},
+ {test,test_arity,Fail,[Term,Arity]},
+ {get_tuple_element,Term,0,Tmp},
+ {test,is_eq_exact,Fail,[Tmp,Tag]}|Is], Acc, St);
+ _ ->
+ renumber_labels([{jump,Fail}|Is], Acc, St)
+ end;
+renumber_labels([{label,Old}|Is], [{label,New}|_]=Acc, #st{lmap=D0}=St) ->
+ D = dict:store(Old, New, D0),
+ renumber_labels(Is, Acc, St#st{lmap=D});
+renumber_labels([{label,Old}|Is], Acc, St0) ->
+ New = St0#st.lc,
+ D = dict:store(Old, New, St0#st.lmap),
+ renumber_labels(Is, [{label,New}|Acc], St0#st{lmap=D,lc=New+1});
+renumber_labels([{func_info,_,_,_}=Fi|Is], Acc, St0) ->
+ renumber_labels(Is, [Fi|Acc], St0#st{entry=St0#st.lc});
+renumber_labels([I|Is], Acc, St0) ->
+ renumber_labels(Is, [I|Acc], St0);
+renumber_labels([], Acc, St0) -> {Acc,St0}.
+
+function_replace({function,Name,Arity,Entry,Asm0}, Dict) ->
+ Asm = case catch replace(Asm0, [], Dict) of
+ {'EXIT',_}=Reason ->
+ exit(Reason);
+ {error,{undefined_label,Lbl}=Reason} ->
+ io:format("Function ~s/~w refers to undefined label ~w\n",
+ [Name,Arity,Lbl]),
+ exit(Reason);
+ Asm1 when list(Asm1) -> Asm1
+ end,
+ {function,Name,Arity,Entry,Asm}.
+
+replace([{test,Test,{f,Lbl},Ops}|Is], Acc, D) ->
+ replace(Is, [{test,Test,{f,label(Lbl, D)},Ops}|Acc], D);
+replace([{select_val,R,{f,Fail0},{list,Vls0}}|Is], Acc, D) ->
+ Vls1 = map(fun ({f,L}) -> {f,label(L, D)};
+ (Other) -> Other end, Vls0),
+ Fail = label(Fail0, D),
+ case redundant_values(Vls1, Fail, []) of
+ [] ->
+ %% Oops, no choices left. The loader will not accept that.
+ %% Convert to a plain jump.
+ replace(Is, [{jump,{f,Fail}}|Acc], D);
+ Vls ->
+ replace(Is, [{select_val,R,{f,Fail},{list,Vls}}|Acc], D)
+ end;
+replace([{select_tuple_arity,R,{f,Fail},{list,Vls0}}|Is], Acc, D) ->
+ Vls = map(fun ({f,L}) -> {f,label(L, D)};
+ (Other) -> Other end, Vls0),
+ replace(Is, [{select_tuple_arity,R,{f,label(Fail, D)},{list,Vls}}|Acc], D);
+replace([{'try',R,{f,Lbl}}|Is], Acc, D) ->
+ replace(Is, [{'try',R,{f,label(Lbl, D)}}|Acc], D);
+replace([{'catch',R,{f,Lbl}}|Is], Acc, D) ->
+ replace(Is, [{'catch',R,{f,label(Lbl, D)}}|Acc], D);
+replace([{jump,{f,Lbl}}|Is], Acc, D) ->
+ replace(Is, [{jump,{f,label(Lbl, D)}}|Acc], D);
+replace([{loop_rec,{f,Lbl},R}|Is], Acc, D) ->
+ replace(Is, [{loop_rec,{f,label(Lbl, D)},R}|Acc], D);
+replace([{loop_rec_end,{f,Lbl}}|Is], Acc, D) ->
+ replace(Is, [{loop_rec_end,{f,label(Lbl, D)}}|Acc], D);
+replace([{wait,{f,Lbl}}|Is], Acc, D) ->
+ replace(Is, [{wait,{f,label(Lbl, D)}}|Acc], D);
+replace([{wait_timeout,{f,Lbl},To}|Is], Acc, D) ->
+ replace(Is, [{wait_timeout,{f,label(Lbl, D)},To}|Acc], D);
+replace([{bif,Name,{f,Lbl},As,R}|Is], Acc, D) when Lbl =/= 0 ->
+ replace(Is, [{bif,Name,{f,label(Lbl, D)},As,R}|Acc], D);
+replace([{call,Ar,{f,Lbl}}|Is], Acc, D) ->
+ replace(Is, [{call,Ar,{f,label(Lbl,D)}}|Acc], D);
+replace([{call_last,Ar,{f,Lbl},N}|Is], Acc, D) ->
+ replace(Is, [{call_last,Ar,{f,label(Lbl,D)},N}|Acc], D);
+replace([{call_only,Ar,{f,Lbl}}|Is], Acc, D) ->
+ replace(Is, [{call_only,Ar,{f,label(Lbl, D)}}|Acc], D);
+replace([{make_fun,{f,Lbl},U1,U2}|Is], Acc, D) ->
+ replace(Is, [{make_fun,{f,label(Lbl, D)},U1,U2}|Acc], D);
+replace([{make_fun2,{f,Lbl},U1,U2,U3}|Is], Acc, D) ->
+ replace(Is, [{make_fun2,{f,label(Lbl, D)},U1,U2,U3}|Acc], D);
+replace([{bs_init2,{f,Lbl},Sz,Words,R,F,Dst}|Is], Acc, D) when Lbl =/= 0 ->
+ replace(Is, [{bs_init2,{f,label(Lbl, D)},Sz,Words,R,F,Dst}|Acc], D);
+replace([{bs_put_integer,{f,Lbl},Bits,Unit,Fl,Val}|Is], Acc, D) when Lbl =/= 0 ->
+ replace(Is, [{bs_put_integer,{f,label(Lbl, D)},Bits,Unit,Fl,Val}|Acc], D);
+replace([{bs_put_binary,{f,Lbl},Bits,Unit,Fl,Val}|Is], Acc, D) when Lbl =/= 0 ->
+ replace(Is, [{bs_put_binary,{f,label(Lbl, D)},Bits,Unit,Fl,Val}|Acc], D);
+replace([{bs_put_float,{f,Lbl},Bits,Unit,Fl,Val}|Is], Acc, D) when Lbl =/= 0 ->
+ replace(Is, [{bs_put_float,{f,label(Lbl, D)},Bits,Unit,Fl,Val}|Acc], D);
+replace([{bs_final,{f,Lbl},R}|Is], Acc, D) when Lbl =/= 0 ->
+ replace(Is, [{bs_final,{f,label(Lbl, D)},R}|Acc], D);
+replace([{bs_add,{f,Lbl},Src,Dst}|Is], Acc, D) when Lbl =/= 0 ->
+ replace(Is, [{bs_add,{f,label(Lbl, D)},Src,Dst}|Acc], D);
+replace([{bs_bits_to_bytes,{f,Lbl},Bits,Dst}|Is], Acc, D) when Lbl =/= 0 ->
+ replace(Is, [{bs_bits_to_bytes,{f,label(Lbl, D)},Bits,Dst}|Acc], D);
+replace([I|Is], Acc, D) ->
+ replace(Is, [I|Acc], D);
+replace([], Acc, _) -> Acc.
+
+label(Old, D) ->
+ case dict:find(Old, D) of
+ {ok,Val} -> Val;
+ error -> throw({error,{undefined_label,Old}})
+ end.
+
+redundant_values([_,{f,Fail}|Vls], Fail, Acc) ->
+ redundant_values(Vls, Fail, Acc);
+redundant_values([Val,Lbl|Vls], Fail, Acc) ->
+ redundant_values(Vls, Fail, [Lbl,Val|Acc]);
+redundant_values([], _, Acc) -> reverse(Acc).
diff --git a/lib/dialyzer/test/options1_tests_SUITE_data/src/compiler/beam_dict.erl b/lib/dialyzer/test/options1_tests_SUITE_data/src/compiler/beam_dict.erl
new file mode 100644
index 0000000000..ddab957704
--- /dev/null
+++ b/lib/dialyzer/test/options1_tests_SUITE_data/src/compiler/beam_dict.erl
@@ -0,0 +1,196 @@
+%% ``The contents of this file are subject to the Erlang Public License,
+%% Version 1.1, (the "License"); you may not use this file except in
+%% compliance with the License. You should have received a copy of the
+%% Erlang Public License along with this software. If not, it can be
+%% retrieved via the world wide web at http://www.erlang.org/.
+%%
+%% Software distributed under the License is distributed on an "AS IS"
+%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
+%% the License for the specific language governing rights and limitations
+%% under the License.
+%%
+%% The Initial Developer of the Original Code is Ericsson Utvecklings AB.
+%% Portions created by Ericsson are Copyright 1999, Ericsson Utvecklings
+%% AB. All Rights Reserved.''
+%%
+%% $Id: beam_dict.erl,v 1.1 2008/12/17 09:53:41 mikpe Exp $
+%%
+%% Purpose : Maintain atom, import, and export tables for assembler.
+
+-module(beam_dict).
+
+-export([new/0, opcode/2, highest_opcode/1,
+ atom/2, local/4, export/4, import/4, string/2, lambda/5,
+ atom_table/1, local_table/1, export_table/1, import_table/1,
+ string_table/1,lambda_table/1]).
+
+-record(asm_dict,
+ {atoms = [], % [{Index, Atom}]
+ exports = [], % [{F, A, Label}]
+ locals = [], % [{F, A, Label}]
+ imports = [], % [{Index, {M, F, A}]
+ strings = [], % Deep list of characters
+ lambdas = [], % [{...}]
+ next_atom = 1,
+ next_import = 0,
+ string_offset = 0,
+ highest_opcode = 0
+ }).
+
+new() ->
+ #asm_dict{}.
+
+%% Remembers highest opcode.
+
+opcode(Op, Dict) when Dict#asm_dict.highest_opcode > Op -> Dict;
+opcode(Op, Dict) -> Dict#asm_dict{highest_opcode=Op}.
+
+%% Returns the highest opcode encountered.
+
+highest_opcode(#asm_dict{highest_opcode=Op}) -> Op.
+
+%% Returns the index for an atom (adding it to the atom table if necessary).
+%% atom(Atom, Dict) -> {Index, Dict'}
+
+atom(Atom, Dict) when atom(Atom) ->
+ NextIndex = Dict#asm_dict.next_atom,
+ case lookup_store(Atom, Dict#asm_dict.atoms, NextIndex) of
+ {Index, _, NextIndex} ->
+ {Index, Dict};
+ {Index, Atoms, NewIndex} ->
+ {Index, Dict#asm_dict{atoms=Atoms, next_atom=NewIndex}}
+ end.
+
+%% Remembers an exported function.
+%% export(Func, Arity, Label, Dict) -> Dict'
+
+export(Func, Arity, Label, Dict0) when atom(Func), integer(Arity), integer(Label) ->
+ {Index, Dict1} = atom(Func, Dict0),
+ Dict1#asm_dict{exports = [{Index, Arity, Label}| Dict1#asm_dict.exports]}.
+
+%% Remembers a local function.
+%% local(Func, Arity, Label, Dict) -> Dict'
+
+local(Func, Arity, Label, Dict0) when atom(Func), integer(Arity), integer(Label) ->
+ {Index,Dict1} = atom(Func, Dict0),
+ Dict1#asm_dict{locals = [{Index,Arity,Label}| Dict1#asm_dict.locals]}.
+
+%% Returns the index for an import entry (adding it to the import table if necessary).
+%% import(Mod, Func, Arity, Dict) -> {Index, Dict'}
+
+import(Mod, Func, Arity, Dict) when atom(Mod), atom(Func), integer(Arity) ->
+ NextIndex = Dict#asm_dict.next_import,
+ case lookup_store({Mod, Func, Arity}, Dict#asm_dict.imports, NextIndex) of
+ {Index, _, NextIndex} ->
+ {Index, Dict};
+ {Index, Imports, NewIndex} ->
+ {_, D1} = atom(Mod, Dict#asm_dict{imports=Imports, next_import=NewIndex}),
+ {_, D2} = atom(Func, D1),
+ {Index, D2}
+ end.
+
+%% Returns the index for a string in the string table (adding the string to the
+%% table if necessary).
+%% string(String, Dict) -> {Offset, Dict'}
+
+string(Str, Dict) when list(Str) ->
+ #asm_dict{strings = Strings, string_offset = NextOffset} = Dict,
+ case old_string(Str, Strings) of
+ {true, Offset} ->
+ {Offset, Dict};
+ false ->
+ NewDict = Dict#asm_dict{strings = Strings++Str,
+ string_offset = NextOffset+length(Str)},
+ {NextOffset, NewDict}
+ end.
+
+%% Returns the index for a funentry (adding it to the table if necessary).
+%% lambda(Dict, Lbl, Index, Uniq, NumFree) -> {Index,Dict'}
+
+lambda(Lbl, Index, OldUniq, NumFree, #asm_dict{lambdas=Lambdas0}=Dict) ->
+ OldIndex = length(Lambdas0),
+ Lambdas = [{Lbl,{OldIndex,Lbl,Index,NumFree,OldUniq}}|Lambdas0],
+ {OldIndex,Dict#asm_dict{lambdas=Lambdas}}.
+
+%% Returns the atom table.
+%% atom_table(Dict) -> [Length,AtomString...]
+
+atom_table(#asm_dict{atoms=Atoms, next_atom=NumAtoms}) ->
+ Sorted = lists:sort(Atoms),
+ Fun = fun({_, A}) ->
+ L = atom_to_list(A),
+ [length(L)|L]
+ end,
+ {NumAtoms-1, lists:map(Fun, Sorted)}.
+
+%% Returns the table of local functions.
+%% local_table(Dict) -> {NumLocals, [{Function, Arity, Label}...]}
+
+local_table(#asm_dict{locals = Locals}) ->
+ {length(Locals),Locals}.
+
+%% Returns the export table.
+%% export_table(Dict) -> {NumExports, [{Function, Arity, Label}...]}
+
+export_table(#asm_dict{exports = Exports}) ->
+ {length(Exports), Exports}.
+
+%% Returns the import table.
+%% import_table(Dict) -> {NumImports, [{Module, Function, Arity}...]}
+
+import_table(Dict) ->
+ #asm_dict{imports = Imports, next_import = NumImports} = Dict,
+ Sorted = lists:sort(Imports),
+ Fun = fun({_, {Mod, Func, Arity}}) ->
+ {Atom0, _} = atom(Mod, Dict),
+ {Atom1, _} = atom(Func, Dict),
+ {Atom0, Atom1, Arity}
+ end,
+ {NumImports, lists:map(Fun, Sorted)}.
+
+string_table(#asm_dict{strings = Strings, string_offset = Size}) ->
+ {Size, Strings}.
+
+lambda_table(#asm_dict{locals=Loc0,lambdas=Lambdas0}) ->
+ Lambdas1 = sofs:relation(Lambdas0),
+ Loc = sofs:relation([{Lbl,{F,A}} || {F,A,Lbl} <- Loc0]),
+ Lambdas2 = sofs:relative_product1(Lambdas1, Loc),
+ Lambdas = [<<F:32,A:32,Lbl:32,Index:32,NumFree:32,OldUniq:32>> ||
+ {{_,Lbl,Index,NumFree,OldUniq},{F,A}} <- sofs:to_external(Lambdas2)],
+ {length(Lambdas),Lambdas}.
+
+%%% Local helper functions.
+
+lookup_store(Key, Dict, NextIndex) ->
+ case catch lookup_store1(Key, Dict, NextIndex) of
+ Index when integer(Index) ->
+ {Index, Dict, NextIndex};
+ {Index, NewDict} ->
+ {Index, NewDict, NextIndex+1}
+ end.
+
+lookup_store1(Key, [Pair|Dict], NextIndex) when Key > element(2, Pair) ->
+ {Index, NewDict} = lookup_store1(Key, Dict, NextIndex),
+ {Index, [Pair|NewDict]};
+lookup_store1(Key, [{Index, Key}|_Dict], _NextIndex) ->
+ throw(Index);
+lookup_store1(Key, Dict, NextIndex) ->
+ {NextIndex, [{NextIndex, Key}|Dict]}.
+
+%% Search for string Str in the string pool Pool.
+%% old_string(Str, Pool) -> false | {true, Offset}
+
+old_string(Str, Pool) ->
+ old_string(Str, Pool, 0).
+
+old_string([C|Str], [C|Pool], Index) ->
+ case lists:prefix(Str, Pool) of
+ true ->
+ {true, Index};
+ false ->
+ old_string([C|Str], Pool, Index+1)
+ end;
+old_string(Str, [_|Pool], Index) ->
+ old_string(Str, Pool, Index+1);
+old_string(_Str, [], _Index) ->
+ false.
diff --git a/lib/dialyzer/test/options1_tests_SUITE_data/src/compiler/beam_disasm.erl b/lib/dialyzer/test/options1_tests_SUITE_data/src/compiler/beam_disasm.erl
new file mode 100644
index 0000000000..451b83db66
--- /dev/null
+++ b/lib/dialyzer/test/options1_tests_SUITE_data/src/compiler/beam_disasm.erl
@@ -0,0 +1,964 @@
+%% -*- erlang-indent-level: 4 -*-
+%%=======================================================================
+%% File : beam_disasm.erl
+%% Author : Kostis Sagonas
+%% Description : Disassembles an R5-R10 .beam file into symbolic BEAM code
+%%=======================================================================
+%% $Id: beam_disasm.erl,v 1.1 2008/12/17 09:53:41 mikpe Exp $
+%%=======================================================================
+%% Notes:
+%% 1. It does NOT work for .beam files of previous BEAM versions.
+%% 2. If handling of new BEAM instructions is needed, this should be
+%% inserted at the end of function resolve_inst().
+%%=======================================================================
+
+-module(beam_disasm).
+
+-export([file/1, format_error/1]).
+
+-author("Kostis Sagonas").
+
+-include("beam_opcodes.hrl").
+
+%%-----------------------------------------------------------------------
+
+-define(NO_DEBUG(Str,Xs),ok).
+-define(DEBUG(Str,Xs),io:format(Str,Xs)).
+-define(exit(Reason),exit({?MODULE,?LINE,Reason})).
+
+%%-----------------------------------------------------------------------
+%% Error information
+
+format_error({error, Module, Error}) ->
+ Module:format_error(Error);
+format_error({internal, Error}) ->
+ io_lib:format("~p: disassembly failed with reason ~P.",
+ [?MODULE, Error, 25]).
+
+%%-----------------------------------------------------------------------
+%% The main exported function
+%% File is either a file name or a binary containing the code.
+%% Returns `{beam_file, [...]}' or `{error, Module, Reason}'.
+%% Call `format_error({error, Module, Reason})' for an error string.
+%%-----------------------------------------------------------------------
+
+file(File) ->
+ case beam_lib:info(File) of
+ Info when list(Info) ->
+ {value,{chunks,Chunks}} = lists:keysearch(chunks,1,Info),
+ case catch process_chunks(File, Chunks) of
+ {'EXIT', Error} ->
+ {error, ?MODULE, {internal, Error}};
+ Result ->
+ Result
+ end;
+ Error ->
+ Error
+ end.
+
+%%-----------------------------------------------------------------------
+%% Interface might need to be revised -- do not depend on it.
+%%-----------------------------------------------------------------------
+
+process_chunks(F,ChunkInfoList) ->
+ {ok,{_,Chunks}} = beam_lib:chunks(F, ["Atom","Code","StrT","ImpT","ExpT"]),
+ [{"Atom",AtomBin},{"Code",CodeBin},{"StrT",StrBin},
+ {"ImpT",ImpBin},{"ExpT",ExpBin}] = Chunks,
+ LambdaBin = optional_chunk(F, "FunT", ChunkInfoList),
+ LocBin = optional_chunk(F, "LocT", ChunkInfoList),
+ AttrBin = optional_chunk(F, "Attr", ChunkInfoList),
+ CompBin = optional_chunk(F, "CInf", ChunkInfoList),
+ Atoms = beam_disasm_atoms(AtomBin),
+ Exports = beam_disasm_exports(ExpBin, Atoms),
+ Imports = beam_disasm_imports(ImpBin, Atoms),
+ LocFuns = beam_disasm_exports(LocBin, Atoms),
+ Lambdas = beam_disasm_lambdas(LambdaBin, Atoms),
+ Str = beam_disasm_strings(StrBin),
+ Str1 = binary_to_list(Str), %% for debugging -- use Str as far as poss.
+ Sym_Code = beam_disasm_code(CodeBin,Atoms,Imports,Str,Lambdas),
+ Attributes = beam_disasm_attributes(AttrBin),
+ CompInfo = beam_disasm_compilation_info(CompBin),
+ All = [{exports,Exports},
+ {imports,Imports},
+ {code,Sym_Code},
+ {atoms,Atoms},
+ {local_funs,LocFuns},
+ {strings,Str1},
+ {attributes,Attributes},
+ {comp_info,CompInfo}],
+ {beam_file,[Item || {_Key,Data}=Item <- All, Data =/= none]}.
+
+%%-----------------------------------------------------------------------
+%% Retrieve an optional chunk or none if the chunk doesn't exist.
+%%-----------------------------------------------------------------------
+
+optional_chunk(F, ChunkTag, ChunkInfo) ->
+ case lists:keymember(ChunkTag, 1, ChunkInfo) of
+ true ->
+ {ok,{_,[{ChunkTag,Chunk}]}} = beam_lib:chunks(F, [ChunkTag]),
+ Chunk;
+ false -> none
+ end.
+
+%%-----------------------------------------------------------------------
+%% UTILITIES -- these actually exist in file "beam_lib"
+%% -- they should be moved into a common utils file.
+%%-----------------------------------------------------------------------
+
+i32([X1,X2,X3,X4]) ->
+ (X1 bsl 24) bor (X2 bsl 16) bor (X3 bsl 8) bor X4.
+
+get_int(B) ->
+ {I, B1} = split_binary(B, 4),
+ {i32(binary_to_list(I)), B1}.
+
+%%-----------------------------------------------------------------------
+%% Disassembles the atom table of a BEAM file.
+%% - atoms are stored in order 1 ... N (N = Num_atoms, in fact),
+%% - each atom name consists of a length byte, followed by that many
+%% bytes of name
+%% (nb: atom names max 255 chars?!)
+%%-----------------------------------------------------------------------
+
+beam_disasm_atoms(AtomTabBin) ->
+ {_NumAtoms,B} = get_int(AtomTabBin),
+ disasm_atoms(B).
+
+disasm_atoms(AtomBin) ->
+ disasm_atoms(binary_to_list(AtomBin),1).
+
+disasm_atoms([Len|Xs],N) ->
+ {AtomName,Rest} = get_atom_name(Len,Xs),
+ [{N,list_to_atom(AtomName)}|disasm_atoms(Rest,N+1)];
+disasm_atoms([],_) ->
+ [].
+
+get_atom_name(Len,Xs) ->
+ get_atom_name(Len,Xs,[]).
+
+get_atom_name(N,[X|Xs],RevName) when N > 0 ->
+ get_atom_name(N-1,Xs,[X|RevName]);
+get_atom_name(0,Xs,RevName) ->
+ { lists:reverse(RevName), Xs }.
+
+%%-----------------------------------------------------------------------
+%% Disassembles the export table of a BEAM file.
+%%-----------------------------------------------------------------------
+
+beam_disasm_exports(none, _) -> none;
+beam_disasm_exports(ExpTabBin, Atoms) ->
+ {_NumAtoms,B} = get_int(ExpTabBin),
+ disasm_exports(B,Atoms).
+
+disasm_exports(Bin,Atoms) ->
+ resolve_exports(collect_exports(binary_to_list(Bin)),Atoms).
+
+collect_exports([F3,F2,F1,F0,A3,A2,A1,A0,L3,L2,L1,L0|Exps]) ->
+ [{i32([F3,F2,F1,F0]), % F = function (atom ID)
+ i32([A3,A2,A1,A0]), % A = arity (int)
+ i32([L3,L2,L1,L0])} % L = label (int)
+ |collect_exports(Exps)];
+collect_exports([]) ->
+ [].
+
+resolve_exports(Exps,Atoms) ->
+ [ {lookup_key(F,Atoms), A, L} || {F,A,L} <- Exps ].
+
+%%-----------------------------------------------------------------------
+%% Disassembles the import table of a BEAM file.
+%%-----------------------------------------------------------------------
+
+beam_disasm_imports(ExpTabBin,Atoms) ->
+ {_NumAtoms,B} = get_int(ExpTabBin),
+ disasm_imports(B,Atoms).
+
+disasm_imports(Bin,Atoms) ->
+ resolve_imports(collect_imports(binary_to_list(Bin)),Atoms).
+
+collect_imports([M3,M2,M1,M0,F3,F2,F1,F0,A3,A2,A1,A0|Exps]) ->
+ [{i32([M3,M2,M1,M0]), % M = module (atom ID)
+ i32([F3,F2,F1,F0]), % F = function (atom ID)
+ i32([A3,A2,A1,A0])} % A = arity (int)
+ |collect_imports(Exps)];
+collect_imports([]) ->
+ [].
+
+resolve_imports(Exps,Atoms) ->
+ [{extfunc,lookup_key(M,Atoms),lookup_key(F,Atoms),A} || {M,F,A} <- Exps ].
+
+%%-----------------------------------------------------------------------
+%% Disassembles the lambda (fun) table of a BEAM file.
+%%-----------------------------------------------------------------------
+
+beam_disasm_lambdas(none, _) -> none;
+beam_disasm_lambdas(<<_:32,Tab/binary>>, Atoms) ->
+ disasm_lambdas(Tab, Atoms, 0).
+
+disasm_lambdas(<<F:32,A:32,Lbl:32,Index:32,NumFree:32,OldUniq:32,More/binary>>,
+ Atoms, OldIndex) ->
+ Info = {lookup_key(F, Atoms),A,Lbl,Index,NumFree,OldUniq},
+ [{OldIndex,Info}|disasm_lambdas(More, Atoms, OldIndex+1)];
+disasm_lambdas(<<>>, _, _) -> [].
+
+%%-----------------------------------------------------------------------
+%% Disassembles the code chunk of a BEAM file:
+%% - The code is first disassembled into a long list of instructions.
+%% - This list is then split into functions and all names are resolved.
+%%-----------------------------------------------------------------------
+
+beam_disasm_code(CodeBin,Atoms,Imports,Str,Lambdas) ->
+ [_SS3,_SS2,_SS1,_SS0, % Sub-Size (length of information before code)
+ _IS3,_IS2,_IS1,_IS0, % Instruction Set Identifier (always 0)
+ _OM3,_OM2,_OM1,_OM0, % Opcode Max
+ _L3,_L2,_L1,_L0,_F3,_F2,_F1,_F0|Code] = binary_to_list(CodeBin),
+ case catch disasm_code(Code, Atoms) of
+ {'EXIT',Rsn} ->
+ ?NO_DEBUG('code disasm failed: ~p~n',[Rsn]),
+ ?exit(Rsn);
+ DisasmCode ->
+ Functions = get_function_chunks(DisasmCode),
+ LocLabels = local_labels(Functions),
+ [resolve_names(F,Imports,Str,LocLabels,Lambdas) || F <- Functions]
+ end.
+
+%%-----------------------------------------------------------------------
+
+disasm_code([B|Bs], Atoms) ->
+ {Instr,RestBs} = disasm_instr(B, Bs, Atoms),
+ [Instr|disasm_code(RestBs, Atoms)];
+disasm_code([], _) -> [].
+
+%%-----------------------------------------------------------------------
+%% Splits the code stream into chunks representing the code of functions.
+%%
+%% NOTE: code actually looks like
+%% label L1: ... label Ln:
+%% func_info ...
+%% label entry:
+%% ...
+%% <on failure, use label Li to show where things died>
+%% ...
+%% So the labels before each func_info should be included as well.
+%% Ideally, only one such label is needed, but the BEAM compiler
+%% before R8 didn't care to remove the redundant ones.
+%%-----------------------------------------------------------------------
+
+get_function_chunks([I|Code]) ->
+ {LastI,RestCode,Labs} = split_head_labels(I,Code,[]),
+ get_funs(LastI,RestCode,Labs,[]);
+get_function_chunks([]) ->
+ ?exit(empty_code_segment).
+
+get_funs(PrevI,[I|Is],RevF,RevFs) ->
+ case I of
+ {func_info,_Info} ->
+ [H|T] = RevF,
+ {Last,Fun,TrailingLabels} = split_head_labels(H,T,[]),
+ get_funs(I, Is, [PrevI|TrailingLabels], add_funs([Last|Fun],RevFs));
+ _ ->
+ get_funs(I, Is, [PrevI|RevF], RevFs)
+ end;
+get_funs(PrevI,[],RevF,RevFs) ->
+ case PrevI of
+ {int_code_end,[]} ->
+ emit_funs(add_fun(RevF,RevFs));
+ _ ->
+ ?DEBUG('warning: code segment did not end with int_code_end~n',[]),
+ emit_funs(add_funs([PrevI|RevF],RevFs))
+ end.
+
+split_head_labels({label,L},[I|Code],Labs) ->
+ split_head_labels(I,Code,[{label,L}|Labs]);
+split_head_labels(I,Code,Labs) ->
+ {I,Code,Labs}.
+
+add_fun([],Fs) ->
+ Fs;
+add_fun(F,Fs) ->
+ add_funs(F,Fs).
+
+add_funs(F,Fs) ->
+ [ lists:reverse(F) | Fs ].
+
+emit_funs(Fs) ->
+ lists:reverse(Fs).
+
+%%-----------------------------------------------------------------------
+%% Collects local labels -- I am not sure this is 100% what is needed.
+%%-----------------------------------------------------------------------
+
+local_labels(Funs) ->
+ [local_label(Fun) || Fun <- Funs].
+
+%% The first clause below attempts to provide some (limited form of)
+%% backwards compatibility; it is not needed for .beam files generated
+%% by the R8 compiler. The clause should one fine day be taken out.
+local_label([{label,_},{label,L}|Code]) ->
+ local_label([{label,L}|Code]);
+local_label([{label,_},
+ {func_info,[M0,F0,{u,A}]},
+ {label,[{u,L1}]}|_]) ->
+ {atom,M} = resolve_arg(M0),
+ {atom,F} = resolve_arg(F0),
+ {L1, {M, F, A}};
+local_label(Code) ->
+ io:format('beam_disasm: no label in ~p~n', [Code]),
+ {-666,{none,none,0}}.
+
+%%-----------------------------------------------------------------------
+%% Disassembles a single BEAM instruction; most instructions are handled
+%% in a generic way; indexing instructions are handled separately.
+%%-----------------------------------------------------------------------
+
+disasm_instr(B, Bs, Atoms) ->
+ {SymOp,Arity} = beam_opcodes:opname(B),
+ case SymOp of
+ select_val ->
+ disasm_select_inst(select_val, Bs, Atoms);
+ select_tuple_arity ->
+ disasm_select_inst(select_tuple_arity, Bs, Atoms);
+ _ ->
+ case catch decode_n_args(Arity, Bs, Atoms) of
+ {'EXIT',Rsn} ->
+ ?NO_DEBUG("decode_n_args(~p,~p) failed~n",[Arity,Bs]),
+ {{'EXIT',{SymOp,Arity,Rsn}},[]};
+ {Args,RestBs} ->
+ ?NO_DEBUG("instr ~p~n",[{SymOp,Args}]),
+ {{SymOp,Args}, RestBs}
+ end
+ end.
+
+%%-----------------------------------------------------------------------
+%% Disassembles a BEAM select_* instruction used for indexing.
+%% Currently handles {select_val,3} and {select_tuple_arity,3} insts.
+%%
+%% The arruments of a "select"-type instruction look as follows:
+%% <reg>, {f,FailLabel}, {list, <num cases>, [<case1> ... <caseN>]}
+%% where each case is of the form [symbol,{f,Label}].
+%%-----------------------------------------------------------------------
+
+disasm_select_inst(Inst, Bs, Atoms) ->
+ {X, Bs1} = decode_arg(Bs, Atoms),
+ {F, Bs2} = decode_arg(Bs1, Atoms),
+ {Z, Bs3} = decode_arg(Bs2, Atoms),
+ {U, Bs4} = decode_arg(Bs3, Atoms),
+ {u,Len} = U,
+ {List, RestBs} = decode_n_args(Len, Bs4, Atoms),
+ {{Inst,[X,F,{Z,U,List}]},RestBs}.
+
+%%-----------------------------------------------------------------------
+%% decode_arg([Byte]) -> { Arg, [Byte] }
+%%
+%% - an arg can have variable length, so we must return arg + remaining bytes
+%% - decodes an argument into its 'raw' form: { Tag, Value }
+%% several types map to a single tag, so the byte code instr must then
+%% assign a type to it
+%%-----------------------------------------------------------------------
+
+decode_arg([B|Bs]) ->
+ Tag = decode_tag(B band 2#111),
+ ?NO_DEBUG('Tag = ~p, B = ~p, Bs = ~p~n',[Tag,B,Bs]),
+ case Tag of
+ z ->
+ decode_z_tagged(Tag, B, Bs);
+ _ ->
+ %% all other cases are handled as if they were integers
+ decode_int(Tag, B, Bs)
+ end.
+
+decode_arg([B|Bs0], Atoms) ->
+ Tag = decode_tag(B band 2#111),
+ ?NO_DEBUG('Tag = ~p, B = ~p, Bs = ~p~n',[Tag,B,Bs]),
+ case Tag of
+ z ->
+ decode_z_tagged(Tag, B, Bs0);
+ a ->
+ %% atom or nil
+ case decode_int(Tag, B, Bs0) of
+ {{a,0},Bs} -> {nil,Bs};
+ {{a,I},Bs} -> {{atom,lookup_key(I, Atoms)},Bs}
+ end;
+ _ ->
+ %% all other cases are handled as if they were integers
+ decode_int(Tag, B, Bs0)
+ end.
+
+%%-----------------------------------------------------------------------
+%% Decodes an integer value. Handles positives, negatives, and bignums.
+%%
+%% Tries to do the opposite of:
+%% beam_asm:encode(1, 5) = [81]
+%% beam_asm:encode(1, 1000) = [105,232]
+%% beam_asm:encode(1, 2047) = [233,255]
+%% beam_asm:encode(1, 2048) = [25,8,0]
+%% beam_asm:encode(1,-1) = [25,255,255]
+%% beam_asm:encode(1,-4294967295) = [121,255,0,0,0,1]
+%% beam_asm:encode(1, 4294967295) = [121,0,255,255,255,255]
+%% beam_asm:encode(1, 429496729501) = [121,99,255,255,255,157]
+%%-----------------------------------------------------------------------
+
+decode_int(Tag,B,Bs) when (B band 16#08) == 0 ->
+ %% N < 16 = 4 bits, NNNN:0:TTT
+ N = B bsr 4,
+ {{Tag,N},Bs};
+decode_int(Tag,B,Bs) when (B band 16#10) == 0 ->
+ %% N < 2048 = 11 bits = 3:8 bits, NNN:01:TTT, NNNNNNNN
+ [B1|Bs1] = Bs,
+ Val0 = B band 2#11100000,
+ N = (Val0 bsl 3) bor B1,
+ ?NO_DEBUG('NNN:01:TTT, NNNNNNNN = ~n~p:01:~p, ~p = ~p~n', [Val0,Tag,B,N]),
+ {{Tag,N},Bs1};
+decode_int(Tag,B,Bs) ->
+ {Len,Bs1} = decode_int_length(B,Bs),
+ {IntBs,RemBs} = take_bytes(Len,Bs1),
+ N = build_arg(IntBs),
+ [F|_] = IntBs,
+ Num = if F > 127, Tag == i -> decode_negative(N,Len);
+ true -> N
+ end,
+ ?NO_DEBUG('Len = ~p, IntBs = ~p, Num = ~p~n', [Len,IntBs,Num]),
+ {{Tag,Num},RemBs}.
+
+decode_int_length(B,Bs) ->
+ %% The following imitates get_erlang_integer() in beam_load.c
+ %% Len is the size of the integer value in bytes
+ case B bsr 5 of
+ 7 ->
+ {Arg,ArgBs} = decode_arg(Bs),
+ case Arg of
+ {u,L} ->
+ {L+9,ArgBs}; % 9 stands for 7+2
+ _ ->
+ ?exit({decode_int,weird_bignum_sublength,Arg})
+ end;
+ L ->
+ {L+2,Bs}
+ end.
+
+decode_negative(N,Len) ->
+ N - (1 bsl (Len*8)). % 8 is number of bits in a byte
+
+%%-----------------------------------------------------------------------
+%% Decodes lists and floating point numbers.
+%%-----------------------------------------------------------------------
+
+decode_z_tagged(Tag,B,Bs) when (B band 16#08) == 0 ->
+ N = B bsr 4,
+ case N of
+ 0 -> % float
+ decode_float(Bs);
+ 1 -> % list
+ {{Tag,N},Bs};
+ 2 -> % fr
+ decode_fr(Bs);
+ 3 -> % allocation list
+ decode_alloc_list(Bs);
+ _ ->
+ ?exit({decode_z_tagged,{invalid_extended_tag,N}})
+ end;
+decode_z_tagged(_,B,_) ->
+ ?exit({decode_z_tagged,{weird_value,B}}).
+
+decode_float(Bs) ->
+ {FL,RestBs} = take_bytes(8,Bs),
+ <<Float:64/float>> = list_to_binary(FL),
+ {{float,Float},RestBs}.
+
+decode_fr(Bs) ->
+ {{u,Fr},RestBs} = decode_arg(Bs),
+ {{fr,Fr},RestBs}.
+
+decode_alloc_list(Bs) ->
+ {{u,N},RestBs} = decode_arg(Bs),
+ decode_alloc_list_1(N, RestBs, []).
+
+decode_alloc_list_1(0, RestBs, Acc) ->
+ {{u,{alloc,lists:reverse(Acc)}},RestBs};
+decode_alloc_list_1(N, Bs0, Acc) ->
+ {{u,Type},Bs1} = decode_arg(Bs0),
+ {{u,Val},Bs} = decode_arg(Bs1),
+ case Type of
+ 0 ->
+ decode_alloc_list_1(N-1, Bs, [{words,Val}|Acc]);
+ 1 ->
+ decode_alloc_list_1(N-1, Bs, [{floats,Val}|Acc])
+ end.
+
+%%-----------------------------------------------------------------------
+%% take N bytes from a stream, return { Taken_bytes, Remaining_bytes }
+%%-----------------------------------------------------------------------
+
+take_bytes(N,Bs) ->
+ take_bytes(N,Bs,[]).
+
+take_bytes(N,[B|Bs],Acc) when N > 0 ->
+ take_bytes(N-1,Bs,[B|Acc]);
+take_bytes(0,Bs,Acc) ->
+ { lists:reverse(Acc), Bs }.
+
+%%-----------------------------------------------------------------------
+%% from a list of bytes Bn,Bn-1,...,B1,B0
+%% build (Bn << 8*n) bor ... bor B1 << 8 bor B0 << 0
+%%-----------------------------------------------------------------------
+
+build_arg(Bs) ->
+ build_arg(Bs,0).
+
+build_arg([B|Bs],N) ->
+ build_arg(Bs, (N bsl 8) bor B);
+build_arg([],N) ->
+ N.
+
+%%-----------------------------------------------------------------------
+%% Decodes a bunch of arguments and returns them in a list
+%%-----------------------------------------------------------------------
+
+decode_n_args(N, Bs, Atoms) when N >= 0 ->
+ decode_n_args(N, [], Bs, Atoms).
+
+decode_n_args(N, Acc, Bs0, Atoms) when N > 0 ->
+ {A1,Bs} = decode_arg(Bs0, Atoms),
+ decode_n_args(N-1, [A1|Acc], Bs, Atoms);
+decode_n_args(0, Acc, Bs, _) ->
+ {lists:reverse(Acc),Bs}.
+
+%%-----------------------------------------------------------------------
+%% Convert a numeric tag value into a symbolic one
+%%-----------------------------------------------------------------------
+
+decode_tag(?tag_u) -> u;
+decode_tag(?tag_i) -> i;
+decode_tag(?tag_a) -> a;
+decode_tag(?tag_x) -> x;
+decode_tag(?tag_y) -> y;
+decode_tag(?tag_f) -> f;
+decode_tag(?tag_h) -> h;
+decode_tag(?tag_z) -> z;
+decode_tag(X) -> ?exit({unknown_tag,X}).
+
+%%-----------------------------------------------------------------------
+%% - replace all references {a,I} with the atom with index I (or {atom,A})
+%% - replace all references to {i,K} in an external call position with
+%% the proper MFA (position in list, first elt = 0, yields MFA to use)
+%% - resolve strings, represented as <offset, length>, into their
+%% actual values by using string table
+%% (note: string table should be passed as a BINARY so that we can
+%% use binary_to_list/3!)
+%% - convert instruction to its readable form ...
+%%
+%% Currently, only the first three are done (systematically, at least).
+%%
+%% Note: It MAY be premature to remove the lists of args, since that
+%% representation means it is simpler to iterate over all args, etc.
+%%-----------------------------------------------------------------------
+
+resolve_names(Fun, Imports, Str, Lbls, Lambdas) ->
+ [resolve_inst(Instr, Imports, Str, Lbls, Lambdas) || Instr <- Fun].
+
+%%
+%% New make_fun2/4 instruction added in August 2001 (R8).
+%% We handle it specially here to avoid adding an argument to
+%% the clause for every instruction.
+%%
+
+resolve_inst({make_fun2,Args},_,_,Lbls,Lambdas) ->
+ [OldIndex] = resolve_args(Args),
+ {value,{OldIndex,{F,A,_Lbl,_Index,NumFree,OldUniq}}} =
+ lists:keysearch(OldIndex, 1, Lambdas),
+ [{_,{M,_,_}}|_] = Lbls, % Slighly kludgy.
+ {make_fun2,{M,F,A},OldIndex,OldUniq,NumFree};
+resolve_inst(Instr, Imports, Str, Lbls, _Lambdas) ->
+ resolve_inst(Instr, Imports, Str, Lbls).
+
+resolve_inst({label,[{u,L}]},_,_,_) ->
+ {label,L};
+resolve_inst({func_info,RawMFA},_,_,_) ->
+ {func_info,resolve_args(RawMFA)};
+% resolve_inst(int_code_end,_,_,_,_) -> % instruction already handled
+% int_code_end; % should not really be handled here
+resolve_inst({call,[{u,N},{f,L}]},_,_,Lbls) ->
+ {call,N,catch lookup_key(L,Lbls)};
+resolve_inst({call_last,[{u,N},{f,L},{u,U}]},_,_,Lbls) ->
+ {call_last,N,catch lookup_key(L,Lbls),U};
+resolve_inst({call_only,[{u,N},{f,L}]},_,_,Lbls) ->
+ {call_only,N,catch lookup_key(L,Lbls)};
+resolve_inst({call_ext,[{u,N},{u,MFAix}]},Imports,_,_) ->
+ {call_ext,N,catch lists:nth(MFAix+1,Imports)};
+resolve_inst({call_ext_last,[{u,N},{u,MFAix},{u,X}]},Imports,_,_) ->
+ {call_ext_last,N,catch lists:nth(MFAix+1,Imports),X};
+resolve_inst({bif0,Args},Imports,_,_) ->
+ [Bif,Reg] = resolve_args(Args),
+ {extfunc,_Mod,BifName,_Arity} = lists:nth(Bif+1,Imports),
+ %?NO_DEBUG('bif0(~p, ~p)~n',[BifName,Reg]),
+ {bif,BifName,nofail,[],Reg};
+resolve_inst({bif1,Args},Imports,_,_) ->
+ [F,Bif,A1,Reg] = resolve_args(Args),
+ {extfunc,_Mod,BifName,_Arity} = lists:nth(Bif+1,Imports),
+ %?NO_DEBUG('bif1(~p, ~p, ~p, ~p, ~p)~n',[Bif,BifName,F,[A1],Reg]),
+ {bif,BifName,F,[A1],Reg};
+resolve_inst({bif2,Args},Imports,_,_) ->
+ [F,Bif,A1,A2,Reg] = resolve_args(Args),
+ {extfunc,_Mod,BifName,_Arity} = lists:nth(Bif+1,Imports),
+ %?NO_DEBUG('bif2(~p, ~p, ~p, ~p, ~p)~n',[Bif,BifName,F,[A1,A2],Reg]),
+ {bif,BifName,F,[A1,A2],Reg};
+resolve_inst({allocate,[{u,X0},{u,X1}]},_,_,_) ->
+ {allocate,X0,X1};
+resolve_inst({allocate_heap,[{u,X0},{u,X1},{u,X2}]},_,_,_) ->
+ {allocate_heap,X0,X1,X2};
+resolve_inst({allocate_zero,[{u,X0},{u,X1}]},_,_,_) ->
+ {allocate_zero,X0,X1};
+resolve_inst({allocate_heap_zero,[{u,X0},{u,X1},{u,X2}]},_,_,_) ->
+ {allocate_heap_zero,X0,X1,X2};
+resolve_inst({test_heap,[{u,X0},{u,X1}]},_,_,_) ->
+ {test_heap,X0,X1};
+resolve_inst({init,[Dst]},_,_,_) ->
+ {init,Dst};
+resolve_inst({deallocate,[{u,L}]},_,_,_) ->
+ {deallocate,L};
+resolve_inst({return,[]},_,_,_) ->
+ return;
+resolve_inst({send,[]},_,_,_) ->
+ send;
+resolve_inst({remove_message,[]},_,_,_) ->
+ remove_message;
+resolve_inst({timeout,[]},_,_,_) ->
+ timeout;
+resolve_inst({loop_rec,[Lbl,Dst]},_,_,_) ->
+ {loop_rec,Lbl,Dst};
+resolve_inst({loop_rec_end,[Lbl]},_,_,_) ->
+ {loop_rec_end,Lbl};
+resolve_inst({wait,[Lbl]},_,_,_) ->
+ {wait,Lbl};
+resolve_inst({wait_timeout,[Lbl,Int]},_,_,_) ->
+ {wait_timeout,Lbl,resolve_arg(Int)};
+resolve_inst({m_plus,Args},_,_,_) ->
+ [W,SrcR1,SrcR2,DstR] = resolve_args(Args),
+ {arithbif,'+',W,[SrcR1,SrcR2],DstR};
+resolve_inst({m_minus,Args},_,_,_) ->
+ [W,SrcR1,SrcR2,DstR] = resolve_args(Args),
+ {arithbif,'-',W,[SrcR1,SrcR2],DstR};
+resolve_inst({m_times,Args},_,_,_) ->
+ [W,SrcR1,SrcR2,DstR] = resolve_args(Args),
+ {arithbif,'*',W,[SrcR1,SrcR2],DstR};
+resolve_inst({m_div,Args},_,_,_) ->
+ [W,SrcR1,SrcR2,DstR] = resolve_args(Args),
+ {arithbif,'/',W,[SrcR1,SrcR2],DstR};
+resolve_inst({int_div,Args},_,_,_) ->
+ [W,SrcR1,SrcR2,DstR] = resolve_args(Args),
+ {arithbif,'div',W,[SrcR1,SrcR2],DstR};
+resolve_inst({int_rem,Args},_,_,_) ->
+ [W,SrcR1,SrcR2,DstR] = resolve_args(Args),
+ {arithbif,'rem',W,[SrcR1,SrcR2],DstR};
+resolve_inst({int_band,Args},_,_,_) ->
+ [W,SrcR1,SrcR2,DstR] = resolve_args(Args),
+ {arithbif,'band',W,[SrcR1,SrcR2],DstR};
+resolve_inst({int_bor,Args},_,_,_) ->
+ [W,SrcR1,SrcR2,DstR] = resolve_args(Args),
+ {arithbif,'bor',W,[SrcR1,SrcR2],DstR};
+resolve_inst({int_bxor,Args},_,_,_) ->
+ [W,SrcR1,SrcR2,DstR] = resolve_args(Args),
+ {arithbif,'bxor',W,[SrcR1,SrcR2],DstR};
+resolve_inst({int_bsl,Args},_,_,_) ->
+ [W,SrcR1,SrcR2,DstR] = resolve_args(Args),
+ {arithbif,'bsl',W,[SrcR1,SrcR2],DstR};
+resolve_inst({int_bsr,Args},_,_,_) ->
+ [W,SrcR1,SrcR2,DstR] = resolve_args(Args),
+ {arithbif,'bsr',W,[SrcR1,SrcR2],DstR};
+resolve_inst({int_bnot,Args},_,_,_) ->
+ [W,SrcR,DstR] = resolve_args(Args),
+ {arithbif,'bnot',W,[SrcR],DstR};
+resolve_inst({is_lt=I,Args0},_,_,_) ->
+ [L|Args] = resolve_args(Args0),
+ {test,I,L,Args};
+resolve_inst({is_ge=I,Args0},_,_,_) ->
+ [L|Args] = resolve_args(Args0),
+ {test,I,L,Args};
+resolve_inst({is_eq=I,Args0},_,_,_) ->
+ [L|Args] = resolve_args(Args0),
+ {test,I,L,Args};
+resolve_inst({is_ne=I,Args0},_,_,_) ->
+ [L|Args] = resolve_args(Args0),
+ {test,I,L,Args};
+resolve_inst({is_eq_exact=I,Args0},_,_,_) ->
+ [L|Args] = resolve_args(Args0),
+ {test,I,L,Args};
+resolve_inst({is_ne_exact=I,Args0},_,_,_) ->
+ [L|Args] = resolve_args(Args0),
+ {test,I,L,Args};
+resolve_inst({is_integer=I,Args0},_,_,_) ->
+ [L|Args] = resolve_args(Args0),
+ {test,I,L,Args};
+resolve_inst({is_float=I,Args0},_,_,_) ->
+ [L|Args] = resolve_args(Args0),
+ {test,I,L,Args};
+resolve_inst({is_number=I,Args0},_,_,_) ->
+ [L|Args] = resolve_args(Args0),
+ {test,I,L,Args};
+resolve_inst({is_atom=I,Args0},_,_,_) ->
+ [L|Args] = resolve_args(Args0),
+ {test,I,L,Args};
+resolve_inst({is_pid=I,Args0},_,_,_) ->
+ [L|Args] = resolve_args(Args0),
+ {test,I,L,Args};
+resolve_inst({is_reference=I,Args0},_,_,_) ->
+ [L|Args] = resolve_args(Args0),
+ {test,I,L,Args};
+resolve_inst({is_port=I,Args0},_,_,_) ->
+ [L|Args] = resolve_args(Args0),
+ {test,I,L,Args};
+resolve_inst({is_nil=I,Args0},_,_,_) ->
+ [L|Args] = resolve_args(Args0),
+ {test,I,L,Args};
+resolve_inst({is_binary=I,Args0},_,_,_) ->
+ [L|Args] = resolve_args(Args0),
+ {test,I,L,Args};
+resolve_inst({is_constant=I,Args0},_,_,_) ->
+ [L|Args] = resolve_args(Args0),
+ {test,I,L,Args};
+resolve_inst({is_list=I,Args0},_,_,_) ->
+ [L|Args] = resolve_args(Args0),
+ {test,I,L,Args};
+resolve_inst({is_nonempty_list=I,Args0},_,_,_) ->
+ [L|Args] = resolve_args(Args0),
+ {test,I,L,Args};
+resolve_inst({is_tuple=I,Args0},_,_,_) ->
+ [L|Args] = resolve_args(Args0),
+ {test,I,L,Args};
+resolve_inst({test_arity=I,Args0},_,_,_) ->
+ [L|Args] = resolve_args(Args0),
+ {test,I,L,Args};
+resolve_inst({select_val,Args},_,_,_) ->
+ [Reg,FLbl,{{z,1},{u,_Len},List0}] = Args,
+ List = resolve_args(List0),
+ {select_val,Reg,FLbl,{list,List}};
+resolve_inst({select_tuple_arity,Args},_,_,_) ->
+ [Reg,FLbl,{{z,1},{u,_Len},List0}] = Args,
+ List = resolve_args(List0),
+ {select_tuple_arity,Reg,FLbl,{list,List}};
+resolve_inst({jump,[Lbl]},_,_,_) ->
+ {jump,Lbl};
+resolve_inst({'catch',[Dst,Lbl]},_,_,_) ->
+ {'catch',Dst,Lbl};
+resolve_inst({catch_end,[Dst]},_,_,_) ->
+ {catch_end,Dst};
+resolve_inst({move,[Src,Dst]},_,_,_) ->
+ {move,resolve_arg(Src),Dst};
+resolve_inst({get_list,[Src,Dst1,Dst2]},_,_,_) ->
+ {get_list,Src,Dst1,Dst2};
+resolve_inst({get_tuple_element,[Src,{u,Off},Dst]},_,_,_) ->
+ {get_tuple_element,resolve_arg(Src),Off,resolve_arg(Dst)};
+resolve_inst({set_tuple_element,[Src,Dst,{u,Off}]},_,_,_) ->
+ {set_tuple_element,resolve_arg(Src),resolve_arg(Dst),Off};
+resolve_inst({put_string,[{u,Len},{u,Off},Dst]},_,Strings,_) ->
+ String = if Len > 0 -> binary_to_list(Strings, Off+1, Off+Len);
+ true -> ""
+ end,
+?NO_DEBUG('put_string(~p, {string,~p}, ~p)~n',[Len,String,Dst]),
+ {put_string,Len,{string,String},Dst};
+resolve_inst({put_list,[Src1,Src2,Dst]},_,_,_) ->
+ {put_list,resolve_arg(Src1),resolve_arg(Src2),Dst};
+resolve_inst({put_tuple,[{u,Arity},Dst]},_,_,_) ->
+ {put_tuple,Arity,Dst};
+resolve_inst({put,[Src]},_,_,_) ->
+ {put,resolve_arg(Src)};
+resolve_inst({badmatch,[X]},_,_,_) ->
+ {badmatch,resolve_arg(X)};
+resolve_inst({if_end,[]},_,_,_) ->
+ if_end;
+resolve_inst({case_end,[X]},_,_,_) ->
+ {case_end,resolve_arg(X)};
+resolve_inst({call_fun,[{u,N}]},_,_,_) ->
+ {call_fun,N};
+resolve_inst({make_fun,Args},_,_,Lbls) ->
+ [{f,L},Magic,FreeVars] = resolve_args(Args),
+ {make_fun,catch lookup_key(L,Lbls),Magic,FreeVars};
+resolve_inst({is_function=I,Args0},_,_,_) ->
+ [L|Args] = resolve_args(Args0),
+ {test,I,L,Args};
+resolve_inst({call_ext_only,[{u,N},{u,MFAix}]},Imports,_,_) ->
+ {call_ext_only,N,catch lists:nth(MFAix+1,Imports)};
+%%
+%% Instructions for handling binaries added in R7A & R7B
+%%
+resolve_inst({bs_start_match,[F,Reg]},_,_,_) ->
+ {bs_start_match,F,Reg};
+resolve_inst({bs_get_integer=I,[Lbl,Arg2,{u,N},{u,U},Arg5]},_,_,_) ->
+ [A2,A5] = resolve_args([Arg2,Arg5]),
+ {test,I,Lbl,[A2,N,decode_field_flags(U),A5]};
+resolve_inst({bs_get_float=I,[Lbl,Arg2,{u,N},{u,U},Arg5]},_,_,_) ->
+ [A2,A5] = resolve_args([Arg2,Arg5]),
+ {test,I,Lbl,[A2,N,decode_field_flags(U),A5]};
+resolve_inst({bs_get_binary=I,[Lbl,Arg2,{u,N},{u,U},Arg5]},_,_,_) ->
+ [A2,A5] = resolve_args([Arg2,Arg5]),
+ {test,I,Lbl,[A2,N,decode_field_flags(U),A5]};
+resolve_inst({bs_skip_bits,[Lbl,Arg2,{u,N},{u,U}]},_,_,_) ->
+ [A2] = resolve_args([Arg2]),
+ {test,bs_skip_bits,Lbl,[A2,N,decode_field_flags(U)]};
+resolve_inst({bs_test_tail,[F,{u,N}]},_,_,_) ->
+ {test,bs_test_tail,F,[N]};
+resolve_inst({bs_save,[{u,N}]},_,_,_) ->
+ {bs_save,N};
+resolve_inst({bs_restore,[{u,N}]},_,_,_) ->
+ {bs_restore,N};
+resolve_inst({bs_init,[{u,N},{u,U}]},_,_,_) ->
+ {bs_init,N,decode_field_flags(U)};
+resolve_inst({bs_final,[F,X]},_,_,_) ->
+ {bs_final,F,X};
+resolve_inst({bs_put_integer,[Lbl,Arg2,{u,N},{u,U},Arg5]},_,_,_) ->
+ [A2,A5] = resolve_args([Arg2,Arg5]),
+ {bs_put_integer,Lbl,A2,N,decode_field_flags(U),A5};
+resolve_inst({bs_put_binary,[Lbl,Arg2,{u,N},{u,U},Arg5]},_,_,_) ->
+ [A2,A5] = resolve_args([Arg2,Arg5]),
+ ?NO_DEBUG('bs_put_binary(~p,~p,~p,~p,~p})~n',[Lbl,A2,N,U,A5]),
+ {bs_put_binary,Lbl,A2,N,decode_field_flags(U),A5};
+resolve_inst({bs_put_float,[Lbl,Arg2,{u,N},{u,U},Arg5]},_,_,_) ->
+ [A2,A5] = resolve_args([Arg2,Arg5]),
+ ?NO_DEBUG('bs_put_float(~p,~p,~p,~p,~p})~n',[Lbl,A2,N,U,A5]),
+ {bs_put_float,Lbl,A2,N,decode_field_flags(U),A5};
+resolve_inst({bs_put_string,[{u,Len},{u,Off}]},_,Strings,_) ->
+ String = if Len > 0 -> binary_to_list(Strings, Off+1, Off+Len);
+ true -> ""
+ end,
+ ?NO_DEBUG('bs_put_string(~p, {string,~p})~n',[Len,String]),
+ {bs_put_string,Len,{string,String}};
+resolve_inst({bs_need_buf,[{u,N}]},_,_,_) ->
+ {bs_need_buf,N};
+
+%%
+%% Instructions for handling floating point numbers added in June 2001 (R8).
+%%
+resolve_inst({fclearerror,[]},_,_,_) ->
+ fclearerror;
+resolve_inst({fcheckerror,Args},_,_,_) ->
+ [Fail] = resolve_args(Args),
+ {fcheckerror,Fail};
+resolve_inst({fmove,Args},_,_,_) ->
+ [FR,Reg] = resolve_args(Args),
+ {fmove,FR,Reg};
+resolve_inst({fconv,Args},_,_,_) ->
+ [Reg,FR] = resolve_args(Args),
+ {fconv,Reg,FR};
+resolve_inst({fadd=I,Args},_,_,_) ->
+ [F,A1,A2,Reg] = resolve_args(Args),
+ {arithfbif,I,F,[A1,A2],Reg};
+resolve_inst({fsub=I,Args},_,_,_) ->
+ [F,A1,A2,Reg] = resolve_args(Args),
+ {arithfbif,I,F,[A1,A2],Reg};
+resolve_inst({fmul=I,Args},_,_,_) ->
+ [F,A1,A2,Reg] = resolve_args(Args),
+ {arithfbif,I,F,[A1,A2],Reg};
+resolve_inst({fdiv=I,Args},_,_,_) ->
+ [F,A1,A2,Reg] = resolve_args(Args),
+ {arithfbif,I,F,[A1,A2],Reg};
+resolve_inst({fnegate,Args},_,_,_) ->
+ [F,Arg,Reg] = resolve_args(Args),
+ {arithfbif,fnegate,F,[Arg],Reg};
+
+%%
+%% Instructions for try expressions added in January 2003 (R10).
+%%
+
+resolve_inst({'try',[Reg,Lbl]},_,_,_) -> % analogous to 'catch'
+ {'try',Reg,Lbl};
+resolve_inst({try_end,[Reg]},_,_,_) -> % analogous to 'catch_end'
+ {try_end,Reg};
+resolve_inst({try_case,[Reg]},_,_,_) -> % analogous to 'catch_end'
+ {try_case,Reg};
+resolve_inst({try_case_end,[Reg]},_,_,_) ->
+ {try_case_end,Reg};
+resolve_inst({raise,[Reg1,Reg2]},_,_,_) ->
+ {bif,raise,{f,0},[Reg1,Reg2],{x,0}};
+
+%%
+%% New bit syntax instructions added in February 2004 (R10B).
+%%
+
+resolve_inst({bs_init2,[Lbl,Arg2,{u,W},{u,R},{u,F},Arg6]},_,_,_) ->
+ [A2,A6] = resolve_args([Arg2,Arg6]),
+ {bs_init2,Lbl,A2,W,R,decode_field_flags(F),A6};
+resolve_inst({bs_bits_to_bytes,[Lbl,Arg2,Arg3]},_,_,_) ->
+ [A2,A3] = resolve_args([Arg2,Arg3]),
+ {bs_bits_to_bytes,Lbl,A2,A3};
+resolve_inst({bs_add=I,[Lbl,Arg2,Arg3,Arg4,Arg5]},_,_,_) ->
+ [A2,A3,A4,A5] = resolve_args([Arg2,Arg3,Arg4,Arg5]),
+ {I,Lbl,[A2,A3,A4],A5};
+
+%%
+%% New apply instructions added in April 2004 (R10B).
+%%
+resolve_inst({apply,[{u,Arity}]},_,_,_) ->
+ {apply,Arity};
+resolve_inst({apply_last,[{u,Arity},{u,D}]},_,_,_) ->
+ {apply_last,Arity,D};
+
+%%
+%% New test instruction added in April 2004 (R10B).
+%%
+resolve_inst({is_boolean=I,Args0},_,_,_) ->
+ [L|Args] = resolve_args(Args0),
+ {test,I,L,Args};
+
+%%
+%% Catches instructions that are not yet handled.
+%%
+
+resolve_inst(X,_,_,_) -> ?exit({resolve_inst,X}).
+
+%%-----------------------------------------------------------------------
+%% Resolves arguments in a generic way.
+%%-----------------------------------------------------------------------
+
+resolve_args(Args) -> [resolve_arg(A) || A <- Args].
+
+resolve_arg({u,N}) -> N;
+resolve_arg({i,N}) -> {integer,N};
+resolve_arg({atom,Atom}=A) when is_atom(Atom) -> A;
+resolve_arg(nil) -> nil;
+resolve_arg(Arg) -> Arg.
+
+%%-----------------------------------------------------------------------
+%% The purpose of the following is just to add a hook for future changes.
+%% Currently, field flags are numbers 1-2-4-8 and only two of these
+%% numbers (BSF_LITTLE 2 -- BSF_SIGNED 4) have a semantic significance;
+%% others are just hints for speeding up the execution; see "erl_bits.h".
+%%-----------------------------------------------------------------------
+
+decode_field_flags(FF) ->
+ {field_flags,FF}.
+
+%%-----------------------------------------------------------------------
+%% Each string is denoted in the assembled code by its offset into this
+%% binary. This binary contains all strings concatenated together.
+%%-----------------------------------------------------------------------
+
+beam_disasm_strings(Bin) ->
+ Bin.
+
+%%-----------------------------------------------------------------------
+%% Disassembles the attributes of a BEAM file.
+%%-----------------------------------------------------------------------
+
+beam_disasm_attributes(none) -> none;
+beam_disasm_attributes(AttrBin) -> binary_to_term(AttrBin).
+
+%%-----------------------------------------------------------------------
+%% Disassembles the compilation information of a BEAM file.
+%%-----------------------------------------------------------------------
+
+beam_disasm_compilation_info(none) -> none;
+beam_disasm_compilation_info(Bin) -> binary_to_term(Bin).
+
+%%-----------------------------------------------------------------------
+%% Private Utilities
+%%-----------------------------------------------------------------------
+
+%%-----------------------------------------------------------------------
+
+lookup_key(Key,[{Key,Val}|_]) ->
+ Val;
+lookup_key(Key,[_|KVs]) ->
+ lookup_key(Key,KVs);
+lookup_key(Key,[]) ->
+ ?exit({lookup_key,{key_not_found,Key}}).
+
+%%-----------------------------------------------------------------------
diff --git a/lib/dialyzer/test/options1_tests_SUITE_data/src/compiler/beam_flatten.erl b/lib/dialyzer/test/options1_tests_SUITE_data/src/compiler/beam_flatten.erl
new file mode 100644
index 0000000000..a9958f87cd
--- /dev/null
+++ b/lib/dialyzer/test/options1_tests_SUITE_data/src/compiler/beam_flatten.erl
@@ -0,0 +1,137 @@
+%% ``The contents of this file are subject to the Erlang Public License,
+%% Version 1.1, (the "License"); you may not use this file except in
+%% compliance with the License. You should have received a copy of the
+%% Erlang Public License along with this software. If not, it can be
+%% retrieved via the world wide web at http://www.erlang.org/.
+%%
+%% Software distributed under the License is distributed on an "AS IS"
+%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
+%% the License for the specific language governing rights and limitations
+%% under the License.
+%%
+%% The Initial Developer of the Original Code is Ericsson Utvecklings AB.
+%% Portions created by Ericsson are Copyright 1999, Ericsson Utvecklings
+%% AB. All Rights Reserved.''
+%%
+%% $Id: beam_flatten.erl,v 1.1 2008/12/17 09:53:41 mikpe Exp $
+%%
+%% Purpose : Converts intermediate assembly code to final format.
+
+-module(beam_flatten).
+
+-export([module/2]).
+-import(lists, [reverse/1,reverse/2,map/2]).
+
+module({Mod,Exp,Attr,Fs,Lc}, _Opt) ->
+ {ok,{Mod,Exp,Attr,map(fun function/1, Fs),Lc}}.
+
+function({function,Name,Arity,CLabel,Is0}) ->
+ Is1 = block(Is0),
+ Is = opt(Is1),
+ {function,Name,Arity,CLabel,Is}.
+
+block(Is) ->
+ block(Is, []).
+
+block([{block,Is0}|Is1], Acc) -> block(Is1, norm_block(Is0, Acc));
+block([I|Is], Acc) -> block(Is, [I|Acc]);
+block([], Acc) -> reverse(Acc).
+
+norm_block([{allocate,R,Alloc}|Is], Acc0) ->
+ case insert_alloc_in_bs_init(Acc0, Alloc) of
+ not_possible ->
+ norm_block(Is, reverse(norm_allocate(Alloc, R), Acc0));
+ Acc ->
+ norm_block(Is, Acc)
+ end;
+norm_block([I|Is], Acc) -> norm_block(Is, [norm(I)|Acc]);
+norm_block([], Acc) -> Acc.
+
+norm({set,[D],As,{bif,N}}) -> {bif,N,nofail,As,D};
+norm({set,[D],As,{bif,N,F}}) -> {bif,N,F,As,D};
+norm({set,[D],[S],move}) -> {move,S,D};
+norm({set,[D],[S],fmove}) -> {fmove,S,D};
+norm({set,[D],[S],fconv}) -> {fconv,S,D};
+norm({set,[D],[S1,S2],put_list}) -> {put_list,S1,S2,D};
+norm({set,[D],[],{put_tuple,A}}) -> {put_tuple,A,D};
+norm({set,[],[S],put}) -> {put,S};
+norm({set,[D],[],{put_string,L,S}}) -> {put_string,L,S,D};
+norm({set,[D],[S],{get_tuple_element,I}}) -> {get_tuple_element,S,I,D};
+norm({set,[],[S,D],{set_tuple_element,I}}) -> {set_tuple_element,S,D,I};
+norm({set,[D1,D2],[S],get_list}) -> {get_list,S,D1,D2};
+norm({set,[],[],remove_message}) -> remove_message;
+norm({set,[],[],fclearerror}) -> fclearerror;
+norm({set,[],[],fcheckerror}) -> {fcheckerror,{f,0}};
+norm({'%',_}=Comment) -> Comment;
+norm({'%live',R}) -> {'%live',R}.
+
+norm_allocate({_Zero,nostack,Nh,[]}, Regs) ->
+ [{test_heap,Nh,Regs}];
+norm_allocate({_Zero,nostack,Nh,Nf,[]}, Regs) ->
+ [{test_heap,alloc_list(Nh, Nf),Regs}];
+norm_allocate({zero,0,Nh,[]}, Regs) ->
+ norm_allocate({nozero,0,Nh,[]}, Regs);
+norm_allocate({zero,0,Nh,Nf,[]}, Regs) ->
+ norm_allocate({nozero,0,Nh,Nf,[]}, Regs);
+norm_allocate({zero,Ns,0,[]}, Regs) ->
+ [{allocate_zero,Ns,Regs}];
+norm_allocate({zero,Ns,Nh,[]}, Regs) ->
+ [{allocate_heap_zero,Ns,Nh,Regs}];
+norm_allocate({nozero,Ns,0,Inits}, Regs) ->
+ [{allocate,Ns,Regs}|Inits];
+norm_allocate({nozero,Ns,Nh,Inits}, Regs) ->
+ [{allocate_heap,Ns,Nh,Regs}|Inits];
+norm_allocate({nozero,Ns,Nh,Floats,Inits}, Regs) ->
+ [{allocate_heap,Ns,alloc_list(Nh, Floats),Regs}|Inits];
+norm_allocate({zero,Ns,Nh,Floats,Inits}, Regs) ->
+ [{allocate_heap_zero,Ns,alloc_list(Nh, Floats),Regs}|Inits].
+
+insert_alloc_in_bs_init([I|_]=Is, Alloc) ->
+ case is_bs_put(I) of
+ false ->
+ not_possible;
+ true ->
+ insert_alloc_1(Is, Alloc, [])
+ end.
+
+insert_alloc_1([{bs_init2,Fail,Bs,Ws,Regs,F,Dst}|Is], {_,nostack,Nh,Nf,[]}, Acc) ->
+ Al = alloc_list(Ws+Nh, Nf),
+ I = {bs_init2,Fail,Bs,Al,Regs,F,Dst},
+ reverse(Acc, [I|Is]);
+insert_alloc_1([I|Is], Alloc, Acc) ->
+ insert_alloc_1(Is, Alloc, [I|Acc]).
+
+is_bs_put({bs_put_integer,_,_,_,_,_}) -> true;
+is_bs_put({bs_put_float,_,_,_,_,_}) -> true;
+is_bs_put({bs_put_binary,_,_,_,_,_}) -> true;
+is_bs_put({bs_put_string,_,_}) -> true;
+is_bs_put(_) -> false.
+
+alloc_list(Words, Floats) ->
+ {alloc,[{words,Words},{floats,Floats}]}.
+
+
+%% opt(Is0) -> Is
+%% Simple peep-hole optimization to move a {move,Any,{x,0}} past
+%% any kill up to the next call instruction.
+
+opt(Is) ->
+ opt_1(Is, []).
+
+opt_1([{move,_,{x,0}}=I|Is0], Acc0) ->
+ case move_past_kill(Is0, I, Acc0) of
+ impossible -> opt_1(Is0, [I|Acc0]);
+ {Is,Acc} -> opt_1(Is, Acc)
+ end;
+opt_1([I|Is], Acc) ->
+ opt_1(Is, [I|Acc]);
+opt_1([], Acc) -> reverse(Acc).
+
+move_past_kill([{'%live',_}|Is], Move, Acc) ->
+ move_past_kill(Is, Move, Acc);
+move_past_kill([{kill,Src}|_], {move,Src,_}, _) ->
+ impossible;
+move_past_kill([{kill,_}=I|Is], Move, Acc) ->
+ move_past_kill(Is, Move, [I|Acc]);
+move_past_kill(Is, Move, Acc) ->
+ {Is,[Move|Acc]}.
diff --git a/lib/dialyzer/test/options1_tests_SUITE_data/src/compiler/beam_jump.erl b/lib/dialyzer/test/options1_tests_SUITE_data/src/compiler/beam_jump.erl
new file mode 100644
index 0000000000..fd005898b6
--- /dev/null
+++ b/lib/dialyzer/test/options1_tests_SUITE_data/src/compiler/beam_jump.erl
@@ -0,0 +1,477 @@
+%% ``The contents of this file are subject to the Erlang Public License,
+%% Version 1.1, (the "License"); you may not use this file except in
+%% compliance with the License. You should have received a copy of the
+%% Erlang Public License along with this software. If not, it can be
+%% retrieved via the world wide web at http://www.erlang.org/.
+%%
+%% Software distributed under the License is distributed on an "AS IS"
+%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
+%% the License for the specific language governing rights and limitations
+%% under the License.
+%%
+%% The Initial Developer of the Original Code is Ericsson Utvecklings AB.
+%% Portions created by Ericsson are Copyright 1999, Ericsson Utvecklings
+%% AB. All Rights Reserved.''
+%%
+%% $Id: beam_jump.erl,v 1.1 2008/12/17 09:53:41 mikpe Exp $
+%%
+%%% Purpose : Optimise jumps and remove unreachable code.
+
+-module(beam_jump).
+
+-export([module/2,module_labels/1,
+ is_unreachable_after/1,remove_unused_labels/1]).
+
+%%% The following optimisations are done:
+%%%
+%%% (1) This code with two identical instruction sequences
+%%%
+%%% L1: <Instruction sequence>
+%%% L2:
+%%% . . .
+%%% L3: <Instruction sequence>
+%%% L4:
+%%%
+%%% can be replaced with
+%%%
+%%% L1: jump L3
+%%% L2:
+%%% . . .
+%%% L3: <Instruction sequence>
+%%% L4
+%%%
+%%% Note: The instruction sequence must end with an instruction
+%%% such as a jump that never transfers control to the instruction
+%%% following it.
+%%%
+%%% (2) case_end, if_end, and badmatch, and function calls that cause an
+%%% exit (such as calls to exit/1) are moved to the end of the function.
+%%% The purpose is to allow further optimizations at the place from
+%%% which the code was moved.
+%%%
+%%% (3) Any unreachable code is removed. Unreachable code is code after
+%%% jump, call_last and other instructions which never transfer control
+%%% to the following instruction. Code is unreachable up to the next
+%%% *referenced* label. Note that the optimisations below might
+%%% generate more possibilities for removing unreachable code.
+%%%
+%%% (4) This code:
+%%% L1: jump L2
+%%% . . .
+%%% L2: ...
+%%%
+%%% will be changed to
+%%%
+%%% jump L2
+%%% . . .
+%%% L1:
+%%% L2: ...
+%%%
+%%% If the jump is unreachable, it will be removed according to (1).
+%%%
+%%% (5) In
+%%%
+%%% jump L1
+%%% L1:
+%%%
+%%% the jump will be removed.
+%%%
+%%% (6) If test instructions are used to skip a single jump instruction,
+%%% the test is inverted and the jump is eliminated (provided that
+%%% the test can be inverted). Example:
+%%%
+%%% is_eq L1 {x,1} {x,2}
+%%% jump L2
+%%% L1:
+%%%
+%%% will be changed to
+%%%
+%%% is_ne L2 {x,1} {x,2}
+%%%
+%%% (The label L1 will be retained if there were previous references to it.)
+%%%
+%%% (7) Some redundant uses of is_boolean/1 is optimized away.
+%%%
+%%% Terminology note: The optimisation done here is called unreachable-code
+%%% elimination, NOT dead-code elimination. Dead code elimination
+%%% means the removal of instructions that are executed, but have no visible
+%%% effect on the program state.
+%%%
+
+-import(lists, [reverse/1,reverse/2,map/2,mapfoldl/3,foldl/3,
+ last/1,foreach/2,member/2]).
+
+module({Mod,Exp,Attr,Fs0,Lc}, _Opt) ->
+ Fs = map(fun function/1, Fs0),
+ {ok,{Mod,Exp,Attr,Fs,Lc}}.
+
+module_labels({Mod,Exp,Attr,Fs,Lc}) ->
+ {Mod,Exp,Attr,map(fun function_labels/1, Fs),Lc}.
+
+function_labels({function,Name,Arity,CLabel,Asm0}) ->
+ Asm = remove_unused_labels(Asm0),
+ {function,Name,Arity,CLabel,Asm}.
+
+function({function,Name,Arity,CLabel,Asm0}) ->
+ Asm1 = share(Asm0),
+ Asm2 = bopt(Asm1),
+ Asm3 = move(Asm2),
+ Asm4 = opt(Asm3, CLabel),
+ Asm = remove_unused_labels(Asm4),
+ {function,Name,Arity,CLabel,Asm}.
+
+%%%
+%%% (1) We try to share the code for identical code segments by replacing all
+%%% occurrences except the last with jumps to the last occurrence.
+%%%
+
+share(Is) ->
+ share_1(reverse(Is), gb_trees:empty(), [], []).
+
+share_1([{label,_}=Lbl|Is], Dict, [], Acc) ->
+ share_1(Is, Dict, [], [Lbl|Acc]);
+share_1([{label,L}=Lbl|Is], Dict0, Seq, Acc) ->
+ case is_unreachable_after(last(Seq)) of
+ false ->
+ share_1(Is, Dict0, [], [Lbl|Seq ++ Acc]);
+ true ->
+ case gb_trees:lookup(Seq, Dict0) of
+ none ->
+ Dict = gb_trees:insert(Seq, L, Dict0),
+ share_1(Is, Dict, [], [Lbl|Seq ++ Acc]);
+ {value,Label} ->
+ share_1(Is, Dict0, [], [Lbl,{jump,{f,Label}}|Acc])
+ end
+ end;
+share_1([{func_info,_,_,_}=I|Is], _, [], Acc) ->
+ Is++[I|Acc];
+share_1([I|Is], Dict, Seq, Acc) ->
+ case is_unreachable_after(I) of
+ false ->
+ share_1(Is, Dict, [I|Seq], Acc);
+ true ->
+ share_1(Is, Dict, [I], Acc)
+ end.
+
+%%%
+%%% (2) Move short code sequences ending in an instruction that causes an exit
+%%% to the end of the function.
+%%%
+
+move(Is) ->
+ move_1(Is, [], []).
+
+move_1([I|Is], End, Acc) ->
+ case is_exit_instruction(I) of
+ false -> move_1(Is, End, [I|Acc]);
+ true -> move_2(I, Is, End, Acc)
+ end;
+move_1([], End, Acc) ->
+ reverse(Acc, reverse(End)).
+
+move_2(Exit, Is, End, [{block,_},{label,_},{func_info,_,_,_}|_]=Acc) ->
+ move_1(Is, End, [Exit|Acc]);
+move_2(Exit, Is, End, [{kill,_Y}|Acc]) ->
+ move_2(Exit, Is, End, Acc);
+move_2(Exit, Is, End, [{block,_}=Blk,{label,_}=Lbl,Dead|More]=Acc) ->
+ case is_unreachable_after(Dead) of
+ false ->
+ move_1(Is, End, [Exit|Acc]);
+ true ->
+ move_1([Dead|Is], [Exit,Blk,Lbl|End], More)
+ end;
+move_2(Exit, Is, End, [{label,_}=Lbl,Dead|More]=Acc) ->
+ case is_unreachable_after(Dead) of
+ false ->
+ move_1(Is, End, [Exit|Acc]);
+ true ->
+ move_1([Dead|Is], [Exit,Lbl|End], More)
+ end;
+move_2(Exit, Is, End, Acc) ->
+ move_1(Is, End, [Exit|Acc]).
+
+%%%
+%%% (7) Remove redundant is_boolean tests.
+%%%
+
+bopt(Is) ->
+ bopt_1(Is, []).
+
+bopt_1([{test,is_boolean,_,_}=I|Is], Acc0) ->
+ case opt_is_bool(I, Acc0) of
+ no -> bopt_1(Is, [I|Acc0]);
+ yes -> bopt_1(Is, Acc0);
+ {yes,Acc} -> bopt_1(Is, Acc)
+ end;
+bopt_1([I|Is], Acc) -> bopt_1(Is, [I|Acc]);
+bopt_1([], Acc) -> reverse(Acc).
+
+opt_is_bool({test,is_boolean,{f,Lbl},[Reg]}, Acc) ->
+ opt_is_bool_1(Acc, Reg, Lbl).
+
+opt_is_bool_1([{test,is_eq_exact,{f,Lbl},[Reg,{atom,true}]}|_], Reg, Lbl) ->
+ %% Instruction not needed in this context.
+ yes;
+opt_is_bool_1([{test,is_ne_exact,{f,Lbl},[Reg,{atom,true}]}|Acc], Reg, Lbl) ->
+ %% Rewrite to shorter test.
+ {yes,[{test,is_eq_exact,{f,Lbl},[Reg,{atom,false}]}|Acc]};
+opt_is_bool_1([{test,_,{f,Lbl},_}=Test|Acc0], Reg, Lbl) ->
+ case opt_is_bool_1(Acc0, Reg, Lbl) of
+ {yes,Acc} -> {yes,[Test|Acc]};
+ Other -> Other
+ end;
+opt_is_bool_1(_, _, _) -> no.
+
+%%%
+%%% (3) (4) (5) (6) Jump and unreachable code optimizations.
+%%%
+
+-record(st, {fc, %Label for function class errors.
+ entry, %Entry label (must not be moved).
+ mlbl, %Moved labels.
+ labels %Set of referenced labels.
+ }).
+
+opt([{label,Fc}|_]=Is, CLabel) ->
+ Lbls = initial_labels(Is),
+ St = #st{fc=Fc,entry=CLabel,mlbl=dict:new(),labels=Lbls},
+ opt(Is, [], St).
+
+opt([{test,Test0,{f,Lnum}=Lbl,Ops}=I|Is0], Acc, St) ->
+ case Is0 of
+ [{jump,To}|[{label,Lnum}|Is2]=Is1] ->
+ case invert_test(Test0) of
+ not_possible ->
+ opt(Is0, [I|Acc], label_used(Lbl, St));
+ Test ->
+ Is = case is_label_used(Lnum, St) of
+ true -> Is1;
+ false -> Is2
+ end,
+ opt([{test,Test,To,Ops}|Is], Acc, label_used(To, St))
+ end;
+ _Other ->
+ opt(Is0, [I|Acc], label_used(Lbl, St))
+ end;
+opt([{select_val,_R,Fail,{list,Vls}}=I|Is], Acc, St) ->
+ skip_unreachable(Is, [I|Acc], label_used([Fail|Vls], St));
+opt([{select_tuple_arity,_R,Fail,{list,Vls}}=I|Is], Acc, St) ->
+ skip_unreachable(Is, [I|Acc], label_used([Fail|Vls], St));
+opt([{'try',_R,Lbl}=I|Is], Acc, St) ->
+ opt(Is, [I|Acc], label_used(Lbl, St));
+opt([{'catch',_R,Lbl}=I|Is], Acc, St) ->
+ opt(Is, [I|Acc], label_used(Lbl, St));
+opt([{label,L}=I|Is], Acc, #st{entry=L}=St) ->
+ %% NEVER move the entry label.
+ opt(Is, [I|Acc], St);
+opt([{label,L1},{jump,{f,L2}}=I|Is], [Prev|Acc], St0) ->
+ St = St0#st{mlbl=dict:append(L2, L1, St0#st.mlbl)},
+ opt([Prev,I|Is], Acc, label_used({f,L2}, St));
+opt([{label,Lbl}=I|Is], Acc, #st{mlbl=Mlbl}=St0) ->
+ case dict:find(Lbl, Mlbl) of
+ {ok,Lbls} ->
+ %% Essential to remove the list of labels from the dictionary,
+ %% since we will rescan the inserted labels. We MUST rescan.
+ St = St0#st{mlbl=dict:erase(Lbl, Mlbl)},
+ insert_labels([Lbl|Lbls], Is, Acc, St);
+ error -> opt(Is, [I|Acc], St0)
+ end;
+opt([{jump,{f,Lbl}},{label,Lbl}=I|Is], Acc, St) ->
+ opt([I|Is], Acc, St);
+opt([{jump,Lbl}=I|Is], Acc, St) ->
+ skip_unreachable(Is, [I|Acc], label_used(Lbl, St));
+opt([{loop_rec,Lbl,_R}=I|Is], Acc, St) ->
+ opt(Is, [I|Acc], label_used(Lbl, St));
+opt([{bif,_Name,Lbl,_As,_R}=I|Is], Acc, St) ->
+ opt(Is, [I|Acc], label_used(Lbl, St));
+opt([{bs_put_integer,Lbl,_Bits,_Unit,_Fl,_Val}=I|Is], Acc, St) ->
+ opt(Is, [I|Acc], label_used(Lbl, St));
+opt([{bs_put_binary,Lbl,_Bits,_Unit,_Fl,_Val}=I|Is], Acc, St) ->
+ opt(Is, [I|Acc], label_used(Lbl, St));
+opt([{bs_put_float,Lbl,_Bits,_Unit,_Fl,_Val}=I|Is], Acc, St) ->
+ opt(Is, [I|Acc], label_used(Lbl, St));
+opt([{bs_final,Lbl,_R}=I|Is], Acc, St) ->
+ opt(Is, [I|Acc], label_used(Lbl, St));
+opt([{bs_init2,Lbl,_,_,_,_,_}=I|Is], Acc, St) ->
+ opt(Is, [I|Acc], label_used(Lbl, St));
+opt([{bs_add,Lbl,_,_}=I|Is], Acc, St) ->
+ opt(Is, [I|Acc], label_used(Lbl, St));
+opt([{bs_bits_to_bytes,Lbl,_,_}=I|Is], Acc, St) ->
+ opt(Is, [I|Acc], label_used(Lbl, St));
+opt([I|Is], Acc, St) ->
+ case is_unreachable_after(I) of
+ true -> skip_unreachable(Is, [I|Acc], St);
+ false -> opt(Is, [I|Acc], St)
+ end;
+opt([], Acc, #st{fc=Fc,mlbl=Mlbl}) ->
+ Code = reverse(Acc),
+ case dict:find(Fc, Mlbl) of
+ {ok,Lbls} -> insert_fc_labels(Lbls, Mlbl, Code);
+ error -> Code
+ end.
+
+insert_fc_labels([L|Ls], Mlbl, Acc0) ->
+ Acc = [{label,L}|Acc0],
+ case dict:find(L, Mlbl) of
+ error ->
+ insert_fc_labels(Ls, Mlbl, Acc);
+ {ok,Lbls} ->
+ insert_fc_labels(Lbls++Ls, Mlbl, Acc)
+ end;
+insert_fc_labels([], _, Acc) -> Acc.
+
+%% invert_test(Test0) -> not_possible | Test
+
+invert_test(is_ge) -> is_lt;
+invert_test(is_lt) -> is_ge;
+invert_test(is_eq) -> is_ne;
+invert_test(is_ne) -> is_eq;
+invert_test(is_eq_exact) -> is_ne_exact;
+invert_test(is_ne_exact) -> is_eq_exact;
+invert_test(_) -> not_possible.
+
+insert_labels([L|Ls], Is, [{jump,{f,L}}|Acc], St) ->
+ insert_labels(Ls, [{label,L}|Is], Acc, St);
+insert_labels([L|Ls], Is, Acc, St) ->
+ insert_labels(Ls, [{label,L}|Is], Acc, St);
+insert_labels([], Is, Acc, St) ->
+ opt(Is, Acc, St).
+
+%% Skip unreachable code up to the next referenced label.
+
+skip_unreachable([{label,L}|Is], [{jump,{f,L}}|Acc], St) ->
+ opt([{label,L}|Is], Acc, St);
+skip_unreachable([{label,L}|Is], Acc, St) ->
+ case is_label_used(L, St) of
+ true -> opt([{label,L}|Is], Acc, St);
+ false -> skip_unreachable(Is, Acc, St)
+ end;
+skip_unreachable([_|Is], Acc, St) ->
+ skip_unreachable(Is, Acc, St);
+skip_unreachable([], Acc, St) ->
+ opt([], Acc, St).
+
+%% Add one or more label to the set of used labels.
+
+label_used({f,0}, St) -> St;
+label_used({f,L}, St) -> St#st{labels=gb_sets:add(L, St#st.labels)};
+label_used([H|T], St0) -> label_used(T, label_used(H, St0));
+label_used([], St) -> St;
+label_used(_Other, St) -> St.
+
+%% Test if label is used.
+
+is_label_used(L, St) ->
+ gb_sets:is_member(L, St#st.labels).
+
+%% is_unreachable_after(Instruction) -> true|false
+%% Test whether the code after Instruction is unreachable.
+
+is_unreachable_after({func_info,_M,_F,_A}) -> true;
+is_unreachable_after(return) -> true;
+is_unreachable_after({call_ext_last,_Ar,_ExtFunc,_D}) -> true;
+is_unreachable_after({call_ext_only,_Ar,_ExtFunc}) -> true;
+is_unreachable_after({call_last,_Ar,_Lbl,_D}) -> true;
+is_unreachable_after({call_only,_Ar,_Lbl}) -> true;
+is_unreachable_after({apply_last,_Ar,_N}) -> true;
+is_unreachable_after({jump,_Lbl}) -> true;
+is_unreachable_after({select_val,_R,_Lbl,_Cases}) -> true;
+is_unreachable_after({select_tuple_arity,_R,_Lbl,_Cases}) -> true;
+is_unreachable_after({loop_rec_end,_}) -> true;
+is_unreachable_after({wait,_}) -> true;
+is_unreachable_after(I) -> is_exit_instruction(I).
+
+%% is_exit_instruction(Instruction) -> true|false
+%% Test whether the instruction Instruction always
+%% causes an exit/failure.
+
+is_exit_instruction({call_ext,_,{extfunc,M,F,A}}) ->
+ is_exit_instruction_1(M, F, A);
+is_exit_instruction({call_ext_last,_,{extfunc,M,F,A},_}) ->
+ is_exit_instruction_1(M, F, A);
+is_exit_instruction({call_ext_only,_,{extfunc,M,F,A}}) ->
+ is_exit_instruction_1(M, F, A);
+is_exit_instruction(if_end) -> true;
+is_exit_instruction({case_end,_}) -> true;
+is_exit_instruction({try_case_end,_}) -> true;
+is_exit_instruction({badmatch,_}) -> true;
+is_exit_instruction(_) -> false.
+
+is_exit_instruction_1(erlang, exit, 1) -> true;
+is_exit_instruction_1(erlang, throw, 1) -> true;
+is_exit_instruction_1(erlang, error, 1) -> true;
+is_exit_instruction_1(erlang, error, 2) -> true;
+is_exit_instruction_1(erlang, fault, 1) -> true;
+is_exit_instruction_1(erlang, fault, 2) -> true;
+is_exit_instruction_1(_, _, _) -> false.
+
+%% remove_unused_labels(Instructions0) -> Instructions
+%% Remove all unused labels.
+
+remove_unused_labels(Is) ->
+ Used0 = initial_labels(Is),
+ Used = foldl(fun ulbl/2, Used0, Is),
+ rem_unused(Is, Used, []).
+
+rem_unused([{label,Lbl}=I|Is], Used, Acc) ->
+ case gb_sets:is_member(Lbl, Used) of
+ false -> rem_unused(Is, Used, Acc);
+ true -> rem_unused(Is, Used, [I|Acc])
+ end;
+rem_unused([I|Is], Used, Acc) ->
+ rem_unused(Is, Used, [I|Acc]);
+rem_unused([], _, Acc) -> reverse(Acc).
+
+initial_labels(Is) ->
+ initial_labels(Is, []).
+
+initial_labels([{label,Lbl}|Is], Acc) ->
+ initial_labels(Is, [Lbl|Acc]);
+initial_labels([{func_info,_,_,_},{label,Lbl}|_], Acc) ->
+ gb_sets:from_list([Lbl|Acc]).
+
+ulbl({test,_,Fail,_}, Used) ->
+ mark_used(Fail, Used);
+ulbl({select_val,_,Fail,{list,Vls}}, Used) ->
+ mark_used_list(Vls, mark_used(Fail, Used));
+ulbl({select_tuple_arity,_,Fail,{list,Vls}}, Used) ->
+ mark_used_list(Vls, mark_used(Fail, Used));
+ulbl({'try',_,Lbl}, Used) ->
+ mark_used(Lbl, Used);
+ulbl({'catch',_,Lbl}, Used) ->
+ mark_used(Lbl, Used);
+ulbl({jump,Lbl}, Used) ->
+ mark_used(Lbl, Used);
+ulbl({loop_rec,Lbl,_}, Used) ->
+ mark_used(Lbl, Used);
+ulbl({loop_rec_end,Lbl}, Used) ->
+ mark_used(Lbl, Used);
+ulbl({wait,Lbl}, Used) ->
+ mark_used(Lbl, Used);
+ulbl({wait_timeout,Lbl,_To}, Used) ->
+ mark_used(Lbl, Used);
+ulbl({bif,_Name,Lbl,_As,_R}, Used) ->
+ mark_used(Lbl, Used);
+ulbl({bs_init2,Lbl,_,_,_,_,_}, Used) ->
+ mark_used(Lbl, Used);
+ulbl({bs_put_integer,Lbl,_Bits,_Unit,_Fl,_Val}, Used) ->
+ mark_used(Lbl, Used);
+ulbl({bs_put_float,Lbl,_Bits,_Unit,_Fl,_Val}, Used) ->
+ mark_used(Lbl, Used);
+ulbl({bs_put_binary,Lbl,_Bits,_Unit,_Fl,_Val}, Used) ->
+ mark_used(Lbl, Used);
+ulbl({bs_final,Lbl,_}, Used) ->
+ mark_used(Lbl, Used);
+ulbl({bs_add,Lbl,_,_}, Used) ->
+ mark_used(Lbl, Used);
+ulbl({bs_bits_to_bytes,Lbl,_,_}, Used) ->
+ mark_used(Lbl, Used);
+ulbl(_, Used) -> Used.
+
+mark_used({f,0}, Used) -> Used;
+mark_used({f,L}, Used) -> gb_sets:add(L, Used);
+mark_used(_, Used) -> Used.
+
+mark_used_list([H|T], Used) ->
+ mark_used_list(T, mark_used(H, Used));
+mark_used_list([], Used) -> Used.
diff --git a/lib/dialyzer/test/options1_tests_SUITE_data/src/compiler/beam_listing.erl b/lib/dialyzer/test/options1_tests_SUITE_data/src/compiler/beam_listing.erl
new file mode 100644
index 0000000000..006b8c551a
--- /dev/null
+++ b/lib/dialyzer/test/options1_tests_SUITE_data/src/compiler/beam_listing.erl
@@ -0,0 +1,117 @@
+%% ``The contents of this file are subject to the Erlang Public License,
+%% Version 1.1, (the "License"); you may not use this file except in
+%% compliance with the License. You should have received a copy of the
+%% Erlang Public License along with this software. If not, it can be
+%% retrieved via the world wide web at http://www.erlang.org/.
+%%
+%% Software distributed under the License is distributed on an "AS IS"
+%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
+%% the License for the specific language governing rights and limitations
+%% under the License.
+%%
+%% The Initial Developer of the Original Code is Ericsson Utvecklings AB.
+%% Portions created by Ericsson are Copyright 1999, Ericsson Utvecklings
+%% AB. All Rights Reserved.''
+%%
+%% $Id: beam_listing.erl,v 1.1 2008/12/17 09:53:41 mikpe Exp $
+%%
+-module(beam_listing).
+
+-export([module/2]).
+
+-include("v3_life.hrl").
+
+-import(lists, [foreach/2]).
+
+module(File, Core) when element(1, Core) == c_module ->
+ %% This is a core module.
+ io:put_chars(File, core_pp:format(Core));
+module(File, Kern) when element(1, Kern) == k_mdef ->
+ %% This is a kernel module.
+ io:put_chars(File, v3_kernel_pp:format(Kern));
+ %%io:put_chars(File, io_lib:format("~p~n", [Kern]));
+module(File, {Mod,Exp,Attr,Kern}) ->
+ %% This is output from beam_life (v3).
+ io:fwrite(File, "~w.~n~p.~n~p.~n", [Mod,Exp,Attr]),
+ foreach(fun (F) -> function(File, F) end, Kern);
+module(Stream, {Mod,Exp,Attr,Code,NumLabels}) ->
+ %% This is output from beam_codegen.
+ io:format(Stream, "{module, ~s}. %% version = ~w\n",
+ [Mod, beam_opcodes:format_number()]),
+ io:format(Stream, "\n{exports, ~p}.\n", [Exp]),
+ io:format(Stream, "\n{attributes, ~p}.\n", [Attr]),
+ io:format(Stream, "\n{labels, ~p}.\n", [NumLabels]),
+ foreach(
+ fun ({function,Name,Arity,Entry,Asm}) ->
+ io:format(Stream, "\n\n{function, ~w, ~w, ~w}.\n",
+ [Name, Arity, Entry]),
+ foreach(fun(Op) -> print_op(Stream, Op) end, Asm) end,
+ Code);
+module(Stream, {Mod,Exp,Inter}) ->
+ %% Other kinds of intermediate formats.
+ io:fwrite(Stream, "~w.~n~p.~n", [Mod,Exp]),
+ foreach(fun (F) -> io:format(Stream, "~p.\n", [F]) end, Inter);
+module(Stream, [_|_]=Fs) ->
+ %% Form-based abstract format.
+ foreach(fun (F) -> io:format(Stream, "~p.\n", [F]) end, Fs).
+
+print_op(Stream, Label) when element(1, Label) == label ->
+ io:format(Stream, " ~p.\n", [Label]);
+print_op(Stream, Op) ->
+ io:format(Stream, " ~p.\n", [Op]).
+
+function(File, {function,Name,Arity,Args,Body,Vdb}) ->
+ io:nl(File),
+ io:format(File, "function ~p/~p.\n", [Name,Arity]),
+ io:format(File, " ~p.\n", [Args]),
+ print_vdb(File, Vdb),
+ put(beam_listing_nl, true),
+ foreach(fun(F) -> format(File, F, []) end, Body),
+ nl(File),
+ erase(beam_listing_nl).
+
+format(File, #l{ke=Ke,i=I,vdb=Vdb}, Ind) ->
+ nl(File),
+ ind_format(File, Ind, "~p ", [I]),
+ print_vdb(File, Vdb),
+ nl(File),
+ format(File, Ke, Ind);
+format(File, Tuple, Ind) when is_tuple(Tuple) ->
+ ind_format(File, Ind, "{", []),
+ format_list(File, tuple_to_list(Tuple), [$\s|Ind]),
+ ind_format(File, Ind, "}", []);
+format(File, List, Ind) when is_list(List) ->
+ ind_format(File, Ind, "[", []),
+ format_list(File, List, [$\s|Ind]),
+ ind_format(File, Ind, "]", []);
+format(File, F, Ind) ->
+ ind_format(File, Ind, "~p", [F]).
+
+format_list(File, [F], Ind) ->
+ format(File, F, Ind);
+format_list(File, [F|Fs], Ind) ->
+ format(File, F, Ind),
+ ind_format(File, Ind, ",", []),
+ format_list(File, Fs, Ind);
+format_list(_, [], _) -> ok.
+
+
+print_vdb(File, [{Var,F,E}|Vs]) ->
+ io:format(File, "~p:~p..~p ", [Var,F,E]),
+ print_vdb(File, Vs);
+print_vdb(_, []) -> ok.
+
+ind_format(File, Ind, Format, Args) ->
+ case get(beam_listing_nl) of
+ true ->
+ put(beam_listing_nl, false),
+ io:put_chars(File, Ind);
+ false -> ok
+ end,
+ io:format(File, Format, Args).
+
+nl(File) ->
+ case put(beam_listing_nl, true) of
+ true -> ok;
+ false -> io:nl(File)
+ end.
diff --git a/lib/dialyzer/test/options1_tests_SUITE_data/src/compiler/beam_opcodes.erl b/lib/dialyzer/test/options1_tests_SUITE_data/src/compiler/beam_opcodes.erl
new file mode 100644
index 0000000000..a4f5fd34d2
--- /dev/null
+++ b/lib/dialyzer/test/options1_tests_SUITE_data/src/compiler/beam_opcodes.erl
@@ -0,0 +1,240 @@
+-module(beam_opcodes).
+%% Warning: Do not edit this file. It was automatically
+%% generated by 'beam_makeops' on Wed Nov 24 17:52:43 2004.
+
+-export([format_number/0]).
+-export([opcode/2,opname/1]).
+
+format_number() -> 0.
+
+opcode(label, 1) -> 1;
+opcode(func_info, 3) -> 2;
+opcode(int_code_end, 0) -> 3;
+opcode(call, 2) -> 4;
+opcode(call_last, 3) -> 5;
+opcode(call_only, 2) -> 6;
+opcode(call_ext, 2) -> 7;
+opcode(call_ext_last, 3) -> 8;
+opcode(bif0, 2) -> 9;
+opcode(bif1, 4) -> 10;
+opcode(bif2, 5) -> 11;
+opcode(allocate, 2) -> 12;
+opcode(allocate_heap, 3) -> 13;
+opcode(allocate_zero, 2) -> 14;
+opcode(allocate_heap_zero, 3) -> 15;
+opcode(test_heap, 2) -> 16;
+opcode(init, 1) -> 17;
+opcode(deallocate, 1) -> 18;
+opcode(return, 0) -> 19;
+opcode(send, 0) -> 20;
+opcode(remove_message, 0) -> 21;
+opcode(timeout, 0) -> 22;
+opcode(loop_rec, 2) -> 23;
+opcode(loop_rec_end, 1) -> 24;
+opcode(wait, 1) -> 25;
+opcode(wait_timeout, 2) -> 26;
+opcode(m_plus, 4) -> 27;
+opcode(m_minus, 4) -> 28;
+opcode(m_times, 4) -> 29;
+opcode(m_div, 4) -> 30;
+opcode(int_div, 4) -> 31;
+opcode(int_rem, 4) -> 32;
+opcode(int_band, 4) -> 33;
+opcode(int_bor, 4) -> 34;
+opcode(int_bxor, 4) -> 35;
+opcode(int_bsl, 4) -> 36;
+opcode(int_bsr, 4) -> 37;
+opcode(int_bnot, 3) -> 38;
+opcode(is_lt, 3) -> 39;
+opcode(is_ge, 3) -> 40;
+opcode(is_eq, 3) -> 41;
+opcode(is_ne, 3) -> 42;
+opcode(is_eq_exact, 3) -> 43;
+opcode(is_ne_exact, 3) -> 44;
+opcode(is_integer, 2) -> 45;
+opcode(is_float, 2) -> 46;
+opcode(is_number, 2) -> 47;
+opcode(is_atom, 2) -> 48;
+opcode(is_pid, 2) -> 49;
+opcode(is_reference, 2) -> 50;
+opcode(is_port, 2) -> 51;
+opcode(is_nil, 2) -> 52;
+opcode(is_binary, 2) -> 53;
+opcode(is_constant, 2) -> 54;
+opcode(is_list, 2) -> 55;
+opcode(is_nonempty_list, 2) -> 56;
+opcode(is_tuple, 2) -> 57;
+opcode(test_arity, 3) -> 58;
+opcode(select_val, 3) -> 59;
+opcode(select_tuple_arity, 3) -> 60;
+opcode(jump, 1) -> 61;
+opcode('catch', 2) -> 62;
+opcode(catch_end, 1) -> 63;
+opcode(move, 2) -> 64;
+opcode(get_list, 3) -> 65;
+opcode(get_tuple_element, 3) -> 66;
+opcode(set_tuple_element, 3) -> 67;
+opcode(put_string, 3) -> 68;
+opcode(put_list, 3) -> 69;
+opcode(put_tuple, 2) -> 70;
+opcode(put, 1) -> 71;
+opcode(badmatch, 1) -> 72;
+opcode(if_end, 0) -> 73;
+opcode(case_end, 1) -> 74;
+opcode(call_fun, 1) -> 75;
+opcode(make_fun, 3) -> 76;
+opcode(is_function, 2) -> 77;
+opcode(call_ext_only, 2) -> 78;
+opcode(bs_start_match, 2) -> 79;
+opcode(bs_get_integer, 5) -> 80;
+opcode(bs_get_float, 5) -> 81;
+opcode(bs_get_binary, 5) -> 82;
+opcode(bs_skip_bits, 4) -> 83;
+opcode(bs_test_tail, 2) -> 84;
+opcode(bs_save, 1) -> 85;
+opcode(bs_restore, 1) -> 86;
+opcode(bs_init, 2) -> 87;
+opcode(bs_final, 2) -> 88;
+opcode(bs_put_integer, 5) -> 89;
+opcode(bs_put_binary, 5) -> 90;
+opcode(bs_put_float, 5) -> 91;
+opcode(bs_put_string, 2) -> 92;
+opcode(bs_need_buf, 1) -> 93;
+opcode(fclearerror, 0) -> 94;
+opcode(fcheckerror, 1) -> 95;
+opcode(fmove, 2) -> 96;
+opcode(fconv, 2) -> 97;
+opcode(fadd, 4) -> 98;
+opcode(fsub, 4) -> 99;
+opcode(fmul, 4) -> 100;
+opcode(fdiv, 4) -> 101;
+opcode(fnegate, 3) -> 102;
+opcode(make_fun2, 1) -> 103;
+opcode('try', 2) -> 104;
+opcode(try_end, 1) -> 105;
+opcode(try_case, 1) -> 106;
+opcode(try_case_end, 1) -> 107;
+opcode(raise, 2) -> 108;
+opcode(bs_init2, 6) -> 109;
+opcode(bs_bits_to_bytes, 3) -> 110;
+opcode(bs_add, 5) -> 111;
+opcode(apply, 1) -> 112;
+opcode(apply_last, 2) -> 113;
+opcode(is_boolean, 2) -> 114;
+opcode(Name, Arity) -> erlang:error(badarg, [Name,Arity]).
+
+opname(1) -> {label,1};
+opname(2) -> {func_info,3};
+opname(3) -> {int_code_end,0};
+opname(4) -> {call,2};
+opname(5) -> {call_last,3};
+opname(6) -> {call_only,2};
+opname(7) -> {call_ext,2};
+opname(8) -> {call_ext_last,3};
+opname(9) -> {bif0,2};
+opname(10) -> {bif1,4};
+opname(11) -> {bif2,5};
+opname(12) -> {allocate,2};
+opname(13) -> {allocate_heap,3};
+opname(14) -> {allocate_zero,2};
+opname(15) -> {allocate_heap_zero,3};
+opname(16) -> {test_heap,2};
+opname(17) -> {init,1};
+opname(18) -> {deallocate,1};
+opname(19) -> {return,0};
+opname(20) -> {send,0};
+opname(21) -> {remove_message,0};
+opname(22) -> {timeout,0};
+opname(23) -> {loop_rec,2};
+opname(24) -> {loop_rec_end,1};
+opname(25) -> {wait,1};
+opname(26) -> {wait_timeout,2};
+opname(27) -> {m_plus,4};
+opname(28) -> {m_minus,4};
+opname(29) -> {m_times,4};
+opname(30) -> {m_div,4};
+opname(31) -> {int_div,4};
+opname(32) -> {int_rem,4};
+opname(33) -> {int_band,4};
+opname(34) -> {int_bor,4};
+opname(35) -> {int_bxor,4};
+opname(36) -> {int_bsl,4};
+opname(37) -> {int_bsr,4};
+opname(38) -> {int_bnot,3};
+opname(39) -> {is_lt,3};
+opname(40) -> {is_ge,3};
+opname(41) -> {is_eq,3};
+opname(42) -> {is_ne,3};
+opname(43) -> {is_eq_exact,3};
+opname(44) -> {is_ne_exact,3};
+opname(45) -> {is_integer,2};
+opname(46) -> {is_float,2};
+opname(47) -> {is_number,2};
+opname(48) -> {is_atom,2};
+opname(49) -> {is_pid,2};
+opname(50) -> {is_reference,2};
+opname(51) -> {is_port,2};
+opname(52) -> {is_nil,2};
+opname(53) -> {is_binary,2};
+opname(54) -> {is_constant,2};
+opname(55) -> {is_list,2};
+opname(56) -> {is_nonempty_list,2};
+opname(57) -> {is_tuple,2};
+opname(58) -> {test_arity,3};
+opname(59) -> {select_val,3};
+opname(60) -> {select_tuple_arity,3};
+opname(61) -> {jump,1};
+opname(62) -> {'catch',2};
+opname(63) -> {catch_end,1};
+opname(64) -> {move,2};
+opname(65) -> {get_list,3};
+opname(66) -> {get_tuple_element,3};
+opname(67) -> {set_tuple_element,3};
+opname(68) -> {put_string,3};
+opname(69) -> {put_list,3};
+opname(70) -> {put_tuple,2};
+opname(71) -> {put,1};
+opname(72) -> {badmatch,1};
+opname(73) -> {if_end,0};
+opname(74) -> {case_end,1};
+opname(75) -> {call_fun,1};
+opname(76) -> {make_fun,3};
+opname(77) -> {is_function,2};
+opname(78) -> {call_ext_only,2};
+opname(79) -> {bs_start_match,2};
+opname(80) -> {bs_get_integer,5};
+opname(81) -> {bs_get_float,5};
+opname(82) -> {bs_get_binary,5};
+opname(83) -> {bs_skip_bits,4};
+opname(84) -> {bs_test_tail,2};
+opname(85) -> {bs_save,1};
+opname(86) -> {bs_restore,1};
+opname(87) -> {bs_init,2};
+opname(88) -> {bs_final,2};
+opname(89) -> {bs_put_integer,5};
+opname(90) -> {bs_put_binary,5};
+opname(91) -> {bs_put_float,5};
+opname(92) -> {bs_put_string,2};
+opname(93) -> {bs_need_buf,1};
+opname(94) -> {fclearerror,0};
+opname(95) -> {fcheckerror,1};
+opname(96) -> {fmove,2};
+opname(97) -> {fconv,2};
+opname(98) -> {fadd,4};
+opname(99) -> {fsub,4};
+opname(100) -> {fmul,4};
+opname(101) -> {fdiv,4};
+opname(102) -> {fnegate,3};
+opname(103) -> {make_fun2,1};
+opname(104) -> {'try',2};
+opname(105) -> {try_end,1};
+opname(106) -> {try_case,1};
+opname(107) -> {try_case_end,1};
+opname(108) -> {raise,2};
+opname(109) -> {bs_init2,6};
+opname(110) -> {bs_bits_to_bytes,3};
+opname(111) -> {bs_add,5};
+opname(112) -> {apply,1};
+opname(113) -> {apply_last,2};
+opname(114) -> {is_boolean,2};
+opname(Number) -> erlang:error(badarg, [Number]).
diff --git a/lib/dialyzer/test/options1_tests_SUITE_data/src/compiler/beam_opcodes.hrl b/lib/dialyzer/test/options1_tests_SUITE_data/src/compiler/beam_opcodes.hrl
new file mode 100644
index 0000000000..1ad0887314
--- /dev/null
+++ b/lib/dialyzer/test/options1_tests_SUITE_data/src/compiler/beam_opcodes.hrl
@@ -0,0 +1,12 @@
+%% Warning: Do not edit this file. It was automatically
+%% generated by 'beam_makeops' on Wed Nov 24 17:52:43 2004.
+
+-define(tag_u, 0).
+-define(tag_i, 1).
+-define(tag_a, 2).
+-define(tag_x, 3).
+-define(tag_y, 4).
+-define(tag_f, 5).
+-define(tag_h, 6).
+-define(tag_z, 7).
+
diff --git a/lib/dialyzer/test/options1_tests_SUITE_data/src/compiler/beam_type.erl b/lib/dialyzer/test/options1_tests_SUITE_data/src/compiler/beam_type.erl
new file mode 100644
index 0000000000..7d288b249c
--- /dev/null
+++ b/lib/dialyzer/test/options1_tests_SUITE_data/src/compiler/beam_type.erl
@@ -0,0 +1,551 @@
+%% ``The contents of this file are subject to the Erlang Public License,
+%% Version 1.1, (the "License"); you may not use this file except in
+%% compliance with the License. You should have received a copy of the
+%% Erlang Public License along with this software. If not, it can be
+%% retrieved via the world wide web at http://www.erlang.org/.
+%%
+%% Software distributed under the License is distributed on an "AS IS"
+%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
+%% the License for the specific language governing rights and limitations
+%% under the License.
+%%
+%% The Initial Developer of the Original Code is Ericsson Utvecklings AB.
+%% Portions created by Ericsson are Copyright 1999, Ericsson Utvecklings
+%% AB. All Rights Reserved.''
+%%
+%% $Id: beam_type.erl,v 1.1 2008/12/17 09:53:41 mikpe Exp $
+%%
+%% Purpose : Type-based optimisations.
+
+-module(beam_type).
+
+-export([module/2]).
+
+-import(lists, [map/2,foldl/3,reverse/1,reverse/2,filter/2,member/2]).
+
+module({Mod,Exp,Attr,Fs0,Lc}, Opt) ->
+ AllowFloatOpts = not member(no_float_opt, Opt),
+ Fs = map(fun(F) -> function(F, AllowFloatOpts) end, Fs0),
+ {ok,{Mod,Exp,Attr,Fs,Lc}}.
+
+function({function,Name,Arity,CLabel,Asm0}, AllowFloatOpts) ->
+ Asm = opt(Asm0, AllowFloatOpts, [], tdb_new()),
+ {function,Name,Arity,CLabel,Asm}.
+
+%% opt([Instruction], AllowFloatOpts, Accumulator, TypeDb) -> {[Instruction'],TypeDb'}
+%% Keep track of type information; try to simplify.
+
+opt([{block,Body1}|Is], AllowFloatOpts, [{block,Body0}|Acc], Ts0) ->
+ {Body2,Ts} = simplify(Body1, Ts0, AllowFloatOpts),
+ Body = beam_block:merge_blocks(Body0, Body2),
+ opt(Is, AllowFloatOpts, [{block,Body}|Acc], Ts);
+opt([{block,Body0}|Is], AllowFloatOpts, Acc, Ts0) ->
+ {Body,Ts} = simplify(Body0, Ts0, AllowFloatOpts),
+ opt(Is, AllowFloatOpts, [{block,Body}|Acc], Ts);
+opt([I0|Is], AllowFloatOpts, Acc, Ts0) ->
+ case simplify([I0], Ts0, AllowFloatOpts) of
+ {[],Ts} -> opt(Is, AllowFloatOpts, Acc, Ts);
+ {[I],Ts} -> opt(Is, AllowFloatOpts, [I|Acc], Ts)
+ end;
+opt([], _, Acc, _) -> reverse(Acc).
+
+%% simplify(Instruction, TypeDb, AllowFloatOpts) -> NewInstruction
+%% Simplify an instruction using type information (this is
+%% technically a "strength reduction").
+
+simplify(Is, TypeDb, false) ->
+ simplify(Is, TypeDb, no_float_opt, []);
+simplify(Is, TypeDb, true) ->
+ case are_live_regs_determinable(Is) of
+ false -> simplify(Is, TypeDb, no_float_opt, []);
+ true -> simplify(Is, TypeDb, [], [])
+ end.
+
+simplify([{set,[D],[{integer,Index},Reg],{bif,element,_}}=I0|Is]=Is0, Ts0, Rs0, Acc0) ->
+ I = case max_tuple_size(Reg, Ts0) of
+ Sz when 0 < Index, Index =< Sz ->
+ {set,[D],[Reg],{get_tuple_element,Index-1}};
+ _Other -> I0
+ end,
+ Ts = update(I, Ts0),
+ {Rs,Acc} = flush(Rs0, Is0, Acc0),
+ simplify(Is, Ts, Rs, [I|checkerror(Acc)]);
+simplify([{set,[D0],[A],{bif,'-',{f,0}}}=I|Is]=Is0, Ts0, Rs0, Acc0)
+ when Rs0 =/= no_float_opt ->
+ case tdb_find(A, Ts0) of
+ float ->
+ {Rs1,Acc1} = load_reg(A, Ts0, Rs0, Acc0),
+ {D,Rs} = find_dest(D0, Rs1),
+ Areg = fetch_reg(A, Rs),
+ Acc = [{set,[D],[Areg],{bif,fnegate,{f,0}}}|clearerror(Acc1)],
+ Ts = tdb_update([{D0,float}], Ts0),
+ simplify(Is, Ts, Rs, Acc);
+ _Other ->
+ Ts = update(I, Ts0),
+ {Rs,Acc} = flush(Rs0, Is0, Acc0),
+ simplify(Is, Ts, Rs, [I|checkerror(Acc)])
+ end;
+simplify([{set,[_],[_],{bif,_,{f,0}}}=I|Is]=Is0, Ts0, Rs0, Acc0) ->
+ Ts = update(I, Ts0),
+ {Rs,Acc} = flush(Rs0, Is0, Acc0),
+ simplify(Is, Ts, Rs, [I|checkerror(Acc)]);
+simplify([{set,[D0],[A,B],{bif,Op0,{f,0}}}=I|Is]=Is0, Ts0, Rs0, Acc0)
+ when Rs0 =/= no_float_opt ->
+ case float_op(Op0, A, B, Ts0) of
+ no ->
+ Ts = update(I, Ts0),
+ {Rs,Acc} = flush(Rs0, Is0, Acc0),
+ simplify(Is, Ts, Rs, [I|checkerror(Acc)]);
+ {yes,Op} ->
+ {Rs1,Acc1} = load_reg(A, Ts0, Rs0, Acc0),
+ {Rs2,Acc2} = load_reg(B, Ts0, Rs1, Acc1),
+ {D,Rs} = find_dest(D0, Rs2),
+ Areg = fetch_reg(A, Rs),
+ Breg = fetch_reg(B, Rs),
+ Acc = [{set,[D],[Areg,Breg],{bif,Op,{f,0}}}|clearerror(Acc2)],
+ Ts = tdb_update([{D0,float}], Ts0),
+ simplify(Is, Ts, Rs, Acc)
+ end;
+simplify([{set,[D],[TupleReg],{get_tuple_element,0}}=I|Is0], Ts0, Rs0, Acc0) ->
+ case tdb_find(TupleReg, Ts0) of
+ {tuple,_,[Contents]} ->
+ Ts = tdb_update([{D,Contents}], Ts0),
+ {Rs,Acc} = flush(Rs0, Is0, Acc0),
+ simplify(Is0, Ts, Rs, [{set,[D],[Contents],move}|Acc]);
+ _ ->
+ Ts = update(I, Ts0),
+ {Rs,Acc} = flush(Rs0, Is0, Acc0),
+ simplify(Is0, Ts, Rs, [I|checkerror(Acc)])
+ end;
+simplify([{set,_,_,{'catch',_}}=I|Is]=Is0, _Ts, Rs0, Acc0) ->
+ Acc = flush_all(Rs0, Is0, Acc0),
+ simplify(Is, tdb_new(), Rs0, [I|Acc]);
+simplify([{test,is_tuple,_,[R]}=I|Is], Ts, Rs, Acc) ->
+ case tdb_find(R, Ts) of
+ {tuple,_,_} -> simplify(Is, Ts, Rs, Acc);
+ _ ->
+ simplify(Is, Ts, Rs, [I|Acc])
+ end;
+simplify([{test,test_arity,_,[R,Arity]}=I|Is], Ts0, Rs, Acc) ->
+ case tdb_find(R, Ts0) of
+ {tuple,Arity,_} ->
+ simplify(Is, Ts0, Rs, Acc);
+ _Other ->
+ Ts = update(I, Ts0),
+ simplify(Is, Ts, Rs, [I|Acc])
+ end;
+simplify([{test,is_eq_exact,Fail,[R,{atom,_}=Atom]}=I|Is0], Ts0, Rs0, Acc0) ->
+ Acc1 = case tdb_find(R, Ts0) of
+ {atom,_}=Atom -> Acc0;
+ {atom,_} -> [{jump,Fail}|Acc0];
+ _ -> [I|Acc0]
+ end,
+ Ts = update(I, Ts0),
+ {Rs,Acc} = flush(Rs0, Is0, Acc1),
+ simplify(Is0, Ts, Rs, Acc);
+simplify([I|Is]=Is0, Ts0, Rs0, Acc0) ->
+ Ts = update(I, Ts0),
+ {Rs,Acc} = flush(Rs0, Is0, Acc0),
+ simplify(Is, Ts, Rs, [I|Acc]);
+simplify([], Ts, Rs, Acc) ->
+ Is0 = reverse(flush_all(Rs, [], Acc)),
+ Is1 = opt_fmoves(Is0, []),
+ Is = add_ftest_heap(Is1),
+ {Is,Ts}.
+
+opt_fmoves([{set,[{x,_}=R],[{fr,_}]=Src,fmove}=I1,
+ {set,[{y,_}]=Dst,[{x,_}=R],move}=I2|Is], Acc) ->
+ case beam_block:is_killed(R, Is) of
+ false -> opt_fmoves(Is, [I2,I1|Acc]);
+ true -> opt_fmoves(Is, [{set,Dst,Src,fmove}|Acc])
+ end;
+opt_fmoves([I|Is], Acc) ->
+ opt_fmoves(Is, [I|Acc]);
+opt_fmoves([], Acc) -> reverse(Acc).
+
+clearerror(Is) ->
+ clearerror(Is, Is).
+
+clearerror([{set,[],[],fclearerror}|_], OrigIs) -> OrigIs;
+clearerror([{set,[],[],fcheckerror}|_], OrigIs) -> [{set,[],[],fclearerror}|OrigIs];
+clearerror([_|Is], OrigIs) -> clearerror(Is, OrigIs);
+clearerror([], OrigIs) -> [{set,[],[],fclearerror}|OrigIs].
+
+%% update(Instruction, TypeDb) -> NewTypeDb
+%% Update the type database to account for executing an instruction.
+%%
+%% First the cases for instructions inside basic blocks.
+update({set,[D],[S],move}, Ts0) ->
+ Ops = case tdb_find(S, Ts0) of
+ error -> [{D,kill}];
+ Info -> [{D,Info}]
+ end,
+ tdb_update(Ops, Ts0);
+update({set,[D],[{integer,I},Reg],{bif,element,_}}, Ts0) ->
+ tdb_update([{Reg,{tuple,I,[]}},{D,kill}], Ts0);
+update({set,[D],[_Index,Reg],{bif,element,_}}, Ts0) ->
+ tdb_update([{Reg,{tuple,0,[]}},{D,kill}], Ts0);
+update({set,[D],[S],{get_tuple_element,0}}, Ts) ->
+ tdb_update([{D,{tuple_element,S,0}}], Ts);
+update({set,[D],[S],{bif,float,{f,0}}}, Ts0) ->
+ %% Make sure we reject non-numeric literal argument.
+ case possibly_numeric(S) of
+ true -> tdb_update([{D,float}], Ts0);
+ false -> Ts0
+ end;
+update({set,[D],[S1,S2],{bif,'/',{f,0}}}, Ts0) ->
+ %% Make sure we reject non-numeric literals.
+ case possibly_numeric(S1) andalso possibly_numeric(S2) of
+ true -> tdb_update([{D,float}], Ts0);
+ false -> Ts0
+ end;
+update({set,[D],[S1,S2],{bif,Op,{f,0}}}, Ts0) ->
+ case arith_op(Op) of
+ no ->
+ tdb_update([{D,kill}], Ts0);
+ {yes,_} ->
+ case {tdb_find(S1, Ts0),tdb_find(S2, Ts0)} of
+ {float,_} -> tdb_update([{D,float}], Ts0);
+ {_,float} -> tdb_update([{D,float}], Ts0);
+ {_,_} -> tdb_update([{D,kill}], Ts0)
+ end
+ end;
+update({set,[],_Src,_Op}, Ts0) -> Ts0;
+update({set,[D],_Src,_Op}, Ts0) ->
+ tdb_update([{D,kill}], Ts0);
+update({set,[D1,D2],_Src,_Op}, Ts0) ->
+ tdb_update([{D1,kill},{D2,kill}], Ts0);
+update({allocate,_,_}, Ts) -> Ts;
+update({init,D}, Ts) ->
+ tdb_update([{D,kill}], Ts);
+update({kill,D}, Ts) ->
+ tdb_update([{D,kill}], Ts);
+update({'%live',_}, Ts) -> Ts;
+
+%% Instructions outside of blocks.
+update({test,is_float,_Fail,[Src]}, Ts0) ->
+ tdb_update([{Src,float}], Ts0);
+update({test,test_arity,_Fail,[Src,Arity]}, Ts0) ->
+ tdb_update([{Src,{tuple,Arity,[]}}], Ts0);
+update({test,is_eq_exact,_,[Reg,{atom,_}=Atom]}, Ts) ->
+ case tdb_find(Reg, Ts) of
+ error ->
+ Ts;
+ {tuple_element,TupleReg,0} ->
+ tdb_update([{TupleReg,{tuple,1,[Atom]}}], Ts);
+ _ ->
+ Ts
+ end;
+update({test,_Test,_Fail,_Other}, Ts) -> Ts;
+update({call_ext,1,{extfunc,math,Math,1}}, Ts) ->
+ case is_math_bif(Math, 1) of
+ true -> tdb_update([{{x,0},float}], Ts);
+ false -> tdb_kill_xregs(Ts)
+ end;
+update({call_ext,2,{extfunc,math,Math,2}}, Ts) ->
+ case is_math_bif(Math, 2) of
+ true -> tdb_update([{{x,0},float}], Ts);
+ false -> tdb_kill_xregs(Ts)
+ end;
+update({call_ext,3,{extfunc,erlang,setelement,3}}, Ts0) ->
+ Op = case tdb_find({x,1}, Ts0) of
+ error -> kill;
+ Info -> Info
+ end,
+ Ts1 = tdb_kill_xregs(Ts0),
+ tdb_update([{{x,0},Op}], Ts1);
+update({call,_Arity,_Func}, Ts) -> tdb_kill_xregs(Ts);
+update({call_ext,_Arity,_Func}, Ts) -> tdb_kill_xregs(Ts);
+update({make_fun2,_,_,_,_}, Ts) -> tdb_kill_xregs(Ts);
+
+%% The instruction is unknown. Kill all information.
+update(_I, _Ts) -> tdb_new().
+
+is_math_bif(cos, 1) -> true;
+is_math_bif(cosh, 1) -> true;
+is_math_bif(sin, 1) -> true;
+is_math_bif(sinh, 1) -> true;
+is_math_bif(tan, 1) -> true;
+is_math_bif(tanh, 1) -> true;
+is_math_bif(acos, 1) -> true;
+is_math_bif(acosh, 1) -> true;
+is_math_bif(asin, 1) -> true;
+is_math_bif(asinh, 1) -> true;
+is_math_bif(atan, 1) -> true;
+is_math_bif(atanh, 1) -> true;
+is_math_bif(erf, 1) -> true;
+is_math_bif(erfc, 1) -> true;
+is_math_bif(exp, 1) -> true;
+is_math_bif(log, 1) -> true;
+is_math_bif(log10, 1) -> true;
+is_math_bif(sqrt, 1) -> true;
+is_math_bif(atan2, 2) -> true;
+is_math_bif(pow, 2) -> true;
+is_math_bif(pi, 0) -> true;
+is_math_bif(_, _) -> false.
+
+%% Reject non-numeric literals.
+possibly_numeric({x,_}) -> true;
+possibly_numeric({y,_}) -> true;
+possibly_numeric({integer,_}) -> true;
+possibly_numeric({float,_}) -> true;
+possibly_numeric(_) -> false.
+
+max_tuple_size(Reg, Ts) ->
+ case tdb_find(Reg, Ts) of
+ {tuple,Sz,_} -> Sz;
+ _Other -> 0
+ end.
+
+float_op('/', A, B, _) ->
+ case possibly_numeric(A) andalso possibly_numeric(B) of
+ true -> {yes,fdiv};
+ false -> no
+ end;
+float_op(Op, {float,_}, B, _) ->
+ case possibly_numeric(B) of
+ true -> arith_op(Op);
+ false -> no
+ end;
+float_op(Op, A, {float,_}, _) ->
+ case possibly_numeric(A) of
+ true -> arith_op(Op);
+ false -> no
+ end;
+float_op(Op, A, B, Ts) ->
+ case {tdb_find(A, Ts),tdb_find(B, Ts)} of
+ {float,_} -> arith_op(Op);
+ {_,float} -> arith_op(Op);
+ {_,_} -> no
+ end.
+
+find_dest(V, Rs0) ->
+ case find_reg(V, Rs0) of
+ {ok,FR} ->
+ {FR,mark(V, Rs0, dirty)};
+ error ->
+ Rs = put_reg(V, Rs0, dirty),
+ {ok,FR} = find_reg(V, Rs),
+ {FR,Rs}
+ end.
+
+load_reg({float,_}=F, _, Rs0, Is0) ->
+ Rs = put_reg(F, Rs0, clean),
+ {ok,FR} = find_reg(F, Rs),
+ Is = [{set,[FR],[F],fmove}|Is0],
+ {Rs,Is};
+load_reg(V, Ts, Rs0, Is0) ->
+ case find_reg(V, Rs0) of
+ {ok,_FR} -> {Rs0,Is0};
+ error ->
+ Rs = put_reg(V, Rs0, clean),
+ {ok,FR} = find_reg(V, Rs),
+ Op = case tdb_find(V, Ts) of
+ float -> fmove;
+ _ -> fconv
+ end,
+ Is = [{set,[FR],[V],Op}|Is0],
+ {Rs,Is}
+ end.
+
+arith_op('+') -> {yes,fadd};
+arith_op('-') -> {yes,fsub};
+arith_op('*') -> {yes,fmul};
+arith_op('/') -> {yes,fdiv};
+arith_op(_) -> no.
+
+flush(no_float_opt, _, Acc) -> {no_float_opt,Acc};
+flush(Rs, [{set,[_],[],{put_tuple,_}}|_]=Is0, Acc0) ->
+ Acc = flush_all(Rs, Is0, Acc0),
+ {[],Acc};
+flush(Rs0, [{set,Ds,Ss,_Op}|_], Acc0) ->
+ Save = gb_sets:from_list(Ss),
+ Acc = save_regs(Rs0, Save, Acc0),
+ Rs1 = foldl(fun(S, A) -> mark(S, A, clean) end, Rs0, Ss),
+ Kill = gb_sets:from_list(Ds),
+ Rs = kill_regs(Rs1, Kill),
+ {Rs,Acc};
+flush(Rs0, Is, Acc0) ->
+ Acc = flush_all(Rs0, Is, Acc0),
+ {[],Acc}.
+
+flush_all(no_float_opt, _, Acc) -> Acc;
+flush_all([{_,{float,_},_}|Rs], Is, Acc) ->
+ flush_all(Rs, Is, Acc);
+flush_all([{I,V,dirty}|Rs], Is, Acc0) ->
+ Acc = checkerror(Acc0),
+ case beam_block:is_killed(V, Is) of
+ true -> flush_all(Rs, Is, Acc);
+ false -> flush_all(Rs, Is, [{set,[V],[{fr,I}],fmove}|Acc])
+ end;
+flush_all([{_,_,clean}|Rs], Is, Acc) -> flush_all(Rs, Is, Acc);
+flush_all([free|Rs], Is, Acc) -> flush_all(Rs, Is, Acc);
+flush_all([], _, Acc) -> Acc.
+
+save_regs(Rs, Save, Acc) ->
+ foldl(fun(R, A) -> save_reg(R, Save, A) end, Acc, Rs).
+
+save_reg({I,V,dirty}, Save, Acc) ->
+ case gb_sets:is_member(V, Save) of
+ true -> [{set,[V],[{fr,I}],fmove}|checkerror(Acc)];
+ false -> Acc
+ end;
+save_reg(_, _, Acc) -> Acc.
+
+kill_regs(Rs, Kill) ->
+ map(fun(R) -> kill_reg(R, Kill) end, Rs).
+
+kill_reg({_,V,_}=R, Kill) ->
+ case gb_sets:is_member(V, Kill) of
+ true -> free;
+ false -> R
+ end;
+kill_reg(R, _) -> R.
+
+mark(V, [{I,V,_}|Rs], Mark) -> [{I,V,Mark}|Rs];
+mark(V, [R|Rs], Mark) -> [R|mark(V, Rs, Mark)];
+mark(_, [], _) -> [].
+
+fetch_reg(V, [{I,V,_}|_]) -> {fr,I};
+fetch_reg(V, [_|SRs]) -> fetch_reg(V, SRs).
+
+find_reg(V, [{I,V,_}|_]) -> {ok,{fr,I}};
+find_reg(V, [_|SRs]) -> find_reg(V, SRs);
+find_reg(_, []) -> error.
+
+put_reg(V, Rs, Dirty) -> put_reg_1(V, Rs, Dirty, 0).
+
+put_reg_1(V, [free|Rs], Dirty, I) -> [{I,V,Dirty}|Rs];
+put_reg_1(V, [R|Rs], Dirty, I) -> [R|put_reg_1(V, Rs, Dirty, I+1)];
+put_reg_1(V, [], Dirty, I) -> [{I,V,Dirty}].
+
+checkerror(Is) ->
+ checkerror_1(Is, Is).
+
+checkerror_1([{set,[],[],fcheckerror}|_], OrigIs) -> OrigIs;
+checkerror_1([{set,[],[],fclearerror}|_], OrigIs) -> OrigIs;
+checkerror_1([{set,_,_,{bif,fadd,_}}|_], OrigIs) -> checkerror_2(OrigIs);
+checkerror_1([{set,_,_,{bif,fsub,_}}|_], OrigIs) -> checkerror_2(OrigIs);
+checkerror_1([{set,_,_,{bif,fmul,_}}|_], OrigIs) -> checkerror_2(OrigIs);
+checkerror_1([{set,_,_,{bif,fdiv,_}}|_], OrigIs) -> checkerror_2(OrigIs);
+checkerror_1([{set,_,_,{bif,fnegate,_}}|_], OrigIs) -> checkerror_2(OrigIs);
+checkerror_1([_|Is], OrigIs) -> checkerror_1(Is, OrigIs);
+checkerror_1([], OrigIs) -> OrigIs.
+
+checkerror_2(OrigIs) -> [{set,[],[],fcheckerror}|OrigIs].
+
+add_ftest_heap(Is) ->
+ add_ftest_heap_1(reverse(Is), 0, []).
+
+add_ftest_heap_1([{set,_,[{fr,_}],fmove}=I|Is], Floats, Acc) ->
+ add_ftest_heap_1(Is, Floats+1, [I|Acc]);
+add_ftest_heap_1([{allocate,_,_}=I|Is], 0, Acc) ->
+ reverse(Is, [I|Acc]);
+add_ftest_heap_1([{allocate,Regs,{Z,Stk,Heap,Inits}}|Is], Floats, Acc) ->
+ reverse(Is, [{allocate,Regs,{Z,Stk,Heap,Floats,Inits}}|Acc]);
+add_ftest_heap_1([I|Is], Floats, Acc) ->
+ add_ftest_heap_1(Is, Floats, [I|Acc]);
+add_ftest_heap_1([], 0, Acc) ->
+ Acc;
+add_ftest_heap_1([], Floats, Is) ->
+ Regs = beam_block:live_at_entry(Is),
+ [{allocate,Regs,{nozero,nostack,0,Floats,[]}}|Is].
+
+are_live_regs_determinable([{allocate,_,_}|_]) -> true;
+are_live_regs_determinable([{'%live',_}|_]) -> true;
+are_live_regs_determinable([_|Is]) -> are_live_regs_determinable(Is);
+are_live_regs_determinable([]) -> false.
+
+
+%%% Routines for maintaining a type database. The type database
+%%% associates type information with registers.
+%%%
+%%% {tuple,Size,First} means that the corresponding register contains a
+%%% tuple with *at least* Size elements. An tuple with unknown
+%%% size is represented as {tuple,0}. First is either [] (meaning that
+%%% the tuple's first element is unknown) or [FirstElement] (the contents
+%%% of the first element).
+%%%
+%%% 'float' means that the register contains a float.
+
+%% tdb_new() -> EmptyDataBase
+%% Creates a new, empty type database.
+
+tdb_new() -> [].
+
+%% tdb_find(Register, Db) -> Information|error
+%% Returns type information or the atom error if there are no type
+%% information available for Register.
+
+tdb_find(Key, [{K,_}|_]) when Key < K -> error;
+tdb_find(Key, [{Key,Info}|_]) -> Info;
+tdb_find(Key, [_|Db]) -> tdb_find(Key, Db);
+tdb_find(_, []) -> error.
+
+%% tdb_update([UpdateOp], Db) -> NewDb
+%% UpdateOp = {Register,kill}|{Register,NewInfo}
+%% Updates a type database. If a 'kill' operation is given, the type
+%% information for that register will be removed from the database.
+%% A kill operation takes precende over other operations for the same
+%% register (i.e. [{{x,0},kill},{{x,0},{tuple,5}}] means that the
+%% the existing type information, if any, will be discarded, and the
+%% the '{tuple,5}' information ignored.
+%%
+%% If NewInfo information is given and there exists information about
+%% the register, the old and new type information will be merged.
+%% For instance, {tuple,5} and {tuple,10} will be merged to produce
+%% {tuple,10}.
+
+tdb_update(Uis0, Ts0) ->
+ Uis1 = filter(fun ({{x,_},_Op}) -> true;
+ ({{y,_},_Op}) -> true;
+ (_) -> false
+ end, Uis0),
+ tdb_update1(lists:sort(Uis1), Ts0).
+
+tdb_update1([{Key,kill}|Ops], [{K,_Old}|_]=Db) when Key < K ->
+ tdb_update1(remove_key(Key, Ops), Db);
+tdb_update1([{Key,_New}=New|Ops], [{K,_Old}|_]=Db) when Key < K ->
+ [New|tdb_update1(Ops, Db)];
+tdb_update1([{Key,kill}|Ops], [{Key,_}|Db]) ->
+ tdb_update1(remove_key(Key, Ops), Db);
+tdb_update1([{Key,NewInfo}|Ops], [{Key,OldInfo}|Db]) ->
+ [{Key,merge_type_info(NewInfo, OldInfo)}|tdb_update1(Ops, Db)];
+tdb_update1([{_,_}|_]=Ops, [Old|Db]) ->
+ [Old|tdb_update1(Ops, Db)];
+tdb_update1([{Key,kill}|Ops], []) ->
+ tdb_update1(remove_key(Key, Ops), []);
+tdb_update1([{_,_}=New|Ops], []) ->
+ [New|tdb_update1(Ops, [])];
+tdb_update1([], Db) -> Db.
+
+%% tdb_kill_xregs(Db) -> NewDb
+%% Kill all information about x registers. Also kill all tuple_element
+%% dependencies from y registers to x registers.
+
+tdb_kill_xregs([{{x,_},_Type}|Db]) -> tdb_kill_xregs(Db);
+tdb_kill_xregs([{{y,_},{tuple_element,{x,_},_}}|Db]) -> tdb_kill_xregs(Db);
+tdb_kill_xregs([Any|Db]) -> [Any|tdb_kill_xregs(Db)];
+tdb_kill_xregs([]) -> [].
+
+remove_key(Key, [{Key,_Op}|Ops]) -> remove_key(Key, Ops);
+remove_key(_, Ops) -> Ops.
+
+merge_type_info(I, I) -> I;
+merge_type_info({tuple,Sz1,Same}, {tuple,Sz2,Same}=Max) when Sz1 < Sz2 ->
+ Max;
+merge_type_info({tuple,Sz1,Same}=Max, {tuple,Sz2,Same}) when Sz1 > Sz2 ->
+ Max;
+merge_type_info({tuple,Sz1,[]}, {tuple,Sz2,First}) ->
+ merge_type_info({tuple,Sz1,First}, {tuple,Sz2,First});
+merge_type_info({tuple,Sz1,First}, {tuple,Sz2,_}) ->
+ merge_type_info({tuple,Sz1,First}, {tuple,Sz2,First});
+merge_type_info(NewType, _) ->
+ verify_type(NewType),
+ NewType.
+
+verify_type({tuple,Sz,[]}) when is_integer(Sz) -> ok;
+verify_type({tuple,Sz,[_]}) when is_integer(Sz) -> ok;
+verify_type({tuple_element,_,_}) -> ok;
+verify_type(float) -> ok;
+verify_type({atom,_}) -> ok.
diff --git a/lib/dialyzer/test/options1_tests_SUITE_data/src/compiler/beam_validator.erl b/lib/dialyzer/test/options1_tests_SUITE_data/src/compiler/beam_validator.erl
new file mode 100644
index 0000000000..a01be447b0
--- /dev/null
+++ b/lib/dialyzer/test/options1_tests_SUITE_data/src/compiler/beam_validator.erl
@@ -0,0 +1,1022 @@
+%% ``The contents of this file are subject to the Erlang Public License,
+%% Version 1.1, (the "License"); you may not use this file except in
+%% compliance with the License. You should have received a copy of the
+%% Erlang Public License along with this software. If not, it can be
+%% retrieved via the world wide web at http://www.erlang.org/.
+%%
+%% Software distributed under the License is distributed on an "AS IS"
+%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
+%% the License for the specific language governing rights and limitations
+%% under the License.
+%%
+%% The Initial Developer of the Original Code is Ericsson Utvecklings AB.
+%% Portions created by Ericsson are Copyright 1999, Ericsson Utvecklings
+%% AB. All Rights Reserved.''
+%%
+%% $Id: beam_validator.erl,v 1.1 2008/12/17 09:53:41 mikpe Exp $
+
+-module(beam_validator).
+
+-export([file/1,files/1]).
+
+%% Interface for compiler.
+-export([module/2,format_error/1]).
+
+-import(lists, [reverse/1,foldl/3]).
+
+-define(MAXREG, 1024).
+
+-define(DEBUG, 1).
+-undef(DEBUG).
+-ifdef(DEBUG).
+-define(DBG_FORMAT(F, D), (io:format((F), (D)))).
+-else.
+-define(DBG_FORMAT(F, D), ok).
+-endif.
+
+%%%
+%%% API functions.
+%%%
+
+files([F|Fs]) ->
+ ?DBG_FORMAT("# Verifying: ~p~n", [F]),
+ case file(F) of
+ ok -> ok;
+ {error,Es} ->
+ io:format("~p:~n~s~n", [F,format_error(Es)])
+ end,
+ files(Fs);
+files([]) -> ok.
+
+file(Name) when is_list(Name) ->
+ case case filename:extension(Name) of
+ ".S" -> s_file(Name);
+ ".beam" -> beam_file(Name)
+ end of
+ [] -> ok;
+ Es -> {error,Es}
+ end.
+
+%% To be called by the compiler.
+module({Mod,Exp,Attr,Fs,Lc}=Code, _Opts)
+ when is_atom(Mod), is_list(Exp), is_list(Attr), is_integer(Lc) ->
+ case validate(Fs) of
+ [] -> {ok,Code};
+ Es0 ->
+ Es = [{?MODULE,E} || E <- Es0],
+ {error,[{atom_to_list(Mod),Es}]}
+ end.
+
+format_error([]) -> [];
+format_error([{{M,F,A},{I,Off,Desc}}|Es]) ->
+ [io_lib:format(" ~p:~p/~p+~p:~n ~p - ~p~n",
+ [M,F,A,Off,I,Desc])|format_error(Es)];
+format_error({{_M,F,A},{I,Off,Desc}}) ->
+ io_lib:format(
+ "function ~p/~p+~p:~n"
+ " Internal consistency check failed - please report this bug.~n"
+ " Instruction: ~p~n"
+ " Error: ~p:~n", [F,A,Off,I,Desc]).
+
+%%%
+%%% Local functions follow.
+%%%
+
+s_file(Name) ->
+ {ok,Is} = file:consult(Name),
+ Fs = find_functions(Is),
+ validate(Fs).
+
+find_functions(Fs) ->
+ find_functions_1(Fs, none, [], []).
+
+find_functions_1([{function,Name,Arity,Entry}|Is], Func, FuncAcc, Acc0) ->
+ Acc = add_func(Func, FuncAcc, Acc0),
+ find_functions_1(Is, {Name,Arity,Entry}, [], Acc);
+find_functions_1([I|Is], Func, FuncAcc, Acc) ->
+ find_functions_1(Is, Func, [I|FuncAcc], Acc);
+find_functions_1([], Func, FuncAcc, Acc) ->
+ reverse(add_func(Func, FuncAcc, Acc)).
+
+add_func(none, _, Acc) -> Acc;
+add_func({Name,Arity,Entry}, Is, Acc) ->
+ [{function,Name,Arity,Entry,reverse(Is)}|Acc].
+
+beam_file(Name) ->
+ try beam_disasm:file(Name) of
+ {error,beam_lib,Reason} -> [{beam_lib,Reason}];
+ {beam_file,L} ->
+ {value,{code,Code0}} = lists:keysearch(code, 1, L),
+ Code = beam_file_1(Code0, []),
+ validate(Code)
+ catch _:_ -> [disassembly_failed]
+ end.
+
+beam_file_1([F0|Fs], Acc) ->
+ F = conv_func(F0),
+ beam_file_1(Fs, [F|Acc]);
+beam_file_1([], Acc) -> reverse(Acc).
+
+%% Convert from the disassembly format to the internal format
+%% used by the compiler (as passed to the assembler).
+
+conv_func(Is) ->
+ conv_func_1(labels(Is)).
+
+conv_func_1({Ls,[{func_info,[{atom,M},{atom,F},Ar]},
+ {label,Entry}=Le|Is]}) ->
+ %% The entry label gets maybe not correct here
+ {function,F,Ar,Entry,
+ [{label,L}||L<-Ls]++[{func_info,{atom,M},{atom,F},Ar},Le|Is]}.
+
+%%%
+%%% The validator follows.
+%%%
+%%% The purpose of the validator is find errors in the generated code
+%%% that may cause the emulator to crash or behave strangely.
+%%% We don't care about type errors in the user's code that will
+%%% cause a proper exception at run-time.
+%%%
+
+%%% Things currently not checked. XXX
+%%%
+%%% - That floating point registers are initialized before used.
+%%% - That fclearerror and fcheckerror are used properly.
+%%% - Heap allocation for floating point numbers.
+%%% - Heap allocation for binaries.
+%%% - That a catchtag or trytag is not overwritten by the wrong
+%%% type of instruction (such as move/2).
+%%% - Make sure that all catchtags and trytags have been removed
+%%% from the stack at return/tail call.
+%%% - Verify get_list instructions.
+%%%
+
+%% validate([Function]) -> [] | [Error]
+%% A list of functions with their code. The code is in the same
+%% format as used in the compiler and in .S files.
+validate([]) -> [];
+validate([{function,Name,Ar,Entry,Code}|Fs]) ->
+ try validate_1(Code, Name, Ar, Entry) of
+ _ -> validate(Fs)
+ catch
+ Error ->
+ [Error|validate(Fs)];
+ error:Error ->
+ [validate_error(Error, Name, Ar)|validate(Fs)]
+ end.
+
+-ifdef(DEBUG).
+validate_error(Error, Name, Ar) ->
+ exit(validate_error_1(Error, Name, Ar)).
+-else.
+validate_error(Error, Name, Ar) ->
+ validate_error_1(Error, Name, Ar).
+-endif.
+validate_error_1(Error, Name, Ar) ->
+ {{'_',Name,Ar},
+ {internal_error,'_',{Error,erlang:get_stacktrace()}}}.
+
+-record(st, %Emulation state
+ {x=init_regs(0, term), %x register info.
+ y=init_regs(0, initialized), %y register info.
+ numy=none, %Number of y registers.
+ h=0, %Available heap size.
+ ct=[] %List of hot catch/try labels
+ }).
+
+-record(vst, %Validator state
+ {current=none, %Current state
+ branched=gb_trees:empty() %States at jumps
+ }).
+
+-ifdef(DEBUG).
+print_st(#st{x=Xs,y=Ys,numy=NumY,h=H,ct=Ct}) ->
+ io:format(" #st{x=~p~n"
+ " y=~p~n"
+ " numy=~p,h=~p,ct=~w~n",
+ [gb_trees:to_list(Xs),gb_trees:to_list(Ys),NumY,H,Ct]).
+-endif.
+
+validate_1(Is, Name, Arity, Entry) ->
+ validate_2(labels(Is), Name, Arity, Entry).
+
+validate_2({Ls1,[{func_info,{atom,Mod},{atom,Name},Arity}=_F|Is]},
+ Name, Arity, Entry) ->
+ lists:foreach(fun (_L) -> ?DBG_FORMAT(" ~p.~n", [_L]) end, Ls1),
+ ?DBG_FORMAT(" ~p.~n", [_F]),
+ validate_3(labels(Is), Name, Arity, Entry, Mod, Ls1);
+validate_2({Ls1,Is}, Name, Arity, _Entry) ->
+ error({{'_',Name,Arity},{first(Is),length(Ls1),illegal_instruction}}).
+
+validate_3({Ls2,Is}, Name, Arity, Entry, Mod, Ls1) ->
+ lists:foreach(fun (_L) -> ?DBG_FORMAT(" ~p.~n", [_L]) end, Ls2),
+ Offset = 1 + length(Ls2),
+ case lists:member(Entry, Ls2) of
+ true ->
+ St = init_state(Arity),
+ Vst = #vst{current=St,
+ branched=gb_trees_from_list([{L,St} || L <- Ls1])},
+ valfun(Is, {Mod,Name,Arity}, Offset, Vst);
+ false ->
+ error({{Mod,Name,Arity},{first(Is),Offset,no_entry_label}})
+ end.
+
+first([X|_]) -> X;
+first([]) -> [].
+
+labels(Is) ->
+ labels_1(Is, []).
+
+labels_1([{label,L}|Is], R) ->
+ labels_1(Is, [L|R]);
+labels_1(Is, R) ->
+ {lists:reverse(R),Is}.
+
+init_state(Arity) ->
+ Xs = init_regs(Arity, term),
+ Ys = init_regs(0, initialized),
+ #st{x=Xs,y=Ys,numy=none,h=0,ct=[]}.
+
+init_regs(0, _) ->
+ gb_trees:empty();
+init_regs(N, Type) ->
+ gb_trees_from_list([{R,Type} || R <- lists:seq(0, N-1)]).
+
+valfun([], _MFA, _Offset, Vst) -> Vst;
+valfun([I|Is], MFA, Offset, Vst) ->
+ ?DBG_FORMAT(" ~p.\n", [I]),
+ valfun(Is, MFA, Offset+1,
+ try valfun_1(I, Vst)
+ catch Error ->
+ error({MFA,{I,Offset,Error}})
+ end).
+
+%% Instructions that are allowed in dead code or when failing,
+%% that is while the state is undecided in some way.
+valfun_1({label,Lbl}, #vst{current=St0,branched=B}=Vst) ->
+ St = merge_states(Lbl, St0, B),
+ Vst#vst{current=St,branched=gb_trees:enter(Lbl, St, B)};
+valfun_1(_I, #vst{current=none}=Vst) ->
+ %% Ignore instructions after erlang:error/1,2, which
+ %% the original R10B compiler thought would return.
+ ?DBG_FORMAT("Ignoring ~p\n", [_I]),
+ Vst;
+valfun_1({badmatch,Src}, Vst) ->
+ assert_term(Src, Vst),
+ kill_state(Vst);
+valfun_1({case_end,Src}, Vst) ->
+ assert_term(Src, Vst),
+ kill_state(Vst);
+valfun_1(if_end, Vst) ->
+ kill_state(Vst);
+valfun_1({try_case_end,Src}, Vst) ->
+ assert_term(Src, Vst),
+ kill_state(Vst);
+%% Instructions that can not cause exceptions
+valfun_1({move,Src,Dst}, Vst) ->
+ Type = get_term_type(Src, Vst),
+ set_type_reg(Type, Dst, Vst);
+valfun_1({fmove,Src,{fr,_}}, Vst) ->
+ assert_type(float, Src, Vst);
+valfun_1({fmove,{fr,_},Dst}, Vst) ->
+ set_type_reg({float,[]}, Dst, Vst);
+valfun_1({kill,{y,_}=Reg}, Vst) ->
+ set_type_y(initialized, Reg, Vst);
+valfun_1({test_heap,Heap,Live}, Vst) ->
+ test_heap(Heap, Live, Vst);
+valfun_1({bif,_Op,nofail,Src,Dst}, Vst) ->
+ validate_src(Src, Vst),
+ set_type_reg(term, Dst, Vst);
+%% Put instructions.
+valfun_1({put_list,A,B,Dst}, Vst0) ->
+ assert_term(A, Vst0),
+ assert_term(B, Vst0),
+ Vst = eat_heap(2, Vst0),
+ set_type_reg(cons, Dst, Vst);
+valfun_1({put_tuple,Sz,Dst}, Vst0) when is_integer(Sz) ->
+ Vst = eat_heap(1, Vst0),
+ set_type_reg({tuple,Sz}, Dst, Vst);
+valfun_1({put,Src}, Vst) ->
+ assert_term(Src, Vst),
+ eat_heap(1, Vst);
+valfun_1({put_string,Sz,_,Dst}, Vst0) when is_integer(Sz) ->
+ Vst = eat_heap(2*Sz, Vst0),
+ set_type_reg(cons, Dst, Vst);
+%% Allocate and deallocate, et.al
+valfun_1({allocate,Stk,Live}, Vst) ->
+ allocate(false, Stk, 0, Live, Vst);
+valfun_1({allocate_heap,Stk,Heap,Live}, Vst) ->
+ allocate(false, Stk, Heap, Live, Vst);
+valfun_1({allocate_zero,Stk,Live}, Vst) ->
+ allocate(true, Stk, 0, Live, Vst);
+valfun_1({allocate_heap_zero,Stk,Heap,Live}, Vst) ->
+ allocate(true, Stk, Heap, Live, Vst);
+valfun_1({init,{y,_}=Reg}, Vst) ->
+ set_type_y(initialized, Reg, Vst);
+valfun_1({deallocate,StkSize}, #vst{current=#st{numy=StkSize,ct=[]}}=Vst) ->
+ deallocate(Vst);
+valfun_1({deallocate,_}, #vst{current=#st{numy=NumY,ct=[]}}) ->
+ error({allocated,NumY});
+valfun_1({deallocate,_}, #vst{current=#st{ct=Fails}}) ->
+ error({catch_try_stack,Fails});
+%% Catch & try.
+valfun_1({'catch',Dst,{f,Fail}}, Vst0) when Fail /= none ->
+ Vst = #vst{current=#st{ct=Fails}=St} =
+ set_type_y({catchtag,Fail}, Dst, Vst0),
+ Vst#vst{current=St#st{ct=[Fail|Fails]}};
+valfun_1({'try',Dst,{f,Fail}}, Vst0) ->
+ Vst = #vst{current=#st{ct=Fails}=St} =
+ set_type_y({trytag,Fail}, Dst, Vst0),
+ Vst#vst{current=St#st{ct=[Fail|Fails]}};
+%% Do a postponed state branch if necessary and try next set of instructions
+valfun_1(I, #vst{current=#st{ct=[]}}=Vst) ->
+ valfun_2(I, Vst);
+valfun_1(I, #vst{current=#st{ct=Fails}}=Vst0) ->
+ %% Perform a postponed state branch
+ Vst = #vst{current=St} = lists:foldl(fun branch_state/2, Vst0, Fails),
+ valfun_2(I, Vst#vst{current=St#st{ct=[]}}).
+
+%% Instructions that can cause exceptions.
+valfun_2({apply,Live}, Vst) ->
+ call(Live+2, Vst);
+valfun_2({apply_last,Live,_}, Vst) ->
+ tail_call(Live+2, Vst);
+valfun_2({call_fun,Live}, Vst) ->
+ call(Live, Vst);
+valfun_2({call,Live,_}, Vst) ->
+ call(Live, Vst);
+valfun_2({call_ext,Live,Func}, Vst) ->
+ call(Func, Live, Vst);
+valfun_2({call_only,Live,_}, Vst) ->
+ tail_call(Live, Vst);
+valfun_2({call_ext_only,Live,_}, Vst) ->
+ tail_call(Live, Vst);
+valfun_2({call_last,Live,_,_}, Vst) ->
+ tail_call(Live, Vst);
+valfun_2({call_ext_last,Live,_,_}, Vst) ->
+ tail_call(Live, Vst);
+valfun_2({make_fun,_,_,Live}, Vst) ->
+ call(Live, Vst);
+valfun_2({make_fun2,_,_,_,Live}, Vst) ->
+ call(Live, Vst);
+%% Floating point.
+valfun_2({fconv,Src,{fr,_}}, Vst) ->
+ assert_term(Src, Vst);
+valfun_2({bif,fadd,_,[{fr,_},{fr,_}],{fr,_}}, Vst) ->
+ Vst;
+valfun_2({bif,fdiv,_,[{fr,_},{fr,_}],{fr,_}}, Vst) ->
+ Vst;
+valfun_2({bif,fmul,_,[{fr,_},{fr,_}],{fr,_}}, Vst) ->
+ Vst;
+valfun_2({bif,fnegate,_,[{fr,_}],{fr,_}}, Vst) ->
+ Vst;
+valfun_2({bif,fsub,_,[{fr,_},{fr,_}],{fr,_}}, Vst) ->
+ Vst;
+valfun_2(fclearerror, Vst) ->
+ Vst;
+valfun_2({fcheckerror,_}, Vst) ->
+ Vst;
+%% Other BIFs
+valfun_2({bif,element,{f,Fail},[Pos,Tuple],Dst}, Vst0) ->
+ TupleType0 = get_term_type(Tuple, Vst0),
+ PosType = get_term_type(Pos, Vst0),
+ Vst1 = branch_state(Fail, Vst0),
+ TupleType = upgrade_type({tuple,[get_tuple_size(PosType)]}, TupleType0),
+ Vst = set_type(TupleType, Tuple, Vst1),
+ set_type_reg(term, Dst, Vst);
+valfun_2({bif,Op,{f,Fail},Src,Dst}, Vst0) ->
+ validate_src(Src, Vst0),
+ Vst = branch_state(Fail, Vst0),
+ Type = bif_type(Op, Src, Vst),
+ set_type_reg(Type, Dst, Vst);
+valfun_2(return, #vst{current=#st{numy=none}}=Vst) ->
+ kill_state(Vst);
+valfun_2(return, #vst{current=#st{numy=NumY}}) ->
+ error({stack_frame,NumY});
+valfun_2({jump,{f,_}}, #vst{current=none}=Vst) ->
+ %% Must be an unreachable jump which was not optimized away.
+ %% Do nothing.
+ Vst;
+valfun_2({jump,{f,Lbl}}, Vst) ->
+ kill_state(branch_state(Lbl, Vst));
+valfun_2({loop_rec,{f,Fail},Dst}, Vst0) ->
+ Vst = branch_state(Fail, Vst0),
+ set_type_reg(term, Dst, Vst);
+valfun_2(remove_message, Vst) ->
+ Vst;
+valfun_2({wait,_}, Vst) ->
+ kill_state(Vst);
+valfun_2({wait_timeout,_,Src}, Vst) ->
+ assert_term(Src, Vst);
+valfun_2({loop_rec_end,_}, Vst) ->
+ kill_state(Vst);
+valfun_2(timeout, #vst{current=St}=Vst) ->
+ Vst#vst{current=St#st{x=init_regs(0, term)}};
+valfun_2(send, Vst) ->
+ call(2, Vst);
+%% Catch & try.
+valfun_2({catch_end,Reg}, Vst0) ->
+ case get_type(Reg, Vst0) of
+ {catchtag,_} ->
+ Vst = #vst{current=St} = set_type_reg(initialized, Reg, Vst0),
+ Xs = gb_trees_from_list([{0,term}]),
+ Vst#vst{current=St#st{x=Xs}};
+ Type ->
+ error({bad_type,Type})
+ end;
+valfun_2({try_end,Reg}, Vst) ->
+ case get_type(Reg, Vst) of
+ {trytag,_} ->
+ set_type_reg(initialized, Reg, Vst);
+ Type ->
+ error({bad_type,Type})
+ end;
+valfun_2({try_case,Reg}, Vst0) ->
+ case get_type(Reg, Vst0) of
+ {trytag,_} ->
+ Vst = #vst{current=St} = set_type_reg(initialized, Reg, Vst0),
+ Xs = gb_trees_from_list([{0,{atom,[]}},{1,term},{2,term}]),
+ Vst#vst{current=St#st{x=Xs}};
+ Type ->
+ error({bad_type,Type})
+ end;
+valfun_2({set_tuple_element,Src,Tuple,I}, Vst) ->
+ assert_term(Src, Vst),
+ assert_type({tuple_element,I+1}, Tuple, Vst);
+%% Match instructions.
+valfun_2({select_val,Src,{f,Fail},{list,Choices}}, Vst) ->
+ assert_term(Src, Vst),
+ Lbls = [L || {f,L} <- Choices]++[Fail],
+ kill_state(foldl(fun(L, S) -> branch_state(L, S) end, Vst, Lbls));
+valfun_2({select_tuple_arity,Tuple,{f,Fail},{list,Choices}}, Vst) ->
+ assert_type(tuple, Tuple, Vst),
+ kill_state(branch_arities(Choices, Tuple, branch_state(Fail, Vst)));
+valfun_2({get_list,Src,D1,D2}, Vst0) ->
+ assert_term(Src, Vst0),
+ Vst = set_type_reg(term, D1, Vst0),
+ set_type_reg(term, D2, Vst);
+valfun_2({get_tuple_element,Src,I,Dst}, Vst) ->
+ assert_type({tuple_element,I+1}, Src, Vst),
+ set_type_reg(term, Dst, Vst);
+valfun_2({bs_restore,_}, Vst) ->
+ Vst;
+valfun_2({bs_save,_}, Vst) ->
+ Vst;
+valfun_2({bs_start_match,{f,Fail},Src}, Vst) ->
+ assert_term(Src, Vst),
+ branch_state(Fail, Vst);
+valfun_2({test,bs_skip_bits,{f,Fail},[Src,_,_]}, Vst) ->
+ assert_term(Src, Vst),
+ branch_state(Fail, Vst);
+valfun_2({test,_,{f,Fail},[_,_,_,Dst]}, Vst0) ->
+ Vst = branch_state(Fail, Vst0),
+ set_type_reg({integer,[]}, Dst, Vst);
+valfun_2({test,bs_test_tail,{f,Fail},_}, Vst) ->
+ branch_state(Fail, Vst);
+%% Other test instructions.
+valfun_2({test,is_float,{f,Lbl},[Float]}, Vst0) ->
+ assert_term(Float, Vst0),
+ Vst = branch_state(Lbl, Vst0),
+ set_type({float,[]}, Float, Vst);
+valfun_2({test,is_tuple,{f,Lbl},[Tuple]}, Vst0) ->
+ assert_term(Tuple, Vst0),
+ Vst = branch_state(Lbl, Vst0),
+ set_type({tuple,[0]}, Tuple, Vst);
+valfun_2({test,test_arity,{f,Lbl},[Tuple,Sz]}, Vst0) when is_integer(Sz) ->
+ assert_type(tuple, Tuple, Vst0),
+ Vst = branch_state(Lbl, Vst0),
+ set_type_reg({tuple,Sz}, Tuple, Vst);
+valfun_2({test,_Op,{f,Lbl},Src}, Vst) ->
+ validate_src(Src, Vst),
+ branch_state(Lbl, Vst);
+valfun_2({bs_add,{f,Fail},[A,B,_],Dst}, Vst0) ->
+ assert_term(A, Vst0),
+ assert_term(B, Vst0),
+ Vst = branch_state(Fail, Vst0),
+ set_type_reg({integer,[]}, Dst, Vst);
+valfun_2({bs_bits_to_bytes,{f,Fail},Src,Dst}, Vst0) ->
+ assert_term(Src, Vst0),
+ Vst = branch_state(Fail, Vst0),
+ set_type_reg({integer,[]}, Dst, Vst);
+valfun_2({bs_init2,{f,Fail},_,Heap,_,_,Dst}, Vst0) ->
+ Vst1 = heap_alloc(Heap, Vst0),
+ Vst = branch_state(Fail, Vst1),
+ set_type_reg(binary, Dst, Vst);
+valfun_2({bs_put_string,Sz,_}, Vst) when is_integer(Sz) ->
+ Vst;
+valfun_2({bs_put_binary,{f,Fail},_,_,_,Src}, Vst0) ->
+ assert_term(Src, Vst0),
+ branch_state(Fail, Vst0);
+valfun_2({bs_put_float,{f,Fail},_,_,_,Src}, Vst0) ->
+ assert_term(Src, Vst0),
+ branch_state(Fail, Vst0);
+valfun_2({bs_put_integer,{f,Fail},_,_,_,Src}, Vst0) ->
+ assert_term(Src, Vst0),
+ branch_state(Fail, Vst0);
+%% Old bit syntax construction (before R10B).
+valfun_2({bs_init,_,_}, Vst) -> Vst;
+valfun_2({bs_need_buf,_}, Vst) -> Vst;
+valfun_2({bs_final,{f,Fail},Dst}, Vst0) ->
+ Vst = branch_state(Fail, Vst0),
+ set_type_reg(binary, Dst, Vst);
+%% Misc.
+valfun_2({'%live',Live}, Vst) ->
+ verify_live(Live, Vst),
+ Vst;
+valfun_2(_, _) ->
+ error(unknown_instruction).
+
+kill_state(#vst{current=#st{ct=[]}}=Vst) ->
+ Vst#vst{current=none};
+kill_state(#vst{current=#st{ct=Fails}}=Vst0) ->
+ Vst = lists:foldl(fun branch_state/2, Vst0, Fails),
+ Vst#vst{current=none}.
+
+%% A "plain" call.
+%% The stackframe must have a known size and be initialized.
+%% The instruction will return to the instruction following the call.
+call(Live, #vst{current=St}=Vst) ->
+ verify_live(Live, Vst),
+ verify_y_init(Vst),
+ Xs = gb_trees_from_list([{0,term}]),
+ Vst#vst{current=St#st{x=Xs}}.
+
+%% A "plain" call.
+%% The stackframe must have a known size and be initialized.
+%% The instruction will return to the instruction following the call.
+call(Name, Live, #vst{current=St}=Vst) ->
+ verify_live(Live, Vst),
+ case return_type(Name, Vst) of
+ exception ->
+ kill_state(Vst);
+ Type ->
+ verify_y_init(Vst),
+ Xs = gb_trees_from_list([{0,Type}]),
+ Vst#vst{current=St#st{x=Xs}}
+ end.
+
+%% Tail call.
+%% The stackframe must have a known size and be initialized.
+%% Does not return to the instruction following the call.
+tail_call(Live, Vst) ->
+ kill_state(call(Live, Vst)).
+
+allocate(Zero, Stk, Heap, Live, #vst{current=#st{numy=none}=St}=Vst) ->
+ verify_live(Live, Vst),
+ Ys = init_regs(case Zero of
+ true -> Stk;
+ false -> 0
+ end, initialized),
+ Vst#vst{current=St#st{y=Ys,numy=Stk,h=heap_alloc_1(Heap)}};
+allocate(_, _, _, _, #vst{current=#st{numy=Numy}}) ->
+ error({existing_stack_frame,{size,Numy}}).
+
+deallocate(#vst{current=St}=Vst) ->
+ Vst#vst{current=St#st{y=init_regs(0, initialized),numy=none}}.
+
+test_heap(Heap, Live, Vst) ->
+ verify_live(Live, Vst),
+ heap_alloc(Heap, Vst).
+
+heap_alloc(Heap, #vst{current=St}=Vst) ->
+ Vst#vst{current=St#st{h=heap_alloc_1(Heap)}}.
+
+heap_alloc_1({alloc,Alloc}) ->
+ {value,{_,Heap}} = lists:keysearch(words, 1, Alloc),
+ Heap;
+heap_alloc_1(Heap) when is_integer(Heap) -> Heap.
+
+
+set_type(Type, {x,_}=Reg, Vst) -> set_type_reg(Type, Reg, Vst);
+set_type(Type, {y,_}=Reg, Vst) -> set_type_y(Type, Reg, Vst);
+set_type(_, _, #vst{}=Vst) -> Vst.
+
+set_type_reg(Type, {x,X}, #vst{current=#st{x=Xs}=St}=Vst)
+ when 0 =< X, X < ?MAXREG ->
+ Vst#vst{current=St#st{x=gb_trees:enter(X, Type, Xs)}};
+set_type_reg(Type, Reg, Vst) ->
+ set_type_y(Type, Reg, Vst).
+
+set_type_y(Type, {y,Y}=Reg, #vst{current=#st{y=Ys,numy=NumY}=St}=Vst)
+ when is_integer(Y), 0 =< Y, Y < ?MAXREG ->
+ case {Y,NumY} of
+ {_,none} ->
+ error({no_stack_frame,Reg});
+ {_,_} when Y > NumY ->
+ error({y_reg_out_of_range,Reg,NumY});
+ {_,_} ->
+ Vst#vst{current=St#st{y=gb_trees:enter(Y, Type, Ys)}}
+ end;
+set_type_y(Type, Reg, #vst{}) -> error({invalid_store,Reg,Type}).
+
+assert_term(Src, Vst) ->
+ get_term_type(Src, Vst),
+ Vst.
+
+%% The possible types.
+%%
+%% First non-term types:
+%%
+%% initialized Only for Y registers. Means that the Y register
+%% has been initialized with some valid term so that
+%% it is safe to pass to the garbage collector.
+%% NOT safe to use in any other way (will not crash the
+%% emulator, but clearly points to a bug in the compiler).
+%%
+%% {catchtag,Lbl} A special term used within a catch. Must only be used
+%% by the catch instructions; NOT safe to use in other
+%% instructions.
+%%
+%% {trytag,Lbl} A special term used within a try block. Must only be
+%% used by the catch instructions; NOT safe to use in other
+%% instructions.
+%%
+%% exception Can only be used as a type returned by return_type/2
+%% (which gives the type of the value returned by a BIF).
+%% Thus 'exception' is never stored as type descriptor
+%% for a register.
+%%
+%% Normal terms:
+%%
+%% term Any valid Erlang (but not of the special types above).
+%%
+%% bool The atom 'true' or the atom 'false'.
+%%
+%% cons Cons cell: [_|_]
+%%
+%% nil Empty list: []
+%%
+%% {tuple,[Sz]} Tuple. An element has been accessed using
+%% element/2 or setelement/3 so that it is known that
+%% the type is a tuple of size at least Sz.
+%%
+%% {tuple,Sz} Tuple. A test_arity instruction has been seen
+%% so that it is known that the size is exactly Sz.
+%%
+%% {atom,[]} Atom.
+%% {atom,Atom}
+%%
+%% {integer,[]} Integer.
+%% {integer,Integer}
+%%
+%% {float,[]} Float.
+%% {float,Float}
+%%
+%% number Integer or Float of unknown value
+%%
+
+assert_type(WantedType, Term, Vst) ->
+ assert_type(WantedType, get_type(Term, Vst)),
+ Vst.
+
+assert_type(float, {float,_}) -> ok;
+assert_type(tuple, {tuple,_}) -> ok;
+assert_type({tuple_element,I}, {tuple,[Sz]})
+ when 1 =< I, I =< Sz ->
+ ok;
+assert_type({tuple_element,I}, {tuple,Sz})
+ when is_integer(Sz), 1 =< I, I =< Sz ->
+ ok;
+assert_type(Needed, Actual) ->
+ error({bad_type,{needed,Needed},{actual,Actual}}).
+
+%% upgrade_type/2 is used when linear code finds out more and
+%% more information about a type, so the type gets "narrower"
+%% or perhaps inconsistent. In the case of inconsistency
+%% we mostly widen the type to 'term' to make subsequent
+%% code fail if it assumes anything about the type.
+
+upgrade_type(Same, Same) -> Same;
+upgrade_type(term, OldT) -> OldT;
+upgrade_type(NewT, term) -> NewT;
+upgrade_type({Type,New}=NewT, {Type,Old}=OldT)
+ when Type == atom; Type == integer; Type == float ->
+ if New =:= Old -> OldT;
+ New =:= [] -> OldT;
+ Old =:= [] -> NewT;
+ true -> term
+ end;
+upgrade_type({Type,_}=NewT, number)
+ when Type == integer; Type == float ->
+ NewT;
+upgrade_type(number, {Type,_}=OldT)
+ when Type == integer; Type == float ->
+ OldT;
+upgrade_type(bool, {atom,A}) ->
+ upgrade_bool(A);
+upgrade_type({atom,A}, bool) ->
+ upgrade_bool(A);
+upgrade_type({tuple,[Sz]}, {tuple,[OldSz]})
+ when is_integer(Sz) ->
+ {tuple,[max(Sz, OldSz)]};
+upgrade_type({tuple,Sz}=T, {tuple,[_]})
+ when is_integer(Sz) ->
+ %% This also takes care of the user error when a tuple element
+ %% is accesed outside the known exact tuple size; there is
+ %% no more type information, just a runtime error which is not
+ %% our problem.
+ T;
+upgrade_type({tuple,[Sz]}, {tuple,_}=T)
+ when is_integer(Sz) ->
+ %% Same as the previous clause but mirrored.
+ T;
+upgrade_type(_A, _B) ->
+ %%io:format("upgrade_type: ~p ~p\n", [_A,_B]),
+ term.
+
+upgrade_bool([]) -> bool;
+upgrade_bool(true) -> {atom,true};
+upgrade_bool(false) -> {atom,false};
+upgrade_bool(_) -> term.
+
+get_tuple_size({integer,[]}) -> 0;
+get_tuple_size({integer,Sz}) -> Sz;
+get_tuple_size(_) -> 0.
+
+validate_src(Ss, Vst) when is_list(Ss) ->
+ foldl(fun(S, _) -> get_type(S, Vst) end, ok, Ss).
+
+get_term_type(Src, Vst) ->
+ case get_type(Src, Vst) of
+ initialized -> error({not_assigned,Src});
+ exception -> error({exception,Src});
+ {catchtag,_} -> error({catchtag,Src});
+ {trytag,_} -> error({trytag,Src});
+ Type -> Type
+ end.
+
+get_type(nil=T, _) -> T;
+get_type({atom,A}=T, _) when is_atom(A) -> T;
+get_type({float,F}=T, _) when is_float(F) -> T;
+get_type({integer,I}=T, _) when is_integer(I) -> T;
+get_type({x,X}=Reg, #vst{current=#st{x=Xs}}) when is_integer(X) ->
+ case gb_trees:lookup(X, Xs) of
+ {value,Type} -> Type;
+ none -> error({uninitialized_reg,Reg})
+ end;
+get_type({y,Y}=Reg, #vst{current=#st{y=Ys}}) when is_integer(Y) ->
+ case gb_trees:lookup(Y, Ys) of
+ {value,initialized} -> error({unassigned_reg,Reg});
+ {value,Type} -> Type;
+ none -> error({uninitialized_reg,Reg})
+ end;
+get_type(Src, _) -> error({bad_source,Src}).
+
+branch_arities([], _, #vst{}=Vst) -> Vst;
+branch_arities([Sz,{f,L}|T], Tuple, #vst{current=St}=Vst0)
+ when is_integer(Sz) ->
+ Vst1 = set_type_reg({tuple,Sz}, Tuple, Vst0),
+ Vst = branch_state(L, Vst1),
+ branch_arities(T, Tuple, Vst#vst{current=St}).
+
+branch_state(0, #vst{}=Vst) -> Vst;
+branch_state(L, #vst{current=St,branched=B}=Vst) ->
+ Vst#vst{
+ branched=case gb_trees:is_defined(L, B) of
+ false ->
+ gb_trees:insert(L, St#st{ct=[]}, B);
+ true ->
+ MergedSt = merge_states(L, St, B),
+ gb_trees:update(L, MergedSt#st{ct=[]}, B)
+ end}.
+
+%% merge_states/3 is used when there are more than one way to arrive
+%% at this point, and the type states for the different paths has
+%% to be merged. The type states are downgraded to the least common
+%% subset for the subsequent code.
+
+merge_states(0, St, _Branched) -> St;
+merge_states(L, St, Branched) ->
+ case gb_trees:lookup(L, Branched) of
+ none -> St;
+ {value,OtherSt} when St == none -> OtherSt;
+ {value,OtherSt} ->
+ merge_states_1(St, OtherSt)
+ end.
+
+merge_states_1(#st{x=Xs0,y=Ys0,numy=NumY0,h=H0}=St,
+ #st{x=Xs1,y=Ys1,numy=NumY1,h=H1}) ->
+ NumY = merge_stk(NumY0, NumY1),
+ Xs = merge_regs(Xs0, Xs1),
+ Ys = merge_regs(Ys0, Ys1),
+ St#st{x=Xs,y=Ys,numy=NumY,h=min(H0, H1)}.
+
+merge_stk(S, S) -> S;
+merge_stk(_, _) -> undecided.
+
+merge_regs(Rs0, Rs1) ->
+ Rs = merge_regs_1(gb_trees:to_list(Rs0), gb_trees:to_list(Rs1)),
+ gb_trees_from_list(Rs).
+
+merge_regs_1([Same|Rs1], [Same|Rs2]) ->
+ [Same|merge_regs_1(Rs1, Rs2)];
+merge_regs_1([{R1,_}|Rs1], [{R2,_}|_]=Rs2) when R1 < R2 ->
+ merge_regs_1(Rs1, Rs2);
+merge_regs_1([{R1,_}|_]=Rs1, [{R2,_}|Rs2]) when R1 > R2 ->
+ merge_regs_1(Rs1, Rs2);
+merge_regs_1([{R,Type1}|Rs1], [{R,Type2}|Rs2]) ->
+ [{R,merge_types(Type1, Type2)}|merge_regs_1(Rs1, Rs2)];
+merge_regs_1([], []) -> [];
+merge_regs_1([], [_|_]) -> [];
+merge_regs_1([_|_], []) -> [].
+
+merge_types(T, T) -> T;
+merge_types(initialized=I, _) -> I;
+merge_types(_, initialized=I) -> I;
+merge_types({tuple,Same}=T, {tuple,Same}) -> T;
+merge_types({tuple,A}, {tuple,B}) ->
+ {tuple,[min(tuple_sz(A), tuple_sz(B))]};
+merge_types({Type,A}, {Type,B})
+ when Type == atom; Type == integer; Type == float ->
+ if A =:= B -> {Type,A};
+ true -> {Type,[]}
+ end;
+merge_types({Type,_}, number)
+ when Type == integer; Type == float ->
+ number;
+merge_types(number, {Type,_})
+ when Type == integer; Type == float ->
+ number;
+merge_types(bool, {atom,A}) ->
+ merge_bool(A);
+merge_types({atom,A}, bool) ->
+ merge_bool(A);
+merge_types(_, _) -> term.
+
+tuple_sz([Sz]) -> Sz;
+tuple_sz(Sz) -> Sz.
+
+merge_bool([]) -> {atom,[]};
+merge_bool(true) -> bool;
+merge_bool(false) -> bool;
+merge_bool(_) -> {atom,[]}.
+
+verify_y_init(#vst{current=#st{numy=none}}) -> ok;
+verify_y_init(#vst{current=#st{numy=undecided}}) ->
+ error(unknown_size_of_stackframe);
+verify_y_init(#vst{current=#st{y=Ys,numy=NumY}}) ->
+ verify_y_init_1(NumY, Ys).
+
+verify_y_init_1(0, _) -> ok;
+verify_y_init_1(N, Ys) ->
+ Y = N-1,
+ case gb_trees:is_defined(Y, Ys) of
+ false -> error({{y,Y},not_initialized});
+ true -> verify_y_init_1(Y, Ys)
+ end.
+
+verify_live(0, #vst{}) -> ok;
+verify_live(N, #vst{current=#st{x=Xs}}) ->
+ verify_live_1(N, Xs).
+
+verify_live_1(0, _) -> ok;
+verify_live_1(N, Xs) ->
+ X = N-1,
+ case gb_trees:is_defined(X, Xs) of
+ false -> error({{x,X},not_live});
+ true -> verify_live_1(X, Xs)
+ end.
+
+eat_heap(N, #vst{current=#st{h=Heap0}=St}=Vst) ->
+ case Heap0-N of
+ Neg when Neg < 0 ->
+ error({heap_overflow,{left,Heap0},{wanted,N}});
+ Heap ->
+ Vst#vst{current=St#st{h=Heap}}
+ end.
+
+bif_type('-', Src, Vst) ->
+ arith_type(Src, Vst);
+bif_type('+', Src, Vst) ->
+ arith_type(Src, Vst);
+bif_type('*', Src, Vst) ->
+ arith_type(Src, Vst);
+bif_type(abs, [Num], Vst) ->
+ case get_type(Num, Vst) of
+ {float,_}=T -> T;
+ {integer,_}=T -> T;
+ _ -> number
+ end;
+bif_type(float, _, _) -> {float,[]};
+bif_type('/', _, _) -> {float,[]};
+%% Integer operations.
+bif_type('div', [_,_], _) -> {integer,[]};
+bif_type('rem', [_,_], _) -> {integer,[]};
+bif_type(length, [_], _) -> {integer,[]};
+bif_type(size, [_], _) -> {integer,[]};
+bif_type(trunc, [_], _) -> {integer,[]};
+bif_type(round, [_], _) -> {integer,[]};
+bif_type('band', [_,_], _) -> {integer,[]};
+bif_type('bor', [_,_], _) -> {integer,[]};
+bif_type('bxor', [_,_], _) -> {integer,[]};
+bif_type('bnot', [_], _) -> {integer,[]};
+bif_type('bsl', [_,_], _) -> {integer,[]};
+bif_type('bsr', [_,_], _) -> {integer,[]};
+%% Booleans.
+bif_type('==', [_,_], _) -> bool;
+bif_type('/=', [_,_], _) -> bool;
+bif_type('=<', [_,_], _) -> bool;
+bif_type('<', [_,_], _) -> bool;
+bif_type('>=', [_,_], _) -> bool;
+bif_type('>', [_,_], _) -> bool;
+bif_type('=:=', [_,_], _) -> bool;
+bif_type('=/=', [_,_], _) -> bool;
+bif_type('not', [_], _) -> bool;
+bif_type('and', [_,_], _) -> bool;
+bif_type('or', [_,_], _) -> bool;
+bif_type('xor', [_,_], _) -> bool;
+bif_type(is_atom, [_], _) -> bool;
+bif_type(is_boolean, [_], _) -> bool;
+bif_type(is_binary, [_], _) -> bool;
+bif_type(is_constant, [_], _) -> bool;
+bif_type(is_float, [_], _) -> bool;
+bif_type(is_function, [_], _) -> bool;
+bif_type(is_integer, [_], _) -> bool;
+bif_type(is_list, [_], _) -> bool;
+bif_type(is_number, [_], _) -> bool;
+bif_type(is_pid, [_], _) -> bool;
+bif_type(is_port, [_], _) -> bool;
+bif_type(is_reference, [_], _) -> bool;
+bif_type(is_tuple, [_], _) -> bool;
+%% Misc.
+bif_type(node, [], _) -> {atom,[]};
+bif_type(node, [_], _) -> {atom,[]};
+bif_type(hd, [_], _) -> term;
+bif_type(tl, [_], _) -> term;
+bif_type(get, [_], _) -> term;
+bif_type(raise, [_,_], _) -> exception;
+bif_type(_, _, _) -> term.
+
+arith_type([A,B], Vst) ->
+ case {get_type(A, Vst),get_type(B, Vst)} of
+ {{float,_},_} -> {float,[]};
+ {_,{float,_}} -> {float,[]};
+ {_,_} -> number
+ end;
+arith_type(_, _) -> number.
+
+return_type({extfunc,M,F,A}, Vst) ->
+ return_type_1(M, F, A, Vst).
+
+return_type_1(erlang, setelement, 3, Vst) ->
+ Tuple = {x,1},
+ TupleType =
+ case get_type(Tuple, Vst) of
+ {tuple,_}=TT -> TT;
+ _ -> {tuple,[0]}
+ end,
+ case get_type({x,0}, Vst) of
+ {integer,[]} -> TupleType;
+ {integer,I} -> upgrade_type({tuple,[I]}, TupleType);
+ _ -> TupleType
+ end;
+return_type_1(erlang, F, A, _) ->
+ return_type_erl(F, A);
+return_type_1(math, F, A, _) ->
+ return_type_math(F, A);
+return_type_1(_, _, _, _) -> term.
+
+return_type_erl(exit, 1) -> exception;
+return_type_erl(throw, 1) -> exception;
+return_type_erl(fault, 1) -> exception;
+return_type_erl(fault, 2) -> exception;
+return_type_erl(error, 1) -> exception;
+return_type_erl(error, 2) -> exception;
+return_type_erl(_, _) -> term.
+
+return_type_math(cos, 1) -> {float,[]};
+return_type_math(cosh, 1) -> {float,[]};
+return_type_math(sin, 1) -> {float,[]};
+return_type_math(sinh, 1) -> {float,[]};
+return_type_math(tan, 1) -> {float,[]};
+return_type_math(tanh, 1) -> {float,[]};
+return_type_math(acos, 1) -> {float,[]};
+return_type_math(acosh, 1) -> {float,[]};
+return_type_math(asin, 1) -> {float,[]};
+return_type_math(asinh, 1) -> {float,[]};
+return_type_math(atan, 1) -> {float,[]};
+return_type_math(atanh, 1) -> {float,[]};
+return_type_math(erf, 1) -> {float,[]};
+return_type_math(erfc, 1) -> {float,[]};
+return_type_math(exp, 1) -> {float,[]};
+return_type_math(log, 1) -> {float,[]};
+return_type_math(log10, 1) -> {float,[]};
+return_type_math(sqrt, 1) -> {float,[]};
+return_type_math(atan2, 2) -> {float,[]};
+return_type_math(pow, 2) -> {float,[]};
+return_type_math(pi, 0) -> {float,[]};
+return_type_math(_, _) -> term.
+
+min(A, B) when is_integer(A), is_integer(B), A < B -> A;
+min(A, B) when is_integer(A), is_integer(B) -> B.
+
+max(A, B) when is_integer(A), is_integer(B), A > B -> A;
+max(A, B) when is_integer(A), is_integer(B) -> B.
+
+gb_trees_from_list(L) -> gb_trees:from_orddict(orddict:from_list(L)).
+
+-ifdef(DEBUG).
+error(Error) -> exit(Error).
+-else.
+error(Error) -> throw(Error).
+-endif.
diff --git a/lib/dialyzer/test/options1_tests_SUITE_data/src/compiler/cerl.erl b/lib/dialyzer/test/options1_tests_SUITE_data/src/compiler/cerl.erl
new file mode 100644
index 0000000000..be9e088276
--- /dev/null
+++ b/lib/dialyzer/test/options1_tests_SUITE_data/src/compiler/cerl.erl
@@ -0,0 +1,4169 @@
+%% ``The contents of this file are subject to the Erlang Public License,
+%% Version 1.1, (the "License"); you may not use this file except in
+%% compliance with the License. You should have received a copy of the
+%% Erlang Public License along with this software. If not, it can be
+%% retrieved via the world wide web at http://www.erlang.org/.
+%%
+%% Software distributed under the License is distributed on an "AS IS"
+%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
+%% the License for the specific language governing rights and limitations
+%% under the License.
+%%
+%% The Initial Developer of the Original Code is Richard Carlsson.
+%% Copyright (C) 1999-2002 Richard Carlsson.
+%% Portions created by Ericsson are Copyright 2001, Ericsson Utvecklings
+%% AB. All Rights Reserved.''
+%%
+%% $Id: cerl.erl,v 1.3 2010/03/04 13:54:20 maria Exp $
+
+%% =====================================================================
+%% @doc Core Erlang abstract syntax trees.
+%%
+%% <p> This module defines an abstract data type for representing Core
+%% Erlang source code as syntax trees.</p>
+%%
+%% <p>A recommended starting point for the first-time user is the
+%% documentation of the function <a
+%% href="#type-1"><code>type/1</code></a>.</p>
+%%
+%% <h3><b>NOTES:</b></h3>
+%%
+%% <p>This module deals with the composition and decomposition of
+%% <em>syntactic</em> entities (as opposed to semantic ones); its
+%% purpose is to hide all direct references to the data structures
+%% used to represent these entities. With few exceptions, the
+%% functions in this module perform no semantic interpretation of
+%% their inputs, and in general, the user is assumed to pass
+%% type-correct arguments - if this is not done, the effects are not
+%% defined.</p>
+%%
+%% <p>The internal representations of abstract syntax trees are
+%% subject to change without notice, and should not be documented
+%% outside this module. Furthermore, we do not give any guarantees on
+%% how an abstract syntax tree may or may not be represented, <em>with
+%% the following exceptions</em>: no syntax tree is represented by a
+%% single atom, such as <code>none</code>, by a list constructor
+%% <code>[X | Y]</code>, or by the empty list <code>[]</code>. This
+%% can be relied on when writing functions that operate on syntax
+%% trees.</p>
+%%
+%% @type cerl(). An abstract Core Erlang syntax tree.
+%%
+%% <p>Every abstract syntax tree has a <em>type</em>, given by the
+%% function <a href="#type-1"><code>type/1</code></a>. In addition,
+%% each syntax tree has a list of <em>user annotations</em> (cf. <a
+%% href="#get_ann-1"><code>get_ann/1</code></a>), which are included
+%% in the Core Erlang syntax.</p>
+
+-module(cerl).
+
+-export([abstract/1, add_ann/2, alias_pat/1, alias_var/1,
+ ann_abstract/2, ann_c_alias/3, ann_c_apply/3, ann_c_atom/2,
+ ann_c_call/4, ann_c_case/3, ann_c_catch/2, ann_c_char/2,
+ ann_c_clause/3, ann_c_clause/4, ann_c_cons/3, ann_c_float/2,
+ ann_c_fname/3, ann_c_fun/3, ann_c_int/2, ann_c_let/4,
+ ann_c_letrec/3, ann_c_module/4, ann_c_module/5, ann_c_nil/1,
+ ann_c_cons_skel/3, ann_c_tuple_skel/2, ann_c_primop/3,
+ ann_c_receive/2, ann_c_receive/4, ann_c_seq/3, ann_c_string/2,
+ ann_c_try/6, ann_c_tuple/2, ann_c_values/2, ann_c_var/2,
+ ann_make_data/3, ann_make_list/2, ann_make_list/3,
+ ann_make_data_skel/3, ann_make_tree/3, apply_args/1,
+ apply_arity/1, apply_op/1, atom_lit/1, atom_name/1, atom_val/1,
+ c_alias/2, c_apply/2, c_atom/1, c_call/3, c_case/2, c_catch/1,
+ c_char/1, c_clause/2, c_clause/3, c_cons/2, c_float/1,
+ c_fname/2, c_fun/2, c_int/1, c_let/3, c_letrec/2, c_module/3,
+ c_module/4, c_nil/0, c_cons_skel/2, c_tuple_skel/1, c_primop/2,
+ c_receive/1, c_receive/3, c_seq/2, c_string/1, c_try/5,
+ c_tuple/1, c_values/1, c_var/1, call_args/1, call_arity/1,
+ call_module/1, call_name/1, case_arg/1, case_arity/1,
+ case_clauses/1, catch_body/1, char_lit/1, char_val/1,
+ clause_arity/1, clause_body/1, clause_guard/1, clause_pats/1,
+ clause_vars/1, concrete/1, cons_hd/1, cons_tl/1, copy_ann/2,
+ data_arity/1, data_es/1, data_type/1, float_lit/1, float_val/1,
+ fname_arity/1, fname_id/1, fold_literal/1, from_records/1,
+ fun_arity/1, fun_body/1, fun_vars/1, get_ann/1, int_lit/1,
+ int_val/1, is_c_alias/1, is_c_apply/1, is_c_atom/1,
+ is_c_call/1, is_c_case/1, is_c_catch/1, is_c_char/1,
+ is_c_clause/1, is_c_cons/1, is_c_float/1, is_c_fname/1,
+ is_c_fun/1, is_c_int/1, is_c_let/1, is_c_letrec/1, is_c_list/1,
+ is_c_module/1, is_c_nil/1, is_c_primop/1, is_c_receive/1,
+ is_c_seq/1, is_c_string/1, is_c_try/1, is_c_tuple/1,
+ is_c_values/1, is_c_var/1, is_data/1, is_leaf/1, is_literal/1,
+ is_literal_term/1, is_print_char/1, is_print_string/1,
+ let_arg/1, let_arity/1, let_body/1, let_vars/1, letrec_body/1,
+ letrec_defs/1, letrec_vars/1, list_elements/1, list_length/1,
+ make_data/2, make_list/1, make_list/2, make_data_skel/2,
+ make_tree/2, meta/1, module_attrs/1, module_defs/1,
+ module_exports/1, module_name/1, module_vars/1,
+ pat_list_vars/1, pat_vars/1, primop_args/1, primop_arity/1,
+ primop_name/1, receive_action/1, receive_clauses/1,
+ receive_timeout/1, seq_arg/1, seq_body/1, set_ann/2,
+ string_lit/1, string_val/1, subtrees/1, to_records/1,
+ try_arg/1, try_body/1, try_vars/1, try_evars/1, try_handler/1,
+ tuple_arity/1, tuple_es/1, type/1, unfold_literal/1,
+ update_c_alias/3, update_c_apply/3, update_c_call/4,
+ update_c_case/3, update_c_catch/2, update_c_clause/4,
+ update_c_cons/3, update_c_cons_skel/3, update_c_fname/2,
+ update_c_fname/3, update_c_fun/3, update_c_let/4,
+ update_c_letrec/3, update_c_module/5, update_c_primop/3,
+ update_c_receive/4, update_c_seq/3, update_c_try/6,
+ update_c_tuple/2, update_c_tuple_skel/2, update_c_values/2,
+ update_c_var/2, update_data/3, update_list/2, update_list/3,
+ update_data_skel/3, update_tree/2, update_tree/3,
+ values_arity/1, values_es/1, var_name/1, c_binary/1,
+ update_c_binary/2, ann_c_binary/2, is_c_binary/1,
+ binary_segments/1, c_bitstr/3, c_bitstr/4, c_bitstr/5,
+ update_c_bitstr/5, update_c_bitstr/6, ann_c_bitstr/5,
+ ann_c_bitstr/6, is_c_bitstr/1, bitstr_val/1, bitstr_size/1,
+ bitstr_bitsize/1, bitstr_unit/1, bitstr_type/1,
+ bitstr_flags/1]).
+
+-include("core_parse.hrl").
+
+
+%% =====================================================================
+%% Representation (general)
+%%
+%% All nodes are represented by tuples of arity 2 or (generally)
+%% greater, whose first element is an atom which uniquely identifies the
+%% type of the node, and whose second element is a (proper) list of
+%% annotation terms associated with the node - this is by default empty.
+%%
+%% For most node constructor functions, there are analogous functions
+%% named 'ann_...', taking one extra argument 'As' (always the first
+%% argument), specifying an annotation list at node creation time.
+%% Similarly, there are also functions named 'update_...', taking one
+%% extra argument 'Old', specifying a node from which all fields not
+%% explicitly given as arguments should be copied (generally, this is
+%% the annotation field only).
+%% =====================================================================
+
+%% This defines the general representation of constant literals:
+
+-record(literal, {ann = [], val}).
+
+
+%% @spec type(Node::cerl()) -> atom()
+%%
+%% @doc Returns the type tag of <code>Node</code>. Current node types
+%% are:
+%%
+%% <p><center><table border="1">
+%% <tr>
+%% <td>alias</td>
+%% <td>apply</td>
+%% <td>binary</td>
+%% <td>bitstr</td>
+%% <td>call</td>
+%% <td>case</td>
+%% <td>catch</td>
+%% </tr><tr>
+%% <td>clause</td>
+%% <td>cons</td>
+%% <td>fun</td>
+%% <td>let</td>
+%% <td>letrec</td>
+%% <td>literal</td>
+%% <td>module</td>
+%% </tr><tr>
+%% <td>primop</td>
+%% <td>receive</td>
+%% <td>seq</td>
+%% <td>try</td>
+%% <td>tuple</td>
+%% <td>values</td>
+%% <td>var</td>
+%% </tr>
+%% </table></center></p>
+%%
+%% <p>Note: The name of the primary constructor function for a node
+%% type is always the name of the type itself, prefixed by
+%% "<code>c_</code>"; recognizer predicates are correspondingly
+%% prefixed by "<code>is_c_</code>". Furthermore, to simplify
+%% preservation of annotations (cf. <code>get_ann/1</code>), there are
+%% analogous constructor functions prefixed by "<code>ann_c_</code>"
+%% and "<code>update_c_</code>", for setting the annotation list of
+%% the new node to either a specific value or to the annotations of an
+%% existing node, respectively.</p>
+%%
+%% @see abstract/1
+%% @see c_alias/2
+%% @see c_apply/2
+%% @see c_binary/1
+%% @see c_bitstr/5
+%% @see c_call/3
+%% @see c_case/2
+%% @see c_catch/1
+%% @see c_clause/3
+%% @see c_cons/2
+%% @see c_fun/2
+%% @see c_let/3
+%% @see c_letrec/2
+%% @see c_module/3
+%% @see c_primop/2
+%% @see c_receive/1
+%% @see c_seq/2
+%% @see c_try/3
+%% @see c_tuple/1
+%% @see c_values/1
+%% @see c_var/1
+%% @see get_ann/1
+%% @see to_records/1
+%% @see from_records/1
+%% @see data_type/1
+%% @see subtrees/1
+%% @see meta/1
+
+type(Node) ->
+ element(1, Node).
+
+
+%% @spec is_leaf(Node::cerl()) -> boolean()
+%%
+%% @doc Returns <code>true</code> if <code>Node</code> is a leaf node,
+%% otherwise <code>false</code>. The current leaf node types are
+%% <code>literal</code> and <code>var</code>.
+%%
+%% <p>Note: all literals (cf. <code>is_literal/1</code>) are leaf
+%% nodes, even if they represent structured (constant) values such as
+%% <code>{foo, [bar, baz]}</code>. Also note that variables are leaf
+%% nodes but not literals.</p>
+%%
+%% @see type/1
+%% @see is_literal/1
+
+is_leaf(Node) ->
+ case type(Node) of
+ literal -> true;
+ var -> true;
+ _ -> false
+ end.
+
+
+%% @spec get_ann(cerl()) -> [term()]
+%%
+%% @doc Returns the list of user annotations associated with a syntax
+%% tree node. For a newly created node, this is the empty list. The
+%% annotations may be any terms.
+%%
+%% @see set_ann/2
+
+get_ann(Node) ->
+ element(2, Node).
+
+
+%% @spec set_ann(Node::cerl(), Annotations::[term()]) -> cerl()
+%%
+%% @doc Sets the list of user annotations of <code>Node</code> to
+%% <code>Annotations</code>.
+%%
+%% @see get_ann/1
+%% @see add_ann/2
+%% @see copy_ann/2
+
+set_ann(Node, List) ->
+ setelement(2, Node, List).
+
+
+%% @spec add_ann(Annotations::[term()], Node::cerl()) -> cerl()
+%%
+%% @doc Appends <code>Annotations</code> to the list of user
+%% annotations of <code>Node</code>.
+%%
+%% <p>Note: this is equivalent to <code>set_ann(Node, Annotations ++
+%% get_ann(Node))</code>, but potentially more efficient.</p>
+%%
+%% @see get_ann/1
+%% @see set_ann/2
+
+add_ann(Terms, Node) ->
+ set_ann(Node, Terms ++ get_ann(Node)).
+
+
+%% @spec copy_ann(Source::cerl(), Target::cerl()) -> cerl()
+%%
+%% @doc Copies the list of user annotations from <code>Source</code>
+%% to <code>Target</code>.
+%%
+%% <p>Note: this is equivalent to <code>set_ann(Target,
+%% get_ann(Source))</code>, but potentially more efficient.</p>
+%%
+%% @see get_ann/1
+%% @see set_ann/2
+
+copy_ann(Source, Target) ->
+ set_ann(Target, get_ann(Source)).
+
+
+%% @spec abstract(Term::term()) -> cerl()
+%%
+%% @doc Creates a syntax tree corresponding to an Erlang term.
+%% <code>Term</code> must be a literal term, i.e., one that can be
+%% represented as a source code literal. Thus, it may not contain a
+%% process identifier, port, reference, binary or function value as a
+%% subterm.
+%%
+%% <p>Note: This is a constant time operation.</p>
+%%
+%% @see ann_abstract/2
+%% @see concrete/1
+%% @see is_literal/1
+%% @see is_literal_term/1
+
+abstract(T) ->
+ #literal{val = T}.
+
+
+%% @spec ann_abstract(Annotations::[term()], Term::term()) -> cerl()
+%% @see abstract/1
+
+ann_abstract(As, T) ->
+ #literal{val = T, ann = As}.
+
+
+%% @spec is_literal_term(Term::term()) -> boolean()
+%%
+%% @doc Returns <code>true</code> if <code>Term</code> can be
+%% represented as a literal, otherwise <code>false</code>. This
+%% function takes time proportional to the size of <code>Term</code>.
+%%
+%% @see abstract/1
+
+is_literal_term(T) when integer(T) -> true;
+is_literal_term(T) when float(T) -> true;
+is_literal_term(T) when atom(T) -> true;
+is_literal_term([]) -> true;
+is_literal_term([H | T]) ->
+ case is_literal_term(H) of
+ true ->
+ is_literal_term(T);
+ false ->
+ false
+ end;
+is_literal_term(T) when tuple(T) ->
+ is_literal_term_list(tuple_to_list(T));
+is_literal_term(_) ->
+ false.
+
+is_literal_term_list([T | Ts]) ->
+ case is_literal_term(T) of
+ true ->
+ is_literal_term_list(Ts);
+ false ->
+ false
+ end;
+is_literal_term_list([]) ->
+ true.
+
+
+%% @spec concrete(Node::cerl()) -> term()
+%%
+%% @doc Returns the Erlang term represented by a syntax tree. An
+%% exception is thrown if <code>Node</code> does not represent a
+%% literal term.
+%%
+%% <p>Note: This is a constant time operation.</p>
+%%
+%% @see abstract/1
+%% @see is_literal/1
+
+%% Because the normal tuple and list constructor operations always
+%% return a literal if the arguments are literals, 'concrete' and
+%% 'is_literal' never need to traverse the structure.
+
+concrete(#literal{val = V}) ->
+ V.
+
+
+%% @spec is_literal(Node::cerl()) -> boolean()
+%%
+%% @doc Returns <code>true</code> if <code>Node</code> represents a
+%% literal term, otherwise <code>false</code>. This function returns
+%% <code>true</code> if and only if the value of
+%% <code>concrete(Node)</code> is defined.
+%%
+%% <p>Note: This is a constant time operation.</p>
+%%
+%% @see abstract/1
+%% @see concrete/1
+%% @see fold_literal/1
+
+is_literal(#literal{}) ->
+ true;
+is_literal(_) ->
+ false.
+
+
+%% @spec fold_literal(Node::cerl()) -> cerl()
+%%
+%% @doc Assures that literals have a compact representation. This is
+%% occasionally useful if <code>c_cons_skel/2</code>,
+%% <code>c_tuple_skel/1</code> or <code>unfold_literal/1</code> were
+%% used in the construction of <code>Node</code>, and you want to revert
+%% to the normal "folded" representation of literals. If
+%% <code>Node</code> represents a tuple or list constructor, its
+%% elements are rewritten recursively, and the node is reconstructed
+%% using <code>c_cons/2</code> or <code>c_tuple/1</code>, respectively;
+%% otherwise, <code>Node</code> is not changed.
+%%
+%% @see is_literal/1
+%% @see c_cons_skel/2
+%% @see c_tuple_skel/1
+%% @see c_cons/2
+%% @see c_tuple/1
+%% @see unfold_literal/1
+
+fold_literal(Node) ->
+ case type(Node) of
+ tuple ->
+ update_c_tuple(Node, fold_literal_list(tuple_es(Node)));
+ cons ->
+ update_c_cons(Node, fold_literal(cons_hd(Node)),
+ fold_literal(cons_tl(Node)));
+ _ ->
+ Node
+ end.
+
+fold_literal_list([E | Es]) ->
+ [fold_literal(E) | fold_literal_list(Es)];
+fold_literal_list([]) ->
+ [].
+
+
+%% @spec unfold_literal(Node::cerl()) -> cerl()
+%%
+%% @doc Assures that literals have a fully expanded representation. If
+%% <code>Node</code> represents a literal tuple or list constructor, its
+%% elements are rewritten recursively, and the node is reconstructed
+%% using <code>c_cons_skel/2</code> or <code>c_tuple_skel/1</code>,
+%% respectively; otherwise, <code>Node</code> is not changed. The {@link
+%% fold_literal/1} can be used to revert to the normal compact
+%% representation.
+%%
+%% @see is_literal/1
+%% @see c_cons_skel/2
+%% @see c_tuple_skel/1
+%% @see c_cons/2
+%% @see c_tuple/1
+%% @see fold_literal/1
+
+unfold_literal(Node) ->
+ case type(Node) of
+ literal ->
+ copy_ann(Node, unfold_concrete(concrete(Node)));
+ _ ->
+ Node
+ end.
+
+unfold_concrete(Val) ->
+ case Val of
+ _ when tuple(Val) ->
+ c_tuple_skel(unfold_concrete_list(tuple_to_list(Val)));
+ [H|T] ->
+ c_cons_skel(unfold_concrete(H), unfold_concrete(T));
+ _ ->
+ abstract(Val)
+ end.
+
+unfold_concrete_list([E | Es]) ->
+ [unfold_concrete(E) | unfold_concrete_list(Es)];
+unfold_concrete_list([]) ->
+ [].
+
+
+%% ---------------------------------------------------------------------
+
+-record(module, {ann = [], name, exports, attrs, defs}).
+
+
+%% @spec c_module(Name::cerl(), Exports, Definitions) -> cerl()
+%%
+%% Exports = [cerl()]
+%% Definitions = [{cerl(), cerl()}]
+%%
+%% @equiv c_module(Name, Exports, [], Definitions)
+
+c_module(Name, Exports, Es) ->
+ #module{name = Name, exports = Exports, attrs = [], defs = Es}.
+
+
+%% @spec c_module(Name::cerl(), Exports, Attributes, Definitions) ->
+%% cerl()
+%%
+%% Exports = [cerl()]
+%% Attributes = [{cerl(), cerl()}]
+%% Definitions = [{cerl(), cerl()}]
+%%
+%% @doc Creates an abstract module definition. The result represents
+%% <pre>
+%% module <em>Name</em> [<em>E1</em>, ..., <em>Ek</em>]
+%% attributes [<em>K1</em> = <em>T1</em>, ...,
+%% <em>Km</em> = <em>Tm</em>]
+%% <em>V1</em> = <em>F1</em>
+%% ...
+%% <em>Vn</em> = <em>Fn</em>
+%% end</pre>
+%%
+%% if <code>Exports</code> = <code>[E1, ..., Ek]</code>,
+%% <code>Attributes</code> = <code>[{K1, T1}, ..., {Km, Tm}]</code>,
+%% and <code>Definitions</code> = <code>[{V1, F1}, ..., {Vn,
+%% Fn}]</code>.
+%%
+%% <p><code>Name</code> and all the <code>Ki</code> must be atom
+%% literals, and all the <code>Ti</code> must be constant literals. All
+%% the <code>Vi</code> and <code>Ei</code> must have type
+%% <code>var</code> and represent function names. All the
+%% <code>Fi</code> must have type <code>'fun'</code>.</p>
+%%
+%% @see c_module/3
+%% @see module_name/1
+%% @see module_exports/1
+%% @see module_attrs/1
+%% @see module_defs/1
+%% @see module_vars/1
+%% @see ann_c_module/4
+%% @see ann_c_module/5
+%% @see update_c_module/5
+%% @see c_atom/1
+%% @see c_var/1
+%% @see c_fun/2
+%% @see is_literal/1
+
+c_module(Name, Exports, Attrs, Es) ->
+ #module{name = Name, exports = Exports, attrs = Attrs, defs = Es}.
+
+
+%% @spec ann_c_module(As::[term()], Name::cerl(), Exports,
+%% Definitions) -> cerl()
+%%
+%% Exports = [cerl()]
+%% Definitions = [{cerl(), cerl()}]
+%%
+%% @see c_module/3
+%% @see ann_c_module/5
+
+ann_c_module(As, Name, Exports, Es) ->
+ #module{name = Name, exports = Exports, attrs = [], defs = Es,
+ ann = As}.
+
+
+%% @spec ann_c_module(As::[term()], Name::cerl(), Exports,
+%% Attributes, Definitions) -> cerl()
+%%
+%% Exports = [cerl()]
+%% Attributes = [{cerl(), cerl()}]
+%% Definitions = [{cerl(), cerl()}]
+%%
+%% @see c_module/4
+%% @see ann_c_module/4
+
+ann_c_module(As, Name, Exports, Attrs, Es) ->
+ #module{name = Name, exports = Exports, attrs = Attrs, defs = Es,
+ ann = As}.
+
+
+%% @spec update_c_module(Old::cerl(), Name::cerl(), Exports,
+%% Attributes, Definitions) -> cerl()
+%%
+%% Exports = [cerl()]
+%% Attributes = [{cerl(), cerl()}]
+%% Definitions = [{cerl(), cerl()}]
+%%
+%% @see c_module/4
+
+update_c_module(Node, Name, Exports, Attrs, Es) ->
+ #module{name = Name, exports = Exports, attrs = Attrs, defs = Es,
+ ann = get_ann(Node)}.
+
+
+%% @spec is_c_module(Node::cerl()) -> boolean()
+%%
+%% @doc Returns <code>true</code> if <code>Node</code> is an abstract
+%% module definition, otherwise <code>false</code>.
+%%
+%% @see type/1
+
+is_c_module(#module{}) ->
+ true;
+is_c_module(_) ->
+ false.
+
+
+%% @spec module_name(Node::cerl()) -> cerl()
+%%
+%% @doc Returns the name subtree of an abstract module definition.
+%%
+%% @see c_module/4
+
+module_name(Node) ->
+ Node#module.name.
+
+
+%% @spec module_exports(Node::cerl()) -> [cerl()]
+%%
+%% @doc Returns the list of exports subtrees of an abstract module
+%% definition.
+%%
+%% @see c_module/4
+
+module_exports(Node) ->
+ Node#module.exports.
+
+
+%% @spec module_attrs(Node::cerl()) -> [{cerl(), cerl()}]
+%%
+%% @doc Returns the list of pairs of attribute key/value subtrees of
+%% an abstract module definition.
+%%
+%% @see c_module/4
+
+module_attrs(Node) ->
+ Node#module.attrs.
+
+
+%% @spec module_defs(Node::cerl()) -> [{cerl(), cerl()}]
+%%
+%% @doc Returns the list of function definitions of an abstract module
+%% definition.
+%%
+%% @see c_module/4
+
+module_defs(Node) ->
+ Node#module.defs.
+
+
+%% @spec module_vars(Node::cerl()) -> [cerl()]
+%%
+%% @doc Returns the list of left-hand side function variable subtrees
+%% of an abstract module definition.
+%%
+%% @see c_module/4
+
+module_vars(Node) ->
+ [F || {F, _} <- module_defs(Node)].
+
+
+%% ---------------------------------------------------------------------
+
+%% @spec c_int(Value::integer()) -> cerl()
+%%
+%%
+%% @doc Creates an abstract integer literal. The lexical
+%% representation is the canonical decimal numeral of
+%% <code>Value</code>.
+%%
+%% @see ann_c_int/2
+%% @see is_c_int/1
+%% @see int_val/1
+%% @see int_lit/1
+%% @see c_char/1
+
+c_int(Value) ->
+ #literal{val = Value}.
+
+
+%% @spec ann_c_int(As::[term()], Value::integer()) -> cerl()
+%% @see c_int/1
+
+ann_c_int(As, Value) ->
+ #literal{val = Value, ann = As}.
+
+
+%% @spec is_c_int(Node::cerl()) -> boolean()
+%%
+%% @doc Returns <code>true</code> if <code>Node</code> represents an
+%% integer literal, otherwise <code>false</code>.
+%% @see c_int/1
+
+is_c_int(#literal{val = V}) when integer(V) ->
+ true;
+is_c_int(_) ->
+ false.
+
+
+%% @spec int_val(cerl()) -> integer()
+%%
+%% @doc Returns the value represented by an integer literal node.
+%% @see c_int/1
+
+int_val(Node) ->
+ Node#literal.val.
+
+
+%% @spec int_lit(cerl()) -> string()
+%%
+%% @doc Returns the numeral string represented by an integer literal
+%% node.
+%% @see c_int/1
+
+int_lit(Node) ->
+ integer_to_list(int_val(Node)).
+
+
+%% ---------------------------------------------------------------------
+
+%% @spec c_float(Value::float()) -> cerl()
+%%
+%% @doc Creates an abstract floating-point literal. The lexical
+%% representation is the decimal floating-point numeral of
+%% <code>Value</code>.
+%%
+%% @see ann_c_float/2
+%% @see is_c_float/1
+%% @see float_val/1
+%% @see float_lit/1
+
+%% Note that not all floating-point numerals can be represented with
+%% full precision.
+
+c_float(Value) ->
+ #literal{val = Value}.
+
+
+%% @spec ann_c_float(As::[term()], Value::float()) -> cerl()
+%% @see c_float/1
+
+ann_c_float(As, Value) ->
+ #literal{val = Value, ann = As}.
+
+
+%% @spec is_c_float(Node::cerl()) -> boolean()
+%%
+%% @doc Returns <code>true</code> if <code>Node</code> represents a
+%% floating-point literal, otherwise <code>false</code>.
+%% @see c_float/1
+
+is_c_float(#literal{val = V}) when float(V) ->
+ true;
+is_c_float(_) ->
+ false.
+
+
+%% @spec float_val(cerl()) -> float()
+%%
+%% @doc Returns the value represented by a floating-point literal
+%% node.
+%% @see c_float/1
+
+float_val(Node) ->
+ Node#literal.val.
+
+
+%% @spec float_lit(cerl()) -> string()
+%%
+%% @doc Returns the numeral string represented by a floating-point
+%% literal node.
+%% @see c_float/1
+
+float_lit(Node) ->
+ float_to_list(float_val(Node)).
+
+
+%% ---------------------------------------------------------------------
+
+%% @spec c_atom(Name) -> cerl()
+%% Name = atom() | string()
+%%
+%% @doc Creates an abstract atom literal. The print name of the atom
+%% is the character sequence represented by <code>Name</code>.
+%%
+%% <p>Note: passing a string as argument to this function causes a
+%% corresponding atom to be created for the internal representation.</p>
+%%
+%% @see ann_c_atom/2
+%% @see is_c_atom/1
+%% @see atom_val/1
+%% @see atom_name/1
+%% @see atom_lit/1
+
+c_atom(Name) when atom(Name) ->
+ #literal{val = Name};
+c_atom(Name) ->
+ #literal{val = list_to_atom(Name)}.
+
+
+%% @spec ann_c_atom(As::[term()], Name) -> cerl()
+%% Name = atom() | string()
+%% @see c_atom/1
+
+ann_c_atom(As, Name) when atom(Name) ->
+ #literal{val = Name, ann = As};
+ann_c_atom(As, Name) ->
+ #literal{val = list_to_atom(Name), ann = As}.
+
+
+%% @spec is_c_atom(Node::cerl()) -> boolean()
+%%
+%% @doc Returns <code>true</code> if <code>Node</code> represents an
+%% atom literal, otherwise <code>false</code>.
+%%
+%% @see c_atom/1
+
+is_c_atom(#literal{val = V}) when atom(V) ->
+ true;
+is_c_atom(_) ->
+ false.
+
+%% @spec atom_val(cerl())-> atom()
+%%
+%% @doc Returns the value represented by an abstract atom.
+%%
+%% @see c_atom/1
+
+atom_val(Node) ->
+ Node#literal.val.
+
+
+%% @spec atom_name(cerl()) -> string()
+%%
+%% @doc Returns the printname of an abstract atom.
+%%
+%% @see c_atom/1
+
+atom_name(Node) ->
+ atom_to_list(atom_val(Node)).
+
+
+%% @spec atom_lit(cerl()) -> string()
+%%
+%% @doc Returns the literal string represented by an abstract
+%% atom. This always includes surrounding single-quote characters.
+%%
+%% <p>Note that an abstract atom may have several literal
+%% representations, and that the representation yielded by this
+%% function is not fixed; e.g.,
+%% <code>atom_lit(c_atom("a\012b"))</code> could yield the string
+%% <code>"\'a\\nb\'"</code>.</p>
+%%
+%% @see c_atom/1
+
+%% TODO: replace the use of the unofficial 'write_string/2'.
+
+atom_lit(Node) ->
+ io_lib:write_string(atom_name(Node), $'). %' stupid Emacs.
+
+
+%% ---------------------------------------------------------------------
+
+%% @spec c_char(Value) -> cerl()
+%%
+%% Value = char() | integer()
+%%
+%% @doc Creates an abstract character literal. If the local
+%% implementation of Erlang defines <code>char()</code> as a subset of
+%% <code>integer()</code>, this function is equivalent to
+%% <code>c_int/1</code>. Otherwise, if the given value is an integer,
+%% it will be converted to the character with the corresponding
+%% code. The lexical representation of a character is
+%% "<code>$<em>Char</em></code>", where <code>Char</code> is a single
+%% printing character or an escape sequence.
+%%
+%% @see c_int/1
+%% @see c_string/1
+%% @see ann_c_char/2
+%% @see is_c_char/1
+%% @see char_val/1
+%% @see char_lit/1
+%% @see is_print_char/1
+
+c_char(Value) when integer(Value), Value >= 0 ->
+ #literal{val = Value}.
+
+
+%% @spec ann_c_char(As::[term()], Value::char()) -> cerl()
+%% @see c_char/1
+
+ann_c_char(As, Value) ->
+ #literal{val = Value, ann = As}.
+
+
+%% @spec is_c_char(Node::cerl()) -> boolean()
+%%
+%% @doc Returns <code>true</code> if <code>Node</code> may represent a
+%% character literal, otherwise <code>false</code>.
+%%
+%% <p>If the local implementation of Erlang defines
+%% <code>char()</code> as a subset of <code>integer()</code>, then
+%% <code>is_c_int(<em>Node</em>)</code> will also yield
+%% <code>true</code>.</p>
+%%
+%% @see c_char/1
+%% @see is_print_char/1
+
+is_c_char(#literal{val = V}) when integer(V), V >= 0 ->
+ is_char_value(V);
+is_c_char(_) ->
+ false.
+
+
+%% @spec is_print_char(Node::cerl()) -> boolean()
+%%
+%% @doc Returns <code>true</code> if <code>Node</code> may represent a
+%% "printing" character, otherwise <code>false</code>. (Cf.
+%% <code>is_c_char/1</code>.) A "printing" character has either a
+%% given graphical representation, or a "named" escape sequence such
+%% as "<code>\n</code>". Currently, only ISO 8859-1 (Latin-1)
+%% character values are recognized.
+%%
+%% @see c_char/1
+%% @see is_c_char/1
+
+is_print_char(#literal{val = V}) when integer(V), V >= 0 ->
+ is_print_char_value(V);
+is_print_char(_) ->
+ false.
+
+
+%% @spec char_val(cerl()) -> char()
+%%
+%% @doc Returns the value represented by an abstract character literal.
+%%
+%% @see c_char/1
+
+char_val(Node) ->
+ Node#literal.val.
+
+
+%% @spec char_lit(cerl()) -> string()
+%%
+%% @doc Returns the literal string represented by an abstract
+%% character. This includes a leading <code>$</code>
+%% character. Currently, all characters that are not in the set of ISO
+%% 8859-1 (Latin-1) "printing" characters will be escaped.
+%%
+%% @see c_char/1
+
+char_lit(Node) ->
+ io_lib:write_char(char_val(Node)).
+
+
+%% ---------------------------------------------------------------------
+
+%% @spec c_string(Value::string()) -> cerl()
+%%
+%% @doc Creates an abstract string literal. Equivalent to creating an
+%% abstract list of the corresponding character literals
+%% (cf. <code>is_c_string/1</code>), but is typically more
+%% efficient. The lexical representation of a string is
+%% "<code>"<em>Chars</em>"</code>", where <code>Chars</code> is a
+%% sequence of printing characters or spaces.
+%%
+%% @see c_char/1
+%% @see ann_c_string/2
+%% @see is_c_string/1
+%% @see string_val/1
+%% @see string_lit/1
+%% @see is_print_string/1
+
+c_string(Value) ->
+ #literal{val = Value}.
+
+
+%% @spec ann_c_string(As::[term()], Value::string()) -> cerl()
+%% @see c_string/1
+
+ann_c_string(As, Value) ->
+ #literal{val = Value, ann = As}.
+
+
+%% @spec is_c_string(Node::cerl()) -> boolean()
+%%
+%% @doc Returns <code>true</code> if <code>Node</code> may represent a
+%% string literal, otherwise <code>false</code>. Strings are defined
+%% as lists of characters; see <code>is_c_char/1</code> for details.
+%%
+%% @see c_string/1
+%% @see is_c_char/1
+%% @see is_print_string/1
+
+is_c_string(#literal{val = V}) ->
+ is_char_list(V);
+is_c_string(_) ->
+ false.
+
+
+%% @spec is_print_string(Node::cerl()) -> boolean()
+%%
+%% @doc Returns <code>true</code> if <code>Node</code> may represent a
+%% string literal containing only "printing" characters, otherwise
+%% <code>false</code>. See <code>is_c_string/1</code> and
+%% <code>is_print_char/1</code> for details. Currently, only ISO
+%% 8859-1 (Latin-1) character values are recognized.
+%%
+%% @see c_string/1
+%% @see is_c_string/1
+%% @see is_print_char/1
+
+is_print_string(#literal{val = V}) ->
+ is_print_char_list(V);
+is_print_string(_) ->
+ false.
+
+
+%% @spec string_val(cerl()) -> string()
+%%
+%% @doc Returns the value represented by an abstract string literal.
+%%
+%% @see c_string/1
+
+string_val(Node) ->
+ Node#literal.val.
+
+
+%% @spec string_lit(cerl()) -> string()
+%%
+%% @doc Returns the literal string represented by an abstract string.
+%% This includes surrounding double-quote characters
+%% <code>"..."</code>. Currently, characters that are not in the set
+%% of ISO 8859-1 (Latin-1) "printing" characters will be escaped,
+%% except for spaces.
+%%
+%% @see c_string/1
+
+string_lit(Node) ->
+ io_lib:write_string(string_val(Node)).
+
+
+%% ---------------------------------------------------------------------
+
+%% @spec c_nil() -> cerl()
+%%
+%% @doc Creates an abstract empty list. The result represents
+%% "<code>[]</code>". The empty list is traditionally called "nil".
+%%
+%% @see ann_c_nil/1
+%% @see is_c_list/1
+%% @see c_cons/2
+
+c_nil() ->
+ #literal{val = []}.
+
+
+%% @spec ann_c_nil(As::[term()]) -> cerl()
+%% @see c_nil/0
+
+ann_c_nil(As) ->
+ #literal{val = [], ann = As}.
+
+
+%% @spec is_c_nil(Node::cerl()) -> boolean()
+%%
+%% @doc Returns <code>true</code> if <code>Node</code> is an abstract
+%% empty list, otherwise <code>false</code>.
+
+is_c_nil(#literal{val = []}) ->
+ true;
+is_c_nil(_) ->
+ false.
+
+
+%% ---------------------------------------------------------------------
+
+%% @spec c_cons(Head::cerl(), Tail::cerl()) -> cerl()
+%%
+%% @doc Creates an abstract list constructor. The result represents
+%% "<code>[<em>Head</em> | <em>Tail</em>]</code>". Note that if both
+%% <code>Head</code> and <code>Tail</code> have type
+%% <code>literal</code>, then the result will also have type
+%% <code>literal</code>, and annotations on <code>Head</code> and
+%% <code>Tail</code> are lost.
+%%
+%% <p>Recall that in Erlang, the tail element of a list constructor is
+%% not necessarily a list.</p>
+%%
+%% @see ann_c_cons/3
+%% @see update_c_cons/3
+%% @see c_cons_skel/2
+%% @see is_c_cons/1
+%% @see cons_hd/1
+%% @see cons_tl/1
+%% @see is_c_list/1
+%% @see c_nil/0
+%% @see list_elements/1
+%% @see list_length/1
+%% @see make_list/2
+
+-record(cons, {ann = [], hd, tl}).
+
+%% *Always* collapse literals.
+
+c_cons(#literal{val = Head}, #literal{val = Tail}) ->
+ #literal{val = [Head | Tail]};
+c_cons(Head, Tail) ->
+ #cons{hd = Head, tl = Tail}.
+
+
+%% @spec ann_c_cons(As::[term()], Head::cerl(), Tail::cerl()) -> cerl()
+%% @see c_cons/2
+
+ann_c_cons(As, #literal{val = Head}, #literal{val = Tail}) ->
+ #literal{val = [Head | Tail], ann = As};
+ann_c_cons(As, Head, Tail) ->
+ #cons{hd = Head, tl = Tail, ann = As}.
+
+
+%% @spec update_c_cons(Old::cerl(), Head::cerl(), Tail::cerl()) ->
+%% cerl()
+%% @see c_cons/2
+
+update_c_cons(Node, #literal{val = Head}, #literal{val = Tail}) ->
+ #literal{val = [Head | Tail], ann = get_ann(Node)};
+update_c_cons(Node, Head, Tail) ->
+ #cons{hd = Head, tl = Tail, ann = get_ann(Node)}.
+
+
+%% @spec c_cons_skel(Head::cerl(), Tail::cerl()) -> cerl()
+%%
+%% @doc Creates an abstract list constructor skeleton. Does not fold
+%% constant literals, i.e., the result always has type
+%% <code>cons</code>, representing "<code>[<em>Head</em> |
+%% <em>Tail</em>]</code>".
+%%
+%% <p>This function is occasionally useful when it is necessary to have
+%% annotations on the subnodes of a list constructor node, even when the
+%% subnodes are constant literals. Note however that
+%% <code>is_literal/1</code> will yield <code>false</code> and
+%% <code>concrete/1</code> will fail if passed the result from this
+%% function.</p>
+%%
+%% <p><code>fold_literal/1</code> can be used to revert a node to the
+%% normal-form representation.</p>
+%%
+%% @see ann_c_cons_skel/3
+%% @see update_c_cons_skel/3
+%% @see c_cons/2
+%% @see is_c_cons/1
+%% @see is_c_list/1
+%% @see c_nil/0
+%% @see is_literal/1
+%% @see fold_literal/1
+%% @see concrete/1
+
+%% *Never* collapse literals.
+
+c_cons_skel(Head, Tail) ->
+ #cons{hd = Head, tl = Tail}.
+
+
+%% @spec ann_c_cons_skel(As::[term()], Head::cerl(), Tail::cerl()) ->
+%% cerl()
+%% @see c_cons_skel/2
+
+ann_c_cons_skel(As, Head, Tail) ->
+ #cons{hd = Head, tl = Tail, ann = As}.
+
+
+%% @spec update_c_cons_skel(Old::cerl(), Head::cerl(), Tail::cerl()) ->
+%% cerl()
+%% @see c_cons_skel/2
+
+update_c_cons_skel(Node, Head, Tail) ->
+ #cons{hd = Head, tl = Tail, ann = get_ann(Node)}.
+
+
+%% @spec is_c_cons(Node::cerl()) -> boolean()
+%%
+%% @doc Returns <code>true</code> if <code>Node</code> is an abstract
+%% list constructor, otherwise <code>false</code>.
+
+is_c_cons(#cons{}) ->
+ true;
+is_c_cons(#literal{val = [_ | _]}) ->
+ true;
+is_c_cons(_) ->
+ false.
+
+
+%% @spec cons_hd(cerl()) -> cerl()
+%%
+%% @doc Returns the head subtree of an abstract list constructor.
+%%
+%% @see c_cons/2
+
+cons_hd(#cons{hd = Head}) ->
+ Head;
+cons_hd(#literal{val = [Head | _]}) ->
+ #literal{val = Head}.
+
+
+%% @spec cons_tl(cerl()) -> cerl()
+%%
+%% @doc Returns the tail subtree of an abstract list constructor.
+%%
+%% <p>Recall that the tail does not necessarily represent a proper
+%% list.</p>
+%%
+%% @see c_cons/2
+
+cons_tl(#cons{tl = Tail}) ->
+ Tail;
+cons_tl(#literal{val = [_ | Tail]}) ->
+ #literal{val = Tail}.
+
+
+%% @spec is_c_list(Node::cerl()) -> boolean()
+%%
+%% @doc Returns <code>true</code> if <code>Node</code> represents a
+%% proper list, otherwise <code>false</code>. A proper list is either
+%% the empty list <code>[]</code>, or a cons cell <code>[<em>Head</em> |
+%% <em>Tail</em>]</code>, where recursively <code>Tail</code> is a
+%% proper list.
+%%
+%% <p>Note: Because <code>Node</code> is a syntax tree, the actual
+%% run-time values corresponding to its subtrees may often be partially
+%% or completely unknown. Thus, if <code>Node</code> represents e.g.
+%% "<code>[... | Ns]</code>" (where <code>Ns</code> is a variable), then
+%% the function will return <code>false</code>, because it is not known
+%% whether <code>Ns</code> will be bound to a list at run-time. If
+%% <code>Node</code> instead represents e.g. "<code>[1, 2, 3]</code>" or
+%% "<code>[A | []]</code>", then the function will return
+%% <code>true</code>.</p>
+%%
+%% @see c_cons/2
+%% @see c_nil/0
+%% @see list_elements/1
+%% @see list_length/1
+
+is_c_list(#cons{tl = Tail}) ->
+ is_c_list(Tail);
+is_c_list(#literal{val = V}) ->
+ is_proper_list(V);
+is_c_list(_) ->
+ false.
+
+is_proper_list([_ | Tail]) ->
+ is_proper_list(Tail);
+is_proper_list([]) ->
+ true;
+is_proper_list(_) ->
+ false.
+
+%% @spec list_elements(cerl()) -> [cerl()]
+%%
+%% @doc Returns the list of element subtrees of an abstract list.
+%% <code>Node</code> must represent a proper list. E.g., if
+%% <code>Node</code> represents "<code>[<em>X1</em>, <em>X2</em> |
+%% [<em>X3</em>, <em>X4</em> | []]</code>", then
+%% <code>list_elements(Node)</code> yields the list <code>[X1, X2, X3,
+%% X4]</code>.
+%%
+%% @see c_cons/2
+%% @see c_nil/1
+%% @see is_c_list/1
+%% @see list_length/1
+%% @see make_list/2
+
+list_elements(#cons{hd = Head, tl = Tail}) ->
+ [Head | list_elements(Tail)];
+list_elements(#literal{val = V}) ->
+ abstract_list(V).
+
+abstract_list([X | Xs]) ->
+ [abstract(X) | abstract_list(Xs)];
+abstract_list([]) ->
+ [].
+
+
+%% @spec list_length(Node::cerl()) -> integer()
+%%
+%% @doc Returns the number of element subtrees of an abstract list.
+%% <code>Node</code> must represent a proper list. E.g., if
+%% <code>Node</code> represents "<code>[X1 | [X2, X3 | [X4, X5,
+%% X6]]]</code>", then <code>list_length(Node)</code> returns the
+%% integer 6.
+%%
+%% <p>Note: this is equivalent to
+%% <code>length(list_elements(Node))</code>, but potentially more
+%% efficient.</p>
+%%
+%% @see c_cons/2
+%% @see c_nil/1
+%% @see is_c_list/1
+%% @see list_elements/1
+
+list_length(L) ->
+ list_length(L, 0).
+
+list_length(#cons{tl = Tail}, A) ->
+ list_length(Tail, A + 1);
+list_length(#literal{val = V}, A) ->
+ A + length(V).
+
+
+%% @spec make_list(List) -> Node
+%% @equiv make_list(List, none)
+
+make_list(List) ->
+ ann_make_list([], List).
+
+
+%% @spec make_list(List::[cerl()], Tail) -> cerl()
+%%
+%% Tail = cerl() | none
+%%
+%% @doc Creates an abstract list from the elements in <code>List</code>
+%% and the optional <code>Tail</code>. If <code>Tail</code> is
+%% <code>none</code>, the result will represent a nil-terminated list,
+%% otherwise it represents "<code>[... | <em>Tail</em>]</code>".
+%%
+%% @see c_cons/2
+%% @see c_nil/0
+%% @see ann_make_list/3
+%% @see update_list/3
+%% @see list_elements/1
+
+make_list(List, Tail) ->
+ ann_make_list([], List, Tail).
+
+
+%% @spec update_list(Old::cerl(), List::[cerl()]) -> cerl()
+%% @equiv update_list(Old, List, none)
+
+update_list(Node, List) ->
+ ann_make_list(get_ann(Node), List).
+
+
+%% @spec update_list(Old::cerl(), List::[cerl()], Tail) -> cerl()
+%%
+%% Tail = cerl() | none
+%%
+%% @see make_list/2
+%% @see update_list/2
+
+update_list(Node, List, Tail) ->
+ ann_make_list(get_ann(Node), List, Tail).
+
+
+%% @spec ann_make_list(As::[term()], List::[cerl()]) -> cerl()
+%% @equiv ann_make_list(As, List, none)
+
+ann_make_list(As, List) ->
+ ann_make_list(As, List, none).
+
+
+%% @spec ann_make_list(As::[term()], List::[cerl()], Tail) -> cerl()
+%%
+%% Tail = cerl() | none
+%%
+%% @see make_list/2
+%% @see ann_make_list/2
+
+ann_make_list(As, [H | T], Tail) ->
+ ann_c_cons(As, H, make_list(T, Tail)); % `c_cons' folds literals
+ann_make_list(As, [], none) ->
+ ann_c_nil(As);
+ann_make_list(_, [], Node) ->
+ Node.
+
+
+%% ---------------------------------------------------------------------
+
+%% @spec c_tuple(Elements::[cerl()]) -> cerl()
+%%
+%% @doc Creates an abstract tuple. If <code>Elements</code> is
+%% <code>[E1, ..., En]</code>, the result represents
+%% "<code>{<em>E1</em>, ..., <em>En</em>}</code>". Note that if all
+%% nodes in <code>Elements</code> have type <code>literal</code>, or if
+%% <code>Elements</code> is empty, then the result will also have type
+%% <code>literal</code> and annotations on nodes in
+%% <code>Elements</code> are lost.
+%%
+%% <p>Recall that Erlang has distinct 1-tuples, i.e., <code>{X}</code>
+%% is always distinct from <code>X</code> itself.</p>
+%%
+%% @see ann_c_tuple/2
+%% @see update_c_tuple/2
+%% @see is_c_tuple/1
+%% @see tuple_es/1
+%% @see tuple_arity/1
+%% @see c_tuple_skel/1
+
+-record(tuple, {ann = [], es}).
+
+%% *Always* collapse literals.
+
+c_tuple(Es) ->
+ case is_lit_list(Es) of
+ false ->
+ #tuple{es = Es};
+ true ->
+ #literal{val = list_to_tuple(lit_list_vals(Es))}
+ end.
+
+
+%% @spec ann_c_tuple(As::[term()], Elements::[cerl()]) -> cerl()
+%% @see c_tuple/1
+
+ann_c_tuple(As, Es) ->
+ case is_lit_list(Es) of
+ false ->
+ #tuple{es = Es, ann = As};
+ true ->
+ #literal{val = list_to_tuple(lit_list_vals(Es)), ann = As}
+ end.
+
+
+%% @spec update_c_tuple(Old::cerl(), Elements::[cerl()]) -> cerl()
+%% @see c_tuple/1
+
+update_c_tuple(Node, Es) ->
+ case is_lit_list(Es) of
+ false ->
+ #tuple{es = Es, ann = get_ann(Node)};
+ true ->
+ #literal{val = list_to_tuple(lit_list_vals(Es)),
+ ann = get_ann(Node)}
+ end.
+
+
+%% @spec c_tuple_skel(Elements::[cerl()]) -> cerl()
+%%
+%% @doc Creates an abstract tuple skeleton. Does not fold constant
+%% literals, i.e., the result always has type <code>tuple</code>,
+%% representing "<code>{<em>E1</em>, ..., <em>En</em>}</code>", if
+%% <code>Elements</code> is <code>[E1, ..., En]</code>.
+%%
+%% <p>This function is occasionally useful when it is necessary to have
+%% annotations on the subnodes of a tuple node, even when all the
+%% subnodes are constant literals. Note however that
+%% <code>is_literal/1</code> will yield <code>false</code> and
+%% <code>concrete/1</code> will fail if passed the result from this
+%% function.</p>
+%%
+%% <p><code>fold_literal/1</code> can be used to revert a node to the
+%% normal-form representation.</p>
+%%
+%% @see ann_c_tuple_skel/2
+%% @see update_c_tuple_skel/2
+%% @see c_tuple/1
+%% @see tuple_es/1
+%% @see is_c_tuple/1
+%% @see is_literal/1
+%% @see fold_literal/1
+%% @see concrete/1
+
+%% *Never* collapse literals.
+
+c_tuple_skel(Es) ->
+ #tuple{es = Es}.
+
+
+%% @spec ann_c_tuple_skel(As::[term()], Elements::[cerl()]) -> cerl()
+%% @see c_tuple_skel/1
+
+ann_c_tuple_skel(As, Es) ->
+ #tuple{es = Es, ann = As}.
+
+
+%% @spec update_c_tuple_skel(Old::cerl(), Elements::[cerl()]) -> cerl()
+%% @see c_tuple_skel/1
+
+update_c_tuple_skel(Old, Es) ->
+ #tuple{es = Es, ann = get_ann(Old)}.
+
+
+%% @spec is_c_tuple(Node::cerl()) -> boolean()
+%%
+%% @doc Returns <code>true</code> if <code>Node</code> is an abstract
+%% tuple, otherwise <code>false</code>.
+%%
+%% @see c_tuple/1
+
+is_c_tuple(#tuple{}) ->
+ true;
+is_c_tuple(#literal{val = V}) when tuple(V) ->
+ true;
+is_c_tuple(_) ->
+ false.
+
+
+%% @spec tuple_es(cerl()) -> [cerl()]
+%%
+%% @doc Returns the list of element subtrees of an abstract tuple.
+%%
+%% @see c_tuple/1
+
+tuple_es(#tuple{es = Es}) ->
+ Es;
+tuple_es(#literal{val = V}) ->
+ make_lit_list(tuple_to_list(V)).
+
+
+%% @spec tuple_arity(Node::cerl()) -> integer()
+%%
+%% @doc Returns the number of element subtrees of an abstract tuple.
+%%
+%% <p>Note: this is equivalent to <code>length(tuple_es(Node))</code>,
+%% but potentially more efficient.</p>
+%%
+%% @see tuple_es/1
+%% @see c_tuple/1
+
+tuple_arity(#tuple{es = Es}) ->
+ length(Es);
+tuple_arity(#literal{val = V}) when tuple(V) ->
+ size(V).
+
+
+%% ---------------------------------------------------------------------
+
+%% @spec c_var(Name::var_name()) -> cerl()
+%%
+%% var_name() = integer() | atom() | {atom(), integer()}
+%%
+%% @doc Creates an abstract variable. A variable is identified by its
+%% name, given by the <code>Name</code> parameter.
+%%
+%% <p>If a name is given by a single atom, it should either be a
+%% "simple" atom which does not need to be single-quoted in Erlang, or
+%% otherwise its print name should correspond to a proper Erlang
+%% variable, i.e., begin with an uppercase character or an
+%% underscore. Names on the form <code>{A, N}</code> represent
+%% function name variables "<code><em>A</em>/<em>N</em></code>"; these
+%% are special variables which may be bound only in the function
+%% definitions of a module or a <code>letrec</code>. They may not be
+%% bound in <code>let</code> expressions and cannot occur in clause
+%% patterns. The atom <code>A</code> in a function name may be any
+%% atom; the integer <code>N</code> must be nonnegative. The functions
+%% <code>c_fname/2</code> etc. are utilities for handling function
+%% name variables.</p>
+%%
+%% <p>When printing variable names, they must have the form of proper
+%% Core Erlang variables and function names. E.g., a name represented
+%% by an integer such as <code>42</code> could be formatted as
+%% "<code>_42</code>", an atom <code>'Xxx'</code> simply as
+%% "<code>Xxx</code>", and an atom <code>foo</code> as
+%% "<code>_foo</code>". However, one must assure that any two valid
+%% distinct names are never mapped to the same strings. Tuples such
+%% as <code>{foo, 2}</code> representing function names can simply by
+%% formatted as "<code>'foo'/2</code>", with no risk of conflicts.</p>
+%%
+%% @see ann_c_var/2
+%% @see update_c_var/2
+%% @see is_c_var/1
+%% @see var_name/1
+%% @see c_fname/2
+%% @see c_module/4
+%% @see c_letrec/2
+
+-record(var, {ann = [], name}).
+
+c_var(Name) ->
+ #var{name = Name}.
+
+
+%% @spec ann_c_var(As::[term()], Name::var_name()) -> cerl()
+%%
+%% @see c_var/1
+
+ann_c_var(As, Name) ->
+ #var{name = Name, ann = As}.
+
+%% @spec update_c_var(Old::cerl(), Name::var_name()) -> cerl()
+%%
+%% @see c_var/1
+
+update_c_var(Node, Name) ->
+ #var{name = Name, ann = get_ann(Node)}.
+
+
+%% @spec is_c_var(Node::cerl()) -> boolean()
+%%
+%% @doc Returns <code>true</code> if <code>Node</code> is an abstract
+%% variable, otherwise <code>false</code>.
+%%
+%% @see c_var/1
+
+is_c_var(#var{}) ->
+ true;
+is_c_var(_) ->
+ false.
+
+
+%% @spec c_fname(Name::atom(), Arity::integer()) -> cerl()
+%% @equiv c_var({Name, Arity})
+%% @see fname_id/1
+%% @see fname_arity/1
+%% @see is_c_fname/1
+%% @see ann_c_fname/3
+%% @see update_c_fname/3
+
+c_fname(Atom, Arity) ->
+ c_var({Atom, Arity}).
+
+
+%% @spec ann_c_fname(As::[term()], Name::atom(), Arity::integer()) ->
+%% cerl()
+%% @equiv ann_c_var(As, {Atom, Arity})
+%% @see c_fname/2
+
+ann_c_fname(As, Atom, Arity) ->
+ ann_c_var(As, {Atom, Arity}).
+
+
+%% @spec update_c_fname(Old::cerl(), Name::atom()) -> cerl()
+%% @doc Like <code>update_c_fname/3</code>, but takes the arity from
+%% <code>Node</code>.
+%% @see update_c_fname/3
+%% @see c_fname/2
+
+update_c_fname(#var{name = {_, Arity}, ann = As}, Atom) ->
+ #var{name = {Atom, Arity}, ann = As}.
+
+
+%% @spec update_c_fname(Old::cerl(), Name::atom(), Arity::integer()) ->
+%% cerl()
+%% @equiv update_c_var(Old, {Atom, Arity})
+%% @see update_c_fname/2
+%% @see c_fname/2
+
+update_c_fname(Node, Atom, Arity) ->
+ update_c_var(Node, {Atom, Arity}).
+
+
+%% @spec is_c_fname(Node::cerl()) -> boolean()
+%%
+%% @doc Returns <code>true</code> if <code>Node</code> is an abstract
+%% function name variable, otherwise <code>false</code>.
+%%
+%% @see c_fname/2
+%% @see c_var/1
+%% @see c_var_name/1
+
+is_c_fname(#var{name = {A, N}}) when atom(A), integer(N), N >= 0 ->
+ true;
+is_c_fname(_) ->
+ false.
+
+
+%% @spec var_name(cerl()) -> var_name()
+%%
+%% @doc Returns the name of an abstract variable.
+%%
+%% @see c_var/1
+
+var_name(Node) ->
+ Node#var.name.
+
+
+%% @spec fname_id(cerl()) -> atom()
+%%
+%% @doc Returns the identifier part of an abstract function name
+%% variable.
+%%
+%% @see fname_arity/1
+%% @see c_fname/2
+
+fname_id(#var{name={A,_}}) ->
+ A.
+
+
+%% @spec fname_arity(cerl()) -> integer()
+%%
+%% @doc Returns the arity part of an abstract function name variable.
+%%
+%% @see fname_id/1
+%% @see c_fname/2
+
+fname_arity(#var{name={_,N}}) ->
+ N.
+
+
+%% ---------------------------------------------------------------------
+
+%% @spec c_values(Elements::[cerl()]) -> cerl()
+%%
+%% @doc Creates an abstract value list. If <code>Elements</code> is
+%% <code>[E1, ..., En]</code>, the result represents
+%% "<code>&lt;<em>E1</em>, ..., <em>En</em>&gt;</code>".
+%%
+%% @see ann_c_values/2
+%% @see update_c_values/2
+%% @see is_c_values/1
+%% @see values_es/1
+%% @see values_arity/1
+
+-record(values, {ann = [], es}).
+
+c_values(Es) ->
+ #values{es = Es}.
+
+
+%% @spec ann_c_values(As::[term()], Elements::[cerl()]) -> cerl()
+%% @see c_values/1
+
+ann_c_values(As, Es) ->
+ #values{es = Es, ann = As}.
+
+
+%% @spec update_c_values(Old::cerl(), Elements::[cerl()]) -> cerl()
+%% @see c_values/1
+
+update_c_values(Node, Es) ->
+ #values{es = Es, ann = get_ann(Node)}.
+
+
+%% @spec is_c_values(Node::cerl()) -> boolean()
+%%
+%% @doc Returns <code>true</code> if <code>Node</code> is an abstract
+%% value list; otherwise <code>false</code>.
+%%
+%% @see c_values/1
+
+is_c_values(#values{}) ->
+ true;
+is_c_values(_) ->
+ false.
+
+
+%% @spec values_es(cerl()) -> [cerl()]
+%%
+%% @doc Returns the list of element subtrees of an abstract value
+%% list.
+%%
+%% @see c_values/1
+%% @see values_arity/1
+
+values_es(Node) ->
+ Node#values.es.
+
+
+%% @spec values_arity(Node::cerl()) -> integer()
+%%
+%% @doc Returns the number of element subtrees of an abstract value
+%% list.
+%%
+%% <p>Note: This is equivalent to
+%% <code>length(values_es(Node))</code>, but potentially more
+%% efficient.</p>
+%%
+%% @see c_values/1
+%% @see values_es/1
+
+values_arity(Node) ->
+ length(values_es(Node)).
+
+
+%% ---------------------------------------------------------------------
+
+%% @spec c_binary(Segments::[cerl()]) -> cerl()
+%%
+%% @doc Creates an abstract binary-template. A binary object is a
+%% sequence of 8-bit bytes. It is specified by zero or more bit-string
+%% template <em>segments</em> of arbitrary lengths (in number of bits),
+%% such that the sum of the lengths is evenly divisible by 8. If
+%% <code>Segments</code> is <code>[S1, ..., Sn]</code>, the result
+%% represents "<code>#{<em>S1</em>, ..., <em>Sn</em>}#</code>". All the
+%% <code>Si</code> must have type <code>bitstr</code>.
+%%
+%% @see ann_c_binary/2
+%% @see update_c_binary/2
+%% @see is_c_binary/1
+%% @see binary_segments/1
+%% @see c_bitstr/5
+
+-record(binary, {ann = [], segments}).
+
+c_binary(Segments) ->
+ #binary{segments = Segments}.
+
+
+%% @spec ann_c_binary(As::[term()], Segments::[cerl()]) -> cerl()
+%% @see c_binary/1
+
+ann_c_binary(As, Segments) ->
+ #binary{segments = Segments, ann = As}.
+
+
+%% @spec update_c_binary(Old::cerl(), Segments::[cerl()]) -> cerl()
+%% @see c_binary/1
+
+update_c_binary(Node, Segments) ->
+ #binary{segments = Segments, ann = get_ann(Node)}.
+
+
+%% @spec is_c_binary(Node::cerl()) -> boolean()
+%%
+%% @doc Returns <code>true</code> if <code>Node</code> is an abstract
+%% binary-template; otherwise <code>false</code>.
+%%
+%% @see c_binary/1
+
+is_c_binary(#binary{}) ->
+ true;
+is_c_binary(_) ->
+ false.
+
+
+%% @spec binary_segments(cerl()) -> [cerl()]
+%%
+%% @doc Returns the list of segment subtrees of an abstract
+%% binary-template.
+%%
+%% @see c_binary/1
+%% @see c_bitstr/5
+
+binary_segments(Node) ->
+ Node#binary.segments.
+
+
+%% @spec c_bitstr(Value::cerl(), Size::cerl(), Unit::cerl(),
+%% Type::cerl(), Flags::cerl()) -> cerl()
+%%
+%% @doc Creates an abstract bit-string template. These can only occur as
+%% components of an abstract binary-template (see {@link c_binary/1}).
+%% The result represents "<code>#&lt;<em>Value</em>&gt;(<em>Size</em>,
+%% <em>Unit</em>, <em>Type</em>, <em>Flags</em>)</code>", where
+%% <code>Unit</code> must represent a positive integer constant,
+%% <code>Type</code> must represent a constant atom (one of
+%% <code>'integer'</code>, <code>'float'</code>, or
+%% <code>'binary'</code>), and <code>Flags</code> must represent a
+%% constant list <code>"[<em>F1</em>, ..., <em>Fn</em>]"</code> where
+%% all the <code>Fi</code> are atoms.
+%%
+%% @see c_binary/1
+%% @see ann_c_bitstr/6
+%% @see update_c_bitstr/6
+%% @see is_c_bitstr/1
+%% @see bitstr_val/1
+%% @see bitstr_size/1
+%% @see bitstr_unit/1
+%% @see bitstr_type/1
+%% @see bitstr_flags/1
+
+-record(bitstr, {ann = [], val, size, unit, type, flags}).
+
+c_bitstr(Val, Size, Unit, Type, Flags) ->
+ #bitstr{val = Val, size = Size, unit = Unit, type = Type,
+ flags = Flags}.
+
+
+%% @spec c_bitstr(Value::cerl(), Size::cerl(), Type::cerl(),
+%% Flags::cerl()) -> cerl()
+%% @equiv c_bitstr(Value, Size, abstract(1), Type, Flags)
+
+c_bitstr(Val, Size, Type, Flags) ->
+ c_bitstr(Val, Size, abstract(1), Type, Flags).
+
+
+%% @spec c_bitstr(Value::cerl(), Type::cerl(),
+%% Flags::cerl()) -> cerl()
+%% @equiv c_bitstr(Value, abstract(all), abstract(1), Type, Flags)
+
+c_bitstr(Val, Type, Flags) ->
+ c_bitstr(Val, abstract(all), abstract(1), Type, Flags).
+
+
+%% @spec ann_c_bitstr(As::[term()], Value::cerl(), Size::cerl(),
+%% Unit::cerl(), Type::cerl(), Flags::cerl()) -> cerl()
+%% @see c_bitstr/5
+%% @see ann_c_bitstr/5
+
+ann_c_bitstr(As, Val, Size, Unit, Type, Flags) ->
+ #bitstr{val = Val, size = Size, unit = Unit, type = Type,
+ flags = Flags, ann = As}.
+
+%% @spec ann_c_bitstr(As::[term()], Value::cerl(), Size::cerl(),
+%% Type::cerl(), Flags::cerl()) -> cerl()
+%% @equiv ann_c_bitstr(As, Value, Size, abstract(1), Type, Flags)
+
+ann_c_bitstr(As, Value, Size, Type, Flags) ->
+ ann_c_bitstr(As, Value, Size, abstract(1), Type, Flags).
+
+
+%% @spec update_c_bitstr(Old::cerl(), Value::cerl(), Size::cerl(),
+%% Unit::cerl(), Type::cerl(), Flags::cerl()) -> cerl()
+%% @see c_bitstr/5
+%% @see update_c_bitstr/5
+
+update_c_bitstr(Node, Val, Size, Unit, Type, Flags) ->
+ #bitstr{val = Val, size = Size, unit = Unit, type = Type,
+ flags = Flags, ann = get_ann(Node)}.
+
+
+%% @spec update_c_bitstr(Old::cerl(), Value::cerl(), Size::cerl(),
+%% Type::cerl(), Flags::cerl()) -> cerl()
+%% @equiv update_c_bitstr(Node, Value, Size, abstract(1), Type, Flags)
+
+update_c_bitstr(Node, Value, Size, Type, Flags) ->
+ update_c_bitstr(Node, Value, Size, abstract(1), Type, Flags).
+
+%% @spec is_c_bitstr(Node::cerl()) -> boolean()
+%%
+%% @doc Returns <code>true</code> if <code>Node</code> is an abstract
+%% bit-string template; otherwise <code>false</code>.
+%%
+%% @see c_bitstr/5
+
+is_c_bitstr(#bitstr{}) ->
+ true;
+is_c_bitstr(_) ->
+ false.
+
+
+%% @spec bitstr_val(cerl()) -> cerl()
+%%
+%% @doc Returns the value subtree of an abstract bit-string template.
+%%
+%% @see c_bitstr/5
+
+bitstr_val(Node) ->
+ Node#bitstr.val.
+
+
+%% @spec bitstr_size(cerl()) -> cerl()
+%%
+%% @doc Returns the size subtree of an abstract bit-string template.
+%%
+%% @see c_bitstr/5
+
+bitstr_size(Node) ->
+ Node#bitstr.size.
+
+
+%% @spec bitstr_bitsize(cerl()) -> integer() | any | all
+%%
+%% @doc Returns the total size in bits of an abstract bit-string
+%% template. If the size field is an integer literal, the result is the
+%% product of the size and unit values; if the size field is the atom
+%% literal <code>all</code>, the atom <code>all</code> is returned; in
+%% all other cases, the atom <code>any</code> is returned.
+%%
+%% @see c_bitstr/5
+
+bitstr_bitsize(Node) ->
+ Size = Node#bitstr.size,
+ case is_literal(Size) of
+ true ->
+ case concrete(Size) of
+ all ->
+ all;
+ S when integer(S) ->
+ S*concrete(Node#bitstr.unit);
+ true ->
+ any
+ end;
+ false ->
+ any
+ end.
+
+
+%% @spec bitstr_unit(cerl()) -> cerl()
+%%
+%% @doc Returns the unit subtree of an abstract bit-string template.
+%%
+%% @see c_bitstr/5
+
+bitstr_unit(Node) ->
+ Node#bitstr.unit.
+
+
+%% @spec bitstr_type(cerl()) -> cerl()
+%%
+%% @doc Returns the type subtree of an abstract bit-string template.
+%%
+%% @see c_bitstr/5
+
+bitstr_type(Node) ->
+ Node#bitstr.type.
+
+
+%% @spec bitstr_flags(cerl()) -> cerl()
+%%
+%% @doc Returns the flags subtree of an abstract bit-string template.
+%%
+%% @see c_bitstr/5
+
+bitstr_flags(Node) ->
+ Node#bitstr.flags.
+
+
+%% ---------------------------------------------------------------------
+
+%% @spec c_fun(Variables::[cerl()], Body::cerl()) -> cerl()
+%%
+%% @doc Creates an abstract fun-expression. If <code>Variables</code>
+%% is <code>[V1, ..., Vn]</code>, the result represents "<code>fun
+%% (<em>V1</em>, ..., <em>Vn</em>) -> <em>Body</em></code>". All the
+%% <code>Vi</code> must have type <code>var</code>.
+%%
+%% @see ann_c_fun/3
+%% @see update_c_fun/3
+%% @see is_c_fun/1
+%% @see fun_vars/1
+%% @see fun_body/1
+%% @see fun_arity/1
+
+-record('fun', {ann = [], vars, body}).
+
+c_fun(Variables, Body) ->
+ #'fun'{vars = Variables, body = Body}.
+
+
+%% @spec ann_c_fun(As::[term()], Variables::[cerl()], Body::cerl()) ->
+%% cerl()
+%% @see c_fun/2
+
+ann_c_fun(As, Variables, Body) ->
+ #'fun'{vars = Variables, body = Body, ann = As}.
+
+
+%% @spec update_c_fun(Old::cerl(), Variables::[cerl()],
+%% Body::cerl()) -> cerl()
+%% @see c_fun/2
+
+update_c_fun(Node, Variables, Body) ->
+ #'fun'{vars = Variables, body = Body, ann = get_ann(Node)}.
+
+
+%% @spec is_c_fun(Node::cerl()) -> boolean()
+%%
+%% @doc Returns <code>true</code> if <code>Node</code> is an abstract
+%% fun-expression, otherwise <code>false</code>.
+%%
+%% @see c_fun/2
+
+is_c_fun(#'fun'{}) ->
+ true; % Now this is fun!
+is_c_fun(_) ->
+ false.
+
+
+%% @spec fun_vars(cerl()) -> [cerl()]
+%%
+%% @doc Returns the list of parameter subtrees of an abstract
+%% fun-expression.
+%%
+%% @see c_fun/2
+%% @see fun_arity/1
+
+fun_vars(Node) ->
+ Node#'fun'.vars.
+
+
+%% @spec fun_body(cerl()) -> cerl()
+%%
+%% @doc Returns the body subtree of an abstract fun-expression.
+%%
+%% @see c_fun/2
+
+fun_body(Node) ->
+ Node#'fun'.body.
+
+
+%% @spec fun_arity(Node::cerl()) -> integer()
+%%
+%% @doc Returns the number of parameter subtrees of an abstract
+%% fun-expression.
+%%
+%% <p>Note: this is equivalent to <code>length(fun_vars(Node))</code>,
+%% but potentially more efficient.</p>
+%%
+%% @see c_fun/2
+%% @see fun_vars/1
+
+fun_arity(Node) ->
+ length(fun_vars(Node)).
+
+
+%% ---------------------------------------------------------------------
+
+%% @spec c_seq(Argument::cerl(), Body::cerl()) -> cerl()
+%%
+%% @doc Creates an abstract sequencing expression. The result
+%% represents "<code>do <em>Argument</em> <em>Body</em></code>".
+%%
+%% @see ann_c_seq/3
+%% @see update_c_seq/3
+%% @see is_c_seq/1
+%% @see seq_arg/1
+%% @see seq_body/1
+
+-record(seq, {ann = [], arg, body}).
+
+c_seq(Argument, Body) ->
+ #seq{arg = Argument, body = Body}.
+
+
+%% @spec ann_c_seq(As::[term()], Argument::cerl(), Body::cerl()) ->
+%% cerl()
+%% @see c_seq/2
+
+ann_c_seq(As, Argument, Body) ->
+ #seq{arg = Argument, body = Body, ann = As}.
+
+
+%% @spec update_c_seq(Old::cerl(), Argument::cerl(), Body::cerl()) ->
+%% cerl()
+%% @see c_seq/2
+
+update_c_seq(Node, Argument, Body) ->
+ #seq{arg = Argument, body = Body, ann = get_ann(Node)}.
+
+
+%% @spec is_c_seq(Node::cerl()) -> boolean()
+%%
+%% @doc Returns <code>true</code> if <code>Node</code> is an abstract
+%% sequencing expression, otherwise <code>false</code>.
+%%
+%% @see c_seq/2
+
+is_c_seq(#seq{}) ->
+ true;
+is_c_seq(_) ->
+ false.
+
+
+%% @spec seq_arg(cerl()) -> cerl()
+%%
+%% @doc Returns the argument subtree of an abstract sequencing
+%% expression.
+%%
+%% @see c_seq/2
+
+seq_arg(Node) ->
+ Node#seq.arg.
+
+
+%% @spec seq_body(cerl()) -> cerl()
+%%
+%% @doc Returns the body subtree of an abstract sequencing expression.
+%%
+%% @see c_seq/2
+
+seq_body(Node) ->
+ Node#seq.body.
+
+
+%% ---------------------------------------------------------------------
+
+%% @spec c_let(Variables::[cerl()], Argument::cerl(), Body::cerl()) ->
+%% cerl()
+%%
+%% @doc Creates an abstract let-expression. If <code>Variables</code>
+%% is <code>[V1, ..., Vn]</code>, the result represents "<code>let
+%% &lt;<em>V1</em>, ..., <em>Vn</em>&gt; = <em>Argument</em> in
+%% <em>Body</em></code>". All the <code>Vi</code> must have type
+%% <code>var</code>.
+%%
+%% @see ann_c_let/4
+%% @see update_c_let/4
+%% @see is_c_let/1
+%% @see let_vars/1
+%% @see let_arg/1
+%% @see let_body/1
+%% @see let_arity/1
+
+-record('let', {ann = [], vars, arg, body}).
+
+c_let(Variables, Argument, Body) ->
+ #'let'{vars = Variables, arg = Argument, body = Body}.
+
+
+%% ann_c_let(As, Variables, Argument, Body) -> Node
+%% @see c_let/3
+
+ann_c_let(As, Variables, Argument, Body) ->
+ #'let'{vars = Variables, arg = Argument, body = Body, ann = As}.
+
+
+%% update_c_let(Old, Variables, Argument, Body) -> Node
+%% @see c_let/3
+
+update_c_let(Node, Variables, Argument, Body) ->
+ #'let'{vars = Variables, arg = Argument, body = Body,
+ ann = get_ann(Node)}.
+
+
+%% @spec is_c_let(Node::cerl()) -> boolean()
+%%
+%% @doc Returns <code>true</code> if <code>Node</code> is an abstract
+%% let-expression, otherwise <code>false</code>.
+%%
+%% @see c_let/3
+
+is_c_let(#'let'{}) ->
+ true;
+is_c_let(_) ->
+ false.
+
+
+%% @spec let_vars(cerl()) -> [cerl()]
+%%
+%% @doc Returns the list of left-hand side variables of an abstract
+%% let-expression.
+%%
+%% @see c_let/3
+%% @see let_arity/1
+
+let_vars(Node) ->
+ Node#'let'.vars.
+
+
+%% @spec let_arg(cerl()) -> cerl()
+%%
+%% @doc Returns the argument subtree of an abstract let-expression.
+%%
+%% @see c_let/3
+
+let_arg(Node) ->
+ Node#'let'.arg.
+
+
+%% @spec let_body(cerl()) -> cerl()
+%%
+%% @doc Returns the body subtree of an abstract let-expression.
+%%
+%% @see c_let/3
+
+let_body(Node) ->
+ Node#'let'.body.
+
+
+%% @spec let_arity(Node::cerl()) -> integer()
+%%
+%% @doc Returns the number of left-hand side variables of an abstract
+%% let-expression.
+%%
+%% <p>Note: this is equivalent to <code>length(let_vars(Node))</code>,
+%% but potentially more efficient.</p>
+%%
+%% @see c_let/3
+%% @see let_vars/1
+
+let_arity(Node) ->
+ length(let_vars(Node)).
+
+
+%% ---------------------------------------------------------------------
+
+%% @spec c_letrec(Definitions::[{cerl(), cerl()}], Body::cerl()) ->
+%% cerl()
+%%
+%% @doc Creates an abstract letrec-expression. If
+%% <code>Definitions</code> is <code>[{V1, F1}, ..., {Vn, Fn}]</code>,
+%% the result represents "<code>letrec <em>V1</em> = <em>F1</em>
+%% ... <em>Vn</em> = <em>Fn</em> in <em>Body</em></code>. All the
+%% <code>Vi</code> must have type <code>var</code> and represent
+%% function names. All the <code>Fi</code> must have type
+%% <code>'fun'</code>.
+%%
+%% @see ann_c_letrec/3
+%% @see update_c_letrec/3
+%% @see is_c_letrec/1
+%% @see letrec_defs/1
+%% @see letrec_body/1
+%% @see letrec_vars/1
+
+-record(letrec, {ann = [], defs, body}).
+
+c_letrec(Defs, Body) ->
+ #letrec{defs = Defs, body = Body}.
+
+
+%% @spec ann_c_letrec(As::[term()], Definitions::[{cerl(), cerl()}],
+%% Body::cerl()) -> cerl()
+%% @see c_letrec/2
+
+ann_c_letrec(As, Defs, Body) ->
+ #letrec{defs = Defs, body = Body, ann = As}.
+
+
+%% @spec update_c_letrec(Old::cerl(),
+%% Definitions::[{cerl(), cerl()}],
+%% Body::cerl()) -> cerl()
+%% @see c_letrec/2
+
+update_c_letrec(Node, Defs, Body) ->
+ #letrec{defs = Defs, body = Body, ann = get_ann(Node)}.
+
+
+%% @spec is_c_letrec(Node::cerl()) -> boolean()
+%%
+%% @doc Returns <code>true</code> if <code>Node</code> is an abstract
+%% letrec-expression, otherwise <code>false</code>.
+%%
+%% @see c_letrec/2
+
+is_c_letrec(#letrec{}) ->
+ true;
+is_c_letrec(_) ->
+ false.
+
+
+%% @spec letrec_defs(Node::cerl()) -> [{cerl(), cerl()}]
+%%
+%% @doc Returns the list of definitions of an abstract
+%% letrec-expression. If <code>Node</code> represents "<code>letrec
+%% <em>V1</em> = <em>F1</em> ... <em>Vn</em> = <em>Fn</em> in
+%% <em>Body</em></code>", the returned value is <code>[{V1, F1}, ...,
+%% {Vn, Fn}]</code>.
+%%
+%% @see c_letrec/2
+
+letrec_defs(Node) ->
+ Node#letrec.defs.
+
+
+%% @spec letrec_body(cerl()) -> cerl()
+%%
+%% @doc Returns the body subtree of an abstract letrec-expression.
+%%
+%% @see c_letrec/2
+
+letrec_body(Node) ->
+ Node#letrec.body.
+
+
+%% @spec letrec_vars(cerl()) -> [cerl()]
+%%
+%% @doc Returns the list of left-hand side function variable subtrees
+%% of a letrec-expression. If <code>Node</code> represents
+%% "<code>letrec <em>V1</em> = <em>F1</em> ... <em>Vn</em> =
+%% <em>Fn</em> in <em>Body</em></code>", the returned value is
+%% <code>[V1, ..., Vn]</code>.
+%%
+%% @see c_letrec/2
+
+letrec_vars(Node) ->
+ [F || {F, _} <- letrec_defs(Node)].
+
+
+%% ---------------------------------------------------------------------
+
+%% @spec c_case(Argument::cerl(), Clauses::[cerl()]) -> cerl()
+%%
+%% @doc Creates an abstract case-expression. If <code>Clauses</code>
+%% is <code>[C1, ..., Cn]</code>, the result represents "<code>case
+%% <em>Argument</em> of <em>C1</em> ... <em>Cn</em>
+%% end</code>". <code>Clauses</code> must not be empty.
+%%
+%% @see ann_c_case/3
+%% @see update_c_case/3
+%% @see is_c_case/1
+%% @see c_clause/3
+%% @see case_arg/1
+%% @see case_clauses/1
+%% @see case_arity/1
+
+-record('case', {ann = [], arg, clauses}).
+
+c_case(Expr, Clauses) ->
+ #'case'{arg = Expr, clauses = Clauses}.
+
+
+%% @spec ann_c_case(As::[term()], Argument::cerl(),
+%% Clauses::[cerl()]) -> cerl()
+%% @see c_case/2
+
+ann_c_case(As, Expr, Clauses) ->
+ #'case'{arg = Expr, clauses = Clauses, ann = As}.
+
+
+%% @spec update_c_case(Old::cerl(), Argument::cerl(),
+%% Clauses::[cerl()]) -> cerl()
+%% @see c_case/2
+
+update_c_case(Node, Expr, Clauses) ->
+ #'case'{arg = Expr, clauses = Clauses, ann = get_ann(Node)}.
+
+
+%% is_c_case(Node) -> boolean()
+%%
+%% Node = cerl()
+%%
+%% @doc Returns <code>true</code> if <code>Node</code> is an abstract
+%% case-expression; otherwise <code>false</code>.
+%%
+%% @see c_case/2
+
+is_c_case(#'case'{}) ->
+ true;
+is_c_case(_) ->
+ false.
+
+
+%% @spec case_arg(cerl()) -> cerl()
+%%
+%% @doc Returns the argument subtree of an abstract case-expression.
+%%
+%% @see c_case/2
+
+case_arg(Node) ->
+ Node#'case'.arg.
+
+
+%% @spec case_clauses(cerl()) -> [cerl()]
+%%
+%% @doc Returns the list of clause subtrees of an abstract
+%% case-expression.
+%%
+%% @see c_case/2
+%% @see case_arity/1
+
+case_clauses(Node) ->
+ Node#'case'.clauses.
+
+
+%% @spec case_arity(Node::cerl()) -> integer()
+%%
+%% @doc Equivalent to
+%% <code>clause_arity(hd(case_clauses(Node)))</code>, but potentially
+%% more efficient.
+%%
+%% @see c_case/2
+%% @see case_clauses/1
+%% @see clause_arity/1
+
+case_arity(Node) ->
+ clause_arity(hd(case_clauses(Node))).
+
+
+%% ---------------------------------------------------------------------
+
+%% @spec c_clause(Patterns::[cerl()], Body::cerl()) -> cerl()
+%% @equiv c_clause(Patterns, c_atom(true), Body)
+%% @see c_atom/1
+
+c_clause(Patterns, Body) ->
+ c_clause(Patterns, c_atom(true), Body).
+
+
+%% @spec c_clause(Patterns::[cerl()], Guard::cerl(), Body::cerl()) ->
+%% cerl()
+%%
+%% @doc Creates an an abstract clause. If <code>Patterns</code> is
+%% <code>[P1, ..., Pn]</code>, the result represents
+%% "<code>&lt;<em>P1</em>, ..., <em>Pn</em>&gt; when <em>Guard</em> ->
+%% <em>Body</em></code>".
+%%
+%% @see c_clause/2
+%% @see ann_c_clause/4
+%% @see update_c_clause/4
+%% @see is_c_clause/1
+%% @see c_case/2
+%% @see c_receive/3
+%% @see clause_pats/1
+%% @see clause_guard/1
+%% @see clause_body/1
+%% @see clause_arity/1
+%% @see clause_vars/1
+
+-record(clause, {ann = [], pats, guard, body}).
+
+c_clause(Patterns, Guard, Body) ->
+ #clause{pats = Patterns, guard = Guard, body = Body}.
+
+
+%% @spec ann_c_clause(As::[term()], Patterns::[cerl()],
+%% Body::cerl()) -> cerl()
+%% @equiv ann_c_clause(As, Patterns, c_atom(true), Body)
+%% @see c_clause/3
+ann_c_clause(As, Patterns, Body) ->
+ ann_c_clause(As, Patterns, c_atom(true), Body).
+
+
+%% @spec ann_c_clause(As::[term()], Patterns::[cerl()], Guard::cerl(),
+%% Body::cerl()) -> cerl()
+%% @see ann_c_clause/3
+%% @see c_clause/3
+
+ann_c_clause(As, Patterns, Guard, Body) ->
+ #clause{pats = Patterns, guard = Guard, body = Body, ann = As}.
+
+
+%% @spec update_c_clause(Old::cerl(), Patterns::[cerl()],
+%% Guard::cerl(), Body::cerl()) -> cerl()
+%% @see c_clause/3
+
+update_c_clause(Node, Patterns, Guard, Body) ->
+ #clause{pats = Patterns, guard = Guard, body = Body,
+ ann = get_ann(Node)}.
+
+
+%% @spec is_c_clause(Node::cerl()) -> boolean()
+%%
+%% @doc Returns <code>true</code> if <code>Node</code> is an abstract
+%% clause, otherwise <code>false</code>.
+%%
+%% @see c_clause/3
+
+is_c_clause(#clause{}) ->
+ true;
+is_c_clause(_) ->
+ false.
+
+
+%% @spec clause_pats(cerl()) -> [cerl()]
+%%
+%% @doc Returns the list of pattern subtrees of an abstract clause.
+%%
+%% @see c_clause/3
+%% @see clause_arity/1
+
+clause_pats(Node) ->
+ Node#clause.pats.
+
+
+%% @spec clause_guard(cerl()) -> cerl()
+%%
+%% @doc Returns the guard subtree of an abstract clause.
+%%
+%% @see c_clause/3
+
+clause_guard(Node) ->
+ Node#clause.guard.
+
+
+%% @spec clause_body(cerl()) -> cerl()
+%%
+%% @doc Returns the body subtree of an abstract clause.
+%%
+%% @see c_clause/3
+
+clause_body(Node) ->
+ Node#clause.body.
+
+
+%% @spec clause_arity(Node::cerl()) -> integer()
+%%
+%% @doc Returns the number of pattern subtrees of an abstract clause.
+%%
+%% <p>Note: this is equivalent to
+%% <code>length(clause_pats(Node))</code>, but potentially more
+%% efficient.</p>
+%%
+%% @see c_clause/3
+%% @see clause_pats/1
+
+clause_arity(Node) ->
+ length(clause_pats(Node)).
+
+
+%% @spec clause_vars(cerl()) -> [cerl()]
+%%
+%% @doc Returns the list of all abstract variables in the patterns of
+%% an abstract clause. The order of listing is not defined.
+%%
+%% @see c_clause/3
+%% @see pat_list_vars/1
+
+clause_vars(Clause) ->
+ pat_list_vars(clause_pats(Clause)).
+
+
+%% @spec pat_vars(Pattern::cerl()) -> [cerl()]
+%%
+%% @doc Returns the list of all abstract variables in a pattern. An
+%% exception is thrown if <code>Node</code> does not represent a
+%% well-formed Core Erlang clause pattern. The order of listing is not
+%% defined.
+%%
+%% @see pat_list_vars/1
+%% @see clause_vars/1
+
+pat_vars(Node) ->
+ pat_vars(Node, []).
+
+pat_vars(Node, Vs) ->
+ case type(Node) of
+ var ->
+ [Node | Vs];
+ literal ->
+ Vs;
+ cons ->
+ pat_vars(cons_hd(Node), pat_vars(cons_tl(Node), Vs));
+ tuple ->
+ pat_list_vars(tuple_es(Node), Vs);
+ binary ->
+ pat_list_vars(binary_segments(Node), Vs);
+ bitstr ->
+ pat_vars(bitstr_val(Node), Vs);
+ alias ->
+ pat_vars(alias_pat(Node), [alias_var(Node) | Vs])
+ end.
+
+
+%% @spec pat_list_vars(Patterns::[cerl()]) -> [cerl()]
+%%
+%% @doc Returns the list of all abstract variables in the given
+%% patterns. An exception is thrown if some element in
+%% <code>Patterns</code> does not represent a well-formed Core Erlang
+%% clause pattern. The order of listing is not defined.
+%%
+%% @see pat_vars/1
+%% @see clause_vars/1
+
+pat_list_vars(Ps) ->
+ pat_list_vars(Ps, []).
+
+pat_list_vars([P | Ps], Vs) ->
+ pat_list_vars(Ps, pat_vars(P, Vs));
+pat_list_vars([], Vs) ->
+ Vs.
+
+
+%% ---------------------------------------------------------------------
+
+%% @spec c_alias(Variable::cerl(), Pattern::cerl()) -> cerl()
+%%
+%% @doc Creates an abstract pattern alias. The result represents
+%% "<code><em>Variable</em> = <em>Pattern</em></code>".
+%%
+%% @see ann_c_alias/3
+%% @see update_c_alias/3
+%% @see is_c_alias/1
+%% @see alias_var/1
+%% @see alias_pat/1
+%% @see c_clause/3
+
+-record(alias, {ann = [], var, pat}).
+
+c_alias(Var, Pattern) ->
+ #alias{var = Var, pat = Pattern}.
+
+
+%% @spec ann_c_alias(As::[term()], Variable::cerl(),
+%% Pattern::cerl()) -> cerl()
+%% @see c_alias/2
+
+ann_c_alias(As, Var, Pattern) ->
+ #alias{var = Var, pat = Pattern, ann = As}.
+
+
+%% @spec update_c_alias(Old::cerl(), Variable::cerl(),
+%% Pattern::cerl()) -> cerl()
+%% @see c_alias/2
+
+update_c_alias(Node, Var, Pattern) ->
+ #alias{var = Var, pat = Pattern, ann = get_ann(Node)}.
+
+
+%% @spec is_c_alias(Node::cerl()) -> boolean()
+%%
+%% @doc Returns <code>true</code> if <code>Node</code> is an abstract
+%% pattern alias, otherwise <code>false</code>.
+%%
+%% @see c_alias/2
+
+is_c_alias(#alias{}) ->
+ true;
+is_c_alias(_) ->
+ false.
+
+
+%% @spec alias_var(cerl()) -> cerl()
+%%
+%% @doc Returns the variable subtree of an abstract pattern alias.
+%%
+%% @see c_alias/2
+
+alias_var(Node) ->
+ Node#alias.var.
+
+
+%% @spec alias_pat(cerl()) -> cerl()
+%%
+%% @doc Returns the pattern subtree of an abstract pattern alias.
+%%
+%% @see c_alias/2
+
+alias_pat(Node) ->
+ Node#alias.pat.
+
+
+%% ---------------------------------------------------------------------
+
+%% @spec c_receive(Clauses::[cerl()]) -> cerl()
+%% @equiv c_receive(Clauses, c_atom(infinity), c_atom(true))
+%% @see c_atom/1
+
+c_receive(Clauses) ->
+ c_receive(Clauses, c_atom(infinity), c_atom(true)).
+
+
+%% @spec c_receive(Clauses::[cerl()], Timeout::cerl(),
+%% Action::cerl()) -> cerl()
+%%
+%% @doc Creates an abstract receive-expression. If
+%% <code>Clauses</code> is <code>[C1, ..., Cn]</code>, the result
+%% represents "<code>receive <em>C1</em> ... <em>Cn</em> after
+%% <em>Timeout</em> -> <em>Action</em> end</code>".
+%%
+%% @see c_receive/1
+%% @see ann_c_receive/4
+%% @see update_c_receive/4
+%% @see is_c_receive/1
+%% @see receive_clauses/1
+%% @see receive_timeout/1
+%% @see receive_action/1
+
+-record('receive', {ann = [], clauses, timeout, action}).
+
+c_receive(Clauses, Timeout, Action) ->
+ #'receive'{clauses = Clauses, timeout = Timeout, action = Action}.
+
+
+%% @spec ann_c_receive(As::[term()], Clauses::[cerl()]) -> cerl()
+%% @equiv ann_c_receive(As, Clauses, c_atom(infinity), c_atom(true))
+%% @see c_receive/3
+%% @see c_atom/1
+
+ann_c_receive(As, Clauses) ->
+ ann_c_receive(As, Clauses, c_atom(infinity), c_atom(true)).
+
+
+%% @spec ann_c_receive(As::[term()], Clauses::[cerl()],
+%% Timeout::cerl(), Action::cerl()) -> cerl()
+%% @see ann_c_receive/2
+%% @see c_receive/3
+
+ann_c_receive(As, Clauses, Timeout, Action) ->
+ #'receive'{clauses = Clauses, timeout = Timeout, action = Action,
+ ann = As}.
+
+
+%% @spec update_c_receive(Old::cerl(), Clauses::[cerl()],
+%% Timeout::cerl(), Action::cerl()) -> cerl()
+%% @see c_receive/3
+
+update_c_receive(Node, Clauses, Timeout, Action) ->
+ #'receive'{clauses = Clauses, timeout = Timeout, action = Action,
+ ann = get_ann(Node)}.
+
+
+%% @spec is_c_receive(Node::cerl()) -> boolean()
+%%
+%% @doc Returns <code>true</code> if <code>Node</code> is an abstract
+%% receive-expression, otherwise <code>false</code>.
+%%
+%% @see c_receive/3
+
+is_c_receive(#'receive'{}) ->
+ true;
+is_c_receive(_) ->
+ false.
+
+
+%% @spec receive_clauses(cerl()) -> [cerl()]
+%%
+%% @doc Returns the list of clause subtrees of an abstract
+%% receive-expression.
+%%
+%% @see c_receive/3
+
+receive_clauses(Node) ->
+ Node#'receive'.clauses.
+
+
+%% @spec receive_timeout(cerl()) -> cerl()
+%%
+%% @doc Returns the timeout subtree of an abstract receive-expression.
+%%
+%% @see c_receive/3
+
+receive_timeout(Node) ->
+ Node#'receive'.timeout.
+
+
+%% @spec receive_action(cerl()) -> cerl()
+%%
+%% @doc Returns the action subtree of an abstract receive-expression.
+%%
+%% @see c_receive/3
+
+receive_action(Node) ->
+ Node#'receive'.action.
+
+
+%% ---------------------------------------------------------------------
+
+%% @spec c_apply(Operator::cerl(), Arguments::[cerl()]) -> cerl()
+%%
+%% @doc Creates an abstract function application. If
+%% <code>Arguments</code> is <code>[A1, ..., An]</code>, the result
+%% represents "<code>apply <em>Operator</em>(<em>A1</em>, ...,
+%% <em>An</em>)</code>".
+%%
+%% @see ann_c_apply/3
+%% @see update_c_apply/3
+%% @see is_c_apply/1
+%% @see apply_op/1
+%% @see apply_args/1
+%% @see apply_arity/1
+%% @see c_call/3
+%% @see c_primop/2
+
+-record(apply, {ann = [], op, args}).
+
+c_apply(Operator, Arguments) ->
+ #apply{op = Operator, args = Arguments}.
+
+
+%% @spec ann_c_apply(As::[term()], Operator::cerl(),
+%% Arguments::[cerl()]) -> cerl()
+%% @see c_apply/2
+
+ann_c_apply(As, Operator, Arguments) ->
+ #apply{op = Operator, args = Arguments, ann = As}.
+
+
+%% @spec update_c_apply(Old::cerl(), Operator::cerl(),
+%% Arguments::[cerl()]) -> cerl()
+%% @see c_apply/2
+
+update_c_apply(Node, Operator, Arguments) ->
+ #apply{op = Operator, args = Arguments, ann = get_ann(Node)}.
+
+
+%% @spec is_c_apply(Node::cerl()) -> boolean()
+%%
+%% @doc Returns <code>true</code> if <code>Node</code> is an abstract
+%% function application, otherwise <code>false</code>.
+%%
+%% @see c_apply/2
+
+is_c_apply(#apply{}) ->
+ true;
+is_c_apply(_) ->
+ false.
+
+
+%% @spec apply_op(cerl()) -> cerl()
+%%
+%% @doc Returns the operator subtree of an abstract function
+%% application.
+%%
+%% @see c_apply/2
+
+apply_op(Node) ->
+ Node#apply.op.
+
+
+%% @spec apply_args(cerl()) -> [cerl()]
+%%
+%% @doc Returns the list of argument subtrees of an abstract function
+%% application.
+%%
+%% @see c_apply/2
+%% @see apply_arity/1
+
+apply_args(Node) ->
+ Node#apply.args.
+
+
+%% @spec apply_arity(Node::cerl()) -> integer()
+%%
+%% @doc Returns the number of argument subtrees of an abstract
+%% function application.
+%%
+%% <p>Note: this is equivalent to
+%% <code>length(apply_args(Node))</code>, but potentially more
+%% efficient.</p>
+%%
+%% @see c_apply/2
+%% @see apply_args/1
+
+apply_arity(Node) ->
+ length(apply_args(Node)).
+
+
+%% ---------------------------------------------------------------------
+
+%% @spec c_call(Module::cerl(), Name::cerl(), Arguments::[cerl()]) ->
+%% cerl()
+%%
+%% @doc Creates an abstract inter-module call. If
+%% <code>Arguments</code> is <code>[A1, ..., An]</code>, the result
+%% represents "<code>call <em>Module</em>:<em>Name</em>(<em>A1</em>,
+%% ..., <em>An</em>)</code>".
+%%
+%% @see ann_c_call/4
+%% @see update_c_call/4
+%% @see is_c_call/1
+%% @see call_module/1
+%% @see call_name/1
+%% @see call_args/1
+%% @see call_arity/1
+%% @see c_apply/2
+%% @see c_primop/2
+
+-record(call, {ann = [], module, name, args}).
+
+c_call(Module, Name, Arguments) ->
+ #call{module = Module, name = Name, args = Arguments}.
+
+
+%% @spec ann_c_call(As::[term()], Module::cerl(), Name::cerl(),
+%% Arguments::[cerl()]) -> cerl()
+%% @see c_call/3
+
+ann_c_call(As, Module, Name, Arguments) ->
+ #call{module = Module, name = Name, args = Arguments, ann = As}.
+
+
+%% @spec update_c_call(Old::cerl(), Module::cerl(), Name::cerl(),
+%% Arguments::[cerl()]) -> cerl()
+%% @see c_call/3
+
+update_c_call(Node, Module, Name, Arguments) ->
+ #call{module = Module, name = Name, args = Arguments,
+ ann = get_ann(Node)}.
+
+
+%% @spec is_c_call(Node::cerl()) -> boolean()
+%%
+%% @doc Returns <code>true</code> if <code>Node</code> is an abstract
+%% inter-module call expression; otherwise <code>false</code>.
+%%
+%% @see c_call/3
+
+is_c_call(#call{}) ->
+ true;
+is_c_call(_) ->
+ false.
+
+
+%% @spec call_module(cerl()) -> cerl()
+%%
+%% @doc Returns the module subtree of an abstract inter-module call.
+%%
+%% @see c_call/3
+
+call_module(Node) ->
+ Node#call.module.
+
+
+%% @spec call_name(cerl()) -> cerl()
+%%
+%% @doc Returns the name subtree of an abstract inter-module call.
+%%
+%% @see c_call/3
+
+call_name(Node) ->
+ Node#call.name.
+
+
+%% @spec call_args(cerl()) -> [cerl()]
+%%
+%% @doc Returns the list of argument subtrees of an abstract
+%% inter-module call.
+%%
+%% @see c_call/3
+%% @see call_arity/1
+
+call_args(Node) ->
+ Node#call.args.
+
+
+%% @spec call_arity(Node::cerl()) -> integer()
+%%
+%% @doc Returns the number of argument subtrees of an abstract
+%% inter-module call.
+%%
+%% <p>Note: this is equivalent to
+%% <code>length(call_args(Node))</code>, but potentially more
+%% efficient.</p>
+%%
+%% @see c_call/3
+%% @see call_args/1
+
+call_arity(Node) ->
+ length(call_args(Node)).
+
+
+%% ---------------------------------------------------------------------
+
+%% @spec c_primop(Name::cerl(), Arguments::[cerl()]) -> cerl()
+%%
+%% @doc Creates an abstract primitive operation call. If
+%% <code>Arguments</code> is <code>[A1, ..., An]</code>, the result
+%% represents "<code>primop <em>Name</em>(<em>A1</em>, ...,
+%% <em>An</em>)</code>". <code>Name</code> must be an atom literal.
+%%
+%% @see ann_c_primop/3
+%% @see update_c_primop/3
+%% @see is_c_primop/1
+%% @see primop_name/1
+%% @see primop_args/1
+%% @see primop_arity/1
+%% @see c_apply/2
+%% @see c_call/3
+
+-record(primop, {ann = [], name, args}).
+
+c_primop(Name, Arguments) ->
+ #primop{name = Name, args = Arguments}.
+
+
+%% @spec ann_c_primop(As::[term()], Name::cerl(),
+%% Arguments::[cerl()]) -> cerl()
+%% @see c_primop/2
+
+ann_c_primop(As, Name, Arguments) ->
+ #primop{name = Name, args = Arguments, ann = As}.
+
+
+%% @spec update_c_primop(Old::cerl(), Name::cerl(),
+%% Arguments::[cerl()]) -> cerl()
+%% @see c_primop/2
+
+update_c_primop(Node, Name, Arguments) ->
+ #primop{name = Name, args = Arguments, ann = get_ann(Node)}.
+
+
+%% @spec is_c_primop(Node::cerl()) -> boolean()
+%%
+%% @doc Returns <code>true</code> if <code>Node</code> is an abstract
+%% primitive operation call, otherwise <code>false</code>.
+%%
+%% @see c_primop/2
+
+is_c_primop(#primop{}) ->
+ true;
+is_c_primop(_) ->
+ false.
+
+
+%% @spec primop_name(cerl()) -> cerl()
+%%
+%% @doc Returns the name subtree of an abstract primitive operation
+%% call.
+%%
+%% @see c_primop/2
+
+primop_name(Node) ->
+ Node#primop.name.
+
+
+%% @spec primop_args(cerl()) -> [cerl()]
+%%
+%% @doc Returns the list of argument subtrees of an abstract primitive
+%% operation call.
+%%
+%% @see c_primop/2
+%% @see primop_arity/1
+
+primop_args(Node) ->
+ Node#primop.args.
+
+
+%% @spec primop_arity(Node::cerl()) -> integer()
+%%
+%% @doc Returns the number of argument subtrees of an abstract
+%% primitive operation call.
+%%
+%% <p>Note: this is equivalent to
+%% <code>length(primop_args(Node))</code>, but potentially more
+%% efficient.</p>
+%%
+%% @see c_primop/2
+%% @see primop_args/1
+
+primop_arity(Node) ->
+ length(primop_args(Node)).
+
+
+%% ---------------------------------------------------------------------
+
+%% @spec c_try(Argument::cerl(), Variables::[cerl()], Body::cerl(),
+%% ExceptionVars::[cerl()], Handler::cerl()) -> cerl()
+%%
+%% @doc Creates an abstract try-expression. If <code>Variables</code> is
+%% <code>[V1, ..., Vn]</code> and <code>ExceptionVars</code> is
+%% <code>[X1, ..., Xm]</code>, the result represents "<code>try
+%% <em>Argument</em> of &lt;<em>V1</em>, ..., <em>Vn</em>&gt; ->
+%% <em>Body</em> catch &lt;<em>X1</em>, ..., <em>Xm</em>&gt; ->
+%% <em>Handler</em></code>". All the <code>Vi</code> and <code>Xi</code>
+%% must have type <code>var</code>.
+%%
+%% @see ann_c_try/6
+%% @see update_c_try/6
+%% @see is_c_try/1
+%% @see try_arg/1
+%% @see try_vars/1
+%% @see try_body/1
+%% @see c_catch/1
+
+-record('try', {ann = [], arg, vars, body, evars, handler}).
+
+c_try(Expr, Vs, Body, Evs, Handler) ->
+ #'try'{arg = Expr, vars = Vs, body = Body,
+ evars = Evs, handler = Handler}.
+
+
+%% @spec ann_c_try(As::[term()], Expression::cerl(),
+%% Variables::[cerl()], Body::cerl(),
+%% EVars::[cerl()], EBody::[cerl()]) -> cerl()
+%% @see c_try/3
+
+ann_c_try(As, Expr, Vs, Body, Evs, Handler) ->
+ #'try'{arg = Expr, vars = Vs, body = Body,
+ evars = Evs, handler = Handler, ann = As}.
+
+
+%% @spec update_c_try(Old::cerl(), Expression::cerl(),
+%% Variables::[cerl()], Body::cerl(),
+%% EVars::[cerl()], EBody::[cerl()]) -> cerl()
+%% @see c_try/3
+
+update_c_try(Node, Expr, Vs, Body, Evs, Handler) ->
+ #'try'{arg = Expr, vars = Vs, body = Body,
+ evars = Evs, handler = Handler, ann = get_ann(Node)}.
+
+
+%% @spec is_c_try(Node::cerl()) -> boolean()
+%%
+%% @doc Returns <code>true</code> if <code>Node</code> is an abstract
+%% try-expression, otherwise <code>false</code>.
+%%
+%% @see c_try/3
+
+is_c_try(#'try'{}) ->
+ true;
+is_c_try(_) ->
+ false.
+
+
+%% @spec try_arg(cerl()) -> cerl()
+%%
+%% @doc Returns the expression subtree of an abstract try-expression.
+%%
+%% @see c_try/3
+
+try_arg(Node) ->
+ Node#'try'.arg.
+
+
+%% @spec try_vars(cerl()) -> [cerl()]
+%%
+%% @doc Returns the list of success variable subtrees of an abstract
+%% try-expression.
+%%
+%% @see c_try/3
+
+try_vars(Node) ->
+ Node#'try'.vars.
+
+
+%% @spec try_body(cerl()) -> cerl()
+%%
+%% @doc Returns the success body subtree of an abstract try-expression.
+%%
+%% @see c_try/3
+
+try_body(Node) ->
+ Node#'try'.body.
+
+
+%% @spec try_evars(cerl()) -> [cerl()]
+%%
+%% @doc Returns the list of exception variable subtrees of an abstract
+%% try-expression.
+%%
+%% @see c_try/3
+
+try_evars(Node) ->
+ Node#'try'.evars.
+
+
+%% @spec try_handler(cerl()) -> cerl()
+%%
+%% @doc Returns the exception body subtree of an abstract
+%% try-expression.
+%%
+%% @see c_try/3
+
+try_handler(Node) ->
+ Node#'try'.handler.
+
+
+%% ---------------------------------------------------------------------
+
+%% @spec c_catch(Body::cerl()) -> cerl()
+%%
+%% @doc Creates an abstract catch-expression. The result represents
+%% "<code>catch <em>Body</em></code>".
+%%
+%% <p>Note: catch-expressions can be rewritten as try-expressions, and
+%% will eventually be removed from Core Erlang.</p>
+%%
+%% @see ann_c_catch/2
+%% @see update_c_catch/2
+%% @see is_c_catch/1
+%% @see catch_body/1
+%% @see c_try/3
+
+-record('catch', {ann = [], body}).
+
+c_catch(Body) ->
+ #'catch'{body = Body}.
+
+
+%% @spec ann_c_catch(As::[term()], Body::cerl()) -> cerl()
+%% @see c_catch/1
+
+ann_c_catch(As, Body) ->
+ #'catch'{body = Body, ann = As}.
+
+
+%% @spec update_c_catch(Old::cerl(), Body::cerl()) -> cerl()
+%% @see c_catch/1
+
+update_c_catch(Node, Body) ->
+ #'catch'{body = Body, ann = get_ann(Node)}.
+
+
+%% @spec is_c_catch(Node::cerl()) -> boolean()
+%%
+%% @doc Returns <code>true</code> if <code>Node</code> is an abstract
+%% catch-expression, otherwise <code>false</code>.
+%%
+%% @see c_catch/1
+
+is_c_catch(#'catch'{}) ->
+ true;
+is_c_catch(_) ->
+ false.
+
+
+%% @spec catch_body(Node::cerl()) -> cerl()
+%%
+%% @doc Returns the body subtree of an abstract catch-expression.
+%%
+%% @see c_catch/1
+
+catch_body(Node) ->
+ Node#'catch'.body.
+
+
+%% ---------------------------------------------------------------------
+
+%% @spec to_records(Tree::cerl()) -> record(record_types())
+%%
+%% @doc Translates an abstract syntax tree to a corresponding explicit
+%% record representation. The records are defined in the file
+%% "<code>cerl.hrl</code>".
+%%
+%% <p>Note: Compound constant literals are always unfolded in the
+%% record representation.</p>
+%%
+%% @see type/1
+%% @see from_records/1
+
+to_records(Node) ->
+ A = get_ann(Node),
+ case type(Node) of
+ literal ->
+ lit_to_records(concrete(Node), A);
+ binary ->
+ #c_binary{anno = A,
+ segments =
+ list_to_records(binary_segments(Node))};
+ bitstr ->
+ #c_bitstr{anno = A,
+ val = to_records(bitstr_val(Node)),
+ size = to_records(bitstr_size(Node)),
+ unit = to_records(bitstr_unit(Node)),
+ type = to_records(bitstr_type(Node)),
+ flags = to_records(bitstr_flags(Node))};
+ cons ->
+ #c_cons{anno = A,
+ hd = to_records(cons_hd(Node)),
+ tl = to_records(cons_tl(Node))};
+ tuple ->
+ #c_tuple{anno = A,
+ es = list_to_records(tuple_es(Node))};
+ var ->
+ case is_c_fname(Node) of
+ true ->
+ #c_fname{anno = A,
+ id = fname_id(Node),
+ arity = fname_arity(Node)};
+ false ->
+ #c_var{anno = A, name = var_name(Node)}
+ end;
+ values ->
+ #c_values{anno = A,
+ es = list_to_records(values_es(Node))};
+ 'fun' ->
+ #c_fun{anno = A,
+ vars = list_to_records(fun_vars(Node)),
+ body = to_records(fun_body(Node))};
+ seq ->
+ #c_seq{anno = A,
+ arg = to_records(seq_arg(Node)),
+ body = to_records(seq_body(Node))};
+ 'let' ->
+ #c_let{anno = A,
+ vars = list_to_records(let_vars(Node)),
+ arg = to_records(let_arg(Node)),
+ body = to_records(let_body(Node))};
+ letrec ->
+ #c_letrec{anno = A,
+ defs = [#c_def{name = to_records(N),
+ val = to_records(F)}
+ || {N, F} <- letrec_defs(Node)],
+ body = to_records(letrec_body(Node))};
+ 'case' ->
+ #c_case{anno = A,
+ arg = to_records(case_arg(Node)),
+ clauses =
+ list_to_records(case_clauses(Node))};
+ clause ->
+ #c_clause{anno = A,
+ pats = list_to_records(clause_pats(Node)),
+ guard = to_records(clause_guard(Node)),
+ body = to_records(clause_body(Node))};
+ alias ->
+ #c_alias{anno = A,
+ var = to_records(alias_var(Node)),
+ pat = to_records(alias_pat(Node))};
+ 'receive' ->
+ #c_receive{anno = A,
+ clauses =
+ list_to_records(receive_clauses(Node)),
+ timeout =
+ to_records(receive_timeout(Node)),
+ action =
+ to_records(receive_action(Node))};
+ apply ->
+ #c_apply{anno = A,
+ op = to_records(apply_op(Node)),
+ args = list_to_records(apply_args(Node))};
+ call ->
+ #c_call{anno = A,
+ module = to_records(call_module(Node)),
+ name = to_records(call_name(Node)),
+ args = list_to_records(call_args(Node))};
+ primop ->
+ #c_primop{anno = A,
+ name = to_records(primop_name(Node)),
+ args = list_to_records(primop_args(Node))};
+ 'try' ->
+ #c_try{anno = A,
+ arg = to_records(try_arg(Node)),
+ vars = list_to_records(try_vars(Node)),
+ body = to_records(try_body(Node)),
+ evars = list_to_records(try_evars(Node)),
+ handler = to_records(try_handler(Node))};
+ 'catch' ->
+ #c_catch{anno = A,
+ body = to_records(catch_body(Node))};
+ module ->
+ #c_module{anno = A,
+ name = to_records(module_name(Node)),
+ exports = list_to_records(
+ module_exports(Node)),
+ attrs = [#c_def{name = to_records(K),
+ val = to_records(V)}
+ || {K, V} <- module_attrs(Node)],
+ defs = [#c_def{name = to_records(N),
+ val = to_records(F)}
+ || {N, F} <- module_defs(Node)]}
+ end.
+
+list_to_records([T | Ts]) ->
+ [to_records(T) | list_to_records(Ts)];
+list_to_records([]) ->
+ [].
+
+lit_to_records(V, A) when integer(V) ->
+ #c_int{anno = A, val = V};
+lit_to_records(V, A) when float(V) ->
+ #c_float{anno = A, val = V};
+lit_to_records(V, A) when atom(V) ->
+ #c_atom{anno = A, val = V};
+lit_to_records([H | T] = V, A) ->
+ case is_print_char_list(V) of
+ true ->
+ #c_string{anno = A, val = V};
+ false ->
+ #c_cons{anno = A,
+ hd = lit_to_records(H, []),
+ tl = lit_to_records(T, [])}
+ end;
+lit_to_records([], A) ->
+ #c_nil{anno = A};
+lit_to_records(V, A) when tuple(V) ->
+ #c_tuple{anno = A, es = lit_list_to_records(tuple_to_list(V))}.
+
+lit_list_to_records([T | Ts]) ->
+ [lit_to_records(T, []) | lit_list_to_records(Ts)];
+lit_list_to_records([]) ->
+ [].
+
+
+%% @spec from_records(Tree::record(record_types())) -> cerl()
+%%
+%% record_types() = c_alias | c_apply | c_call | c_case | c_catch |
+%% c_clause | c_cons | c_def| c_fun | c_let |
+%% c_letrec |c_lit | c_module | c_primop |
+%% c_receive | c_seq | c_try | c_tuple |
+%% c_values | c_var
+%%
+%% @doc Translates an explicit record representation to a
+%% corresponding abstract syntax tree. The records are defined in the
+%% file "<code>cerl.hrl</code>".
+%%
+%% <p>Note: Compound constant literals are folded, discarding
+%% annotations on subtrees. There are no <code>c_def</code> nodes in
+%% the abstract representation; annotations on <code>c_def</code>
+%% records are discarded.</p>
+%%
+%% @see type/1
+%% @see to_records/1
+
+from_records(#c_int{val = V, anno = As}) ->
+ ann_c_int(As, V);
+from_records(#c_float{val = V, anno = As}) ->
+ ann_c_float(As, V);
+from_records(#c_atom{val = V, anno = As}) ->
+ ann_c_atom(As, V);
+from_records(#c_char{val = V, anno = As}) ->
+ ann_c_char(As, V);
+from_records(#c_string{val = V, anno = As}) ->
+ ann_c_string(As, V);
+from_records(#c_nil{anno = As}) ->
+ ann_c_nil(As);
+from_records(#c_binary{segments = Ss, anno = As}) ->
+ ann_c_binary(As, from_records_list(Ss));
+from_records(#c_bitstr{val = V, size = S, unit = U, type = T,
+ flags = Fs, anno = As}) ->
+ ann_c_bitstr(As, from_records(V), from_records(S), from_records(U),
+ from_records(T), from_records(Fs));
+from_records(#c_cons{hd = H, tl = T, anno = As}) ->
+ ann_c_cons(As, from_records(H), from_records(T));
+from_records(#c_tuple{es = Es, anno = As}) ->
+ ann_c_tuple(As, from_records_list(Es));
+from_records(#c_var{name = Name, anno = As}) ->
+ ann_c_var(As, Name);
+from_records(#c_fname{id = Id, arity = Arity, anno = As}) ->
+ ann_c_fname(As, Id, Arity);
+from_records(#c_values{es = Es, anno = As}) ->
+ ann_c_values(As, from_records_list(Es));
+from_records(#c_fun{vars = Vs, body = B, anno = As}) ->
+ ann_c_fun(As, from_records_list(Vs), from_records(B));
+from_records(#c_seq{arg = A, body = B, anno = As}) ->
+ ann_c_seq(As, from_records(A), from_records(B));
+from_records(#c_let{vars = Vs, arg = A, body = B, anno = As}) ->
+ ann_c_let(As, from_records_list(Vs), from_records(A),
+ from_records(B));
+from_records(#c_letrec{defs = Fs, body = B, anno = As}) ->
+ ann_c_letrec(As, [{from_records(N), from_records(F)}
+ || #c_def{name = N, val = F} <- Fs],
+ from_records(B));
+from_records(#c_case{arg = A, clauses = Cs, anno = As}) ->
+ ann_c_case(As, from_records(A), from_records_list(Cs));
+from_records(#c_clause{pats = Ps, guard = G, body = B, anno = As}) ->
+ ann_c_clause(As, from_records_list(Ps), from_records(G),
+ from_records(B));
+from_records(#c_alias{var = V, pat = P, anno = As}) ->
+ ann_c_alias(As, from_records(V), from_records(P));
+from_records(#c_receive{clauses = Cs, timeout = T, action = A,
+ anno = As}) ->
+ ann_c_receive(As, from_records_list(Cs), from_records(T),
+ from_records(A));
+from_records(#c_apply{op = Op, args = Es, anno = As}) ->
+ ann_c_apply(As, from_records(Op), from_records_list(Es));
+from_records(#c_call{module = M, name = N, args = Es, anno = As}) ->
+ ann_c_call(As, from_records(M), from_records(N),
+ from_records_list(Es));
+from_records(#c_primop{name = N, args = Es, anno = As}) ->
+ ann_c_primop(As, from_records(N), from_records_list(Es));
+from_records(#c_try{arg = E, vars = Vs, body = B,
+ evars = Evs, handler = H, anno = As}) ->
+ ann_c_try(As, from_records(E), from_records_list(Vs),
+ from_records(B), from_records_list(Evs), from_records(H));
+from_records(#c_catch{body = B, anno = As}) ->
+ ann_c_catch(As, from_records(B));
+from_records(#c_module{name = N, exports = Es, attrs = Ds, defs = Fs,
+ anno = As}) ->
+ ann_c_module(As, from_records(N),
+ from_records_list(Es),
+ [{from_records(K), from_records(V)}
+ || #c_def{name = K, val = V} <- Ds],
+ [{from_records(V), from_records(F)}
+ || #c_def{name = V, val = F} <- Fs]).
+
+from_records_list([T | Ts]) ->
+ [from_records(T) | from_records_list(Ts)];
+from_records_list([]) ->
+ [].
+
+
+%% ---------------------------------------------------------------------
+
+%% @spec is_data(Node::cerl()) -> boolean()
+%%
+%% @doc Returns <code>true</code> if <code>Node</code> represents a
+%% data constructor, otherwise <code>false</code>. Data constructors
+%% are cons cells, tuples, and atomic literals.
+%%
+%% @see data_type/1
+%% @see data_es/1
+%% @see data_arity/1
+
+is_data(#literal{}) ->
+ true;
+is_data(#cons{}) ->
+ true;
+is_data(#tuple{}) ->
+ true;
+is_data(_) ->
+ false.
+
+
+%% @spec data_type(Node::cerl()) -> dtype()
+%%
+%% dtype() = cons | tuple | {'atomic', Value}
+%% Value = integer() | float() | atom() | []
+%%
+%% @doc Returns a type descriptor for a data constructor
+%% node. (Cf. <code>is_data/1</code>.) This is mainly useful for
+%% comparing types and for constructing new nodes of the same type
+%% (cf. <code>make_data/2</code>). If <code>Node</code> represents an
+%% integer, floating-point number, atom or empty list, the result is
+%% <code>{'atomic', Value}</code>, where <code>Value</code> is the value
+%% of <code>concrete(Node)</code>, otherwise the result is either
+%% <code>cons</code> or <code>tuple</code>.
+%%
+%% <p>Type descriptors can be compared for equality or order (in the
+%% Erlang term order), but remember that floating-point values should
+%% in general never be tested for equality.</p>
+%%
+%% @see is_data/1
+%% @see make_data/2
+%% @see type/1
+%% @see concrete/1
+
+data_type(#literal{val = V}) ->
+ case V of
+ [_ | _] ->
+ cons;
+ _ when tuple(V) ->
+ tuple;
+ _ ->
+ {'atomic', V}
+ end;
+data_type(#cons{}) ->
+ cons;
+data_type(#tuple{}) ->
+ tuple.
+
+
+%% @spec data_es(Node::cerl()) -> [cerl()]
+%%
+%% @doc Returns the list of subtrees of a data constructor node. If
+%% the arity of the constructor is zero, the result is the empty list.
+%%
+%% <p>Note: if <code>data_type(Node)</code> is <code>cons</code>, the
+%% number of subtrees is exactly two. If <code>data_type(Node)</code>
+%% is <code>{'atomic', Value}</code>, the number of subtrees is
+%% zero.</p>
+%%
+%% @see is_data/1
+%% @see data_type/1
+%% @see data_arity/1
+%% @see make_data/2
+
+data_es(#literal{val = V}) ->
+ case V of
+ [Head | Tail] ->
+ [#literal{val = Head}, #literal{val = Tail}];
+ _ when tuple(V) ->
+ make_lit_list(tuple_to_list(V));
+ _ ->
+ []
+ end;
+data_es(#cons{hd = H, tl = T}) ->
+ [H, T];
+data_es(#tuple{es = Es}) ->
+ Es.
+
+
+%% @spec data_arity(Node::cerl()) -> integer()
+%%
+%% @doc Returns the number of subtrees of a data constructor
+%% node. This is equivalent to <code>length(data_es(Node))</code>, but
+%% potentially more efficient.
+%%
+%% @see is_data/1
+%% @see data_es/1
+
+data_arity(#literal{val = V}) ->
+ case V of
+ [_ | _] ->
+ 2;
+ _ when tuple(V) ->
+ size(V);
+ _ ->
+ 0
+ end;
+data_arity(#cons{}) ->
+ 2;
+data_arity(#tuple{es = Es}) ->
+ length(Es).
+
+
+%% @spec make_data(Type::dtype(), Elements::[cerl()]) -> cerl()
+%%
+%% @doc Creates a data constructor node with the specified type and
+%% subtrees. (Cf. <code>data_type/1</code>.) An exception is thrown
+%% if the length of <code>Elements</code> is invalid for the given
+%% <code>Type</code>; see <code>data_es/1</code> for arity constraints
+%% on constructor types.
+%%
+%% @see data_type/1
+%% @see data_es/1
+%% @see ann_make_data/3
+%% @see update_data/3
+%% @see make_data_skel/2
+
+make_data(CType, Es) ->
+ ann_make_data([], CType, Es).
+
+
+%% @spec ann_make_data(As::[term()], Type::dtype(),
+%% Elements::[cerl()]) -> cerl()
+%% @see make_data/2
+
+ann_make_data(As, {'atomic', V}, []) -> #literal{val = V, ann = As};
+ann_make_data(As, cons, [H, T]) -> ann_c_cons(As, H, T);
+ann_make_data(As, tuple, Es) -> ann_c_tuple(As, Es).
+
+
+%% @spec update_data(Old::cerl(), Type::dtype(),
+%% Elements::[cerl()]) -> cerl()
+%% @see make_data/2
+
+update_data(Node, CType, Es) ->
+ ann_make_data(get_ann(Node), CType, Es).
+
+
+%% @spec make_data_skel(Type::dtype(), Elements::[cerl()]) -> cerl()
+%%
+%% @doc Like <code>make_data/2</code>, but analogous to
+%% <code>c_tuple_skel/1</code> and <code>c_cons_skel/2</code>.
+%%
+%% @see ann_make_data_skel/3
+%% @see update_data_skel/3
+%% @see make_data/2
+%% @see c_tuple_skel/1
+%% @see c_cons_skel/2
+
+make_data_skel(CType, Es) ->
+ ann_make_data_skel([], CType, Es).
+
+
+%% @spec ann_make_data_skel(As::[term()], Type::dtype(),
+%% Elements::[cerl()]) -> cerl()
+%% @see make_data_skel/2
+
+ann_make_data_skel(As, {'atomic', V}, []) -> #literal{val = V, ann = As};
+ann_make_data_skel(As, cons, [H, T]) -> ann_c_cons_skel(As, H, T);
+ann_make_data_skel(As, tuple, Es) -> ann_c_tuple_skel(As, Es).
+
+
+%% @spec update_data_skel(Old::cerl(), Type::dtype(),
+%% Elements::[cerl()]) -> cerl()
+%% @see make_data_skel/2
+
+update_data_skel(Node, CType, Es) ->
+ ann_make_data_skel(get_ann(Node), CType, Es).
+
+
+%% ---------------------------------------------------------------------
+
+%% @spec subtrees(Node::cerl()) -> [[cerl()]]
+%%
+%% @doc Returns the grouped list of all subtrees of a node. If
+%% <code>Node</code> is a leaf node (cf. <code>is_leaf/1</code>), this
+%% is the empty list, otherwise the result is always a nonempty list,
+%% containing the lists of subtrees of <code>Node</code>, in
+%% left-to-right order as they occur in the printed program text, and
+%% grouped by category. Often, each group contains only a single
+%% subtree.
+%%
+%% <p>Depending on the type of <code>Node</code>, the size of some
+%% groups may be variable (e.g., the group consisting of all the
+%% elements of a tuple), while others always contain the same number
+%% of elements - usually exactly one (e.g., the group containing the
+%% argument expression of a case-expression). Note, however, that the
+%% exact structure of the returned list (for a given node type) should
+%% in general not be depended upon, since it might be subject to
+%% change without notice.</p>
+%%
+%% <p>The function <code>subtrees/1</code> and the constructor functions
+%% <code>make_tree/2</code> and <code>update_tree/2</code> can be a
+%% great help if one wants to traverse a syntax tree, visiting all its
+%% subtrees, but treat nodes of the tree in a uniform way in most or all
+%% cases. Using these functions makes this simple, and also assures that
+%% your code is not overly sensitive to extensions of the syntax tree
+%% data type, because any node types not explicitly handled by your code
+%% can be left to a default case.</p>
+%%
+%% <p>For example:
+%% <pre>
+%% postorder(F, Tree) ->
+%% F(case subtrees(Tree) of
+%% [] -> Tree;
+%% List -> update_tree(Tree,
+%% [[postorder(F, Subtree)
+%% || Subtree &lt;- Group]
+%% || Group &lt;- List])
+%% end).
+%% </pre>
+%% maps the function <code>F</code> on <code>Tree</code> and all its
+%% subtrees, doing a post-order traversal of the syntax tree. (Note
+%% the use of <code>update_tree/2</code> to preserve annotations.) For
+%% a simple function like:
+%% <pre>
+%% f(Node) ->
+%% case type(Node) of
+%% atom -> atom("a_" ++ atom_name(Node));
+%% _ -> Node
+%% end.
+%% </pre>
+%% the call <code>postorder(fun f/1, Tree)</code> will yield a new
+%% representation of <code>Tree</code> in which all atom names have
+%% been extended with the prefix "a_", but nothing else (including
+%% annotations) has been changed.</p>
+%%
+%% @see is_leaf/1
+%% @see make_tree/2
+%% @see update_tree/2
+
+subtrees(T) ->
+ case is_leaf(T) of
+ true ->
+ [];
+ false ->
+ case type(T) of
+ values ->
+ [values_es(T)];
+ binary ->
+ [binary_segments(T)];
+ bitstr ->
+ [[bitstr_val(T)], [bitstr_size(T)],
+ [bitstr_unit(T)], [bitstr_type(T)],
+ [bitstr_flags(T)]];
+ cons ->
+ [[cons_hd(T)], [cons_tl(T)]];
+ tuple ->
+ [tuple_es(T)];
+ 'let' ->
+ [let_vars(T), [let_arg(T)], [let_body(T)]];
+ seq ->
+ [[seq_arg(T)], [seq_body(T)]];
+ apply ->
+ [[apply_op(T)], apply_args(T)];
+ call ->
+ [[call_module(T)], [call_name(T)],
+ call_args(T)];
+ primop ->
+ [[primop_name(T)], primop_args(T)];
+ 'case' ->
+ [[case_arg(T)], case_clauses(T)];
+ clause ->
+ [clause_pats(T), [clause_guard(T)],
+ [clause_body(T)]];
+ alias ->
+ [[alias_var(T)], [alias_pat(T)]];
+ 'fun' ->
+ [fun_vars(T), [fun_body(T)]];
+ 'receive' ->
+ [receive_clauses(T), [receive_timeout(T)],
+ [receive_action(T)]];
+ 'try' ->
+ [[try_arg(T)], try_vars(T), [try_body(T)],
+ try_evars(T), [try_handler(T)]];
+ 'catch' ->
+ [[catch_body(T)]];
+ letrec ->
+ Es = unfold_tuples(letrec_defs(T)),
+ [Es, [letrec_body(T)]];
+ module ->
+ As = unfold_tuples(module_attrs(T)),
+ Es = unfold_tuples(module_defs(T)),
+ [[module_name(T)], module_exports(T), As, Es]
+ end
+ end.
+
+
+%% @spec update_tree(Old::cerl(), Groups::[[cerl()]]) -> cerl()
+%%
+%% @doc Creates a syntax tree with the given subtrees, and the same
+%% type and annotations as the <code>Old</code> node. This is
+%% equivalent to <code>ann_make_tree(get_ann(Node), type(Node),
+%% Groups)</code>, but potentially more efficient.
+%%
+%% @see update_tree/3
+%% @see ann_make_tree/3
+%% @see get_ann/1
+%% @see type/1
+
+update_tree(Node, Gs) ->
+ ann_make_tree(get_ann(Node), type(Node), Gs).
+
+
+%% @spec update_tree(Old::cerl(), Type::atom(), Groups::[[cerl()]]) ->
+%% cerl()
+%%
+%% @doc Creates a syntax tree with the given type and subtrees, and
+%% the same annotations as the <code>Old</code> node. This is
+%% equivalent to <code>ann_make_tree(get_ann(Node), Type,
+%% Groups)</code>, but potentially more efficient.
+%%
+%% @see update_tree/2
+%% @see ann_make_tree/3
+%% @see get_ann/1
+
+update_tree(Node, Type, Gs) ->
+ ann_make_tree(get_ann(Node), Type, Gs).
+
+
+%% @spec make_tree(Type::atom(), Groups::[[cerl()]]) -> cerl()
+%%
+%% @doc Creates a syntax tree with the given type and subtrees.
+%% <code>Type</code> must be a node type name
+%% (cf. <code>type/1</code>) that does not denote a leaf node type
+%% (cf. <code>is_leaf/1</code>). <code>Groups</code> must be a
+%% <em>nonempty</em> list of groups of syntax trees, representing the
+%% subtrees of a node of the given type, in left-to-right order as
+%% they would occur in the printed program text, grouped by category
+%% as done by <code>subtrees/1</code>.
+%%
+%% <p>The result of <code>ann_make_tree(get_ann(Node), type(Node),
+%% subtrees(Node))</code> (cf. <code>update_tree/2</code>) represents
+%% the same source code text as the original <code>Node</code>,
+%% assuming that <code>subtrees(Node)</code> yields a nonempty
+%% list. However, it does not necessarily have the exact same data
+%% representation as <code>Node</code>.</p>
+%%
+%% @see ann_make_tree/3
+%% @see type/1
+%% @see is_leaf/1
+%% @see subtrees/1
+%% @see update_tree/2
+
+make_tree(Type, Gs) ->
+ ann_make_tree([], Type, Gs).
+
+
+%% @spec ann_make_tree(As::[term()], Type::atom(),
+%% Groups::[[cerl()]]) -> cerl()
+%%
+%% @doc Creates a syntax tree with the given annotations, type and
+%% subtrees. See <code>make_tree/2</code> for details.
+%%
+%% @see make_tree/2
+
+ann_make_tree(As, values, [Es]) -> ann_c_values(As, Es);
+ann_make_tree(As, binary, [Ss]) -> ann_c_binary(As, Ss);
+ann_make_tree(As, bitstr, [[V],[S],[U],[T],[Fs]]) ->
+ ann_c_bitstr(As, V, S, U, T, Fs);
+ann_make_tree(As, cons, [[H], [T]]) -> ann_c_cons(As, H, T);
+ann_make_tree(As, tuple, [Es]) -> ann_c_tuple(As, Es);
+ann_make_tree(As, 'let', [Vs, [A], [B]]) -> ann_c_let(As, Vs, A, B);
+ann_make_tree(As, seq, [[A], [B]]) -> ann_c_seq(As, A, B);
+ann_make_tree(As, apply, [[Op], Es]) -> ann_c_apply(As, Op, Es);
+ann_make_tree(As, call, [[M], [N], Es]) -> ann_c_call(As, M, N, Es);
+ann_make_tree(As, primop, [[N], Es]) -> ann_c_primop(As, N, Es);
+ann_make_tree(As, 'case', [[A], Cs]) -> ann_c_case(As, A, Cs);
+ann_make_tree(As, clause, [Ps, [G], [B]]) -> ann_c_clause(As, Ps, G, B);
+ann_make_tree(As, alias, [[V], [P]]) -> ann_c_alias(As, V, P);
+ann_make_tree(As, 'fun', [Vs, [B]]) -> ann_c_fun(As, Vs, B);
+ann_make_tree(As, 'receive', [Cs, [T], [A]]) ->
+ ann_c_receive(As, Cs, T, A);
+ann_make_tree(As, 'try', [[E], Vs, [B], Evs, [H]]) ->
+ ann_c_try(As, E, Vs, B, Evs, H);
+ann_make_tree(As, 'catch', [[B]]) -> ann_c_catch(As, B);
+ann_make_tree(As, letrec, [Es, [B]]) ->
+ ann_c_letrec(As, fold_tuples(Es), B);
+ann_make_tree(As, module, [[N], Xs, Es, Ds]) ->
+ ann_c_module(As, N, Xs, fold_tuples(Es), fold_tuples(Ds)).
+
+
+%% ---------------------------------------------------------------------
+
+%% @spec meta(Tree::cerl()) -> cerl()
+%%
+%% @doc Creates a meta-representation of a syntax tree. The result
+%% represents an Erlang expression "<code><em>MetaTree</em></code>"
+%% which, if evaluated, will yield a new syntax tree representing the
+%% same source code text as <code>Tree</code> (although the actual
+%% data representation may be different). The expression represented
+%% by <code>MetaTree</code> is <em>implementation independent</em>
+%% with regard to the data structures used by the abstract syntax tree
+%% implementation.
+%%
+%% <p>Any node in <code>Tree</code> whose node type is
+%% <code>var</code> (cf. <code>type/1</code>), and whose list of
+%% annotations (cf. <code>get_ann/1</code>) contains the atom
+%% <code>meta_var</code>, will remain unchanged in the resulting tree,
+%% except that exactly one occurrence of <code>meta_var</code> is
+%% removed from its annotation list.</p>
+%%
+%% <p>The main use of the function <code>meta/1</code> is to transform
+%% a data structure <code>Tree</code>, which represents a piece of
+%% program code, into a form that is <em>representation independent
+%% when printed</em>. E.g., suppose <code>Tree</code> represents a
+%% variable named "V". Then (assuming a function <code>print/1</code>
+%% for printing syntax trees), evaluating
+%% <code>print(abstract(Tree))</code> - simply using
+%% <code>abstract/1</code> to map the actual data structure onto a
+%% syntax tree representation - would output a string that might look
+%% something like "<code>{var, ..., 'V'}</code>", which is obviously
+%% dependent on the implementation of the abstract syntax trees. This
+%% could e.g. be useful for caching a syntax tree in a file. However,
+%% in some situations like in a program generator generator (with two
+%% "generator"), it may be unacceptable. Using
+%% <code>print(meta(Tree))</code> instead would output a
+%% <em>representation independent</em> syntax tree generating
+%% expression; in the above case, something like
+%% "<code>cerl:c_var('V')</code>".</p>
+%%
+%% <p>The implementation tries to generate compact code with respect
+%% to literals and lists.</p>
+%%
+%% @see abstract/1
+%% @see type/1
+%% @see get_ann/1
+
+meta(Node) ->
+ %% First of all we check for metavariables:
+ case type(Node) of
+ var ->
+ case lists:member(meta_var, get_ann(Node)) of
+ false ->
+ meta_0(var, Node);
+ true ->
+ %% A meta-variable: remove the first found
+ %% 'meta_var' annotation, but otherwise leave
+ %% the node unchanged.
+ set_ann(Node, lists:delete(meta_var, get_ann(Node)))
+ end;
+ Type ->
+ meta_0(Type, Node)
+ end.
+
+meta_0(Type, Node) ->
+ case get_ann(Node) of
+ [] ->
+ meta_1(Type, Node);
+ As ->
+ meta_call(set_ann, [meta_1(Type, Node), abstract(As)])
+ end.
+
+meta_1(literal, Node) ->
+ %% We handle atomic literals separately, to get a bit
+ %% more compact code. For the rest, we use 'abstract'.
+ case concrete(Node) of
+ V when atom(V) ->
+ meta_call(c_atom, [Node]);
+ V when integer(V) ->
+ meta_call(c_int, [Node]);
+ V when float(V) ->
+ meta_call(c_float, [Node]);
+ [] ->
+ meta_call(c_nil, []);
+ _ ->
+ meta_call(abstract, [Node])
+ end;
+meta_1(var, Node) ->
+ %% A normal variable or function name.
+ meta_call(c_var, [abstract(var_name(Node))]);
+meta_1(values, Node) ->
+ meta_call(c_values,
+ [make_list(meta_list(values_es(Node)))]);
+meta_1(binary, Node) ->
+ meta_call(c_binary,
+ [make_list(meta_list(binary_segments(Node)))]);
+meta_1(bitstr, Node) ->
+ meta_call(c_bitstr,
+ [meta(bitstr_val(Node)),
+ meta(bitstr_size(Node)),
+ meta(bitstr_unit(Node)),
+ meta(bitstr_type(Node)),
+ meta(bitstr_flags(Node))]);
+meta_1(cons, Node) ->
+ %% The list is split up if some sublist has annotatations. If
+ %% we get exactly one element, we generate a 'c_cons' call
+ %% instead of 'make_list' to reconstruct the node.
+ case split_list(Node) of
+ {[H], none} ->
+ meta_call(c_cons, [meta(H), meta(c_nil())]);
+ {[H], Node1} ->
+ meta_call(c_cons, [meta(H), meta(Node1)]);
+ {L, none} ->
+ meta_call(make_list, [make_list(meta_list(L))]);
+ {L, Node1} ->
+ meta_call(make_list,
+ [make_list(meta_list(L)), meta(Node1)])
+ end;
+meta_1(tuple, Node) ->
+ meta_call(c_tuple,
+ [make_list(meta_list(tuple_es(Node)))]);
+meta_1('let', Node) ->
+ meta_call(c_let,
+ [make_list(meta_list(let_vars(Node))),
+ meta(let_arg(Node)), meta(let_body(Node))]);
+meta_1(seq, Node) ->
+ meta_call(c_seq,
+ [meta(seq_arg(Node)), meta(seq_body(Node))]);
+meta_1(apply, Node) ->
+ meta_call(c_apply,
+ [meta(apply_op(Node)),
+ make_list(meta_list(apply_args(Node)))]);
+meta_1(call, Node) ->
+ meta_call(c_call,
+ [meta(call_module(Node)), meta(call_name(Node)),
+ make_list(meta_list(call_args(Node)))]);
+meta_1(primop, Node) ->
+ meta_call(c_primop,
+ [meta(primop_name(Node)),
+ make_list(meta_list(primop_args(Node)))]);
+meta_1('case', Node) ->
+ meta_call(c_case,
+ [meta(case_arg(Node)),
+ make_list(meta_list(case_clauses(Node)))]);
+meta_1(clause, Node) ->
+ meta_call(c_clause,
+ [make_list(meta_list(clause_pats(Node))),
+ meta(clause_guard(Node)),
+ meta(clause_body(Node))]);
+meta_1(alias, Node) ->
+ meta_call(c_alias,
+ [meta(alias_var(Node)), meta(alias_pat(Node))]);
+meta_1('fun', Node) ->
+ meta_call(c_fun,
+ [make_list(meta_list(fun_vars(Node))),
+ meta(fun_body(Node))]);
+meta_1('receive', Node) ->
+ meta_call(c_receive,
+ [make_list(meta_list(receive_clauses(Node))),
+ meta(receive_timeout(Node)),
+ meta(receive_action(Node))]);
+meta_1('try', Node) ->
+ meta_call(c_try,
+ [meta(try_arg(Node)),
+ make_list(meta_list(try_vars(Node))),
+ meta(try_body(Node)),
+ make_list(meta_list(try_evars(Node))),
+ meta(try_handler(Node))]);
+meta_1('catch', Node) ->
+ meta_call(c_catch, [meta(catch_body(Node))]);
+meta_1(letrec, Node) ->
+ meta_call(c_letrec,
+ [make_list([c_tuple([meta(N), meta(F)])
+ || {N, F} <- letrec_defs(Node)]),
+ meta(letrec_body(Node))]);
+meta_1(module, Node) ->
+ meta_call(c_module,
+ [meta(module_name(Node)),
+ make_list(meta_list(module_exports(Node))),
+ make_list([c_tuple([meta(A), meta(V)])
+ || {A, V} <- module_attrs(Node)]),
+ make_list([c_tuple([meta(N), meta(F)])
+ || {N, F} <- module_defs(Node)])]).
+
+meta_call(F, As) ->
+ c_call(c_atom(?MODULE), c_atom(F), As).
+
+meta_list([T | Ts]) ->
+ [meta(T) | meta_list(Ts)];
+meta_list([]) ->
+ [].
+
+split_list(Node) ->
+ split_list(set_ann(Node, []), []).
+
+split_list(Node, L) ->
+ A = get_ann(Node),
+ case type(Node) of
+ cons when A == [] ->
+ split_list(cons_tl(Node), [cons_hd(Node) | L]);
+ nil when A == [] ->
+ {lists:reverse(L), none};
+ _ ->
+ {lists:reverse(L), Node}
+ end.
+
+
+%% ---------------------------------------------------------------------
+
+%% General utilities
+
+is_lit_list([#literal{} | Es]) ->
+ is_lit_list(Es);
+is_lit_list([_ | _]) ->
+ false;
+is_lit_list([]) ->
+ true.
+
+lit_list_vals([#literal{val = V} | Es]) ->
+ [V | lit_list_vals(Es)];
+lit_list_vals([]) ->
+ [].
+
+make_lit_list([V | Vs]) ->
+ [#literal{val = V} | make_lit_list(Vs)];
+make_lit_list([]) ->
+ [].
+
+%% The following tests are the same as done by 'io_lib:char_list' and
+%% 'io_lib:printable_list', respectively, but for a single character.
+
+is_char_value(V) when V >= $\000, V =< $\377 -> true;
+is_char_value(_) -> false.
+
+is_print_char_value(V) when V >= $\040, V =< $\176 -> true;
+is_print_char_value(V) when V >= $\240, V =< $\377 -> true;
+is_print_char_value(V) when V =:= $\b -> true;
+is_print_char_value(V) when V =:= $\d -> true;
+is_print_char_value(V) when V =:= $\e -> true;
+is_print_char_value(V) when V =:= $\f -> true;
+is_print_char_value(V) when V =:= $\n -> true;
+is_print_char_value(V) when V =:= $\r -> true;
+is_print_char_value(V) when V =:= $\s -> true;
+is_print_char_value(V) when V =:= $\t -> true;
+is_print_char_value(V) when V =:= $\v -> true;
+is_print_char_value(V) when V =:= $\" -> true;
+is_print_char_value(V) when V =:= $\' -> true;
+is_print_char_value(V) when V =:= $\\ -> true;
+is_print_char_value(_) -> false.
+
+is_char_list([V | Vs]) when integer(V) ->
+ case is_char_value(V) of
+ true ->
+ is_char_list(Vs);
+ false ->
+ false
+ end;
+is_char_list([]) ->
+ true;
+is_char_list(_) ->
+ false.
+
+is_print_char_list([V | Vs]) when integer(V) ->
+ case is_print_char_value(V) of
+ true ->
+ is_print_char_list(Vs);
+ false ->
+ false
+ end;
+is_print_char_list([]) ->
+ true;
+is_print_char_list(_) ->
+ false.
+
+unfold_tuples([{X, Y} | Ps]) ->
+ [X, Y | unfold_tuples(Ps)];
+unfold_tuples([]) ->
+ [].
+
+fold_tuples([X, Y | Es]) ->
+ [{X, Y} | fold_tuples(Es)];
+fold_tuples([]) ->
+ [].
diff --git a/lib/dialyzer/test/options1_tests_SUITE_data/src/compiler/cerl_clauses.erl b/lib/dialyzer/test/options1_tests_SUITE_data/src/compiler/cerl_clauses.erl
new file mode 100644
index 0000000000..f207178f13
--- /dev/null
+++ b/lib/dialyzer/test/options1_tests_SUITE_data/src/compiler/cerl_clauses.erl
@@ -0,0 +1,409 @@
+%% ``The contents of this file are subject to the Erlang Public License,
+%% Version 1.1, (the "License"); you may not use this file except in
+%% compliance with the License. You should have received a copy of the
+%% Erlang Public License along with this software. If not, it can be
+%% retrieved via the world wide web at http://www.erlang.org/.
+%%
+%% Software distributed under the License is distributed on an "AS IS"
+%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
+%% the License for the specific language governing rights and limitations
+%% under the License.
+%%
+%% The Initial Developer of the Original Code is Richard Carlsson.
+%% Copyright (C) 1999-2002 Richard Carlsson.
+%% Portions created by Ericsson are Copyright 2001, Ericsson Utvecklings
+%% AB. All Rights Reserved.''
+%%
+%% $Id: cerl_clauses.erl,v 1.2 2009/09/17 09:46:19 kostis Exp $
+
+%% @doc Utility functions for Core Erlang case/receive clauses.
+%%
+%% <p>Syntax trees are defined in the module <a
+%% href=""><code>cerl</code></a>.</p>
+%%
+%% @type cerl() = cerl:cerl()
+
+-module(cerl_clauses).
+
+-export([any_catchall/1, eval_guard/1, is_catchall/1, match/2,
+ match_list/2, reduce/1, reduce/2]).
+
+-import(cerl, [alias_pat/1, alias_var/1, data_arity/1, data_es/1,
+ data_type/1, clause_guard/1, clause_pats/1, concrete/1,
+ is_data/1, is_c_var/1, let_body/1, letrec_body/1,
+ seq_body/1, try_arg/1, type/1, values_es/1]).
+
+-import(lists, [reverse/1]).
+
+
+%% ---------------------------------------------------------------------
+
+%% @spec is_catchall(Clause::cerl()) -> boolean()
+%%
+%% @doc Returns <code>true</code> if an abstract clause is a
+%% catch-all, otherwise <code>false</code>. A clause is a catch-all if
+%% all its patterns are variables, and its guard expression always
+%% evaluates to <code>true</code>; cf. <code>eval_guard/1</code>.
+%%
+%% <p>Note: <code>Clause</code> must have type
+%% <code>clause</code>.</p>
+%%
+%% @see eval_guard/1
+%% @see any_catchall/1
+
+is_catchall(C) ->
+ case all_vars(clause_pats(C)) of
+ true ->
+ case eval_guard(clause_guard(C)) of
+ {value, true} ->
+ true;
+ _ ->
+ false
+ end;
+ false ->
+ false
+ end.
+
+all_vars([C | Cs]) ->
+ case is_c_var(C) of
+ true ->
+ all_vars(Cs);
+ false ->
+ false
+ end;
+all_vars([]) ->
+ true.
+
+
+%% @spec any_catchall(Clauses::[cerl()]) -> boolean()
+%%
+%% @doc Returns <code>true</code> if any of the abstract clauses in
+%% the list is a catch-all, otherwise <code>false</code>. See
+%% <code>is_catchall/1</code> for details.
+%%
+%% <p>Note: each node in <code>Clauses</code> must have type
+%% <code>clause</code>.</p>
+%%
+%% @see is_catchall/1
+
+any_catchall([C | Cs]) ->
+ case is_catchall(C) of
+ true ->
+ true;
+ false ->
+ any_catchall(Cs)
+ end;
+any_catchall([]) ->
+ false.
+
+
+%% @spec eval_guard(Expr::cerl()) -> none | {value, term()}
+%%
+%% @doc Tries to reduce a guard expression to a single constant value,
+%% if possible. The returned value is <code>{value, Term}</code> if the
+%% guard expression <code>Expr</code> always yields the constant value
+%% <code>Term</code>, and is otherwise <code>none</code>.
+%%
+%% <p>Note that although guard expressions should only yield boolean
+%% values, this function does not guarantee that <code>Term</code> is
+%% either <code>true</code> or <code>false</code>. Also note that only
+%% simple constructs like let-expressions are examined recursively;
+%% general constant folding is not performed.</p>
+%%
+%% @see is_catchall/1
+
+%% This function could possibly be improved further, but constant
+%% folding should in general be performed elsewhere.
+
+eval_guard(E) ->
+ case type(E) of
+ literal ->
+ {value, concrete(E)};
+ values ->
+ case values_es(E) of
+ [E1] ->
+ eval_guard(E1);
+ _ ->
+ none
+ end;
+ 'try' ->
+ eval_guard(try_arg(E));
+ seq ->
+ eval_guard(seq_body(E));
+ 'let' ->
+ eval_guard(let_body(E));
+ 'letrec' ->
+ eval_guard(letrec_body(E));
+ _ ->
+ none
+ end.
+
+
+%% ---------------------------------------------------------------------
+
+%% @spec reduce(Clauses) -> {true, {Clauses, Bindings}}
+%% | {false, Clauses}
+%%
+%% @equiv reduce(Cs, [])
+
+reduce(Cs) ->
+ reduce(Cs, []).
+
+%% @spec reduce(Clauses::[Clause], Exprs::[Expr]) ->
+%% {true, {Clause, Bindings}}
+%% | {false, [Clause]}
+%%
+%% Clause = cerl()
+%% Expr = any | cerl()
+%% Bindings = [{cerl(), cerl()}]
+%%
+%% @doc Selects a single clause, if possible, or otherwise reduces the
+%% list of selectable clauses. The input is a list <code>Clauses</code>
+%% of abstract clauses (i.e., syntax trees of type <code>clause</code>),
+%% and a list of switch expressions <code>Exprs</code>. The function
+%% tries to uniquely select a single clause or discard unselectable
+%% clauses, with respect to the switch expressions. All abstract clauses
+%% in the list must have the same number of patterns. If
+%% <code>Exprs</code> is not the empty list, it must have the same
+%% length as the number of patterns in each clause; see
+%% <code>match_list/2</code> for details.
+%%
+%% <p>A clause can only be selected if its guard expression always
+%% yields the atom <code>true</code>, and a clause whose guard
+%% expression always yields the atom <code>false</code> can never be
+%% selected. Other guard expressions are considered to have unknown
+%% value; cf. <code>eval_guard/1</code>.</p>
+%%
+%% <p>If a particular clause can be selected, the function returns
+%% <code>{true, {Clause, Bindings}}</code>, where <code>Clause</code> is
+%% the selected clause and <code>Bindings</code> is a list of pairs
+%% <code>{Var, SubExpr}</code> associating the variables occurring in
+%% the patterns of <code>Clause</code> with the corresponding
+%% subexpressions in <code>Exprs</code>. The list of bindings is given
+%% in innermost-first order; see the <code>match/2</code> function for
+%% details.</p>
+%%
+%% <p>If no clause could be definitely selected, the function returns
+%% <code>{false, NewClauses}</code>, where <code>NewClauses</code> is
+%% the list of entries in <code>Clauses</code> that remain after
+%% eliminating unselectable clauses, preserving the relative order.</p>
+%%
+%% @see eval_guard/1
+%% @see match/2
+%% @see match_list/2
+
+reduce(Cs, Es) ->
+ reduce(Cs, Es, []).
+
+reduce([C | Cs], Es, Cs1) ->
+ Ps = clause_pats(C),
+ case match_list(Ps, Es) of
+ none ->
+ %% Here, we know that the current clause cannot possibly be
+ %% selected, so we drop it and visit the rest.
+ reduce(Cs, Es, Cs1);
+ {false, _} ->
+ %% We are not sure if this clause might be selected, so we
+ %% save it and visit the rest.
+ reduce(Cs, Es, [C | Cs1]);
+ {true, Bs} ->
+ case eval_guard(clause_guard(C)) of
+ {value, true} when Cs1 == [] ->
+ %% We have a definite match - we return the residual
+ %% expression and signal that a selection has been
+ %% made. All other clauses are dropped.
+ {true, {C, Bs}};
+ {value, true} ->
+ %% Unless one of the previous clauses is selected,
+ %% this clause will definitely be, so we can drop
+ %% the rest.
+ {false, reverse([C | Cs1])};
+ {value, false} ->
+ %% This clause can never be selected, since its
+ %% guard is never 'true', so we drop it.
+ reduce(Cs, Es, Cs1);
+ _ ->
+ %% We are not sure if this clause might be selected
+ %% (or might even cause a crash), so we save it and
+ %% visit the rest.
+ reduce(Cs, Es, [C | Cs1])
+ end
+ end;
+reduce([], _, Cs) ->
+ %% All clauses visited, without a complete match. Signal "not
+ %% reduced" and return the saved clauses, in the correct order.
+ {false, reverse(Cs)}.
+
+
+%% ---------------------------------------------------------------------
+
+%% @spec match(Pattern::cerl(), Expr) ->
+%% none | {true, Bindings} | {false, Bindings}
+%%
+%% Expr = any | cerl()
+%% Bindings = [{cerl(), Expr}]
+%%
+%% @doc Matches a pattern against an expression. The returned value is
+%% <code>none</code> if a match is impossible, <code>{true,
+%% Bindings}</code> if <code>Pattern</code> definitely matches
+%% <code>Expr</code>, and <code>{false, Bindings}</code> if a match is
+%% not definite, but cannot be excluded. <code>Bindings</code> is then
+%% a list of pairs <code>{Var, SubExpr}</code>, associating each
+%% variable in the pattern with either the corresponding subexpression
+%% of <code>Expr</code>, or with the atom <code>any</code> if no
+%% matching subexpression exists. (Recall that variables may not be
+%% repeated in a Core Erlang pattern.) The list of bindings is given
+%% in innermost-first order; this should only be of interest if
+%% <code>Pattern</code> contains one or more alias patterns. If the
+%% returned value is <code>{true, []}</code>, it implies that the
+%% pattern and the expression are syntactically identical.
+%%
+%% <p>Instead of a syntax tree, the atom <code>any</code> can be
+%% passed for <code>Expr</code> (or, more generally, be used for any
+%% subtree of <code>Expr</code>, in as much the abstract syntax tree
+%% implementation allows it); this means that it cannot be decided
+%% whether the pattern will match or not, and the corresponding
+%% variable bindings will all map to <code>any</code>. The typical use
+%% is for producing bindings for <code>receive</code> clauses.</p>
+%%
+%% <p>Note: Binary-syntax patterns are never structurally matched
+%% against binary-syntax expressions by this function.</p>
+%%
+%% <p>Examples:
+%% <ul>
+%% <li>Matching a pattern "<code>{X, Y}</code>" against the
+%% expression "<code>{foo, f(Z)}</code>" yields <code>{true,
+%% Bindings}</code> where <code>Bindings</code> associates
+%% "<code>X</code>" with the subtree "<code>foo</code>" and
+%% "<code>Y</code>" with the subtree "<code>f(Z)</code>".</li>
+%%
+%% <li>Matching pattern "<code>{X, {bar, Y}}</code>" against
+%% expression "<code>{foo, f(Z)}</code>" yields <code>{false,
+%% Bindings}</code> where <code>Bindings</code> associates
+%% "<code>X</code>" with the subtree "<code>foo</code>" and
+%% "<code>Y</code>" with <code>any</code> (because it is not known
+%% if "<code>{foo, Y}</code>" might match the run-time value of
+%% "<code>f(Z)</code>" or not).</li>
+%%
+%% <li>Matching pattern "<code>{foo, bar}</code>" against expression
+%% "<code>{foo, f()}</code>" yields <code>{false, []}</code>,
+%% telling us that there might be a match, but we cannot deduce any
+%% bindings.</li>
+%%
+%% <li>Matching <code>{foo, X = {bar, Y}}</code> against expression
+%% "<code>{foo, {bar, baz}}</code>" yields <code>{true,
+%% Bindings}</code> where <code>Bindings</code> associates
+%% "<code>Y</code>" with "<code>baz</code>", and "<code>X</code>"
+%% with "<code>{bar, baz}</code>".</li>
+%%
+%% <li>Matching a pattern "<code>{X, Y}</code>" against
+%% <code>any</code> yields <code>{false, Bindings}</code> where
+%% <code>Bindings</code> associates both "<code>X</code>" and
+%% "<code>Y</code>" with <code>any</code>.</li>
+%% </ul></p>
+
+match(P, E) ->
+ match(P, E, []).
+
+match(P, E, Bs) ->
+ case type(P) of
+ var ->
+ %% Variables always match, since they cannot have repeated
+ %% occurrences in a pattern.
+ {true, [{P, E} | Bs]};
+ alias ->
+ %% All variables in P1 will be listed before the alias
+ %% variable in the result.
+ match(alias_pat(P), E, [{alias_var(P), E} | Bs]);
+ binary ->
+ %% The most we can do is to say "definitely no match" if a
+ %% binary pattern is matched against non-binary data.
+ if E == any ->
+ {false, Bs};
+ true ->
+ case is_data(E) of
+ true ->
+ none;
+ false ->
+ {false, Bs}
+ end
+ end;
+ _ ->
+ match_1(P, E, Bs)
+ end.
+
+match_1(P, E, Bs) ->
+ case is_data(P) of
+ true when E == any ->
+ %% If we don't know the structure of the value of E at this
+ %% point, we just match the subpatterns against 'any', and
+ %% make sure the result is a "maybe".
+ Ps = data_es(P),
+ Es = lists:duplicate(length(Ps), any),
+ case match_list(Ps, Es, Bs) of
+ {_, Bs1} ->
+ {false, Bs1};
+ none ->
+ none
+ end;
+ true ->
+ %% Test if the expression represents a constructor
+ case is_data(E) of
+ true ->
+ T1 = {data_type(E), data_arity(E)},
+ T2 = {data_type(P), data_arity(P)},
+ %% Note that we must test for exact equality.
+ if T1 =:= T2 ->
+ match_list(data_es(P), data_es(E), Bs);
+ true ->
+ none
+ end;
+ false ->
+ %% We don't know the run-time structure of E, and P
+ %% is not a variable or an alias pattern, so we
+ %% match against 'any' instead.
+ match_1(P, any, Bs)
+ end;
+ false ->
+ %% Strange pattern - give up, but don't say "no match".
+ {false, Bs}
+ end.
+
+
+%% @spec match_list(Patterns::[cerl()], Exprs::[Expr]) ->
+%% none | {true, Bindings} | {false, Bindings}
+%%
+%% Expr = any | cerl()
+%% Bindings = [{cerl(), cerl()}]
+%%
+%% @doc Like <code>match/2</code>, but matching a sequence of patterns
+%% against a sequence of expressions. Passing an empty list for
+%% <code>Exprs</code> is equivalent to passing a list of
+%% <code>any</code> atoms of the same length as <code>Patterns</code>.
+%%
+%% @see match/2
+
+match_list([], []) ->
+ {true, []}; % no patterns always match
+match_list(Ps, []) ->
+ match_list(Ps, lists:duplicate(length(Ps), any), []);
+match_list(Ps, Es) ->
+ match_list(Ps, Es, []).
+
+match_list([P | Ps], [E | Es], Bs) ->
+ case match(P, E, Bs) of
+ {true, Bs1} ->
+ match_list(Ps, Es, Bs1);
+ {false, Bs1} ->
+ %% Make sure "maybe" is preserved
+ case match_list(Ps, Es, Bs1) of
+ {_, Bs2} ->
+ {false, Bs2};
+ none ->
+ none
+ end;
+ none ->
+ none
+ end;
+match_list([], [], Bs) ->
+ {true, Bs}.
diff --git a/lib/dialyzer/test/options1_tests_SUITE_data/src/compiler/cerl_inline.erl b/lib/dialyzer/test/options1_tests_SUITE_data/src/compiler/cerl_inline.erl
new file mode 100644
index 0000000000..e040904a19
--- /dev/null
+++ b/lib/dialyzer/test/options1_tests_SUITE_data/src/compiler/cerl_inline.erl
@@ -0,0 +1,2762 @@
+%% ``The contents of this file are subject to the Erlang Public License,
+%% Version 1.1, (the "License"); you may not use this file except in
+%% compliance with the License. You should have received a copy of the
+%% Erlang Public License along with this software. If not, it can be
+%% retrieved via the world wide web at http://www.erlang.org/.
+%%
+%% Software distributed under the License is distributed on an "AS IS"
+%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
+%% the License for the specific language governing rights and limitations
+%% under the License.
+%%
+%% The Initial Developer of the Original Code is Richard Carlsson.
+%% Copyright (C) 1999-2002 Richard Carlsson.
+%% Portions created by Ericsson are Copyright 2001, Ericsson Utvecklings
+%% AB. All Rights Reserved.''
+%%
+%% $Id: cerl_inline.erl,v 1.1 2008/12/17 09:53:41 mikpe Exp $
+%%
+%% Core Erlang inliner.
+
+%% =====================================================================
+%%
+%% This is an implementation of the algorithm by Waddell and Dybvig
+%% ("Fast and Effective Procedure Inlining", International Static
+%% Analysis Symposium 1997), adapted to the Core Erlang language.
+%%
+%% Instead of always renaming variables and function variables, this
+%% implementation uses the "no-shadowing strategy" of Peyton Jones and
+%% Marlow ("Secrets of the Glasgow Haskell Compiler Inliner", 1999).
+%%
+%% =====================================================================
+
+%% TODO: inline single-source-reference operands without size limit.
+
+-module(cerl_inline).
+
+-export([core_transform/2, transform/1, transform/2]).
+
+-import(cerl, [abstract/1, alias_pat/1, alias_var/1, apply_args/1,
+ apply_op/1, atom_name/1, atom_val/1, bitstr_val/1,
+ bitstr_size/1, bitstr_unit/1, bitstr_type/1,
+ bitstr_flags/1, binary_segments/1, update_c_alias/3,
+ update_c_apply/3, update_c_binary/2, update_c_bitstr/6,
+ update_c_call/4, update_c_case/3, update_c_catch/2,
+ update_c_clause/4, c_fun/2, c_int/1, c_let/3,
+ update_c_let/4, update_c_letrec/3, update_c_module/5,
+ update_c_primop/3, update_c_receive/4, update_c_seq/3,
+ c_seq/2, update_c_try/6, c_tuple/1, update_c_values/2,
+ c_values/1, c_var/1, call_args/1, call_module/1,
+ call_name/1, case_arity/1, case_arg/1, case_clauses/1,
+ catch_body/1, clause_body/1, clause_guard/1,
+ clause_pats/1, clause_vars/1, concrete/1, cons_hd/1,
+ cons_tl/1, data_arity/1, data_es/1, data_type/1,
+ fun_body/1, fun_vars/1, get_ann/1, int_val/1,
+ is_c_atom/1, is_c_cons/1, is_c_fun/1, is_c_int/1,
+ is_c_list/1, is_c_seq/1, is_c_tuple/1, is_c_var/1,
+ is_data/1, is_literal/1, is_literal_term/1, let_arg/1,
+ let_body/1, let_vars/1, letrec_body/1, letrec_defs/1,
+ list_length/1, list_elements/1, update_data/3,
+ make_list/1, make_data_skel/2, module_attrs/1,
+ module_defs/1, module_exports/1, module_name/1,
+ primop_args/1, primop_name/1, receive_action/1,
+ receive_clauses/1, receive_timeout/1, seq_arg/1,
+ seq_body/1, set_ann/2, try_arg/1, try_body/1, try_vars/1,
+ try_evars/1, try_handler/1, tuple_es/1, tuple_arity/1,
+ type/1, values_es/1, var_name/1]).
+
+-import(lists, [foldl/3, foldr/3, mapfoldl/3, reverse/1]).
+
+%%
+%% Constants
+%%
+
+debug_runtime() -> false.
+debug_counters() -> false.
+
+%% Normal execution times for inlining are between 0.1 and 0.3 seconds
+%% (on the author's current equipment). The default effort limit of 150
+%% is high enough that most normal programs never hit the limit even
+%% once, and for difficult programs, it generally keeps the execution
+%% times below 2-5 seconds. Using an effort counter of 1000 will thus
+%% have no further effect on most programs, but some programs may take
+%% as much as 10 seconds or more. Effort counts larger than 2500 have
+%% never been observed even on very ill-conditioned programs.
+%%
+%% Size limits between 6 and 18 tend to actually shrink the code,
+%% because of the simplifications made possible by inlining. A limit of
+%% 16 seems to be optimal for this purpose, often shrinking the
+%% executable code by up to 10%. Size limits between 18 and 30 generally
+%% give the same code size as if no inlining was done (i.e., code
+%% duplication balances out the simplifications at these levels). A size
+%% limit between 1 and 5 tends to inline small functions and propagate
+%% constants, but does not cause much simplifications do be done, so the
+%% net effect will be a slight increase in code size. For size limits
+%% above 30, the executable code size tends to increase with about 10%
+%% per 100 units, with some variations depending on the sizes of
+%% functions in the source code.
+%%
+%% Typically, about 90% of the maximum speedup achievable is already
+%% reached using a size limit of 30, and 98% is reached at limits around
+%% 100-150; there is rarely any point in letting the code size increase
+%% by more than 10-15%. If too large functions are inlined, cache
+%% effects will slow the program down.
+
+default_effort() -> 150.
+default_size() -> 24.
+
+%% Base costs/weights for different kinds of expressions. If these are
+%% modified, the size limits above may have to be adjusted.
+
+weight(var) -> 0; % We count no cost for variable accesses.
+weight(values) -> 0; % Value aggregates have no cost in themselves.
+weight(literal) -> 1; % We assume efficient handling of constants.
+weight(data) -> 1; % Base cost; add 1 per element.
+weight(element) -> 1; % Cost of storing/fetching an element.
+weight(argument) -> 1; % Cost of passing a function argument.
+weight('fun') -> 6; % Base cost + average number of free vars.
+weight('let') -> 0; % Count no cost for let-bindings.
+weight(letrec) -> 0; % Like a let-binding.
+weight('case') -> 0; % Case switches have no base cost.
+weight(clause) -> 1; % Count one jump at the end of each clause body.
+weight('receive') -> 9; % Initialization/cleanup cost.
+weight('try') -> 1; % Assume efficient implementation.
+weight('catch') -> 1; % See `try'.
+weight(apply) -> 3; % Average base cost: call/return.
+weight(call) -> 3; % Assume remote-calls as efficient as `apply'.
+weight(primop) -> 2; % Assume more efficient than `apply'.
+weight(binary) -> 4; % Initialisation base cost.
+weight(bitstr) -> 3; % Coding/decoding a value; like a primop.
+weight(module) -> 1. % Like a letrec with a constant body
+
+%% These "reference" structures are used for variables and function
+%% variables. They keep track of the variable name, any bound operand,
+%% and the associated store location.
+
+-record(ref, {name, opnd, loc}).
+
+%% Operand structures contain the operand expression, the renaming and
+%% environment, the state location, and the effort counter at the call
+%% site (cf. `visit').
+
+-record(opnd, {expr, ren, env, loc, effort}).
+
+%% Since expressions are only visited in `effect' context when they are
+%% not bound to a referenced variable, only expressions visited in
+%% 'value' context are cached.
+
+-record(cache, {expr, size}).
+
+%% The context flags for an application structure are kept separate from
+%% the structure itself. Note that the original algorithm had exactly
+%% one operand in each application context structure, while we can have
+%% several, or none.
+
+-record(app, {opnds, ctxt, loc}).
+
+
+%%
+%% Interface functions
+%%
+
+%% Use compile option `{core_transform, inline}' to insert this as a
+%% compilation pass.
+
+core_transform(Code, Opts) ->
+ cerl:to_records(transform(cerl:from_records(Code), Opts)).
+
+transform(Tree) ->
+ transform(Tree, []).
+
+transform(Tree, Opts) ->
+ main(Tree, value, Opts).
+
+main(Tree, Ctxt, Opts) ->
+ %% We spawn a new process to do the work, so we don't have to worry
+ %% about cluttering the process dictionary with debugging info, or
+ %% proper deallocation of ets-tables.
+ Opts1 = Opts ++ [{inline_size, default_size()},
+ {inline_effort, default_effort()}],
+ Reply = self(),
+ Pid = spawn_link(fun () -> start(Reply, Tree, Ctxt, Opts1) end),
+ receive
+ {Pid1, Tree1} when Pid1 == Pid ->
+ Tree1
+ end.
+
+start(Reply, Tree, Ctxt, Opts) ->
+ init_debug(),
+ case debug_runtime() of
+ true ->
+ put(inline_start_time,
+ element(1, erlang:statistics(runtime)));
+ _ ->
+ ok
+ end,
+ Size = max(1, proplists:get_value(inline_size, Opts)),
+ Effort = max(1, proplists:get_value(inline_effort, Opts)),
+ case proplists:get_bool(verbose, Opts) of
+ true ->
+ io:fwrite("Inlining: inline_size=~w inline_effort=~w\n",
+ [Size, Effort]);
+ false ->
+ ok
+ end,
+
+ %% Note that the counters of the new state are passive.
+ S = st__new(Effort, Size),
+
+%%% Initialization is not needed at present. Note that the code in
+%%% `inline_init' is not up-to-date with this module.
+%%% {Tree1, S1} = inline_init:init(Tree, S),
+%%% {Tree2, _S2} = i(Tree1, Ctxt, S1),
+ {Tree2, _S2} = i(Tree, Ctxt, S),
+ report_debug(),
+ Reply ! {self(), Tree2}.
+
+init_debug() ->
+ case debug_counters() of
+ true ->
+ put(counter_effort_triggers, 0),
+ put(counter_effort_max, 0),
+ put(counter_size_triggers, 0),
+ put(counter_size_max, 0);
+ _ ->
+ ok
+ end.
+
+report_debug() ->
+ case debug_runtime() of
+ true ->
+ {Time, _} = erlang:statistics(runtime),
+ report("Total run time for inlining: ~.2.0f s.\n",
+ [(Time - get(inline_start_time))/1000]);
+ _ ->
+ ok
+ end,
+ case debug_counters() of
+ true ->
+ counter_stats();
+ _ ->
+ ok
+ end.
+
+counter_stats() ->
+ T1 = get(counter_effort_triggers),
+ T2 = get(counter_size_triggers),
+ E = get(counter_effort_max),
+ S = get(counter_size_max),
+ M1 = io_lib:fwrite("\tNumber of triggered "
+ "effort counters: ~p.\n", [T1]),
+ M2 = io_lib:fwrite("\tNumber of triggered "
+ "size counters: ~p.\n", [T2]),
+ M3 = io_lib:fwrite("\tLargest active effort counter: ~p.\n",
+ [E]),
+ M4 = io_lib:fwrite("\tLargest active size counter: ~p.\n",
+ [S]),
+ report("Counter statistics:\n~s", [[M1, M2, M3, M4]]).
+
+
+%% =====================================================================
+%% The main inlining function
+%%
+%% i(E :: coreErlang(),
+%% Ctxt :: value | effect | #app{}
+%% Ren :: renaming(),
+%% Env :: environment(),
+%% S :: state())
+%% -> {E', S'}
+%%
+%% Note: It is expected that the input source code ('E') does not
+%% contain free variables. If it does, there is a risk of accidental
+%% name capture, in case a generated "new" variable name happens to be
+%% the same as the name of a variable that is free further below in the
+%% tree; the algorithm only consults the current environment to check if
+%% a name already exists.
+%%
+%% The renaming maps names of source-code variable and function
+%% variables to new names as necessary to avoid clashes, according to
+%% the "no-shadowing" strategy. The environment maps *residual-code*
+%% variables and function variables to operands and global information.
+%% Separating the renaming from the environment, and using the
+%% residual-code variables instead of the source-code variables as its
+%% domain, improves the behaviour of the algorithm when code needs to be
+%% traversed more than once.
+%%
+%% Note that there is no such thing as a `test' context for expressions
+%% in (Core) Erlang (see `i_case' below for details).
+
+i(E, Ctxt, S) ->
+ i(E, Ctxt, ren__identity(), env__empty(), S).
+
+i(E, Ctxt, Ren, Env, S0) ->
+ %% Count one unit of effort on each pass.
+ S = count_effort(1, S0),
+ case is_data(E) of
+ true ->
+ i_data(E, Ctxt, Ren, Env, S);
+ false ->
+ case type(E) of
+ var ->
+ i_var(E, Ctxt, Ren, Env, S);
+ values ->
+ i_values(E, Ctxt, Ren, Env, S);
+ 'fun' ->
+ i_fun(E, Ctxt, Ren, Env, S);
+ seq ->
+ i_seq(E, Ctxt, Ren, Env, S);
+ 'let' ->
+ i_let(E, Ctxt, Ren, Env, S);
+ letrec ->
+ i_letrec(E, Ctxt, Ren, Env, S);
+ 'case' ->
+ i_case(E, Ctxt, Ren, Env, S);
+ 'receive' ->
+ i_receive(E, Ctxt, Ren, Env, S);
+ apply ->
+ i_apply(E, Ctxt, Ren, Env, S);
+ call ->
+ i_call(E, Ctxt, Ren, Env, S);
+ primop ->
+ i_primop(E, Ren, Env, S);
+ 'try' ->
+ i_try(E, Ctxt, Ren, Env, S);
+ 'catch' ->
+ i_catch(E, Ctxt, Ren, Env, S);
+ binary ->
+ i_binary(E, Ren, Env, S);
+ module ->
+ i_module(E, Ctxt, Ren, Env, S)
+ end
+ end.
+
+i_data(E, Ctxt, Ren, Env, S) ->
+ case is_literal(E) of
+ true ->
+ %% This is the `(const c)' case of the original algorithm:
+ %% literal terms which (regardless of size) do not need to
+ %% be constructed dynamically at runtime - boldly assuming
+ %% that the compiler/runtime system can handle this.
+ case Ctxt of
+ effect ->
+ %% Reduce useless constants to a simple value.
+ {void(), count_size(weight(literal), S)};
+ _ ->
+ %% (In Erlang, we cannot set all non-`false'
+ %% constants to `true' in a `test' context, like we
+ %% could do in Lisp or C, so the above is the only
+ %% special case to be handled here.)
+ {E, count_size(weight(literal), S)}
+ end;
+ false ->
+ %% Data constructors are like to calls to safe built-in
+ %% functions, for which we can "decide to inline"
+ %% immediately; there is no need to create operand
+ %% structures. In `effect' context, we can simply make a
+ %% sequence of the argument expressions, also visited in
+ %% `effect' context. In all other cases, the arguments are
+ %% visited for value.
+ case Ctxt of
+ effect ->
+ %% Note that this will count the sizes of the
+ %% subexpressions, even though some or all of them
+ %% might be discarded by the sequencing afterwards.
+ {Es1, S1} = mapfoldl(fun (E, S) ->
+ i(E, effect, Ren, Env,
+ S)
+ end,
+ S, data_es(E)),
+ E1 = foldl(fun (E1, E2) -> make_seq(E1, E2) end,
+ void(), Es1),
+ {E1, S1};
+ _ ->
+ {Es1, S1} = mapfoldl(fun (E, S) ->
+ i(E, value, Ren, Env,
+ S)
+ end,
+ S, data_es(E)),
+ %% The total size/cost is the base cost for a data
+ %% constructor plus the cost for storing each
+ %% element.
+ N = weight(data) + length(Es1) * weight(element),
+ S2 = count_size(N, S1),
+ {update_data(E, data_type(E), Es1), S2}
+ end
+ end.
+
+%% This is the `(ref x)' (variable use) case of the original algorithm.
+%% Note that binding occurrences are always handled in the respective
+%% cases of the binding constructs.
+
+i_var(E, Ctxt, Ren, Env, S) ->
+ case Ctxt of
+ effect ->
+ %% Reduce useless variable references to a simple constant.
+ %% This also avoids useless visiting of bound operands.
+ {void(), count_size(weight(literal), S)};
+ _ ->
+ Name = var_name(E),
+ case env__lookup(ren__map(Name, Ren), Env) of
+ {ok, R} ->
+ case R#ref.opnd of
+ undefined ->
+ %% The variable is not associated with an
+ %% argument expression; just residualize it.
+ residualize_var(R, S);
+ Opnd ->
+ i_var_1(R, Opnd, Ctxt, Env, S)
+ end;
+ error ->
+ %% The variable is unbound. (It has not been
+ %% accidentally captured, however, or it would have
+ %% been in the environment.) We leave it as it is,
+ %% without any warning.
+ {E, count_size(weight(var), S)}
+ end
+ end.
+
+%% This first visits the bound operand and then does copy propagation.
+%% Note that we must first set the "inner-pending" flag, and clear the
+%% flag afterwards.
+
+i_var_1(R, Opnd, Ctxt, Env, S) ->
+ %% If the operand is already "inner-pending", it is residualised.
+ %% (In Lisp/C, if the variable might be assigned to, it should also
+ %% be residualised.)
+ L = Opnd#opnd.loc,
+ case st__test_inner_pending(L, S) of
+ true ->
+ residualize_var(R, S);
+ false ->
+ S1 = st__mark_inner_pending(L, S),
+ case catch {ok, visit(Opnd, S1)} of
+ {ok, {E, S2}} ->
+ %% Note that we pass the current environment and
+ %% context to `copy', but not the current renaming.
+ S3 = st__clear_inner_pending(L, S2),
+ copy(R, Opnd, E, Ctxt, Env, S3);
+ {'EXIT', X} ->
+ exit(X);
+ X ->
+ %% If we use destructive update for the
+ %% `inner-pending' flag, we must make sure to clear
+ %% it also if we make a nonlocal return.
+ st__clear_inner_pending(Opnd#opnd.loc, S1),
+ throw(X)
+ end
+ end.
+
+%% A multiple-value aggregate `<e1, ..., en>'. This is very much like a
+%% tuple data constructor `{e1, ..., en}'; cf. `i_data' for details.
+
+i_values(E, Ctxt, Ren, Env, S) ->
+ case values_es(E) of
+ [E1] ->
+ %% Single-value aggregates can be dropped; they are simply
+ %% notation.
+ i(E1, Ctxt, Ren, Env, S);
+ Es ->
+ %% In `effect' context, we can simply make a sequence of the
+ %% argument expressions, also visited in `effect' context.
+ %% In all other cases, the arguments are visited for value.
+ case Ctxt of
+ effect ->
+ {Es1, S1} =
+ mapfoldl(fun (E, S) ->
+ i(E, effect, Ren, Env, S)
+ end,
+ S, Es),
+ E1 = foldl(fun (E1, E2) ->
+ make_seq(E1, E2)
+ end,
+ void(), Es1),
+ {E1, S1}; % drop annotations on E
+ _ ->
+ {Es1, S1} = mapfoldl(fun (E, S) ->
+ i(E, value, Ren, Env,
+ S)
+ end,
+ S, Es),
+ %% Aggregating values does not write them to memory,
+ %% so we count no extra cost per element.
+ S2 = count_size(weight(values), S1),
+ {update_c_values(E, Es1), S2}
+ end
+ end.
+
+%% A let-expression `let <v1,...,vn> = e0 in e1' is semantically
+%% equivalent to a case-expression `case e0 of <v1,...,vn> when 'true'
+%% -> e1 end'. As a special case, `let <v> = e0 in e1' is also
+%% equivalent to `apply fun (v) -> e0 (e1)'. However, for efficiency,
+%% and in order to allow the handling of `case' clauses to introduce new
+%% let-expressions without entering an infinite rewrite loop, we handle
+%% these directly.
+
+%%% %% Rewriting a `let' to an equivalent expression.
+%%% i_let(E, Ctxt, Ren, Env, S) ->
+%%% case let_vars(E) of
+%%% [V] ->
+%%% E1 = update_c_apply(E, c_fun([V], let_body(E)), [let_arg(E)]),
+%%% i(E1, Ctxt, Ren, Env, S);
+%%% Vs ->
+%%% C = c_clause(Vs, abstract(true), let_body(E)),
+%%% E1 = update_c_case(E, let_arg(E), [C]),
+%%% i(E1, Ctxt, Ren, Env, S)
+%%% end.
+
+i_let(E, Ctxt, Ren, Env, S) ->
+ case let_vars(E) of
+ [V] ->
+ i_let_1(V, E, Ctxt, Ren, Env, S);
+ Vs ->
+ %% Visit the argument expression in `value' context, to
+ %% simplify it as far as possible.
+ {A, S1} = i(let_arg(E), value, Ren, Env, S),
+ case get_components(length(Vs), result(A)) of
+ {true, As} ->
+ %% Note that only the components of the result of
+ %% `A' are passed on; any effects are hoisted.
+ {E1, S2} = i_let_2(Vs, As, E, Ctxt, Ren, Env, S1),
+ {hoist_effects(A, E1), S2};
+ false ->
+ %% We cannot do anything with this `let', since the
+ %% variables cannot be matched against the argument
+ %% components. Just visit the variables for renaming
+ %% and visit the body for value (cf. `i_fun').
+ {_, Ren1, Env1, S2} = bind_locals(Vs, Ren, Env, S1),
+ Vs1 = i_params(Vs, Ren1, Env1),
+ %% The body is always visited for value here.
+ {B, S3} = i(let_body(E), value, Ren1, Env1, S2),
+ S4 = count_size(weight('let'), S3),
+ {update_c_let(E, Vs1, A, B), S4}
+ end
+ end.
+
+%% Single-variable `let' binding.
+
+i_let_1(V, E, Ctxt, Ren, Env, S) ->
+ %% Make an operand structure for the argument expression, create a
+ %% local binding from the parameter to the operand structure, and
+ %% visit the body. Finally create necessary bindings and/or set
+ %% flags.
+ {Opnd, S1} = make_opnd(let_arg(E), Ren, Env, S),
+ {[R], Ren1, Env1, S2} = bind_locals([V], [Opnd], Ren, Env, S1),
+ {E1, S3} = i(let_body(E), Ctxt, Ren1, Env1, S2),
+ i_let_3([R], [Opnd], E1, S3).
+
+%% Multi-variable `let' binding.
+
+i_let_2(Vs, As, E, Ctxt, Ren, Env, S) ->
+ %% Make operand structures for the argument components. Note that
+ %% since the argument has already been visited at this point, we use
+ %% the identity renaming for the operands.
+ {Opnds, S1} = mapfoldl(fun (E, S) ->
+ make_opnd(E, ren__identity(), Env, S)
+ end,
+ S, As),
+ %% Create local bindings from the parameters to their respective
+ %% operand structures, and visit the body.
+ {Rs, Ren1, Env1, S2} = bind_locals(Vs, Opnds, Ren, Env, S1),
+ {E1, S3} = i(let_body(E), Ctxt, Ren1, Env1, S2),
+ i_let_3(Rs, Opnds, E1, S3).
+
+i_let_3(Rs, Opnds, E, S) ->
+ %% Create necessary bindings and/or set flags.
+ {E1, S1} = make_let_bindings(Rs, E, S),
+
+ %% We must also create evaluation for effect, for any unused
+ %% operands, as after an application expression.
+ residualize_operands(Opnds, E1, S1).
+
+%% A sequence `do e1 e2', written `(seq e1 e2)' in the original
+%% algorithm, where `e1' is evaluated for effect only (since its value
+%% is not used), and `e2' yields the final value. Note that we use
+%% `make_seq' to recompose the sequence after visiting the parts.
+
+i_seq(E, Ctxt, Ren, Env, S) ->
+ {E1, S1} = i(seq_arg(E), effect, Ren, Env, S),
+ {E2, S2} = i(seq_body(E), Ctxt, Ren, Env, S1),
+ %% A sequence has no cost in itself.
+ {make_seq(E1, E2), S2}.
+
+
+%% The `case' switch of Core Erlang is rather different from the boolean
+%% `(if e1 e2 e3)' case of the original algorithm, but the central idea
+%% is the same: if, given the simplified switch expression (which is
+%% visited in `value' context - a boolean `test' context would not be
+%% generally useful), there is a clause which could definitely be
+%% selected, such that no clause before it can possibly be selected,
+%% then we can eliminate all other clauses. (And even if this is not the
+%% case, some clauses can often be eliminated.) Furthermore, if a clause
+%% can be selected, we can replace the case-expression (including the
+%% switch expression) with the body of the clause and a set of zero or
+%% more let-bindings of subexpressions of the switch expression. (In the
+%% simplest case, the switch expression is evaluated only for effect.)
+
+i_case(E, Ctxt, Ren, Env, S) ->
+ %% First visit the switch expression in `value' context, to simplify
+ %% it as far as possible. Note that only the result part is passed
+ %% on to the clause matching below; any effects are hoisted.
+ {A, S1} = i(case_arg(E), value, Ren, Env, S),
+ A1 = result(A),
+
+ %% Propagating an application context into the branches could cause
+ %% the arguments of the application to be evaluated *after* the
+ %% switch expression, but *before* the body of the selected clause.
+ %% Such interleaving is not allowed in general, and it does not seem
+ %% worthwile to make a more powerful transformation here. Therefore,
+ %% the clause bodies are conservatively visited for value if the
+ %% context is `application'.
+ Ctxt1 = safe_context(Ctxt),
+ {E1, S2} = case get_components(case_arity(E), A1) of
+ {true, As} ->
+ i_case_1(As, E, Ctxt1, Ren, Env, S1);
+ false ->
+ i_case_1([], E, Ctxt1, Ren, Env, S1)
+ end,
+ {hoist_effects(A, E1), S2}.
+
+i_case_1(As, E, Ctxt, Ren, Env, S) ->
+ case i_clauses(As, case_clauses(E), Ctxt, Ren, Env, S) of
+ {false, {As1, Vs, Env1, Cs}, S1} ->
+ %% We still have a list of clauses. Sanity check:
+ if Cs == [] ->
+ report_warning("empty list of clauses "
+ "in residual program!.\n");
+ true ->
+ ok
+ end,
+ {A, S2} = i(c_values(As1), value, ren__identity(), Env1,
+ S1),
+ {E1, S3} = i_case_2(Cs, A, E, S2),
+ i_case_3(Vs, Env1, E1, S3);
+ {true, {_, Vs, Env1, [C]}, S1} ->
+ %% A single clause was selected; we just take the body.
+ i_case_3(Vs, Env1, clause_body(C), S1)
+ end.
+
+%% Check if all clause bodies are actually equivalent expressions that
+%% do not depent on pattern variables (this sometimes occurs as a
+%% consequence of inlining, e.g., all branches might yield 'true'), and
+%% if so, replace the `case' with a sequence, first evaluating the
+%% clause selection for effect, then evaluating one of the clause bodies
+%% for its value. (Unless the switch contains a catch-all clause, the
+%% clause selection must be evaluated for effect, since there is no
+%% guarantee that any of the clauses will actually match. Assuming that
+%% some clause always matches could make an undefined program produce a
+%% value.) This makes the final size less than what was accounted for
+%% when visiting the clauses, but currently we don't try to adjust for
+%% this.
+
+i_case_2(Cs, A, E, S) ->
+ case equivalent_clauses(Cs) of
+ false ->
+ %% Count the base sizes for the remaining clauses; pattern
+ %% and guard sizes are already counted.
+ N = weight('case') + weight(clause) * length(Cs),
+ S1 = count_size(N, S),
+ {update_c_case(E, A, Cs), S1};
+ true ->
+ case cerl_clauses:any_catchall(Cs) of
+ true ->
+ %% We know that some clause must be selected, so we
+ %% can drop all the testing as well.
+ E1 = make_seq(A, clause_body(hd(Cs))),
+ {E1, S};
+ false ->
+ %% The clause selection must be performed for
+ %% effect.
+ E1 = update_c_case(E, A,
+ set_clause_bodies(Cs, void())),
+ {make_seq(E1, clause_body(hd(Cs))), S}
+ end
+ end.
+
+i_case_3(Vs, Env, E, S) ->
+ %% For the variables bound to the switch expression subexpressions,
+ %% make let bindings or create evaluation for effect.
+ Rs = [env__get(var_name(V), Env) || V <- Vs],
+ {E1, S1} = make_let_bindings(Rs, E, S),
+ Opnds = [R#ref.opnd || R <- Rs],
+ residualize_operands(Opnds, E1, S1).
+
+%% This function takes a sequence of switch expressions `Es' (which can
+%% be the empty list if these are unknown) and a list `Cs' of clauses,
+%% and returns `{Match, {As, Vs, Env1, Cs1}, S1}' where `As' is a list
+%% of residual switch expressions, `Vs' the list of variables used in
+%% the templates, `Env1' the environment for the templates, and `Cs1'
+%% the list of residual clauses. `Match' is `true' if some clause could
+%% be shown to definitely match (in this case, `Cs1' contains exactly
+%% one element), and `false' otherwise. `S1' is the new state. The given
+%% `Ctxt' is the context to be used for visiting the body of clauses.
+%%
+%% Visiting a clause basically amounts to extending the environment for
+%% all variables in the pattern, as for a `fun' (cf. `i_fun'),
+%% propagating match information if possible, and visiting the guard and
+%% body in the new environment.
+%%
+%% To make it cheaper to do handle a set of clauses, and to avoid
+%% unnecessarily exceeding the size limit, we avoid visiting the bodies
+%% of clauses which are subsequently removed, by dividing the visiting
+%% of a clause into two stages: first construct the environment(s) and
+%% visit the pattern (for renaming) and the guard (for value), then
+%% reduce the switch as much as possible, and lastly visit the body.
+
+i_clauses(Cs, Ctxt, Ren, Env, S) ->
+ i_clauses([], Cs, Ctxt, Ren, Env, S).
+
+i_clauses(Es, Cs, Ctxt, Ren, Env, S) ->
+ %% Create templates for the switch expressions.
+ {Ts, {Vs, Env0}} = mapfoldl(fun (E, {Vs, Env}) ->
+ {T, Vs1, Env1} =
+ make_template(E, Env),
+ {T, {Vs1 ++ Vs, Env1}}
+ end,
+ {[], Env}, Es),
+
+ %% Make operand structures for the switch subexpression templates
+ %% (found in `Env0') and add proper ref-structure bindings to the
+ %% environment. Since the subexpressions in general can be
+ %% interdependent (Vs is in reverse-dependency order), the
+ %% environment (and renaming) must be created incrementally. Note
+ %% that since the switch expressions have been visited already, the
+ %% identity renaming is used for the operands.
+ Vs1 = lists:reverse(Vs),
+ {Ren1, Env1, S1} =
+ foldl(fun (V, {Ren, Env, S}) ->
+ E = env__get(var_name(V), Env0),
+ {Opnd, S_1} = make_opnd(E, ren__identity(), Env,
+ S),
+ {_, Ren1, Env1, S_2} = bind_locals([V], [Opnd],
+ Ren, Env, S_1),
+ {Ren1, Env1, S_2}
+ end,
+ {Ren, Env, S}, Vs1),
+
+ %% First we visit the head of each individual clause, renaming
+ %% pattern variables, inserting let-bindings in the guard and body,
+ %% and visiting the guard. The information used for visiting the
+ %% clause body will be prefixed to the clause annotations.
+ {Cs1, S2} = mapfoldl(fun (C, S) ->
+ i_clause_head(C, Ts, Ren1, Env1, S)
+ end,
+ S1, Cs),
+
+ %% Now that the clause guards have been reduced as far as possible,
+ %% we can attempt to reduce the clauses.
+ As = [hd(get_ann(T)) || T <- Ts],
+ case cerl_clauses:reduce(Cs1, Ts) of
+ {false, Cs2} ->
+ %% We still have one or more clauses (with associated
+ %% extended environments). Their bodies have not yet been
+ %% visited, so we do that (in the respective safe
+ %% environments, adding the sizes of the visited heads to
+ %% the current size counter) and return the final list of
+ %% clauses.
+ {Cs3, S3} = mapfoldl(
+ fun (C, S) ->
+ i_clause_body(C, Ctxt, S)
+ end,
+ S2, Cs2),
+ {false, {As, Vs1, Env1, Cs3}, S3};
+ {true, {C, _}} ->
+ %% A clause C could be selected (the bindings have already
+ %% been added to the guard/body). Note that since the clause
+ %% head will probably be discarded, its size is not counted.
+ {C1, Ren2, Env2, _} = get_clause_extras(C),
+ {B, S3} = i(clause_body(C), Ctxt, Ren2, Env2, S2),
+ C2 = update_c_clause(C1, clause_pats(C1), clause_guard(C1), B),
+ {true, {As, Vs1, Env1, [C2]}, S3}
+ end.
+
+%% This visits the head of a clause, renames pattern variables, inserts
+%% let-bindings in the guard and body, and does inlining on the guard
+%% expression. Returns a list of pairs `{NewClause, Data}', where `Data'
+%% is `{Renaming, Environment, Size}' used for visiting the body of the
+%% new clause.
+
+i_clause_head(C, Ts, Ren, Env, S) ->
+ %% Match the templates against the (non-renamed) patterns to get the
+ %% available information about matching subexpressions. We don't
+ %% care at this point whether an exact match/nomatch is detected.
+ Ps = clause_pats(C),
+ Bs = case cerl_clauses:match_list(Ps, Ts) of
+ {_, Bs1} -> Bs1;
+ none -> []
+ end,
+
+ %% The patterns must be visited for renaming; cf. `i_pattern'. We
+ %% use a passive size counter for visiting the patterns and the
+ %% guard (cf. `visit'), because we do not know at this stage whether
+ %% the clause will be kept or not; the final value of the counter is
+ %% included in the returned value below.
+ {_, Ren1, Env1, S1} = bind_locals(clause_vars(C), Ren, Env, S),
+ S2 = new_passive_size(get_size_limit(S1), S1),
+ {Ps1, S3} = mapfoldl(fun (P, S) ->
+ i_pattern(P, Ren1, Env1, Ren, Env, S)
+ end,
+ S2, Ps),
+
+ %% Rewrite guard and body and visit the guard for value. Discard the
+ %% latter size count if the guard turns out to be a constant.
+ G = add_match_bindings(Bs, clause_guard(C)),
+ B = add_match_bindings(Bs, clause_body(C)),
+ {G1, S4} = i(G, value, Ren1, Env1, S3),
+ S5 = case is_literal(G1) of
+ true ->
+ revert_size(S3, S4);
+ false ->
+ S4
+ end,
+
+ %% Revert to the size counter we had on entry to this function. The
+ %% environment and renaming, together with the size of the clause
+ %% head, are prefixed to the annotations for later use.
+ Size = get_size_value(S5),
+ C1 = update_c_clause(C, Ps1, G1, B),
+ {set_clause_extras(C1, Ren1, Env1, Size), revert_size(S, S5)}.
+
+add_match_bindings(Bs, E) ->
+ %% Don't waste time if the variables definitely cannot be used.
+ %% (Most guards are simply `true'.)
+ case is_literal(E) of
+ true ->
+ E;
+ false ->
+ Vs = [V || {V, E} <- Bs, E /= any],
+ Es = [hd(get_ann(E)) || {_V, E} <- Bs, E /= any],
+ c_let(Vs, c_values(Es), E)
+ end.
+
+i_clause_body(C0, Ctxt, S) ->
+ {C, Ren, Env, Size} = get_clause_extras(C0),
+ S1 = count_size(Size, S),
+ {B, S2} = i(clause_body(C), Ctxt, Ren, Env, S1),
+ C1 = update_c_clause(C, clause_pats(C), clause_guard(C), B),
+ {C1, S2}.
+
+get_clause_extras(C) ->
+ [{Ren, Env, Size} | As] = get_ann(C),
+ {set_ann(C, As), Ren, Env, Size}.
+
+set_clause_extras(C, Ren, Env, Size) ->
+ As = [{Ren, Env, Size} | get_ann(C)],
+ set_ann(C, As).
+
+%% This is the `(lambda x e)' case of the original algorithm. A
+%% `fun' is like a lambda expression, but with a varying number of
+%% parameters; possibly zero.
+
+i_fun(E, Ctxt, Ren, Env, S) ->
+ case Ctxt of
+ effect ->
+ %% Reduce useless `fun' expressions to a simple constant;
+ %% visiting the body would be a waste of time, and could
+ %% needlessly mark variables as referenced.
+ {void(), count_size(weight(literal), S)};
+ value ->
+ %% Note that the variables are visited as patterns.
+ Vs = fun_vars(E),
+ {_, Ren1, Env1, S1} = bind_locals(Vs, Ren, Env, S),
+ Vs1 = i_params(Vs, Ren1, Env1),
+
+ %% The body is always visited for value.
+ {B, S2} = i(fun_body(E), value, Ren1, Env1, S1),
+
+ %% We don't bother to include the exact number of free
+ %% variables in the cost for creating a fun-value.
+ S3 = count_size(weight('fun'), S2),
+
+ %% Inlining might have duplicated code, so we must remove
+ %% any 'id'-annotations from the original fun-expression.
+ %% (This forces a later stage to invent new id:s.) This is
+ %% necessary as long as fun:s may still need to be
+ %% identified the old way. Function variables that are not
+ %% in application context also have such annotations, but
+ %% the inlining will currently lose all annotations on
+ %% variable references (I think), so that's not a problem.
+ {set_ann(c_fun(Vs1, B), kill_id_anns(get_ann(E))), S3};
+ #app{} ->
+ %% An application of a fun-expression (in the source code)
+ %% is handled by going directly to `inline'; this is never
+ %% residualised, and we don't set up new counters here. Note
+ %% that inlining of copy-propagated fun-expressions is done
+ %% in `copy'; not here.
+ inline(E, Ctxt, Ren, Env, S)
+ end.
+
+%% A `letrec' requires a circular environment, but is otherwise like a
+%% `let', i.e. like a direct lambda application. Note that only
+%% fun-expressions (lambda abstractions) may occur in the right-hand
+%% side of each definition.
+
+i_letrec(E, Ctxt, Ren, Env, S) ->
+ %% Note that we pass an empty list for the auto-referenced
+ %% (exported) functions here.
+ {Es, B, _, S1} = i_letrec(letrec_defs(E), letrec_body(E), [], Ctxt,
+ Ren, Env, S),
+
+ %% If no bindings remain, only the body is returned.
+ case Es of
+ [] ->
+ {B, S1}; % drop annotations on E
+ _ ->
+ S2 = count_size(weight(letrec), S1),
+ {update_c_letrec(E, Es, B), S2}
+ end.
+
+%% The major part of this is shared by letrec-expressions and module
+%% definitions alike.
+
+i_letrec(Es, B, Xs, Ctxt, Ren, Env, S) ->
+ %% First, we create operands with dummy renamings and environments,
+ %% and with fresh store locations for cached expressions and operand
+ %% info.
+ {Opnds, S1} = mapfoldl(fun ({_, E}, S) ->
+ make_opnd(E, undefined, undefined, S)
+ end,
+ S, Es),
+
+ %% Then we make recursive bindings for the definitions.
+ {Rs, Ren1, Env1, S2} = bind_recursive([F || {F, _} <- Es],
+ Opnds, Ren, Env, S1),
+
+ %% For the function variables listed in Xs (none for a
+ %% letrec-expression), we must make sure that the corresponding
+ %% operand expressions are visited and that the definitions are
+ %% marked as referenced; we also need to return the possibly renamed
+ %% function variables.
+ {Xs1, S3} =
+ mapfoldl(
+ fun (X, S) ->
+ Name = ren__map(var_name(X), Ren1),
+ case env__lookup(Name, Env1) of
+ {ok, R} ->
+ S_1 = i_letrec_export(R, S),
+ {ref_to_var(R), S_1};
+ error ->
+ %% We just skip any exports that are not
+ %% actually defined here, and generate a
+ %% warning message.
+ {N, A} = var_name(X),
+ report_warning("export `~w'/~w "
+ "not defined.\n", [N, A]),
+ {X, S}
+ end
+ end,
+ S2, Xs),
+
+ %% At last, we can then visit the body.
+ {B1, S4} = i(B, Ctxt, Ren1, Env1, S3),
+
+ %% Finally, we create new letrec-bindings for any and all
+ %% residualised definitions. All referenced functions should have
+ %% been visited; the call to `visit' below is expected to retreive a
+ %% cached expression.
+ Rs1 = keep_referenced(Rs, S4),
+ {Es1, S5} = mapfoldl(fun (R, S) ->
+ {E_1, S_1} = visit(R#ref.opnd, S),
+ {{ref_to_var(R), E_1}, S_1}
+ end,
+ S4, Rs1),
+ {Es1, B1, Xs1, S5}.
+
+%% This visits the operand for a function definition exported by a
+%% `letrec' (which is really a `module' module definition, since normal
+%% letrecs have no export declarations). Only the updated state is
+%% returned. We must handle the "inner-pending" flag when doing this;
+%% cf. `i_var'.
+
+i_letrec_export(R, S) ->
+ Opnd = R#ref.opnd,
+ S1 = st__mark_inner_pending(Opnd#opnd.loc, S),
+ {_, S2} = visit(Opnd, S1),
+ {_, S3} = residualize_var(R, st__clear_inner_pending(Opnd#opnd.loc,
+ S2)),
+ S3.
+
+%% This is the `(call e1 e2)' case of the original algorithm. The only
+%% difference is that we must handle multiple (or no) operand
+%% expressions.
+
+i_apply(E, Ctxt, Ren, Env, S) ->
+ {Opnds, S1} = mapfoldl(fun (E, S) ->
+ make_opnd(E, Ren, Env, S)
+ end,
+ S, apply_args(E)),
+
+ %% Allocate a new app-context location and set up an application
+ %% context structure containing the surrounding context.
+ {L, S2} = st__new_app_loc(S1),
+ Ctxt1 = #app{opnds = Opnds, ctxt = Ctxt, loc = L},
+
+ %% Visit the operator expression in the new call context.
+ {E1, S3} = i(apply_op(E), Ctxt1, Ren, Env, S2),
+
+ %% Check the "inlined" flag to find out what to do next. (The store
+ %% location could be recycled after the flag has been tested, but
+ %% there is no real advantage to that, because in practice, only
+ %% 4-5% of all created store locations will ever be reused, while
+ %% there will be a noticable overhead for managing the free list.)
+ case st__get_app_inlined(L, S3) of
+ true ->
+ %% The application was inlined, so we have the final
+ %% expression in `E1'. We just have to handle any operands
+ %% that need to be residualized for effect only (i.e., those
+ %% the values of which are not used).
+ residualize_operands(Opnds, E1, S3);
+ false ->
+ %% Otherwise, `E1' is the residual operator expression. We
+ %% make sure all operands are visited, and rebuild the
+ %% application.
+ {Es, S4} = mapfoldl(fun (Opnd, S) ->
+ visit_and_count_size(Opnd, S)
+ end,
+ S3, Opnds),
+ N = apply_size(length(Es)),
+ {update_c_apply(E, E1, Es), count_size(N, S4)}
+ end.
+
+apply_size(A) ->
+ weight(apply) + weight(argument) * A.
+
+%% Since it is not the task of this transformation to handle
+%% cross-module inlining, all inter-module calls are handled by visiting
+%% the components (the module and function name, and the arguments of
+%% the call) for value. In `effect' context, if the function itself is
+%% known to be completely effect free, the call can be discarded and the
+%% arguments evaluated for effect. Otherwise, if all the visited
+%% arguments are to constants, and the function is known to be safe to
+%% execute at compile time, then we try to evaluate the call. If
+%% evaluation completes normally, the call is replaced by the result;
+%% otherwise the call is residualised.
+
+i_call(E, Ctxt, Ren, Env, S) ->
+ {M, S1} = i(call_module(E), value, Ren, Env, S),
+ {F, S2} = i(call_name(E), value, Ren, Env, S1),
+ As = call_args(E),
+ Arity = length(As),
+
+ %% Check if the name of the called function is static. If so,
+ %% discard the size counts performed above, since the values will
+ %% not cause any runtime cost.
+ Static = is_c_atom(M) and is_c_atom(F),
+ S3 = case Static of
+ true ->
+ revert_size(S, S2);
+ false ->
+ S2
+ end,
+ case Ctxt of
+ effect when Static == true ->
+ case is_safe_call(atom_val(M), atom_val(F), Arity) of
+ true ->
+ %% The result will not be used, and the call is
+ %% effect free, so we create a multiple-value
+ %% aggregate containing the (not yet visited)
+ %% arguments and process that instead.
+ i(c_values(As), effect, Ren, Env, S3);
+ false ->
+ %% We are not allowed to simply discard the call,
+ %% but we can try to evaluate it.
+ i_call_1(Static, M, F, Arity, As, E, Ctxt, Ren, Env,
+ S3)
+ end;
+ _ ->
+ i_call_1(Static, M, F, Arity, As, E, Ctxt, Ren, Env, S3)
+ end.
+
+i_call_1(Static, M, F, Arity, As, E, Ctxt, Ren, Env, S) ->
+ %% Visit the arguments for value.
+ {As1, S1} = mapfoldl(fun (X, A) -> i(X, value, Ren, Env, A) end,
+ S, As),
+ case Static of
+ true ->
+ case erl_bifs:is_pure(atom_val(M), atom_val(F), Arity) of
+ true ->
+ %% It is allowed to evaluate this at compile time.
+ case all_static(As1) of
+ true ->
+ i_call_3(M, F, As1, E, Ctxt, Env, S1);
+ false ->
+ %% See if the call can be rewritten instead.
+ i_call_4(M, F, As1, E, Ctxt, Env, S1)
+ end;
+ false ->
+ i_call_2(M, F, As1, E, S1)
+ end;
+ false ->
+ i_call_2(M, F, As1, E, S1)
+ end.
+
+%% Residualise the call.
+
+i_call_2(M, F, As, E, S) ->
+ N = weight(call) + weight(argument) * length(As),
+ {update_c_call(E, M, F, As), count_size(N, S)}.
+
+%% Attempt to evaluate the call to yield a literal; if that fails, try
+%% to rewrite the expression.
+
+i_call_3(M, F, As, E, Ctxt, Env, S) ->
+ %% Note that we extract the results of argument expessions here; the
+ %% expressions could still be sequences with side effects.
+ Vs = [concrete(result(A)) || A <- As],
+ case catch {ok, apply(atom_val(M), atom_val(F), Vs)} of
+ {ok, V} ->
+ %% Evaluation completed normally - try to turn the result
+ %% back into a syntax tree (representing a literal).
+ case is_literal_term(V) of
+ true ->
+ %% Make a sequence of the arguments (as a
+ %% multiple-value aggregate) and the final value.
+ S1 = count_size(weight(values), S),
+ S2 = count_size(weight(literal), S1),
+ {make_seq(c_values(As), abstract(V)), S2};
+ false ->
+ %% The result could not be represented as a literal.
+ i_call_4(M, F, As, E, Ctxt, Env, S)
+ end;
+ _ ->
+ %% The evaluation attempt did not complete normally.
+ i_call_4(M, F, As, E, Ctxt, Env, S)
+ end.
+
+%% Rewrite the expression, if possible, otherwise residualise it.
+
+i_call_4(M, F, As, E, Ctxt, Env, S) ->
+ case reduce_bif_call(atom_val(M), atom_val(F), As, Env) of
+ false ->
+ %% Nothing more to be done - residualise the call.
+ i_call_2(M, F, As, E, S);
+ {true, E1} ->
+ %% We revisit the result, because the rewriting might have
+ %% opened possibilities for further inlining. Since the
+ %% parts have already been visited once, we use the identity
+ %% renaming here.
+ i(E1, Ctxt, ren__identity(), Env, S)
+ end.
+
+%% For now, we assume that primops cannot be evaluated at compile time,
+%% probably being too special. Also, we have no knowledge about their
+%% side effects.
+
+i_primop(E, Ren, Env, S) ->
+ %% Visit the arguments for value.
+ {As, S1} = mapfoldl(fun (E, S) ->
+ i(E, value, Ren, Env, S)
+ end,
+ S, primop_args(E)),
+ N = weight(primop) + weight(argument) * length(As),
+ {update_c_primop(E, primop_name(E), As), count_size(N, S1)}.
+
+%% This is like having an expression with an extra fun-expression
+%% attached for "exceptional cases"; actually, there are exactly two
+%% parameter variables for the body, but they are easiest handled as if
+%% their number might vary, just as for a `fun'.
+
+i_try(E, Ctxt, Ren, Env, S) ->
+ %% The argument expression is evaluated in `value' context, and the
+ %% surrounding context is propagated into both branches. We do not
+ %% try to recognize cases when the protected expression will
+ %% actually raise an exception. Note that the variables are visited
+ %% as patterns.
+ {A, S1} = i(try_arg(E), value, Ren, Env, S),
+ Vs = try_vars(E),
+ {_, Ren1, Env1, S2} = bind_locals(Vs, Ren, Env, S1),
+ Vs1 = i_params(Vs, Ren1, Env1),
+ {B, S3} = i(try_body(E), Ctxt, Ren1, Env1, S2),
+ case is_safe(A) of
+ true ->
+ %% The `try' wrapper can be dropped in this case. Since the
+ %% expressions have been visited already, the identity
+ %% renaming is used when we revisit the new let-expression.
+ i(c_let(Vs1, A, B), Ctxt, ren__identity(), Env, S3);
+ false ->
+ Evs = try_evars(E),
+ {_, Ren2, Env2, S4} = bind_locals(Evs, Ren, Env, S3),
+ Evs1 = i_params(Evs, Ren2, Env2),
+ {H, S5} = i(try_handler(E), Ctxt, Ren2, Env2, S4),
+ S6 = count_size(weight('try'), S5),
+ {update_c_try(E, A, Vs1, B, Evs1, H), S6}
+ end.
+
+%% A special case of try-expressions:
+
+i_catch(E, Ctxt, Ren, Env, S) ->
+ %% We cannot propagate application contexts into the catch.
+ {E1, S1} = i(catch_body(E), safe_context(Ctxt), Ren, Env, S),
+ case is_safe(E1) of
+ true ->
+ %% The `catch' wrapper can be dropped in this case.
+ {E1, S1};
+ false ->
+ S2 = count_size(weight('catch'), S1),
+ {update_c_catch(E, E1), S2}
+ end.
+
+%% A receive-expression is very much like a case-expression, with the
+%% difference that we do not have access to a switch expression, since
+%% the value being switched on is taken from the mailbox. The fact that
+%% the receive-expression may iterate over an arbitrary number of
+%% messages is not of interest to us. All we can do here is to visit its
+%% subexpressions, and possibly eliminate definitely unselectable
+%% clauses.
+
+i_receive(E, Ctxt, Ren, Env, S) ->
+ %% We first visit the expiry expression (for value) and the expiry
+ %% body (in the surrounding context).
+ {T, S1} = i(receive_timeout(E), value, Ren, Env, S),
+ {B, S2} = i(receive_action(E), Ctxt, Ren, Env, S1),
+
+ %% Then we visit the clauses. Note that application contexts may not
+ %% in general be propagated into the branches (and the expiry body),
+ %% because the execution of the `receive' may remove a message from
+ %% the mailbox as a side effect; the situation is thus analogous to
+ %% that in a `case' expression.
+ Ctxt1 = safe_context(Ctxt),
+ case i_clauses(receive_clauses(E), Ctxt1, Ren, Env, S2) of
+ {false, {[], _, _, Cs}, S3} ->
+ %% We still have a list of clauses. If the list is empty,
+ %% and the expiry expression is the integer zero, the
+ %% expression reduces to the expiry body.
+ if Cs == [] ->
+ case is_c_int(T) andalso (int_val(T) == 0) of
+ true ->
+ {B, S3};
+ false ->
+ i_receive_1(E, Cs, T, B, S3)
+ end;
+ true ->
+ i_receive_1(E, Cs, T, B, S3)
+ end;
+ {true, {_, _, _, Cs}, S3} ->
+ %% Cs is a single clause that will always be matched (if a
+ %% message exists), but we must keep the `receive' statement
+ %% in order to fetch the message from the mailbox.
+ i_receive_1(E, Cs, T, B, S3)
+ end.
+
+i_receive_1(E, Cs, T, B, S) ->
+ %% Here, we just add the base sizes for the receive-expression
+ %% itself and for each remaining clause; cf. `case'.
+ N = weight('receive') + weight(clause) * length(Cs),
+ {update_c_receive(E, Cs, T, B), count_size(N, S)}.
+
+%% A module definition is like a `letrec', with some add-ons (export and
+%% attribute declarations) but without an explicit body. Actually, the
+%% exporting of function names has the same effect as if there was a
+%% body consisting of the list of references to the exported functions.
+%% Thus, the exported functions are exactly those which can be
+%% referenced from outside the module.
+
+i_module(E, Ctxt, Ren, Env, S) ->
+ %% Cf. `i_letrec'. Note that we pass a dummy constant value for the
+ %% "body" parameter.
+ {Es, _, Xs1, S1} = i_letrec(module_defs(E), void(),
+ module_exports(E), Ctxt, Ren, Env, S),
+ %% Sanity check:
+ case Es of
+ [] ->
+ report_warning("no function definitions remaining "
+ "in module `~s'.\n",
+ [atom_name(module_name(E))]);
+ _ ->
+ ok
+ end,
+ E1 = update_c_module(E, module_name(E), Xs1, module_attrs(E), Es),
+ {E1, count_size(weight(module), S1)}.
+
+%% Binary-syntax expressions are too complicated to do anything
+%% interesting with here - that is beyond the scope of this program;
+%% also, their construction could have side effects, so even in effect
+%% context we can't remove them. (We don't bother to identify cases of
+%% "safe" unused binaries which could be removed.)
+
+i_binary(E, Ren, Env, S) ->
+ %% Visit the segments for value.
+ {Es, S1} = mapfoldl(fun (E, S) ->
+ i_bitstr(E, Ren, Env, S)
+ end,
+ S, binary_segments(E)),
+ S2 = count_size(weight(binary), S1),
+ {update_c_binary(E, Es), S2}.
+
+i_bitstr(E, Ren, Env, S) ->
+ %% It is not necessary to visit the Unit, Type and Flags fields,
+ %% since these are always literals.
+ {Val, S1} = i(bitstr_val(E), value, Ren, Env, S),
+ {Size, S2} = i(bitstr_size(E), value, Ren, Env, S1),
+ Unit = bitstr_unit(E),
+ Type = bitstr_type(E),
+ Flags = bitstr_flags(E),
+ S3 = count_size(weight(bitstr), S2),
+ {update_c_bitstr(E, Val, Size, Unit, Type, Flags), S3}.
+
+%% This is a simplified version of `i_pattern', for lists of parameter
+%% variables only. It does not modify the state.
+
+i_params([V | Vs], Ren, Env) ->
+ Name = ren__map(var_name(V), Ren),
+ case env__lookup(Name, Env) of
+ {ok, R} ->
+ [ref_to_var(R) | i_params(Vs, Ren, Env)];
+ error ->
+ report_internal_error("variable `~w' not bound "
+ "in pattern.\n", [Name]),
+ exit(error)
+ end;
+i_params([], _, _) ->
+ [].
+
+%% For ordinary patterns, we just visit to rename variables and count
+%% the size/cost. All occurring binding instances of variables should
+%% already have been added to the renaming and environment; however, to
+%% handle the size expressions of binary-syntax patterns, we must pass
+%% the renaming and environment of the containing expression
+
+i_pattern(E, Ren, Env, Ren0, Env0, S) ->
+ case type(E) of
+ var ->
+ %% Count no size.
+ Name = ren__map(var_name(E), Ren),
+ case env__lookup(Name, Env) of
+ {ok, R} ->
+ {ref_to_var(R), S};
+ error ->
+ report_internal_error("variable `~w' not bound "
+ "in pattern.\n", [Name]),
+ exit(error)
+ end;
+ alias ->
+ %% Count no size.
+ V = alias_var(E),
+ Name = ren__map(var_name(V), Ren),
+ case env__lookup(Name, Env) of
+ {ok, R} ->
+ %% Visit the subpattern and recompose.
+ V1 = ref_to_var(R),
+ {P, S1} = i_pattern(alias_pat(E), Ren, Env, Ren0,
+ Env0, S),
+ {update_c_alias(E, V1, P), S1};
+ error ->
+ report_internal_error("variable `~w' not bound "
+ "in pattern.\n", [Name]),
+ exit(error)
+ end;
+ binary ->
+ {Es, S1} = mapfoldl(fun (E, S) ->
+ i_bitstr_pattern(E, Ren, Env,
+ Ren0, Env0, S)
+ end,
+ S, binary_segments(E)),
+ S2 = count_size(weight(binary), S1),
+ {update_c_binary(E, Es), S2};
+ _ ->
+ case is_literal(E) of
+ true ->
+ {E, count_size(weight(literal), S)};
+ false ->
+ {Es1, S1} = mapfoldl(fun (E, S) ->
+ i_pattern(E, Ren, Env,
+ Ren0, Env0,
+ S)
+ end,
+ S, data_es(E)),
+ %% We assume that in general, the elements of the
+ %% constructor will all be fetched.
+ N = weight(data) + length(Es1) * weight(element),
+ S2 = count_size(N, S1),
+ {update_data(E, data_type(E), Es1), S2}
+ end
+ end.
+
+i_bitstr_pattern(E, Ren, Env, Ren0, Env0, S) ->
+ %% It is not necessary to visit the Unit, Type and Flags fields,
+ %% since these are always literals. The Value field is a limited
+ %% pattern - either a literal or an unbound variable. The Size field
+ %% is a limited expression - either a literal or a variable bound in
+ %% the environment of the containing expression.
+ {Val, S1} = i_pattern(bitstr_val(E), Ren, Env, Ren0, Env0, S),
+ {Size, S2} = i(bitstr_size(E), value, Ren0, Env0, S1),
+ Unit = bitstr_unit(E),
+ Type = bitstr_type(E),
+ Flags = bitstr_flags(E),
+ S3 = count_size(weight(bitstr), S2),
+ {update_c_bitstr(E, Val, Size, Unit, Type, Flags), S3}.
+
+
+%% ---------------------------------------------------------------------
+%% Other central inlining functions
+
+%% It is assumed here that `E' is a fun-expression and the context is an
+%% app-structure. If the inlining might be aborted for some reason, a
+%% corresponding catch should have been set up before entering `inline'.
+%%
+%% Note: if the inlined body is a lambda abstraction, and the
+%% surrounding context of the app-context is also an app-context, the
+%% `inlined' flag of the outermost context will be set before that of
+%% the inner context is set. E.g.: `let F = fun (X) -> fun (Y) -> E in
+%% apply apply F(A)(B)' will propagate the body of F, which is a lambda
+%% abstraction, into the outer application context, which will be
+%% inlined to produce expression `E', and the flag of the outer context
+%% will be set. Upon return, the flag of the inner context will also be
+%% set. However, the flags are then tested in innermost-first order.
+%% Thus, if some inlining attempt is aborted, the `inlined' flags of any
+%% nested app-contexts must be cleared.
+%%
+%% This implementation does nothing to handle inlining of calls to
+%% recursive functions in a smart way. This means that as long as the
+%% size and effort counters do not prevent it, the function body will be
+%% inlined (i.e., the first iteration will be unrolled), and the
+%% recursive calls will be residualized.
+
+inline(E, #app{opnds = Opnds, ctxt = Ctxt, loc = L}, Ren, Env, S) ->
+ %% Check that the arities match:
+ Vs = fun_vars(E),
+ if length(Opnds) /= length(Vs) ->
+ report_error("function called with wrong number "
+ "of arguments!\n"),
+ %% TODO: should really just residualise the call...
+ exit(error);
+ true ->
+ ok
+ end,
+ %% Create local bindings for the parameters to their respective
+ %% operand structures from the app-structure, and visit the body in
+ %% the context saved in the structure.
+ {Rs, Ren1, Env1, S1} = bind_locals(Vs, Opnds, Ren, Env, S),
+ {E1, S2} = i(fun_body(E), Ctxt, Ren1, Env1, S1),
+
+ %% Create necessary bindings and/or set flags.
+ {E2, S3} = make_let_bindings(Rs, E1, S2),
+
+ %% Lastly, flag the application as inlined, since the inlining
+ %% attempt was not aborted before we reached this point.
+ {E2, st__set_app_inlined(L, S3)}.
+
+%% For the (possibly renamed) argument variables to an inlined call,
+%% either create `let' bindings for them, if they are still referenced
+%% in the residual expression (in C/Lisp, also if they are assigned to),
+%% or otherwise (if they are not referenced or assigned) mark them for
+%% evaluation for side effects.
+
+make_let_bindings([R | Rs], E, S) ->
+ {E1, S1} = make_let_bindings(Rs, E, S),
+ make_let_binding(R, E1, S1);
+make_let_bindings([], E, S) ->
+ {E, S}.
+
+make_let_binding(R, E, S) ->
+ %% The `referenced' flag is conservatively computed. We therefore
+ %% first check some simple cases where parameter R is definitely not
+ %% referenced in the resulting body E.
+ case is_literal(E) of
+ true ->
+ %% A constant contains no variable references.
+ make_let_binding_1(R, E, S);
+ false ->
+ case is_c_var(E) of
+ true ->
+ case var_name(E) =:= R#ref.name of
+ true ->
+ %% The body is simply the parameter variable
+ %% itself. Visit the operand for value and
+ %% substitute the result for the body.
+ visit_and_count_size(R#ref.opnd, S);
+ false ->
+ %% Not the same variable, so the parameter
+ %% is not referenced at all.
+ make_let_binding_1(R, E, S)
+ end;
+ false ->
+ %% Proceed to check the `referenced' flag.
+ case st__get_var_referenced(R#ref.loc, S) of
+ true ->
+ %% The parameter is probably referenced in
+ %% the residual code (although it might not
+ %% be). Visit the operand for value and
+ %% create a let-binding.
+ {E1, S1} = visit_and_count_size(R#ref.opnd,
+ S),
+ S2 = count_size(weight('let'), S1),
+ {c_let([ref_to_var(R)], E1, E), S2};
+ false ->
+ %% The parameter is definitely not
+ %% referenced.
+ make_let_binding_1(R, E, S)
+ end
+ end
+ end.
+
+%% This marks the operand for evaluation for effect.
+
+make_let_binding_1(R, E, S) ->
+ Opnd = R#ref.opnd,
+ {E, st__set_opnd_effect(Opnd#opnd.loc, S)}.
+
+%% Here, `R' is the ref-structure which is the target of the copy
+%% propagation, and `Opnd' is a visited operand structure, to be
+%% propagated through `R' if possible - if not, `R' is residualised.
+%% `Opnd' is normally the operand that `R' is bound to, and `E' is the
+%% result of visiting `Opnd' for value; we pass this as an argument so
+%% we don't have to fetch it multiple times (because we don't have
+%% constant time access).
+%%
+%% We also pass the environment of the site of the variable reference,
+%% for use when inlining a propagated fun-expression. In the original
+%% algorithm by Waddell, the environment used for inlining such cases is
+%% the identity mapping, because the fun-expression body has already
+%% been visited for value, and their algorithm combines renaming of
+%% source-code variables with the looking up of information about
+%% residual-code variables. We, however, need to check the environment
+%% of the call site when creating new non-shadowed variables, but we
+%% must avoid repeated renaming. We therefore separate the renaming and
+%% the environment (as in the renaming algorithm of Peyton-Jones and
+%% Marlow). This also makes our implementation more general, compared to
+%% the original algorithm, because we do not give up on propagating
+%% variables that were free in the fun-body.
+%%
+%% Example:
+%%
+%% let F = fun (X) -> {'foo', X} in
+%% let G = fun (H) -> apply H(F) % F is free in the fun G
+%% in apply G(fun (F) -> apply F(42))
+%% =>
+%% let F = fun (X) -> {'foo', X} in
+%% apply (fun (H) -> apply H(F))(fun (F) -> apply F(42))
+%% =>
+%% let F = fun (X) -> {'foo', X} in
+%% apply (fun (F) -> apply F(42))(F)
+%% =>
+%% let F = fun (X) -> {'foo', X} in
+%% apply F(42)
+%% =>
+%% apply (fun (X) -> {'foo', X})(2)
+%% =>
+%% {'foo', 42}
+%%
+%% The original algorithm would give up at stage 4, because F was free
+%% in the propagated fun-expression. Our version inlines this example
+%% completely.
+
+copy(R, Opnd, E, Ctxt, Env, S) ->
+ case is_c_var(E) of
+ true ->
+ %% The operand reduces to another variable - get its
+ %% ref-structure and attempt to propagate further.
+ copy_var(env__get(var_name(E), Opnd#opnd.env), Ctxt, Env,
+ S);
+ false ->
+ %% Apart from variables and functional values (the latter
+ %% are handled by `copy_1' below), only constant literals
+ %% are copyable in general; other things, including e.g.
+ %% tuples `{foo, X}', could cause duplication of work, and
+ %% are not copy propagated.
+ case is_literal(E) of
+ true ->
+ {E, count_size(weight(literal), S)};
+ false ->
+ copy_1(R, Opnd, E, Ctxt, Env, S)
+ end
+ end.
+
+copy_var(R, Ctxt, Env, S) ->
+ %% (In Lisp or C, if this other variable might be assigned to, we
+ %% should residualize the "parent" instead, so we don't bypass any
+ %% destructive updates.)
+ case R#ref.opnd of
+ undefined ->
+ %% This variable is not bound to an expression, so just
+ %% residualize it.
+ residualize_var(R, S);
+ Opnd ->
+ %% Note that because operands are always visited before
+ %% copied, all copyable operand expressions will be
+ %% propagated through any number of bindings. If `R' was
+ %% bound to a constant literal, we would never have reached
+ %% this point.
+ case st__lookup_opnd_cache(Opnd#opnd.loc, S) of
+ error ->
+ %% The result for this operand is not yet ready
+ %% (which should mean that it is a recursive
+ %% reference). Thus, we must residualise the
+ %% variable.
+ residualize_var(R, S);
+ {ok, #cache{expr = E1}} ->
+ %% The result for the operand is ready, so we can
+ %% proceed to propagate it.
+ copy_1(R, Opnd, E1, Ctxt, Env, S)
+ end
+ end.
+
+copy_1(R, Opnd, E, Ctxt, Env, S) ->
+ %% Fun-expression (lambdas) are a bit special; they are copyable,
+ %% but should preferably not be duplicated, so they should not be
+ %% copy propagated except into application contexts, where they can
+ %% be inlined.
+ case is_c_fun(E) of
+ true ->
+ case Ctxt of
+ #app{} ->
+ %% First test if the operand is "outer-pending"; if
+ %% so, don't inline.
+ case st__test_outer_pending(Opnd#opnd.loc, S) of
+ false ->
+ copy_inline(R, Opnd, E, Ctxt, Env, S);
+ true ->
+ %% Cyclic reference forced inlining to stop
+ %% (avoiding infinite unfolding).
+ residualize_var(R, S)
+ end;
+ _ ->
+ residualize_var(R, S)
+ end;
+ false ->
+ %% We have no other cases to handle here
+ residualize_var(R, S)
+ end.
+
+%% This inlines a function value that was propagated to an application
+%% context. The inlining is done with an identity renaming (since the
+%% expression is already visited) but in the environment of the call
+%% site (which is OK because of the no-shadowing strategy for renaming,
+%% and because the domain of our environments are the residual-program
+%% variables instead of the source-program variables). Note that we must
+%% first set the "outer-pending" flag, and clear it afterwards.
+
+copy_inline(R, Opnd, E, Ctxt, Env, S) ->
+ S1 = st__mark_outer_pending(Opnd#opnd.loc, S),
+ case catch {ok, copy_inline_1(R, E, Ctxt, Env, S1)} of
+ {ok, {E1, S2}} ->
+ {E1, st__clear_outer_pending(Opnd#opnd.loc, S2)};
+ {'EXIT', X} ->
+ exit(X);
+ X ->
+ %% If we use destructive update for the `outer-pending'
+ %% flag, we must make sure to clear it upon a nonlocal
+ %% return.
+ st__clear_outer_pending(Opnd#opnd.loc, S1),
+ throw(X)
+ end.
+
+%% If the current effort counter was passive, we use a new active effort
+%% counter with the inherited limit for this particular inlining.
+
+copy_inline_1(R, E, Ctxt, Env, S) ->
+ case effort_is_active(S) of
+ true ->
+ copy_inline_2(R, E, Ctxt, Env, S);
+ false ->
+ S1 = new_active_effort(get_effort_limit(S), S),
+ case catch {ok, copy_inline_2(R, E, Ctxt, Env, S1)} of
+ {ok, {E1, S2}} ->
+ %% Revert to the old effort counter.
+ {E1, revert_effort(S, S2)};
+ {counter_exceeded, effort, _} ->
+ %% Aborted this inlining attempt because too much
+ %% effort was spent. Residualize the variable and
+ %% revert to the previous state.
+ residualize_var(R, S);
+ {'EXIT', X} ->
+ exit(X);
+ X ->
+ throw(X)
+ end
+ end.
+
+%% Regardless of whether the current size counter is active or not, we
+%% use a new active size counter for each inlining. If the current
+%% counter was passive, the new counter gets the inherited size limit;
+%% if it was active, the size limit of the new counter will be equal to
+%% the remaining budget of the current counter (which itself is not
+%% affected by the inlining). This distributes the size budget more
+%% evenly over "inlinings within inlinings", so that the whole size
+%% budget is not spent on the first few call sites (in an inlined
+%% function body) forcing the remaining call sites to be residualised.
+
+copy_inline_2(R, E, Ctxt, Env, S) ->
+ Limit = case size_is_active(S) of
+ true ->
+ get_size_limit(S) - get_size_value(S);
+ false ->
+ get_size_limit(S)
+ end,
+ %% Add the cost of the application to the new size limit, so we
+ %% always inline functions that are small enough, even if `Limit' is
+ %% close to zero at this point. (This is an extension to the
+ %% original algorithm.)
+ S1 = new_active_size(Limit + apply_size(length(Ctxt#app.opnds)), S),
+ case catch {ok, inline(E, Ctxt, ren__identity(), Env, S1)} of
+ {ok, {E1, S2}} ->
+ %% Revert to the old size counter.
+ {E1, revert_size(S, S2)};
+ {counter_exceeded, size, S2} ->
+ %% Aborted this inlining attempt because it got too big.
+ %% Residualize the variable and revert to the old size
+ %% counter. (It is important that we do not also revert the
+ %% effort counter here. Because the effort and size counters
+ %% are always set up together, we know that the effort
+ %% counter returned in S2 is the same that was passed to
+ %% `inline'.)
+ S3 = revert_size(S, S2),
+ %% If we use destructive update for the `inlined' flag, we
+ %% must make sure to clear the flags of any nested
+ %% app-contexts upon aborting; see `inline' for details.
+ reset_nested_apps(Ctxt, S3), % for effect
+ residualize_var(R, S3);
+ {'EXIT', X} ->
+ exit(X);
+ X ->
+ throw(X)
+ end.
+
+reset_nested_apps(#app{ctxt = Ctxt, loc = L}, S) ->
+ reset_nested_apps(Ctxt, st__clear_app_inlined(L, S));
+reset_nested_apps(_, S) ->
+ S.
+
+
+%% ---------------------------------------------------------------------
+%% Support functions
+
+new_var(Env) ->
+ Name = env__new_vname(Env),
+ c_var(Name).
+
+residualize_var(R, S) ->
+ S1 = count_size(weight(var), S),
+ {ref_to_var(R), st__set_var_referenced(R#ref.loc, S1)}.
+
+%% This function returns the value-producing subexpression of any
+%% expression. (Except for sequencing expressions, this is the
+%% expression itself.)
+
+result(E) ->
+ case is_c_seq(E) of
+ true ->
+ %% Also see `make_seq', which is used in all places to build
+ %% sequences so that they are always nested in the first
+ %% position.
+ seq_body(E);
+ false ->
+ E
+ end.
+
+%% This function rewrites E to `do A1 E' if A is `do A1 A2', and
+%% otherwise returns E unchanged.
+
+hoist_effects(A, E) ->
+ case type(A) of
+ seq -> make_seq(seq_arg(A), E);
+ _ -> E
+ end.
+
+%% This "build sequencing expression" operation assures that sequences
+%% are always nested in the first position, which makes it easy to find
+%% the actual value-producing expression of a sequence (cf. `result').
+
+make_seq(E1, E2) ->
+ case is_safe(E1) of
+ true ->
+ %% The first expression can safely be dropped.
+ E2;
+ false ->
+ %% If `E1' is a sequence whose final expression has no side
+ %% effects, then we can lose *that* expression when we
+ %% compose the new sequence, since its value will not be
+ %% used.
+ E3 = case is_c_seq(E1) of
+ true ->
+ case is_safe(seq_body(E1)) of
+ true ->
+ %% Drop the final expression.
+ seq_arg(E1);
+ false ->
+ E1
+ end;
+ false ->
+ E1
+ end,
+ case is_c_seq(E2) of
+ true ->
+ %% `E2' is a sequence (E2' E2''), so we must
+ %% rearrange the nesting to ((E1, E2') E2''), to
+ %% preserve the invariant. Annotations on `E2' are
+ %% lost.
+ c_seq(c_seq(E3, seq_arg(E2)), seq_body(E2));
+ false ->
+ c_seq(E3, E2)
+ end
+ end.
+
+%% Currently, safe expressions include variables, lambda expressions,
+%% constructors with safe subexpressions (this includes atoms, integers,
+%% empty lists, etc.), seq-, let- and letrec-expressions with safe
+%% subexpressions, try- and catch-expressions with safe subexpressions
+%% and calls to safe functions with safe argument subexpressions.
+%% Binaries seem too tricky to be considered.
+
+is_safe(E) ->
+ case is_data(E) of
+ true ->
+ is_safe_list(data_es(E));
+ false ->
+ case type(E) of
+ var ->
+ true;
+ 'fun' ->
+ true;
+ values ->
+ is_safe_list(values_es(E));
+ 'seq' ->
+ case is_safe(seq_arg(E)) of
+ true ->
+ is_safe(seq_body(E));
+ false ->
+ false
+ end;
+ 'let' ->
+ case is_safe(let_arg(E)) of
+ true ->
+ is_safe(let_body(E));
+ false ->
+ false
+ end;
+ letrec ->
+ is_safe(letrec_body(E));
+ 'try' ->
+ %% If the argument expression is not safe, it could
+ %% be modifying the state; thus, even if the body is
+ %% safe, the try-expression as a whole would not be.
+ %% If the argument is safe, the handler is not used.
+ case is_safe(try_arg(E)) of
+ true ->
+ is_safe(try_body(E));
+ false ->
+ false
+ end;
+ 'catch' ->
+ is_safe(catch_body(E));
+ call ->
+ M = call_module(E),
+ F = call_name(E),
+ case is_c_atom(M) and is_c_atom(F) of
+ true ->
+ As = call_args(E),
+ case is_safe_list(As) of
+ true ->
+ is_safe_call(atom_val(M),
+ atom_val(F),
+ length(As));
+ false ->
+ false
+ end;
+ false ->
+ false
+ end;
+ _ ->
+ false
+ end
+ end.
+
+is_safe_list([E | Es]) ->
+ case is_safe(E) of
+ true ->
+ is_safe_list(Es);
+ false ->
+ false
+ end;
+is_safe_list([]) ->
+ true.
+
+is_safe_call(M, F, A) ->
+ erl_bifs:is_safe(M, F, A).
+
+%% When setting up local variables, we only create new names if we have
+%% to, according to the "no-shadowing" strategy.
+
+make_locals(Vs, Ren, Env) ->
+ make_locals(Vs, [], Ren, Env).
+
+make_locals([V | Vs], As, Ren, Env) ->
+ Name = var_name(V),
+ case env__is_defined(Name, Env) of
+ false ->
+ %% The variable need not be renamed. Just make sure that the
+ %% renaming will map it to itself.
+ Name1 = Name,
+ Ren1 = ren__add_identity(Name, Ren);
+ true ->
+ %% The variable must be renamed to maintain the no-shadowing
+ %% invariant. Do the right thing for function variables.
+ Name1 = case Name of
+ {A, N} ->
+ env__new_fname(A, N, Env);
+ _ ->
+ env__new_vname(Env)
+ end,
+ Ren1 = ren__add(Name, Name1, Ren)
+ end,
+ %% This temporary binding is added for correct new-key generation.
+ Env1 = env__bind(Name1, dummy, Env),
+ make_locals(Vs, [Name1 | As], Ren1, Env1);
+make_locals([], As, Ren, Env) ->
+ {reverse(As), Ren, Env}.
+
+%% This adds let-bindings for the source code variables in `Es' to the
+%% environment `Env'.
+%%
+%% Note that we always assign a new state location for the
+%% residual-program variable, since we cannot know when a location for a
+%% particular variable in the source code can be reused.
+
+bind_locals(Vs, Ren, Env, S) ->
+ Opnds = lists:duplicate(length(Vs), undefined),
+ bind_locals(Vs, Opnds, Ren, Env, S).
+
+bind_locals(Vs, Opnds, Ren, Env, S) ->
+ {Ns, Ren1, Env1} = make_locals(Vs, Ren, Env),
+ {Rs, Env2, S1} = bind_locals_1(Ns, Opnds, [], Env1, S),
+ {Rs, Ren1, Env2, S1}.
+
+%% Note that the `Vs' are currently not used for anything except the
+%% number of variables. If we were maintaining "source-referenced"
+%% flags, then the flag in the new variable should be initialized to the
+%% current value of the (residual-) referenced-flag of the "parent".
+
+bind_locals_1([N | Ns], [Opnd | Opnds], Rs, Env, S) ->
+ {R, S1} = new_ref(N, Opnd, S),
+ Env1 = env__bind(N, R, Env),
+ bind_locals_1(Ns, Opnds, [R | Rs], Env1, S1);
+bind_locals_1([], [], Rs, Env, S) ->
+ {lists:reverse(Rs), Env, S}.
+
+new_refs(Ns, Opnds, S) ->
+ new_refs(Ns, Opnds, [], S).
+
+new_refs([N | Ns], [Opnd | Opnds], Rs, S) ->
+ {R, S1} = new_ref(N, Opnd, S),
+ new_refs(Ns, Opnds, [R | Rs], S1);
+new_refs([], [], Rs, S) ->
+ {lists:reverse(Rs), S}.
+
+new_ref(N, Opnd, S) ->
+ {L, S1} = st__new_ref_loc(S),
+ {#ref{name = N, opnd = Opnd, loc = L}, S1}.
+
+%% This adds recursive bindings for the source code variables in `Es' to
+%% the environment `Env'. Note that recursive binding of a set of
+%% variables is an atomic operation on the environment - they cannot be
+%% added one at a time.
+
+bind_recursive(Vs, Opnds, Ren, Env, S) ->
+ {Ns, Ren1, Env1} = make_locals(Vs, Ren, Env),
+ {Rs, S1} = new_refs(Ns, Opnds, S),
+
+ %% When this fun-expression is evaluated, it updates the operand
+ %% structure in the ref-structure to contain the recursively defined
+ %% environment and the correct renaming.
+ Fun = fun (R, Env) ->
+ Opnd = R#ref.opnd,
+ R#ref{opnd = Opnd#opnd{ren = Ren1, env = Env}}
+ end,
+ {Rs, Ren1, env__bind_recursive(Ns, Rs, Fun, Env1), S1}.
+
+safe_context(Ctxt) ->
+ case Ctxt of
+ #app{} ->
+ value;
+ _ ->
+ Ctxt
+ end.
+
+%% Note that the name of a variable encodes its type: a "plain" variable
+%% or a function variable. The latter kind also contains an arity number
+%% which should be preserved upon renaming.
+
+ref_to_var(#ref{name = Name}) ->
+ %% If we were maintaining "source-referenced" flags, the annotation
+ %% `add_ann([#source_ref{loc = L}], E)' should also be done here, to
+ %% make the algorithm reapplicable. This is however not necessary
+ %% since there are no destructive variable assignments in Erlang.
+ c_var(Name).
+
+%% Including the effort counter of the call site assures that the cost
+%% of processing an operand via `visit' is charged to the correct
+%% counter. In particular, if the effort counter of the call site was
+%% passive, the operands will also be processed with a passive counter.
+
+make_opnd(E, Ren, Env, S) ->
+ {L, S1} = st__new_opnd_loc(S),
+ C = st__get_effort(S1),
+ Opnd = #opnd{expr = E, ren = Ren, env = Env, loc = L, effort = C},
+ {Opnd, S1}.
+
+keep_referenced(Rs, S) ->
+ [R || R <- Rs, st__get_var_referenced(R#ref.loc, S)].
+
+residualize_operands(Opnds, E, S) ->
+ foldr(fun (Opnd, {E, S}) -> residualize_operand(Opnd, E, S) end,
+ {E, S}, Opnds).
+
+%% This is the only case where an operand expression can be visited in
+%% `effect' context instead of `value' context.
+
+residualize_operand(Opnd, E, S) ->
+ case st__get_opnd_effect(Opnd#opnd.loc, S) of
+ true ->
+ %% The operand has not been visited, so we do that now, but
+ %% in `effect' context. (Waddell's algoritm does some stuff
+ %% here to account specially for the operand size, which
+ %% appears unnecessary.)
+ {E1, S1} = i(Opnd#opnd.expr, effect, Opnd#opnd.ren,
+ Opnd#opnd.env, S),
+ {make_seq(E1, E), S1};
+ false ->
+ {E, S}
+ end.
+
+%% The `visit' function always visits the operand expression in `value'
+%% context (`residualize_operand' visits an unreferenced operand
+%% expression in `effect' context when necessary). A new passive size
+%% counter is used for visiting the operand, the final value of which is
+%% then cached along with the resulting expression.
+%%
+%% Note that the effort counter of the call site, included in the
+%% operand structure, is not a shared object. Thus, the effort budget is
+%% actually reused over all occurrences of the operands of a single
+%% application. This does not appear to be a problem; just a
+%% modification of the algorithm.
+
+visit(Opnd, S) ->
+ {C, S1} = visit_1(Opnd, S),
+ {C#cache.expr, S1}.
+
+visit_and_count_size(Opnd, S) ->
+ {C, S1} = visit_1(Opnd, S),
+ {C#cache.expr, count_size(C#cache.size, S1)}.
+
+visit_1(Opnd, S) ->
+ case st__lookup_opnd_cache(Opnd#opnd.loc, S) of
+ error ->
+ %% Use a new, passive, size counter for visiting operands,
+ %% and use the effort counter of the context of the operand.
+ %% It turns out that if the latter is active, it must be the
+ %% same object as the one currently used, and if it is
+ %% passive, it does not matter if it is the same object as
+ %% any other counter.
+ Effort = Opnd#opnd.effort,
+ Active = counter__is_active(Effort),
+ S1 = case Active of
+ true ->
+ S; % don't change effort counter
+ false ->
+ st__set_effort(Effort, S)
+ end,
+ S2 = new_passive_size(get_size_limit(S1), S1),
+
+ %% Visit the expression and cache the result, along with the
+ %% final value of the size counter.
+ {E, S3} = i(Opnd#opnd.expr, value, Opnd#opnd.ren,
+ Opnd#opnd.env, S2),
+ Size = get_size_value(S3),
+ C = #cache{expr = E, size = Size},
+ S4 = revert_size(S, st__set_opnd_cache(Opnd#opnd.loc, C,
+ S3)),
+ case Active of
+ true ->
+ {C, S4}; % keep using the same effort counter
+ false ->
+ {C, revert_effort(S, S4)}
+ end;
+ {ok, C} ->
+ {C, S}
+ end.
+
+%% Create a pattern matching template for an expression. A template
+%% contains only data constructors (including atomic ones) and
+%% variables, and compound literals are not folded into a single node.
+%% Each node in the template is annotated with the variable which holds
+%% the corresponding subexpression; these are new, unique variables not
+%% existing in the given `Env'. Returns `{Template, Variables, NewEnv}',
+%% where `Variables' is the list of all variables corresponding to nodes
+%% in the template *listed in reverse dependency order*, and `NewEnv' is
+%% `Env' augmented with mappings from the variable names to
+%% subexpressions of `E' (not #ref{} structures!) rewritten so that no
+%% computations are duplicated. `Variables' is guaranteed to be nonempty
+%% - at least the root node will always be bound to a new variable.
+
+make_template(E, Env) ->
+ make_template(E, [], Env).
+
+make_template(E, Vs0, Env0) ->
+ case is_data(E) of
+ true ->
+ {Ts, {Vs1, Env1}} = mapfoldl(
+ fun (E, {Vs0, Env0}) ->
+ {T, Vs1, Env1} =
+ make_template(E, Vs0,
+ Env0),
+ {T, {Vs1, Env1}}
+ end,
+ {Vs0, Env0}, data_es(E)),
+ T = make_data_skel(data_type(E), Ts),
+ E1 = update_data(E, data_type(E),
+ [hd(get_ann(T)) || T <- Ts]),
+ V = new_var(Env1),
+ Env2 = env__bind(var_name(V), E1, Env1),
+ {set_ann(T, [V]), [V | Vs1], Env2};
+ false ->
+ case type(E) of
+ seq ->
+ %% For a sequencing, we can rebind the variable used
+ %% for the body, and pass on the template as it is.
+ {T, Vs1, Env1} = make_template(seq_body(E), Vs0,
+ Env0),
+ V = var_name(hd(get_ann(T))),
+ E1 = update_c_seq(E, seq_arg(E), env__get(V, Env1)),
+ Env2 = env__bind(V, E1, Env1),
+ {T, Vs1, Env2};
+ _ ->
+ V = new_var(Env0),
+ Env1 = env__bind(var_name(V), E, Env0),
+ {set_ann(V, [V]), [V | Vs0], Env1}
+ end
+ end.
+
+%% Two clauses are equivalent if their bodies are equivalent expressions
+%% given that the respective pattern variables are local.
+
+equivalent_clauses([]) ->
+ true;
+equivalent_clauses([C | Cs]) ->
+ Env = cerl_trees:variables(c_values(clause_pats(C))),
+ equivalent_clauses_1(clause_body(C), Cs, Env).
+
+equivalent_clauses_1(E, [C | Cs], Env) ->
+ Env1 = cerl_trees:variables(c_values(clause_pats(C))),
+ case equivalent(E, clause_body(C), ordsets:union(Env, Env1)) of
+ true ->
+ equivalent_clauses_1(E, Cs, Env);
+ false ->
+ false
+ end;
+equivalent_clauses_1(_, [], _Env) ->
+ true.
+
+%% Two expressions are equivalent if and only if they yield the same
+%% value and has the same side effects in the same order. Currently, we
+%% only accept equality between constructors (constants) and nonlocal
+%% variables, since this should cover most cases of interest. If a
+%% variable is locally bound in one expression, it cannot be equivalent
+%% to one with the same name in the other expression, so we need not
+%% keep track of two environments.
+
+equivalent(E1, E2, Env) ->
+ case is_data(E1) of
+ true ->
+ case is_data(E2) of
+ true ->
+ T1 = {data_type(E1), data_arity(E1)},
+ T2 = {data_type(E2), data_arity(E2)},
+ %% Note that we must test for exact equality.
+ if T1 =:= T2 ->
+ equivalent_lists(data_es(E1), data_es(E2),
+ Env);
+ true ->
+ false
+ end;
+ false ->
+ false
+ end;
+ false ->
+ case type(E1) of
+ var ->
+ case is_c_var(E2) of
+ true ->
+ N1 = var_name(E1),
+ N2 = var_name(E2),
+ if N1 =:= N2 ->
+ not ordsets:is_element(N1, Env);
+ true ->
+ false
+ end;
+ false ->
+ false
+ end;
+ _ ->
+ %% Other constructs are not being considered.
+ false
+ end
+ end.
+
+equivalent_lists([E1 | Es1], [E2 | Es2], Env) ->
+ equivalent(E1, E2, Env) and equivalent_lists(Es1, Es2, Env);
+equivalent_lists([], [], _) ->
+ true;
+equivalent_lists(_, _, _) ->
+ false.
+
+%% Return `false' or `{true, EffectExpr, ValueExpr}'. The environment is
+%% passed for new-variable generation.
+
+reduce_bif_call(M, F, As, Env) ->
+ reduce_bif_call_1(M, F, length(As), As, Env).
+
+reduce_bif_call_1(erlang, element, 2, [X, Y], _Env) ->
+ case is_c_int(X) and is_c_tuple(Y) of
+ true ->
+ %% We are free to change the relative evaluation order of
+ %% the elements, so lifting out a particular element is OK.
+ T = list_to_tuple(tuple_es(Y)),
+ N = int_val(X),
+ if integer(N), N > 0, N =< size(T) ->
+ E = element(N, T),
+ Es = tuple_to_list(setelement(N, T, void())),
+ {true, make_seq(c_tuple(Es), E)};
+ true ->
+ false
+ end;
+ false ->
+ false
+ end;
+reduce_bif_call_1(erlang, hd, 1, [X], _Env) ->
+ case is_c_cons(X) of
+ true ->
+ %% Cf. `element/2' above.
+ {true, make_seq(cons_tl(X), cons_hd(X))};
+ false ->
+ false
+ end;
+reduce_bif_call_1(erlang, length, 1, [X], _Env) ->
+ case is_c_list(X) of
+ true ->
+ %% Cf. `erlang:size/1' below.
+ {true, make_seq(X, c_int(list_length(X)))};
+ false ->
+ false
+ end;
+reduce_bif_call_1(erlang, list_to_tuple, 1, [X], _Env) ->
+ case is_c_list(X) of
+ true ->
+ %% This does not actually preserve all the evaluation order
+ %% constraints of the list, but I don't imagine that it will
+ %% be a problem.
+ {true, c_tuple(list_elements(X))};
+ false ->
+ false
+ end;
+reduce_bif_call_1(erlang, setelement, 3, [X, Y, Z], Env) ->
+ case is_c_int(X) and is_c_tuple(Y) of
+ true ->
+ %% Here, unless `Z' is a simple expression, we must bind it
+ %% to a new variable, because in that case, `Z' must be
+ %% evaluated before any part of `Y'.
+ T = list_to_tuple(tuple_es(Y)),
+ N = int_val(X),
+ if integer(N), N > 0, N =< size(T) ->
+ E = element(N, T),
+ case is_simple(Z) of
+ true ->
+ Es = tuple_to_list(setelement(N, T, Z)),
+ {true, make_seq(E, c_tuple(Es))};
+ false ->
+ V = new_var(Env),
+ Es = tuple_to_list(setelement(N, T, V)),
+ E1 = make_seq(E, c_tuple(Es)),
+ {true, c_let([V], Z, E1)}
+ end;
+ true ->
+ false
+ end;
+ false ->
+ false
+ end;
+reduce_bif_call_1(erlang, size, 1, [X], _Env) ->
+ case is_c_tuple(X) of
+ true ->
+ %% Just evaluate the tuple for effect and use the size (the
+ %% arity) as the result.
+ {true, make_seq(X, c_int(tuple_arity(X)))};
+ false ->
+ false
+ end;
+reduce_bif_call_1(erlang, tl, 1, [X], _Env) ->
+ case is_c_cons(X) of
+ true ->
+ %% Cf. `element/2' above.
+ {true, make_seq(cons_hd(X), cons_tl(X))};
+ false ->
+ false
+ end;
+reduce_bif_call_1(erlang, tuple_to_list, 1, [X], _Env) ->
+ case is_c_tuple(X) of
+ true ->
+ %% This actually introduces slightly stronger constraints on
+ %% the evaluation order of the subexpressions.
+ {true, make_list(tuple_es(X))};
+ false ->
+ false
+ end;
+reduce_bif_call_1(_M, _F, _A, _As, _Env) ->
+ false.
+
+effort_is_active(S) ->
+ counter__is_active(st__get_effort(S)).
+
+size_is_active(S) ->
+ counter__is_active(st__get_size(S)).
+
+get_effort_limit(S) ->
+ counter__limit(st__get_effort(S)).
+
+new_active_effort(Limit, S) ->
+ st__set_effort(counter__new_active(Limit), S).
+
+revert_effort(S1, S2) ->
+ st__set_effort(st__get_effort(S1), S2).
+
+new_active_size(Limit, S) ->
+ st__set_size(counter__new_active(Limit), S).
+
+new_passive_size(Limit, S) ->
+ st__set_size(counter__new_passive(Limit), S).
+
+revert_size(S1, S2) ->
+ st__set_size(st__get_size(S1), S2).
+
+count_effort(N, S) ->
+ C = st__get_effort(S),
+ C1 = counter__add(N, C, effort, S),
+ case debug_counters() of
+ true ->
+ case counter__is_active(C1) of
+ true ->
+ V = counter__value(C1),
+ case V > get(counter_effort_max) of
+ true ->
+ put(counter_effort_max, V);
+ false ->
+ ok
+ end;
+ false ->
+ ok
+ end;
+ _ ->
+ ok
+ end,
+ st__set_effort(C1, S).
+
+count_size(N, S) ->
+ C = st__get_size(S),
+ C1 = counter__add(N, C, size, S),
+ case debug_counters() of
+ true ->
+ case counter__is_active(C1) of
+ true ->
+ V = counter__value(C1),
+ case V > get(counter_size_max) of
+ true ->
+ put(counter_size_max, V);
+ false ->
+ ok
+ end;
+ false ->
+ ok
+ end;
+ _ ->
+ ok
+ end,
+ st__set_size(C1, S).
+
+get_size_value(S) ->
+ counter__value(st__get_size(S)).
+
+get_size_limit(S) ->
+ counter__limit(st__get_size(S)).
+
+kill_id_anns([{'id',_} | As]) ->
+ kill_id_anns(As);
+kill_id_anns([A | As]) ->
+ [A | kill_id_anns(As)];
+kill_id_anns([]) ->
+ [].
+
+
+%% =====================================================================
+%% General utilities
+
+max(X, Y) when X > Y -> X;
+max(_, Y) -> Y.
+
+%% The atom `ok', is widely used in Erlang for "void" values.
+
+void() -> abstract(ok).
+
+is_simple(E) ->
+ case type(E) of
+ literal -> true;
+ var -> true;
+ 'fun' -> true;
+ _ -> false
+ end.
+
+get_components(N, E) ->
+ case type(E) of
+ values ->
+ Es = values_es(E),
+ if length(Es) == N ->
+ {true, Es};
+ true ->
+ false
+ end;
+ _ when N == 1 ->
+ {true, [E]};
+ _ ->
+ false
+ end.
+
+all_static([E | Es]) ->
+ case is_literal(result(E)) of
+ true ->
+ all_static(Es);
+ false ->
+ false
+ end;
+all_static([]) ->
+ true.
+
+set_clause_bodies([C | Cs], B) ->
+ [update_c_clause(C, clause_pats(C), clause_guard(C), B)
+ | set_clause_bodies(Cs, B)];
+set_clause_bodies([], _) ->
+ [].
+
+filename([C | T]) when integer(C), C > 0, C =< 255 ->
+ [C | filename(T)];
+filename([H|T]) ->
+ filename(H) ++ filename(T);
+filename([]) ->
+ [];
+filename(N) when atom(N) ->
+ atom_to_list(N);
+filename(N) ->
+ report_error("bad filename: `~P'.", [N, 25]),
+ exit(error).
+
+
+%% =====================================================================
+%% Abstract datatype: renaming()
+
+ren__identity() ->
+ dict:new().
+
+ren__add(X, Y, Ren) ->
+ dict:store(X, Y, Ren).
+
+ren__map(X, Ren) ->
+ case dict:find(X, Ren) of
+ {ok, Y} ->
+ Y;
+ error ->
+ X
+ end.
+
+ren__add_identity(X, Ren) ->
+ dict:erase(X, Ren).
+
+
+%% =====================================================================
+%% Abstract datatype: environment()
+
+env__empty() ->
+ rec_env:empty().
+
+env__bind(Key, Val, Env) ->
+ rec_env:bind(Key, Val, Env).
+
+%% `Es' should have type `[{Key, Val}]', and `Fun' should have type
+%% `(Val, Env) -> T', mapping a value together with the recursive
+%% environment itself to some term `T' to be returned when the entry is
+%% looked up.
+
+env__bind_recursive(Ks, Vs, F, Env) ->
+ rec_env:bind_recursive(Ks, Vs, F, Env).
+
+env__lookup(Key, Env) ->
+ rec_env:lookup(Key, Env).
+
+env__get(Key, Env) ->
+ rec_env:get(Key, Env).
+
+env__is_defined(Key, Env) ->
+ rec_env:is_defined(Key, Env).
+
+env__new_vname(Env) ->
+ rec_env:new_key(Env).
+
+env__new_fname(A, N, Env) ->
+ rec_env:new_key(fun (X) ->
+ S = integer_to_list(X),
+ {list_to_atom(atom_to_list(A) ++ "_" ++ S),
+ N}
+ end, Env).
+
+
+%% =====================================================================
+%% Abstract datatype: state()
+
+-record(state, {free, % next free location
+ size, % size counter
+ effort, % effort counter
+ cache, % operand expression cache
+ var_flags, % flags for variables (#ref-structures)
+ opnd_flags, % flags for operands
+ app_flags}). % flags for #app-structures
+
+%% Note that we do not have a `var_assigned' flag, since there is no
+%% destructive assignment in Erlang. In the original algorithm, the
+%% "residual-referenced"-flags of the previous inlining pass (or
+%% initialization pass) are used as the "source-referenced"-flags for
+%% the subsequent pass. The latter may then be used as a safe
+%% approximation whenever we need to base a decision on whether or not a
+%% particular variable or function variable could be referenced in the
+%% program being generated, and computation of the new
+%% "residual-referenced" flag for that variable is not yet finished. In
+%% the present algorithm, this can only happen in the presence of
+%% variable assignments, which do not exist in Erlang. Therefore, we do
+%% not keep "source-referenced" flags for residual-code references in
+%% our implementation.
+%%
+%% The "inner-pending" flag tells us whether we are already in the
+%% process of visiting a particular operand, and the "outer-pending"
+%% flag whether we are in the process of inlining a propagated
+%% functional value. The "pending flags" are really counters limiting
+%% the number of times an operand may be inlined recursively, causing
+%% loop unrolling; however, unrolling more than one iteration does not
+%% work offhand in the present implementation. (TODO: find out why.)
+%% Note that the initial value must be greater than zero in order for
+%% any inlining at all to be done.
+
+%% Flags are stored in ETS-tables, one table for each class. The second
+%% element in each stored tuple is the key (the "label").
+
+-record(var_flags, {lab, referenced = false}).
+-record(opnd_flags, {lab, inner_pending = 1, outer_pending = 1,
+ effect = false}).
+-record(app_flags, {lab, inlined = false}).
+
+st__new(Effort, Size) ->
+ #state{free = 0,
+ size = counter__new_passive(Size),
+ effort = counter__new_passive(Effort),
+ cache = dict:new(),
+ var_flags = ets:new(var, [set, private, {keypos, 2}]),
+ opnd_flags = ets:new(opnd, [set, private, {keypos, 2}]),
+ app_flags = ets:new(app, [set, private, {keypos, 2}])}.
+
+st__new_loc(S) ->
+ N = S#state.free,
+ {N, S#state{free = N + 1}}.
+
+st__get_effort(S) ->
+ S#state.effort.
+
+st__set_effort(C, S) ->
+ S#state{effort = C}.
+
+st__get_size(S) ->
+ S#state.size.
+
+st__set_size(C, S) ->
+ S#state{size = C}.
+
+st__set_var_referenced(L, S) ->
+ T = S#state.var_flags,
+ [F] = ets:lookup(T, L),
+ ets:insert(T, F#var_flags{referenced = true}),
+ S.
+
+st__get_var_referenced(L, S) ->
+ ets:lookup_element(S#state.var_flags, L, #var_flags.referenced).
+
+st__lookup_opnd_cache(L, S) ->
+ dict:find(L, S#state.cache).
+
+%% Note that setting the cache should only be done once.
+
+st__set_opnd_cache(L, C, S) ->
+ S#state{cache = dict:store(L, C, S#state.cache)}.
+
+st__set_opnd_effect(L, S) ->
+ T = S#state.opnd_flags,
+ [F] = ets:lookup(T, L),
+ ets:insert(T, F#opnd_flags{effect = true}),
+ S.
+
+st__get_opnd_effect(L, S) ->
+ ets:lookup_element(S#state.opnd_flags, L, #opnd_flags.effect).
+
+st__set_app_inlined(L, S) ->
+ T = S#state.app_flags,
+ [F] = ets:lookup(T, L),
+ ets:insert(T, F#app_flags{inlined = true}),
+ S.
+
+st__clear_app_inlined(L, S) ->
+ T = S#state.app_flags,
+ [F] = ets:lookup(T, L),
+ ets:insert(T, F#app_flags{inlined = false}),
+ S.
+
+st__get_app_inlined(L, S) ->
+ ets:lookup_element(S#state.app_flags, L, #app_flags.inlined).
+
+%% The pending-flags are initialized by `st__new_opnd_loc' below.
+
+st__test_inner_pending(L, S) ->
+ T = S#state.opnd_flags,
+ P = ets:lookup_element(T, L, #opnd_flags.inner_pending),
+ P =< 0.
+
+st__mark_inner_pending(L, S) ->
+ ets:update_counter(S#state.opnd_flags, L,
+ {#opnd_flags.inner_pending, -1}),
+ S.
+
+st__clear_inner_pending(L, S) ->
+ ets:update_counter(S#state.opnd_flags, L,
+ {#opnd_flags.inner_pending, 1}),
+ S.
+
+st__test_outer_pending(L, S) ->
+ T = S#state.opnd_flags,
+ P = ets:lookup_element(T, L, #opnd_flags.outer_pending),
+ P =< 0.
+
+st__mark_outer_pending(L, S) ->
+ ets:update_counter(S#state.opnd_flags, L,
+ {#opnd_flags.outer_pending, -1}),
+ S.
+
+st__clear_outer_pending(L, S) ->
+ ets:update_counter(S#state.opnd_flags, L,
+ {#opnd_flags.outer_pending, 1}),
+ S.
+
+st__new_app_loc(S) ->
+ V = {L, _S1} = st__new_loc(S),
+ ets:insert(S#state.app_flags, #app_flags{lab = L}),
+ V.
+
+st__new_ref_loc(S) ->
+ V = {L, _S1} = st__new_loc(S),
+ ets:insert(S#state.var_flags, #var_flags{lab = L}),
+ V.
+
+st__new_opnd_loc(S) ->
+ V = {L, _S1} = st__new_loc(S),
+ ets:insert(S#state.opnd_flags, #opnd_flags{lab = L}),
+ V.
+
+
+%% =====================================================================
+%% Abstract datatype: counter()
+%%
+%% `counter__add' throws `{counter_exceeded, Type, Data}' if the
+%% resulting counter value would exceed the limit for the counter in
+%% question (`Type' and `Data' are given by the user).
+
+-record(counter, {active, value, limit}).
+
+counter__new_passive(Limit) when Limit > 0 ->
+ {0, Limit}.
+
+counter__new_active(Limit) when Limit > 0 ->
+ {Limit, Limit}.
+
+%% Active counters have values > 0 internally; passive counters start at
+%% zero. The 'limit' field is only accessed by the 'counter__limit'
+%% function.
+
+counter__is_active({C, _}) ->
+ C > 0.
+
+counter__limit({_, L}) ->
+ L.
+
+counter__value({N, L}) ->
+ if N > 0 ->
+ L - N;
+ true ->
+ -N
+ end.
+
+counter__add(N, {V, L}, Type, Data) ->
+ N1 = V - N,
+ if V > 0, N1 =< 0 ->
+ case debug_counters() of
+ true ->
+ case Type of
+ effort ->
+ put(counter_effort_triggers,
+ get(counter_effort_triggers) + 1);
+ size ->
+ put(counter_size_triggers,
+ get(counter_size_triggers) + 1)
+ end;
+ _ ->
+ ok
+ end,
+ throw({counter_exceeded, Type, Data});
+ true ->
+ {N1, L}
+ end.
+
+
+%% =====================================================================
+%% Reporting
+
+% report_internal_error(S) ->
+% report_internal_error(S, []).
+
+report_internal_error(S, Vs) ->
+ report_error("internal error: " ++ S, Vs).
+
+report_error(D) ->
+ report_error(D, []).
+
+report_error({F, L, D}, Vs) ->
+ report({F, L, {error, D}}, Vs);
+report_error(D, Vs) ->
+ report({error, D}, Vs).
+
+report_warning(D) ->
+ report_warning(D, []).
+
+report_warning({F, L, D}, Vs) ->
+ report({F, L, {warning, D}}, Vs);
+report_warning(D, Vs) ->
+ report({warning, D}, Vs).
+
+report(D, Vs) ->
+ io:put_chars(format(D, Vs)).
+
+format({error, D}, Vs) ->
+ ["error: ", format(D, Vs)];
+format({warning, D}, Vs) ->
+ ["warning: ", format(D, Vs)];
+format({"", L, D}, Vs) when integer(L), L > 0 ->
+ [io_lib:fwrite("~w: ", [L]), format(D, Vs)];
+format({"", _L, D}, Vs) ->
+ format(D, Vs);
+format({F, L, D}, Vs) when integer(L), L > 0 ->
+ [io_lib:fwrite("~s:~w: ", [filename(F), L]), format(D, Vs)];
+format({F, _L, D}, Vs) ->
+ [io_lib:fwrite("~s: ", [filename(F)]), format(D, Vs)];
+format(S, Vs) when list(S) ->
+ [io_lib:fwrite(S, Vs), $\n].
+
+
+%% =====================================================================
diff --git a/lib/dialyzer/test/options1_tests_SUITE_data/src/compiler/cerl_trees.erl b/lib/dialyzer/test/options1_tests_SUITE_data/src/compiler/cerl_trees.erl
new file mode 100644
index 0000000000..50384a6ff8
--- /dev/null
+++ b/lib/dialyzer/test/options1_tests_SUITE_data/src/compiler/cerl_trees.erl
@@ -0,0 +1,801 @@
+%% ``The contents of this file are subject to the Erlang Public License,
+%% Version 1.1, (the "License"); you may not use this file except in
+%% compliance with the License. You should have received a copy of the
+%% Erlang Public License along with this software. If not, it can be
+%% retrieved via the world wide web at http://www.erlang.org/.
+%%
+%% Software distributed under the License is distributed on an "AS IS"
+%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
+%% the License for the specific language governing rights and limitations
+%% under the License.
+%%
+%% The Initial Developer of the Original Code is Richard Carlsson.
+%% Copyright (C) 1999-2002 Richard Carlsson.
+%% Portions created by Ericsson are Copyright 2001, Ericsson Utvecklings
+%% AB. All Rights Reserved.''
+%%
+%% $Id: cerl_trees.erl,v 1.2 2010/06/07 06:32:39 kostis Exp $
+
+%% @doc Basic functions on Core Erlang abstract syntax trees.
+%%
+%% <p>Syntax trees are defined in the module <a
+%% href=""><code>cerl</code></a>.</p>
+%%
+%% @type cerl() = cerl:cerl()
+
+-module(cerl_trees).
+
+-export([depth/1, fold/3, free_variables/1, label/1, label/2, map/2,
+ mapfold/3, size/1, variables/1]).
+
+-import(cerl, [alias_pat/1, alias_var/1, ann_c_alias/3, ann_c_apply/3,
+ ann_c_binary/2, ann_c_bitstr/6, ann_c_call/4,
+ ann_c_case/3, ann_c_catch/2, ann_c_clause/4,
+ ann_c_cons_skel/3, ann_c_fun/3, ann_c_let/4,
+ ann_c_letrec/3, ann_c_module/5, ann_c_primop/3,
+ ann_c_receive/4, ann_c_seq/3, ann_c_try/6,
+ ann_c_tuple_skel/2, ann_c_values/2, apply_args/1,
+ apply_op/1, binary_segments/1, bitstr_val/1,
+ bitstr_size/1, bitstr_unit/1, bitstr_type/1,
+ bitstr_flags/1, call_args/1, call_module/1, call_name/1,
+ case_arg/1, case_clauses/1, catch_body/1, clause_body/1,
+ clause_guard/1, clause_pats/1, clause_vars/1, concrete/1,
+ cons_hd/1, cons_tl/1, fun_body/1, fun_vars/1, get_ann/1,
+ let_arg/1, let_body/1, let_vars/1, letrec_body/1,
+ letrec_defs/1, letrec_vars/1, module_attrs/1,
+ module_defs/1, module_exports/1, module_name/1,
+ module_vars/1, primop_args/1, primop_name/1,
+ receive_action/1, receive_clauses/1, receive_timeout/1,
+ seq_arg/1, seq_body/1, set_ann/2, subtrees/1, try_arg/1,
+ try_body/1, try_vars/1, try_evars/1, try_handler/1,
+ tuple_es/1, type/1, update_c_alias/3, update_c_apply/3,
+ update_c_binary/2, update_c_bitstr/6, update_c_call/4,
+ update_c_case/3, update_c_catch/2, update_c_clause/4,
+ update_c_cons/3, update_c_cons_skel/3, update_c_fun/3,
+ update_c_let/4, update_c_letrec/3, update_c_module/5,
+ update_c_primop/3, update_c_receive/4, update_c_seq/3,
+ update_c_try/6, update_c_tuple/2, update_c_tuple_skel/2,
+ update_c_values/2, values_es/1, var_name/1]).
+
+
+%% ---------------------------------------------------------------------
+
+%% @spec depth(Tree::cerl) -> integer()
+%%
+%% @doc Returns the length of the longest path in the tree. A leaf
+%% node has depth zero, the tree representing "<code>{foo,
+%% bar}</code>" has depth one, etc.
+
+depth(T) ->
+ case subtrees(T) of
+ [] ->
+ 0;
+ Gs ->
+ 1 + lists:foldl(fun (G, A) -> erlang:max(depth_1(G), A) end, 0, Gs)
+ end.
+
+depth_1(Ts) ->
+ lists:foldl(fun (T, A) -> erlang:max(depth(T), A) end, 0, Ts).
+
+%% max(X, Y) when X > Y -> X;
+%% max(_, Y) -> Y.
+
+
+%% @spec size(Tree::cerl()) -> integer()
+%%
+%% @doc Returns the number of nodes in <code>Tree</code>.
+
+size(T) ->
+ fold(fun (_, S) -> S + 1 end, 0, T).
+
+
+%% ---------------------------------------------------------------------
+
+%% @spec map(Function, Tree::cerl()) -> cerl()
+%%
+%% Function = (cerl()) -> cerl()
+%%
+%% @doc Maps a function onto the nodes of a tree. This replaces each
+%% node in the tree by the result of applying the given function on
+%% the original node, bottom-up.
+%%
+%% @see mapfold/3
+
+map(F, T) ->
+ F(map_1(F, T)).
+
+map_1(F, T) ->
+ case type(T) of
+ literal ->
+ case concrete(T) of
+ [_ | _] ->
+ update_c_cons(T, map(F, cons_hd(T)),
+ map(F, cons_tl(T)));
+ V when tuple_size(V) > 0 ->
+ update_c_tuple(T, map_list(F, tuple_es(T)));
+ _ ->
+ T
+ end;
+ var ->
+ T;
+ values ->
+ update_c_values(T, map_list(F, values_es(T)));
+ cons ->
+ update_c_cons_skel(T, map(F, cons_hd(T)),
+ map(F, cons_tl(T)));
+ tuple ->
+ update_c_tuple_skel(T, map_list(F, tuple_es(T)));
+ 'let' ->
+ update_c_let(T, map_list(F, let_vars(T)),
+ map(F, let_arg(T)),
+ map(F, let_body(T)));
+ seq ->
+ update_c_seq(T, map(F, seq_arg(T)),
+ map(F, seq_body(T)));
+ apply ->
+ update_c_apply(T, map(F, apply_op(T)),
+ map_list(F, apply_args(T)));
+ call ->
+ update_c_call(T, map(F, call_module(T)),
+ map(F, call_name(T)),
+ map_list(F, call_args(T)));
+ primop ->
+ update_c_primop(T, map(F, primop_name(T)),
+ map_list(F, primop_args(T)));
+ 'case' ->
+ update_c_case(T, map(F, case_arg(T)),
+ map_list(F, case_clauses(T)));
+ clause ->
+ update_c_clause(T, map_list(F, clause_pats(T)),
+ map(F, clause_guard(T)),
+ map(F, clause_body(T)));
+ alias ->
+ update_c_alias(T, map(F, alias_var(T)),
+ map(F, alias_pat(T)));
+ 'fun' ->
+ update_c_fun(T, map_list(F, fun_vars(T)),
+ map(F, fun_body(T)));
+ 'receive' ->
+ update_c_receive(T, map_list(F, receive_clauses(T)),
+ map(F, receive_timeout(T)),
+ map(F, receive_action(T)));
+ 'try' ->
+ update_c_try(T, map(F, try_arg(T)),
+ map_list(F, try_vars(T)),
+ map(F, try_body(T)),
+ map_list(F, try_evars(T)),
+ map(F, try_handler(T)));
+ 'catch' ->
+ update_c_catch(T, map(F, catch_body(T)));
+ binary ->
+ update_c_binary(T, map_list(F, binary_segments(T)));
+ bitstr ->
+ update_c_bitstr(T, map(F, bitstr_val(T)),
+ map(F, bitstr_size(T)),
+ map(F, bitstr_unit(T)),
+ map(F, bitstr_type(T)),
+ map(F, bitstr_flags(T)));
+ letrec ->
+ update_c_letrec(T, map_pairs(F, letrec_defs(T)),
+ map(F, letrec_body(T)));
+ module ->
+ update_c_module(T, map(F, module_name(T)),
+ map_list(F, module_exports(T)),
+ map_pairs(F, module_attrs(T)),
+ map_pairs(F, module_defs(T)))
+ end.
+
+map_list(F, [T | Ts]) ->
+ [map(F, T) | map_list(F, Ts)];
+map_list(_, []) ->
+ [].
+
+map_pairs(F, [{T1, T2} | Ps]) ->
+ [{map(F, T1), map(F, T2)} | map_pairs(F, Ps)];
+map_pairs(_, []) ->
+ [].
+
+
+%% @spec fold(Function, Unit::term(), Tree::cerl()) -> term()
+%%
+%% Function = (cerl(), term()) -> term()
+%%
+%% @doc Does a fold operation over the nodes of the tree. The result
+%% is the value of <code>Function(X1, Function(X2, ... Function(Xn,
+%% Unit) ... ))</code>, where <code>X1, ..., Xn</code> are the nodes
+%% of <code>Tree</code> in a post-order traversal.
+%%
+%% @see mapfold/3
+
+fold(F, S, T) ->
+ F(T, fold_1(F, S, T)).
+
+fold_1(F, S, T) ->
+ case type(T) of
+ literal ->
+ case concrete(T) of
+ [_ | _] ->
+ fold(F, fold(F, S, cons_hd(T)), cons_tl(T));
+ V when tuple_size(V) > 0 ->
+ fold_list(F, S, tuple_es(T));
+ _ ->
+ S
+ end;
+ var ->
+ S;
+ values ->
+ fold_list(F, S, values_es(T));
+ cons ->
+ fold(F, fold(F, S, cons_hd(T)), cons_tl(T));
+ tuple ->
+ fold_list(F, S, tuple_es(T));
+ 'let' ->
+ fold(F, fold(F, fold_list(F, S, let_vars(T)),
+ let_arg(T)),
+ let_body(T));
+ seq ->
+ fold(F, fold(F, S, seq_arg(T)), seq_body(T));
+ apply ->
+ fold_list(F, fold(F, S, apply_op(T)), apply_args(T));
+ call ->
+ fold_list(F, fold(F, fold(F, S, call_module(T)),
+ call_name(T)),
+ call_args(T));
+ primop ->
+ fold_list(F, fold(F, S, primop_name(T)), primop_args(T));
+ 'case' ->
+ fold_list(F, fold(F, S, case_arg(T)), case_clauses(T));
+ clause ->
+ fold(F, fold(F, fold_list(F, S, clause_pats(T)),
+ clause_guard(T)),
+ clause_body(T));
+ alias ->
+ fold(F, fold(F, S, alias_var(T)), alias_pat(T));
+ 'fun' ->
+ fold(F, fold_list(F, S, fun_vars(T)), fun_body(T));
+ 'receive' ->
+ fold(F, fold(F, fold_list(F, S, receive_clauses(T)),
+ receive_timeout(T)),
+ receive_action(T));
+ 'try' ->
+ fold(F, fold_list(F, fold(F, fold_list(F, fold(F, S, try_arg(T)),
+ try_vars(T)),
+ try_body(T)),
+ try_evars(T)),
+ try_handler(T));
+ 'catch' ->
+ fold(F, S, catch_body(T));
+ binary ->
+ fold_list(F, S, binary_segments(T));
+ bitstr ->
+ fold(F,
+ fold(F,
+ fold(F,
+ fold(F,
+ fold(F, S, bitstr_val(T)),
+ bitstr_size(T)),
+ bitstr_unit(T)),
+ bitstr_type(T)),
+ bitstr_flags(T));
+ letrec ->
+ fold(F, fold_pairs(F, S, letrec_defs(T)), letrec_body(T));
+ module ->
+ fold_pairs(F,
+ fold_pairs(F,
+ fold_list(F,
+ fold(F, S, module_name(T)),
+ module_exports(T)),
+ module_attrs(T)),
+ module_defs(T))
+ end.
+
+fold_list(F, S, [T | Ts]) ->
+ fold_list(F, fold(F, S, T), Ts);
+fold_list(_, S, []) ->
+ S.
+
+fold_pairs(F, S, [{T1, T2} | Ps]) ->
+ fold_pairs(F, fold(F, fold(F, S, T1), T2), Ps);
+fold_pairs(_, S, []) ->
+ S.
+
+
+%% @spec mapfold(Function, Initial::term(), Tree::cerl()) ->
+%% {cerl(), term()}
+%%
+%% Function = (cerl(), term()) -> {cerl(), term()}
+%%
+%% @doc Does a combined map/fold operation on the nodes of the
+%% tree. This is similar to <code>map/2</code>, but also propagates a
+%% value from each application of <code>Function</code> to the next,
+%% starting with the given value <code>Initial</code>, while doing a
+%% post-order traversal of the tree, much like <code>fold/3</code>.
+%%
+%% @see map/2
+%% @see fold/3
+
+mapfold(F, S0, T) ->
+ case type(T) of
+ literal ->
+ case concrete(T) of
+ [_ | _] ->
+ {T1, S1} = mapfold(F, S0, cons_hd(T)),
+ {T2, S2} = mapfold(F, S1, cons_tl(T)),
+ F(update_c_cons(T, T1, T2), S2);
+ V when tuple_size(V) > 0 ->
+ {Ts, S1} = mapfold_list(F, S0, tuple_es(T)),
+ F(update_c_tuple(T, Ts), S1);
+ _ ->
+ F(T, S0)
+ end;
+ var ->
+ F(T, S0);
+ values ->
+ {Ts, S1} = mapfold_list(F, S0, values_es(T)),
+ F(update_c_values(T, Ts), S1);
+ cons ->
+ {T1, S1} = mapfold(F, S0, cons_hd(T)),
+ {T2, S2} = mapfold(F, S1, cons_tl(T)),
+ F(update_c_cons_skel(T, T1, T2), S2);
+ tuple ->
+ {Ts, S1} = mapfold_list(F, S0, tuple_es(T)),
+ F(update_c_tuple_skel(T, Ts), S1);
+ 'let' ->
+ {Vs, S1} = mapfold_list(F, S0, let_vars(T)),
+ {A, S2} = mapfold(F, S1, let_arg(T)),
+ {B, S3} = mapfold(F, S2, let_body(T)),
+ F(update_c_let(T, Vs, A, B), S3);
+ seq ->
+ {A, S1} = mapfold(F, S0, seq_arg(T)),
+ {B, S2} = mapfold(F, S1, seq_body(T)),
+ F(update_c_seq(T, A, B), S2);
+ apply ->
+ {E, S1} = mapfold(F, S0, apply_op(T)),
+ {As, S2} = mapfold_list(F, S1, apply_args(T)),
+ F(update_c_apply(T, E, As), S2);
+ call ->
+ {M, S1} = mapfold(F, S0, call_module(T)),
+ {N, S2} = mapfold(F, S1, call_name(T)),
+ {As, S3} = mapfold_list(F, S2, call_args(T)),
+ F(update_c_call(T, M, N, As), S3);
+ primop ->
+ {N, S1} = mapfold(F, S0, primop_name(T)),
+ {As, S2} = mapfold_list(F, S1, primop_args(T)),
+ F(update_c_primop(T, N, As), S2);
+ 'case' ->
+ {A, S1} = mapfold(F, S0, case_arg(T)),
+ {Cs, S2} = mapfold_list(F, S1, case_clauses(T)),
+ F(update_c_case(T, A, Cs), S2);
+ clause ->
+ {Ps, S1} = mapfold_list(F, S0, clause_pats(T)),
+ {G, S2} = mapfold(F, S1, clause_guard(T)),
+ {B, S3} = mapfold(F, S2, clause_body(T)),
+ F(update_c_clause(T, Ps, G, B), S3);
+ alias ->
+ {V, S1} = mapfold(F, S0, alias_var(T)),
+ {P, S2} = mapfold(F, S1, alias_pat(T)),
+ F(update_c_alias(T, V, P), S2);
+ 'fun' ->
+ {Vs, S1} = mapfold_list(F, S0, fun_vars(T)),
+ {B, S2} = mapfold(F, S1, fun_body(T)),
+ F(update_c_fun(T, Vs, B), S2);
+ 'receive' ->
+ {Cs, S1} = mapfold_list(F, S0, receive_clauses(T)),
+ {E, S2} = mapfold(F, S1, receive_timeout(T)),
+ {A, S3} = mapfold(F, S2, receive_action(T)),
+ F(update_c_receive(T, Cs, E, A), S3);
+ 'try' ->
+ {E, S1} = mapfold(F, S0, try_arg(T)),
+ {Vs, S2} = mapfold_list(F, S1, try_vars(T)),
+ {B, S3} = mapfold(F, S2, try_body(T)),
+ {Evs, S4} = mapfold_list(F, S3, try_evars(T)),
+ {H, S5} = mapfold(F, S4, try_handler(T)),
+ F(update_c_try(T, E, Vs, B, Evs, H), S5);
+ 'catch' ->
+ {B, S1} = mapfold(F, S0, catch_body(T)),
+ F(update_c_catch(T, B), S1);
+ binary ->
+ {Ds, S1} = mapfold_list(F, S0, binary_segments(T)),
+ F(update_c_binary(T, Ds), S1);
+ bitstr ->
+ {Val, S1} = mapfold(F, S0, bitstr_val(T)),
+ {Size, S2} = mapfold(F, S1, bitstr_size(T)),
+ {Unit, S3} = mapfold(F, S2, bitstr_unit(T)),
+ {Type, S4} = mapfold(F, S3, bitstr_type(T)),
+ {Flags, S5} = mapfold(F, S4, bitstr_flags(T)),
+ F(update_c_bitstr(T, Val, Size, Unit, Type, Flags), S5);
+ letrec ->
+ {Ds, S1} = mapfold_pairs(F, S0, letrec_defs(T)),
+ {B, S2} = mapfold(F, S1, letrec_body(T)),
+ F(update_c_letrec(T, Ds, B), S2);
+ module ->
+ {N, S1} = mapfold(F, S0, module_name(T)),
+ {Es, S2} = mapfold_list(F, S1, module_exports(T)),
+ {As, S3} = mapfold_pairs(F, S2, module_attrs(T)),
+ {Ds, S4} = mapfold_pairs(F, S3, module_defs(T)),
+ F(update_c_module(T, N, Es, As, Ds), S4)
+ end.
+
+mapfold_list(F, S0, [T | Ts]) ->
+ {T1, S1} = mapfold(F, S0, T),
+ {Ts1, S2} = mapfold_list(F, S1, Ts),
+ {[T1 | Ts1], S2};
+mapfold_list(_, S, []) ->
+ {[], S}.
+
+mapfold_pairs(F, S0, [{T1, T2} | Ps]) ->
+ {T3, S1} = mapfold(F, S0, T1),
+ {T4, S2} = mapfold(F, S1, T2),
+ {Ps1, S3} = mapfold_pairs(F, S2, Ps),
+ {[{T3, T4} | Ps1], S3};
+mapfold_pairs(_, S, []) ->
+ {[], S}.
+
+
+%% ---------------------------------------------------------------------
+
+%% @spec variables(Tree::cerl()) -> [var_name()]
+%%
+%% var_name() = integer() | atom() | {atom(), integer()}
+%%
+%% @doc Returns an ordered-set list of the names of all variables in
+%% the syntax tree. (This includes function name variables.) An
+%% exception is thrown if <code>Tree</code> does not represent a
+%% well-formed Core Erlang syntax tree.
+%%
+%% @see free_variables/1
+
+variables(T) ->
+ variables(T, false).
+
+
+%% @spec free_variables(Tree::cerl()) -> [var_name()]
+%%
+%% @doc Like <code>variables/1</code>, but only includes variables
+%% that are free in the tree.
+%%
+%% @see variables/1
+
+free_variables(T) ->
+ variables(T, true).
+
+
+%% This is not exported
+
+variables(T, S) ->
+ case type(T) of
+ literal ->
+ [];
+ var ->
+ [var_name(T)];
+ values ->
+ vars_in_list(values_es(T), S);
+ cons ->
+ ordsets:union(variables(cons_hd(T), S),
+ variables(cons_tl(T), S));
+ tuple ->
+ vars_in_list(tuple_es(T), S);
+ 'let' ->
+ Vs = variables(let_body(T), S),
+ Vs1 = var_list_names(let_vars(T)),
+ Vs2 = case S of
+ true ->
+ ordsets:subtract(Vs, Vs1);
+ false ->
+ ordsets:union(Vs, Vs1)
+ end,
+ ordsets:union(variables(let_arg(T), S), Vs2);
+ seq ->
+ ordsets:union(variables(seq_arg(T), S),
+ variables(seq_body(T), S));
+ apply ->
+ ordsets:union(
+ variables(apply_op(T), S),
+ vars_in_list(apply_args(T), S));
+ call ->
+ ordsets:union(variables(call_module(T), S),
+ ordsets:union(
+ variables(call_name(T), S),
+ vars_in_list(call_args(T), S)));
+ primop ->
+ vars_in_list(primop_args(T), S);
+ 'case' ->
+ ordsets:union(variables(case_arg(T), S),
+ vars_in_list(case_clauses(T), S));
+ clause ->
+ Vs = ordsets:union(variables(clause_guard(T), S),
+ variables(clause_body(T), S)),
+ Vs1 = vars_in_list(clause_pats(T), S),
+ case S of
+ true ->
+ ordsets:subtract(Vs, Vs1);
+ false ->
+ ordsets:union(Vs, Vs1)
+ end;
+ alias ->
+ ordsets:add_element(var_name(alias_var(T)),
+ variables(alias_pat(T)));
+ 'fun' ->
+ Vs = variables(fun_body(T), S),
+ Vs1 = var_list_names(fun_vars(T)),
+ case S of
+ true ->
+ ordsets:subtract(Vs, Vs1);
+ false ->
+ ordsets:union(Vs, Vs1)
+ end;
+ 'receive' ->
+ ordsets:union(
+ vars_in_list(receive_clauses(T), S),
+ ordsets:union(variables(receive_timeout(T), S),
+ variables(receive_action(T), S)));
+ 'try' ->
+ Vs = variables(try_body(T), S),
+ Vs1 = var_list_names(try_vars(T)),
+ Vs2 = case S of
+ true ->
+ ordsets:subtract(Vs, Vs1);
+ false ->
+ ordsets:union(Vs, Vs1)
+ end,
+ Vs3 = variables(try_handler(T), S),
+ Vs4 = var_list_names(try_evars(T)),
+ Vs5 = case S of
+ true ->
+ ordsets:subtract(Vs3, Vs4);
+ false ->
+ ordsets:union(Vs3, Vs4)
+ end,
+ ordsets:union(variables(try_arg(T), S),
+ ordsets:union(Vs2, Vs5));
+ 'catch' ->
+ variables(catch_body(T), S);
+ binary ->
+ vars_in_list(binary_segments(T), S);
+ bitstr ->
+ ordsets:union(variables(bitstr_val(T), S),
+ variables(bitstr_size(T), S));
+ letrec ->
+ Vs = vars_in_defs(letrec_defs(T), S),
+ Vs1 = ordsets:union(variables(letrec_body(T), S), Vs),
+ Vs2 = var_list_names(letrec_vars(T)),
+ case S of
+ true ->
+ ordsets:subtract(Vs1, Vs2);
+ false ->
+ ordsets:union(Vs1, Vs2)
+ end;
+ module ->
+ Vs = vars_in_defs(module_defs(T), S),
+ Vs1 = ordsets:union(vars_in_list(module_exports(T), S), Vs),
+ Vs2 = var_list_names(module_vars(T)),
+ case S of
+ true ->
+ ordsets:subtract(Vs1, Vs2);
+ false ->
+ ordsets:union(Vs1, Vs2)
+ end
+ end.
+
+vars_in_list(Ts, S) ->
+ vars_in_list(Ts, S, []).
+
+vars_in_list([T | Ts], S, A) ->
+ vars_in_list(Ts, S, ordsets:union(variables(T, S), A));
+vars_in_list([], _, A) ->
+ A.
+
+%% Note that this function only visits the right-hand side of function
+%% definitions.
+
+vars_in_defs(Ds, S) ->
+ vars_in_defs(Ds, S, []).
+
+vars_in_defs([{_, F} | Ds], S, A) ->
+ vars_in_defs(Ds, S, ordsets:union(variables(F, S), A));
+vars_in_defs([], _, A) ->
+ A.
+
+%% This amounts to insertion sort. Since the lists are generally short,
+%% it is hardly worthwhile to use an asymptotically better sort.
+
+var_list_names(Vs) ->
+ var_list_names(Vs, []).
+
+var_list_names([V | Vs], A) ->
+ var_list_names(Vs, ordsets:add_element(var_name(V), A));
+var_list_names([], A) ->
+ A.
+
+
+%% ---------------------------------------------------------------------
+
+%% label(Tree::cerl()) -> {cerl(), integer()}
+%%
+%% @equiv label(Tree, 0)
+
+label(T) ->
+ label(T, 0).
+
+%% @spec label(Tree::cerl(), N::integer()) -> {cerl(), integer()}
+%%
+%% @doc Labels each expression in the tree. A term <code>{label,
+%% L}</code> is prefixed to the annotation list of each expression node,
+%% where L is a unique number for every node, except for variables (and
+%% function name variables) which get the same label if they represent
+%% the same variable. Constant literal nodes are not labeled.
+%%
+%% <p>The returned value is a tuple <code>{NewTree, Max}</code>, where
+%% <code>NewTree</code> is the labeled tree and <code>Max</code> is 1
+%% plus the largest label value used. All previous annotation terms on
+%% the form <code>{label, X}</code> are deleted.</p>
+%%
+%% <p>The values of L used in the tree is a dense range from
+%% <code>N</code> to <code>Max - 1</code>, where <code>N =&lt; Max
+%% =&lt; N + size(Tree)</code>. Note that it is possible that no
+%% labels are used at all, i.e., <code>N = Max</code>.</p>
+%%
+%% <p>Note: All instances of free variables will be given distinct
+%% labels.</p>
+%%
+%% @see label/1
+%% @see size/1
+
+label(T, N) ->
+ label(T, N, dict:new()).
+
+label(T, N, Env) ->
+ case type(T) of
+ literal ->
+ %% Constant literals are not labeled.
+ {T, N};
+ var ->
+ case dict:find(var_name(T), Env) of
+ {ok, L} ->
+ {As, _} = label_ann(T, L),
+ N1 = N;
+ error ->
+ {As, N1} = label_ann(T, N)
+ end,
+ {set_ann(T, As), N1};
+ values ->
+ {Ts, N1} = label_list(values_es(T), N, Env),
+ {As, N2} = label_ann(T, N1),
+ {ann_c_values(As, Ts), N2};
+ cons ->
+ {T1, N1} = label(cons_hd(T), N, Env),
+ {T2, N2} = label(cons_tl(T), N1, Env),
+ {As, N3} = label_ann(T, N2),
+ {ann_c_cons_skel(As, T1, T2), N3};
+ tuple ->
+ {Ts, N1} = label_list(tuple_es(T), N, Env),
+ {As, N2} = label_ann(T, N1),
+ {ann_c_tuple_skel(As, Ts), N2};
+ 'let' ->
+ {A, N1} = label(let_arg(T), N, Env),
+ {Vs, N2, Env1} = label_vars(let_vars(T), N1, Env),
+ {B, N3} = label(let_body(T), N2, Env1),
+ {As, N4} = label_ann(T, N3),
+ {ann_c_let(As, Vs, A, B), N4};
+ seq ->
+ {A, N1} = label(seq_arg(T), N, Env),
+ {B, N2} = label(seq_body(T), N1, Env),
+ {As, N3} = label_ann(T, N2),
+ {ann_c_seq(As, A, B), N3};
+ apply ->
+ {E, N1} = label(apply_op(T), N, Env),
+ {Es, N2} = label_list(apply_args(T), N1, Env),
+ {As, N3} = label_ann(T, N2),
+ {ann_c_apply(As, E, Es), N3};
+ call ->
+ {M, N1} = label(call_module(T), N, Env),
+ {F, N2} = label(call_name(T), N1, Env),
+ {Es, N3} = label_list(call_args(T), N2, Env),
+ {As, N4} = label_ann(T, N3),
+ {ann_c_call(As, M, F, Es), N4};
+ primop ->
+ {F, N1} = label(primop_name(T), N, Env),
+ {Es, N2} = label_list(primop_args(T), N1, Env),
+ {As, N3} = label_ann(T, N2),
+ {ann_c_primop(As, F, Es), N3};
+ 'case' ->
+ {A, N1} = label(case_arg(T), N, Env),
+ {Cs, N2} = label_list(case_clauses(T), N1, Env),
+ {As, N3} = label_ann(T, N2),
+ {ann_c_case(As, A, Cs), N3};
+ clause ->
+ {_, N1, Env1} = label_vars(clause_vars(T), N, Env),
+ {Ps, N2} = label_list(clause_pats(T), N1, Env1),
+ {G, N3} = label(clause_guard(T), N2, Env1),
+ {B, N4} = label(clause_body(T), N3, Env1),
+ {As, N5} = label_ann(T, N4),
+ {ann_c_clause(As, Ps, G, B), N5};
+ alias ->
+ {V, N1} = label(alias_var(T), N, Env),
+ {P, N2} = label(alias_pat(T), N1, Env),
+ {As, N3} = label_ann(T, N2),
+ {ann_c_alias(As, V, P), N3};
+ 'fun' ->
+ {Vs, N1, Env1} = label_vars(fun_vars(T), N, Env),
+ {B, N2} = label(fun_body(T), N1, Env1),
+ {As, N3} = label_ann(T, N2),
+ {ann_c_fun(As, Vs, B), N3};
+ 'receive' ->
+ {Cs, N1} = label_list(receive_clauses(T), N, Env),
+ {E, N2} = label(receive_timeout(T), N1, Env),
+ {A, N3} = label(receive_action(T), N2, Env),
+ {As, N4} = label_ann(T, N3),
+ {ann_c_receive(As, Cs, E, A), N4};
+ 'try' ->
+ {E, N1} = label(try_arg(T), N, Env),
+ {Vs, N2, Env1} = label_vars(try_vars(T), N1, Env),
+ {B, N3} = label(try_body(T), N2, Env1),
+ {Evs, N4, Env2} = label_vars(try_evars(T), N3, Env),
+ {H, N5} = label(try_handler(T), N4, Env2),
+ {As, N6} = label_ann(T, N5),
+ {ann_c_try(As, E, Vs, B, Evs, H), N6};
+ 'catch' ->
+ {B, N1} = label(catch_body(T), N, Env),
+ {As, N2} = label_ann(T, N1),
+ {ann_c_catch(As, B), N2};
+ binary ->
+ {Ds, N1} = label_list(binary_segments(T), N, Env),
+ {As, N2} = label_ann(T, N1),
+ {ann_c_binary(As, Ds), N2};
+ bitstr ->
+ {Val, N1} = label(bitstr_val(T), N, Env),
+ {Size, N2} = label(bitstr_size(T), N1, Env),
+ {Unit, N3} = label(bitstr_unit(T), N2, Env),
+ {Type, N4} = label(bitstr_type(T), N3, Env),
+ {Flags, N5} = label(bitstr_flags(T), N4, Env),
+ {As, N6} = label_ann(T, N5),
+ {ann_c_bitstr(As, Val, Size, Unit, Type, Flags), N6};
+ letrec ->
+ {_, N1, Env1} = label_vars(letrec_vars(T), N, Env),
+ {Ds, N2} = label_defs(letrec_defs(T), N1, Env1),
+ {B, N3} = label(letrec_body(T), N2, Env1),
+ {As, N4} = label_ann(T, N3),
+ {ann_c_letrec(As, Ds, B), N4};
+ module ->
+ %% The module name is not labeled.
+ {_, N1, Env1} = label_vars(module_vars(T), N, Env),
+ {Ts, N2} = label_defs(module_attrs(T), N1, Env1),
+ {Ds, N3} = label_defs(module_defs(T), N2, Env1),
+ {Es, N4} = label_list(module_exports(T), N3, Env1),
+ {As, N5} = label_ann(T, N4),
+ {ann_c_module(As, module_name(T), Es, Ts, Ds), N5}
+ end.
+
+label_list([T | Ts], N, Env) ->
+ {T1, N1} = label(T, N, Env),
+ {Ts1, N2} = label_list(Ts, N1, Env),
+ {[T1 | Ts1], N2};
+label_list([], N, _Env) ->
+ {[], N}.
+
+label_vars([T | Ts], N, Env) ->
+ Env1 = dict:store(var_name(T), N, Env),
+ {As, N1} = label_ann(T, N),
+ T1 = set_ann(T, As),
+ {Ts1, N2, Env2} = label_vars(Ts, N1, Env1),
+ {[T1 | Ts1], N2, Env2};
+label_vars([], N, Env) ->
+ {[], N, Env}.
+
+label_defs([{F, T} | Ds], N, Env) ->
+ {F1, N1} = label(F, N, Env),
+ {T1, N2} = label(T, N1, Env),
+ {Ds1, N3} = label_defs(Ds, N2, Env),
+ {[{F1, T1} | Ds1], N3};
+label_defs([], N, _Env) ->
+ {[], N}.
+
+label_ann(T, N) ->
+ {[{label, N} | filter_labels(get_ann(T))], N + 1}.
+
+filter_labels([{label, _} | As]) ->
+ filter_labels(As);
+filter_labels([A | As]) ->
+ [A | filter_labels(As)];
+filter_labels([]) ->
+ [].
diff --git a/lib/dialyzer/test/options1_tests_SUITE_data/src/compiler/compile.erl b/lib/dialyzer/test/options1_tests_SUITE_data/src/compiler/compile.erl
new file mode 100644
index 0000000000..4542bf9eb9
--- /dev/null
+++ b/lib/dialyzer/test/options1_tests_SUITE_data/src/compiler/compile.erl
@@ -0,0 +1,1109 @@
+%% ``The contents of this file are subject to the Erlang Public License,
+%% Version 1.1, (the "License"); you may not use this file except in
+%% compliance with the License. You should have received a copy of the
+%% Erlang Public License along with this software. If not, it can be
+%% retrieved via the world wide web at http://www.erlang.org/.
+%%
+%% Software distributed under the License is distributed on an "AS IS"
+%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
+%% the License for the specific language governing rights and limitations
+%% under the License.
+%%
+%% The Initial Developer of the Original Code is Ericsson Utvecklings AB.
+%% Portions created by Ericsson are Copyright 1999, Ericsson Utvecklings
+%% AB. All Rights Reserved.''
+%%
+%% $Id: compile.erl,v 1.1 2008/12/17 09:53:42 mikpe Exp $
+%%
+%% Purpose: Run the Erlang compiler.
+
+-module(compile).
+-include("erl_compile.hrl").
+-include("core_parse.hrl").
+
+%% High-level interface.
+-export([file/1,file/2,format_error/1,iofile/1]).
+-export([forms/1,forms/2]).
+-export([output_generated/1]).
+-export([options/0]).
+
+%% Erlc interface.
+-export([compile/3,compile_beam/3,compile_asm/3,compile_core/3]).
+
+
+-import(lists, [member/2,reverse/1,keysearch/3,last/1,
+ map/2,flatmap/2,foreach/2,foldr/3,any/2,filter/2]).
+
+%% file(FileName)
+%% file(FileName, Options)
+%% Compile the module in file FileName.
+
+-define(DEFAULT_OPTIONS, [verbose,report_errors,report_warnings]).
+
+-define(pass(P), {P,fun P/1}).
+
+file(File) -> file(File, ?DEFAULT_OPTIONS).
+
+file(File, Opts) when list(Opts) ->
+ do_compile({file,File}, Opts++env_default_opts());
+file(File, Opt) ->
+ file(File, [Opt|?DEFAULT_OPTIONS]).
+
+forms(File) -> forms(File, ?DEFAULT_OPTIONS).
+
+forms(Forms, Opts) when list(Opts) ->
+ do_compile({forms,Forms}, [binary|Opts++env_default_opts()]);
+forms(Forms, Opts) when atom(Opts) ->
+ forms(Forms, [Opts|?DEFAULT_OPTIONS]).
+
+env_default_opts() ->
+ Key = "ERL_COMPILER_OPTIONS",
+ case os:getenv(Key) of
+ false -> [];
+ Str when list(Str) ->
+ case erl_scan:string(Str) of
+ {ok,Tokens,_} ->
+ case erl_parse:parse_term(Tokens ++ [{dot, 1}]) of
+ {ok,List} when list(List) -> List;
+ {ok,Term} -> [Term];
+ {error,_Reason} ->
+ io:format("Ignoring bad term in ~s\n", [Key]),
+ []
+ end;
+ {error, {_,_,_Reason}, _} ->
+ io:format("Ignoring bad term in ~s\n", [Key]),
+ []
+ end
+ end.
+
+do_compile(Input, Opts0) ->
+ Opts = expand_opts(Opts0),
+ Self = self(),
+ Serv = spawn_link(fun() -> internal(Self, Input, Opts) end),
+ receive
+ {Serv,Rep} -> Rep
+ end.
+
+%% Given a list of compilation options, returns true if compile:file/2
+%% would have generated a Beam file, false otherwise (if only a binary or a
+%% listing file would have been generated).
+
+output_generated(Opts) ->
+ any(fun ({save_binary,_F}) -> true;
+ (_Other) -> false
+ end, passes(file, expand_opts(Opts))).
+
+expand_opts(Opts) ->
+ foldr(fun expand_opt/2, [], Opts).
+
+expand_opt(basic_validation, Os) ->
+ [no_code_generation,to_pp,binary|Os];
+expand_opt(strong_validation, Os) ->
+ [no_code_generation,to_kernel,binary|Os];
+expand_opt(report, Os) ->
+ [report_errors,report_warnings|Os];
+expand_opt(return, Os) ->
+ [return_errors,return_warnings|Os];
+expand_opt(r7, Os) ->
+ [no_float_opt,no_new_funs,no_new_binaries,no_new_apply|Os];
+expand_opt(O, Os) -> [O|Os].
+
+filter_opts(Opts0) ->
+ %% Native code generation is not supported if no_new_funs is given.
+ case member(no_new_funs, Opts0) of
+ false -> Opts0;
+ true -> Opts0 -- [native]
+ end.
+
+%% format_error(ErrorDescriptor) -> string()
+
+format_error(no_native_support) ->
+ "this system is not configured for native-code compilation.";
+format_error({native, E}) ->
+ io_lib:fwrite("native-code compilation failed with reason: ~P.",
+ [E, 25]);
+format_error({native_crash, E}) ->
+ io_lib:fwrite("native-code compilation crashed with reason: ~P.",
+ [E, 25]);
+format_error({open,E}) ->
+ io_lib:format("open error '~s'", [file:format_error(E)]);
+format_error({epp,E}) ->
+ epp:format_error(E);
+format_error(write_error) ->
+ "error writing file";
+format_error({rename,S}) ->
+ io_lib:format("error renaming ~s", [S]);
+format_error({parse_transform,M,R}) ->
+ io_lib:format("error in parse transform '~s': ~p", [M, R]);
+format_error({core_transform,M,R}) ->
+ io_lib:format("error in core transform '~s': ~p", [M, R]);
+format_error({crash,Pass,Reason}) ->
+ io_lib:format("internal error in ~p;\ncrash reason: ~p", [Pass,Reason]);
+format_error({bad_return,Pass,Reason}) ->
+ io_lib:format("internal error in ~p;\nbad return value: ~p", [Pass,Reason]).
+
+%% The compile state record.
+-record(compile, {filename="",
+ dir="",
+ base="",
+ ifile="",
+ ofile="",
+ module=[],
+ code=[],
+ core_code=[],
+ abstract_code=[], %Abstract code for debugger.
+ options=[],
+ errors=[],
+ warnings=[]}).
+
+internal(Master, Input, Opts) ->
+ Master ! {self(),
+ case catch internal(Input, Opts) of
+ {'EXIT', Reason} ->
+ {error, Reason};
+ Other ->
+ Other
+ end}.
+
+internal({forms,Forms}, Opts) ->
+ Ps = passes(forms, Opts),
+ internal_comp(Ps, "", "", #compile{code=Forms,options=Opts});
+internal({file,File}, Opts) ->
+ Ps = passes(file, Opts),
+ Compile = #compile{options=Opts},
+ case member(from_core, Opts) of
+ true -> internal_comp(Ps, File, ".core", Compile);
+ false ->
+ case member(from_beam, Opts) of
+ true ->
+ internal_comp(Ps, File, ".beam", Compile);
+ false ->
+ case member(from_asm, Opts) orelse member(asm, Opts) of
+ true ->
+ internal_comp(Ps, File, ".S", Compile);
+ false ->
+ internal_comp(Ps, File, ".erl", Compile)
+ end
+ end
+ end.
+
+internal_comp(Passes, File, Suffix, St0) ->
+ Dir = filename:dirname(File),
+ Base = filename:basename(File, Suffix),
+ St1 = St0#compile{filename=File, dir=Dir, base=Base,
+ ifile=erlfile(Dir, Base, Suffix),
+ ofile=objfile(Base, St0)},
+ Run = case member(time, St1#compile.options) of
+ true ->
+ io:format("Compiling ~p\n", [File]),
+ fun run_tc/2;
+ false -> fun({_Name,Fun}, St) -> catch Fun(St) end
+ end,
+ case fold_comp(Passes, Run, St1) of
+ {ok,St2} -> comp_ret_ok(St2);
+ {error,St2} -> comp_ret_err(St2)
+ end.
+
+fold_comp([{Name,Test,Pass}|Ps], Run, St) ->
+ case Test(St) of
+ false -> %Pass is not needed.
+ fold_comp(Ps, Run, St);
+ true -> %Run pass in the usual way.
+ fold_comp([{Name,Pass}|Ps], Run, St)
+ end;
+fold_comp([{Name,Pass}|Ps], Run, St0) ->
+ case Run({Name,Pass}, St0) of
+ {ok,St1} -> fold_comp(Ps, Run, St1);
+ {error,St1} -> {error,St1};
+ {'EXIT',Reason} ->
+ Es = [{St0#compile.ifile,[{none,?MODULE,{crash,Name,Reason}}]}],
+ {error,St0#compile{errors=St0#compile.errors ++ Es}};
+ Other ->
+ Es = [{St0#compile.ifile,[{none,?MODULE,{bad_return,Name,Other}}]}],
+ {error,St0#compile{errors=St0#compile.errors ++ Es}}
+ end;
+fold_comp([], _Run, St) -> {ok,St}.
+
+os_process_size() ->
+ case os:type() of
+ {unix, sunos} ->
+ Size = os:cmd("ps -o vsz -p " ++ os:getpid() ++ " | tail -1"),
+ list_to_integer(lib:nonl(Size));
+ _ ->
+ 0
+ end.
+
+run_tc({Name,Fun}, St) ->
+ Before0 = statistics(runtime),
+ Val = (catch Fun(St)),
+ After0 = statistics(runtime),
+ {Before_c, _} = Before0,
+ {After_c, _} = After0,
+ io:format(" ~-30s: ~10.3f s (~w k)\n",
+ [Name, (After_c-Before_c) / 1000, os_process_size()]),
+ Val.
+
+comp_ret_ok(#compile{code=Code,warnings=Warn,module=Mod,options=Opts}=St) ->
+ report_warnings(St),
+ Ret1 = case member(binary, Opts) andalso not member(no_code_generation, Opts) of
+ true -> [Code];
+ false -> []
+ end,
+ Ret2 = case member(return_warnings, Opts) of
+ true -> Ret1 ++ [Warn];
+ false -> Ret1
+ end,
+ list_to_tuple([ok,Mod|Ret2]).
+
+comp_ret_err(St) ->
+ report_errors(St),
+ report_warnings(St),
+ case member(return_errors, St#compile.options) of
+ true -> {error,St#compile.errors,St#compile.warnings};
+ false -> error
+ end.
+
+%% passes(form|file, [Option]) -> [{Name,PassFun}]
+%% Figure out which passes that need to be run.
+
+passes(forms, Opts) ->
+ select_passes(standard_passes(), Opts);
+passes(file, Opts) ->
+ case member(from_beam, Opts) of
+ true ->
+ Ps = [?pass(read_beam_file)|binary_passes()],
+ select_passes(Ps, Opts);
+ false ->
+ Ps = case member(from_asm, Opts) orelse member(asm, Opts) of
+ true ->
+ [?pass(beam_consult_asm)|asm_passes()];
+ false ->
+ case member(from_core, Opts) of
+ true ->
+ [?pass(parse_core)|core_passes()];
+ false ->
+ [?pass(parse_module)|standard_passes()]
+ end
+ end,
+ Fs = select_passes(Ps, Opts),
+
+ %% If the last pass saves the resulting binary to a file,
+ %% insert a first pass to remove the file.
+ case last(Fs) of
+ {save_binary,_Fun} -> [?pass(remove_file)|Fs];
+ _Other -> Fs
+ end
+ end.
+
+%% select_passes([Command], Opts) -> [{Name,Function}]
+%% Interpret the lists of commands to return a pure list of passes.
+%%
+%% Command can be one of:
+%%
+%% {pass,Mod} Will be expanded to a call to the external
+%% function Mod:module(Code, Options). This
+%% function must transform the code and return
+%% {ok,NewCode} or {error,Term}.
+%% Example: {pass,beam_codegen}
+%%
+%% {Name,Fun} Name is an atom giving the name of the pass.
+%% Fun is an 'fun' taking one argument: a compile record.
+%% The fun should return {ok,NewCompileRecord} or
+%% {error,NewCompileRecord}.
+%% Note: ?pass(Name) is equvivalent to {Name,fun Name/1}.
+%% Example: ?pass(parse_module)
+%%
+%% {Name,Test,Fun} Like {Name,Fun} above, but the pass will be run
+%% (and listed by the `time' option) only if Test(St)
+%% returns true.
+%%
+%% {src_listing,Ext} Produces an Erlang source listing with the
+%% the file extension Ext. (Ext should not contain
+%% a period.) No more passes will be run.
+%%
+%% {listing,Ext} Produce an listing of the terms in the internal
+%% representation. The extension of the listing
+%% file will be Ext. (Ext should not contain
+%% a period.) No more passes will be run.
+%%
+%% {done,Ext} End compilation at this point. Produce a listing
+%% as with {listing,Ext}, unless 'binary' is
+%% specified, in which case the current
+%% representation of the code is returned without
+%% creating an output file.
+%%
+%% {iff,Flag,Cmd} If the given Flag is given in the option list,
+%% Cmd will be interpreted as a command.
+%% Otherwise, Cmd will be ignored.
+%% Example: {iff,dcg,{listing,"codegen}}
+%%
+%% {unless,Flag,Cmd} If the given Flag is NOT given in the option list,
+%% Cmd will be interpreted as a command.
+%% Otherwise, Cmd will be ignored.
+%% Example: {unless,no_kernopt,{pass,sys_kernopt}}
+%%
+
+select_passes([{pass,Mod}|Ps], Opts) ->
+ F = fun(St) ->
+ case catch Mod:module(St#compile.code, St#compile.options) of
+ {ok,Code} ->
+ {ok,St#compile{code=Code}};
+ {error,Es} ->
+ {error,St#compile{errors=St#compile.errors ++ Es}}
+ end
+ end,
+ [{Mod,F}|select_passes(Ps, Opts)];
+select_passes([{src_listing,Ext}|_], _Opts) ->
+ [{listing,fun (St) -> src_listing(Ext, St) end}];
+select_passes([{listing,Ext}|_], _Opts) ->
+ [{listing,fun (St) -> listing(Ext, St) end}];
+select_passes([{done,Ext}|_], Opts) ->
+ select_passes([{unless,binary,{listing,Ext}}], Opts);
+select_passes([{iff,Flag,Pass}|Ps], Opts) ->
+ select_cond(Flag, true, Pass, Ps, Opts);
+select_passes([{unless,Flag,Pass}|Ps], Opts) ->
+ select_cond(Flag, false, Pass, Ps, Opts);
+select_passes([{_,Fun}=P|Ps], Opts) when is_function(Fun) ->
+ [P|select_passes(Ps, Opts)];
+select_passes([{_,Test,Fun}=P|Ps], Opts) when is_function(Test),
+ is_function(Fun) ->
+ [P|select_passes(Ps, Opts)];
+select_passes([], _Opts) ->
+ [];
+select_passes([List|Ps], Opts) when is_list(List) ->
+ case select_passes(List, Opts) of
+ [] -> select_passes(Ps, Opts);
+ Nested ->
+ case last(Nested) of
+ {listing,_Fun} -> Nested;
+ _Other -> Nested ++ select_passes(Ps, Opts)
+ end
+ end.
+
+select_cond(Flag, ShouldBe, Pass, Ps, Opts) ->
+ ShouldNotBe = not ShouldBe,
+ case member(Flag, Opts) of
+ ShouldBe -> select_passes([Pass|Ps], Opts);
+ ShouldNotBe -> select_passes(Ps, Opts)
+ end.
+
+%% The standard passes (almost) always run.
+
+standard_passes() ->
+ [?pass(transform_module),
+ {iff,'dpp',{listing,"pp"}},
+ ?pass(lint_module),
+ {iff,'P',{src_listing,"P"}},
+ {iff,'to_pp',{done,"P"}},
+
+ {iff,'dabstr',{listing,"abstr"}},
+ {iff,debug_info,?pass(save_abstract_code)},
+
+ ?pass(expand_module),
+ {iff,'dexp',{listing,"expand"}},
+ {iff,'E',{src_listing,"E"}},
+ {iff,'to_exp',{done,"E"}},
+
+ %% Conversion to Core Erlang.
+ ?pass(core_module),
+ {iff,'dcore',{listing,"core"}},
+ {iff,'to_core0',{done,"core"}}
+ | core_passes()].
+
+core_passes() ->
+ %% Optimization and transforms of Core Erlang code.
+ [{unless,no_copt,
+ [{core_old_inliner,fun test_old_inliner/1,fun core_old_inliner/1},
+ ?pass(core_fold_module),
+ {core_inline_module,fun test_core_inliner/1,fun core_inline_module/1},
+ {core_fold_after_inline,fun test_core_inliner/1,fun core_fold_module/1},
+ ?pass(core_transforms)]},
+ {iff,dcopt,{listing,"copt"}},
+ {iff,'to_core',{done,"core"}}
+ | kernel_passes()].
+
+kernel_passes() ->
+ %% Destructive setelement/3 optimization and core lint.
+ [?pass(core_dsetel_module),
+ {iff,clint,?pass(core_lint_module)},
+ {iff,core,?pass(save_core_code)},
+
+ %% Kernel Erlang and code generation.
+ ?pass(kernel_module),
+ {iff,dkern,{listing,"kernel"}},
+ {iff,'to_kernel',{done,"kernel"}},
+ {pass,v3_life},
+ {iff,dlife,{listing,"life"}},
+ {pass,v3_codegen},
+ {iff,dcg,{listing,"codegen"}}
+ | asm_passes()].
+
+asm_passes() ->
+ %% Assembly level optimisations.
+ [{unless,no_postopt,
+ [{pass,beam_block},
+ {iff,dblk,{listing,"block"}},
+ {unless,no_bopt,{pass,beam_bool}},
+ {iff,dbool,{listing,"bool"}},
+ {unless,no_topt,{pass,beam_type}},
+ {iff,dtype,{listing,"type"}},
+ {pass,beam_dead}, %Must always run since it splits blocks.
+ {iff,ddead,{listing,"dead"}},
+ {unless,no_jopt,{pass,beam_jump}},
+ {iff,djmp,{listing,"jump"}},
+ {pass,beam_clean},
+ {iff,dclean,{listing,"clean"}},
+ {pass,beam_flatten}]},
+
+ %% If post optimizations are turned off, we still coalesce
+ %% adjacent labels and remove unused labels to keep the
+ %% HiPE compiler happy.
+ {iff,no_postopt,
+ [?pass(beam_unused_labels),
+ {pass,beam_clean}]},
+
+ {iff,dopt,{listing,"optimize"}},
+ {iff,'S',{listing,"S"}},
+ {iff,'to_asm',{done,"S"}},
+
+ {pass,beam_validator},
+ ?pass(beam_asm)
+ | binary_passes()].
+
+binary_passes() ->
+ [{native_compile,fun test_native/1,fun native_compile/1},
+ {unless,binary,?pass(save_binary)}].
+
+%%%
+%%% Compiler passes.
+%%%
+
+%% Remove the target file so we don't have an old one if the compilation fail.
+remove_file(St) ->
+ file:delete(St#compile.ofile),
+ {ok,St}.
+
+-record(asm_module, {module,
+ exports,
+ labels,
+ functions=[],
+ cfun,
+ code,
+ attributes=[]}).
+
+preprocess_asm_forms(Forms) ->
+ R = #asm_module{},
+ R1 = collect_asm(Forms, R),
+ {R1#asm_module.module,
+ {R1#asm_module.module,
+ R1#asm_module.exports,
+ R1#asm_module.attributes,
+ R1#asm_module.functions,
+ R1#asm_module.labels}}.
+
+collect_asm([], R) ->
+ case R#asm_module.cfun of
+ undefined ->
+ R;
+ {A,B,C} ->
+ R#asm_module{functions=R#asm_module.functions++
+ [{function,A,B,C,R#asm_module.code}]}
+ end;
+collect_asm([{module,M} | Rest], R) ->
+ collect_asm(Rest, R#asm_module{module=M});
+collect_asm([{exports,M} | Rest], R) ->
+ collect_asm(Rest, R#asm_module{exports=M});
+collect_asm([{labels,M} | Rest], R) ->
+ collect_asm(Rest, R#asm_module{labels=M});
+collect_asm([{function,A,B,C} | Rest], R) ->
+ R1 = case R#asm_module.cfun of
+ undefined ->
+ R;
+ {A0,B0,C0} ->
+ R#asm_module{functions=R#asm_module.functions++
+ [{function,A0,B0,C0,R#asm_module.code}]}
+ end,
+ collect_asm(Rest, R1#asm_module{cfun={A,B,C}, code=[]});
+collect_asm([{attributes, Attr} | Rest], R) ->
+ collect_asm(Rest, R#asm_module{attributes=Attr});
+collect_asm([X | Rest], R) ->
+ collect_asm(Rest, R#asm_module{code=R#asm_module.code++[X]}).
+
+beam_consult_asm(St) ->
+ case file:consult(St#compile.ifile) of
+ {ok, Forms0} ->
+ {Module, Forms} = preprocess_asm_forms(Forms0),
+ {ok,St#compile{module=Module, code=Forms}};
+ {error,E} ->
+ Es = [{St#compile.ifile,[{none,?MODULE,{open,E}}]}],
+ {error,St#compile{errors=St#compile.errors ++ Es}}
+ end.
+
+read_beam_file(St) ->
+ case file:read_file(St#compile.ifile) of
+ {ok,Beam} ->
+ Infile = St#compile.ifile,
+ case is_too_old(Infile) of
+ true ->
+ {ok,St#compile{module=none,code=none}};
+ false ->
+ Mod0 = filename:rootname(filename:basename(Infile)),
+ Mod = list_to_atom(Mod0),
+ {ok,St#compile{module=Mod,code=Beam,ofile=Infile}}
+ end;
+ {error,E} ->
+ Es = [{St#compile.ifile,[{none,?MODULE,{open,E}}]}],
+ {error,St#compile{errors=St#compile.errors ++ Es}}
+ end.
+
+is_too_old(BeamFile) ->
+ case beam_lib:chunks(BeamFile, ["CInf"]) of
+ {ok,{_,[{"CInf",Term0}]}} ->
+ Term = binary_to_term(Term0),
+ Opts = proplists:get_value(options, Term, []),
+ lists:member(no_new_funs, Opts);
+ _ -> false
+ end.
+
+parse_module(St) ->
+ Opts = St#compile.options,
+ Cwd = ".",
+ IncludePath = [Cwd, St#compile.dir|inc_paths(Opts)],
+ Tab = ets:new(compiler__tab, [protected,named_table]),
+ ets:insert(Tab, {compiler_options,Opts}),
+ R = epp:parse_file(St#compile.ifile, IncludePath, pre_defs(Opts)),
+ ets:delete(Tab),
+ case R of
+ {ok,Forms} ->
+ {ok,St#compile{code=Forms}};
+ {error,E} ->
+ Es = [{St#compile.ifile,[{none,?MODULE,{epp,E}}]}],
+ {error,St#compile{errors=St#compile.errors ++ Es}}
+ end.
+
+parse_core(St) ->
+ case file:read_file(St#compile.ifile) of
+ {ok,Bin} ->
+ case core_scan:string(binary_to_list(Bin)) of
+ {ok,Toks,_} ->
+ case core_parse:parse(Toks) of
+ {ok,Mod} ->
+ Name = (Mod#c_module.name)#c_atom.val,
+ {ok,St#compile{module=Name,code=Mod}};
+ {error,E} ->
+ Es = [{St#compile.ifile,[E]}],
+ {error,St#compile{errors=St#compile.errors ++ Es}}
+ end;
+ {error,E,_} ->
+ Es = [{St#compile.ifile,[E]}],
+ {error,St#compile{errors=St#compile.errors ++ Es}}
+ end;
+ {error,E} ->
+ Es = [{St#compile.ifile,[{none,compile,{open,E}}]}],
+ {error,St#compile{errors=St#compile.errors ++ Es}}
+ end.
+
+compile_options([{attribute,_L,compile,C}|Fs]) when is_list(C) ->
+ C ++ compile_options(Fs);
+compile_options([{attribute,_L,compile,C}|Fs]) ->
+ [C|compile_options(Fs)];
+compile_options([_F|Fs]) -> compile_options(Fs);
+compile_options([]) -> [].
+
+transforms(Os) -> [ M || {parse_transform,M} <- Os ].
+
+transform_module(St) ->
+ %% Extract compile options from code into options field.
+ Ts = transforms(St#compile.options ++ compile_options(St#compile.code)),
+ foldl_transform(St, Ts).
+
+foldl_transform(St, [T|Ts]) ->
+ Name = "transform " ++ atom_to_list(T),
+ Fun = fun(S) -> T:parse_transform(S#compile.code, S#compile.options) end,
+ Run = case member(time, St#compile.options) of
+ true -> fun run_tc/2;
+ false -> fun({_Name,F}, S) -> catch F(S) end
+ end,
+ case Run({Name, Fun}, St) of
+ {error,Es,Ws} ->
+ {error,St#compile{warnings=St#compile.warnings ++ Ws,
+ errors=St#compile.errors ++ Es}};
+ {'EXIT',R} ->
+ Es = [{St#compile.ifile,[{none,compile,{parse_transform,T,R}}]}],
+ {error,St#compile{errors=St#compile.errors ++ Es}};
+ Forms ->
+ foldl_transform(St#compile{code=Forms}, Ts)
+ end;
+foldl_transform(St, []) -> {ok,St}.
+
+get_core_transforms(Opts) -> [M || {core_transform,M} <- Opts].
+
+core_transforms(St) ->
+ %% The options field holds the complete list of options at this
+
+ Ts = get_core_transforms(St#compile.options),
+ foldl_core_transforms(St, Ts).
+
+foldl_core_transforms(St, [T|Ts]) ->
+ Name = "core transform " ++ atom_to_list(T),
+ Fun = fun(S) -> T:core_transform(S#compile.code, S#compile.options) end,
+ Run = case member(time, St#compile.options) of
+ true -> fun run_tc/2;
+ false -> fun({_Name,F}, S) -> catch F(S) end
+ end,
+ case Run({Name, Fun}, St) of
+ {'EXIT',R} ->
+ Es = [{St#compile.ifile,[{none,compile,{core_transform,T,R}}]}],
+ {error,St#compile{errors=St#compile.errors ++ Es}};
+ Forms ->
+ foldl_core_transforms(St#compile{code=Forms}, Ts)
+ end;
+foldl_core_transforms(St, []) -> {ok,St}.
+
+%%% Fetches the module name from a list of forms. The module attribute must
+%%% be present.
+get_module([{attribute,_,module,{M,_As}} | _]) -> M;
+get_module([{attribute,_,module,M} | _]) -> M;
+get_module([_ | Rest]) ->
+ get_module(Rest).
+
+%%% A #compile state is returned, where St.base has been filled in
+%%% with the module name from Forms, as a string, in case it wasn't
+%%% set in St (i.e., it was "").
+add_default_base(St, Forms) ->
+ F = St#compile.filename,
+ case F of
+ "" ->
+ M = get_module(Forms),
+ St#compile{base = atom_to_list(M)};
+ _ ->
+ St
+ end.
+
+lint_module(St) ->
+ case erl_lint:module(St#compile.code,
+ St#compile.ifile, St#compile.options) of
+ {ok,Ws} ->
+ %% Insert name of module as base name, if needed. This is
+ %% for compile:forms to work with listing files.
+ St1 = add_default_base(St, St#compile.code),
+ {ok,St1#compile{warnings=St1#compile.warnings ++ Ws}};
+ {error,Es,Ws} ->
+ {error,St#compile{warnings=St#compile.warnings ++ Ws,
+ errors=St#compile.errors ++ Es}}
+ end.
+
+core_lint_module(St) ->
+ case core_lint:module(St#compile.code, St#compile.options) of
+ {ok,Ws} ->
+ {ok,St#compile{warnings=St#compile.warnings ++ Ws}};
+ {error,Es,Ws} ->
+ {error,St#compile{warnings=St#compile.warnings ++ Ws,
+ errors=St#compile.errors ++ Es}}
+ end.
+
+%% expand_module(State) -> State'
+%% Do the common preprocessing of the input forms.
+
+expand_module(#compile{code=Code,options=Opts0}=St0) ->
+ {Mod,Exp,Forms,Opts1} = sys_pre_expand:module(Code, Opts0),
+ Opts2 = expand_opts(Opts1),
+ Opts = filter_opts(Opts2),
+ {ok,St0#compile{module=Mod,options=Opts,code={Mod,Exp,Forms}}}.
+
+core_module(#compile{code=Code0,options=Opts,ifile=File}=St) ->
+ {ok,Code,Ws} = v3_core:module(Code0, Opts),
+ {ok,St#compile{code=Code,warnings=St#compile.warnings ++ [{File,Ws}]}}.
+
+core_fold_module(#compile{code=Code0,options=Opts,ifile=File}=St) ->
+ {ok,Code,Ws} = sys_core_fold:module(Code0, Opts),
+ {ok,St#compile{code=Code,warnings=St#compile.warnings ++ [{File,Ws}]}}.
+
+test_old_inliner(#compile{options=Opts}) ->
+ %% The point of this test is to avoid loading the old inliner
+ %% if we know that it will not be used.
+ case any(fun(no_inline) -> true;
+ (_) -> false
+ end, Opts) of
+ true -> false;
+ false ->
+ any(fun({inline,_}) -> true;
+ (_) -> false
+ end, Opts)
+ end.
+
+test_core_inliner(#compile{options=Opts}) ->
+ case any(fun(no_inline) -> true;
+ (_) -> false
+ end, Opts) of
+ true -> false;
+ false ->
+ any(fun(inline) -> true;
+ (_) -> false
+ end, Opts)
+ end.
+
+core_old_inliner(#compile{code=Code0,options=Opts}=St) ->
+ case catch sys_core_inline:module(Code0, Opts) of
+ {ok,Code} ->
+ {ok,St#compile{code=Code}};
+ {error,Es} ->
+ {error,St#compile{errors=St#compile.errors ++ Es}}
+ end.
+
+core_inline_module(#compile{code=Code0,options=Opts}=St) ->
+ Code = cerl_inline:core_transform(Code0, Opts),
+ {ok,St#compile{code=Code}}.
+
+core_dsetel_module(#compile{code=Code0,options=Opts}=St) ->
+ {ok,Code} = sys_core_dsetel:module(Code0, Opts),
+ {ok,St#compile{code=Code}}.
+
+kernel_module(#compile{code=Code0,options=Opts,ifile=File}=St) ->
+ {ok,Code,Ws} = v3_kernel:module(Code0, Opts),
+ {ok,St#compile{code=Code,warnings=St#compile.warnings ++ [{File,Ws}]}}.
+
+save_abstract_code(St) ->
+ {ok,St#compile{abstract_code=abstract_code(St)}}.
+
+abstract_code(#compile{code=Code}) ->
+ Abstr = {raw_abstract_v1,Code},
+ case catch erlang:term_to_binary(Abstr, [compressed]) of
+ {'EXIT',_} -> term_to_binary(Abstr);
+ Other -> Other
+ end.
+
+save_core_code(St) ->
+ {ok,St#compile{core_code=cerl:from_records(St#compile.code)}}.
+
+beam_unused_labels(#compile{code=Code0}=St) ->
+ Code = beam_jump:module_labels(Code0),
+ {ok,St#compile{code=Code}}.
+
+beam_asm(#compile{ifile=File,code=Code0,abstract_code=Abst,options=Opts0}=St) ->
+ Source = filename:absname(File),
+ Opts = filter(fun is_informative_option/1, Opts0),
+ case beam_asm:module(Code0, Abst, Source, Opts) of
+ {ok,Code} -> {ok,St#compile{code=Code,abstract_code=[]}};
+ {error,Es} -> {error,St#compile{errors=St#compile.errors ++ Es}}
+ end.
+
+test_native(#compile{options=Opts}) ->
+ %% This test must be made late, because the r7 or no_new_funs options
+ %% will turn off the native option.
+ member(native, Opts).
+
+native_compile(#compile{code=none}=St) -> {ok,St};
+native_compile(St) ->
+ case erlang:system_info(hipe_architecture) of
+ undefined ->
+ Ws = [{St#compile.ifile,[{none,compile,no_native_support}]}],
+ {ok,St#compile{warnings=St#compile.warnings ++ Ws}};
+ _ ->
+ native_compile_1(St)
+ end.
+
+native_compile_1(St) ->
+ Opts0 = [no_new_binaries|St#compile.options],
+ IgnoreErrors = member(ignore_native_errors, Opts0),
+ Opts = case keysearch(hipe, 1, Opts0) of
+ {value,{hipe,L}} when list(L) -> L;
+ {value,{hipe,X}} -> [X];
+ _ -> []
+ end,
+ case catch hipe:compile(St#compile.module,
+ St#compile.core_code,
+ St#compile.code,
+ Opts) of
+ {ok, {Type,Bin}} when binary(Bin) ->
+ {ok, embed_native_code(St, {Type,Bin})};
+ {error, R} ->
+ case IgnoreErrors of
+ true ->
+ Ws = [{St#compile.ifile,[{none,?MODULE,{native,R}}]}],
+ {ok,St#compile{warnings=St#compile.warnings ++ Ws}};
+ false ->
+ Es = [{St#compile.ifile,[{none,?MODULE,{native,R}}]}],
+ {error,St#compile{errors=St#compile.errors ++ Es}}
+ end;
+ {'EXIT',R} ->
+ case IgnoreErrors of
+ true ->
+ Ws = [{St#compile.ifile,[{none,?MODULE,{native_crash,R}}]}],
+ {ok,St#compile{warnings=St#compile.warnings ++ Ws}};
+ false ->
+ exit(R)
+ end
+ end.
+
+embed_native_code(St, {Architecture,NativeCode}) ->
+ {ok, _, Chunks0} = beam_lib:all_chunks(St#compile.code),
+ ChunkName = hipe_unified_loader:chunk_name(Architecture),
+ Chunks1 = lists:keydelete(ChunkName, 1, Chunks0),
+ Chunks = Chunks1 ++ [{ChunkName,NativeCode}],
+ {ok, BeamPlusNative} = beam_lib:build_module(Chunks),
+ St#compile{code=BeamPlusNative}.
+
+%% Returns true if the option is informative and therefore should be included
+%% in the option list of the compiled module.
+
+is_informative_option(beam) -> false;
+is_informative_option(report_warnings) -> false;
+is_informative_option(report_errors) -> false;
+is_informative_option(binary) -> false;
+is_informative_option(verbose) -> false;
+is_informative_option(_) -> true.
+
+save_binary(#compile{code=none}=St) -> {ok,St};
+save_binary(St) ->
+ Tfile = tmpfile(St#compile.ofile), %Temp working file
+ case write_binary(Tfile, St#compile.code, St) of
+ ok ->
+ case file:rename(Tfile, St#compile.ofile) of
+ ok ->
+ {ok,St};
+ {error,_Error} ->
+ file:delete(Tfile),
+ Es = [{St#compile.ofile,[{none,?MODULE,{rename,Tfile}}]}],
+ {error,St#compile{errors=St#compile.errors ++ Es}}
+ end;
+ {error,_Error} ->
+ Es = [{Tfile,[{compile,write_error}]}],
+ {error,St#compile{errors=St#compile.errors ++ Es}}
+ end.
+
+write_binary(Name, Bin, St) ->
+ Opts = case member(compressed, St#compile.options) of
+ true -> [compressed];
+ false -> []
+ end,
+ case file:write_file(Name, Bin, Opts) of
+ ok -> ok;
+ {error,_}=Error -> Error
+ end.
+
+%% report_errors(State) -> ok
+%% report_warnings(State) -> ok
+
+report_errors(St) ->
+ case member(report_errors, St#compile.options) of
+ true ->
+ foreach(fun ({{F,_L},Eds}) -> list_errors(F, Eds);
+ ({F,Eds}) -> list_errors(F, Eds) end,
+ St#compile.errors);
+ false -> ok
+ end.
+
+report_warnings(#compile{options=Opts,warnings=Ws0}) ->
+ case member(report_warnings, Opts) of
+ true ->
+ Ws1 = flatmap(fun({{F,_L},Eds}) -> format_message(F, Eds);
+ ({F,Eds}) -> format_message(F, Eds) end,
+ Ws0),
+ Ws = ordsets:from_list(Ws1),
+ foreach(fun({_,Str}) -> io:put_chars(Str) end, Ws);
+ false -> ok
+ end.
+
+format_message(F, [{Line,Mod,E}|Es]) ->
+ M = {Line,io_lib:format("~s:~w: Warning: ~s\n", [F,Line,Mod:format_error(E)])},
+ [M|format_message(F, Es)];
+format_message(F, [{Mod,E}|Es]) ->
+ M = {none,io_lib:format("~s: Warning: ~s\n", [F,Mod:format_error(E)])},
+ [M|format_message(F, Es)];
+format_message(_, []) -> [].
+
+%% list_errors(File, ErrorDescriptors) -> ok
+
+list_errors(F, [{Line,Mod,E}|Es]) ->
+ io:fwrite("~s:~w: ~s\n", [F,Line,Mod:format_error(E)]),
+ list_errors(F, Es);
+list_errors(F, [{Mod,E}|Es]) ->
+ io:fwrite("~s: ~s\n", [F,Mod:format_error(E)]),
+ list_errors(F, Es);
+list_errors(_F, []) -> ok.
+
+%% erlfile(Dir, Base) -> ErlFile
+%% outfile(Base, Extension, Options) -> OutputFile
+%% objfile(Base, Target, Options) -> ObjFile
+%% tmpfile(ObjFile) -> TmpFile
+%% Work out the correct input and output file names.
+
+iofile(File) when atom(File) ->
+ iofile(atom_to_list(File));
+iofile(File) ->
+ {filename:dirname(File), filename:basename(File, ".erl")}.
+
+erlfile(Dir, Base, Suffix) ->
+ filename:join(Dir, Base++Suffix).
+
+outfile(Base, Ext, Opts) when atom(Ext) ->
+ outfile(Base, atom_to_list(Ext), Opts);
+outfile(Base, Ext, Opts) ->
+ Obase = case keysearch(outdir, 1, Opts) of
+ {value, {outdir, Odir}} -> filename:join(Odir, Base);
+ _Other -> Base % Not found or bad format
+ end,
+ Obase++"."++Ext.
+
+objfile(Base, St) ->
+ outfile(Base, "beam", St#compile.options).
+
+tmpfile(Ofile) ->
+ reverse([$#|tl(reverse(Ofile))]).
+
+%% pre_defs(Options)
+%% inc_paths(Options)
+%% Extract the predefined macros and include paths from the option list.
+
+pre_defs([{d,M,V}|Opts]) ->
+ [{M,V}|pre_defs(Opts)];
+pre_defs([{d,M}|Opts]) ->
+ [M|pre_defs(Opts)];
+pre_defs([_|Opts]) ->
+ pre_defs(Opts);
+pre_defs([]) -> [].
+
+inc_paths(Opts) ->
+ [ P || {i,P} <- Opts, list(P) ].
+
+src_listing(Ext, St) ->
+ listing(fun (Lf, {_Mod,_Exp,Fs}) -> do_src_listing(Lf, Fs);
+ (Lf, Fs) -> do_src_listing(Lf, Fs) end,
+ Ext, St).
+
+do_src_listing(Lf, Fs) ->
+ foreach(fun (F) -> io:put_chars(Lf, [erl_pp:form(F),"\n"]) end,
+ Fs).
+
+listing(Ext, St) ->
+ listing(fun(Lf, Fs) -> beam_listing:module(Lf, Fs) end, Ext, St).
+
+listing(LFun, Ext, St) ->
+ Lfile = outfile(St#compile.base, Ext, St#compile.options),
+ case file:open(Lfile, [write,delayed_write]) of
+ {ok,Lf} ->
+ LFun(Lf, St#compile.code),
+ ok = file:close(Lf),
+ {ok,St};
+ {error,_Error} ->
+ Es = [{Lfile,[{none,compile,write_error}]}],
+ {error,St#compile{errors=St#compile.errors ++ Es}}
+ end.
+
+options() ->
+ help(standard_passes()).
+
+help([{iff,Flag,{src_listing,Ext}}|T]) ->
+ io:fwrite("~p - Generate .~s source listing file\n", [Flag,Ext]),
+ help(T);
+help([{iff,Flag,{listing,Ext}}|T]) ->
+ io:fwrite("~p - Generate .~s file\n", [Flag,Ext]),
+ help(T);
+help([{iff,Flag,{Name,Fun}}|T]) when function(Fun) ->
+ io:fwrite("~p - Run ~s\n", [Flag,Name]),
+ help(T);
+help([{iff,_Flag,Action}|T]) ->
+ help(Action),
+ help(T);
+help([{unless,Flag,{pass,Pass}}|T]) ->
+ io:fwrite("~p - Skip the ~s pass\n", [Flag,Pass]),
+ help(T);
+help([{unless,no_postopt=Flag,List}|T]) when list(List) ->
+ %% Hard-coded knowledgde here.
+ io:fwrite("~p - Skip all post optimisation\n", [Flag]),
+ help(List),
+ help(T);
+help([{unless,_Flag,Action}|T]) ->
+ help(Action),
+ help(T);
+help([_|T]) ->
+ help(T);
+help(_) ->
+ ok.
+
+
+%% compile(AbsFileName, Outfilename, Options)
+%% Compile entry point for erl_compile.
+
+compile(File0, _OutFile, Options) ->
+ File = shorten_filename(File0),
+ case file(File, make_erl_options(Options)) of
+ {ok,_Mod} -> ok;
+ Other -> Other
+ end.
+
+compile_beam(File0, _OutFile, Opts) ->
+ File = shorten_filename(File0),
+ case file(File, [from_beam|make_erl_options(Opts)]) of
+ {ok,_Mod} -> ok;
+ Other -> Other
+ end.
+
+compile_asm(File0, _OutFile, Opts) ->
+ File = shorten_filename(File0),
+ case file(File, [asm|make_erl_options(Opts)]) of
+ {ok,_Mod} -> ok;
+ Other -> Other
+ end.
+
+compile_core(File0, _OutFile, Opts) ->
+ File = shorten_filename(File0),
+ case file(File, [from_core|make_erl_options(Opts)]) of
+ {ok,_Mod} -> ok;
+ Other -> Other
+ end.
+
+shorten_filename(Name0) ->
+ {ok,Cwd} = file:get_cwd(),
+ case lists:prefix(Cwd, Name0) of
+ false -> Name0;
+ true ->
+ Name = case lists:nthtail(length(Cwd), Name0) of
+ "/"++N -> N;
+ N -> N
+ end,
+ Name
+ end.
+
+%% Converts generic compiler options to specific options.
+
+make_erl_options(Opts) ->
+
+ %% This way of extracting will work even if the record passed
+ %% has more fields than known during compilation.
+
+ Includes = Opts#options.includes,
+ Defines = Opts#options.defines,
+ Outdir = Opts#options.outdir,
+ Warning = Opts#options.warning,
+ Verbose = Opts#options.verbose,
+ Specific = Opts#options.specific,
+ OutputType = Opts#options.output_type,
+ Cwd = Opts#options.cwd,
+
+ Options =
+ case Verbose of
+ true -> [verbose];
+ false -> []
+ end ++
+ case Warning of
+ 0 -> [];
+ _ -> [report_warnings]
+ end ++
+ map(
+ fun ({Name, Value}) ->
+ {d, Name, Value};
+ (Name) ->
+ {d, Name}
+ end,
+ Defines) ++
+ case OutputType of
+ undefined -> [];
+ jam -> [jam];
+ beam -> [beam];
+ native -> [native]
+ end,
+
+ Options++[report_errors, {cwd, Cwd}, {outdir, Outdir}|
+ map(fun(Dir) -> {i, Dir} end, Includes)]++Specific.
diff --git a/lib/dialyzer/test/options1_tests_SUITE_data/src/compiler/core_lib.erl b/lib/dialyzer/test/options1_tests_SUITE_data/src/compiler/core_lib.erl
new file mode 100644
index 0000000000..3a6158286f
--- /dev/null
+++ b/lib/dialyzer/test/options1_tests_SUITE_data/src/compiler/core_lib.erl
@@ -0,0 +1,509 @@
+%% ``The contents of this file are subject to the Erlang Public License,
+%% Version 1.1, (the "License"); you may not use this file except in
+%% compliance with the License. You should have received a copy of the
+%% Erlang Public License along with this software. If not, it can be
+%% retrieved via the world wide web at http://www.erlang.org/.
+%%
+%% Software distributed under the License is distributed on an "AS IS"
+%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
+%% the License for the specific language governing rights and limitations
+%% under the License.
+%%
+%% The Initial Developer of the Original Code is Ericsson Utvecklings AB.
+%% Portions created by Ericsson are Copyright 1999, Ericsson Utvecklings
+%% AB. All Rights Reserved.''
+%%
+%% $Id: core_lib.erl,v 1.1 2008/12/17 09:53:42 mikpe Exp $
+%%
+%% Purpose: Core Erlang abstract syntax functions.
+
+-module(core_lib).
+
+-export([get_anno/1,set_anno/2]).
+-export([is_atomic/1,is_literal/1,is_literal_list/1,
+ is_simple/1,is_simple_list/1,is_simple_top/1]).
+-export([literal_value/1,make_literal/1]).
+-export([make_values/1]).
+-export([map/2, fold/3, mapfold/3]).
+-export([is_var_used/2]).
+
+%% -compile([export_all]).
+
+-include("core_parse.hrl").
+
+%% get_anno(Core) -> Anno.
+%% set_anno(Core, Anno) -> Core.
+%% Generic get/set annotation.
+
+get_anno(C) -> element(2, C).
+set_anno(C, A) -> setelement(2, C, A).
+
+%% is_atomic(Expr) -> true | false.
+
+is_atomic(#c_char{}) -> true;
+is_atomic(#c_int{}) -> true;
+is_atomic(#c_float{}) -> true;
+is_atomic(#c_atom{}) -> true;
+is_atomic(#c_string{}) -> true;
+is_atomic(#c_nil{}) -> true;
+is_atomic(#c_fname{}) -> true;
+is_atomic(_) -> false.
+
+%% is_literal(Expr) -> true | false.
+
+is_literal(#c_cons{hd=H,tl=T}) ->
+ case is_literal(H) of
+ true -> is_literal(T);
+ false -> false
+ end;
+is_literal(#c_tuple{es=Es}) -> is_literal_list(Es);
+is_literal(#c_binary{segments=Es}) -> is_lit_bin(Es);
+is_literal(E) -> is_atomic(E).
+
+is_literal_list(Es) -> lists:all(fun is_literal/1, Es).
+
+is_lit_bin(Es) ->
+ lists:all(fun (#c_bitstr{val=E,size=S}) ->
+ is_literal(E) and is_literal(S)
+ end, Es).
+
+%% is_simple(Expr) -> true | false.
+
+is_simple(#c_var{}) -> true;
+is_simple(#c_cons{hd=H,tl=T}) ->
+ case is_simple(H) of
+ true -> is_simple(T);
+ false -> false
+ end;
+is_simple(#c_tuple{es=Es}) -> is_simple_list(Es);
+is_simple(#c_binary{segments=Es}) -> is_simp_bin(Es);
+is_simple(E) -> is_atomic(E).
+
+is_simple_list(Es) -> lists:all(fun is_simple/1, Es).
+
+is_simp_bin(Es) ->
+ lists:all(fun (#c_bitstr{val=E,size=S}) ->
+ is_simple(E) and is_simple(S)
+ end, Es).
+
+%% is_simple_top(Expr) -> true | false.
+%% Only check if the top-level is a simple.
+
+is_simple_top(#c_var{}) -> true;
+is_simple_top(#c_cons{}) -> true;
+is_simple_top(#c_tuple{}) -> true;
+is_simple_top(#c_binary{}) -> true;
+is_simple_top(E) -> is_atomic(E).
+
+%% literal_value(LitExpr) -> Value.
+%% Return the value of LitExpr.
+
+literal_value(#c_char{val=C}) -> C;
+literal_value(#c_int{val=I}) -> I;
+literal_value(#c_float{val=F}) -> F;
+literal_value(#c_atom{val=A}) -> A;
+literal_value(#c_string{val=S}) -> S;
+literal_value(#c_nil{}) -> [];
+literal_value(#c_cons{hd=H,tl=T}) ->
+ [literal_value(H)|literal_value(T)];
+literal_value(#c_tuple{es=Es}) ->
+ list_to_tuple(literal_value_list(Es)).
+
+literal_value_list(Vals) -> lists:map(fun literal_value/1, Vals).
+
+%% make_literal(Value) -> LitExpr.
+%% Make a literal expression from an Erlang value.
+
+make_literal(I) when integer(I) -> #c_int{val=I};
+make_literal(F) when float(F) -> #c_float{val=F};
+make_literal(A) when atom(A) -> #c_atom{val=A};
+make_literal([]) -> #c_nil{};
+make_literal([H|T]) ->
+ #c_cons{hd=make_literal(H),tl=make_literal(T)};
+make_literal(T) when tuple(T) ->
+ #c_tuple{es=make_literal_list(tuple_to_list(T))}.
+
+make_literal_list(Vals) -> lists:map(fun make_literal/1, Vals).
+
+%% make_values([CoreExpr] | CoreExpr) -> #c_values{} | CoreExpr.
+%% Make a suitable values structure, expr or values, depending on
+%% Expr.
+
+make_values([E]) -> E;
+make_values([H|_]=Es) -> #c_values{anno=get_anno(H),es=Es};
+make_values([]) -> #c_values{es=[]};
+make_values(E) -> E.
+
+%% map(MapFun, CoreExpr) -> CoreExpr.
+%% This function traverses the core parse format, at each level
+%% applying the submited argument function, assumed to do the real
+%% work.
+%%
+%% The "eager" style, where each component of a construct are
+%% descended to before the construct itself, admits that some
+%% companion functions (the F:s) may be made simpler, since it may be
+%% safely assumed that no lower illegal instanced will be
+%% created/uncovered by actions on the current level.
+
+map(F, #c_tuple{es=Es}=R) ->
+ F(R#c_tuple{es=map_list(F, Es)});
+map(F, #c_cons{hd=Hd, tl=Tl}=R) ->
+ F(R#c_cons{hd=map(F, Hd),
+ tl=map(F, Tl)});
+map(F, #c_values{es=Es}=R) ->
+ F(R#c_values{es=map_list(F, Es)});
+
+map(F, #c_alias{var=Var, pat=Pat}=R) ->
+ F(R#c_alias{var=map(F, Var),
+ pat=map(F, Pat)});
+
+map(F, #c_module{defs=Defs}=R) ->
+ F(R#c_module{defs=map_list(F, Defs)});
+map(F, #c_def{val=Val}=R) ->
+ F(R#c_def{val=map(F, Val)});
+
+map(F, #c_fun{vars=Vars, body=Body}=R) ->
+ F(R#c_fun{vars=map_list(F, Vars),
+ body=map(F, Body)});
+map(F, #c_let{vars=Vs, arg=Arg, body=Body}=R) ->
+ F(R#c_let{vars=map_list(F, Vs),
+ arg=map(F, Arg),
+ body=map(F, Body)});
+map(F, #c_letrec{defs=Fs,body=Body}=R) ->
+ F(R#c_letrec{defs=map_list(F, Fs),
+ body=map(F, Body)});
+map(F, #c_seq{arg=Arg, body=Body}=R) ->
+ F(R#c_seq{arg=map(F, Arg),
+ body=map(F, Body)});
+map(F, #c_case{arg=Arg, clauses=Clauses}=R) ->
+ F(R#c_case{arg=map(F, Arg),
+ clauses=map_list(F, Clauses)});
+map(F, #c_clause{pats=Ps, guard=Guard, body=Body}=R) ->
+ F(R#c_clause{pats=map_list(F, Ps),
+ guard=map(F, Guard),
+ body=map(F, Body)});
+map(F, #c_receive{clauses=Cls, timeout=Tout, action=Act}=R) ->
+ F(R#c_receive{clauses=map_list(F, Cls),
+ timeout=map(F, Tout),
+ action=map(F, Act)});
+map(F, #c_apply{op=Op,args=Args}=R) ->
+ F(R#c_apply{op=map(F, Op),
+ args=map_list(F, Args)});
+map(F, #c_call{module=M,name=N,args=Args}=R) ->
+ F(R#c_call{module=map(F, M),
+ name=map(F, N),
+ args=map_list(F, Args)});
+map(F, #c_primop{name=N,args=Args}=R) ->
+ F(R#c_primop{name=map(F, N),
+ args=map_list(F, Args)});
+map(F, #c_try{arg=Expr,vars=Vars,body=Body,evars=Evars,handler=Handler}=R) ->
+ F(R#c_try{arg=map(F, Expr),
+ vars=map(F, Vars),
+ body=map(F, Body),
+ evars=map(F, Evars),
+ handler=map(F, Handler)});
+map(F, #c_catch{body=Body}=R) ->
+ F(R#c_catch{body=map(F, Body)});
+map(F, T) -> F(T). %Atomic nodes.
+
+map_list(F, L) -> lists:map(fun (E) -> map(F, E) end, L).
+
+%% fold(FoldFun, Accumulator, CoreExpr) -> Accumulator.
+%% This function traverses the core parse format, at each level
+%% applying the submited argument function, assumed to do the real
+%% work, and keeping the accumulated result in the A (accumulator)
+%% argument.
+
+fold(F, Acc, #c_tuple{es=Es}=R) ->
+ F(R, fold_list(F, Acc, Es));
+fold(F, Acc, #c_cons{hd=Hd, tl=Tl}=R) ->
+ F(R, fold(F, fold(F, Acc, Hd), Tl));
+fold(F, Acc, #c_values{es=Es}=R) ->
+ F(R, fold_list(F, Acc, Es));
+
+fold(F, Acc, #c_alias{pat=P,var=V}=R) ->
+ F(R, fold(F, fold(F, Acc, P), V));
+
+fold(F, Acc, #c_module{defs=Defs}=R) ->
+ F(R, fold_list(F, Acc, Defs));
+fold(F, Acc, #c_def{val=Val}=R) ->
+ F(R, fold(F, Acc, Val));
+
+fold(F, Acc, #c_fun{vars=Vars, body=Body}=R) ->
+ F(R, fold(F, fold_list(F, Acc, Vars), Body));
+fold(F, Acc, #c_let{vars=Vs, arg=Arg, body=Body}=R) ->
+ F(R, fold(F, fold(F, fold_list(F, Acc, Vs), Arg), Body));
+fold(F, Acc, #c_letrec{defs=Fs,body=Body}=R) ->
+ F(R, fold(F, fold_list(F, Acc, Fs), Body));
+fold(F, Acc, #c_seq{arg=Arg, body=Body}=R) ->
+ F(R, fold(F, fold(F, Acc, Arg), Body));
+fold(F, Acc, #c_case{arg=Arg, clauses=Clauses}=R) ->
+ F(R, fold_list(F, fold(F, Acc, Arg), Clauses));
+fold(F, Acc, #c_clause{pats=Ps,guard=G,body=B}=R) ->
+ F(R, fold(F, fold(F, fold_list(F, Acc, Ps), G), B));
+fold(F, Acc, #c_receive{clauses=Cl, timeout=Ti, action=Ac}=R) ->
+ F(R, fold_list(F, fold(F, fold(F, Acc, Ac), Ti), Cl));
+fold(F, Acc, #c_apply{op=Op, args=Args}=R) ->
+ F(R, fold_list(F, fold(F, Acc, Op), Args));
+fold(F, Acc, #c_call{module=Mod,name=Name,args=Args}=R) ->
+ F(R, fold_list(F, fold(F, fold(F, Acc, Mod), Name), Args));
+fold(F, Acc, #c_primop{name=Name,args=Args}=R) ->
+ F(R, fold_list(F, fold(F, Acc, Name), Args));
+fold(F, Acc, #c_try{arg=E,vars=Vs,body=Body,evars=Evs,handler=H}=R) ->
+ NewB = fold(F, fold_list(F, fold(F, Acc, E), Vs), Body),
+ F(R, fold(F, fold_list(F, NewB, Evs), H));
+fold(F, Acc, #c_catch{body=Body}=R) ->
+ F(R, fold(F, Acc, Body));
+fold(F, Acc, T) -> %Atomic nodes
+ F(T, Acc).
+
+fold_list(F, Acc, L) ->
+ lists:foldl(fun (E, A) -> fold(F, A, E) end, Acc, L).
+
+%% mapfold(MapfoldFun, Accumulator, CoreExpr) -> {CoreExpr,Accumulator}.
+%% This function traverses the core parse format, at each level
+%% applying the submited argument function, assumed to do the real
+%% work, and keeping the accumulated result in the A (accumulator)
+%% argument.
+
+mapfold(F, Acc0, #c_tuple{es=Es0}=R) ->
+ {Es1,Acc1} = mapfold_list(F, Acc0, Es0),
+ F(R#c_tuple{es=Es1}, Acc1);
+mapfold(F, Acc0, #c_cons{hd=H0,tl=T0}=R) ->
+ {H1,Acc1} = mapfold(F, Acc0, H0),
+ {T1,Acc2} = mapfold(F, Acc1, T0),
+ F(R#c_cons{hd=H1,tl=T1}, Acc2);
+mapfold(F, Acc0, #c_values{es=Es0}=R) ->
+ {Es1,Acc1} = mapfold_list(F, Acc0, Es0),
+ F(R#c_values{es=Es1}, Acc1);
+
+mapfold(F, Acc0, #c_alias{pat=P0,var=V0}=R) ->
+ {P1,Acc1} = mapfold(F, Acc0, P0),
+ {V1,Acc2} = mapfold(F, Acc1, V0),
+ F(R#c_alias{pat=P1,var=V1}, Acc2);
+
+mapfold(F, Acc0, #c_module{defs=D0}=R) ->
+ {D1,Acc1} = mapfold_list(F, Acc0, D0),
+ F(R#c_module{defs=D1}, Acc1);
+mapfold(F, Acc0, #c_def{val=V0}=R) ->
+ {V1,Acc1} = mapfold(F, Acc0, V0),
+ F(R#c_def{val=V1}, Acc1);
+
+mapfold(F, Acc0, #c_fun{vars=Vs0, body=B0}=R) ->
+ {Vs1,Acc1} = mapfold_list(F, Acc0, Vs0),
+ {B1,Acc2} = mapfold(F, Acc1, B0),
+ F(R#c_fun{vars=Vs1,body=B1}, Acc2);
+mapfold(F, Acc0, #c_let{vars=Vs0, arg=A0, body=B0}=R) ->
+ {Vs1,Acc1} = mapfold_list(F, Acc0, Vs0),
+ {A1,Acc2} = mapfold(F, Acc1, A0),
+ {B1,Acc3} = mapfold(F, Acc2, B0),
+ F(R#c_let{vars=Vs1,arg=A1,body=B1}, Acc3);
+mapfold(F, Acc0, #c_letrec{defs=Fs0,body=B0}=R) ->
+ {Fs1,Acc1} = mapfold_list(F, Acc0, Fs0),
+ {B1,Acc2} = mapfold(F, Acc1, B0),
+ F(R#c_letrec{defs=Fs1,body=B1}, Acc2);
+mapfold(F, Acc0, #c_seq{arg=A0, body=B0}=R) ->
+ {A1,Acc1} = mapfold(F, Acc0, A0),
+ {B1,Acc2} = mapfold(F, Acc1, B0),
+ F(R#c_seq{arg=A1,body=B1}, Acc2);
+mapfold(F, Acc0, #c_case{arg=A0,clauses=Cs0}=R) ->
+ {A1,Acc1} = mapfold(F, Acc0, A0),
+ {Cs1,Acc2} = mapfold_list(F, Acc1, Cs0),
+ F(R#c_case{arg=A1,clauses=Cs1}, Acc2);
+mapfold(F, Acc0, #c_clause{pats=Ps0,guard=G0,body=B0}=R) ->
+ {Ps1,Acc1} = mapfold_list(F, Acc0, Ps0),
+ {G1,Acc2} = mapfold(F, Acc1, G0),
+ {B1,Acc3} = mapfold(F, Acc2, B0),
+ F(R#c_clause{pats=Ps1,guard=G1,body=B1}, Acc3);
+mapfold(F, Acc0, #c_receive{clauses=Cs0,timeout=T0,action=A0}=R) ->
+ {T1,Acc1} = mapfold(F, Acc0, T0),
+ {Cs1,Acc2} = mapfold_list(F, Acc1, Cs0),
+ {A1,Acc3} = mapfold(F, Acc2, A0),
+ F(R#c_receive{clauses=Cs1,timeout=T1,action=A1}, Acc3);
+mapfold(F, Acc0, #c_apply{op=Op0, args=As0}=R) ->
+ {Op1,Acc1} = mapfold(F, Acc0, Op0),
+ {As1,Acc2} = mapfold_list(F, Acc1, As0),
+ F(R#c_apply{op=Op1,args=As1}, Acc2);
+mapfold(F, Acc0, #c_call{module=M0,name=N0,args=As0}=R) ->
+ {M1,Acc1} = mapfold(F, Acc0, M0),
+ {N1,Acc2} = mapfold(F, Acc1, N0),
+ {As1,Acc3} = mapfold_list(F, Acc2, As0),
+ F(R#c_call{module=M1,name=N1,args=As1}, Acc3);
+mapfold(F, Acc0, #c_primop{name=N0, args=As0}=R) ->
+ {N1,Acc1} = mapfold(F, Acc0, N0),
+ {As1,Acc2} = mapfold_list(F, Acc1, As0),
+ F(R#c_primop{name=N1,args=As1}, Acc2);
+mapfold(F, Acc0, #c_try{arg=E0,vars=Vs0,body=B0,evars=Evs0,handler=H0}=R) ->
+ {E1,Acc1} = mapfold(F, Acc0, E0),
+ {Vs1,Acc2} = mapfold_list(F, Acc1, Vs0),
+ {B1,Acc3} = mapfold(F, Acc2, B0),
+ {Evs1,Acc4} = mapfold_list(F, Acc3, Evs0),
+ {H1,Acc5} = mapfold(F, Acc4, H0),
+ F(R#c_try{arg=E1,vars=Vs1,body=B1,evars=Evs1,handler=H1}, Acc5);
+mapfold(F, Acc0, #c_catch{body=B0}=R) ->
+ {B1,Acc1} = mapfold(F, Acc0, B0),
+ F(R#c_catch{body=B1}, Acc1);
+mapfold(F, Acc, T) -> %Atomic nodes
+ F(T, Acc).
+
+mapfold_list(F, Acc, L) ->
+ lists:mapfoldl(fun (E, A) -> mapfold(F, A, E) end, Acc, L).
+
+%% is_var_used(VarName, Expr) -> true | false.
+%% Test if the variable VarName is used in Expr.
+
+is_var_used(V, B) -> vu_body(V, B).
+
+vu_body(V, #c_values{es=Es}) ->
+ vu_expr_list(V, Es);
+vu_body(V, Body) ->
+ vu_expr(V, Body).
+
+vu_expr(V, #c_var{name=V2}) -> V =:= V2;
+vu_expr(V, #c_cons{hd=H,tl=T}) ->
+ case vu_expr(V, H) of
+ true -> true;
+ false -> vu_expr(V, T)
+ end;
+vu_expr(V, #c_tuple{es=Es}) ->
+ vu_expr_list(V, Es);
+vu_expr(V, #c_binary{segments=Ss}) ->
+ vu_seg_list(V, Ss);
+vu_expr(V, #c_fun{vars=Vs,body=B}) ->
+ %% Variables in fun shadow previous variables
+ case vu_var_list(V, Vs) of
+ true -> false;
+ false -> vu_body(V, B)
+ end;
+vu_expr(V, #c_let{vars=Vs,arg=Arg,body=B}) ->
+ case vu_body(V, Arg) of
+ true -> true;
+ false ->
+ %% Variables in let shadow previous variables.
+ case vu_var_list(V, Vs) of
+ true -> false;
+ false -> vu_body(V, B)
+ end
+ end;
+vu_expr(V, #c_letrec{defs=Fs,body=B}) ->
+ case lists:any(fun (#c_def{val=Fb}) -> vu_body(V, Fb) end, Fs) of
+ true -> true;
+ false -> vu_body(V, B)
+ end;
+vu_expr(V, #c_seq{arg=Arg,body=B}) ->
+ case vu_expr(V, Arg) of
+ true -> true;
+ false -> vu_body(V, B)
+ end;
+vu_expr(V, #c_case{arg=Arg,clauses=Cs}) ->
+ case vu_expr(V, Arg) of
+ true -> true;
+ false -> vu_clauses(V, Cs)
+ end;
+vu_expr(V, #c_receive{clauses=Cs,timeout=T,action=A}) ->
+ case vu_clauses(V, Cs) of
+ true -> true;
+ false ->
+ case vu_expr(V, T) of
+ true -> true;
+ false -> vu_body(V, A)
+ end
+ end;
+vu_expr(V, #c_apply{op=Op,args=As}) ->
+ vu_expr_list(V, [Op|As]);
+vu_expr(V, #c_call{module=M,name=N,args=As}) ->
+ vu_expr_list(V, [M,N|As]);
+vu_expr(V, #c_primop{args=As}) -> %Name is an atom
+ vu_expr_list(V, As);
+vu_expr(V, #c_catch{body=B}) ->
+ vu_body(V, B);
+vu_expr(V, #c_try{arg=E,vars=Vs,body=B,evars=Evs,handler=H}) ->
+ case vu_body(V, E) of
+ true -> true;
+ false ->
+ %% Variables shadow previous ones.
+ case case vu_var_list(V, Vs) of
+ true -> false;
+ false -> vu_body(V, B)
+ end of
+ true -> true;
+ false ->
+ case vu_var_list(V, Evs) of
+ true -> false;
+ false -> vu_body(V, H)
+ end
+ end
+ end;
+vu_expr(_, _) -> false. %Everything else
+
+vu_expr_list(V, Es) ->
+ lists:any(fun(E) -> vu_expr(V, E) end, Es).
+
+vu_seg_list(V, Ss) ->
+ lists:any(fun (#c_bitstr{val=Val,size=Size}) ->
+ case vu_expr(V, Val) of
+ true -> true;
+ false -> vu_expr(V, Size)
+ end
+ end, Ss).
+
+%% vu_clause(VarName, Clause) -> true | false.
+%% vu_clauses(VarName, [Clause]) -> true | false.
+%% Have to get the pattern results right.
+
+vu_clause(V, #c_clause{pats=Ps,guard=G,body=B}) ->
+ case vu_pattern_list(V, Ps) of
+ {true,_Shad} -> true; %It is used
+ {false,true} -> false; %Shadowed
+ {false,false} -> %Not affected
+ case vu_expr(V, G) of
+ true -> true;
+ false ->vu_body(V, B)
+ end
+ end.
+
+vu_clauses(V, Cs) ->
+ lists:any(fun(C) -> vu_clause(V, C) end, Cs).
+
+%% vu_pattern(VarName, Pattern) -> {Used,Shadow}.
+%% vu_pattern_list(VarName, [Pattern]) -> {Used,Shadow}.
+%% Binaries complicate patterns as a variable can both be properly
+%% used, in a bit segment size, and shadow. They can also do both.
+
+%%vu_pattern(V, Pat) -> vu_pattern(V, Pat, {false,false}).
+
+vu_pattern(V, #c_var{name=V2}, St) ->
+ setelement(2, St, V =:= V2);
+vu_pattern(V, #c_cons{hd=H,tl=T}, St0) ->
+ case vu_pattern(V, H, St0) of
+ {true,true}=St1 -> St1; %Nothing more to know
+ St1 -> vu_pattern(V, T, St1)
+ end;
+vu_pattern(V, #c_tuple{es=Es}, St) ->
+ vu_pattern_list(V, Es, St);
+vu_pattern(V, #c_binary{segments=Ss}, St) ->
+ vu_pat_seg_list(V, Ss, St);
+vu_pattern(V, #c_alias{var=Var,pat=P}, St0) ->
+ case vu_pattern(V, Var, St0) of
+ {true,true}=St1 -> St1;
+ St1 -> vu_pattern(V, P, St1)
+ end;
+vu_pattern(_, _, St) -> St.
+
+vu_pattern_list(V, Ps) -> vu_pattern_list(V, Ps, {false,false}).
+
+vu_pattern_list(V, Ps, St0) ->
+ lists:foldl(fun(P, St) -> vu_pattern(V, P, St) end, St0, Ps).
+
+vu_pat_seg_list(V, Ss, St) ->
+ lists:foldl(fun (#c_bitstr{val=Val,size=Size}, St0) ->
+ case vu_pattern(V, Val, St0) of
+ {true,true}=St1 -> St1;
+ {_Used,Shad} -> {vu_expr(V, Size),Shad}
+ end
+ end, St, Ss).
+
+%% vu_var_list(VarName, [Var]) -> true | false.
+
+vu_var_list(V, Vs) ->
+ lists:any(fun (#c_var{name=V2}) -> V =:= V2 end, Vs).
diff --git a/lib/dialyzer/test/options1_tests_SUITE_data/src/compiler/core_lint.erl b/lib/dialyzer/test/options1_tests_SUITE_data/src/compiler/core_lint.erl
new file mode 100644
index 0000000000..2946fcb8c0
--- /dev/null
+++ b/lib/dialyzer/test/options1_tests_SUITE_data/src/compiler/core_lint.erl
@@ -0,0 +1,515 @@
+%% ``The contents of this file are subject to the Erlang Public License,
+%% Version 1.1, (the "License"); you may not use this file except in
+%% compliance with the License. You should have received a copy of the
+%% Erlang Public License along with this software. If not, it can be
+%% retrieved via the world wide web at http://www.erlang.org/.
+%%
+%% Software distributed under the License is distributed on an "AS IS"
+%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
+%% the License for the specific language governing rights and limitations
+%% under the License.
+%%
+%% The Initial Developer of the Original Code is Ericsson Utvecklings AB.
+%% Portions created by Ericsson are Copyright 1999, Ericsson Utvecklings
+%% AB. All Rights Reserved.''
+%%
+%% $Id: core_lint.erl,v 1.1 2008/12/17 09:53:42 mikpe Exp $
+%%
+%% Purpose : Do necessary checking of Core Erlang code.
+
+%% Check Core module for errors. Seeing this module is used in the
+%% compiler after optimisations wedone more checking than would be
+%% necessary after just parsing. Don't check all constructs.
+%%
+%% We check the following:
+%%
+%% All referred functions, called and exported, are defined.
+%% Format of export list.
+%% Format of attributes
+%% Used variables are defined.
+%% Variables in let and funs.
+%% Patterns case clauses.
+%% Values only as multiple values/variables/patterns.
+%% Return same number of values as requested
+%% Correct number of arguments
+%%
+%% Checks to add:
+%%
+%% Consistency of values/variables
+%% Consistency of function return values/calls.
+%%
+%% We keep the names defined variables and functions in a ordered list
+%% of variable names and function name/arity pairs.
+
+-module(core_lint).
+
+
+-export([module/1,module/2,format_error/1]).
+
+-import(lists, [reverse/1,all/2,foldl/3]).
+-import(ordsets, [add_element/2,is_element/2,union/2]).
+%-import(ordsets, [subtract/2]).
+
+-include("core_parse.hrl").
+
+%% Define the lint state record.
+
+-record(lint, {module=[], %Current module
+ func=[], %Current function
+ errors=[], %Errors
+ warnings=[]}). %Warnings
+
+%% Keep track of defined
+-record(def, {vars=[],
+ funs=[]}).
+
+%%-deftype retcount() -> any | unknown | int().
+
+%% format_error(Error)
+%% Return a string describing the error.
+
+format_error(invalid_exports) -> "invalid exports";
+format_error(invalid_attributes) -> "invalid attributes";
+format_error({undefined_function,{F,A}}) ->
+ io_lib:format("function ~w/~w undefined", [F,A]);
+format_error({undefined_function,{F1,A1},{F2,A2}}) ->
+ io_lib:format("undefined function ~w/~w in ~w/~w", [F1,A1,F2,A2]);
+format_error({illegal_expr,{F,A}}) ->
+ io_lib:format("illegal expression in ~w/~w", [F,A]);
+format_error({illegal_guard,{F,A}}) ->
+ io_lib:format("illegal guard expression in ~w/~w", [F,A]);
+format_error({illegal_pattern,{F,A}}) ->
+ io_lib:format("illegal pattern in ~w/~w", [F,A]);
+format_error({illegal_try,{F,A}}) ->
+ io_lib:format("illegal try expression in ~w/~w", [F,A]);
+format_error({pattern_mismatch,{F,A}}) ->
+ io_lib:format("pattern count mismatch in ~w/~w", [F,A]);
+format_error({return_mismatch,{F,A}}) ->
+ io_lib:format("return count mismatch in ~w/~w", [F,A]);
+format_error({arg_mismatch,{F,A}}) ->
+ io_lib:format("argument count mismatch in ~w/~w", [F,A]);
+format_error({unbound_var,N,{F,A}}) ->
+ io_lib:format("unbound variable ~s in ~w/~w", [N,F,A]);
+format_error({duplicate_var,N,{F,A}}) ->
+ io_lib:format("duplicate variable ~s in ~w/~w", [N,F,A]);
+format_error({not_var,{F,A}}) ->
+ io_lib:format("expecting variable in ~w/~w", [F,A]);
+format_error({not_pattern,{F,A}}) ->
+ io_lib:format("expecting pattern in ~w/~w", [F,A]);
+format_error({not_bs_pattern,{F,A}}) ->
+ io_lib:format("expecting bit syntax pattern in ~w/~w", [F,A]).
+
+%% module(CoreMod) ->
+%% module(CoreMod, [CompileOption]) ->
+%% {ok,[Warning]} | {error,[Error],[Warning]}
+
+module(M) -> module(M, []).
+
+module(#c_module{name=M,exports=Es,attrs=As,defs=Ds}, _Opts) ->
+ Defined = defined_funcs(Ds),
+ St0 = #lint{module=M#c_atom.val},
+ St1 = check_exports(Es, St0),
+ St2 = check_attrs(As, St1),
+ St3 = module_defs(Ds, Defined, St2),
+ St4 = check_state(Es, Defined, St3),
+ return_status(St4).
+
+%% defined_funcs([FuncDef]) -> [Fname].
+
+defined_funcs(Fs) ->
+ foldl(fun (#c_def{name=#c_fname{id=I,arity=A}}, Def) ->
+ add_element({I,A}, Def)
+ end, [], Fs).
+
+%% return_status(State) ->
+%% {ok,[Warning]} | {error,[Error],[Warning]}
+%% Pack errors and warnings properly and return ok | error.
+
+return_status(St) ->
+ Ws = reverse(St#lint.warnings),
+ case reverse(St#lint.errors) of
+ [] -> {ok,[{St#lint.module,Ws}]};
+ Es -> {error,[{St#lint.module,Es}],[{St#lint.module,Ws}]}
+ end.
+
+%% add_error(ErrorDescriptor, State) -> State'
+%% add_warning(ErrorDescriptor, State) -> State'
+%% Note that we don't use line numbers here.
+
+add_error(E, St) -> St#lint{errors=[{none,core_lint,E}|St#lint.errors]}.
+
+%%add_warning(W, St) -> St#lint{warnings=[{none,core_lint,W}|St#lint.warnings]}.
+
+check_exports(Es, St) ->
+ case all(fun (#c_fname{id=Name,arity=Arity}) when
+ atom(Name), integer(Arity) -> true;
+ (_) -> false
+ end, Es) of
+ true -> St;
+ false -> add_error(invalid_exports, St)
+ end.
+
+check_attrs(As, St) ->
+ case all(fun (#c_def{name=#c_atom{},val=V}) -> core_lib:is_literal(V);
+ (_) -> false
+ end, As) of
+ true -> St;
+ false -> add_error(invalid_attributes, St)
+ end.
+
+check_state(Es, Defined, St) ->
+ foldl(fun (#c_fname{id=N,arity=A}, St1) ->
+ F = {N,A},
+ case is_element(F, Defined) of
+ true -> St1;
+ false -> add_error({undefined_function,F}, St)
+ end
+ end, St, Es).
+% Undef = subtract(Es, Defined),
+% St1 = foldl(fun (F, St) -> add_error({undefined_function,F}, St) end,
+% St0, Undef),
+% St1.
+
+%% module_defs(CoreBody, Defined, State) -> State.
+
+module_defs(B, Def, St) ->
+ %% Set top level function name.
+ foldl(fun (Func, St0) ->
+ #c_fname{id=F,arity=A} = Func#c_def.name,
+ St1 = St0#lint{func={F,A}},
+ function(Func, Def, St1)
+ end, St, B).
+
+%% functions([Fdef], Defined, State) -> State.
+
+functions(Fs, Def, St0) ->
+ foldl(fun (F, St) -> function(F, Def, St) end, St0, Fs).
+
+%% function(CoreFunc, Defined, State) -> State.
+
+function(#c_def{name=#c_fname{},val=B}, Def, St) ->
+ %% Body must be a fun!
+ case B of
+ #c_fun{} -> expr(B, Def, any, St);
+ _ -> add_error({illegal_expr,St#lint.func}, St)
+ end.
+
+%% body(Expr, Defined, RetCount, State) -> State.
+
+body(#c_values{es=Es}, Def, Rt, St) ->
+ return_match(Rt, length(Es), expr_list(Es, Def, St));
+body(E, Def, Rt, St0) ->
+ St1 = expr(E, Def, Rt, St0),
+ case core_lib:is_simple_top(E) of
+ true -> return_match(Rt, 1, St1);
+ false -> St1
+ end.
+
+%% guard(Expr, Defined, State) -> State.
+%% Guards are boolean expressions with test wrapped in a protected.
+
+guard(Expr, Def, St) -> gexpr(Expr, Def, 1, St).
+
+%% guard_list([Expr], Defined, State) -> State.
+
+%% guard_list(Es, Def, St0) ->
+%% foldl(fun (E, St) -> guard(E, Def, St) end, St0, Es).
+
+%% gbody(Expr, Defined, RetCount, State) -> State.
+
+gbody(#c_values{es=Es}, Def, Rt, St) ->
+ return_match(Rt, length(Es), gexpr_list(Es, Def, St));
+gbody(E, Def, Rt, St0) ->
+ St1 = gexpr(E, Def, Rt, St0),
+ case core_lib:is_simple_top(E) of
+ true -> return_match(Rt, 1, St1);
+ false -> St1
+ end.
+
+gexpr(#c_var{name=N}, Def, _Rt, St) -> expr_var(N, Def, St);
+gexpr(#c_int{}, _Def, _Rt, St) -> St;
+gexpr(#c_float{}, _Def, _Rt, St) -> St;
+gexpr(#c_atom{}, _Def, _Rt, St) -> St;
+gexpr(#c_char{}, _Def, _Rt, St) -> St;
+gexpr(#c_string{}, _Def, _Rt, St) -> St;
+gexpr(#c_nil{}, _Def, _Rt, St) -> St;
+gexpr(#c_cons{hd=H,tl=T}, Def, _Rt, St) ->
+ gexpr_list([H,T], Def, St);
+gexpr(#c_tuple{es=Es}, Def, _Rt, St) ->
+ gexpr_list(Es, Def, St);
+gexpr(#c_binary{segments=Ss}, Def, _Rt, St) ->
+ gbitstr_list(Ss, Def, St);
+gexpr(#c_seq{arg=Arg,body=B}, Def, Rt, St0) ->
+ St1 = gexpr(Arg, Def, any, St0), %Ignore values
+ gbody(B, Def, Rt, St1);
+gexpr(#c_let{vars=Vs,arg=Arg,body=B}, Def, Rt, St0) ->
+ St1 = gbody(Arg, Def, let_varcount(Vs), St0), %This is a guard body
+ {Lvs,St2} = variable_list(Vs, St1),
+ gbody(B, union(Lvs, Def), Rt, St2);
+gexpr(#c_call{module=#c_atom{val=erlang},
+ name=#c_atom{},
+ args=As}, Def, 1, St) ->
+ gexpr_list(As, Def, St);
+gexpr(#c_primop{name=N,args=As}, Def, _Rt, St0) when record(N, c_atom) ->
+ gexpr_list(As, Def, St0);
+gexpr(#c_try{arg=E,vars=[#c_var{name=X}],body=#c_var{name=X},
+ evars=[#c_var{},#c_var{},#c_var{}],handler=#c_atom{val=false}},
+ Def, Rt, St) ->
+ gbody(E, Def, Rt, St);
+gexpr(_, _, _, St) ->
+ add_error({illegal_guard,St#lint.func}, St).
+
+%% gexpr_list([Expr], Defined, State) -> State.
+
+gexpr_list(Es, Def, St0) ->
+ foldl(fun (E, St) -> gexpr(E, Def, 1, St) end, St0, Es).
+
+%% gbitstr_list([Elem], Defined, State) -> State.
+
+gbitstr_list(Es, Def, St0) ->
+ foldl(fun (E, St) -> gbitstr(E, Def, St) end, St0, Es).
+
+gbitstr(#c_bitstr{val=V,size=S,unit=U,type=T,flags=Fs}, Def, St0) ->
+ St1 = bit_type(U, T, Fs, St0),
+ gexpr_list([V,S], Def, St1).
+
+%% expr(Expr, Defined, RetCount, State) -> State.
+
+expr(#c_var{name=N}, Def, _Rt, St) -> expr_var(N, Def, St);
+expr(#c_int{}, _Def, _Rt, St) -> St;
+expr(#c_float{}, _Def, _Rt, St) -> St;
+expr(#c_atom{}, _Def, _Rt, St) -> St;
+expr(#c_char{}, _Def, _Rt, St) -> St;
+expr(#c_string{}, _Def, _Rt, St) -> St;
+expr(#c_nil{}, _Def, _Rt, St) -> St;
+expr(#c_cons{hd=H,tl=T}, Def, _Rt, St) ->
+ expr_list([H,T], Def, St);
+expr(#c_tuple{es=Es}, Def, _Rt, St) ->
+ expr_list(Es, Def, St);
+expr(#c_binary{segments=Ss}, Def, _Rt, St) ->
+ bitstr_list(Ss, Def, St);
+expr(#c_fname{id=I,arity=A}, Def, _Rt, St) ->
+ expr_fname({I,A}, Def, St);
+expr(#c_fun{vars=Vs,body=B}, Def, Rt, St0) ->
+ {Vvs,St1} = variable_list(Vs, St0),
+ return_match(Rt, 1, body(B, union(Vvs, Def), any, St1));
+expr(#c_seq{arg=Arg,body=B}, Def, Rt, St0) ->
+ St1 = expr(Arg, Def, any, St0), %Ignore values
+ body(B, Def, Rt, St1);
+expr(#c_let{vars=Vs,arg=Arg,body=B}, Def, Rt, St0) ->
+ St1 = body(Arg, Def, let_varcount(Vs), St0), %This is a body
+ {Lvs,St2} = variable_list(Vs, St1),
+ body(B, union(Lvs, Def), Rt, St2);
+expr(#c_letrec{defs=Fs,body=B}, Def0, Rt, St0) ->
+ Def1 = union(defined_funcs(Fs), Def0), %All defined stuff
+ St1 = functions(Fs, Def1, St0),
+ body(B, Def1, Rt, St1#lint{func=St0#lint.func});
+expr(#c_case{arg=Arg,clauses=Cs}, Def, Rt, St0) ->
+ Pc = case_patcount(Cs),
+ St1 = body(Arg, Def, Pc, St0),
+ clauses(Cs, Def, Pc, Rt, St1);
+expr(#c_receive{clauses=Cs,timeout=T,action=A}, Def, Rt, St0) ->
+ St1 = expr(T, Def, 1, St0),
+ St2 = body(A, Def, Rt, St1),
+ clauses(Cs, Def, 1, Rt, St2);
+expr(#c_apply{op=Op,args=As}, Def, _Rt, St0) ->
+ St1 = apply_op(Op, Def, length(As), St0),
+ expr_list(As, Def, St1);
+expr(#c_call{module=M,name=N,args=As}, Def, _Rt, St0) ->
+ St1 = expr(M, Def, 1, St0),
+ St2 = expr(N, Def, 1, St1),
+ expr_list(As, Def, St2);
+expr(#c_primop{name=N,args=As}, Def, _Rt, St0) when record(N, c_atom) ->
+ expr_list(As, Def, St0);
+expr(#c_catch{body=B}, Def, Rt, St) ->
+ return_match(Rt, 1, body(B, Def, 1, St));
+expr(#c_try{arg=A,vars=Vs,body=B,evars=Evs,handler=H}, Def, Rt, St0) ->
+ St1 = case length(Evs) of
+ 2 -> St0;
+ _ -> add_error({illegal_try,St0#lint.func}, St0)
+ end,
+ St2 = body(A, Def, let_varcount(Vs), St1),
+ {Ns,St3} = variable_list(Vs, St2),
+ St4 = body(B, union(Ns, Def), Rt, St3),
+ {Ens,St5} = variable_list(Evs, St4),
+ body(H, union(Ens, Def), Rt, St5);
+expr(_, _, _, St) ->
+ %%io:fwrite("clint: ~p~n", [Other]),
+ add_error({illegal_expr,St#lint.func}, St).
+
+%% expr_list([Expr], Defined, State) -> State.
+
+expr_list(Es, Def, St0) ->
+ foldl(fun (E, St) -> expr(E, Def, 1, St) end, St0, Es).
+
+%% bitstr_list([Elem], Defined, State) -> State.
+
+bitstr_list(Es, Def, St0) ->
+ foldl(fun (E, St) -> bitstr(E, Def, St) end, St0, Es).
+
+bitstr(#c_bitstr{val=V,size=S,unit=U,type=T,flags=Fs}, Def, St0) ->
+ St1 = bit_type(U, T, Fs, St0),
+ expr_list([V,S], Def, St1).
+
+%% apply_op(Op, Defined, ArgCount, State) -> State.
+%% A apply op is either an fname or an expression.
+
+apply_op(#c_fname{id=I,arity=A}, Def, Ac, St0) ->
+ St1 = expr_fname({I,A}, Def, St0),
+ arg_match(Ac, A, St1);
+apply_op(E, Def, _, St) -> expr(E, Def, 1, St). %Hard to check
+
+%% expr_var(VarName, Defined, State) -> State.
+
+expr_var(N, Def, St) ->
+ case is_element(N, Def) of
+ true -> St;
+ false -> add_error({unbound_var,N,St#lint.func}, St)
+ end.
+
+%% expr_fname(Fname, Defined, State) -> State.
+
+expr_fname(Fname, Def, St) ->
+ case is_element(Fname, Def) of
+ true -> St;
+ false -> add_error({undefined_function,Fname,St#lint.func}, St)
+ end.
+
+%% let_varcount([Var]) -> int().
+
+let_varcount([]) -> any; %Ignore values
+let_varcount(Es) -> length(Es).
+
+%% case_patcount([Clause]) -> int().
+
+case_patcount([#c_clause{pats=Ps}|_]) -> length(Ps).
+
+%% clauses([Clause], Defined, PatCount, RetCount, State) -> State.
+
+clauses(Cs, Def, Pc, Rt, St0) ->
+ foldl(fun (C, St) -> clause(C, Def, Pc, Rt, St) end, St0, Cs).
+
+%% clause(Clause, Defined, PatCount, RetCount, State) -> State.
+
+clause(#c_clause{pats=Ps,guard=G,body=B}, Def0, Pc, Rt, St0) ->
+ St1 = pattern_match(Pc, length(Ps), St0),
+ {Pvs,St2} = pattern_list(Ps, Def0, St1),
+ Def1 = union(Pvs, Def0),
+ St3 = guard(G, Def1, St2),
+ body(B, Def1, Rt, St3).
+
+%% variable(Var, [PatVar], State) -> {[VarName],State}.
+
+variable(#c_var{name=N}, Ps, St) ->
+ case is_element(N, Ps) of
+ true -> {[],add_error({duplicate_var,N,St#lint.func}, St)};
+ false -> {[N],St}
+ end;
+variable(_, Def, St) -> {Def,add_error({not_var,St#lint.func}, St)}.
+
+%% variable_list([Var], State) -> {[Var],State}.
+%% variable_list([Var], [PatVar], State) -> {[Var],State}.
+
+variable_list(Vs, St) -> variable_list(Vs, [], St).
+
+variable_list(Vs, Ps, St) ->
+ foldl(fun (V, {Ps0,St0}) ->
+ {Vvs,St1} = variable(V, Ps0, St0),
+ {union(Vvs, Ps0),St1}
+ end, {Ps,St}, Vs).
+
+%% pattern(Pattern, Defined, State) -> {[PatVar],State}.
+%% pattern(Pattern, Defined, [PatVar], State) -> {[PatVar],State}.
+%% Patterns are complicated by sizes in binaries. These are pure
+%% input variables which create no bindings. We, therefor, need to
+%% carry around the original defined variables to get the correct
+%% handling.
+
+%% pattern(P, Def, St) -> pattern(P, Def, [], St).
+
+pattern(#c_var{name=N}, Def, Ps, St) ->
+ pat_var(N, Def, Ps, St);
+pattern(#c_int{}, _Def, Ps, St) -> {Ps,St};
+pattern(#c_float{}, _Def, Ps, St) -> {Ps,St};
+pattern(#c_atom{}, _Def, Ps, St) -> {Ps,St};
+pattern(#c_char{}, _Def, Ps, St) -> {Ps,St};
+pattern(#c_string{}, _Def, Ps, St) -> {Ps,St};
+pattern(#c_nil{}, _Def, Ps, St) -> {Ps,St};
+pattern(#c_cons{hd=H,tl=T}, Def, Ps, St) ->
+ pattern_list([H,T], Def, Ps, St);
+pattern(#c_tuple{es=Es}, Def, Ps, St) ->
+ pattern_list(Es, Def, Ps, St);
+pattern(#c_binary{segments=Ss}, Def, Ps, St) ->
+ pat_bin(Ss, Def, Ps, St);
+pattern(#c_alias{var=V,pat=P}, Def, Ps, St0) ->
+ {Vvs,St1} = variable(V, Ps, St0),
+ pattern(P, Def, union(Vvs, Ps), St1);
+pattern(_, _, Ps, St) -> {Ps,add_error({not_pattern,St#lint.func}, St)}.
+
+pat_var(N, _Def, Ps, St) ->
+ case is_element(N, Ps) of
+ true -> {Ps,add_error({duplicate_var,N,St#lint.func}, St)};
+ false -> {add_element(N, Ps),St}
+ end.
+
+%% pat_bin_list([Elem], Defined, [PatVar], State) -> {[PatVar],State}.
+
+pat_bin(Es, Def, Ps0, St0) ->
+ foldl(fun (E, {Ps,St}) -> pat_segment(E, Def, Ps, St) end, {Ps0,St0}, Es).
+
+pat_segment(#c_bitstr{val=V,size=S,unit=U,type=T,flags=Fs}, Def, Ps, St0) ->
+ St1 = bit_type(U, T, Fs, St0),
+ St2 = pat_bit_expr(S, T, Def, St1),
+ pattern(V, Def, Ps, St2);
+pat_segment(_, _, Ps, St) ->
+ {Ps,add_error({not_bs_pattern,St#lint.func}, St)}.
+
+%% pat_bit_expr(SizePat, Type, Defined, State) -> State.
+%% Check the Size pattern, this is an input! Be a bit tough here.
+
+pat_bit_expr(#c_int{val=I}, _, _, St) when I >= 0 -> St;
+pat_bit_expr(#c_var{name=N}, _, Def, St) ->
+ expr_var(N, Def, St);
+pat_bit_expr(#c_atom{val=all}, binary, _Def, St) -> St;
+pat_bit_expr(_, _, _, St) ->
+ add_error({illegal_expr,St#lint.func}, St).
+
+bit_type(Unit, Type, Flags, St) ->
+ U = core_lib:literal_value(Unit),
+ T = core_lib:literal_value(Type),
+ Fs = core_lib:literal_value(Flags),
+ case erl_bits:set_bit_type(default, [T,{unit,U}|Fs]) of
+ {ok,_,_} -> St;
+ {error,E} -> add_error({E,St#lint.func}, St)
+ end.
+
+%% pattern_list([Var], Defined, State) -> {[PatVar],State}.
+%% pattern_list([Var], Defined, [PatVar], State) -> {[PatVar],State}.
+
+pattern_list(Pats, Def, St) -> pattern_list(Pats, Def, [], St).
+
+pattern_list(Pats, Def, Ps0, St0) ->
+ foldl(fun (P, {Ps,St}) -> pattern(P, Def, Ps, St) end, {Ps0,St0}, Pats).
+
+%% pattern_match(Required, Supplied, State) -> State.
+%% Check that the required number of patterns match the supplied.
+
+pattern_match(N, N, St) -> St;
+pattern_match(_Req, _Sup, St) ->
+ add_error({pattern_mismatch,St#lint.func}, St).
+
+%% return_match(Required, Supplied, State) -> State.
+%% Check that the required number of return values match the supplied.
+
+return_match(any, _Sup, St) -> St;
+return_match(_Req, unknown, St) -> St;
+return_match(N, N, St) -> St;
+return_match(_Req, _Sup, St) ->
+ add_error({return_mismatch,St#lint.func}, St).
+
+%% arg_match(Required, Supplied, State) -> State.
+
+arg_match(_Req, unknown, St) -> St;
+arg_match(N, N, St) -> St;
+arg_match(_Req, _Sup, St) ->
+ add_error({arg_mismatch,St#lint.func}, St).
diff --git a/lib/dialyzer/test/options1_tests_SUITE_data/src/compiler/core_parse.erl b/lib/dialyzer/test/options1_tests_SUITE_data/src/compiler/core_parse.erl
new file mode 100644
index 0000000000..942845bef7
--- /dev/null
+++ b/lib/dialyzer/test/options1_tests_SUITE_data/src/compiler/core_parse.erl
@@ -0,0 +1,4911 @@
+-module(core_parse).
+-define(THIS_MODULE, core_parse).
+-export([parse/1, parse_and_scan/1, format_error/1]).
+
+-export([abstract/1,abstract/2,normalise/1]).
+
+%% The following directive is needed for (significantly) faster compilation
+%% of the generated .erl file by the HiPE compiler. Please do not remove.
+-compile([{hipe,[{regalloc,linear_scan}]}]).
+
+-include("core_parse.hrl").
+
+tok_val(T) -> element(3, T).
+tok_line(T) -> element(2, T).
+
+abstract(T, _N) -> abstract(T).
+
+abstract(Term) -> core_lib:make_literal(Term).
+
+normalise(Core) -> core_lib:literal_value(Core).
+
+%% ``The contents of this file are subject to the Erlang Public License,
+%% Version 1.1, (the "License"); you may not use this file except in
+%% compliance with the License. You should have received a copy of the
+%% Erlang Public License along with this software. If not, it can be
+%% retrieved via the world wide web at http://www.erlang.org/.
+%%
+%% Software distributed under the License is distributed on an "AS IS"
+%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
+%% the License for the specific language governing rights and limitations
+%% under the License.
+%%
+%% The Initial Developer of the Original Code is Ericsson Utvecklings AB.
+%% Portions created by Ericsson are Copyright 1999, Ericsson Utvecklings
+%% AB. All Rights Reserved.''
+%%
+%% $Id: core_parse.erl,v 1.1 2008/12/17 09:53:42 mikpe Exp $
+%%
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+% The parser generator will insert appropriate declarations before this line.%
+
+parse(Tokens) ->
+ case catch yeccpars1(Tokens, false, 0, [], []) of
+ error ->
+ Errorline =
+ if Tokens == [] -> 0; true -> element(2, hd(Tokens)) end,
+ {error,
+ {Errorline, ?THIS_MODULE, "syntax error at or after this line."}};
+ Other ->
+ Other
+ end.
+
+parse_and_scan({Mod, Fun, Args}) ->
+ case apply(Mod, Fun, Args) of
+ {eof, _} ->
+ {ok, eof};
+ {error, Descriptor, _} ->
+ {error, Descriptor};
+ {ok, Tokens, _} ->
+ yeccpars1(Tokens, {Mod, Fun, Args}, 0, [], [])
+ end.
+
+format_error(Message) ->
+ case io_lib:deep_char_list(Message) of
+ true ->
+ Message;
+ _ ->
+ io_lib:write(Message)
+ end.
+
+% To be used in grammar files to throw an error message to the parser toplevel.
+% Doesn't have to be exported!
+return_error(Line, Message) ->
+ throw({error, {Line, ?THIS_MODULE, Message}}).
+
+
+% Don't change yeccpars1/6 too much, it is called recursively by yeccpars2/8!
+yeccpars1([Token | Tokens], Tokenizer, State, States, Vstack) ->
+ yeccpars2(State, element(1, Token), States, Vstack, Token, Tokens,
+ Tokenizer);
+yeccpars1([], {M, F, A}, State, States, Vstack) ->
+ case catch apply(M, F, A) of
+ {eof, Endline} ->
+ {error, {Endline, ?THIS_MODULE, "end_of_file"}};
+ {error, Descriptor, _Endline} ->
+ {error, Descriptor};
+ {'EXIT', Reason} ->
+ {error, {0, ?THIS_MODULE, Reason}};
+ {ok, Tokens, _Endline} ->
+ case catch yeccpars1(Tokens, {M, F, A}, State, States, Vstack) of
+ error ->
+ Errorline = element(2, hd(Tokens)),
+ {error, {Errorline, ?THIS_MODULE,
+ "syntax error at or after this line."}};
+ Other ->
+ Other
+ end
+ end;
+yeccpars1([], false, State, States, Vstack) ->
+ yeccpars2(State, '$end', States, Vstack, {'$end', 999999}, [], false).
+
+% For internal use only.
+yeccerror(Token) ->
+ {error,
+ {element(2, Token), ?THIS_MODULE,
+ ["syntax error before: ", yecctoken2string(Token)]}}.
+
+yecctoken2string({atom, _, A}) -> io_lib:write(A);
+yecctoken2string({integer,_,N}) -> io_lib:write(N);
+yecctoken2string({float,_,F}) -> io_lib:write(F);
+yecctoken2string({char,_,C}) -> io_lib:write_char(C);
+yecctoken2string({var,_,V}) -> io_lib:format('~s', [V]);
+yecctoken2string({string,_,S}) -> io_lib:write_string(S);
+yecctoken2string({reserved_symbol, _, A}) -> io_lib:format('~w', [A]);
+yecctoken2string({_Cat, _, Val}) -> io_lib:format('~w', [Val]);
+
+yecctoken2string({'dot', _}) -> io_lib:format('~w', ['.']);
+yecctoken2string({'$end', _}) ->
+ [];
+yecctoken2string({Other, _}) when atom(Other) ->
+ io_lib:format('~w', [Other]);
+yecctoken2string(Other) ->
+ io_lib:write(Other).
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+
+yeccpars2(0, '(', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 1, [0 | __Ss], [__T | __Stack]);
+yeccpars2(0, 'module', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 2, [0 | __Ss], [__T | __Stack]);
+yeccpars2(0, _, _, _, __T, _, _) ->
+ yeccerror(__T);
+yeccpars2(1, 'module', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 313, [1 | __Ss], [__T | __Stack]);
+yeccpars2(1, _, _, _, __T, _, _) ->
+ yeccerror(__T);
+yeccpars2(2, 'atom', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 4, [2 | __Ss], [__T | __Stack]);
+yeccpars2(2, _, _, _, __T, _, _) ->
+ yeccerror(__T);
+yeccpars2(3, '$end', _, __Stack, _, _, _) ->
+ {ok, hd(__Stack)};
+yeccpars2(3, _, _, _, __T, _, _) ->
+ yeccerror(__T);
+yeccpars2(4, '[', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 5, [4 | __Ss], [__T | __Stack]);
+yeccpars2(4, _, _, _, __T, _, _) ->
+ yeccerror(__T);
+yeccpars2(5, 'atom', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 11, [5 | __Ss], [__T | __Stack]);
+yeccpars2(5, ']', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 306, [5 | __Ss], [__T | __Stack]);
+yeccpars2(5, _, _, _, __T, _, _) ->
+ yeccerror(__T);
+yeccpars2(6, 'attributes', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 7, [6 | __Ss], [__T | __Stack]);
+yeccpars2(6, _, _, _, __T, _, _) ->
+ yeccerror(__T);
+yeccpars2(7, '[', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 276, [7 | __Ss], [__T | __Stack]);
+yeccpars2(7, _, _, _, __T, _, _) ->
+ yeccerror(__T);
+yeccpars2(8, '(', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 9, [8 | __Ss], [__T | __Stack]);
+yeccpars2(8, 'atom', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 11, [8 | __Ss], [__T | __Stack]);
+yeccpars2(8, __Cat, __Ss, __Stack, __T, __Ts, __Tzr) ->
+ __Val = [],
+ yeccpars2(13, __Cat, [8 | __Ss], [__Val | __Stack], __T, __Ts, __Tzr);
+yeccpars2(9, 'atom', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 11, [9 | __Ss], [__T | __Stack]);
+yeccpars2(9, _, _, _, __T, _, _) ->
+ yeccerror(__T);
+yeccpars2(10, '=', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 20, [10 | __Ss], [__T | __Stack]);
+yeccpars2(10, _, _, _, __T, _, _) ->
+ yeccerror(__T);
+yeccpars2(11, '/', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 18, [11 | __Ss], [__T | __Stack]);
+yeccpars2(11, _, _, _, __T, _, _) ->
+ yeccerror(__T);
+yeccpars2(12, '(', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 9, [12 | __Ss], [__T | __Stack]);
+yeccpars2(12, 'atom', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 11, [12 | __Ss], [__T | __Stack]);
+yeccpars2(12, __Cat, __Ss, __Stack, __T, __Ts, __Tzr) ->
+ __Val = [],
+ yeccpars2(17, __Cat, [12 | __Ss], [__Val | __Stack], __T, __Ts, __Tzr);
+yeccpars2(13, __Cat, __Ss, [__1|__Stack], __T, __Ts, __Tzr) ->
+ __Val = __1,
+ yeccpars2(yeccgoto(module_defs, hd(__Ss)), __Cat, __Ss, [__Val | __Stack], __T, __Ts, __Tzr);
+yeccpars2(14, __Cat, __Ss, [__1|__Stack], __T, __Ts, __Tzr) ->
+ __Val = __1,
+ yeccpars2(yeccgoto(anno_function_name, hd(__Ss)), __Cat, __Ss, [__Val | __Stack], __T, __Ts, __Tzr);
+yeccpars2(15, 'end', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 16, [15 | __Ss], [__T | __Stack]);
+yeccpars2(15, _, _, _, __T, _, _) ->
+ yeccerror(__T);
+yeccpars2(16, __Cat, __Ss, [__6,__5,__4,__3,__2,__1|__Stack], __T, __Ts, __Tzr) ->
+ __Val = #c_module{name = #c_atom{val = tok_val(__2)}, exports = __3, attrs = __4, defs = __5},
+ __Nss = lists:nthtail(5, __Ss),
+ yeccpars2(yeccgoto(module_definition, hd(__Nss)), __Cat, __Nss, [__Val | __Stack], __T, __Ts, __Tzr);
+yeccpars2(17, __Cat, __Ss, [__2,__1|__Stack], __T, __Ts, __Tzr) ->
+ __Val = [__1|__2],
+ __Nss = lists:nthtail(1, __Ss),
+ yeccpars2(yeccgoto(function_definitions, hd(__Nss)), __Cat, __Nss, [__Val | __Stack], __T, __Ts, __Tzr);
+yeccpars2(18, 'integer', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 19, [18 | __Ss], [__T | __Stack]);
+yeccpars2(18, _, _, _, __T, _, _) ->
+ yeccerror(__T);
+yeccpars2(19, __Cat, __Ss, [__3,__2,__1|__Stack], __T, __Ts, __Tzr) ->
+ __Val = #c_fname{id = tok_val(__1), arity = tok_val(__3)},
+ __Nss = lists:nthtail(2, __Ss),
+ yeccpars2(yeccgoto(function_name, hd(__Nss)), __Cat, __Nss, [__Val | __Stack], __T, __Ts, __Tzr);
+yeccpars2(20, 'fun', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 23, [20 | __Ss], [__T | __Stack]);
+yeccpars2(20, '(', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 21, [20 | __Ss], [__T | __Stack]);
+yeccpars2(20, _, _, _, __T, _, _) ->
+ yeccerror(__T);
+yeccpars2(21, 'fun', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 23, [21 | __Ss], [__T | __Stack]);
+yeccpars2(21, _, _, _, __T, _, _) ->
+ yeccerror(__T);
+yeccpars2(22, __Cat, __Ss, [__3,__2,__1|__Stack], __T, __Ts, __Tzr) ->
+ __Val = #c_def{name = __1, val = __3},
+ __Nss = lists:nthtail(2, __Ss),
+ yeccpars2(yeccgoto(function_definition, hd(__Nss)), __Cat, __Nss, [__Val | __Stack], __T, __Ts, __Tzr);
+yeccpars2(23, '(', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 25, [23 | __Ss], [__T | __Stack]);
+yeccpars2(23, _, _, _, __T, _, _) ->
+ yeccerror(__T);
+yeccpars2(24, __Cat, __Ss, [__1|__Stack], __T, __Ts, __Tzr) ->
+ __Val = __1,
+ yeccpars2(yeccgoto(anno_fun, hd(__Ss)), __Cat, __Ss, [__Val | __Stack], __T, __Ts, __Tzr);
+yeccpars2(25, ')', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 27, [25 | __Ss], [__T | __Stack]);
+yeccpars2(25, '(', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 26, [25 | __Ss], [__T | __Stack]);
+yeccpars2(25, 'var', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 30, [25 | __Ss], [__T | __Stack]);
+yeccpars2(25, _, _, _, __T, _, _) ->
+ yeccerror(__T);
+yeccpars2(26, 'var', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 30, [26 | __Ss], [__T | __Stack]);
+yeccpars2(26, _, _, _, __T, _, _) ->
+ yeccerror(__T);
+yeccpars2(27, '->', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 265, [27 | __Ss], [__T | __Stack]);
+yeccpars2(27, _, _, _, __T, _, _) ->
+ yeccerror(__T);
+yeccpars2(28, ',', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 263, [28 | __Ss], [__T | __Stack]);
+yeccpars2(28, __Cat, __Ss, [__1|__Stack], __T, __Ts, __Tzr) ->
+ __Val = [__1],
+ yeccpars2(yeccgoto(anno_variables, hd(__Ss)), __Cat, __Ss, [__Val | __Stack], __T, __Ts, __Tzr);
+yeccpars2(29, ')', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 32, [29 | __Ss], [__T | __Stack]);
+yeccpars2(29, _, _, _, __T, _, _) ->
+ yeccerror(__T);
+yeccpars2(30, __Cat, __Ss, [__1|__Stack], __T, __Ts, __Tzr) ->
+ __Val = #c_var{name = tok_val(__1)},
+ yeccpars2(yeccgoto(variable, hd(__Ss)), __Cat, __Ss, [__Val | __Stack], __T, __Ts, __Tzr);
+yeccpars2(31, __Cat, __Ss, [__1|__Stack], __T, __Ts, __Tzr) ->
+ __Val = __1,
+ yeccpars2(yeccgoto(anno_variable, hd(__Ss)), __Cat, __Ss, [__Val | __Stack], __T, __Ts, __Tzr);
+yeccpars2(32, '->', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 33, [32 | __Ss], [__T | __Stack]);
+yeccpars2(32, _, _, _, __T, _, _) ->
+ yeccerror(__T);
+yeccpars2(33, 'receive', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 65, [33 | __Ss], [__T | __Stack]);
+yeccpars2(33, 'catch', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 48, [33 | __Ss], [__T | __Stack]);
+yeccpars2(33, 'try', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 70, [33 | __Ss], [__T | __Stack]);
+yeccpars2(33, 'primop', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 63, [33 | __Ss], [__T | __Stack]);
+yeccpars2(33, 'call', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 44, [33 | __Ss], [__T | __Stack]);
+yeccpars2(33, 'apply', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 40, [33 | __Ss], [__T | __Stack]);
+yeccpars2(33, 'case', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 46, [33 | __Ss], [__T | __Stack]);
+yeccpars2(33, 'letrec', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 60, [33 | __Ss], [__T | __Stack]);
+yeccpars2(33, 'let', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 58, [33 | __Ss], [__T | __Stack]);
+yeccpars2(33, 'fun', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 23, [33 | __Ss], [__T | __Stack]);
+yeccpars2(33, 'do', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 52, [33 | __Ss], [__T | __Stack]);
+yeccpars2(33, 'atom', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 41, [33 | __Ss], [__T | __Stack]);
+yeccpars2(33, '#', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 34, [33 | __Ss], [__T | __Stack]);
+yeccpars2(33, '[', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 37, [33 | __Ss], [__T | __Stack]);
+yeccpars2(33, '{', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 74, [33 | __Ss], [__T | __Stack]);
+yeccpars2(33, 'string', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 69, [33 | __Ss], [__T | __Stack]);
+yeccpars2(33, 'float', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 54, [33 | __Ss], [__T | __Stack]);
+yeccpars2(33, 'integer', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 57, [33 | __Ss], [__T | __Stack]);
+yeccpars2(33, 'char', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 50, [33 | __Ss], [__T | __Stack]);
+yeccpars2(33, '<', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 36, [33 | __Ss], [__T | __Stack]);
+yeccpars2(33, '(', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 35, [33 | __Ss], [__T | __Stack]);
+yeccpars2(33, 'var', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 30, [33 | __Ss], [__T | __Stack]);
+yeccpars2(33, _, _, _, __T, _, _) ->
+ yeccerror(__T);
+yeccpars2(34, '{', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 247, [34 | __Ss], [__T | __Stack]);
+yeccpars2(34, _, _, _, __T, _, _) ->
+ yeccerror(__T);
+yeccpars2(35, 'receive', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 65, [35 | __Ss], [__T | __Stack]);
+yeccpars2(35, 'catch', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 48, [35 | __Ss], [__T | __Stack]);
+yeccpars2(35, 'try', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 70, [35 | __Ss], [__T | __Stack]);
+yeccpars2(35, 'primop', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 63, [35 | __Ss], [__T | __Stack]);
+yeccpars2(35, 'call', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 44, [35 | __Ss], [__T | __Stack]);
+yeccpars2(35, 'apply', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 40, [35 | __Ss], [__T | __Stack]);
+yeccpars2(35, 'case', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 46, [35 | __Ss], [__T | __Stack]);
+yeccpars2(35, 'letrec', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 60, [35 | __Ss], [__T | __Stack]);
+yeccpars2(35, 'let', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 58, [35 | __Ss], [__T | __Stack]);
+yeccpars2(35, 'fun', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 23, [35 | __Ss], [__T | __Stack]);
+yeccpars2(35, 'do', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 52, [35 | __Ss], [__T | __Stack]);
+yeccpars2(35, 'atom', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 41, [35 | __Ss], [__T | __Stack]);
+yeccpars2(35, '#', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 34, [35 | __Ss], [__T | __Stack]);
+yeccpars2(35, '[', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 37, [35 | __Ss], [__T | __Stack]);
+yeccpars2(35, '{', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 74, [35 | __Ss], [__T | __Stack]);
+yeccpars2(35, 'string', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 69, [35 | __Ss], [__T | __Stack]);
+yeccpars2(35, 'float', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 54, [35 | __Ss], [__T | __Stack]);
+yeccpars2(35, 'integer', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 57, [35 | __Ss], [__T | __Stack]);
+yeccpars2(35, 'char', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 50, [35 | __Ss], [__T | __Stack]);
+yeccpars2(35, '<', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 36, [35 | __Ss], [__T | __Stack]);
+yeccpars2(35, 'var', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 30, [35 | __Ss], [__T | __Stack]);
+yeccpars2(35, _, _, _, __T, _, _) ->
+ yeccerror(__T);
+yeccpars2(36, 'receive', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 65, [36 | __Ss], [__T | __Stack]);
+yeccpars2(36, 'catch', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 48, [36 | __Ss], [__T | __Stack]);
+yeccpars2(36, 'try', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 70, [36 | __Ss], [__T | __Stack]);
+yeccpars2(36, 'primop', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 63, [36 | __Ss], [__T | __Stack]);
+yeccpars2(36, 'call', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 44, [36 | __Ss], [__T | __Stack]);
+yeccpars2(36, 'apply', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 40, [36 | __Ss], [__T | __Stack]);
+yeccpars2(36, 'case', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 46, [36 | __Ss], [__T | __Stack]);
+yeccpars2(36, 'letrec', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 60, [36 | __Ss], [__T | __Stack]);
+yeccpars2(36, 'let', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 58, [36 | __Ss], [__T | __Stack]);
+yeccpars2(36, 'fun', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 23, [36 | __Ss], [__T | __Stack]);
+yeccpars2(36, 'do', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 52, [36 | __Ss], [__T | __Stack]);
+yeccpars2(36, 'atom', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 41, [36 | __Ss], [__T | __Stack]);
+yeccpars2(36, '#', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 34, [36 | __Ss], [__T | __Stack]);
+yeccpars2(36, '[', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 37, [36 | __Ss], [__T | __Stack]);
+yeccpars2(36, '{', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 74, [36 | __Ss], [__T | __Stack]);
+yeccpars2(36, 'string', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 69, [36 | __Ss], [__T | __Stack]);
+yeccpars2(36, 'float', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 54, [36 | __Ss], [__T | __Stack]);
+yeccpars2(36, 'integer', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 57, [36 | __Ss], [__T | __Stack]);
+yeccpars2(36, 'char', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 50, [36 | __Ss], [__T | __Stack]);
+yeccpars2(36, '<', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 36, [36 | __Ss], [__T | __Stack]);
+yeccpars2(36, '>', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 240, [36 | __Ss], [__T | __Stack]);
+yeccpars2(36, '(', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 35, [36 | __Ss], [__T | __Stack]);
+yeccpars2(36, 'var', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 30, [36 | __Ss], [__T | __Stack]);
+yeccpars2(36, _, _, _, __T, _, _) ->
+ yeccerror(__T);
+yeccpars2(37, 'receive', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 65, [37 | __Ss], [__T | __Stack]);
+yeccpars2(37, 'catch', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 48, [37 | __Ss], [__T | __Stack]);
+yeccpars2(37, 'try', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 70, [37 | __Ss], [__T | __Stack]);
+yeccpars2(37, 'primop', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 63, [37 | __Ss], [__T | __Stack]);
+yeccpars2(37, 'call', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 44, [37 | __Ss], [__T | __Stack]);
+yeccpars2(37, 'apply', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 40, [37 | __Ss], [__T | __Stack]);
+yeccpars2(37, 'case', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 46, [37 | __Ss], [__T | __Stack]);
+yeccpars2(37, 'letrec', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 60, [37 | __Ss], [__T | __Stack]);
+yeccpars2(37, 'let', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 58, [37 | __Ss], [__T | __Stack]);
+yeccpars2(37, 'fun', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 23, [37 | __Ss], [__T | __Stack]);
+yeccpars2(37, 'do', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 52, [37 | __Ss], [__T | __Stack]);
+yeccpars2(37, 'atom', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 41, [37 | __Ss], [__T | __Stack]);
+yeccpars2(37, '#', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 34, [37 | __Ss], [__T | __Stack]);
+yeccpars2(37, '[', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 37, [37 | __Ss], [__T | __Stack]);
+yeccpars2(37, '{', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 74, [37 | __Ss], [__T | __Stack]);
+yeccpars2(37, 'string', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 69, [37 | __Ss], [__T | __Stack]);
+yeccpars2(37, 'float', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 54, [37 | __Ss], [__T | __Stack]);
+yeccpars2(37, 'integer', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 57, [37 | __Ss], [__T | __Stack]);
+yeccpars2(37, 'char', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 50, [37 | __Ss], [__T | __Stack]);
+yeccpars2(37, '<', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 36, [37 | __Ss], [__T | __Stack]);
+yeccpars2(37, '(', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 35, [37 | __Ss], [__T | __Stack]);
+yeccpars2(37, 'var', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 30, [37 | __Ss], [__T | __Stack]);
+yeccpars2(37, ']', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 149, [37 | __Ss], [__T | __Stack]);
+yeccpars2(37, _, _, _, __T, _, _) ->
+ yeccerror(__T);
+yeccpars2(38, __Cat, __Ss, [__6,__5,__4,__3,__2,__1|__Stack], __T, __Ts, __Tzr) ->
+ __Val = #c_fun{vars = __3, body = __6},
+ __Nss = lists:nthtail(5, __Ss),
+ yeccpars2(yeccgoto(fun_expr, hd(__Nss)), __Cat, __Nss, [__Val | __Stack], __T, __Ts, __Tzr);
+yeccpars2(39, __Cat, __Ss, [__1|__Stack], __T, __Ts, __Tzr) ->
+ __Val = __1,
+ yeccpars2(yeccgoto(single_expression, hd(__Ss)), __Cat, __Ss, [__Val | __Stack], __T, __Ts, __Tzr);
+yeccpars2(40, 'receive', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 65, [40 | __Ss], [__T | __Stack]);
+yeccpars2(40, 'catch', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 48, [40 | __Ss], [__T | __Stack]);
+yeccpars2(40, 'try', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 70, [40 | __Ss], [__T | __Stack]);
+yeccpars2(40, 'primop', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 63, [40 | __Ss], [__T | __Stack]);
+yeccpars2(40, 'call', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 44, [40 | __Ss], [__T | __Stack]);
+yeccpars2(40, 'apply', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 40, [40 | __Ss], [__T | __Stack]);
+yeccpars2(40, 'case', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 46, [40 | __Ss], [__T | __Stack]);
+yeccpars2(40, 'letrec', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 60, [40 | __Ss], [__T | __Stack]);
+yeccpars2(40, 'let', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 58, [40 | __Ss], [__T | __Stack]);
+yeccpars2(40, 'fun', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 23, [40 | __Ss], [__T | __Stack]);
+yeccpars2(40, 'do', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 52, [40 | __Ss], [__T | __Stack]);
+yeccpars2(40, 'atom', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 41, [40 | __Ss], [__T | __Stack]);
+yeccpars2(40, '#', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 34, [40 | __Ss], [__T | __Stack]);
+yeccpars2(40, '[', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 37, [40 | __Ss], [__T | __Stack]);
+yeccpars2(40, '{', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 74, [40 | __Ss], [__T | __Stack]);
+yeccpars2(40, 'string', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 69, [40 | __Ss], [__T | __Stack]);
+yeccpars2(40, 'float', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 54, [40 | __Ss], [__T | __Stack]);
+yeccpars2(40, 'integer', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 57, [40 | __Ss], [__T | __Stack]);
+yeccpars2(40, 'char', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 50, [40 | __Ss], [__T | __Stack]);
+yeccpars2(40, '<', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 36, [40 | __Ss], [__T | __Stack]);
+yeccpars2(40, '(', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 35, [40 | __Ss], [__T | __Stack]);
+yeccpars2(40, 'var', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 30, [40 | __Ss], [__T | __Stack]);
+yeccpars2(40, _, _, _, __T, _, _) ->
+ yeccerror(__T);
+yeccpars2(41, '/', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 18, [41 | __Ss], [__T | __Stack]);
+yeccpars2(41, __Cat, __Ss, [__1|__Stack], __T, __Ts, __Tzr) ->
+ __Val = #c_atom{val = tok_val(__1)},
+ yeccpars2(yeccgoto(atomic_literal, hd(__Ss)), __Cat, __Ss, [__Val | __Stack], __T, __Ts, __Tzr);
+yeccpars2(42, __Cat, __Ss, [__1|__Stack], __T, __Ts, __Tzr) ->
+ __Val = __1,
+ yeccpars2(yeccgoto(single_expression, hd(__Ss)), __Cat, __Ss, [__Val | __Stack], __T, __Ts, __Tzr);
+yeccpars2(43, __Cat, __Ss, [__1|__Stack], __T, __Ts, __Tzr) ->
+ __Val = __1,
+ yeccpars2(yeccgoto(single_expression, hd(__Ss)), __Cat, __Ss, [__Val | __Stack], __T, __Ts, __Tzr);
+yeccpars2(44, 'receive', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 65, [44 | __Ss], [__T | __Stack]);
+yeccpars2(44, 'catch', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 48, [44 | __Ss], [__T | __Stack]);
+yeccpars2(44, 'try', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 70, [44 | __Ss], [__T | __Stack]);
+yeccpars2(44, 'primop', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 63, [44 | __Ss], [__T | __Stack]);
+yeccpars2(44, 'call', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 44, [44 | __Ss], [__T | __Stack]);
+yeccpars2(44, 'apply', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 40, [44 | __Ss], [__T | __Stack]);
+yeccpars2(44, 'case', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 46, [44 | __Ss], [__T | __Stack]);
+yeccpars2(44, 'letrec', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 60, [44 | __Ss], [__T | __Stack]);
+yeccpars2(44, 'let', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 58, [44 | __Ss], [__T | __Stack]);
+yeccpars2(44, 'fun', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 23, [44 | __Ss], [__T | __Stack]);
+yeccpars2(44, 'do', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 52, [44 | __Ss], [__T | __Stack]);
+yeccpars2(44, 'atom', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 41, [44 | __Ss], [__T | __Stack]);
+yeccpars2(44, '#', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 34, [44 | __Ss], [__T | __Stack]);
+yeccpars2(44, '[', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 37, [44 | __Ss], [__T | __Stack]);
+yeccpars2(44, '{', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 74, [44 | __Ss], [__T | __Stack]);
+yeccpars2(44, 'string', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 69, [44 | __Ss], [__T | __Stack]);
+yeccpars2(44, 'float', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 54, [44 | __Ss], [__T | __Stack]);
+yeccpars2(44, 'integer', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 57, [44 | __Ss], [__T | __Stack]);
+yeccpars2(44, 'char', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 50, [44 | __Ss], [__T | __Stack]);
+yeccpars2(44, '<', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 36, [44 | __Ss], [__T | __Stack]);
+yeccpars2(44, '(', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 35, [44 | __Ss], [__T | __Stack]);
+yeccpars2(44, 'var', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 30, [44 | __Ss], [__T | __Stack]);
+yeccpars2(44, _, _, _, __T, _, _) ->
+ yeccerror(__T);
+yeccpars2(45, __Cat, __Ss, [__1|__Stack], __T, __Ts, __Tzr) ->
+ __Val = __1,
+ yeccpars2(yeccgoto(single_expression, hd(__Ss)), __Cat, __Ss, [__Val | __Stack], __T, __Ts, __Tzr);
+yeccpars2(46, 'receive', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 65, [46 | __Ss], [__T | __Stack]);
+yeccpars2(46, 'catch', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 48, [46 | __Ss], [__T | __Stack]);
+yeccpars2(46, 'try', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 70, [46 | __Ss], [__T | __Stack]);
+yeccpars2(46, 'primop', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 63, [46 | __Ss], [__T | __Stack]);
+yeccpars2(46, 'call', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 44, [46 | __Ss], [__T | __Stack]);
+yeccpars2(46, 'apply', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 40, [46 | __Ss], [__T | __Stack]);
+yeccpars2(46, 'case', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 46, [46 | __Ss], [__T | __Stack]);
+yeccpars2(46, 'letrec', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 60, [46 | __Ss], [__T | __Stack]);
+yeccpars2(46, 'let', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 58, [46 | __Ss], [__T | __Stack]);
+yeccpars2(46, 'fun', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 23, [46 | __Ss], [__T | __Stack]);
+yeccpars2(46, 'do', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 52, [46 | __Ss], [__T | __Stack]);
+yeccpars2(46, 'atom', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 41, [46 | __Ss], [__T | __Stack]);
+yeccpars2(46, '#', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 34, [46 | __Ss], [__T | __Stack]);
+yeccpars2(46, '[', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 37, [46 | __Ss], [__T | __Stack]);
+yeccpars2(46, '{', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 74, [46 | __Ss], [__T | __Stack]);
+yeccpars2(46, 'string', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 69, [46 | __Ss], [__T | __Stack]);
+yeccpars2(46, 'float', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 54, [46 | __Ss], [__T | __Stack]);
+yeccpars2(46, 'integer', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 57, [46 | __Ss], [__T | __Stack]);
+yeccpars2(46, 'char', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 50, [46 | __Ss], [__T | __Stack]);
+yeccpars2(46, '<', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 36, [46 | __Ss], [__T | __Stack]);
+yeccpars2(46, '(', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 35, [46 | __Ss], [__T | __Stack]);
+yeccpars2(46, 'var', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 30, [46 | __Ss], [__T | __Stack]);
+yeccpars2(46, _, _, _, __T, _, _) ->
+ yeccerror(__T);
+yeccpars2(47, __Cat, __Ss, [__1|__Stack], __T, __Ts, __Tzr) ->
+ __Val = __1,
+ yeccpars2(yeccgoto(single_expression, hd(__Ss)), __Cat, __Ss, [__Val | __Stack], __T, __Ts, __Tzr);
+yeccpars2(48, 'receive', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 65, [48 | __Ss], [__T | __Stack]);
+yeccpars2(48, 'catch', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 48, [48 | __Ss], [__T | __Stack]);
+yeccpars2(48, 'try', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 70, [48 | __Ss], [__T | __Stack]);
+yeccpars2(48, 'primop', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 63, [48 | __Ss], [__T | __Stack]);
+yeccpars2(48, 'call', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 44, [48 | __Ss], [__T | __Stack]);
+yeccpars2(48, 'apply', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 40, [48 | __Ss], [__T | __Stack]);
+yeccpars2(48, 'case', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 46, [48 | __Ss], [__T | __Stack]);
+yeccpars2(48, 'letrec', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 60, [48 | __Ss], [__T | __Stack]);
+yeccpars2(48, 'let', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 58, [48 | __Ss], [__T | __Stack]);
+yeccpars2(48, 'fun', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 23, [48 | __Ss], [__T | __Stack]);
+yeccpars2(48, 'do', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 52, [48 | __Ss], [__T | __Stack]);
+yeccpars2(48, 'atom', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 41, [48 | __Ss], [__T | __Stack]);
+yeccpars2(48, '#', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 34, [48 | __Ss], [__T | __Stack]);
+yeccpars2(48, '[', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 37, [48 | __Ss], [__T | __Stack]);
+yeccpars2(48, '{', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 74, [48 | __Ss], [__T | __Stack]);
+yeccpars2(48, 'string', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 69, [48 | __Ss], [__T | __Stack]);
+yeccpars2(48, 'float', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 54, [48 | __Ss], [__T | __Stack]);
+yeccpars2(48, 'integer', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 57, [48 | __Ss], [__T | __Stack]);
+yeccpars2(48, 'char', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 50, [48 | __Ss], [__T | __Stack]);
+yeccpars2(48, '<', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 36, [48 | __Ss], [__T | __Stack]);
+yeccpars2(48, '(', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 35, [48 | __Ss], [__T | __Stack]);
+yeccpars2(48, 'var', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 30, [48 | __Ss], [__T | __Stack]);
+yeccpars2(48, _, _, _, __T, _, _) ->
+ yeccerror(__T);
+yeccpars2(49, __Cat, __Ss, [__1|__Stack], __T, __Ts, __Tzr) ->
+ __Val = __1,
+ yeccpars2(yeccgoto(single_expression, hd(__Ss)), __Cat, __Ss, [__Val | __Stack], __T, __Ts, __Tzr);
+yeccpars2(50, __Cat, __Ss, [__1|__Stack], __T, __Ts, __Tzr) ->
+ __Val = #c_char{val = tok_val(__1)},
+ yeccpars2(yeccgoto(atomic_literal, hd(__Ss)), __Cat, __Ss, [__Val | __Stack], __T, __Ts, __Tzr);
+yeccpars2(51, __Cat, __Ss, [__1|__Stack], __T, __Ts, __Tzr) ->
+ __Val = __1,
+ yeccpars2(yeccgoto(single_expression, hd(__Ss)), __Cat, __Ss, [__Val | __Stack], __T, __Ts, __Tzr);
+yeccpars2(52, 'receive', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 65, [52 | __Ss], [__T | __Stack]);
+yeccpars2(52, 'catch', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 48, [52 | __Ss], [__T | __Stack]);
+yeccpars2(52, 'try', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 70, [52 | __Ss], [__T | __Stack]);
+yeccpars2(52, 'primop', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 63, [52 | __Ss], [__T | __Stack]);
+yeccpars2(52, 'call', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 44, [52 | __Ss], [__T | __Stack]);
+yeccpars2(52, 'apply', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 40, [52 | __Ss], [__T | __Stack]);
+yeccpars2(52, 'case', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 46, [52 | __Ss], [__T | __Stack]);
+yeccpars2(52, 'letrec', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 60, [52 | __Ss], [__T | __Stack]);
+yeccpars2(52, 'let', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 58, [52 | __Ss], [__T | __Stack]);
+yeccpars2(52, 'fun', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 23, [52 | __Ss], [__T | __Stack]);
+yeccpars2(52, 'do', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 52, [52 | __Ss], [__T | __Stack]);
+yeccpars2(52, 'atom', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 41, [52 | __Ss], [__T | __Stack]);
+yeccpars2(52, '#', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 34, [52 | __Ss], [__T | __Stack]);
+yeccpars2(52, '[', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 37, [52 | __Ss], [__T | __Stack]);
+yeccpars2(52, '{', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 74, [52 | __Ss], [__T | __Stack]);
+yeccpars2(52, 'string', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 69, [52 | __Ss], [__T | __Stack]);
+yeccpars2(52, 'float', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 54, [52 | __Ss], [__T | __Stack]);
+yeccpars2(52, 'integer', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 57, [52 | __Ss], [__T | __Stack]);
+yeccpars2(52, 'char', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 50, [52 | __Ss], [__T | __Stack]);
+yeccpars2(52, '<', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 36, [52 | __Ss], [__T | __Stack]);
+yeccpars2(52, '(', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 35, [52 | __Ss], [__T | __Stack]);
+yeccpars2(52, 'var', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 30, [52 | __Ss], [__T | __Stack]);
+yeccpars2(52, _, _, _, __T, _, _) ->
+ yeccerror(__T);
+yeccpars2(53, __Cat, __Ss, [__1|__Stack], __T, __Ts, __Tzr) ->
+ __Val = __1,
+ yeccpars2(yeccgoto(anno_expression, hd(__Ss)), __Cat, __Ss, [__Val | __Stack], __T, __Ts, __Tzr);
+yeccpars2(54, __Cat, __Ss, [__1|__Stack], __T, __Ts, __Tzr) ->
+ __Val = #c_float{val = tok_val(__1)},
+ yeccpars2(yeccgoto(atomic_literal, hd(__Ss)), __Cat, __Ss, [__Val | __Stack], __T, __Ts, __Tzr);
+yeccpars2(55, __Cat, __Ss, [__1|__Stack], __T, __Ts, __Tzr) ->
+ __Val = __1,
+ yeccpars2(yeccgoto(single_expression, hd(__Ss)), __Cat, __Ss, [__Val | __Stack], __T, __Ts, __Tzr);
+yeccpars2(56, __Cat, __Ss, [__1|__Stack], __T, __Ts, __Tzr) ->
+ __Val = __1,
+ yeccpars2(yeccgoto(single_expression, hd(__Ss)), __Cat, __Ss, [__Val | __Stack], __T, __Ts, __Tzr);
+yeccpars2(57, __Cat, __Ss, [__1|__Stack], __T, __Ts, __Tzr) ->
+ __Val = #c_int{val = tok_val(__1)},
+ yeccpars2(yeccgoto(atomic_literal, hd(__Ss)), __Cat, __Ss, [__Val | __Stack], __T, __Ts, __Tzr);
+yeccpars2(58, '<', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 83, [58 | __Ss], [__T | __Stack]);
+yeccpars2(58, '(', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 26, [58 | __Ss], [__T | __Stack]);
+yeccpars2(58, 'var', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 30, [58 | __Ss], [__T | __Stack]);
+yeccpars2(58, _, _, _, __T, _, _) ->
+ yeccerror(__T);
+yeccpars2(59, __Cat, __Ss, [__1|__Stack], __T, __Ts, __Tzr) ->
+ __Val = __1,
+ yeccpars2(yeccgoto(single_expression, hd(__Ss)), __Cat, __Ss, [__Val | __Stack], __T, __Ts, __Tzr);
+yeccpars2(60, '(', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 9, [60 | __Ss], [__T | __Stack]);
+yeccpars2(60, 'atom', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 11, [60 | __Ss], [__T | __Stack]);
+yeccpars2(60, __Cat, __Ss, __Stack, __T, __Ts, __Tzr) ->
+ __Val = [],
+ yeccpars2(210, __Cat, [60 | __Ss], [__Val | __Stack], __T, __Ts, __Tzr);
+yeccpars2(61, __Cat, __Ss, [__1|__Stack], __T, __Ts, __Tzr) ->
+ __Val = __1,
+ yeccpars2(yeccgoto(single_expression, hd(__Ss)), __Cat, __Ss, [__Val | __Stack], __T, __Ts, __Tzr);
+yeccpars2(62, __Cat, __Ss, [__1|__Stack], __T, __Ts, __Tzr) ->
+ __Val = #c_nil{},
+ yeccpars2(yeccgoto(atomic_literal, hd(__Ss)), __Cat, __Ss, [__Val | __Stack], __T, __Ts, __Tzr);
+yeccpars2(63, 'atom', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 208, [63 | __Ss], [__T | __Stack]);
+yeccpars2(63, _, _, _, __T, _, _) ->
+ yeccerror(__T);
+yeccpars2(64, __Cat, __Ss, [__1|__Stack], __T, __Ts, __Tzr) ->
+ __Val = __1,
+ yeccpars2(yeccgoto(single_expression, hd(__Ss)), __Cat, __Ss, [__Val | __Stack], __T, __Ts, __Tzr);
+yeccpars2(65, 'after', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 99, [65 | __Ss], [__T | __Stack]);
+yeccpars2(65, '<', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 97, [65 | __Ss], [__T | __Stack]);
+yeccpars2(65, '(', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 96, [65 | __Ss], [__T | __Stack]);
+yeccpars2(65, 'string', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 69, [65 | __Ss], [__T | __Stack]);
+yeccpars2(65, 'atom', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 104, [65 | __Ss], [__T | __Stack]);
+yeccpars2(65, 'float', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 54, [65 | __Ss], [__T | __Stack]);
+yeccpars2(65, 'integer', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 57, [65 | __Ss], [__T | __Stack]);
+yeccpars2(65, 'char', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 50, [65 | __Ss], [__T | __Stack]);
+yeccpars2(65, 'var', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 30, [65 | __Ss], [__T | __Stack]);
+yeccpars2(65, '#', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 95, [65 | __Ss], [__T | __Stack]);
+yeccpars2(65, '[', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 98, [65 | __Ss], [__T | __Stack]);
+yeccpars2(65, '{', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 114, [65 | __Ss], [__T | __Stack]);
+yeccpars2(65, _, _, _, __T, _, _) ->
+ yeccerror(__T);
+yeccpars2(66, __Cat, __Ss, [__1|__Stack], __T, __Ts, __Tzr) ->
+ __Val = __1,
+ yeccpars2(yeccgoto(single_expression, hd(__Ss)), __Cat, __Ss, [__Val | __Stack], __T, __Ts, __Tzr);
+yeccpars2(67, __Cat, __Ss, [__1|__Stack], __T, __Ts, __Tzr) ->
+ __Val = __1,
+ yeccpars2(yeccgoto(single_expression, hd(__Ss)), __Cat, __Ss, [__Val | __Stack], __T, __Ts, __Tzr);
+yeccpars2(68, __Cat, __Ss, [__1|__Stack], __T, __Ts, __Tzr) ->
+ __Val = __1,
+ yeccpars2(yeccgoto(expression, hd(__Ss)), __Cat, __Ss, [__Val | __Stack], __T, __Ts, __Tzr);
+yeccpars2(69, __Cat, __Ss, [__1|__Stack], __T, __Ts, __Tzr) ->
+ __Val = #c_string{val = tok_val(__1)},
+ yeccpars2(yeccgoto(atomic_literal, hd(__Ss)), __Cat, __Ss, [__Val | __Stack], __T, __Ts, __Tzr);
+yeccpars2(70, 'receive', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 65, [70 | __Ss], [__T | __Stack]);
+yeccpars2(70, 'catch', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 48, [70 | __Ss], [__T | __Stack]);
+yeccpars2(70, 'try', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 70, [70 | __Ss], [__T | __Stack]);
+yeccpars2(70, 'primop', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 63, [70 | __Ss], [__T | __Stack]);
+yeccpars2(70, 'call', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 44, [70 | __Ss], [__T | __Stack]);
+yeccpars2(70, 'apply', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 40, [70 | __Ss], [__T | __Stack]);
+yeccpars2(70, 'case', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 46, [70 | __Ss], [__T | __Stack]);
+yeccpars2(70, 'letrec', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 60, [70 | __Ss], [__T | __Stack]);
+yeccpars2(70, 'let', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 58, [70 | __Ss], [__T | __Stack]);
+yeccpars2(70, 'fun', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 23, [70 | __Ss], [__T | __Stack]);
+yeccpars2(70, 'do', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 52, [70 | __Ss], [__T | __Stack]);
+yeccpars2(70, 'atom', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 41, [70 | __Ss], [__T | __Stack]);
+yeccpars2(70, '#', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 34, [70 | __Ss], [__T | __Stack]);
+yeccpars2(70, '[', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 37, [70 | __Ss], [__T | __Stack]);
+yeccpars2(70, '{', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 74, [70 | __Ss], [__T | __Stack]);
+yeccpars2(70, 'string', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 69, [70 | __Ss], [__T | __Stack]);
+yeccpars2(70, 'float', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 54, [70 | __Ss], [__T | __Stack]);
+yeccpars2(70, 'integer', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 57, [70 | __Ss], [__T | __Stack]);
+yeccpars2(70, 'char', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 50, [70 | __Ss], [__T | __Stack]);
+yeccpars2(70, '<', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 36, [70 | __Ss], [__T | __Stack]);
+yeccpars2(70, '(', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 35, [70 | __Ss], [__T | __Stack]);
+yeccpars2(70, 'var', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 30, [70 | __Ss], [__T | __Stack]);
+yeccpars2(70, _, _, _, __T, _, _) ->
+ yeccerror(__T);
+yeccpars2(71, __Cat, __Ss, [__1|__Stack], __T, __Ts, __Tzr) ->
+ __Val = __1,
+ yeccpars2(yeccgoto(single_expression, hd(__Ss)), __Cat, __Ss, [__Val | __Stack], __T, __Ts, __Tzr);
+yeccpars2(72, __Cat, __Ss, [__1|__Stack], __T, __Ts, __Tzr) ->
+ __Val = __1,
+ yeccpars2(yeccgoto(single_expression, hd(__Ss)), __Cat, __Ss, [__Val | __Stack], __T, __Ts, __Tzr);
+yeccpars2(73, __Cat, __Ss, [__1|__Stack], __T, __Ts, __Tzr) ->
+ __Val = __1,
+ yeccpars2(yeccgoto(single_expression, hd(__Ss)), __Cat, __Ss, [__Val | __Stack], __T, __Ts, __Tzr);
+yeccpars2(74, 'receive', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 65, [74 | __Ss], [__T | __Stack]);
+yeccpars2(74, 'catch', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 48, [74 | __Ss], [__T | __Stack]);
+yeccpars2(74, 'try', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 70, [74 | __Ss], [__T | __Stack]);
+yeccpars2(74, 'primop', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 63, [74 | __Ss], [__T | __Stack]);
+yeccpars2(74, 'call', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 44, [74 | __Ss], [__T | __Stack]);
+yeccpars2(74, 'apply', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 40, [74 | __Ss], [__T | __Stack]);
+yeccpars2(74, 'case', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 46, [74 | __Ss], [__T | __Stack]);
+yeccpars2(74, 'letrec', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 60, [74 | __Ss], [__T | __Stack]);
+yeccpars2(74, 'let', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 58, [74 | __Ss], [__T | __Stack]);
+yeccpars2(74, 'fun', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 23, [74 | __Ss], [__T | __Stack]);
+yeccpars2(74, 'do', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 52, [74 | __Ss], [__T | __Stack]);
+yeccpars2(74, 'atom', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 41, [74 | __Ss], [__T | __Stack]);
+yeccpars2(74, '#', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 34, [74 | __Ss], [__T | __Stack]);
+yeccpars2(74, '[', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 37, [74 | __Ss], [__T | __Stack]);
+yeccpars2(74, '{', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 74, [74 | __Ss], [__T | __Stack]);
+yeccpars2(74, '}', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 77, [74 | __Ss], [__T | __Stack]);
+yeccpars2(74, 'string', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 69, [74 | __Ss], [__T | __Stack]);
+yeccpars2(74, 'float', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 54, [74 | __Ss], [__T | __Stack]);
+yeccpars2(74, 'integer', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 57, [74 | __Ss], [__T | __Stack]);
+yeccpars2(74, 'char', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 50, [74 | __Ss], [__T | __Stack]);
+yeccpars2(74, '<', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 36, [74 | __Ss], [__T | __Stack]);
+yeccpars2(74, '(', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 35, [74 | __Ss], [__T | __Stack]);
+yeccpars2(74, 'var', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 30, [74 | __Ss], [__T | __Stack]);
+yeccpars2(74, _, _, _, __T, _, _) ->
+ yeccerror(__T);
+yeccpars2(75, ',', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 79, [75 | __Ss], [__T | __Stack]);
+yeccpars2(75, __Cat, __Ss, [__1|__Stack], __T, __Ts, __Tzr) ->
+ __Val = [__1],
+ yeccpars2(yeccgoto(anno_expressions, hd(__Ss)), __Cat, __Ss, [__Val | __Stack], __T, __Ts, __Tzr);
+yeccpars2(76, '}', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 78, [76 | __Ss], [__T | __Stack]);
+yeccpars2(76, _, _, _, __T, _, _) ->
+ yeccerror(__T);
+yeccpars2(77, __Cat, __Ss, [__2,__1|__Stack], __T, __Ts, __Tzr) ->
+ __Val = #c_tuple{es = []},
+ __Nss = lists:nthtail(1, __Ss),
+ yeccpars2(yeccgoto(tuple, hd(__Nss)), __Cat, __Nss, [__Val | __Stack], __T, __Ts, __Tzr);
+yeccpars2(78, __Cat, __Ss, [__3,__2,__1|__Stack], __T, __Ts, __Tzr) ->
+ __Val = #c_tuple{es = __2},
+ __Nss = lists:nthtail(2, __Ss),
+ yeccpars2(yeccgoto(tuple, hd(__Nss)), __Cat, __Nss, [__Val | __Stack], __T, __Ts, __Tzr);
+yeccpars2(79, 'receive', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 65, [79 | __Ss], [__T | __Stack]);
+yeccpars2(79, 'catch', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 48, [79 | __Ss], [__T | __Stack]);
+yeccpars2(79, 'try', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 70, [79 | __Ss], [__T | __Stack]);
+yeccpars2(79, 'primop', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 63, [79 | __Ss], [__T | __Stack]);
+yeccpars2(79, 'call', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 44, [79 | __Ss], [__T | __Stack]);
+yeccpars2(79, 'apply', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 40, [79 | __Ss], [__T | __Stack]);
+yeccpars2(79, 'case', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 46, [79 | __Ss], [__T | __Stack]);
+yeccpars2(79, 'letrec', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 60, [79 | __Ss], [__T | __Stack]);
+yeccpars2(79, 'let', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 58, [79 | __Ss], [__T | __Stack]);
+yeccpars2(79, 'fun', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 23, [79 | __Ss], [__T | __Stack]);
+yeccpars2(79, 'do', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 52, [79 | __Ss], [__T | __Stack]);
+yeccpars2(79, 'atom', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 41, [79 | __Ss], [__T | __Stack]);
+yeccpars2(79, '#', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 34, [79 | __Ss], [__T | __Stack]);
+yeccpars2(79, '[', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 37, [79 | __Ss], [__T | __Stack]);
+yeccpars2(79, '{', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 74, [79 | __Ss], [__T | __Stack]);
+yeccpars2(79, 'string', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 69, [79 | __Ss], [__T | __Stack]);
+yeccpars2(79, 'float', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 54, [79 | __Ss], [__T | __Stack]);
+yeccpars2(79, 'integer', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 57, [79 | __Ss], [__T | __Stack]);
+yeccpars2(79, 'char', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 50, [79 | __Ss], [__T | __Stack]);
+yeccpars2(79, '<', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 36, [79 | __Ss], [__T | __Stack]);
+yeccpars2(79, '(', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 35, [79 | __Ss], [__T | __Stack]);
+yeccpars2(79, 'var', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 30, [79 | __Ss], [__T | __Stack]);
+yeccpars2(79, _, _, _, __T, _, _) ->
+ yeccerror(__T);
+yeccpars2(80, __Cat, __Ss, [__3,__2,__1|__Stack], __T, __Ts, __Tzr) ->
+ __Val = [__1|__3],
+ __Nss = lists:nthtail(2, __Ss),
+ yeccpars2(yeccgoto(anno_expressions, hd(__Nss)), __Cat, __Nss, [__Val | __Stack], __T, __Ts, __Tzr);
+yeccpars2(81, 'of', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 82, [81 | __Ss], [__T | __Stack]);
+yeccpars2(81, _, _, _, __T, _, _) ->
+ yeccerror(__T);
+yeccpars2(82, '<', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 83, [82 | __Ss], [__T | __Stack]);
+yeccpars2(82, '(', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 26, [82 | __Ss], [__T | __Stack]);
+yeccpars2(82, 'var', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 30, [82 | __Ss], [__T | __Stack]);
+yeccpars2(82, _, _, _, __T, _, _) ->
+ yeccerror(__T);
+yeccpars2(83, '>', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 92, [83 | __Ss], [__T | __Stack]);
+yeccpars2(83, '(', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 26, [83 | __Ss], [__T | __Stack]);
+yeccpars2(83, 'var', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 30, [83 | __Ss], [__T | __Stack]);
+yeccpars2(83, _, _, _, __T, _, _) ->
+ yeccerror(__T);
+yeccpars2(84, __Cat, __Ss, [__1|__Stack], __T, __Ts, __Tzr) ->
+ __Val = [__1],
+ yeccpars2(yeccgoto(let_vars, hd(__Ss)), __Cat, __Ss, [__Val | __Stack], __T, __Ts, __Tzr);
+yeccpars2(85, '->', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 86, [85 | __Ss], [__T | __Stack]);
+yeccpars2(85, _, _, _, __T, _, _) ->
+ yeccerror(__T);
+yeccpars2(86, 'receive', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 65, [86 | __Ss], [__T | __Stack]);
+yeccpars2(86, 'catch', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 48, [86 | __Ss], [__T | __Stack]);
+yeccpars2(86, 'try', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 70, [86 | __Ss], [__T | __Stack]);
+yeccpars2(86, 'primop', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 63, [86 | __Ss], [__T | __Stack]);
+yeccpars2(86, 'call', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 44, [86 | __Ss], [__T | __Stack]);
+yeccpars2(86, 'apply', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 40, [86 | __Ss], [__T | __Stack]);
+yeccpars2(86, 'case', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 46, [86 | __Ss], [__T | __Stack]);
+yeccpars2(86, 'letrec', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 60, [86 | __Ss], [__T | __Stack]);
+yeccpars2(86, 'let', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 58, [86 | __Ss], [__T | __Stack]);
+yeccpars2(86, 'fun', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 23, [86 | __Ss], [__T | __Stack]);
+yeccpars2(86, 'do', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 52, [86 | __Ss], [__T | __Stack]);
+yeccpars2(86, 'atom', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 41, [86 | __Ss], [__T | __Stack]);
+yeccpars2(86, '#', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 34, [86 | __Ss], [__T | __Stack]);
+yeccpars2(86, '[', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 37, [86 | __Ss], [__T | __Stack]);
+yeccpars2(86, '{', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 74, [86 | __Ss], [__T | __Stack]);
+yeccpars2(86, 'string', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 69, [86 | __Ss], [__T | __Stack]);
+yeccpars2(86, 'float', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 54, [86 | __Ss], [__T | __Stack]);
+yeccpars2(86, 'integer', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 57, [86 | __Ss], [__T | __Stack]);
+yeccpars2(86, 'char', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 50, [86 | __Ss], [__T | __Stack]);
+yeccpars2(86, '<', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 36, [86 | __Ss], [__T | __Stack]);
+yeccpars2(86, '(', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 35, [86 | __Ss], [__T | __Stack]);
+yeccpars2(86, 'var', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 30, [86 | __Ss], [__T | __Stack]);
+yeccpars2(86, _, _, _, __T, _, _) ->
+ yeccerror(__T);
+yeccpars2(87, 'catch', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 88, [87 | __Ss], [__T | __Stack]);
+yeccpars2(87, _, _, _, __T, _, _) ->
+ yeccerror(__T);
+yeccpars2(88, '<', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 83, [88 | __Ss], [__T | __Stack]);
+yeccpars2(88, '(', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 26, [88 | __Ss], [__T | __Stack]);
+yeccpars2(88, 'var', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 30, [88 | __Ss], [__T | __Stack]);
+yeccpars2(88, _, _, _, __T, _, _) ->
+ yeccerror(__T);
+yeccpars2(89, '->', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 90, [89 | __Ss], [__T | __Stack]);
+yeccpars2(89, _, _, _, __T, _, _) ->
+ yeccerror(__T);
+yeccpars2(90, 'receive', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 65, [90 | __Ss], [__T | __Stack]);
+yeccpars2(90, 'catch', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 48, [90 | __Ss], [__T | __Stack]);
+yeccpars2(90, 'try', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 70, [90 | __Ss], [__T | __Stack]);
+yeccpars2(90, 'primop', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 63, [90 | __Ss], [__T | __Stack]);
+yeccpars2(90, 'call', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 44, [90 | __Ss], [__T | __Stack]);
+yeccpars2(90, 'apply', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 40, [90 | __Ss], [__T | __Stack]);
+yeccpars2(90, 'case', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 46, [90 | __Ss], [__T | __Stack]);
+yeccpars2(90, 'letrec', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 60, [90 | __Ss], [__T | __Stack]);
+yeccpars2(90, 'let', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 58, [90 | __Ss], [__T | __Stack]);
+yeccpars2(90, 'fun', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 23, [90 | __Ss], [__T | __Stack]);
+yeccpars2(90, 'do', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 52, [90 | __Ss], [__T | __Stack]);
+yeccpars2(90, 'atom', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 41, [90 | __Ss], [__T | __Stack]);
+yeccpars2(90, '#', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 34, [90 | __Ss], [__T | __Stack]);
+yeccpars2(90, '[', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 37, [90 | __Ss], [__T | __Stack]);
+yeccpars2(90, '{', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 74, [90 | __Ss], [__T | __Stack]);
+yeccpars2(90, 'string', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 69, [90 | __Ss], [__T | __Stack]);
+yeccpars2(90, 'float', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 54, [90 | __Ss], [__T | __Stack]);
+yeccpars2(90, 'integer', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 57, [90 | __Ss], [__T | __Stack]);
+yeccpars2(90, 'char', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 50, [90 | __Ss], [__T | __Stack]);
+yeccpars2(90, '<', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 36, [90 | __Ss], [__T | __Stack]);
+yeccpars2(90, '(', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 35, [90 | __Ss], [__T | __Stack]);
+yeccpars2(90, 'var', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 30, [90 | __Ss], [__T | __Stack]);
+yeccpars2(90, _, _, _, __T, _, _) ->
+ yeccerror(__T);
+yeccpars2(91, __Cat, __Ss, [__10,__9,__8,__7,__6,__5,__4,__3,__2,__1|__Stack], __T, __Ts, __Tzr) ->
+ __Val = if length(__8) == 2 -> #c_try{arg = __2, vars = __4, body = __6, evars = __8, handler = __10}; true -> return_error(tok_line(__7),"expected 2 exception variables in 'try'") end,
+ __Nss = lists:nthtail(9, __Ss),
+ yeccpars2(yeccgoto(try_expr, hd(__Nss)), __Cat, __Nss, [__Val | __Stack], __T, __Ts, __Tzr);
+yeccpars2(92, __Cat, __Ss, [__2,__1|__Stack], __T, __Ts, __Tzr) ->
+ __Val = [],
+ __Nss = lists:nthtail(1, __Ss),
+ yeccpars2(yeccgoto(let_vars, hd(__Nss)), __Cat, __Nss, [__Val | __Stack], __T, __Ts, __Tzr);
+yeccpars2(93, '>', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 94, [93 | __Ss], [__T | __Stack]);
+yeccpars2(93, _, _, _, __T, _, _) ->
+ yeccerror(__T);
+yeccpars2(94, __Cat, __Ss, [__3,__2,__1|__Stack], __T, __Ts, __Tzr) ->
+ __Val = __2,
+ __Nss = lists:nthtail(2, __Ss),
+ yeccpars2(yeccgoto(let_vars, hd(__Nss)), __Cat, __Nss, [__Val | __Stack], __T, __Ts, __Tzr);
+yeccpars2(95, '{', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 190, [95 | __Ss], [__T | __Stack]);
+yeccpars2(95, _, _, _, __T, _, _) ->
+ yeccerror(__T);
+yeccpars2(96, '<', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 97, [96 | __Ss], [__T | __Stack]);
+yeccpars2(96, 'string', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 69, [96 | __Ss], [__T | __Stack]);
+yeccpars2(96, 'atom', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 104, [96 | __Ss], [__T | __Stack]);
+yeccpars2(96, 'float', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 54, [96 | __Ss], [__T | __Stack]);
+yeccpars2(96, 'integer', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 57, [96 | __Ss], [__T | __Stack]);
+yeccpars2(96, 'char', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 50, [96 | __Ss], [__T | __Stack]);
+yeccpars2(96, '(', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 115, [96 | __Ss], [__T | __Stack]);
+yeccpars2(96, 'var', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 30, [96 | __Ss], [__T | __Stack]);
+yeccpars2(96, '#', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 95, [96 | __Ss], [__T | __Stack]);
+yeccpars2(96, '[', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 98, [96 | __Ss], [__T | __Stack]);
+yeccpars2(96, '{', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 114, [96 | __Ss], [__T | __Stack]);
+yeccpars2(96, _, _, _, __T, _, _) ->
+ yeccerror(__T);
+yeccpars2(97, '>', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 182, [97 | __Ss], [__T | __Stack]);
+yeccpars2(97, 'string', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 69, [97 | __Ss], [__T | __Stack]);
+yeccpars2(97, 'atom', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 104, [97 | __Ss], [__T | __Stack]);
+yeccpars2(97, 'float', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 54, [97 | __Ss], [__T | __Stack]);
+yeccpars2(97, 'integer', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 57, [97 | __Ss], [__T | __Stack]);
+yeccpars2(97, 'char', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 50, [97 | __Ss], [__T | __Stack]);
+yeccpars2(97, '(', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 115, [97 | __Ss], [__T | __Stack]);
+yeccpars2(97, 'var', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 30, [97 | __Ss], [__T | __Stack]);
+yeccpars2(97, '#', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 95, [97 | __Ss], [__T | __Stack]);
+yeccpars2(97, '[', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 98, [97 | __Ss], [__T | __Stack]);
+yeccpars2(97, '{', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 114, [97 | __Ss], [__T | __Stack]);
+yeccpars2(97, _, _, _, __T, _, _) ->
+ yeccerror(__T);
+yeccpars2(98, 'string', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 69, [98 | __Ss], [__T | __Stack]);
+yeccpars2(98, 'atom', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 104, [98 | __Ss], [__T | __Stack]);
+yeccpars2(98, 'float', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 54, [98 | __Ss], [__T | __Stack]);
+yeccpars2(98, 'integer', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 57, [98 | __Ss], [__T | __Stack]);
+yeccpars2(98, 'char', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 50, [98 | __Ss], [__T | __Stack]);
+yeccpars2(98, '(', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 115, [98 | __Ss], [__T | __Stack]);
+yeccpars2(98, 'var', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 30, [98 | __Ss], [__T | __Stack]);
+yeccpars2(98, '#', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 95, [98 | __Ss], [__T | __Stack]);
+yeccpars2(98, '[', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 98, [98 | __Ss], [__T | __Stack]);
+yeccpars2(98, '{', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 114, [98 | __Ss], [__T | __Stack]);
+yeccpars2(98, ']', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 149, [98 | __Ss], [__T | __Stack]);
+yeccpars2(98, _, _, _, __T, _, _) ->
+ yeccerror(__T);
+yeccpars2(99, 'receive', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 65, [99 | __Ss], [__T | __Stack]);
+yeccpars2(99, 'catch', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 48, [99 | __Ss], [__T | __Stack]);
+yeccpars2(99, 'try', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 70, [99 | __Ss], [__T | __Stack]);
+yeccpars2(99, 'primop', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 63, [99 | __Ss], [__T | __Stack]);
+yeccpars2(99, 'call', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 44, [99 | __Ss], [__T | __Stack]);
+yeccpars2(99, 'apply', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 40, [99 | __Ss], [__T | __Stack]);
+yeccpars2(99, 'case', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 46, [99 | __Ss], [__T | __Stack]);
+yeccpars2(99, 'letrec', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 60, [99 | __Ss], [__T | __Stack]);
+yeccpars2(99, 'let', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 58, [99 | __Ss], [__T | __Stack]);
+yeccpars2(99, 'fun', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 23, [99 | __Ss], [__T | __Stack]);
+yeccpars2(99, 'do', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 52, [99 | __Ss], [__T | __Stack]);
+yeccpars2(99, 'atom', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 41, [99 | __Ss], [__T | __Stack]);
+yeccpars2(99, '#', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 34, [99 | __Ss], [__T | __Stack]);
+yeccpars2(99, '[', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 37, [99 | __Ss], [__T | __Stack]);
+yeccpars2(99, '{', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 74, [99 | __Ss], [__T | __Stack]);
+yeccpars2(99, 'string', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 69, [99 | __Ss], [__T | __Stack]);
+yeccpars2(99, 'float', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 54, [99 | __Ss], [__T | __Stack]);
+yeccpars2(99, 'integer', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 57, [99 | __Ss], [__T | __Stack]);
+yeccpars2(99, 'char', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 50, [99 | __Ss], [__T | __Stack]);
+yeccpars2(99, '<', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 36, [99 | __Ss], [__T | __Stack]);
+yeccpars2(99, '(', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 35, [99 | __Ss], [__T | __Stack]);
+yeccpars2(99, 'var', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 30, [99 | __Ss], [__T | __Stack]);
+yeccpars2(99, _, _, _, __T, _, _) ->
+ yeccerror(__T);
+yeccpars2(100, '<', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 97, [100 | __Ss], [__T | __Stack]);
+yeccpars2(100, '(', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 96, [100 | __Ss], [__T | __Stack]);
+yeccpars2(100, 'string', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 69, [100 | __Ss], [__T | __Stack]);
+yeccpars2(100, 'atom', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 104, [100 | __Ss], [__T | __Stack]);
+yeccpars2(100, 'float', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 54, [100 | __Ss], [__T | __Stack]);
+yeccpars2(100, 'integer', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 57, [100 | __Ss], [__T | __Stack]);
+yeccpars2(100, 'char', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 50, [100 | __Ss], [__T | __Stack]);
+yeccpars2(100, 'var', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 30, [100 | __Ss], [__T | __Stack]);
+yeccpars2(100, '#', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 95, [100 | __Ss], [__T | __Stack]);
+yeccpars2(100, '[', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 98, [100 | __Ss], [__T | __Stack]);
+yeccpars2(100, '{', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 114, [100 | __Ss], [__T | __Stack]);
+yeccpars2(100, __Cat, __Ss, [__1|__Stack], __T, __Ts, __Tzr) ->
+ __Val = [__1],
+ yeccpars2(yeccgoto(anno_clauses, hd(__Ss)), __Cat, __Ss, [__Val | __Stack], __T, __Ts, __Tzr);
+yeccpars2(101, 'after', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 99, [101 | __Ss], [__T | __Stack]);
+yeccpars2(101, _, _, _, __T, _, _) ->
+ yeccerror(__T);
+yeccpars2(102, __Cat, __Ss, [__1|__Stack], __T, __Ts, __Tzr) ->
+ __Val = [__1],
+ yeccpars2(yeccgoto(clause_pattern, hd(__Ss)), __Cat, __Ss, [__Val | __Stack], __T, __Ts, __Tzr);
+yeccpars2(103, '=', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 162, [103 | __Ss], [__T | __Stack]);
+yeccpars2(103, __Cat, __Ss, [__1|__Stack], __T, __Ts, __Tzr) ->
+ __Val = __1,
+ yeccpars2(yeccgoto(anno_pattern, hd(__Ss)), __Cat, __Ss, [__Val | __Stack], __T, __Ts, __Tzr);
+yeccpars2(104, __Cat, __Ss, [__1|__Stack], __T, __Ts, __Tzr) ->
+ __Val = #c_atom{val = tok_val(__1)},
+ yeccpars2(yeccgoto(atomic_literal, hd(__Ss)), __Cat, __Ss, [__Val | __Stack], __T, __Ts, __Tzr);
+yeccpars2(105, __Cat, __Ss, [__1|__Stack], __T, __Ts, __Tzr) ->
+ __Val = __1,
+ yeccpars2(yeccgoto(atomic_pattern, hd(__Ss)), __Cat, __Ss, [__Val | __Stack], __T, __Ts, __Tzr);
+yeccpars2(106, __Cat, __Ss, [__1|__Stack], __T, __Ts, __Tzr) ->
+ __Val = __1,
+ yeccpars2(yeccgoto(other_pattern, hd(__Ss)), __Cat, __Ss, [__Val | __Stack], __T, __Ts, __Tzr);
+yeccpars2(107, __Cat, __Ss, [__1|__Stack], __T, __Ts, __Tzr) ->
+ __Val = __1,
+ yeccpars2(yeccgoto(other_pattern, hd(__Ss)), __Cat, __Ss, [__Val | __Stack], __T, __Ts, __Tzr);
+yeccpars2(108, __Cat, __Ss, [__1|__Stack], __T, __Ts, __Tzr) ->
+ __Val = __1,
+ yeccpars2(yeccgoto(anno_clause, hd(__Ss)), __Cat, __Ss, [__Val | __Stack], __T, __Ts, __Tzr);
+yeccpars2(109, 'when', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 164, [109 | __Ss], [__T | __Stack]);
+yeccpars2(109, _, _, _, __T, _, _) ->
+ yeccerror(__T);
+yeccpars2(110, __Cat, __Ss, [__1|__Stack], __T, __Ts, __Tzr) ->
+ __Val = __1,
+ yeccpars2(yeccgoto(other_pattern, hd(__Ss)), __Cat, __Ss, [__Val | __Stack], __T, __Ts, __Tzr);
+yeccpars2(111, __Cat, __Ss, [__1|__Stack], __T, __Ts, __Tzr) ->
+ __Val = __1,
+ yeccpars2(yeccgoto(anno_pattern, hd(__Ss)), __Cat, __Ss, [__Val | __Stack], __T, __Ts, __Tzr);
+yeccpars2(112, __Cat, __Ss, [__2,__1|__Stack], __T, __Ts, __Tzr) ->
+ __Val = begin
+ {T,A} = __2, #c_receive{clauses = [], timeout = T, action = A}
+ end,
+ __Nss = lists:nthtail(1, __Ss),
+ yeccpars2(yeccgoto(receive_expr, hd(__Nss)), __Cat, __Nss, [__Val | __Stack], __T, __Ts, __Tzr);
+yeccpars2(113, __Cat, __Ss, [__1|__Stack], __T, __Ts, __Tzr) ->
+ __Val = __1,
+ yeccpars2(yeccgoto(other_pattern, hd(__Ss)), __Cat, __Ss, [__Val | __Stack], __T, __Ts, __Tzr);
+yeccpars2(114, 'string', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 69, [114 | __Ss], [__T | __Stack]);
+yeccpars2(114, 'atom', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 104, [114 | __Ss], [__T | __Stack]);
+yeccpars2(114, 'float', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 54, [114 | __Ss], [__T | __Stack]);
+yeccpars2(114, 'integer', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 57, [114 | __Ss], [__T | __Stack]);
+yeccpars2(114, 'char', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 50, [114 | __Ss], [__T | __Stack]);
+yeccpars2(114, '(', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 115, [114 | __Ss], [__T | __Stack]);
+yeccpars2(114, 'var', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 30, [114 | __Ss], [__T | __Stack]);
+yeccpars2(114, '#', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 95, [114 | __Ss], [__T | __Stack]);
+yeccpars2(114, '[', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 98, [114 | __Ss], [__T | __Stack]);
+yeccpars2(114, '{', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 114, [114 | __Ss], [__T | __Stack]);
+yeccpars2(114, '}', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 118, [114 | __Ss], [__T | __Stack]);
+yeccpars2(114, _, _, _, __T, _, _) ->
+ yeccerror(__T);
+yeccpars2(115, 'string', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 69, [115 | __Ss], [__T | __Stack]);
+yeccpars2(115, 'atom', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 104, [115 | __Ss], [__T | __Stack]);
+yeccpars2(115, 'float', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 54, [115 | __Ss], [__T | __Stack]);
+yeccpars2(115, 'integer', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 57, [115 | __Ss], [__T | __Stack]);
+yeccpars2(115, 'char', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 50, [115 | __Ss], [__T | __Stack]);
+yeccpars2(115, '(', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 26, [115 | __Ss], [__T | __Stack]);
+yeccpars2(115, 'var', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 30, [115 | __Ss], [__T | __Stack]);
+yeccpars2(115, '#', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 95, [115 | __Ss], [__T | __Stack]);
+yeccpars2(115, '[', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 98, [115 | __Ss], [__T | __Stack]);
+yeccpars2(115, '{', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 114, [115 | __Ss], [__T | __Stack]);
+yeccpars2(115, _, _, _, __T, _, _) ->
+ yeccerror(__T);
+yeccpars2(116, ',', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 120, [116 | __Ss], [__T | __Stack]);
+yeccpars2(116, __Cat, __Ss, [__1|__Stack], __T, __Ts, __Tzr) ->
+ __Val = [__1],
+ yeccpars2(yeccgoto(anno_patterns, hd(__Ss)), __Cat, __Ss, [__Val | __Stack], __T, __Ts, __Tzr);
+yeccpars2(117, '}', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 119, [117 | __Ss], [__T | __Stack]);
+yeccpars2(117, _, _, _, __T, _, _) ->
+ yeccerror(__T);
+yeccpars2(118, __Cat, __Ss, [__2,__1|__Stack], __T, __Ts, __Tzr) ->
+ __Val = #c_tuple{es = []},
+ __Nss = lists:nthtail(1, __Ss),
+ yeccpars2(yeccgoto(tuple_pattern, hd(__Nss)), __Cat, __Nss, [__Val | __Stack], __T, __Ts, __Tzr);
+yeccpars2(119, __Cat, __Ss, [__3,__2,__1|__Stack], __T, __Ts, __Tzr) ->
+ __Val = #c_tuple{es = __2},
+ __Nss = lists:nthtail(2, __Ss),
+ yeccpars2(yeccgoto(tuple_pattern, hd(__Nss)), __Cat, __Nss, [__Val | __Stack], __T, __Ts, __Tzr);
+yeccpars2(120, 'string', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 69, [120 | __Ss], [__T | __Stack]);
+yeccpars2(120, 'atom', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 104, [120 | __Ss], [__T | __Stack]);
+yeccpars2(120, 'float', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 54, [120 | __Ss], [__T | __Stack]);
+yeccpars2(120, 'integer', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 57, [120 | __Ss], [__T | __Stack]);
+yeccpars2(120, 'char', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 50, [120 | __Ss], [__T | __Stack]);
+yeccpars2(120, '(', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 115, [120 | __Ss], [__T | __Stack]);
+yeccpars2(120, 'var', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 30, [120 | __Ss], [__T | __Stack]);
+yeccpars2(120, '#', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 95, [120 | __Ss], [__T | __Stack]);
+yeccpars2(120, '[', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 98, [120 | __Ss], [__T | __Stack]);
+yeccpars2(120, '{', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 114, [120 | __Ss], [__T | __Stack]);
+yeccpars2(120, _, _, _, __T, _, _) ->
+ yeccerror(__T);
+yeccpars2(121, __Cat, __Ss, [__3,__2,__1|__Stack], __T, __Ts, __Tzr) ->
+ __Val = [__1|__3],
+ __Nss = lists:nthtail(2, __Ss),
+ yeccpars2(yeccgoto(anno_patterns, hd(__Nss)), __Cat, __Nss, [__Val | __Stack], __T, __Ts, __Tzr);
+yeccpars2(122, '=', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 162, [122 | __Ss], [__T | __Stack]);
+yeccpars2(122, _, _, _, __T, _, _) ->
+ yeccerror(__T);
+yeccpars2(123, '-|', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 159, [123 | __Ss], [__T | __Stack]);
+yeccpars2(123, _, _, _, __T, _, _) ->
+ yeccerror(__T);
+yeccpars2(124, '-|', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 125, [124 | __Ss], [__T | __Stack]);
+yeccpars2(124, __Cat, __Ss, [__1|__Stack], __T, __Ts, __Tzr) ->
+ __Val = __1,
+ yeccpars2(yeccgoto(anno_variable, hd(__Ss)), __Cat, __Ss, [__Val | __Stack], __T, __Ts, __Tzr);
+yeccpars2(125, '[', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 126, [125 | __Ss], [__T | __Stack]);
+yeccpars2(125, _, _, _, __T, _, _) ->
+ yeccerror(__T);
+yeccpars2(126, '[', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 129, [126 | __Ss], [__T | __Stack]);
+yeccpars2(126, '{', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 142, [126 | __Ss], [__T | __Stack]);
+yeccpars2(126, 'string', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 140, [126 | __Ss], [__T | __Stack]);
+yeccpars2(126, 'atom', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 131, [126 | __Ss], [__T | __Stack]);
+yeccpars2(126, 'float', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 137, [126 | __Ss], [__T | __Stack]);
+yeccpars2(126, 'integer', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 138, [126 | __Ss], [__T | __Stack]);
+yeccpars2(126, 'char', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 133, [126 | __Ss], [__T | __Stack]);
+yeccpars2(126, ']', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 130, [126 | __Ss], [__T | __Stack]);
+yeccpars2(126, _, _, _, __T, _, _) ->
+ yeccerror(__T);
+yeccpars2(127, ')', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 128, [127 | __Ss], [__T | __Stack]);
+yeccpars2(127, _, _, _, __T, _, _) ->
+ yeccerror(__T);
+yeccpars2(128, __Cat, __Ss, [__5,__4,__3,__2,__1|__Stack], __T, __Ts, __Tzr) ->
+ __Val = core_lib:set_anno(__2,__4),
+ __Nss = lists:nthtail(4, __Ss),
+ yeccpars2(yeccgoto(anno_variable, hd(__Nss)), __Cat, __Nss, [__Val | __Stack], __T, __Ts, __Tzr);
+yeccpars2(129, '[', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 129, [129 | __Ss], [__T | __Stack]);
+yeccpars2(129, '{', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 142, [129 | __Ss], [__T | __Stack]);
+yeccpars2(129, 'string', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 140, [129 | __Ss], [__T | __Stack]);
+yeccpars2(129, 'atom', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 131, [129 | __Ss], [__T | __Stack]);
+yeccpars2(129, 'float', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 137, [129 | __Ss], [__T | __Stack]);
+yeccpars2(129, 'integer', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 138, [129 | __Ss], [__T | __Stack]);
+yeccpars2(129, 'char', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 133, [129 | __Ss], [__T | __Stack]);
+yeccpars2(129, ']', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 149, [129 | __Ss], [__T | __Stack]);
+yeccpars2(129, _, _, _, __T, _, _) ->
+ yeccerror(__T);
+yeccpars2(130, __Cat, __Ss, [__2,__1|__Stack], __T, __Ts, __Tzr) ->
+ __Val = [],
+ __Nss = lists:nthtail(1, __Ss),
+ yeccpars2(yeccgoto(annotation, hd(__Nss)), __Cat, __Nss, [__Val | __Stack], __T, __Ts, __Tzr);
+yeccpars2(131, __Cat, __Ss, [__1|__Stack], __T, __Ts, __Tzr) ->
+ __Val = tok_val(__1),
+ yeccpars2(yeccgoto(atomic_constant, hd(__Ss)), __Cat, __Ss, [__Val | __Stack], __T, __Ts, __Tzr);
+yeccpars2(132, __Cat, __Ss, [__1|__Stack], __T, __Ts, __Tzr) ->
+ __Val = __1,
+ yeccpars2(yeccgoto(constant, hd(__Ss)), __Cat, __Ss, [__Val | __Stack], __T, __Ts, __Tzr);
+yeccpars2(133, __Cat, __Ss, [__1|__Stack], __T, __Ts, __Tzr) ->
+ __Val = tok_val(__1),
+ yeccpars2(yeccgoto(atomic_constant, hd(__Ss)), __Cat, __Ss, [__Val | __Stack], __T, __Ts, __Tzr);
+yeccpars2(134, __Cat, __Ss, [__1|__Stack], __T, __Ts, __Tzr) ->
+ __Val = __1,
+ yeccpars2(yeccgoto(constant, hd(__Ss)), __Cat, __Ss, [__Val | __Stack], __T, __Ts, __Tzr);
+yeccpars2(135, ',', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 147, [135 | __Ss], [__T | __Stack]);
+yeccpars2(135, __Cat, __Ss, [__1|__Stack], __T, __Ts, __Tzr) ->
+ __Val = [__1],
+ yeccpars2(yeccgoto(constants, hd(__Ss)), __Cat, __Ss, [__Val | __Stack], __T, __Ts, __Tzr);
+yeccpars2(136, ']', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 146, [136 | __Ss], [__T | __Stack]);
+yeccpars2(136, _, _, _, __T, _, _) ->
+ yeccerror(__T);
+yeccpars2(137, __Cat, __Ss, [__1|__Stack], __T, __Ts, __Tzr) ->
+ __Val = tok_val(__1),
+ yeccpars2(yeccgoto(atomic_constant, hd(__Ss)), __Cat, __Ss, [__Val | __Stack], __T, __Ts, __Tzr);
+yeccpars2(138, __Cat, __Ss, [__1|__Stack], __T, __Ts, __Tzr) ->
+ __Val = tok_val(__1),
+ yeccpars2(yeccgoto(atomic_constant, hd(__Ss)), __Cat, __Ss, [__Val | __Stack], __T, __Ts, __Tzr);
+yeccpars2(139, __Cat, __Ss, [__1|__Stack], __T, __Ts, __Tzr) ->
+ __Val = [],
+ yeccpars2(yeccgoto(atomic_constant, hd(__Ss)), __Cat, __Ss, [__Val | __Stack], __T, __Ts, __Tzr);
+yeccpars2(140, __Cat, __Ss, [__1|__Stack], __T, __Ts, __Tzr) ->
+ __Val = tok_val(__1),
+ yeccpars2(yeccgoto(atomic_constant, hd(__Ss)), __Cat, __Ss, [__Val | __Stack], __T, __Ts, __Tzr);
+yeccpars2(141, __Cat, __Ss, [__1|__Stack], __T, __Ts, __Tzr) ->
+ __Val = __1,
+ yeccpars2(yeccgoto(constant, hd(__Ss)), __Cat, __Ss, [__Val | __Stack], __T, __Ts, __Tzr);
+yeccpars2(142, '[', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 129, [142 | __Ss], [__T | __Stack]);
+yeccpars2(142, '{', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 142, [142 | __Ss], [__T | __Stack]);
+yeccpars2(142, '}', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 144, [142 | __Ss], [__T | __Stack]);
+yeccpars2(142, 'string', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 140, [142 | __Ss], [__T | __Stack]);
+yeccpars2(142, 'atom', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 131, [142 | __Ss], [__T | __Stack]);
+yeccpars2(142, 'float', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 137, [142 | __Ss], [__T | __Stack]);
+yeccpars2(142, 'integer', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 138, [142 | __Ss], [__T | __Stack]);
+yeccpars2(142, 'char', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 133, [142 | __Ss], [__T | __Stack]);
+yeccpars2(142, _, _, _, __T, _, _) ->
+ yeccerror(__T);
+yeccpars2(143, '}', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 145, [143 | __Ss], [__T | __Stack]);
+yeccpars2(143, _, _, _, __T, _, _) ->
+ yeccerror(__T);
+yeccpars2(144, __Cat, __Ss, [__2,__1|__Stack], __T, __Ts, __Tzr) ->
+ __Val = {},
+ __Nss = lists:nthtail(1, __Ss),
+ yeccpars2(yeccgoto(tuple_constant, hd(__Nss)), __Cat, __Nss, [__Val | __Stack], __T, __Ts, __Tzr);
+yeccpars2(145, __Cat, __Ss, [__3,__2,__1|__Stack], __T, __Ts, __Tzr) ->
+ __Val = list_to_tuple(__2),
+ __Nss = lists:nthtail(2, __Ss),
+ yeccpars2(yeccgoto(tuple_constant, hd(__Nss)), __Cat, __Nss, [__Val | __Stack], __T, __Ts, __Tzr);
+yeccpars2(146, __Cat, __Ss, [__3,__2,__1|__Stack], __T, __Ts, __Tzr) ->
+ __Val = __2,
+ __Nss = lists:nthtail(2, __Ss),
+ yeccpars2(yeccgoto(annotation, hd(__Nss)), __Cat, __Nss, [__Val | __Stack], __T, __Ts, __Tzr);
+yeccpars2(147, '[', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 129, [147 | __Ss], [__T | __Stack]);
+yeccpars2(147, '{', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 142, [147 | __Ss], [__T | __Stack]);
+yeccpars2(147, 'string', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 140, [147 | __Ss], [__T | __Stack]);
+yeccpars2(147, 'atom', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 131, [147 | __Ss], [__T | __Stack]);
+yeccpars2(147, 'float', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 137, [147 | __Ss], [__T | __Stack]);
+yeccpars2(147, 'integer', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 138, [147 | __Ss], [__T | __Stack]);
+yeccpars2(147, 'char', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 133, [147 | __Ss], [__T | __Stack]);
+yeccpars2(147, _, _, _, __T, _, _) ->
+ yeccerror(__T);
+yeccpars2(148, __Cat, __Ss, [__3,__2,__1|__Stack], __T, __Ts, __Tzr) ->
+ __Val = [__1|__3],
+ __Nss = lists:nthtail(2, __Ss),
+ yeccpars2(yeccgoto(constants, hd(__Nss)), __Cat, __Nss, [__Val | __Stack], __T, __Ts, __Tzr);
+yeccpars2(149, __Cat, __Ss, [__2,__1|__Stack], __T, __Ts, __Tzr) ->
+ __Val = {nil,tok_line(__1)},
+ __Nss = lists:nthtail(1, __Ss),
+ yeccpars2(yeccgoto(nil, hd(__Nss)), __Cat, __Nss, [__Val | __Stack], __T, __Ts, __Tzr);
+yeccpars2(150, ',', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 151, [150 | __Ss], [__T | __Stack]);
+yeccpars2(150, '|', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 154, [150 | __Ss], [__T | __Stack]);
+yeccpars2(150, ']', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 152, [150 | __Ss], [__T | __Stack]);
+yeccpars2(150, _, _, _, __T, _, _) ->
+ yeccerror(__T);
+yeccpars2(151, '[', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 129, [151 | __Ss], [__T | __Stack]);
+yeccpars2(151, '{', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 142, [151 | __Ss], [__T | __Stack]);
+yeccpars2(151, 'string', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 140, [151 | __Ss], [__T | __Stack]);
+yeccpars2(151, 'atom', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 131, [151 | __Ss], [__T | __Stack]);
+yeccpars2(151, 'float', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 137, [151 | __Ss], [__T | __Stack]);
+yeccpars2(151, 'integer', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 138, [151 | __Ss], [__T | __Stack]);
+yeccpars2(151, 'char', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 133, [151 | __Ss], [__T | __Stack]);
+yeccpars2(151, _, _, _, __T, _, _) ->
+ yeccerror(__T);
+yeccpars2(152, __Cat, __Ss, [__1|__Stack], __T, __Ts, __Tzr) ->
+ __Val = [],
+ yeccpars2(yeccgoto(tail_constant, hd(__Ss)), __Cat, __Ss, [__Val | __Stack], __T, __Ts, __Tzr);
+yeccpars2(153, __Cat, __Ss, [__3,__2,__1|__Stack], __T, __Ts, __Tzr) ->
+ __Val = [__2|__3],
+ __Nss = lists:nthtail(2, __Ss),
+ yeccpars2(yeccgoto(cons_constant, hd(__Nss)), __Cat, __Nss, [__Val | __Stack], __T, __Ts, __Tzr);
+yeccpars2(154, '[', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 129, [154 | __Ss], [__T | __Stack]);
+yeccpars2(154, '{', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 142, [154 | __Ss], [__T | __Stack]);
+yeccpars2(154, 'string', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 140, [154 | __Ss], [__T | __Stack]);
+yeccpars2(154, 'atom', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 131, [154 | __Ss], [__T | __Stack]);
+yeccpars2(154, 'float', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 137, [154 | __Ss], [__T | __Stack]);
+yeccpars2(154, 'integer', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 138, [154 | __Ss], [__T | __Stack]);
+yeccpars2(154, 'char', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 133, [154 | __Ss], [__T | __Stack]);
+yeccpars2(154, _, _, _, __T, _, _) ->
+ yeccerror(__T);
+yeccpars2(155, ']', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 156, [155 | __Ss], [__T | __Stack]);
+yeccpars2(155, _, _, _, __T, _, _) ->
+ yeccerror(__T);
+yeccpars2(156, __Cat, __Ss, [__3,__2,__1|__Stack], __T, __Ts, __Tzr) ->
+ __Val = __2,
+ __Nss = lists:nthtail(2, __Ss),
+ yeccpars2(yeccgoto(tail_constant, hd(__Nss)), __Cat, __Nss, [__Val | __Stack], __T, __Ts, __Tzr);
+yeccpars2(157, ',', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 151, [157 | __Ss], [__T | __Stack]);
+yeccpars2(157, '|', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 154, [157 | __Ss], [__T | __Stack]);
+yeccpars2(157, ']', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 152, [157 | __Ss], [__T | __Stack]);
+yeccpars2(157, _, _, _, __T, _, _) ->
+ yeccerror(__T);
+yeccpars2(158, __Cat, __Ss, [__3,__2,__1|__Stack], __T, __Ts, __Tzr) ->
+ __Val = [__2|__3],
+ __Nss = lists:nthtail(2, __Ss),
+ yeccpars2(yeccgoto(tail_constant, hd(__Nss)), __Cat, __Nss, [__Val | __Stack], __T, __Ts, __Tzr);
+yeccpars2(159, '[', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 126, [159 | __Ss], [__T | __Stack]);
+yeccpars2(159, _, _, _, __T, _, _) ->
+ yeccerror(__T);
+yeccpars2(160, ')', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 161, [160 | __Ss], [__T | __Stack]);
+yeccpars2(160, _, _, _, __T, _, _) ->
+ yeccerror(__T);
+yeccpars2(161, __Cat, __Ss, [__5,__4,__3,__2,__1|__Stack], __T, __Ts, __Tzr) ->
+ __Val = core_lib:set_anno(__2,__4),
+ __Nss = lists:nthtail(4, __Ss),
+ yeccpars2(yeccgoto(anno_pattern, hd(__Nss)), __Cat, __Nss, [__Val | __Stack], __T, __Ts, __Tzr);
+yeccpars2(162, 'string', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 69, [162 | __Ss], [__T | __Stack]);
+yeccpars2(162, 'atom', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 104, [162 | __Ss], [__T | __Stack]);
+yeccpars2(162, 'float', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 54, [162 | __Ss], [__T | __Stack]);
+yeccpars2(162, 'integer', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 57, [162 | __Ss], [__T | __Stack]);
+yeccpars2(162, 'char', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 50, [162 | __Ss], [__T | __Stack]);
+yeccpars2(162, '(', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 115, [162 | __Ss], [__T | __Stack]);
+yeccpars2(162, 'var', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 30, [162 | __Ss], [__T | __Stack]);
+yeccpars2(162, '#', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 95, [162 | __Ss], [__T | __Stack]);
+yeccpars2(162, '[', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 98, [162 | __Ss], [__T | __Stack]);
+yeccpars2(162, '{', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 114, [162 | __Ss], [__T | __Stack]);
+yeccpars2(162, _, _, _, __T, _, _) ->
+ yeccerror(__T);
+yeccpars2(163, __Cat, __Ss, [__3,__2,__1|__Stack], __T, __Ts, __Tzr) ->
+ __Val = #c_alias{var = __1, pat = __3},
+ __Nss = lists:nthtail(2, __Ss),
+ yeccpars2(yeccgoto(other_pattern, hd(__Nss)), __Cat, __Nss, [__Val | __Stack], __T, __Ts, __Tzr);
+yeccpars2(164, 'receive', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 65, [164 | __Ss], [__T | __Stack]);
+yeccpars2(164, 'catch', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 48, [164 | __Ss], [__T | __Stack]);
+yeccpars2(164, 'try', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 70, [164 | __Ss], [__T | __Stack]);
+yeccpars2(164, 'primop', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 63, [164 | __Ss], [__T | __Stack]);
+yeccpars2(164, 'call', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 44, [164 | __Ss], [__T | __Stack]);
+yeccpars2(164, 'apply', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 40, [164 | __Ss], [__T | __Stack]);
+yeccpars2(164, 'case', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 46, [164 | __Ss], [__T | __Stack]);
+yeccpars2(164, 'letrec', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 60, [164 | __Ss], [__T | __Stack]);
+yeccpars2(164, 'let', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 58, [164 | __Ss], [__T | __Stack]);
+yeccpars2(164, 'fun', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 23, [164 | __Ss], [__T | __Stack]);
+yeccpars2(164, 'do', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 52, [164 | __Ss], [__T | __Stack]);
+yeccpars2(164, 'atom', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 41, [164 | __Ss], [__T | __Stack]);
+yeccpars2(164, '#', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 34, [164 | __Ss], [__T | __Stack]);
+yeccpars2(164, '[', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 37, [164 | __Ss], [__T | __Stack]);
+yeccpars2(164, '{', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 74, [164 | __Ss], [__T | __Stack]);
+yeccpars2(164, 'string', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 69, [164 | __Ss], [__T | __Stack]);
+yeccpars2(164, 'float', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 54, [164 | __Ss], [__T | __Stack]);
+yeccpars2(164, 'integer', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 57, [164 | __Ss], [__T | __Stack]);
+yeccpars2(164, 'char', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 50, [164 | __Ss], [__T | __Stack]);
+yeccpars2(164, '<', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 36, [164 | __Ss], [__T | __Stack]);
+yeccpars2(164, '(', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 35, [164 | __Ss], [__T | __Stack]);
+yeccpars2(164, 'var', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 30, [164 | __Ss], [__T | __Stack]);
+yeccpars2(164, _, _, _, __T, _, _) ->
+ yeccerror(__T);
+yeccpars2(165, '->', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 166, [165 | __Ss], [__T | __Stack]);
+yeccpars2(165, _, _, _, __T, _, _) ->
+ yeccerror(__T);
+yeccpars2(166, 'receive', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 65, [166 | __Ss], [__T | __Stack]);
+yeccpars2(166, 'catch', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 48, [166 | __Ss], [__T | __Stack]);
+yeccpars2(166, 'try', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 70, [166 | __Ss], [__T | __Stack]);
+yeccpars2(166, 'primop', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 63, [166 | __Ss], [__T | __Stack]);
+yeccpars2(166, 'call', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 44, [166 | __Ss], [__T | __Stack]);
+yeccpars2(166, 'apply', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 40, [166 | __Ss], [__T | __Stack]);
+yeccpars2(166, 'case', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 46, [166 | __Ss], [__T | __Stack]);
+yeccpars2(166, 'letrec', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 60, [166 | __Ss], [__T | __Stack]);
+yeccpars2(166, 'let', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 58, [166 | __Ss], [__T | __Stack]);
+yeccpars2(166, 'fun', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 23, [166 | __Ss], [__T | __Stack]);
+yeccpars2(166, 'do', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 52, [166 | __Ss], [__T | __Stack]);
+yeccpars2(166, 'atom', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 41, [166 | __Ss], [__T | __Stack]);
+yeccpars2(166, '#', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 34, [166 | __Ss], [__T | __Stack]);
+yeccpars2(166, '[', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 37, [166 | __Ss], [__T | __Stack]);
+yeccpars2(166, '{', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 74, [166 | __Ss], [__T | __Stack]);
+yeccpars2(166, 'string', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 69, [166 | __Ss], [__T | __Stack]);
+yeccpars2(166, 'float', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 54, [166 | __Ss], [__T | __Stack]);
+yeccpars2(166, 'integer', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 57, [166 | __Ss], [__T | __Stack]);
+yeccpars2(166, 'char', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 50, [166 | __Ss], [__T | __Stack]);
+yeccpars2(166, '<', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 36, [166 | __Ss], [__T | __Stack]);
+yeccpars2(166, '(', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 35, [166 | __Ss], [__T | __Stack]);
+yeccpars2(166, 'var', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 30, [166 | __Ss], [__T | __Stack]);
+yeccpars2(166, _, _, _, __T, _, _) ->
+ yeccerror(__T);
+yeccpars2(167, __Cat, __Ss, [__5,__4,__3,__2,__1|__Stack], __T, __Ts, __Tzr) ->
+ __Val = #c_clause{pats = __1, guard = __3, body = __5},
+ __Nss = lists:nthtail(4, __Ss),
+ yeccpars2(yeccgoto(clause, hd(__Nss)), __Cat, __Nss, [__Val | __Stack], __T, __Ts, __Tzr);
+yeccpars2(168, __Cat, __Ss, [__3,__2,__1|__Stack], __T, __Ts, __Tzr) ->
+ __Val = begin
+ {T,A} = __3, #c_receive{clauses = __2, timeout = T, action = A}
+ end,
+ __Nss = lists:nthtail(2, __Ss),
+ yeccpars2(yeccgoto(receive_expr, hd(__Nss)), __Cat, __Nss, [__Val | __Stack], __T, __Ts, __Tzr);
+yeccpars2(169, __Cat, __Ss, [__2,__1|__Stack], __T, __Ts, __Tzr) ->
+ __Val = [__1|__2],
+ __Nss = lists:nthtail(1, __Ss),
+ yeccpars2(yeccgoto(anno_clauses, hd(__Nss)), __Cat, __Nss, [__Val | __Stack], __T, __Ts, __Tzr);
+yeccpars2(170, '->', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 171, [170 | __Ss], [__T | __Stack]);
+yeccpars2(170, _, _, _, __T, _, _) ->
+ yeccerror(__T);
+yeccpars2(171, 'receive', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 65, [171 | __Ss], [__T | __Stack]);
+yeccpars2(171, 'catch', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 48, [171 | __Ss], [__T | __Stack]);
+yeccpars2(171, 'try', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 70, [171 | __Ss], [__T | __Stack]);
+yeccpars2(171, 'primop', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 63, [171 | __Ss], [__T | __Stack]);
+yeccpars2(171, 'call', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 44, [171 | __Ss], [__T | __Stack]);
+yeccpars2(171, 'apply', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 40, [171 | __Ss], [__T | __Stack]);
+yeccpars2(171, 'case', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 46, [171 | __Ss], [__T | __Stack]);
+yeccpars2(171, 'letrec', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 60, [171 | __Ss], [__T | __Stack]);
+yeccpars2(171, 'let', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 58, [171 | __Ss], [__T | __Stack]);
+yeccpars2(171, 'fun', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 23, [171 | __Ss], [__T | __Stack]);
+yeccpars2(171, 'do', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 52, [171 | __Ss], [__T | __Stack]);
+yeccpars2(171, 'atom', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 41, [171 | __Ss], [__T | __Stack]);
+yeccpars2(171, '#', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 34, [171 | __Ss], [__T | __Stack]);
+yeccpars2(171, '[', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 37, [171 | __Ss], [__T | __Stack]);
+yeccpars2(171, '{', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 74, [171 | __Ss], [__T | __Stack]);
+yeccpars2(171, 'string', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 69, [171 | __Ss], [__T | __Stack]);
+yeccpars2(171, 'float', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 54, [171 | __Ss], [__T | __Stack]);
+yeccpars2(171, 'integer', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 57, [171 | __Ss], [__T | __Stack]);
+yeccpars2(171, 'char', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 50, [171 | __Ss], [__T | __Stack]);
+yeccpars2(171, '<', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 36, [171 | __Ss], [__T | __Stack]);
+yeccpars2(171, '(', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 35, [171 | __Ss], [__T | __Stack]);
+yeccpars2(171, 'var', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 30, [171 | __Ss], [__T | __Stack]);
+yeccpars2(171, _, _, _, __T, _, _) ->
+ yeccerror(__T);
+yeccpars2(172, __Cat, __Ss, [__4,__3,__2,__1|__Stack], __T, __Ts, __Tzr) ->
+ __Val = {__2,__4},
+ __Nss = lists:nthtail(3, __Ss),
+ yeccpars2(yeccgoto(timeout, hd(__Nss)), __Cat, __Nss, [__Val | __Stack], __T, __Ts, __Tzr);
+yeccpars2(173, ',', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 174, [173 | __Ss], [__T | __Stack]);
+yeccpars2(173, '|', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 177, [173 | __Ss], [__T | __Stack]);
+yeccpars2(173, ']', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 175, [173 | __Ss], [__T | __Stack]);
+yeccpars2(173, _, _, _, __T, _, _) ->
+ yeccerror(__T);
+yeccpars2(174, 'string', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 69, [174 | __Ss], [__T | __Stack]);
+yeccpars2(174, 'atom', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 104, [174 | __Ss], [__T | __Stack]);
+yeccpars2(174, 'float', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 54, [174 | __Ss], [__T | __Stack]);
+yeccpars2(174, 'integer', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 57, [174 | __Ss], [__T | __Stack]);
+yeccpars2(174, 'char', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 50, [174 | __Ss], [__T | __Stack]);
+yeccpars2(174, '(', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 115, [174 | __Ss], [__T | __Stack]);
+yeccpars2(174, 'var', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 30, [174 | __Ss], [__T | __Stack]);
+yeccpars2(174, '#', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 95, [174 | __Ss], [__T | __Stack]);
+yeccpars2(174, '[', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 98, [174 | __Ss], [__T | __Stack]);
+yeccpars2(174, '{', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 114, [174 | __Ss], [__T | __Stack]);
+yeccpars2(174, _, _, _, __T, _, _) ->
+ yeccerror(__T);
+yeccpars2(175, __Cat, __Ss, [__1|__Stack], __T, __Ts, __Tzr) ->
+ __Val = #c_nil{},
+ yeccpars2(yeccgoto(tail_pattern, hd(__Ss)), __Cat, __Ss, [__Val | __Stack], __T, __Ts, __Tzr);
+yeccpars2(176, __Cat, __Ss, [__3,__2,__1|__Stack], __T, __Ts, __Tzr) ->
+ __Val = #c_cons{hd = __2, tl = __3},
+ __Nss = lists:nthtail(2, __Ss),
+ yeccpars2(yeccgoto(cons_pattern, hd(__Nss)), __Cat, __Nss, [__Val | __Stack], __T, __Ts, __Tzr);
+yeccpars2(177, 'string', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 69, [177 | __Ss], [__T | __Stack]);
+yeccpars2(177, 'atom', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 104, [177 | __Ss], [__T | __Stack]);
+yeccpars2(177, 'float', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 54, [177 | __Ss], [__T | __Stack]);
+yeccpars2(177, 'integer', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 57, [177 | __Ss], [__T | __Stack]);
+yeccpars2(177, 'char', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 50, [177 | __Ss], [__T | __Stack]);
+yeccpars2(177, '(', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 115, [177 | __Ss], [__T | __Stack]);
+yeccpars2(177, 'var', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 30, [177 | __Ss], [__T | __Stack]);
+yeccpars2(177, '#', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 95, [177 | __Ss], [__T | __Stack]);
+yeccpars2(177, '[', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 98, [177 | __Ss], [__T | __Stack]);
+yeccpars2(177, '{', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 114, [177 | __Ss], [__T | __Stack]);
+yeccpars2(177, _, _, _, __T, _, _) ->
+ yeccerror(__T);
+yeccpars2(178, ']', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 179, [178 | __Ss], [__T | __Stack]);
+yeccpars2(178, _, _, _, __T, _, _) ->
+ yeccerror(__T);
+yeccpars2(179, __Cat, __Ss, [__3,__2,__1|__Stack], __T, __Ts, __Tzr) ->
+ __Val = __2,
+ __Nss = lists:nthtail(2, __Ss),
+ yeccpars2(yeccgoto(tail_pattern, hd(__Nss)), __Cat, __Nss, [__Val | __Stack], __T, __Ts, __Tzr);
+yeccpars2(180, ',', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 174, [180 | __Ss], [__T | __Stack]);
+yeccpars2(180, '|', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 177, [180 | __Ss], [__T | __Stack]);
+yeccpars2(180, ']', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 175, [180 | __Ss], [__T | __Stack]);
+yeccpars2(180, _, _, _, __T, _, _) ->
+ yeccerror(__T);
+yeccpars2(181, __Cat, __Ss, [__3,__2,__1|__Stack], __T, __Ts, __Tzr) ->
+ __Val = #c_cons{hd = __2, tl = __3},
+ __Nss = lists:nthtail(2, __Ss),
+ yeccpars2(yeccgoto(tail_pattern, hd(__Nss)), __Cat, __Nss, [__Val | __Stack], __T, __Ts, __Tzr);
+yeccpars2(182, __Cat, __Ss, [__2,__1|__Stack], __T, __Ts, __Tzr) ->
+ __Val = [],
+ __Nss = lists:nthtail(1, __Ss),
+ yeccpars2(yeccgoto(clause_pattern, hd(__Nss)), __Cat, __Nss, [__Val | __Stack], __T, __Ts, __Tzr);
+yeccpars2(183, '>', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 184, [183 | __Ss], [__T | __Stack]);
+yeccpars2(183, _, _, _, __T, _, _) ->
+ yeccerror(__T);
+yeccpars2(184, __Cat, __Ss, [__3,__2,__1|__Stack], __T, __Ts, __Tzr) ->
+ __Val = __2,
+ __Nss = lists:nthtail(2, __Ss),
+ yeccpars2(yeccgoto(clause_pattern, hd(__Nss)), __Cat, __Nss, [__Val | __Stack], __T, __Ts, __Tzr);
+yeccpars2(185, '-|', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 187, [185 | __Ss], [__T | __Stack]);
+yeccpars2(185, _, _, _, __T, _, _) ->
+ yeccerror(__T);
+yeccpars2(186, '-|', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 159, [186 | __Ss], [__T | __Stack]);
+yeccpars2(186, __Cat, __Ss, [__1|__Stack], __T, __Ts, __Tzr) ->
+ __Val = __1,
+ yeccpars2(yeccgoto(anno_pattern, hd(__Ss)), __Cat, __Ss, [__Val | __Stack], __T, __Ts, __Tzr);
+yeccpars2(187, '[', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 126, [187 | __Ss], [__T | __Stack]);
+yeccpars2(187, _, _, _, __T, _, _) ->
+ yeccerror(__T);
+yeccpars2(188, ')', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 189, [188 | __Ss], [__T | __Stack]);
+yeccpars2(188, _, _, _, __T, _, _) ->
+ yeccerror(__T);
+yeccpars2(189, __Cat, __Ss, [__5,__4,__3,__2,__1|__Stack], __T, __Ts, __Tzr) ->
+ __Val = core_lib:set_anno(__2,__4),
+ __Nss = lists:nthtail(4, __Ss),
+ yeccpars2(yeccgoto(anno_clause, hd(__Nss)), __Cat, __Nss, [__Val | __Stack], __T, __Ts, __Tzr);
+yeccpars2(190, '#', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 191, [190 | __Ss], [__T | __Stack]);
+yeccpars2(190, '}', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 194, [190 | __Ss], [__T | __Stack]);
+yeccpars2(190, _, _, _, __T, _, _) ->
+ yeccerror(__T);
+yeccpars2(191, '<', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 200, [191 | __Ss], [__T | __Stack]);
+yeccpars2(191, _, _, _, __T, _, _) ->
+ yeccerror(__T);
+yeccpars2(192, ',', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 198, [192 | __Ss], [__T | __Stack]);
+yeccpars2(192, __Cat, __Ss, [__1|__Stack], __T, __Ts, __Tzr) ->
+ __Val = [__1],
+ yeccpars2(yeccgoto(segment_patterns, hd(__Ss)), __Cat, __Ss, [__Val | __Stack], __T, __Ts, __Tzr);
+yeccpars2(193, '}', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 196, [193 | __Ss], [__T | __Stack]);
+yeccpars2(193, _, _, _, __T, _, _) ->
+ yeccerror(__T);
+yeccpars2(194, '#', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 195, [194 | __Ss], [__T | __Stack]);
+yeccpars2(194, _, _, _, __T, _, _) ->
+ yeccerror(__T);
+yeccpars2(195, __Cat, __Ss, [__4,__3,__2,__1|__Stack], __T, __Ts, __Tzr) ->
+ __Val = #c_binary{segments = []},
+ __Nss = lists:nthtail(3, __Ss),
+ yeccpars2(yeccgoto(binary_pattern, hd(__Nss)), __Cat, __Nss, [__Val | __Stack], __T, __Ts, __Tzr);
+yeccpars2(196, '#', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 197, [196 | __Ss], [__T | __Stack]);
+yeccpars2(196, _, _, _, __T, _, _) ->
+ yeccerror(__T);
+yeccpars2(197, __Cat, __Ss, [__5,__4,__3,__2,__1|__Stack], __T, __Ts, __Tzr) ->
+ __Val = #c_binary{segments = __3},
+ __Nss = lists:nthtail(4, __Ss),
+ yeccpars2(yeccgoto(binary_pattern, hd(__Nss)), __Cat, __Nss, [__Val | __Stack], __T, __Ts, __Tzr);
+yeccpars2(198, '#', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 191, [198 | __Ss], [__T | __Stack]);
+yeccpars2(198, _, _, _, __T, _, _) ->
+ yeccerror(__T);
+yeccpars2(199, __Cat, __Ss, [__3,__2,__1|__Stack], __T, __Ts, __Tzr) ->
+ __Val = [__1|__3],
+ __Nss = lists:nthtail(2, __Ss),
+ yeccpars2(yeccgoto(segment_patterns, hd(__Nss)), __Cat, __Nss, [__Val | __Stack], __T, __Ts, __Tzr);
+yeccpars2(200, 'string', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 69, [200 | __Ss], [__T | __Stack]);
+yeccpars2(200, 'atom', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 104, [200 | __Ss], [__T | __Stack]);
+yeccpars2(200, 'float', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 54, [200 | __Ss], [__T | __Stack]);
+yeccpars2(200, 'integer', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 57, [200 | __Ss], [__T | __Stack]);
+yeccpars2(200, 'char', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 50, [200 | __Ss], [__T | __Stack]);
+yeccpars2(200, '(', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 115, [200 | __Ss], [__T | __Stack]);
+yeccpars2(200, 'var', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 30, [200 | __Ss], [__T | __Stack]);
+yeccpars2(200, '#', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 95, [200 | __Ss], [__T | __Stack]);
+yeccpars2(200, '[', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 98, [200 | __Ss], [__T | __Stack]);
+yeccpars2(200, '{', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 114, [200 | __Ss], [__T | __Stack]);
+yeccpars2(200, _, _, _, __T, _, _) ->
+ yeccerror(__T);
+yeccpars2(201, '>', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 202, [201 | __Ss], [__T | __Stack]);
+yeccpars2(201, _, _, _, __T, _, _) ->
+ yeccerror(__T);
+yeccpars2(202, '(', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 203, [202 | __Ss], [__T | __Stack]);
+yeccpars2(202, _, _, _, __T, _, _) ->
+ yeccerror(__T);
+yeccpars2(203, 'receive', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 65, [203 | __Ss], [__T | __Stack]);
+yeccpars2(203, 'catch', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 48, [203 | __Ss], [__T | __Stack]);
+yeccpars2(203, 'try', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 70, [203 | __Ss], [__T | __Stack]);
+yeccpars2(203, ')', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 205, [203 | __Ss], [__T | __Stack]);
+yeccpars2(203, 'primop', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 63, [203 | __Ss], [__T | __Stack]);
+yeccpars2(203, 'call', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 44, [203 | __Ss], [__T | __Stack]);
+yeccpars2(203, 'apply', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 40, [203 | __Ss], [__T | __Stack]);
+yeccpars2(203, 'case', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 46, [203 | __Ss], [__T | __Stack]);
+yeccpars2(203, 'letrec', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 60, [203 | __Ss], [__T | __Stack]);
+yeccpars2(203, 'let', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 58, [203 | __Ss], [__T | __Stack]);
+yeccpars2(203, 'fun', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 23, [203 | __Ss], [__T | __Stack]);
+yeccpars2(203, 'do', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 52, [203 | __Ss], [__T | __Stack]);
+yeccpars2(203, 'atom', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 41, [203 | __Ss], [__T | __Stack]);
+yeccpars2(203, '#', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 34, [203 | __Ss], [__T | __Stack]);
+yeccpars2(203, '[', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 37, [203 | __Ss], [__T | __Stack]);
+yeccpars2(203, '{', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 74, [203 | __Ss], [__T | __Stack]);
+yeccpars2(203, 'string', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 69, [203 | __Ss], [__T | __Stack]);
+yeccpars2(203, 'float', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 54, [203 | __Ss], [__T | __Stack]);
+yeccpars2(203, 'integer', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 57, [203 | __Ss], [__T | __Stack]);
+yeccpars2(203, 'char', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 50, [203 | __Ss], [__T | __Stack]);
+yeccpars2(203, '<', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 36, [203 | __Ss], [__T | __Stack]);
+yeccpars2(203, '(', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 35, [203 | __Ss], [__T | __Stack]);
+yeccpars2(203, 'var', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 30, [203 | __Ss], [__T | __Stack]);
+yeccpars2(203, _, _, _, __T, _, _) ->
+ yeccerror(__T);
+yeccpars2(204, __Cat, __Ss, [__5,__4,__3,__2,__1|__Stack], __T, __Ts, __Tzr) ->
+ __Val = case __5 of [S,U,T,Fs] -> #c_bitstr{val = __3, size = S, unit = U, type = T, flags = Fs}; true -> return_error(tok_line(__1),"expected 4 arguments in binary segment") end,
+ __Nss = lists:nthtail(4, __Ss),
+ yeccpars2(yeccgoto(segment_pattern, hd(__Nss)), __Cat, __Nss, [__Val | __Stack], __T, __Ts, __Tzr);
+yeccpars2(205, __Cat, __Ss, [__2,__1|__Stack], __T, __Ts, __Tzr) ->
+ __Val = [],
+ __Nss = lists:nthtail(1, __Ss),
+ yeccpars2(yeccgoto(arg_list, hd(__Nss)), __Cat, __Nss, [__Val | __Stack], __T, __Ts, __Tzr);
+yeccpars2(206, ')', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 207, [206 | __Ss], [__T | __Stack]);
+yeccpars2(206, _, _, _, __T, _, _) ->
+ yeccerror(__T);
+yeccpars2(207, __Cat, __Ss, [__3,__2,__1|__Stack], __T, __Ts, __Tzr) ->
+ __Val = __2,
+ __Nss = lists:nthtail(2, __Ss),
+ yeccpars2(yeccgoto(arg_list, hd(__Nss)), __Cat, __Nss, [__Val | __Stack], __T, __Ts, __Tzr);
+yeccpars2(208, '(', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 203, [208 | __Ss], [__T | __Stack]);
+yeccpars2(208, _, _, _, __T, _, _) ->
+ yeccerror(__T);
+yeccpars2(209, __Cat, __Ss, [__3,__2,__1|__Stack], __T, __Ts, __Tzr) ->
+ __Val = begin
+ Name = #c_atom{val = tok_val(__2)}, #c_primop{name = Name, args = __3}
+ end,
+ __Nss = lists:nthtail(2, __Ss),
+ yeccpars2(yeccgoto(primop_expr, hd(__Nss)), __Cat, __Nss, [__Val | __Stack], __T, __Ts, __Tzr);
+yeccpars2(210, 'in', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 211, [210 | __Ss], [__T | __Stack]);
+yeccpars2(210, _, _, _, __T, _, _) ->
+ yeccerror(__T);
+yeccpars2(211, 'receive', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 65, [211 | __Ss], [__T | __Stack]);
+yeccpars2(211, 'catch', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 48, [211 | __Ss], [__T | __Stack]);
+yeccpars2(211, 'try', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 70, [211 | __Ss], [__T | __Stack]);
+yeccpars2(211, 'primop', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 63, [211 | __Ss], [__T | __Stack]);
+yeccpars2(211, 'call', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 44, [211 | __Ss], [__T | __Stack]);
+yeccpars2(211, 'apply', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 40, [211 | __Ss], [__T | __Stack]);
+yeccpars2(211, 'case', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 46, [211 | __Ss], [__T | __Stack]);
+yeccpars2(211, 'letrec', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 60, [211 | __Ss], [__T | __Stack]);
+yeccpars2(211, 'let', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 58, [211 | __Ss], [__T | __Stack]);
+yeccpars2(211, 'fun', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 23, [211 | __Ss], [__T | __Stack]);
+yeccpars2(211, 'do', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 52, [211 | __Ss], [__T | __Stack]);
+yeccpars2(211, 'atom', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 41, [211 | __Ss], [__T | __Stack]);
+yeccpars2(211, '#', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 34, [211 | __Ss], [__T | __Stack]);
+yeccpars2(211, '[', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 37, [211 | __Ss], [__T | __Stack]);
+yeccpars2(211, '{', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 74, [211 | __Ss], [__T | __Stack]);
+yeccpars2(211, 'string', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 69, [211 | __Ss], [__T | __Stack]);
+yeccpars2(211, 'float', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 54, [211 | __Ss], [__T | __Stack]);
+yeccpars2(211, 'integer', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 57, [211 | __Ss], [__T | __Stack]);
+yeccpars2(211, 'char', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 50, [211 | __Ss], [__T | __Stack]);
+yeccpars2(211, '<', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 36, [211 | __Ss], [__T | __Stack]);
+yeccpars2(211, '(', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 35, [211 | __Ss], [__T | __Stack]);
+yeccpars2(211, 'var', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 30, [211 | __Ss], [__T | __Stack]);
+yeccpars2(211, _, _, _, __T, _, _) ->
+ yeccerror(__T);
+yeccpars2(212, __Cat, __Ss, [__4,__3,__2,__1|__Stack], __T, __Ts, __Tzr) ->
+ __Val = #c_letrec{defs = __2, body = __4},
+ __Nss = lists:nthtail(3, __Ss),
+ yeccpars2(yeccgoto(letrec_expr, hd(__Nss)), __Cat, __Nss, [__Val | __Stack], __T, __Ts, __Tzr);
+yeccpars2(213, '=', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 214, [213 | __Ss], [__T | __Stack]);
+yeccpars2(213, _, _, _, __T, _, _) ->
+ yeccerror(__T);
+yeccpars2(214, 'receive', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 65, [214 | __Ss], [__T | __Stack]);
+yeccpars2(214, 'catch', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 48, [214 | __Ss], [__T | __Stack]);
+yeccpars2(214, 'try', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 70, [214 | __Ss], [__T | __Stack]);
+yeccpars2(214, 'primop', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 63, [214 | __Ss], [__T | __Stack]);
+yeccpars2(214, 'call', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 44, [214 | __Ss], [__T | __Stack]);
+yeccpars2(214, 'apply', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 40, [214 | __Ss], [__T | __Stack]);
+yeccpars2(214, 'case', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 46, [214 | __Ss], [__T | __Stack]);
+yeccpars2(214, 'letrec', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 60, [214 | __Ss], [__T | __Stack]);
+yeccpars2(214, 'let', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 58, [214 | __Ss], [__T | __Stack]);
+yeccpars2(214, 'fun', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 23, [214 | __Ss], [__T | __Stack]);
+yeccpars2(214, 'do', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 52, [214 | __Ss], [__T | __Stack]);
+yeccpars2(214, 'atom', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 41, [214 | __Ss], [__T | __Stack]);
+yeccpars2(214, '#', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 34, [214 | __Ss], [__T | __Stack]);
+yeccpars2(214, '[', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 37, [214 | __Ss], [__T | __Stack]);
+yeccpars2(214, '{', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 74, [214 | __Ss], [__T | __Stack]);
+yeccpars2(214, 'string', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 69, [214 | __Ss], [__T | __Stack]);
+yeccpars2(214, 'float', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 54, [214 | __Ss], [__T | __Stack]);
+yeccpars2(214, 'integer', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 57, [214 | __Ss], [__T | __Stack]);
+yeccpars2(214, 'char', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 50, [214 | __Ss], [__T | __Stack]);
+yeccpars2(214, '<', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 36, [214 | __Ss], [__T | __Stack]);
+yeccpars2(214, '(', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 35, [214 | __Ss], [__T | __Stack]);
+yeccpars2(214, 'var', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 30, [214 | __Ss], [__T | __Stack]);
+yeccpars2(214, _, _, _, __T, _, _) ->
+ yeccerror(__T);
+yeccpars2(215, 'in', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 216, [215 | __Ss], [__T | __Stack]);
+yeccpars2(215, _, _, _, __T, _, _) ->
+ yeccerror(__T);
+yeccpars2(216, 'receive', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 65, [216 | __Ss], [__T | __Stack]);
+yeccpars2(216, 'catch', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 48, [216 | __Ss], [__T | __Stack]);
+yeccpars2(216, 'try', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 70, [216 | __Ss], [__T | __Stack]);
+yeccpars2(216, 'primop', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 63, [216 | __Ss], [__T | __Stack]);
+yeccpars2(216, 'call', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 44, [216 | __Ss], [__T | __Stack]);
+yeccpars2(216, 'apply', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 40, [216 | __Ss], [__T | __Stack]);
+yeccpars2(216, 'case', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 46, [216 | __Ss], [__T | __Stack]);
+yeccpars2(216, 'letrec', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 60, [216 | __Ss], [__T | __Stack]);
+yeccpars2(216, 'let', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 58, [216 | __Ss], [__T | __Stack]);
+yeccpars2(216, 'fun', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 23, [216 | __Ss], [__T | __Stack]);
+yeccpars2(216, 'do', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 52, [216 | __Ss], [__T | __Stack]);
+yeccpars2(216, 'atom', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 41, [216 | __Ss], [__T | __Stack]);
+yeccpars2(216, '#', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 34, [216 | __Ss], [__T | __Stack]);
+yeccpars2(216, '[', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 37, [216 | __Ss], [__T | __Stack]);
+yeccpars2(216, '{', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 74, [216 | __Ss], [__T | __Stack]);
+yeccpars2(216, 'string', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 69, [216 | __Ss], [__T | __Stack]);
+yeccpars2(216, 'float', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 54, [216 | __Ss], [__T | __Stack]);
+yeccpars2(216, 'integer', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 57, [216 | __Ss], [__T | __Stack]);
+yeccpars2(216, 'char', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 50, [216 | __Ss], [__T | __Stack]);
+yeccpars2(216, '<', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 36, [216 | __Ss], [__T | __Stack]);
+yeccpars2(216, '(', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 35, [216 | __Ss], [__T | __Stack]);
+yeccpars2(216, 'var', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 30, [216 | __Ss], [__T | __Stack]);
+yeccpars2(216, _, _, _, __T, _, _) ->
+ yeccerror(__T);
+yeccpars2(217, __Cat, __Ss, [__6,__5,__4,__3,__2,__1|__Stack], __T, __Ts, __Tzr) ->
+ __Val = #c_let{vars = __2, arg = __4, body = __6},
+ __Nss = lists:nthtail(5, __Ss),
+ yeccpars2(yeccgoto(let_expr, hd(__Nss)), __Cat, __Nss, [__Val | __Stack], __T, __Ts, __Tzr);
+yeccpars2(218, 'receive', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 65, [218 | __Ss], [__T | __Stack]);
+yeccpars2(218, 'catch', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 48, [218 | __Ss], [__T | __Stack]);
+yeccpars2(218, 'try', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 70, [218 | __Ss], [__T | __Stack]);
+yeccpars2(218, 'primop', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 63, [218 | __Ss], [__T | __Stack]);
+yeccpars2(218, 'call', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 44, [218 | __Ss], [__T | __Stack]);
+yeccpars2(218, 'apply', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 40, [218 | __Ss], [__T | __Stack]);
+yeccpars2(218, 'case', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 46, [218 | __Ss], [__T | __Stack]);
+yeccpars2(218, 'letrec', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 60, [218 | __Ss], [__T | __Stack]);
+yeccpars2(218, 'let', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 58, [218 | __Ss], [__T | __Stack]);
+yeccpars2(218, 'fun', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 23, [218 | __Ss], [__T | __Stack]);
+yeccpars2(218, 'do', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 52, [218 | __Ss], [__T | __Stack]);
+yeccpars2(218, 'atom', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 41, [218 | __Ss], [__T | __Stack]);
+yeccpars2(218, '#', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 34, [218 | __Ss], [__T | __Stack]);
+yeccpars2(218, '[', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 37, [218 | __Ss], [__T | __Stack]);
+yeccpars2(218, '{', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 74, [218 | __Ss], [__T | __Stack]);
+yeccpars2(218, 'string', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 69, [218 | __Ss], [__T | __Stack]);
+yeccpars2(218, 'float', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 54, [218 | __Ss], [__T | __Stack]);
+yeccpars2(218, 'integer', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 57, [218 | __Ss], [__T | __Stack]);
+yeccpars2(218, 'char', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 50, [218 | __Ss], [__T | __Stack]);
+yeccpars2(218, '<', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 36, [218 | __Ss], [__T | __Stack]);
+yeccpars2(218, '(', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 35, [218 | __Ss], [__T | __Stack]);
+yeccpars2(218, 'var', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 30, [218 | __Ss], [__T | __Stack]);
+yeccpars2(218, _, _, _, __T, _, _) ->
+ yeccerror(__T);
+yeccpars2(219, __Cat, __Ss, [__3,__2,__1|__Stack], __T, __Ts, __Tzr) ->
+ __Val = #c_seq{arg = __2, body = __3},
+ __Nss = lists:nthtail(2, __Ss),
+ yeccpars2(yeccgoto(sequence, hd(__Nss)), __Cat, __Nss, [__Val | __Stack], __T, __Ts, __Tzr);
+yeccpars2(220, __Cat, __Ss, [__2,__1|__Stack], __T, __Ts, __Tzr) ->
+ __Val = #c_catch{body = __2},
+ __Nss = lists:nthtail(1, __Ss),
+ yeccpars2(yeccgoto(catch_expr, hd(__Nss)), __Cat, __Nss, [__Val | __Stack], __T, __Ts, __Tzr);
+yeccpars2(221, 'of', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 222, [221 | __Ss], [__T | __Stack]);
+yeccpars2(221, _, _, _, __T, _, _) ->
+ yeccerror(__T);
+yeccpars2(222, '<', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 97, [222 | __Ss], [__T | __Stack]);
+yeccpars2(222, '(', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 96, [222 | __Ss], [__T | __Stack]);
+yeccpars2(222, 'string', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 69, [222 | __Ss], [__T | __Stack]);
+yeccpars2(222, 'atom', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 104, [222 | __Ss], [__T | __Stack]);
+yeccpars2(222, 'float', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 54, [222 | __Ss], [__T | __Stack]);
+yeccpars2(222, 'integer', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 57, [222 | __Ss], [__T | __Stack]);
+yeccpars2(222, 'char', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 50, [222 | __Ss], [__T | __Stack]);
+yeccpars2(222, 'var', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 30, [222 | __Ss], [__T | __Stack]);
+yeccpars2(222, '#', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 95, [222 | __Ss], [__T | __Stack]);
+yeccpars2(222, '[', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 98, [222 | __Ss], [__T | __Stack]);
+yeccpars2(222, '{', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 114, [222 | __Ss], [__T | __Stack]);
+yeccpars2(222, _, _, _, __T, _, _) ->
+ yeccerror(__T);
+yeccpars2(223, 'end', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 224, [223 | __Ss], [__T | __Stack]);
+yeccpars2(223, _, _, _, __T, _, _) ->
+ yeccerror(__T);
+yeccpars2(224, __Cat, __Ss, [__5,__4,__3,__2,__1|__Stack], __T, __Ts, __Tzr) ->
+ __Val = #c_case{arg = __2, clauses = __4},
+ __Nss = lists:nthtail(4, __Ss),
+ yeccpars2(yeccgoto(case_expr, hd(__Nss)), __Cat, __Nss, [__Val | __Stack], __T, __Ts, __Tzr);
+yeccpars2(225, ':', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 226, [225 | __Ss], [__T | __Stack]);
+yeccpars2(225, _, _, _, __T, _, _) ->
+ yeccerror(__T);
+yeccpars2(226, 'receive', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 65, [226 | __Ss], [__T | __Stack]);
+yeccpars2(226, 'catch', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 48, [226 | __Ss], [__T | __Stack]);
+yeccpars2(226, 'try', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 70, [226 | __Ss], [__T | __Stack]);
+yeccpars2(226, 'primop', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 63, [226 | __Ss], [__T | __Stack]);
+yeccpars2(226, 'call', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 44, [226 | __Ss], [__T | __Stack]);
+yeccpars2(226, 'apply', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 40, [226 | __Ss], [__T | __Stack]);
+yeccpars2(226, 'case', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 46, [226 | __Ss], [__T | __Stack]);
+yeccpars2(226, 'letrec', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 60, [226 | __Ss], [__T | __Stack]);
+yeccpars2(226, 'let', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 58, [226 | __Ss], [__T | __Stack]);
+yeccpars2(226, 'fun', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 23, [226 | __Ss], [__T | __Stack]);
+yeccpars2(226, 'do', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 52, [226 | __Ss], [__T | __Stack]);
+yeccpars2(226, 'atom', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 41, [226 | __Ss], [__T | __Stack]);
+yeccpars2(226, '#', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 34, [226 | __Ss], [__T | __Stack]);
+yeccpars2(226, '[', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 37, [226 | __Ss], [__T | __Stack]);
+yeccpars2(226, '{', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 74, [226 | __Ss], [__T | __Stack]);
+yeccpars2(226, 'string', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 69, [226 | __Ss], [__T | __Stack]);
+yeccpars2(226, 'float', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 54, [226 | __Ss], [__T | __Stack]);
+yeccpars2(226, 'integer', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 57, [226 | __Ss], [__T | __Stack]);
+yeccpars2(226, 'char', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 50, [226 | __Ss], [__T | __Stack]);
+yeccpars2(226, '<', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 36, [226 | __Ss], [__T | __Stack]);
+yeccpars2(226, '(', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 35, [226 | __Ss], [__T | __Stack]);
+yeccpars2(226, 'var', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 30, [226 | __Ss], [__T | __Stack]);
+yeccpars2(226, _, _, _, __T, _, _) ->
+ yeccerror(__T);
+yeccpars2(227, '(', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 203, [227 | __Ss], [__T | __Stack]);
+yeccpars2(227, _, _, _, __T, _, _) ->
+ yeccerror(__T);
+yeccpars2(228, __Cat, __Ss, [__5,__4,__3,__2,__1|__Stack], __T, __Ts, __Tzr) ->
+ __Val = #c_call{module = __2, name = __4, args = __5},
+ __Nss = lists:nthtail(4, __Ss),
+ yeccpars2(yeccgoto(call_expr, hd(__Nss)), __Cat, __Nss, [__Val | __Stack], __T, __Ts, __Tzr);
+yeccpars2(229, '(', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 203, [229 | __Ss], [__T | __Stack]);
+yeccpars2(229, _, _, _, __T, _, _) ->
+ yeccerror(__T);
+yeccpars2(230, __Cat, __Ss, [__3,__2,__1|__Stack], __T, __Ts, __Tzr) ->
+ __Val = #c_apply{op = __2, args = __3},
+ __Nss = lists:nthtail(2, __Ss),
+ yeccpars2(yeccgoto(application_expr, hd(__Nss)), __Cat, __Nss, [__Val | __Stack], __T, __Ts, __Tzr);
+yeccpars2(231, ',', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 232, [231 | __Ss], [__T | __Stack]);
+yeccpars2(231, '|', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 235, [231 | __Ss], [__T | __Stack]);
+yeccpars2(231, ']', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 233, [231 | __Ss], [__T | __Stack]);
+yeccpars2(231, _, _, _, __T, _, _) ->
+ yeccerror(__T);
+yeccpars2(232, 'receive', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 65, [232 | __Ss], [__T | __Stack]);
+yeccpars2(232, 'catch', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 48, [232 | __Ss], [__T | __Stack]);
+yeccpars2(232, 'try', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 70, [232 | __Ss], [__T | __Stack]);
+yeccpars2(232, 'primop', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 63, [232 | __Ss], [__T | __Stack]);
+yeccpars2(232, 'call', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 44, [232 | __Ss], [__T | __Stack]);
+yeccpars2(232, 'apply', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 40, [232 | __Ss], [__T | __Stack]);
+yeccpars2(232, 'case', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 46, [232 | __Ss], [__T | __Stack]);
+yeccpars2(232, 'letrec', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 60, [232 | __Ss], [__T | __Stack]);
+yeccpars2(232, 'let', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 58, [232 | __Ss], [__T | __Stack]);
+yeccpars2(232, 'fun', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 23, [232 | __Ss], [__T | __Stack]);
+yeccpars2(232, 'do', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 52, [232 | __Ss], [__T | __Stack]);
+yeccpars2(232, 'atom', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 41, [232 | __Ss], [__T | __Stack]);
+yeccpars2(232, '#', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 34, [232 | __Ss], [__T | __Stack]);
+yeccpars2(232, '[', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 37, [232 | __Ss], [__T | __Stack]);
+yeccpars2(232, '{', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 74, [232 | __Ss], [__T | __Stack]);
+yeccpars2(232, 'string', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 69, [232 | __Ss], [__T | __Stack]);
+yeccpars2(232, 'float', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 54, [232 | __Ss], [__T | __Stack]);
+yeccpars2(232, 'integer', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 57, [232 | __Ss], [__T | __Stack]);
+yeccpars2(232, 'char', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 50, [232 | __Ss], [__T | __Stack]);
+yeccpars2(232, '<', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 36, [232 | __Ss], [__T | __Stack]);
+yeccpars2(232, '(', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 35, [232 | __Ss], [__T | __Stack]);
+yeccpars2(232, 'var', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 30, [232 | __Ss], [__T | __Stack]);
+yeccpars2(232, _, _, _, __T, _, _) ->
+ yeccerror(__T);
+yeccpars2(233, __Cat, __Ss, [__1|__Stack], __T, __Ts, __Tzr) ->
+ __Val = #c_nil{},
+ yeccpars2(yeccgoto(tail, hd(__Ss)), __Cat, __Ss, [__Val | __Stack], __T, __Ts, __Tzr);
+yeccpars2(234, __Cat, __Ss, [__3,__2,__1|__Stack], __T, __Ts, __Tzr) ->
+ __Val = #c_cons{hd = __2, tl = __3},
+ __Nss = lists:nthtail(2, __Ss),
+ yeccpars2(yeccgoto(cons, hd(__Nss)), __Cat, __Nss, [__Val | __Stack], __T, __Ts, __Tzr);
+yeccpars2(235, 'receive', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 65, [235 | __Ss], [__T | __Stack]);
+yeccpars2(235, 'catch', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 48, [235 | __Ss], [__T | __Stack]);
+yeccpars2(235, 'try', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 70, [235 | __Ss], [__T | __Stack]);
+yeccpars2(235, 'primop', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 63, [235 | __Ss], [__T | __Stack]);
+yeccpars2(235, 'call', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 44, [235 | __Ss], [__T | __Stack]);
+yeccpars2(235, 'apply', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 40, [235 | __Ss], [__T | __Stack]);
+yeccpars2(235, 'case', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 46, [235 | __Ss], [__T | __Stack]);
+yeccpars2(235, 'letrec', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 60, [235 | __Ss], [__T | __Stack]);
+yeccpars2(235, 'let', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 58, [235 | __Ss], [__T | __Stack]);
+yeccpars2(235, 'fun', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 23, [235 | __Ss], [__T | __Stack]);
+yeccpars2(235, 'do', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 52, [235 | __Ss], [__T | __Stack]);
+yeccpars2(235, 'atom', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 41, [235 | __Ss], [__T | __Stack]);
+yeccpars2(235, '#', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 34, [235 | __Ss], [__T | __Stack]);
+yeccpars2(235, '[', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 37, [235 | __Ss], [__T | __Stack]);
+yeccpars2(235, '{', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 74, [235 | __Ss], [__T | __Stack]);
+yeccpars2(235, 'string', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 69, [235 | __Ss], [__T | __Stack]);
+yeccpars2(235, 'float', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 54, [235 | __Ss], [__T | __Stack]);
+yeccpars2(235, 'integer', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 57, [235 | __Ss], [__T | __Stack]);
+yeccpars2(235, 'char', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 50, [235 | __Ss], [__T | __Stack]);
+yeccpars2(235, '<', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 36, [235 | __Ss], [__T | __Stack]);
+yeccpars2(235, '(', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 35, [235 | __Ss], [__T | __Stack]);
+yeccpars2(235, 'var', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 30, [235 | __Ss], [__T | __Stack]);
+yeccpars2(235, _, _, _, __T, _, _) ->
+ yeccerror(__T);
+yeccpars2(236, ']', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 237, [236 | __Ss], [__T | __Stack]);
+yeccpars2(236, _, _, _, __T, _, _) ->
+ yeccerror(__T);
+yeccpars2(237, __Cat, __Ss, [__3,__2,__1|__Stack], __T, __Ts, __Tzr) ->
+ __Val = __2,
+ __Nss = lists:nthtail(2, __Ss),
+ yeccpars2(yeccgoto(tail, hd(__Nss)), __Cat, __Nss, [__Val | __Stack], __T, __Ts, __Tzr);
+yeccpars2(238, ',', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 232, [238 | __Ss], [__T | __Stack]);
+yeccpars2(238, '|', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 235, [238 | __Ss], [__T | __Stack]);
+yeccpars2(238, ']', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 233, [238 | __Ss], [__T | __Stack]);
+yeccpars2(238, _, _, _, __T, _, _) ->
+ yeccerror(__T);
+yeccpars2(239, __Cat, __Ss, [__3,__2,__1|__Stack], __T, __Ts, __Tzr) ->
+ __Val = #c_cons{hd = __2, tl = __3},
+ __Nss = lists:nthtail(2, __Ss),
+ yeccpars2(yeccgoto(tail, hd(__Nss)), __Cat, __Nss, [__Val | __Stack], __T, __Ts, __Tzr);
+yeccpars2(240, __Cat, __Ss, [__2,__1|__Stack], __T, __Ts, __Tzr) ->
+ __Val = #c_values{es = []},
+ __Nss = lists:nthtail(1, __Ss),
+ yeccpars2(yeccgoto(expression, hd(__Nss)), __Cat, __Nss, [__Val | __Stack], __T, __Ts, __Tzr);
+yeccpars2(241, '>', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 242, [241 | __Ss], [__T | __Stack]);
+yeccpars2(241, _, _, _, __T, _, _) ->
+ yeccerror(__T);
+yeccpars2(242, __Cat, __Ss, [__3,__2,__1|__Stack], __T, __Ts, __Tzr) ->
+ __Val = #c_values{es = __2},
+ __Nss = lists:nthtail(2, __Ss),
+ yeccpars2(yeccgoto(expression, hd(__Nss)), __Cat, __Nss, [__Val | __Stack], __T, __Ts, __Tzr);
+yeccpars2(243, '-|', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 244, [243 | __Ss], [__T | __Stack]);
+yeccpars2(243, _, _, _, __T, _, _) ->
+ yeccerror(__T);
+yeccpars2(244, '[', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 126, [244 | __Ss], [__T | __Stack]);
+yeccpars2(244, _, _, _, __T, _, _) ->
+ yeccerror(__T);
+yeccpars2(245, ')', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 246, [245 | __Ss], [__T | __Stack]);
+yeccpars2(245, _, _, _, __T, _, _) ->
+ yeccerror(__T);
+yeccpars2(246, __Cat, __Ss, [__5,__4,__3,__2,__1|__Stack], __T, __Ts, __Tzr) ->
+ __Val = core_lib:set_anno(__2,__4),
+ __Nss = lists:nthtail(4, __Ss),
+ yeccpars2(yeccgoto(anno_expression, hd(__Nss)), __Cat, __Nss, [__Val | __Stack], __T, __Ts, __Tzr);
+yeccpars2(247, '#', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 248, [247 | __Ss], [__T | __Stack]);
+yeccpars2(247, '}', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 251, [247 | __Ss], [__T | __Stack]);
+yeccpars2(247, _, _, _, __T, _, _) ->
+ yeccerror(__T);
+yeccpars2(248, '<', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 257, [248 | __Ss], [__T | __Stack]);
+yeccpars2(248, _, _, _, __T, _, _) ->
+ yeccerror(__T);
+yeccpars2(249, ',', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 255, [249 | __Ss], [__T | __Stack]);
+yeccpars2(249, __Cat, __Ss, [__1|__Stack], __T, __Ts, __Tzr) ->
+ __Val = [__1],
+ yeccpars2(yeccgoto(segments, hd(__Ss)), __Cat, __Ss, [__Val | __Stack], __T, __Ts, __Tzr);
+yeccpars2(250, '}', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 253, [250 | __Ss], [__T | __Stack]);
+yeccpars2(250, _, _, _, __T, _, _) ->
+ yeccerror(__T);
+yeccpars2(251, '#', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 252, [251 | __Ss], [__T | __Stack]);
+yeccpars2(251, _, _, _, __T, _, _) ->
+ yeccerror(__T);
+yeccpars2(252, __Cat, __Ss, [__4,__3,__2,__1|__Stack], __T, __Ts, __Tzr) ->
+ __Val = #c_binary{segments = []},
+ __Nss = lists:nthtail(3, __Ss),
+ yeccpars2(yeccgoto(binary, hd(__Nss)), __Cat, __Nss, [__Val | __Stack], __T, __Ts, __Tzr);
+yeccpars2(253, '#', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 254, [253 | __Ss], [__T | __Stack]);
+yeccpars2(253, _, _, _, __T, _, _) ->
+ yeccerror(__T);
+yeccpars2(254, __Cat, __Ss, [__5,__4,__3,__2,__1|__Stack], __T, __Ts, __Tzr) ->
+ __Val = #c_binary{segments = __3},
+ __Nss = lists:nthtail(4, __Ss),
+ yeccpars2(yeccgoto(binary, hd(__Nss)), __Cat, __Nss, [__Val | __Stack], __T, __Ts, __Tzr);
+yeccpars2(255, '#', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 248, [255 | __Ss], [__T | __Stack]);
+yeccpars2(255, _, _, _, __T, _, _) ->
+ yeccerror(__T);
+yeccpars2(256, __Cat, __Ss, [__3,__2,__1|__Stack], __T, __Ts, __Tzr) ->
+ __Val = [__1|__3],
+ __Nss = lists:nthtail(2, __Ss),
+ yeccpars2(yeccgoto(segments, hd(__Nss)), __Cat, __Nss, [__Val | __Stack], __T, __Ts, __Tzr);
+yeccpars2(257, 'receive', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 65, [257 | __Ss], [__T | __Stack]);
+yeccpars2(257, 'catch', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 48, [257 | __Ss], [__T | __Stack]);
+yeccpars2(257, 'try', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 70, [257 | __Ss], [__T | __Stack]);
+yeccpars2(257, 'primop', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 63, [257 | __Ss], [__T | __Stack]);
+yeccpars2(257, 'call', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 44, [257 | __Ss], [__T | __Stack]);
+yeccpars2(257, 'apply', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 40, [257 | __Ss], [__T | __Stack]);
+yeccpars2(257, 'case', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 46, [257 | __Ss], [__T | __Stack]);
+yeccpars2(257, 'letrec', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 60, [257 | __Ss], [__T | __Stack]);
+yeccpars2(257, 'let', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 58, [257 | __Ss], [__T | __Stack]);
+yeccpars2(257, 'fun', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 23, [257 | __Ss], [__T | __Stack]);
+yeccpars2(257, 'do', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 52, [257 | __Ss], [__T | __Stack]);
+yeccpars2(257, 'atom', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 41, [257 | __Ss], [__T | __Stack]);
+yeccpars2(257, '#', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 34, [257 | __Ss], [__T | __Stack]);
+yeccpars2(257, '[', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 37, [257 | __Ss], [__T | __Stack]);
+yeccpars2(257, '{', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 74, [257 | __Ss], [__T | __Stack]);
+yeccpars2(257, 'string', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 69, [257 | __Ss], [__T | __Stack]);
+yeccpars2(257, 'float', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 54, [257 | __Ss], [__T | __Stack]);
+yeccpars2(257, 'integer', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 57, [257 | __Ss], [__T | __Stack]);
+yeccpars2(257, 'char', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 50, [257 | __Ss], [__T | __Stack]);
+yeccpars2(257, '<', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 36, [257 | __Ss], [__T | __Stack]);
+yeccpars2(257, '(', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 35, [257 | __Ss], [__T | __Stack]);
+yeccpars2(257, 'var', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 30, [257 | __Ss], [__T | __Stack]);
+yeccpars2(257, _, _, _, __T, _, _) ->
+ yeccerror(__T);
+yeccpars2(258, '>', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 259, [258 | __Ss], [__T | __Stack]);
+yeccpars2(258, _, _, _, __T, _, _) ->
+ yeccerror(__T);
+yeccpars2(259, '(', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 260, [259 | __Ss], [__T | __Stack]);
+yeccpars2(259, _, _, _, __T, _, _) ->
+ yeccerror(__T);
+yeccpars2(260, 'receive', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 65, [260 | __Ss], [__T | __Stack]);
+yeccpars2(260, 'catch', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 48, [260 | __Ss], [__T | __Stack]);
+yeccpars2(260, 'try', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 70, [260 | __Ss], [__T | __Stack]);
+yeccpars2(260, 'primop', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 63, [260 | __Ss], [__T | __Stack]);
+yeccpars2(260, 'call', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 44, [260 | __Ss], [__T | __Stack]);
+yeccpars2(260, 'apply', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 40, [260 | __Ss], [__T | __Stack]);
+yeccpars2(260, 'case', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 46, [260 | __Ss], [__T | __Stack]);
+yeccpars2(260, 'letrec', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 60, [260 | __Ss], [__T | __Stack]);
+yeccpars2(260, 'let', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 58, [260 | __Ss], [__T | __Stack]);
+yeccpars2(260, 'fun', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 23, [260 | __Ss], [__T | __Stack]);
+yeccpars2(260, 'do', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 52, [260 | __Ss], [__T | __Stack]);
+yeccpars2(260, 'atom', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 41, [260 | __Ss], [__T | __Stack]);
+yeccpars2(260, '#', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 34, [260 | __Ss], [__T | __Stack]);
+yeccpars2(260, '[', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 37, [260 | __Ss], [__T | __Stack]);
+yeccpars2(260, '{', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 74, [260 | __Ss], [__T | __Stack]);
+yeccpars2(260, 'string', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 69, [260 | __Ss], [__T | __Stack]);
+yeccpars2(260, 'float', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 54, [260 | __Ss], [__T | __Stack]);
+yeccpars2(260, 'integer', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 57, [260 | __Ss], [__T | __Stack]);
+yeccpars2(260, 'char', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 50, [260 | __Ss], [__T | __Stack]);
+yeccpars2(260, '<', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 36, [260 | __Ss], [__T | __Stack]);
+yeccpars2(260, '(', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 35, [260 | __Ss], [__T | __Stack]);
+yeccpars2(260, 'var', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 30, [260 | __Ss], [__T | __Stack]);
+yeccpars2(260, _, _, _, __T, _, _) ->
+ yeccerror(__T);
+yeccpars2(261, ')', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 262, [261 | __Ss], [__T | __Stack]);
+yeccpars2(261, _, _, _, __T, _, _) ->
+ yeccerror(__T);
+yeccpars2(262, __Cat, __Ss, [__7,__6,__5,__4,__3,__2,__1|__Stack], __T, __Ts, __Tzr) ->
+ __Val = case __6 of [S,U,T,Fs] -> #c_bitstr{val = __3, size = S, unit = U, type = T, flags = Fs}; true -> return_error(tok_line(__1),"expected 4 arguments in binary segment") end,
+ __Nss = lists:nthtail(6, __Ss),
+ yeccpars2(yeccgoto(segment, hd(__Nss)), __Cat, __Nss, [__Val | __Stack], __T, __Ts, __Tzr);
+yeccpars2(263, '(', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 26, [263 | __Ss], [__T | __Stack]);
+yeccpars2(263, 'var', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 30, [263 | __Ss], [__T | __Stack]);
+yeccpars2(263, _, _, _, __T, _, _) ->
+ yeccerror(__T);
+yeccpars2(264, __Cat, __Ss, [__3,__2,__1|__Stack], __T, __Ts, __Tzr) ->
+ __Val = [__1|__3],
+ __Nss = lists:nthtail(2, __Ss),
+ yeccpars2(yeccgoto(anno_variables, hd(__Nss)), __Cat, __Nss, [__Val | __Stack], __T, __Ts, __Tzr);
+yeccpars2(265, 'receive', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 65, [265 | __Ss], [__T | __Stack]);
+yeccpars2(265, 'catch', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 48, [265 | __Ss], [__T | __Stack]);
+yeccpars2(265, 'try', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 70, [265 | __Ss], [__T | __Stack]);
+yeccpars2(265, 'primop', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 63, [265 | __Ss], [__T | __Stack]);
+yeccpars2(265, 'call', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 44, [265 | __Ss], [__T | __Stack]);
+yeccpars2(265, 'apply', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 40, [265 | __Ss], [__T | __Stack]);
+yeccpars2(265, 'case', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 46, [265 | __Ss], [__T | __Stack]);
+yeccpars2(265, 'letrec', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 60, [265 | __Ss], [__T | __Stack]);
+yeccpars2(265, 'let', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 58, [265 | __Ss], [__T | __Stack]);
+yeccpars2(265, 'fun', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 23, [265 | __Ss], [__T | __Stack]);
+yeccpars2(265, 'do', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 52, [265 | __Ss], [__T | __Stack]);
+yeccpars2(265, 'atom', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 41, [265 | __Ss], [__T | __Stack]);
+yeccpars2(265, '#', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 34, [265 | __Ss], [__T | __Stack]);
+yeccpars2(265, '[', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 37, [265 | __Ss], [__T | __Stack]);
+yeccpars2(265, '{', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 74, [265 | __Ss], [__T | __Stack]);
+yeccpars2(265, 'string', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 69, [265 | __Ss], [__T | __Stack]);
+yeccpars2(265, 'float', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 54, [265 | __Ss], [__T | __Stack]);
+yeccpars2(265, 'integer', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 57, [265 | __Ss], [__T | __Stack]);
+yeccpars2(265, 'char', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 50, [265 | __Ss], [__T | __Stack]);
+yeccpars2(265, '<', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 36, [265 | __Ss], [__T | __Stack]);
+yeccpars2(265, '(', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 35, [265 | __Ss], [__T | __Stack]);
+yeccpars2(265, 'var', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 30, [265 | __Ss], [__T | __Stack]);
+yeccpars2(265, _, _, _, __T, _, _) ->
+ yeccerror(__T);
+yeccpars2(266, __Cat, __Ss, [__5,__4,__3,__2,__1|__Stack], __T, __Ts, __Tzr) ->
+ __Val = #c_fun{vars = [], body = __5},
+ __Nss = lists:nthtail(4, __Ss),
+ yeccpars2(yeccgoto(fun_expr, hd(__Nss)), __Cat, __Nss, [__Val | __Stack], __T, __Ts, __Tzr);
+yeccpars2(267, '-|', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 125, [267 | __Ss], [__T | __Stack]);
+yeccpars2(267, _, _, _, __T, _, _) ->
+ yeccerror(__T);
+yeccpars2(268, '-|', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 269, [268 | __Ss], [__T | __Stack]);
+yeccpars2(268, _, _, _, __T, _, _) ->
+ yeccerror(__T);
+yeccpars2(269, '[', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 126, [269 | __Ss], [__T | __Stack]);
+yeccpars2(269, _, _, _, __T, _, _) ->
+ yeccerror(__T);
+yeccpars2(270, ')', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 271, [270 | __Ss], [__T | __Stack]);
+yeccpars2(270, _, _, _, __T, _, _) ->
+ yeccerror(__T);
+yeccpars2(271, __Cat, __Ss, [__5,__4,__3,__2,__1|__Stack], __T, __Ts, __Tzr) ->
+ __Val = core_lib:set_anno(__2,__4),
+ __Nss = lists:nthtail(4, __Ss),
+ yeccpars2(yeccgoto(anno_fun, hd(__Nss)), __Cat, __Nss, [__Val | __Stack], __T, __Ts, __Tzr);
+yeccpars2(272, '-|', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 273, [272 | __Ss], [__T | __Stack]);
+yeccpars2(272, _, _, _, __T, _, _) ->
+ yeccerror(__T);
+yeccpars2(273, '[', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 126, [273 | __Ss], [__T | __Stack]);
+yeccpars2(273, _, _, _, __T, _, _) ->
+ yeccerror(__T);
+yeccpars2(274, ')', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 275, [274 | __Ss], [__T | __Stack]);
+yeccpars2(274, _, _, _, __T, _, _) ->
+ yeccerror(__T);
+yeccpars2(275, __Cat, __Ss, [__5,__4,__3,__2,__1|__Stack], __T, __Ts, __Tzr) ->
+ __Val = core_lib:set_anno(__2,__4),
+ __Nss = lists:nthtail(4, __Ss),
+ yeccpars2(yeccgoto(anno_function_name, hd(__Nss)), __Cat, __Nss, [__Val | __Stack], __T, __Ts, __Tzr);
+yeccpars2(276, 'atom', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 278, [276 | __Ss], [__T | __Stack]);
+yeccpars2(276, ']', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 277, [276 | __Ss], [__T | __Stack]);
+yeccpars2(276, _, _, _, __T, _, _) ->
+ yeccerror(__T);
+yeccpars2(277, __Cat, __Ss, [__3,__2,__1|__Stack], __T, __Ts, __Tzr) ->
+ __Val = [],
+ __Nss = lists:nthtail(2, __Ss),
+ yeccpars2(yeccgoto(module_attribute, hd(__Nss)), __Cat, __Nss, [__Val | __Stack], __T, __Ts, __Tzr);
+yeccpars2(278, '=', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 284, [278 | __Ss], [__T | __Stack]);
+yeccpars2(278, _, _, _, __T, _, _) ->
+ yeccerror(__T);
+yeccpars2(279, ',', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 282, [279 | __Ss], [__T | __Stack]);
+yeccpars2(279, __Cat, __Ss, [__1|__Stack], __T, __Ts, __Tzr) ->
+ __Val = [__1],
+ yeccpars2(yeccgoto(attribute_list, hd(__Ss)), __Cat, __Ss, [__Val | __Stack], __T, __Ts, __Tzr);
+yeccpars2(280, ']', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 281, [280 | __Ss], [__T | __Stack]);
+yeccpars2(280, _, _, _, __T, _, _) ->
+ yeccerror(__T);
+yeccpars2(281, __Cat, __Ss, [__4,__3,__2,__1|__Stack], __T, __Ts, __Tzr) ->
+ __Val = __3,
+ __Nss = lists:nthtail(3, __Ss),
+ yeccpars2(yeccgoto(module_attribute, hd(__Nss)), __Cat, __Nss, [__Val | __Stack], __T, __Ts, __Tzr);
+yeccpars2(282, 'atom', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 278, [282 | __Ss], [__T | __Stack]);
+yeccpars2(282, _, _, _, __T, _, _) ->
+ yeccerror(__T);
+yeccpars2(283, __Cat, __Ss, [__3,__2,__1|__Stack], __T, __Ts, __Tzr) ->
+ __Val = [__1|__3],
+ __Nss = lists:nthtail(2, __Ss),
+ yeccpars2(yeccgoto(attribute_list, hd(__Nss)), __Cat, __Nss, [__Val | __Stack], __T, __Ts, __Tzr);
+yeccpars2(284, '[', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 285, [284 | __Ss], [__T | __Stack]);
+yeccpars2(284, '{', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 290, [284 | __Ss], [__T | __Stack]);
+yeccpars2(284, 'string', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 69, [284 | __Ss], [__T | __Stack]);
+yeccpars2(284, 'atom', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 104, [284 | __Ss], [__T | __Stack]);
+yeccpars2(284, 'float', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 54, [284 | __Ss], [__T | __Stack]);
+yeccpars2(284, 'integer', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 57, [284 | __Ss], [__T | __Stack]);
+yeccpars2(284, 'char', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 50, [284 | __Ss], [__T | __Stack]);
+yeccpars2(284, _, _, _, __T, _, _) ->
+ yeccerror(__T);
+yeccpars2(285, '[', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 285, [285 | __Ss], [__T | __Stack]);
+yeccpars2(285, '{', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 290, [285 | __Ss], [__T | __Stack]);
+yeccpars2(285, 'string', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 69, [285 | __Ss], [__T | __Stack]);
+yeccpars2(285, 'atom', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 104, [285 | __Ss], [__T | __Stack]);
+yeccpars2(285, 'float', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 54, [285 | __Ss], [__T | __Stack]);
+yeccpars2(285, 'integer', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 57, [285 | __Ss], [__T | __Stack]);
+yeccpars2(285, 'char', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 50, [285 | __Ss], [__T | __Stack]);
+yeccpars2(285, ']', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 149, [285 | __Ss], [__T | __Stack]);
+yeccpars2(285, _, _, _, __T, _, _) ->
+ yeccerror(__T);
+yeccpars2(286, __Cat, __Ss, [__1|__Stack], __T, __Ts, __Tzr) ->
+ __Val = __1,
+ yeccpars2(yeccgoto(literal, hd(__Ss)), __Cat, __Ss, [__Val | __Stack], __T, __Ts, __Tzr);
+yeccpars2(287, __Cat, __Ss, [__1|__Stack], __T, __Ts, __Tzr) ->
+ __Val = __1,
+ yeccpars2(yeccgoto(literal, hd(__Ss)), __Cat, __Ss, [__Val | __Stack], __T, __Ts, __Tzr);
+yeccpars2(288, __Cat, __Ss, [__3,__2,__1|__Stack], __T, __Ts, __Tzr) ->
+ __Val = #c_def{name = #c_atom{val = tok_val(__1)}, val = __3},
+ __Nss = lists:nthtail(2, __Ss),
+ yeccpars2(yeccgoto(attribute, hd(__Nss)), __Cat, __Nss, [__Val | __Stack], __T, __Ts, __Tzr);
+yeccpars2(289, __Cat, __Ss, [__1|__Stack], __T, __Ts, __Tzr) ->
+ __Val = __1,
+ yeccpars2(yeccgoto(literal, hd(__Ss)), __Cat, __Ss, [__Val | __Stack], __T, __Ts, __Tzr);
+yeccpars2(290, '[', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 285, [290 | __Ss], [__T | __Stack]);
+yeccpars2(290, '{', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 290, [290 | __Ss], [__T | __Stack]);
+yeccpars2(290, '}', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 293, [290 | __Ss], [__T | __Stack]);
+yeccpars2(290, 'string', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 69, [290 | __Ss], [__T | __Stack]);
+yeccpars2(290, 'atom', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 104, [290 | __Ss], [__T | __Stack]);
+yeccpars2(290, 'float', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 54, [290 | __Ss], [__T | __Stack]);
+yeccpars2(290, 'integer', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 57, [290 | __Ss], [__T | __Stack]);
+yeccpars2(290, 'char', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 50, [290 | __Ss], [__T | __Stack]);
+yeccpars2(290, _, _, _, __T, _, _) ->
+ yeccerror(__T);
+yeccpars2(291, ',', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 295, [291 | __Ss], [__T | __Stack]);
+yeccpars2(291, __Cat, __Ss, [__1|__Stack], __T, __Ts, __Tzr) ->
+ __Val = [__1],
+ yeccpars2(yeccgoto(literals, hd(__Ss)), __Cat, __Ss, [__Val | __Stack], __T, __Ts, __Tzr);
+yeccpars2(292, '}', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 294, [292 | __Ss], [__T | __Stack]);
+yeccpars2(292, _, _, _, __T, _, _) ->
+ yeccerror(__T);
+yeccpars2(293, __Cat, __Ss, [__2,__1|__Stack], __T, __Ts, __Tzr) ->
+ __Val = #c_tuple{es = []},
+ __Nss = lists:nthtail(1, __Ss),
+ yeccpars2(yeccgoto(tuple_literal, hd(__Nss)), __Cat, __Nss, [__Val | __Stack], __T, __Ts, __Tzr);
+yeccpars2(294, __Cat, __Ss, [__3,__2,__1|__Stack], __T, __Ts, __Tzr) ->
+ __Val = #c_tuple{es = __2},
+ __Nss = lists:nthtail(2, __Ss),
+ yeccpars2(yeccgoto(tuple_literal, hd(__Nss)), __Cat, __Nss, [__Val | __Stack], __T, __Ts, __Tzr);
+yeccpars2(295, '[', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 285, [295 | __Ss], [__T | __Stack]);
+yeccpars2(295, '{', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 290, [295 | __Ss], [__T | __Stack]);
+yeccpars2(295, 'string', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 69, [295 | __Ss], [__T | __Stack]);
+yeccpars2(295, 'atom', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 104, [295 | __Ss], [__T | __Stack]);
+yeccpars2(295, 'float', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 54, [295 | __Ss], [__T | __Stack]);
+yeccpars2(295, 'integer', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 57, [295 | __Ss], [__T | __Stack]);
+yeccpars2(295, 'char', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 50, [295 | __Ss], [__T | __Stack]);
+yeccpars2(295, _, _, _, __T, _, _) ->
+ yeccerror(__T);
+yeccpars2(296, __Cat, __Ss, [__3,__2,__1|__Stack], __T, __Ts, __Tzr) ->
+ __Val = [__1|__3],
+ __Nss = lists:nthtail(2, __Ss),
+ yeccpars2(yeccgoto(literals, hd(__Nss)), __Cat, __Nss, [__Val | __Stack], __T, __Ts, __Tzr);
+yeccpars2(297, ',', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 298, [297 | __Ss], [__T | __Stack]);
+yeccpars2(297, '|', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 301, [297 | __Ss], [__T | __Stack]);
+yeccpars2(297, ']', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 299, [297 | __Ss], [__T | __Stack]);
+yeccpars2(297, _, _, _, __T, _, _) ->
+ yeccerror(__T);
+yeccpars2(298, '[', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 285, [298 | __Ss], [__T | __Stack]);
+yeccpars2(298, '{', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 290, [298 | __Ss], [__T | __Stack]);
+yeccpars2(298, 'string', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 69, [298 | __Ss], [__T | __Stack]);
+yeccpars2(298, 'atom', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 104, [298 | __Ss], [__T | __Stack]);
+yeccpars2(298, 'float', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 54, [298 | __Ss], [__T | __Stack]);
+yeccpars2(298, 'integer', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 57, [298 | __Ss], [__T | __Stack]);
+yeccpars2(298, 'char', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 50, [298 | __Ss], [__T | __Stack]);
+yeccpars2(298, _, _, _, __T, _, _) ->
+ yeccerror(__T);
+yeccpars2(299, __Cat, __Ss, [__1|__Stack], __T, __Ts, __Tzr) ->
+ __Val = #c_nil{},
+ yeccpars2(yeccgoto(tail_literal, hd(__Ss)), __Cat, __Ss, [__Val | __Stack], __T, __Ts, __Tzr);
+yeccpars2(300, __Cat, __Ss, [__3,__2,__1|__Stack], __T, __Ts, __Tzr) ->
+ __Val = #c_cons{hd = __2, tl = __3},
+ __Nss = lists:nthtail(2, __Ss),
+ yeccpars2(yeccgoto(cons_literal, hd(__Nss)), __Cat, __Nss, [__Val | __Stack], __T, __Ts, __Tzr);
+yeccpars2(301, '[', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 285, [301 | __Ss], [__T | __Stack]);
+yeccpars2(301, '{', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 290, [301 | __Ss], [__T | __Stack]);
+yeccpars2(301, 'string', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 69, [301 | __Ss], [__T | __Stack]);
+yeccpars2(301, 'atom', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 104, [301 | __Ss], [__T | __Stack]);
+yeccpars2(301, 'float', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 54, [301 | __Ss], [__T | __Stack]);
+yeccpars2(301, 'integer', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 57, [301 | __Ss], [__T | __Stack]);
+yeccpars2(301, 'char', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 50, [301 | __Ss], [__T | __Stack]);
+yeccpars2(301, _, _, _, __T, _, _) ->
+ yeccerror(__T);
+yeccpars2(302, ']', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 303, [302 | __Ss], [__T | __Stack]);
+yeccpars2(302, _, _, _, __T, _, _) ->
+ yeccerror(__T);
+yeccpars2(303, __Cat, __Ss, [__3,__2,__1|__Stack], __T, __Ts, __Tzr) ->
+ __Val = __2,
+ __Nss = lists:nthtail(2, __Ss),
+ yeccpars2(yeccgoto(tail_literal, hd(__Nss)), __Cat, __Nss, [__Val | __Stack], __T, __Ts, __Tzr);
+yeccpars2(304, ',', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 298, [304 | __Ss], [__T | __Stack]);
+yeccpars2(304, '|', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 301, [304 | __Ss], [__T | __Stack]);
+yeccpars2(304, ']', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 299, [304 | __Ss], [__T | __Stack]);
+yeccpars2(304, _, _, _, __T, _, _) ->
+ yeccerror(__T);
+yeccpars2(305, __Cat, __Ss, [__3,__2,__1|__Stack], __T, __Ts, __Tzr) ->
+ __Val = #c_cons{hd = __2, tl = __3},
+ __Nss = lists:nthtail(2, __Ss),
+ yeccpars2(yeccgoto(tail_literal, hd(__Nss)), __Cat, __Nss, [__Val | __Stack], __T, __Ts, __Tzr);
+yeccpars2(306, __Cat, __Ss, [__2,__1|__Stack], __T, __Ts, __Tzr) ->
+ __Val = [],
+ __Nss = lists:nthtail(1, __Ss),
+ yeccpars2(yeccgoto(module_export, hd(__Nss)), __Cat, __Nss, [__Val | __Stack], __T, __Ts, __Tzr);
+yeccpars2(307, ',', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 311, [307 | __Ss], [__T | __Stack]);
+yeccpars2(307, __Cat, __Ss, [__1|__Stack], __T, __Ts, __Tzr) ->
+ __Val = [__1],
+ yeccpars2(yeccgoto(exported_names, hd(__Ss)), __Cat, __Ss, [__Val | __Stack], __T, __Ts, __Tzr);
+yeccpars2(308, ']', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 310, [308 | __Ss], [__T | __Stack]);
+yeccpars2(308, _, _, _, __T, _, _) ->
+ yeccerror(__T);
+yeccpars2(309, __Cat, __Ss, [__1|__Stack], __T, __Ts, __Tzr) ->
+ __Val = __1,
+ yeccpars2(yeccgoto(exported_name, hd(__Ss)), __Cat, __Ss, [__Val | __Stack], __T, __Ts, __Tzr);
+yeccpars2(310, __Cat, __Ss, [__3,__2,__1|__Stack], __T, __Ts, __Tzr) ->
+ __Val = __2,
+ __Nss = lists:nthtail(2, __Ss),
+ yeccpars2(yeccgoto(module_export, hd(__Nss)), __Cat, __Nss, [__Val | __Stack], __T, __Ts, __Tzr);
+yeccpars2(311, 'atom', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 11, [311 | __Ss], [__T | __Stack]);
+yeccpars2(311, _, _, _, __T, _, _) ->
+ yeccerror(__T);
+yeccpars2(312, __Cat, __Ss, [__3,__2,__1|__Stack], __T, __Ts, __Tzr) ->
+ __Val = [__1|__3],
+ __Nss = lists:nthtail(2, __Ss),
+ yeccpars2(yeccgoto(exported_names, hd(__Nss)), __Cat, __Nss, [__Val | __Stack], __T, __Ts, __Tzr);
+yeccpars2(313, 'atom', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 314, [313 | __Ss], [__T | __Stack]);
+yeccpars2(313, _, _, _, __T, _, _) ->
+ yeccerror(__T);
+yeccpars2(314, '[', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 5, [314 | __Ss], [__T | __Stack]);
+yeccpars2(314, _, _, _, __T, _, _) ->
+ yeccerror(__T);
+yeccpars2(315, 'attributes', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 7, [315 | __Ss], [__T | __Stack]);
+yeccpars2(315, _, _, _, __T, _, _) ->
+ yeccerror(__T);
+yeccpars2(316, '(', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 9, [316 | __Ss], [__T | __Stack]);
+yeccpars2(316, 'atom', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 11, [316 | __Ss], [__T | __Stack]);
+yeccpars2(316, __Cat, __Ss, __Stack, __T, __Ts, __Tzr) ->
+ __Val = [],
+ yeccpars2(13, __Cat, [316 | __Ss], [__Val | __Stack], __T, __Ts, __Tzr);
+yeccpars2(317, 'end', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 318, [317 | __Ss], [__T | __Stack]);
+yeccpars2(317, _, _, _, __T, _, _) ->
+ yeccerror(__T);
+yeccpars2(318, '-|', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 319, [318 | __Ss], [__T | __Stack]);
+yeccpars2(318, _, _, _, __T, _, _) ->
+ yeccerror(__T);
+yeccpars2(319, '[', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 126, [319 | __Ss], [__T | __Stack]);
+yeccpars2(319, _, _, _, __T, _, _) ->
+ yeccerror(__T);
+yeccpars2(320, ')', __Ss, __Stack, __T, __Ts, __Tzr) ->
+ yeccpars1(__Ts, __Tzr, 321, [320 | __Ss], [__T | __Stack]);
+yeccpars2(320, _, _, _, __T, _, _) ->
+ yeccerror(__T);
+yeccpars2(321, __Cat, __Ss, [__10,__9,__8,__7,__6,__5,__4,__3,__2,__1|__Stack], __T, __Ts, __Tzr) ->
+ __Val = #c_module{anno = __9, name = tok_val(__3), exports = __4, attrs = __5, defs = __6},
+ __Nss = lists:nthtail(9, __Ss),
+ yeccpars2(yeccgoto(module_definition, hd(__Nss)), __Cat, __Nss, [__Val | __Stack], __T, __Ts, __Tzr);
+yeccpars2(__Other, _, _, _, _, _, _) ->
+ exit({parser, __Other, missing_state_in_action_table}).
+
+yeccgoto(anno_clause, 65) ->
+ 100;
+yeccgoto(anno_clause, 100) ->
+ 100;
+yeccgoto(anno_clause, 222) ->
+ 100;
+yeccgoto(anno_clauses, 65) ->
+ 101;
+yeccgoto(anno_clauses, 100) ->
+ 169;
+yeccgoto(anno_clauses, 222) ->
+ 223;
+yeccgoto(anno_expression, 33) ->
+ 38;
+yeccgoto(anno_expression, 36) ->
+ 75;
+yeccgoto(anno_expression, 37) ->
+ 231;
+yeccgoto(anno_expression, 40) ->
+ 229;
+yeccgoto(anno_expression, 44) ->
+ 225;
+yeccgoto(anno_expression, 46) ->
+ 221;
+yeccgoto(anno_expression, 48) ->
+ 220;
+yeccgoto(anno_expression, 52) ->
+ 218;
+yeccgoto(anno_expression, 70) ->
+ 81;
+yeccgoto(anno_expression, 74) ->
+ 75;
+yeccgoto(anno_expression, 79) ->
+ 75;
+yeccgoto(anno_expression, 86) ->
+ 87;
+yeccgoto(anno_expression, 90) ->
+ 91;
+yeccgoto(anno_expression, 99) ->
+ 170;
+yeccgoto(anno_expression, 164) ->
+ 165;
+yeccgoto(anno_expression, 166) ->
+ 167;
+yeccgoto(anno_expression, 171) ->
+ 172;
+yeccgoto(anno_expression, 203) ->
+ 75;
+yeccgoto(anno_expression, 211) ->
+ 212;
+yeccgoto(anno_expression, 214) ->
+ 215;
+yeccgoto(anno_expression, 216) ->
+ 217;
+yeccgoto(anno_expression, 218) ->
+ 219;
+yeccgoto(anno_expression, 226) ->
+ 227;
+yeccgoto(anno_expression, 232) ->
+ 238;
+yeccgoto(anno_expression, 235) ->
+ 236;
+yeccgoto(anno_expression, 257) ->
+ 258;
+yeccgoto(anno_expression, 260) ->
+ 75;
+yeccgoto(anno_expression, 265) ->
+ 266;
+yeccgoto(anno_expressions, 36) ->
+ 241;
+yeccgoto(anno_expressions, 74) ->
+ 76;
+yeccgoto(anno_expressions, 79) ->
+ 80;
+yeccgoto(anno_expressions, 203) ->
+ 206;
+yeccgoto(anno_expressions, 260) ->
+ 261;
+yeccgoto(anno_fun, 20) ->
+ 22;
+yeccgoto(anno_function_name, 8) ->
+ 10;
+yeccgoto(anno_function_name, 12) ->
+ 10;
+yeccgoto(anno_function_name, 60) ->
+ 10;
+yeccgoto(anno_function_name, 316) ->
+ 10;
+yeccgoto(anno_pattern, 65) ->
+ 102;
+yeccgoto(anno_pattern, 96) ->
+ 102;
+yeccgoto(anno_pattern, 97) ->
+ 116;
+yeccgoto(anno_pattern, 98) ->
+ 173;
+yeccgoto(anno_pattern, 100) ->
+ 102;
+yeccgoto(anno_pattern, 114) ->
+ 116;
+yeccgoto(anno_pattern, 120) ->
+ 116;
+yeccgoto(anno_pattern, 162) ->
+ 163;
+yeccgoto(anno_pattern, 174) ->
+ 180;
+yeccgoto(anno_pattern, 177) ->
+ 178;
+yeccgoto(anno_pattern, 200) ->
+ 201;
+yeccgoto(anno_pattern, 222) ->
+ 102;
+yeccgoto(anno_patterns, 97) ->
+ 183;
+yeccgoto(anno_patterns, 114) ->
+ 117;
+yeccgoto(anno_patterns, 120) ->
+ 121;
+yeccgoto(anno_variable, 25) ->
+ 28;
+yeccgoto(anno_variable, 58) ->
+ 84;
+yeccgoto(anno_variable, 65) ->
+ 103;
+yeccgoto(anno_variable, 82) ->
+ 84;
+yeccgoto(anno_variable, 83) ->
+ 28;
+yeccgoto(anno_variable, 88) ->
+ 84;
+yeccgoto(anno_variable, 96) ->
+ 103;
+yeccgoto(anno_variable, 97) ->
+ 103;
+yeccgoto(anno_variable, 98) ->
+ 103;
+yeccgoto(anno_variable, 100) ->
+ 103;
+yeccgoto(anno_variable, 114) ->
+ 103;
+yeccgoto(anno_variable, 115) ->
+ 122;
+yeccgoto(anno_variable, 120) ->
+ 103;
+yeccgoto(anno_variable, 162) ->
+ 103;
+yeccgoto(anno_variable, 174) ->
+ 103;
+yeccgoto(anno_variable, 177) ->
+ 103;
+yeccgoto(anno_variable, 200) ->
+ 103;
+yeccgoto(anno_variable, 222) ->
+ 103;
+yeccgoto(anno_variable, 263) ->
+ 28;
+yeccgoto(anno_variables, 25) ->
+ 29;
+yeccgoto(anno_variables, 83) ->
+ 93;
+yeccgoto(anno_variables, 263) ->
+ 264;
+yeccgoto(annotation, 125) ->
+ 127;
+yeccgoto(annotation, 159) ->
+ 160;
+yeccgoto(annotation, 187) ->
+ 188;
+yeccgoto(annotation, 244) ->
+ 245;
+yeccgoto(annotation, 269) ->
+ 270;
+yeccgoto(annotation, 273) ->
+ 274;
+yeccgoto(annotation, 319) ->
+ 320;
+yeccgoto(application_expr, 33) ->
+ 39;
+yeccgoto(application_expr, 35) ->
+ 39;
+yeccgoto(application_expr, 36) ->
+ 39;
+yeccgoto(application_expr, 37) ->
+ 39;
+yeccgoto(application_expr, 40) ->
+ 39;
+yeccgoto(application_expr, 44) ->
+ 39;
+yeccgoto(application_expr, 46) ->
+ 39;
+yeccgoto(application_expr, 48) ->
+ 39;
+yeccgoto(application_expr, 52) ->
+ 39;
+yeccgoto(application_expr, 70) ->
+ 39;
+yeccgoto(application_expr, 74) ->
+ 39;
+yeccgoto(application_expr, 79) ->
+ 39;
+yeccgoto(application_expr, 86) ->
+ 39;
+yeccgoto(application_expr, 90) ->
+ 39;
+yeccgoto(application_expr, 99) ->
+ 39;
+yeccgoto(application_expr, 164) ->
+ 39;
+yeccgoto(application_expr, 166) ->
+ 39;
+yeccgoto(application_expr, 171) ->
+ 39;
+yeccgoto(application_expr, 203) ->
+ 39;
+yeccgoto(application_expr, 211) ->
+ 39;
+yeccgoto(application_expr, 214) ->
+ 39;
+yeccgoto(application_expr, 216) ->
+ 39;
+yeccgoto(application_expr, 218) ->
+ 39;
+yeccgoto(application_expr, 226) ->
+ 39;
+yeccgoto(application_expr, 232) ->
+ 39;
+yeccgoto(application_expr, 235) ->
+ 39;
+yeccgoto(application_expr, 257) ->
+ 39;
+yeccgoto(application_expr, 260) ->
+ 39;
+yeccgoto(application_expr, 265) ->
+ 39;
+yeccgoto(arg_list, 202) ->
+ 204;
+yeccgoto(arg_list, 208) ->
+ 209;
+yeccgoto(arg_list, 227) ->
+ 228;
+yeccgoto(arg_list, 229) ->
+ 230;
+yeccgoto(atomic_constant, 126) ->
+ 132;
+yeccgoto(atomic_constant, 129) ->
+ 132;
+yeccgoto(atomic_constant, 142) ->
+ 132;
+yeccgoto(atomic_constant, 147) ->
+ 132;
+yeccgoto(atomic_constant, 151) ->
+ 132;
+yeccgoto(atomic_constant, 154) ->
+ 132;
+yeccgoto(atomic_literal, 33) ->
+ 42;
+yeccgoto(atomic_literal, 35) ->
+ 42;
+yeccgoto(atomic_literal, 36) ->
+ 42;
+yeccgoto(atomic_literal, 37) ->
+ 42;
+yeccgoto(atomic_literal, 40) ->
+ 42;
+yeccgoto(atomic_literal, 44) ->
+ 42;
+yeccgoto(atomic_literal, 46) ->
+ 42;
+yeccgoto(atomic_literal, 48) ->
+ 42;
+yeccgoto(atomic_literal, 52) ->
+ 42;
+yeccgoto(atomic_literal, 65) ->
+ 105;
+yeccgoto(atomic_literal, 70) ->
+ 42;
+yeccgoto(atomic_literal, 74) ->
+ 42;
+yeccgoto(atomic_literal, 79) ->
+ 42;
+yeccgoto(atomic_literal, 86) ->
+ 42;
+yeccgoto(atomic_literal, 90) ->
+ 42;
+yeccgoto(atomic_literal, 96) ->
+ 105;
+yeccgoto(atomic_literal, 97) ->
+ 105;
+yeccgoto(atomic_literal, 98) ->
+ 105;
+yeccgoto(atomic_literal, 99) ->
+ 42;
+yeccgoto(atomic_literal, 100) ->
+ 105;
+yeccgoto(atomic_literal, 114) ->
+ 105;
+yeccgoto(atomic_literal, 115) ->
+ 105;
+yeccgoto(atomic_literal, 120) ->
+ 105;
+yeccgoto(atomic_literal, 162) ->
+ 105;
+yeccgoto(atomic_literal, 164) ->
+ 42;
+yeccgoto(atomic_literal, 166) ->
+ 42;
+yeccgoto(atomic_literal, 171) ->
+ 42;
+yeccgoto(atomic_literal, 174) ->
+ 105;
+yeccgoto(atomic_literal, 177) ->
+ 105;
+yeccgoto(atomic_literal, 200) ->
+ 105;
+yeccgoto(atomic_literal, 203) ->
+ 42;
+yeccgoto(atomic_literal, 211) ->
+ 42;
+yeccgoto(atomic_literal, 214) ->
+ 42;
+yeccgoto(atomic_literal, 216) ->
+ 42;
+yeccgoto(atomic_literal, 218) ->
+ 42;
+yeccgoto(atomic_literal, 222) ->
+ 105;
+yeccgoto(atomic_literal, 226) ->
+ 42;
+yeccgoto(atomic_literal, 232) ->
+ 42;
+yeccgoto(atomic_literal, 235) ->
+ 42;
+yeccgoto(atomic_literal, 257) ->
+ 42;
+yeccgoto(atomic_literal, 260) ->
+ 42;
+yeccgoto(atomic_literal, 265) ->
+ 42;
+yeccgoto(atomic_literal, 284) ->
+ 286;
+yeccgoto(atomic_literal, 285) ->
+ 286;
+yeccgoto(atomic_literal, 290) ->
+ 286;
+yeccgoto(atomic_literal, 295) ->
+ 286;
+yeccgoto(atomic_literal, 298) ->
+ 286;
+yeccgoto(atomic_literal, 301) ->
+ 286;
+yeccgoto(atomic_pattern, 65) ->
+ 106;
+yeccgoto(atomic_pattern, 96) ->
+ 106;
+yeccgoto(atomic_pattern, 97) ->
+ 106;
+yeccgoto(atomic_pattern, 98) ->
+ 106;
+yeccgoto(atomic_pattern, 100) ->
+ 106;
+yeccgoto(atomic_pattern, 114) ->
+ 106;
+yeccgoto(atomic_pattern, 115) ->
+ 106;
+yeccgoto(atomic_pattern, 120) ->
+ 106;
+yeccgoto(atomic_pattern, 162) ->
+ 106;
+yeccgoto(atomic_pattern, 174) ->
+ 106;
+yeccgoto(atomic_pattern, 177) ->
+ 106;
+yeccgoto(atomic_pattern, 200) ->
+ 106;
+yeccgoto(atomic_pattern, 222) ->
+ 106;
+yeccgoto(attribute, 276) ->
+ 279;
+yeccgoto(attribute, 282) ->
+ 279;
+yeccgoto(attribute_list, 276) ->
+ 280;
+yeccgoto(attribute_list, 282) ->
+ 283;
+yeccgoto(binary, 33) ->
+ 43;
+yeccgoto(binary, 35) ->
+ 43;
+yeccgoto(binary, 36) ->
+ 43;
+yeccgoto(binary, 37) ->
+ 43;
+yeccgoto(binary, 40) ->
+ 43;
+yeccgoto(binary, 44) ->
+ 43;
+yeccgoto(binary, 46) ->
+ 43;
+yeccgoto(binary, 48) ->
+ 43;
+yeccgoto(binary, 52) ->
+ 43;
+yeccgoto(binary, 70) ->
+ 43;
+yeccgoto(binary, 74) ->
+ 43;
+yeccgoto(binary, 79) ->
+ 43;
+yeccgoto(binary, 86) ->
+ 43;
+yeccgoto(binary, 90) ->
+ 43;
+yeccgoto(binary, 99) ->
+ 43;
+yeccgoto(binary, 164) ->
+ 43;
+yeccgoto(binary, 166) ->
+ 43;
+yeccgoto(binary, 171) ->
+ 43;
+yeccgoto(binary, 203) ->
+ 43;
+yeccgoto(binary, 211) ->
+ 43;
+yeccgoto(binary, 214) ->
+ 43;
+yeccgoto(binary, 216) ->
+ 43;
+yeccgoto(binary, 218) ->
+ 43;
+yeccgoto(binary, 226) ->
+ 43;
+yeccgoto(binary, 232) ->
+ 43;
+yeccgoto(binary, 235) ->
+ 43;
+yeccgoto(binary, 257) ->
+ 43;
+yeccgoto(binary, 260) ->
+ 43;
+yeccgoto(binary, 265) ->
+ 43;
+yeccgoto(binary_pattern, 65) ->
+ 107;
+yeccgoto(binary_pattern, 96) ->
+ 107;
+yeccgoto(binary_pattern, 97) ->
+ 107;
+yeccgoto(binary_pattern, 98) ->
+ 107;
+yeccgoto(binary_pattern, 100) ->
+ 107;
+yeccgoto(binary_pattern, 114) ->
+ 107;
+yeccgoto(binary_pattern, 115) ->
+ 107;
+yeccgoto(binary_pattern, 120) ->
+ 107;
+yeccgoto(binary_pattern, 162) ->
+ 107;
+yeccgoto(binary_pattern, 174) ->
+ 107;
+yeccgoto(binary_pattern, 177) ->
+ 107;
+yeccgoto(binary_pattern, 200) ->
+ 107;
+yeccgoto(binary_pattern, 222) ->
+ 107;
+yeccgoto(call_expr, 33) ->
+ 45;
+yeccgoto(call_expr, 35) ->
+ 45;
+yeccgoto(call_expr, 36) ->
+ 45;
+yeccgoto(call_expr, 37) ->
+ 45;
+yeccgoto(call_expr, 40) ->
+ 45;
+yeccgoto(call_expr, 44) ->
+ 45;
+yeccgoto(call_expr, 46) ->
+ 45;
+yeccgoto(call_expr, 48) ->
+ 45;
+yeccgoto(call_expr, 52) ->
+ 45;
+yeccgoto(call_expr, 70) ->
+ 45;
+yeccgoto(call_expr, 74) ->
+ 45;
+yeccgoto(call_expr, 79) ->
+ 45;
+yeccgoto(call_expr, 86) ->
+ 45;
+yeccgoto(call_expr, 90) ->
+ 45;
+yeccgoto(call_expr, 99) ->
+ 45;
+yeccgoto(call_expr, 164) ->
+ 45;
+yeccgoto(call_expr, 166) ->
+ 45;
+yeccgoto(call_expr, 171) ->
+ 45;
+yeccgoto(call_expr, 203) ->
+ 45;
+yeccgoto(call_expr, 211) ->
+ 45;
+yeccgoto(call_expr, 214) ->
+ 45;
+yeccgoto(call_expr, 216) ->
+ 45;
+yeccgoto(call_expr, 218) ->
+ 45;
+yeccgoto(call_expr, 226) ->
+ 45;
+yeccgoto(call_expr, 232) ->
+ 45;
+yeccgoto(call_expr, 235) ->
+ 45;
+yeccgoto(call_expr, 257) ->
+ 45;
+yeccgoto(call_expr, 260) ->
+ 45;
+yeccgoto(call_expr, 265) ->
+ 45;
+yeccgoto(case_expr, 33) ->
+ 47;
+yeccgoto(case_expr, 35) ->
+ 47;
+yeccgoto(case_expr, 36) ->
+ 47;
+yeccgoto(case_expr, 37) ->
+ 47;
+yeccgoto(case_expr, 40) ->
+ 47;
+yeccgoto(case_expr, 44) ->
+ 47;
+yeccgoto(case_expr, 46) ->
+ 47;
+yeccgoto(case_expr, 48) ->
+ 47;
+yeccgoto(case_expr, 52) ->
+ 47;
+yeccgoto(case_expr, 70) ->
+ 47;
+yeccgoto(case_expr, 74) ->
+ 47;
+yeccgoto(case_expr, 79) ->
+ 47;
+yeccgoto(case_expr, 86) ->
+ 47;
+yeccgoto(case_expr, 90) ->
+ 47;
+yeccgoto(case_expr, 99) ->
+ 47;
+yeccgoto(case_expr, 164) ->
+ 47;
+yeccgoto(case_expr, 166) ->
+ 47;
+yeccgoto(case_expr, 171) ->
+ 47;
+yeccgoto(case_expr, 203) ->
+ 47;
+yeccgoto(case_expr, 211) ->
+ 47;
+yeccgoto(case_expr, 214) ->
+ 47;
+yeccgoto(case_expr, 216) ->
+ 47;
+yeccgoto(case_expr, 218) ->
+ 47;
+yeccgoto(case_expr, 226) ->
+ 47;
+yeccgoto(case_expr, 232) ->
+ 47;
+yeccgoto(case_expr, 235) ->
+ 47;
+yeccgoto(case_expr, 257) ->
+ 47;
+yeccgoto(case_expr, 260) ->
+ 47;
+yeccgoto(case_expr, 265) ->
+ 47;
+yeccgoto(catch_expr, 33) ->
+ 49;
+yeccgoto(catch_expr, 35) ->
+ 49;
+yeccgoto(catch_expr, 36) ->
+ 49;
+yeccgoto(catch_expr, 37) ->
+ 49;
+yeccgoto(catch_expr, 40) ->
+ 49;
+yeccgoto(catch_expr, 44) ->
+ 49;
+yeccgoto(catch_expr, 46) ->
+ 49;
+yeccgoto(catch_expr, 48) ->
+ 49;
+yeccgoto(catch_expr, 52) ->
+ 49;
+yeccgoto(catch_expr, 70) ->
+ 49;
+yeccgoto(catch_expr, 74) ->
+ 49;
+yeccgoto(catch_expr, 79) ->
+ 49;
+yeccgoto(catch_expr, 86) ->
+ 49;
+yeccgoto(catch_expr, 90) ->
+ 49;
+yeccgoto(catch_expr, 99) ->
+ 49;
+yeccgoto(catch_expr, 164) ->
+ 49;
+yeccgoto(catch_expr, 166) ->
+ 49;
+yeccgoto(catch_expr, 171) ->
+ 49;
+yeccgoto(catch_expr, 203) ->
+ 49;
+yeccgoto(catch_expr, 211) ->
+ 49;
+yeccgoto(catch_expr, 214) ->
+ 49;
+yeccgoto(catch_expr, 216) ->
+ 49;
+yeccgoto(catch_expr, 218) ->
+ 49;
+yeccgoto(catch_expr, 226) ->
+ 49;
+yeccgoto(catch_expr, 232) ->
+ 49;
+yeccgoto(catch_expr, 235) ->
+ 49;
+yeccgoto(catch_expr, 257) ->
+ 49;
+yeccgoto(catch_expr, 260) ->
+ 49;
+yeccgoto(catch_expr, 265) ->
+ 49;
+yeccgoto(clause, 65) ->
+ 108;
+yeccgoto(clause, 96) ->
+ 185;
+yeccgoto(clause, 100) ->
+ 108;
+yeccgoto(clause, 222) ->
+ 108;
+yeccgoto(clause_pattern, 65) ->
+ 109;
+yeccgoto(clause_pattern, 96) ->
+ 109;
+yeccgoto(clause_pattern, 100) ->
+ 109;
+yeccgoto(clause_pattern, 222) ->
+ 109;
+yeccgoto(cons, 33) ->
+ 51;
+yeccgoto(cons, 35) ->
+ 51;
+yeccgoto(cons, 36) ->
+ 51;
+yeccgoto(cons, 37) ->
+ 51;
+yeccgoto(cons, 40) ->
+ 51;
+yeccgoto(cons, 44) ->
+ 51;
+yeccgoto(cons, 46) ->
+ 51;
+yeccgoto(cons, 48) ->
+ 51;
+yeccgoto(cons, 52) ->
+ 51;
+yeccgoto(cons, 70) ->
+ 51;
+yeccgoto(cons, 74) ->
+ 51;
+yeccgoto(cons, 79) ->
+ 51;
+yeccgoto(cons, 86) ->
+ 51;
+yeccgoto(cons, 90) ->
+ 51;
+yeccgoto(cons, 99) ->
+ 51;
+yeccgoto(cons, 164) ->
+ 51;
+yeccgoto(cons, 166) ->
+ 51;
+yeccgoto(cons, 171) ->
+ 51;
+yeccgoto(cons, 203) ->
+ 51;
+yeccgoto(cons, 211) ->
+ 51;
+yeccgoto(cons, 214) ->
+ 51;
+yeccgoto(cons, 216) ->
+ 51;
+yeccgoto(cons, 218) ->
+ 51;
+yeccgoto(cons, 226) ->
+ 51;
+yeccgoto(cons, 232) ->
+ 51;
+yeccgoto(cons, 235) ->
+ 51;
+yeccgoto(cons, 257) ->
+ 51;
+yeccgoto(cons, 260) ->
+ 51;
+yeccgoto(cons, 265) ->
+ 51;
+yeccgoto(cons_constant, 126) ->
+ 134;
+yeccgoto(cons_constant, 129) ->
+ 134;
+yeccgoto(cons_constant, 142) ->
+ 134;
+yeccgoto(cons_constant, 147) ->
+ 134;
+yeccgoto(cons_constant, 151) ->
+ 134;
+yeccgoto(cons_constant, 154) ->
+ 134;
+yeccgoto(cons_literal, 284) ->
+ 287;
+yeccgoto(cons_literal, 285) ->
+ 287;
+yeccgoto(cons_literal, 290) ->
+ 287;
+yeccgoto(cons_literal, 295) ->
+ 287;
+yeccgoto(cons_literal, 298) ->
+ 287;
+yeccgoto(cons_literal, 301) ->
+ 287;
+yeccgoto(cons_pattern, 65) ->
+ 110;
+yeccgoto(cons_pattern, 96) ->
+ 110;
+yeccgoto(cons_pattern, 97) ->
+ 110;
+yeccgoto(cons_pattern, 98) ->
+ 110;
+yeccgoto(cons_pattern, 100) ->
+ 110;
+yeccgoto(cons_pattern, 114) ->
+ 110;
+yeccgoto(cons_pattern, 115) ->
+ 110;
+yeccgoto(cons_pattern, 120) ->
+ 110;
+yeccgoto(cons_pattern, 162) ->
+ 110;
+yeccgoto(cons_pattern, 174) ->
+ 110;
+yeccgoto(cons_pattern, 177) ->
+ 110;
+yeccgoto(cons_pattern, 200) ->
+ 110;
+yeccgoto(cons_pattern, 222) ->
+ 110;
+yeccgoto(constant, 126) ->
+ 135;
+yeccgoto(constant, 129) ->
+ 150;
+yeccgoto(constant, 142) ->
+ 135;
+yeccgoto(constant, 147) ->
+ 135;
+yeccgoto(constant, 151) ->
+ 157;
+yeccgoto(constant, 154) ->
+ 155;
+yeccgoto(constants, 126) ->
+ 136;
+yeccgoto(constants, 142) ->
+ 143;
+yeccgoto(constants, 147) ->
+ 148;
+yeccgoto(exported_name, 5) ->
+ 307;
+yeccgoto(exported_name, 311) ->
+ 307;
+yeccgoto(exported_names, 5) ->
+ 308;
+yeccgoto(exported_names, 311) ->
+ 312;
+yeccgoto(expression, 33) ->
+ 53;
+yeccgoto(expression, 35) ->
+ 243;
+yeccgoto(expression, 36) ->
+ 53;
+yeccgoto(expression, 37) ->
+ 53;
+yeccgoto(expression, 40) ->
+ 53;
+yeccgoto(expression, 44) ->
+ 53;
+yeccgoto(expression, 46) ->
+ 53;
+yeccgoto(expression, 48) ->
+ 53;
+yeccgoto(expression, 52) ->
+ 53;
+yeccgoto(expression, 70) ->
+ 53;
+yeccgoto(expression, 74) ->
+ 53;
+yeccgoto(expression, 79) ->
+ 53;
+yeccgoto(expression, 86) ->
+ 53;
+yeccgoto(expression, 90) ->
+ 53;
+yeccgoto(expression, 99) ->
+ 53;
+yeccgoto(expression, 164) ->
+ 53;
+yeccgoto(expression, 166) ->
+ 53;
+yeccgoto(expression, 171) ->
+ 53;
+yeccgoto(expression, 203) ->
+ 53;
+yeccgoto(expression, 211) ->
+ 53;
+yeccgoto(expression, 214) ->
+ 53;
+yeccgoto(expression, 216) ->
+ 53;
+yeccgoto(expression, 218) ->
+ 53;
+yeccgoto(expression, 226) ->
+ 53;
+yeccgoto(expression, 232) ->
+ 53;
+yeccgoto(expression, 235) ->
+ 53;
+yeccgoto(expression, 257) ->
+ 53;
+yeccgoto(expression, 260) ->
+ 53;
+yeccgoto(expression, 265) ->
+ 53;
+yeccgoto(fun_expr, 20) ->
+ 24;
+yeccgoto(fun_expr, 21) ->
+ 268;
+yeccgoto(fun_expr, 33) ->
+ 55;
+yeccgoto(fun_expr, 35) ->
+ 55;
+yeccgoto(fun_expr, 36) ->
+ 55;
+yeccgoto(fun_expr, 37) ->
+ 55;
+yeccgoto(fun_expr, 40) ->
+ 55;
+yeccgoto(fun_expr, 44) ->
+ 55;
+yeccgoto(fun_expr, 46) ->
+ 55;
+yeccgoto(fun_expr, 48) ->
+ 55;
+yeccgoto(fun_expr, 52) ->
+ 55;
+yeccgoto(fun_expr, 70) ->
+ 55;
+yeccgoto(fun_expr, 74) ->
+ 55;
+yeccgoto(fun_expr, 79) ->
+ 55;
+yeccgoto(fun_expr, 86) ->
+ 55;
+yeccgoto(fun_expr, 90) ->
+ 55;
+yeccgoto(fun_expr, 99) ->
+ 55;
+yeccgoto(fun_expr, 164) ->
+ 55;
+yeccgoto(fun_expr, 166) ->
+ 55;
+yeccgoto(fun_expr, 171) ->
+ 55;
+yeccgoto(fun_expr, 203) ->
+ 55;
+yeccgoto(fun_expr, 211) ->
+ 55;
+yeccgoto(fun_expr, 214) ->
+ 55;
+yeccgoto(fun_expr, 216) ->
+ 55;
+yeccgoto(fun_expr, 218) ->
+ 55;
+yeccgoto(fun_expr, 226) ->
+ 55;
+yeccgoto(fun_expr, 232) ->
+ 55;
+yeccgoto(fun_expr, 235) ->
+ 55;
+yeccgoto(fun_expr, 257) ->
+ 55;
+yeccgoto(fun_expr, 260) ->
+ 55;
+yeccgoto(fun_expr, 265) ->
+ 55;
+yeccgoto(function_definition, 8) ->
+ 12;
+yeccgoto(function_definition, 12) ->
+ 12;
+yeccgoto(function_definition, 60) ->
+ 12;
+yeccgoto(function_definition, 316) ->
+ 12;
+yeccgoto(function_definitions, 8) ->
+ 13;
+yeccgoto(function_definitions, 12) ->
+ 17;
+yeccgoto(function_definitions, 60) ->
+ 210;
+yeccgoto(function_definitions, 316) ->
+ 13;
+yeccgoto(function_name, 5) ->
+ 309;
+yeccgoto(function_name, 8) ->
+ 14;
+yeccgoto(function_name, 9) ->
+ 272;
+yeccgoto(function_name, 12) ->
+ 14;
+yeccgoto(function_name, 33) ->
+ 56;
+yeccgoto(function_name, 35) ->
+ 56;
+yeccgoto(function_name, 36) ->
+ 56;
+yeccgoto(function_name, 37) ->
+ 56;
+yeccgoto(function_name, 40) ->
+ 56;
+yeccgoto(function_name, 44) ->
+ 56;
+yeccgoto(function_name, 46) ->
+ 56;
+yeccgoto(function_name, 48) ->
+ 56;
+yeccgoto(function_name, 52) ->
+ 56;
+yeccgoto(function_name, 60) ->
+ 14;
+yeccgoto(function_name, 70) ->
+ 56;
+yeccgoto(function_name, 74) ->
+ 56;
+yeccgoto(function_name, 79) ->
+ 56;
+yeccgoto(function_name, 86) ->
+ 56;
+yeccgoto(function_name, 90) ->
+ 56;
+yeccgoto(function_name, 99) ->
+ 56;
+yeccgoto(function_name, 164) ->
+ 56;
+yeccgoto(function_name, 166) ->
+ 56;
+yeccgoto(function_name, 171) ->
+ 56;
+yeccgoto(function_name, 203) ->
+ 56;
+yeccgoto(function_name, 211) ->
+ 56;
+yeccgoto(function_name, 214) ->
+ 56;
+yeccgoto(function_name, 216) ->
+ 56;
+yeccgoto(function_name, 218) ->
+ 56;
+yeccgoto(function_name, 226) ->
+ 56;
+yeccgoto(function_name, 232) ->
+ 56;
+yeccgoto(function_name, 235) ->
+ 56;
+yeccgoto(function_name, 257) ->
+ 56;
+yeccgoto(function_name, 260) ->
+ 56;
+yeccgoto(function_name, 265) ->
+ 56;
+yeccgoto(function_name, 311) ->
+ 309;
+yeccgoto(function_name, 316) ->
+ 14;
+yeccgoto(let_expr, 33) ->
+ 59;
+yeccgoto(let_expr, 35) ->
+ 59;
+yeccgoto(let_expr, 36) ->
+ 59;
+yeccgoto(let_expr, 37) ->
+ 59;
+yeccgoto(let_expr, 40) ->
+ 59;
+yeccgoto(let_expr, 44) ->
+ 59;
+yeccgoto(let_expr, 46) ->
+ 59;
+yeccgoto(let_expr, 48) ->
+ 59;
+yeccgoto(let_expr, 52) ->
+ 59;
+yeccgoto(let_expr, 70) ->
+ 59;
+yeccgoto(let_expr, 74) ->
+ 59;
+yeccgoto(let_expr, 79) ->
+ 59;
+yeccgoto(let_expr, 86) ->
+ 59;
+yeccgoto(let_expr, 90) ->
+ 59;
+yeccgoto(let_expr, 99) ->
+ 59;
+yeccgoto(let_expr, 164) ->
+ 59;
+yeccgoto(let_expr, 166) ->
+ 59;
+yeccgoto(let_expr, 171) ->
+ 59;
+yeccgoto(let_expr, 203) ->
+ 59;
+yeccgoto(let_expr, 211) ->
+ 59;
+yeccgoto(let_expr, 214) ->
+ 59;
+yeccgoto(let_expr, 216) ->
+ 59;
+yeccgoto(let_expr, 218) ->
+ 59;
+yeccgoto(let_expr, 226) ->
+ 59;
+yeccgoto(let_expr, 232) ->
+ 59;
+yeccgoto(let_expr, 235) ->
+ 59;
+yeccgoto(let_expr, 257) ->
+ 59;
+yeccgoto(let_expr, 260) ->
+ 59;
+yeccgoto(let_expr, 265) ->
+ 59;
+yeccgoto(let_vars, 58) ->
+ 213;
+yeccgoto(let_vars, 82) ->
+ 85;
+yeccgoto(let_vars, 88) ->
+ 89;
+yeccgoto(letrec_expr, 33) ->
+ 61;
+yeccgoto(letrec_expr, 35) ->
+ 61;
+yeccgoto(letrec_expr, 36) ->
+ 61;
+yeccgoto(letrec_expr, 37) ->
+ 61;
+yeccgoto(letrec_expr, 40) ->
+ 61;
+yeccgoto(letrec_expr, 44) ->
+ 61;
+yeccgoto(letrec_expr, 46) ->
+ 61;
+yeccgoto(letrec_expr, 48) ->
+ 61;
+yeccgoto(letrec_expr, 52) ->
+ 61;
+yeccgoto(letrec_expr, 70) ->
+ 61;
+yeccgoto(letrec_expr, 74) ->
+ 61;
+yeccgoto(letrec_expr, 79) ->
+ 61;
+yeccgoto(letrec_expr, 86) ->
+ 61;
+yeccgoto(letrec_expr, 90) ->
+ 61;
+yeccgoto(letrec_expr, 99) ->
+ 61;
+yeccgoto(letrec_expr, 164) ->
+ 61;
+yeccgoto(letrec_expr, 166) ->
+ 61;
+yeccgoto(letrec_expr, 171) ->
+ 61;
+yeccgoto(letrec_expr, 203) ->
+ 61;
+yeccgoto(letrec_expr, 211) ->
+ 61;
+yeccgoto(letrec_expr, 214) ->
+ 61;
+yeccgoto(letrec_expr, 216) ->
+ 61;
+yeccgoto(letrec_expr, 218) ->
+ 61;
+yeccgoto(letrec_expr, 226) ->
+ 61;
+yeccgoto(letrec_expr, 232) ->
+ 61;
+yeccgoto(letrec_expr, 235) ->
+ 61;
+yeccgoto(letrec_expr, 257) ->
+ 61;
+yeccgoto(letrec_expr, 260) ->
+ 61;
+yeccgoto(letrec_expr, 265) ->
+ 61;
+yeccgoto(literal, 284) ->
+ 288;
+yeccgoto(literal, 285) ->
+ 297;
+yeccgoto(literal, 290) ->
+ 291;
+yeccgoto(literal, 295) ->
+ 291;
+yeccgoto(literal, 298) ->
+ 304;
+yeccgoto(literal, 301) ->
+ 302;
+yeccgoto(literals, 290) ->
+ 292;
+yeccgoto(literals, 295) ->
+ 296;
+yeccgoto(module_attribute, 6) ->
+ 8;
+yeccgoto(module_attribute, 315) ->
+ 316;
+yeccgoto(module_definition, 0) ->
+ 3;
+yeccgoto(module_defs, 8) ->
+ 15;
+yeccgoto(module_defs, 316) ->
+ 317;
+yeccgoto(module_export, 4) ->
+ 6;
+yeccgoto(module_export, 314) ->
+ 315;
+yeccgoto(nil, 33) ->
+ 62;
+yeccgoto(nil, 35) ->
+ 62;
+yeccgoto(nil, 36) ->
+ 62;
+yeccgoto(nil, 37) ->
+ 62;
+yeccgoto(nil, 40) ->
+ 62;
+yeccgoto(nil, 44) ->
+ 62;
+yeccgoto(nil, 46) ->
+ 62;
+yeccgoto(nil, 48) ->
+ 62;
+yeccgoto(nil, 52) ->
+ 62;
+yeccgoto(nil, 65) ->
+ 62;
+yeccgoto(nil, 70) ->
+ 62;
+yeccgoto(nil, 74) ->
+ 62;
+yeccgoto(nil, 79) ->
+ 62;
+yeccgoto(nil, 86) ->
+ 62;
+yeccgoto(nil, 90) ->
+ 62;
+yeccgoto(nil, 96) ->
+ 62;
+yeccgoto(nil, 97) ->
+ 62;
+yeccgoto(nil, 98) ->
+ 62;
+yeccgoto(nil, 99) ->
+ 62;
+yeccgoto(nil, 100) ->
+ 62;
+yeccgoto(nil, 114) ->
+ 62;
+yeccgoto(nil, 115) ->
+ 62;
+yeccgoto(nil, 120) ->
+ 62;
+yeccgoto(nil, 126) ->
+ 139;
+yeccgoto(nil, 129) ->
+ 139;
+yeccgoto(nil, 142) ->
+ 139;
+yeccgoto(nil, 147) ->
+ 139;
+yeccgoto(nil, 151) ->
+ 139;
+yeccgoto(nil, 154) ->
+ 139;
+yeccgoto(nil, 162) ->
+ 62;
+yeccgoto(nil, 164) ->
+ 62;
+yeccgoto(nil, 166) ->
+ 62;
+yeccgoto(nil, 171) ->
+ 62;
+yeccgoto(nil, 174) ->
+ 62;
+yeccgoto(nil, 177) ->
+ 62;
+yeccgoto(nil, 200) ->
+ 62;
+yeccgoto(nil, 203) ->
+ 62;
+yeccgoto(nil, 211) ->
+ 62;
+yeccgoto(nil, 214) ->
+ 62;
+yeccgoto(nil, 216) ->
+ 62;
+yeccgoto(nil, 218) ->
+ 62;
+yeccgoto(nil, 222) ->
+ 62;
+yeccgoto(nil, 226) ->
+ 62;
+yeccgoto(nil, 232) ->
+ 62;
+yeccgoto(nil, 235) ->
+ 62;
+yeccgoto(nil, 257) ->
+ 62;
+yeccgoto(nil, 260) ->
+ 62;
+yeccgoto(nil, 265) ->
+ 62;
+yeccgoto(nil, 284) ->
+ 62;
+yeccgoto(nil, 285) ->
+ 62;
+yeccgoto(nil, 290) ->
+ 62;
+yeccgoto(nil, 295) ->
+ 62;
+yeccgoto(nil, 298) ->
+ 62;
+yeccgoto(nil, 301) ->
+ 62;
+yeccgoto(other_pattern, 65) ->
+ 111;
+yeccgoto(other_pattern, 96) ->
+ 186;
+yeccgoto(other_pattern, 97) ->
+ 111;
+yeccgoto(other_pattern, 98) ->
+ 111;
+yeccgoto(other_pattern, 100) ->
+ 111;
+yeccgoto(other_pattern, 114) ->
+ 111;
+yeccgoto(other_pattern, 115) ->
+ 123;
+yeccgoto(other_pattern, 120) ->
+ 111;
+yeccgoto(other_pattern, 162) ->
+ 111;
+yeccgoto(other_pattern, 174) ->
+ 111;
+yeccgoto(other_pattern, 177) ->
+ 111;
+yeccgoto(other_pattern, 200) ->
+ 111;
+yeccgoto(other_pattern, 222) ->
+ 111;
+yeccgoto(primop_expr, 33) ->
+ 64;
+yeccgoto(primop_expr, 35) ->
+ 64;
+yeccgoto(primop_expr, 36) ->
+ 64;
+yeccgoto(primop_expr, 37) ->
+ 64;
+yeccgoto(primop_expr, 40) ->
+ 64;
+yeccgoto(primop_expr, 44) ->
+ 64;
+yeccgoto(primop_expr, 46) ->
+ 64;
+yeccgoto(primop_expr, 48) ->
+ 64;
+yeccgoto(primop_expr, 52) ->
+ 64;
+yeccgoto(primop_expr, 70) ->
+ 64;
+yeccgoto(primop_expr, 74) ->
+ 64;
+yeccgoto(primop_expr, 79) ->
+ 64;
+yeccgoto(primop_expr, 86) ->
+ 64;
+yeccgoto(primop_expr, 90) ->
+ 64;
+yeccgoto(primop_expr, 99) ->
+ 64;
+yeccgoto(primop_expr, 164) ->
+ 64;
+yeccgoto(primop_expr, 166) ->
+ 64;
+yeccgoto(primop_expr, 171) ->
+ 64;
+yeccgoto(primop_expr, 203) ->
+ 64;
+yeccgoto(primop_expr, 211) ->
+ 64;
+yeccgoto(primop_expr, 214) ->
+ 64;
+yeccgoto(primop_expr, 216) ->
+ 64;
+yeccgoto(primop_expr, 218) ->
+ 64;
+yeccgoto(primop_expr, 226) ->
+ 64;
+yeccgoto(primop_expr, 232) ->
+ 64;
+yeccgoto(primop_expr, 235) ->
+ 64;
+yeccgoto(primop_expr, 257) ->
+ 64;
+yeccgoto(primop_expr, 260) ->
+ 64;
+yeccgoto(primop_expr, 265) ->
+ 64;
+yeccgoto(receive_expr, 33) ->
+ 66;
+yeccgoto(receive_expr, 35) ->
+ 66;
+yeccgoto(receive_expr, 36) ->
+ 66;
+yeccgoto(receive_expr, 37) ->
+ 66;
+yeccgoto(receive_expr, 40) ->
+ 66;
+yeccgoto(receive_expr, 44) ->
+ 66;
+yeccgoto(receive_expr, 46) ->
+ 66;
+yeccgoto(receive_expr, 48) ->
+ 66;
+yeccgoto(receive_expr, 52) ->
+ 66;
+yeccgoto(receive_expr, 70) ->
+ 66;
+yeccgoto(receive_expr, 74) ->
+ 66;
+yeccgoto(receive_expr, 79) ->
+ 66;
+yeccgoto(receive_expr, 86) ->
+ 66;
+yeccgoto(receive_expr, 90) ->
+ 66;
+yeccgoto(receive_expr, 99) ->
+ 66;
+yeccgoto(receive_expr, 164) ->
+ 66;
+yeccgoto(receive_expr, 166) ->
+ 66;
+yeccgoto(receive_expr, 171) ->
+ 66;
+yeccgoto(receive_expr, 203) ->
+ 66;
+yeccgoto(receive_expr, 211) ->
+ 66;
+yeccgoto(receive_expr, 214) ->
+ 66;
+yeccgoto(receive_expr, 216) ->
+ 66;
+yeccgoto(receive_expr, 218) ->
+ 66;
+yeccgoto(receive_expr, 226) ->
+ 66;
+yeccgoto(receive_expr, 232) ->
+ 66;
+yeccgoto(receive_expr, 235) ->
+ 66;
+yeccgoto(receive_expr, 257) ->
+ 66;
+yeccgoto(receive_expr, 260) ->
+ 66;
+yeccgoto(receive_expr, 265) ->
+ 66;
+yeccgoto(segment, 247) ->
+ 249;
+yeccgoto(segment, 255) ->
+ 249;
+yeccgoto(segment_pattern, 190) ->
+ 192;
+yeccgoto(segment_pattern, 198) ->
+ 192;
+yeccgoto(segment_patterns, 190) ->
+ 193;
+yeccgoto(segment_patterns, 198) ->
+ 199;
+yeccgoto(segments, 247) ->
+ 250;
+yeccgoto(segments, 255) ->
+ 256;
+yeccgoto(sequence, 33) ->
+ 67;
+yeccgoto(sequence, 35) ->
+ 67;
+yeccgoto(sequence, 36) ->
+ 67;
+yeccgoto(sequence, 37) ->
+ 67;
+yeccgoto(sequence, 40) ->
+ 67;
+yeccgoto(sequence, 44) ->
+ 67;
+yeccgoto(sequence, 46) ->
+ 67;
+yeccgoto(sequence, 48) ->
+ 67;
+yeccgoto(sequence, 52) ->
+ 67;
+yeccgoto(sequence, 70) ->
+ 67;
+yeccgoto(sequence, 74) ->
+ 67;
+yeccgoto(sequence, 79) ->
+ 67;
+yeccgoto(sequence, 86) ->
+ 67;
+yeccgoto(sequence, 90) ->
+ 67;
+yeccgoto(sequence, 99) ->
+ 67;
+yeccgoto(sequence, 164) ->
+ 67;
+yeccgoto(sequence, 166) ->
+ 67;
+yeccgoto(sequence, 171) ->
+ 67;
+yeccgoto(sequence, 203) ->
+ 67;
+yeccgoto(sequence, 211) ->
+ 67;
+yeccgoto(sequence, 214) ->
+ 67;
+yeccgoto(sequence, 216) ->
+ 67;
+yeccgoto(sequence, 218) ->
+ 67;
+yeccgoto(sequence, 226) ->
+ 67;
+yeccgoto(sequence, 232) ->
+ 67;
+yeccgoto(sequence, 235) ->
+ 67;
+yeccgoto(sequence, 257) ->
+ 67;
+yeccgoto(sequence, 260) ->
+ 67;
+yeccgoto(sequence, 265) ->
+ 67;
+yeccgoto(single_expression, 33) ->
+ 68;
+yeccgoto(single_expression, 35) ->
+ 68;
+yeccgoto(single_expression, 36) ->
+ 68;
+yeccgoto(single_expression, 37) ->
+ 68;
+yeccgoto(single_expression, 40) ->
+ 68;
+yeccgoto(single_expression, 44) ->
+ 68;
+yeccgoto(single_expression, 46) ->
+ 68;
+yeccgoto(single_expression, 48) ->
+ 68;
+yeccgoto(single_expression, 52) ->
+ 68;
+yeccgoto(single_expression, 70) ->
+ 68;
+yeccgoto(single_expression, 74) ->
+ 68;
+yeccgoto(single_expression, 79) ->
+ 68;
+yeccgoto(single_expression, 86) ->
+ 68;
+yeccgoto(single_expression, 90) ->
+ 68;
+yeccgoto(single_expression, 99) ->
+ 68;
+yeccgoto(single_expression, 164) ->
+ 68;
+yeccgoto(single_expression, 166) ->
+ 68;
+yeccgoto(single_expression, 171) ->
+ 68;
+yeccgoto(single_expression, 203) ->
+ 68;
+yeccgoto(single_expression, 211) ->
+ 68;
+yeccgoto(single_expression, 214) ->
+ 68;
+yeccgoto(single_expression, 216) ->
+ 68;
+yeccgoto(single_expression, 218) ->
+ 68;
+yeccgoto(single_expression, 226) ->
+ 68;
+yeccgoto(single_expression, 232) ->
+ 68;
+yeccgoto(single_expression, 235) ->
+ 68;
+yeccgoto(single_expression, 257) ->
+ 68;
+yeccgoto(single_expression, 260) ->
+ 68;
+yeccgoto(single_expression, 265) ->
+ 68;
+yeccgoto(tail, 231) ->
+ 234;
+yeccgoto(tail, 238) ->
+ 239;
+yeccgoto(tail_constant, 150) ->
+ 153;
+yeccgoto(tail_constant, 157) ->
+ 158;
+yeccgoto(tail_literal, 297) ->
+ 300;
+yeccgoto(tail_literal, 304) ->
+ 305;
+yeccgoto(tail_pattern, 173) ->
+ 176;
+yeccgoto(tail_pattern, 180) ->
+ 181;
+yeccgoto(timeout, 65) ->
+ 112;
+yeccgoto(timeout, 101) ->
+ 168;
+yeccgoto(try_expr, 33) ->
+ 71;
+yeccgoto(try_expr, 35) ->
+ 71;
+yeccgoto(try_expr, 36) ->
+ 71;
+yeccgoto(try_expr, 37) ->
+ 71;
+yeccgoto(try_expr, 40) ->
+ 71;
+yeccgoto(try_expr, 44) ->
+ 71;
+yeccgoto(try_expr, 46) ->
+ 71;
+yeccgoto(try_expr, 48) ->
+ 71;
+yeccgoto(try_expr, 52) ->
+ 71;
+yeccgoto(try_expr, 70) ->
+ 71;
+yeccgoto(try_expr, 74) ->
+ 71;
+yeccgoto(try_expr, 79) ->
+ 71;
+yeccgoto(try_expr, 86) ->
+ 71;
+yeccgoto(try_expr, 90) ->
+ 71;
+yeccgoto(try_expr, 99) ->
+ 71;
+yeccgoto(try_expr, 164) ->
+ 71;
+yeccgoto(try_expr, 166) ->
+ 71;
+yeccgoto(try_expr, 171) ->
+ 71;
+yeccgoto(try_expr, 203) ->
+ 71;
+yeccgoto(try_expr, 211) ->
+ 71;
+yeccgoto(try_expr, 214) ->
+ 71;
+yeccgoto(try_expr, 216) ->
+ 71;
+yeccgoto(try_expr, 218) ->
+ 71;
+yeccgoto(try_expr, 226) ->
+ 71;
+yeccgoto(try_expr, 232) ->
+ 71;
+yeccgoto(try_expr, 235) ->
+ 71;
+yeccgoto(try_expr, 257) ->
+ 71;
+yeccgoto(try_expr, 260) ->
+ 71;
+yeccgoto(try_expr, 265) ->
+ 71;
+yeccgoto(tuple, 33) ->
+ 72;
+yeccgoto(tuple, 35) ->
+ 72;
+yeccgoto(tuple, 36) ->
+ 72;
+yeccgoto(tuple, 37) ->
+ 72;
+yeccgoto(tuple, 40) ->
+ 72;
+yeccgoto(tuple, 44) ->
+ 72;
+yeccgoto(tuple, 46) ->
+ 72;
+yeccgoto(tuple, 48) ->
+ 72;
+yeccgoto(tuple, 52) ->
+ 72;
+yeccgoto(tuple, 70) ->
+ 72;
+yeccgoto(tuple, 74) ->
+ 72;
+yeccgoto(tuple, 79) ->
+ 72;
+yeccgoto(tuple, 86) ->
+ 72;
+yeccgoto(tuple, 90) ->
+ 72;
+yeccgoto(tuple, 99) ->
+ 72;
+yeccgoto(tuple, 164) ->
+ 72;
+yeccgoto(tuple, 166) ->
+ 72;
+yeccgoto(tuple, 171) ->
+ 72;
+yeccgoto(tuple, 203) ->
+ 72;
+yeccgoto(tuple, 211) ->
+ 72;
+yeccgoto(tuple, 214) ->
+ 72;
+yeccgoto(tuple, 216) ->
+ 72;
+yeccgoto(tuple, 218) ->
+ 72;
+yeccgoto(tuple, 226) ->
+ 72;
+yeccgoto(tuple, 232) ->
+ 72;
+yeccgoto(tuple, 235) ->
+ 72;
+yeccgoto(tuple, 257) ->
+ 72;
+yeccgoto(tuple, 260) ->
+ 72;
+yeccgoto(tuple, 265) ->
+ 72;
+yeccgoto(tuple_constant, 126) ->
+ 141;
+yeccgoto(tuple_constant, 129) ->
+ 141;
+yeccgoto(tuple_constant, 142) ->
+ 141;
+yeccgoto(tuple_constant, 147) ->
+ 141;
+yeccgoto(tuple_constant, 151) ->
+ 141;
+yeccgoto(tuple_constant, 154) ->
+ 141;
+yeccgoto(tuple_literal, 284) ->
+ 289;
+yeccgoto(tuple_literal, 285) ->
+ 289;
+yeccgoto(tuple_literal, 290) ->
+ 289;
+yeccgoto(tuple_literal, 295) ->
+ 289;
+yeccgoto(tuple_literal, 298) ->
+ 289;
+yeccgoto(tuple_literal, 301) ->
+ 289;
+yeccgoto(tuple_pattern, 65) ->
+ 113;
+yeccgoto(tuple_pattern, 96) ->
+ 113;
+yeccgoto(tuple_pattern, 97) ->
+ 113;
+yeccgoto(tuple_pattern, 98) ->
+ 113;
+yeccgoto(tuple_pattern, 100) ->
+ 113;
+yeccgoto(tuple_pattern, 114) ->
+ 113;
+yeccgoto(tuple_pattern, 115) ->
+ 113;
+yeccgoto(tuple_pattern, 120) ->
+ 113;
+yeccgoto(tuple_pattern, 162) ->
+ 113;
+yeccgoto(tuple_pattern, 174) ->
+ 113;
+yeccgoto(tuple_pattern, 177) ->
+ 113;
+yeccgoto(tuple_pattern, 200) ->
+ 113;
+yeccgoto(tuple_pattern, 222) ->
+ 113;
+yeccgoto(variable, 25) ->
+ 31;
+yeccgoto(variable, 26) ->
+ 267;
+yeccgoto(variable, 33) ->
+ 73;
+yeccgoto(variable, 35) ->
+ 73;
+yeccgoto(variable, 36) ->
+ 73;
+yeccgoto(variable, 37) ->
+ 73;
+yeccgoto(variable, 40) ->
+ 73;
+yeccgoto(variable, 44) ->
+ 73;
+yeccgoto(variable, 46) ->
+ 73;
+yeccgoto(variable, 48) ->
+ 73;
+yeccgoto(variable, 52) ->
+ 73;
+yeccgoto(variable, 58) ->
+ 31;
+yeccgoto(variable, 65) ->
+ 31;
+yeccgoto(variable, 70) ->
+ 73;
+yeccgoto(variable, 74) ->
+ 73;
+yeccgoto(variable, 79) ->
+ 73;
+yeccgoto(variable, 82) ->
+ 31;
+yeccgoto(variable, 83) ->
+ 31;
+yeccgoto(variable, 86) ->
+ 73;
+yeccgoto(variable, 88) ->
+ 31;
+yeccgoto(variable, 90) ->
+ 73;
+yeccgoto(variable, 96) ->
+ 124;
+yeccgoto(variable, 97) ->
+ 31;
+yeccgoto(variable, 98) ->
+ 31;
+yeccgoto(variable, 99) ->
+ 73;
+yeccgoto(variable, 100) ->
+ 31;
+yeccgoto(variable, 114) ->
+ 31;
+yeccgoto(variable, 115) ->
+ 124;
+yeccgoto(variable, 120) ->
+ 31;
+yeccgoto(variable, 162) ->
+ 31;
+yeccgoto(variable, 164) ->
+ 73;
+yeccgoto(variable, 166) ->
+ 73;
+yeccgoto(variable, 171) ->
+ 73;
+yeccgoto(variable, 174) ->
+ 31;
+yeccgoto(variable, 177) ->
+ 31;
+yeccgoto(variable, 200) ->
+ 31;
+yeccgoto(variable, 203) ->
+ 73;
+yeccgoto(variable, 211) ->
+ 73;
+yeccgoto(variable, 214) ->
+ 73;
+yeccgoto(variable, 216) ->
+ 73;
+yeccgoto(variable, 218) ->
+ 73;
+yeccgoto(variable, 222) ->
+ 31;
+yeccgoto(variable, 226) ->
+ 73;
+yeccgoto(variable, 232) ->
+ 73;
+yeccgoto(variable, 235) ->
+ 73;
+yeccgoto(variable, 257) ->
+ 73;
+yeccgoto(variable, 260) ->
+ 73;
+yeccgoto(variable, 263) ->
+ 31;
+yeccgoto(variable, 265) ->
+ 73;
+yeccgoto(__Symbol, __State) ->
+ exit({__Symbol, __State, missing_in_goto_table}).
+
+
diff --git a/lib/dialyzer/test/options1_tests_SUITE_data/src/compiler/core_parse.hrl b/lib/dialyzer/test/options1_tests_SUITE_data/src/compiler/core_parse.hrl
new file mode 100644
index 0000000000..aaf913a15a
--- /dev/null
+++ b/lib/dialyzer/test/options1_tests_SUITE_data/src/compiler/core_parse.hrl
@@ -0,0 +1,111 @@
+%% ``The contents of this file are subject to the Erlang Public License,
+%% Version 1.1, (the "License"); you may not use this file except in
+%% compliance with the License. You should have received a copy of the
+%% Erlang Public License along with this software. If not, it can be
+%% retrieved via the world wide web at http://www.erlang.org/.
+%%
+%% Software distributed under the License is distributed on an "AS IS"
+%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
+%% the License for the specific language governing rights and limitations
+%% under the License.
+%%
+%% The Initial Developer of the Original Code is Ericsson Utvecklings AB.
+%% Portions created by Ericsson are Copyright 1999, Ericsson Utvecklings
+%% AB. All Rights Reserved.''
+%%
+%% $Id: core_parse.hrl,v 1.1 2008/12/17 09:53:42 mikpe Exp $
+%%
+%% Purpose : Core Erlang syntax trees as records.
+
+%% It would be nice to incorporate some generic functions as well but
+%% this could make including this file difficult.
+
+%% Note: the annotation list is *always* the first record field.
+%% Thus it is possible to define the macros:
+%% -define(get_ann(X), element(2, X)).
+%% -define(set_ann(X, Y), setelement(2, X, Y)).
+
+-record(c_int, {anno=[], val}). % val :: integer()
+
+-record(c_float, {anno=[], val}). % val :: float()
+
+-record(c_atom, {anno=[], val}). % val :: atom()
+
+-record(c_char, {anno=[], val}). % val :: char()
+
+-record(c_string, {anno=[], val}). % val :: string()
+
+-record(c_nil, {anno=[]}).
+
+-record(c_binary, {anno=[], segments}). % segments :: [#ce_bitstr{}]
+
+-record(c_bitstr, {anno=[],val, % val :: Tree,
+ size, % size :: Tree,
+ unit, % unit :: integer(),
+ type, % type :: atom(),
+ flags}). % flags :: [atom()],
+
+-record(c_cons, {anno=[], hd, % hd :: Tree,
+ tl}). % tl :: Tree
+
+-record(c_tuple, {anno=[], es}). % es :: [Tree]
+
+-record(c_var, {anno=[], name}). % name :: integer() | atom()
+
+-record(c_fname, {anno=[], id, % id :: atom(),
+ arity}). % arity :: integer()
+
+-record(c_values, {anno=[], es}). % es :: [Tree]
+
+-record(c_fun, {anno=[], vars, % vars :: [Tree],
+ body}). % body :: Tree
+
+-record(c_seq, {anno=[], arg, % arg :: Tree,
+ body}). % body :: Tree
+
+-record(c_let, {anno=[], vars, % vars :: [Tree],
+ arg, % arg :: Tree,
+ body}). % body :: Tree
+
+-record(c_letrec, {anno=[], defs, % defs :: [#ce_def{}],
+ body}). % body :: Tree
+
+-record(c_def, {anno=[], name, % name :: Tree,
+ val}). % val :: Tree,
+
+-record(c_case, {anno=[], arg, % arg :: Tree,
+ clauses}). % clauses :: [Tree]
+
+-record(c_clause, {anno=[], pats, % pats :: [Tree],
+ guard, % guard :: Tree,
+ body}). % body :: Tree
+
+-record(c_alias, {anno=[], var, % var :: Tree,
+ pat}). % pat :: Tree
+
+-record(c_receive, {anno=[], clauses, % clauses :: [Tree],
+ timeout, % timeout :: Tree,
+ action}). % action :: Tree
+
+-record(c_apply, {anno=[], op, % op :: Tree,
+ args}). % args :: [Tree]
+
+-record(c_call, {anno=[], module, % module :: Tree,
+ name, % name :: Tree,
+ args}). % args :: [Tree]
+
+-record(c_primop, {anno=[], name, % name :: Tree,
+ args}). % args :: [Tree]
+
+-record(c_try, {anno=[], arg, % arg :: Tree,
+ vars, % vars :: [Tree],
+ body, % body :: Tree
+ evars, % evars :: [Tree],
+ handler}). % handler :: Tree
+
+-record(c_catch, {anno=[], body}). % body :: Tree
+
+-record(c_module, {anno=[], name, % name :: Tree,
+ exports, % exports :: [Tree],
+ attrs, % attrs :: [#ce_def{}],
+ defs}). % defs :: [#ce_def{}]
diff --git a/lib/dialyzer/test/options1_tests_SUITE_data/src/compiler/core_pp.erl b/lib/dialyzer/test/options1_tests_SUITE_data/src/compiler/core_pp.erl
new file mode 100644
index 0000000000..147a0dba6c
--- /dev/null
+++ b/lib/dialyzer/test/options1_tests_SUITE_data/src/compiler/core_pp.erl
@@ -0,0 +1,430 @@
+%% ``The contents of this file are subject to the Erlang Public License,
+%% Version 1.1, (the "License"); you may not use this file except in
+%% compliance with the License. You should have received a copy of the
+%% Erlang Public License along with this software. If not, it can be
+%% retrieved via the world wide web at http://www.erlang.org/.
+%%
+%% Software distributed under the License is distributed on an "AS IS"
+%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
+%% the License for the specific language governing rights and limitations
+%% under the License.
+%%
+%% The Initial Developer of the Original Code is Ericsson Utvecklings AB.
+%% Portions created by Ericsson are Copyright 1999, Ericsson Utvecklings
+%% AB. All Rights Reserved.''
+%%
+%% $Id: core_pp.erl,v 1.1 2008/12/17 09:53:42 mikpe Exp $
+%%
+%% Purpose : Core Erlang (naive) prettyprinter
+
+-module(core_pp).
+
+-export([format/1]).
+
+-include("core_parse.hrl").
+
+%% ====================================================================== %%
+%% format(Node) -> Text
+%% Node = coreErlang()
+%% Text = string() | [Text]
+%%
+%% Prettyprint-formats (naively) an abstract Core Erlang syntax
+%% tree.
+
+-record(ctxt, {class = term,
+ indent = 0,
+ item_indent = 2,
+ body_indent = 4,
+ tab_width = 8,
+ line = 0}).
+
+format(Node) -> case catch format(Node, #ctxt{}) of
+ {'EXIT',_} -> io_lib:format("~p",[Node]);
+ Other -> Other
+ end.
+
+maybe_anno(Node, Fun, Ctxt) ->
+ As = core_lib:get_anno(Node),
+ case get_line(As) of
+ none ->
+ maybe_anno(Node, Fun, Ctxt, As);
+ Line ->
+ if Line > Ctxt#ctxt.line ->
+ [io_lib:format("%% Line ~w",[Line]),
+ nl_indent(Ctxt),
+ maybe_anno(Node, Fun, Ctxt#ctxt{line = Line}, As)
+ ];
+ true ->
+ maybe_anno(Node, Fun, Ctxt, As)
+ end
+ end.
+
+maybe_anno(Node, Fun, Ctxt, As) ->
+ case strip_line(As) of
+ [] ->
+ Fun(Node, Ctxt);
+ List ->
+ Ctxt1 = add_indent(Ctxt, 2),
+ Ctxt2 = add_indent(Ctxt1, 3),
+ ["( ",
+ Fun(Node, Ctxt1),
+ nl_indent(Ctxt1),
+ "-| ",format_1(core_lib:make_literal(List), Ctxt2)," )"
+ ]
+ end.
+
+strip_line([A | As]) when integer(A) ->
+ strip_line(As);
+strip_line([A | As]) ->
+ [A | strip_line(As)];
+strip_line([]) ->
+ [].
+
+get_line([L | _As]) when integer(L) ->
+ L;
+get_line([_ | As]) ->
+ get_line(As);
+get_line([]) ->
+ none.
+
+format(Node, Ctxt) ->
+ maybe_anno(Node, fun format_1/2, Ctxt).
+
+format_1(#c_char{val=C}, _) -> io_lib:write_char(C);
+format_1(#c_int{val=I}, _) -> integer_to_list(I);
+format_1(#c_float{val=F}, _) -> float_to_list(F);
+format_1(#c_atom{val=A}, _) -> core_atom(A);
+format_1(#c_nil{}, _) -> "[]";
+format_1(#c_string{val=S}, _) -> io_lib:write_string(S);
+format_1(#c_var{name=V}, _) ->
+ %% Internal variable names may be:
+ %% - atoms representing proper Erlang variable names, or
+ %% any atoms that may be printed without single-quoting
+ %% - nonnegative integers.
+ %% It is important that when printing variables, no two names
+ %% should ever map to the same string.
+ if atom(V) ->
+ S = atom_to_list(V),
+ case S of
+ [C | _] when C >= $A, C =< $Z ->
+ %% Ordinary uppercase-prefixed names are
+ %% printed just as they are.
+ S;
+ [$_ | _] ->
+ %% Already "_"-prefixed names are prefixed
+ %% with "_X", e.g. '_foo' => '_X_foo', to
+ %% avoid generating things like "____foo" upon
+ %% repeated writing and reading of code.
+ %% ("_X_X_X_foo" is better.)
+ [$_, $X | S];
+ _ ->
+ %% Plain atoms are prefixed with a single "_".
+ %% E.g. foo => "_foo".
+ [$_ | S]
+ end;
+ integer(V) ->
+ %% Integers are also simply prefixed with "_".
+ [$_ | integer_to_list(V)]
+ end;
+format_1(#c_binary{segments=Segs}, Ctxt) ->
+ ["#{",
+ format_vseq(Segs, "", ",", add_indent(Ctxt, 2),
+ fun format_bitstr/2),
+ "}#"
+ ];
+format_1(#c_tuple{es=Es}, Ctxt) ->
+ [${,
+ format_hseq(Es, ",", add_indent(Ctxt, 1), fun format/2),
+ $}
+ ];
+format_1(#c_cons{hd=H,tl=T}, Ctxt) ->
+ Txt = ["["|format(H, add_indent(Ctxt, 1))],
+ [Txt|format_list_tail(T, add_indent(Ctxt, width(Txt, Ctxt)))];
+format_1(#c_values{es=Es}, Ctxt) ->
+ format_values(Es, Ctxt);
+format_1(#c_alias{var=V,pat=P}, Ctxt) ->
+ Txt = [format(V, Ctxt)|" = "],
+ [Txt|format(P, add_indent(Ctxt, width(Txt, Ctxt)))];
+format_1(#c_let{vars=Vs,arg=A,body=B}, Ctxt) ->
+ Ctxt1 = add_indent(Ctxt, Ctxt#ctxt.body_indent),
+ ["let ",
+ format_values(Vs, add_indent(Ctxt, 4)),
+ " =",
+ nl_indent(Ctxt1),
+ format(A, Ctxt1),
+ nl_indent(Ctxt),
+ "in "
+ | format(B, add_indent(Ctxt, 4))
+ ];
+format_1(#c_letrec{defs=Fs,body=B}, Ctxt) ->
+ Ctxt1 = add_indent(Ctxt, Ctxt#ctxt.body_indent),
+ ["letrec",
+ nl_indent(Ctxt1),
+ format_funcs(Fs, Ctxt1),
+ nl_indent(Ctxt),
+ "in "
+ | format(B, add_indent(Ctxt, 4))
+ ];
+format_1(#c_seq{arg=A,body=B}, Ctxt) ->
+ Ctxt1 = add_indent(Ctxt, 4),
+ ["do ",
+ format(A, Ctxt1),
+ nl_indent(Ctxt1)
+ | format(B, Ctxt1)
+ ];
+format_1(#c_case{arg=A,clauses=Cs}, Ctxt) ->
+ Ctxt1 = add_indent(Ctxt, Ctxt#ctxt.item_indent),
+ ["case ",
+ format(A, add_indent(Ctxt, 5)),
+ " of",
+ nl_indent(Ctxt1),
+ format_clauses(Cs, Ctxt1),
+ nl_indent(Ctxt)
+ | "end"
+ ];
+format_1(#c_receive{clauses=Cs,timeout=T,action=A}, Ctxt) ->
+ Ctxt1 = add_indent(Ctxt, Ctxt#ctxt.item_indent),
+ ["receive",
+ nl_indent(Ctxt1),
+ format_clauses(Cs, Ctxt1),
+ nl_indent(Ctxt),
+ "after ",
+ format(T, add_indent(Ctxt, 6)),
+ " ->",
+ nl_indent(Ctxt1),
+ format(A, Ctxt1)
+ ];
+format_1(#c_fname{id=I,arity=A}, _) ->
+ [core_atom(I),$/,integer_to_list(A)];
+format_1(#c_fun{vars=Vs,body=B}, Ctxt) ->
+ Ctxt1 = add_indent(Ctxt, Ctxt#ctxt.body_indent),
+ ["fun (",
+ format_hseq(Vs, ",", add_indent(Ctxt, 5), fun format/2),
+ ") ->",
+ nl_indent(Ctxt1)
+ | format(B, Ctxt1)
+ ];
+format_1(#c_apply{op=O,args=As}, Ctxt0) ->
+ Ctxt1 = add_indent(Ctxt0, 6), %"apply "
+ Op = format(O, Ctxt1),
+ Ctxt2 = add_indent(Ctxt0, 4),
+ ["apply ",Op,
+ nl_indent(Ctxt2),
+ $(,format_hseq(As, ", ", add_indent(Ctxt2, 1), fun format/2),$)
+ ];
+format_1(#c_call{module=M,name=N,args=As}, Ctxt0) ->
+ Ctxt1 = add_indent(Ctxt0, 5), %"call "
+ Mod = format(M, Ctxt1),
+ Ctxt2 = add_indent(Ctxt1, width(Mod, Ctxt1)+1),
+ Name = format(N, Ctxt2),
+ Ctxt3 = add_indent(Ctxt0, 4),
+ ["call ",Mod,":",Name,
+ nl_indent(Ctxt3),
+ $(,format_hseq(As, ", ", add_indent(Ctxt3, 1), fun format/2),$)
+ ];
+format_1(#c_primop{name=N,args=As}, Ctxt0) ->
+ Ctxt1 = add_indent(Ctxt0, 7), %"primop "
+ Name = format(N, Ctxt1),
+ Ctxt2 = add_indent(Ctxt0, 4),
+ ["primop ",Name,
+ nl_indent(Ctxt2),
+ $(,format_hseq(As, ", ", add_indent(Ctxt2, 1), fun format/2),$)
+ ];
+format_1(#c_catch{body=B}, Ctxt) ->
+ Ctxt1 = add_indent(Ctxt, Ctxt#ctxt.body_indent),
+ ["catch",
+ nl_indent(Ctxt1),
+ format(B, Ctxt1)
+ ];
+format_1(#c_try{arg=E,vars=Vs,body=B,evars=Evs,handler=H}, Ctxt) ->
+ Ctxt1 = add_indent(Ctxt, Ctxt#ctxt.body_indent),
+ ["try",
+ nl_indent(Ctxt1),
+ format(E, Ctxt1),
+ nl_indent(Ctxt),
+ "of ",
+ format_values(Vs, add_indent(Ctxt, 3)),
+ " ->",
+ nl_indent(Ctxt1),
+ format(B, Ctxt1),
+ nl_indent(Ctxt),
+ "catch ",
+ format_values(Evs, add_indent(Ctxt, 6)),
+ " ->",
+ nl_indent(Ctxt1)
+ | format(H, Ctxt1)
+ ];
+format_1(#c_def{name=N,val=V}, Ctxt) ->
+ Ctxt1 = add_indent(set_class(Ctxt, expr), Ctxt#ctxt.body_indent),
+ [format(N, Ctxt),
+ " =",
+ nl_indent(Ctxt1)
+ | format(V, Ctxt1)
+ ];
+format_1(#c_module{name=N,exports=Es,attrs=As,defs=Ds}, Ctxt) ->
+ Mod = ["module ", format(N, Ctxt)],
+ [Mod," [",
+ format_vseq(Es,
+ "", ",",
+ add_indent(set_class(Ctxt, term), width(Mod, Ctxt)+2),
+ fun format/2),
+ "]",
+ nl_indent(Ctxt),
+ " attributes [",
+ format_vseq(As,
+ "", ",",
+ add_indent(set_class(Ctxt, def), 16),
+ fun format/2),
+ "]",
+ nl_indent(Ctxt),
+ format_funcs(Ds, Ctxt),
+ nl_indent(Ctxt)
+ | "end"
+ ];
+format_1(Type, _) ->
+ ["** Unsupported type: ",
+ io_lib:write(Type)
+ | " **"
+ ].
+
+format_funcs(Fs, Ctxt) ->
+ format_vseq(Fs,
+ "", "",
+ set_class(Ctxt, def),
+ fun format/2).
+
+format_values(Vs, Ctxt) ->
+ [$<,
+ format_hseq(Vs, ",", add_indent(Ctxt, 1), fun format/2),
+ $>].
+
+format_bitstr(#c_bitstr{val=V,size=S,unit=U,type=T,flags=Fs}, Ctxt0) ->
+ Vs = [S, U, T, Fs],
+ Ctxt1 = add_indent(Ctxt0, 2),
+ Val = format(V, Ctxt1),
+ Ctxt2 = add_indent(Ctxt1, width(Val, Ctxt1) + 2),
+ ["#<", Val, ">(", format_hseq(Vs,",", Ctxt2, fun format/2), $)].
+
+format_clauses(Cs, Ctxt) ->
+ format_vseq(Cs, "", "", set_class(Ctxt, clause),
+ fun format_clause/2).
+
+format_clause(Node, Ctxt) ->
+ maybe_anno(Node, fun format_clause_1/2, Ctxt).
+
+format_clause_1(#c_clause{pats=Ps,guard=G,body=B}, Ctxt) ->
+ Ptxt = format_values(Ps, Ctxt),
+ Ctxt2 = add_indent(Ctxt, Ctxt#ctxt.body_indent),
+ [Ptxt,
+ " when ",
+ format_guard(G, add_indent(set_class(Ctxt, expr),
+ width(Ptxt, Ctxt) + 6)),
+ " ->",
+ nl_indent(Ctxt2)
+ | format(B, set_class(Ctxt2, expr))
+ ].
+
+format_guard(Node, Ctxt) ->
+ maybe_anno(Node, fun format_guard_1/2, Ctxt).
+
+format_guard_1(#c_call{module=M,name=N,args=As}, Ctxt0) ->
+ Ctxt1 = add_indent(Ctxt0, 5), %"call "
+ Mod = format(M, Ctxt1),
+ Ctxt2 = add_indent(Ctxt1, width(Mod, Ctxt1)+1),
+ Name = format(N, Ctxt2),
+ Ctxt3 = add_indent(Ctxt0, 4),
+ ["call ",Mod,":",Name,
+ nl_indent(Ctxt3),
+ $(,format_vseq(As, "",",", add_indent(Ctxt3, 1), fun format_guard/2),$)
+ ];
+format_guard_1(E, Ctxt) -> format_1(E, Ctxt). %Anno already done
+
+%% format_hseq([Thing], Separator, Context, Fun) -> Txt.
+%% Format a sequence horizontally on the same line with Separator between.
+
+format_hseq([H], _, Ctxt, Fun) ->
+ Fun(H, Ctxt);
+format_hseq([H|T], Sep, Ctxt, Fun) ->
+ Txt = [Fun(H, Ctxt)|Sep],
+ Ctxt1 = add_indent(Ctxt, width(Txt, Ctxt)),
+ [Txt|format_hseq(T, Sep, Ctxt1, Fun)];
+format_hseq([], _, _, _) -> "".
+
+%% format_vseq([Thing], LinePrefix, LineSuffix, Context, Fun) -> Txt.
+%% Format a sequence vertically in indented lines adding LinePrefix
+%% to the beginning of each line and LineSuffix to the end of each
+%% line. No prefix on the first line or suffix on the last line.
+
+format_vseq([H], _Pre, _Suf, Ctxt, Fun) ->
+ Fun(H, Ctxt);
+format_vseq([H|T], Pre, Suf, Ctxt, Fun) ->
+ [Fun(H, Ctxt),Suf,nl_indent(Ctxt),Pre|
+ format_vseq(T, Pre, Suf, Ctxt, Fun)];
+format_vseq([], _, _, _, _) -> "".
+
+format_list_tail(#c_nil{anno=[]}, _) -> "]";
+format_list_tail(#c_cons{anno=[],hd=H,tl=T}, Ctxt) ->
+ Txt = [$,|format(H, Ctxt)],
+ Ctxt1 = add_indent(Ctxt, width(Txt, Ctxt)),
+ [Txt|format_list_tail(T, Ctxt1)];
+format_list_tail(Tail, Ctxt) ->
+ ["|",format(Tail, add_indent(Ctxt, 1)),"]"].
+
+indent(Ctxt) -> indent(Ctxt#ctxt.indent, Ctxt).
+
+indent(N, _) when N =< 0 -> "";
+indent(N, Ctxt) ->
+ T = Ctxt#ctxt.tab_width,
+ string:chars($\t, N div T, string:chars($\s, N rem T)).
+
+nl_indent(Ctxt) -> [$\n|indent(Ctxt)].
+
+
+unindent(T, Ctxt) ->
+ unindent(T, Ctxt#ctxt.indent, Ctxt, []).
+
+unindent(T, N, _, C) when N =< 0 ->
+ [T|C];
+unindent([$\s|T], N, Ctxt, C) ->
+ unindent(T, N - 1, Ctxt, C);
+unindent([$\t|T], N, Ctxt, C) ->
+ Tab = Ctxt#ctxt.tab_width,
+ if N >= Tab ->
+ unindent(T, N - Tab, Ctxt, C);
+ true ->
+ unindent([string:chars($\s, Tab - N)|T], 0, Ctxt, C)
+ end;
+unindent([L|T], N, Ctxt, C) when list(L) ->
+ unindent(L, N, Ctxt, [T|C]);
+unindent([H|T], _, _, C) ->
+ [H|[T|C]];
+unindent([], N, Ctxt, [H|T]) ->
+ unindent(H, N, Ctxt, T);
+unindent([], _, _, []) -> [].
+
+
+width(Txt, Ctxt) ->
+ case catch width(Txt, 0, Ctxt, []) of
+ {'EXIT',_} -> exit({bad_text,Txt});
+ Other -> Other
+ end.
+
+width([$\t|T], A, Ctxt, C) ->
+ width(T, A + Ctxt#ctxt.tab_width, Ctxt, C);
+width([$\n|T], _, Ctxt, C) ->
+ width(unindent([T|C], Ctxt), Ctxt);
+width([H|T], A, Ctxt, C) when list(H) ->
+ width(H, A, Ctxt, [T|C]);
+width([_|T], A, Ctxt, C) ->
+ width(T, A + 1, Ctxt, C);
+width([], A, Ctxt, [H|T]) ->
+ width(H, A, Ctxt, T);
+width([], A, _, []) -> A.
+
+add_indent(Ctxt, Dx) ->
+ Ctxt#ctxt{indent = Ctxt#ctxt.indent + Dx}.
+
+set_class(Ctxt, Class) ->
+ Ctxt#ctxt{class = Class}.
+
+core_atom(A) -> io_lib:write_string(atom_to_list(A), $').
diff --git a/lib/dialyzer/test/options1_tests_SUITE_data/src/compiler/core_scan.erl b/lib/dialyzer/test/options1_tests_SUITE_data/src/compiler/core_scan.erl
new file mode 100644
index 0000000000..f53c3c1631
--- /dev/null
+++ b/lib/dialyzer/test/options1_tests_SUITE_data/src/compiler/core_scan.erl
@@ -0,0 +1,495 @@
+%% ``The contents of this file are subject to the Erlang Public License,
+%% Version 1.1, (the "License"); you may not use this file except in
+%% compliance with the License. You should have received a copy of the
+%% Erlang Public License along with this software. If not, it can be
+%% retrieved via the world wide web at http://www.erlang.org/.
+%%
+%% Software distributed under the License is distributed on an "AS IS"
+%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
+%% the License for the specific language governing rights and limitations
+%% under the License.
+%%
+%% The Initial Developer of the Original Code is Ericsson Utvecklings AB.
+%% Portions created by Ericsson are Copyright 1999, Ericsson Utvecklings
+%% AB. All Rights Reserved.''
+%%
+%% $Id: core_scan.erl,v 1.1 2008/12/17 09:53:42 mikpe Exp $
+%%
+%% Purpose: Scanner for Core Erlang.
+
+%% For handling ISO 8859-1 (Latin-1) we use the following type
+%% information:
+%%
+%% 000 - 037 NUL - US control
+%% 040 - 057 SPC - / punctuation
+%% 060 - 071 0 - 9 digit
+%% 072 - 100 : - @ punctuation
+%% 101 - 132 A - Z uppercase
+%% 133 - 140 [ - ` punctuation
+%% 141 - 172 a - z lowercase
+%% 173 - 176 { - ~ punctuation
+%% 177 DEL control
+%% 200 - 237 control
+%% 240 - 277 NBSP - � punctuation
+%% 300 - 326 � - � uppercase
+%% 327 � punctuation
+%% 330 - 336 � - � uppercase
+%% 337 - 366 � - � lowercase
+%% 367 � punctuation
+%% 370 - 377 � - � lowercase
+%%
+%% Many punctuation characters region have special meaning. Must
+%% watch using � \327, bvery close to x \170
+
+-module(core_scan).
+
+-export([string/1,string/2,tokens/3,format_error/1]).
+
+-import(lists, [reverse/1]).
+
+%% tokens(Continuation, CharList, StartPos) ->
+%% {done, {ok, [Tok], EndPos}, Rest} |
+%% {done, {error,{ErrorPos,core_scan,What}, EndPos}, Rest} |
+%% {more, Continuation'}
+%% This is the main function into the re-entrant scanner. It calls the
+%% re-entrant pre-scanner until this says done, then calls scan/1 on
+%% the result.
+%%
+%% The continuation has the form:
+%% {RestChars,CharsSoFar,CurrentPos,StartPos}
+
+tokens([], Chars, Pos) -> %First call
+ tokens({[],[],Pos,Pos}, Chars, Pos);
+tokens({Chars,SoFar0,Cp,Sp}, MoreChars, _) ->
+ In = Chars ++ MoreChars,
+ case pre_scan(In, SoFar0, Cp) of
+ {done,_,[],Ep} -> %Found nothing
+ {done,{eof,Ep},[]};
+ {done,_,SoFar1,Ep} -> %Got complete tokens
+ Res = case scan(reverse(SoFar1), Sp) of
+ {ok,Toks} -> {ok,Toks,Ep};
+ {error,E} -> {error,E,Ep}
+ end,
+ {done,Res,[]};
+ {more,Rest,SoFar1,Cp1} -> %Missing end token
+ {more,{Rest,SoFar1,Cp1,Sp}};
+ Other -> %An error has occurred
+ {done,Other,[]}
+ end.
+
+%% string([Char]) ->
+%% string([Char], StartPos) ->
+%% {ok, [Tok], EndPos} |
+%% {error,{Pos,core_scan,What}, EndPos}
+
+string(Cs) -> string(Cs, 1).
+
+string(Cs, Sp) ->
+ %% Add an 'eof' to always get correct handling.
+ case string_pre_scan(Cs, [], Sp) of
+ {done,_,SoFar,Ep} -> %Got tokens
+ case scan(reverse(SoFar), Sp) of
+ {ok,Toks} -> {ok,Toks,Ep};
+ {error,E} -> {error,E,Ep}
+ end;
+ Other -> Other %An error has occurred
+ end.
+
+%% string_pre_scan(Cs, SoFar0, StartPos) ->
+%% {done,Rest,SoFar,EndPos} | {error,E,EndPos}.
+
+string_pre_scan(Cs, SoFar0, Sp) ->
+ case pre_scan(Cs, SoFar0, Sp) of
+ {done,Rest,SoFar1,Ep} -> %Got complete tokens
+ {done,Rest,SoFar1,Ep};
+ {more,Rest,SoFar1,Ep} -> %Missing end token
+ string_pre_scan(Rest ++ eof, SoFar1, Ep);
+ Other -> Other %An error has occurred
+ end.
+
+%% format_error(Error)
+%% Return a string describing the error.
+
+format_error({string,Quote,Head}) ->
+ ["unterminated " ++ string_thing(Quote) ++
+ " starting with " ++ io_lib:write_string(Head,Quote)];
+format_error({illegal,Type}) -> io_lib:fwrite("illegal ~w", [Type]);
+format_error(char) -> "unterminated character";
+format_error(scan) -> "premature end";
+format_error({base,Base}) -> io_lib:fwrite("illegal base '~w'", [Base]);
+format_error(float) -> "bad float";
+format_error(Other) -> io_lib:write(Other).
+
+string_thing($') -> "atom";
+string_thing($") -> "string".
+
+%% Re-entrant pre-scanner.
+%%
+%% If the input list of characters is insufficient to build a term the
+%% scanner returns a request for more characters and a continuation to be
+%% used when trying to build a term with more characters. To indicate
+%% end-of-file the input character list should be replaced with 'eof'
+%% as an empty list has meaning.
+%%
+%% When more characters are need inside a comment, string or quoted
+%% atom, which can become rather long, instead of pushing the
+%% characters read so far back onto RestChars to be reread, a special
+%% reentry token is returned indicating the middle of a construct.
+%% The token is the start character as an atom, '%', '"' and '\''.
+
+%% pre_scan([Char], SoFar, StartPos) ->
+%% {done,RestChars,ScannedChars,NewPos} |
+%% {more,RestChars,ScannedChars,NewPos} |
+%% {error,{ErrorPos,core_scan,Description},NewPos}.
+%% Main pre-scan function. It has been split into 2 functions because of
+%% efficiency, with a good indexing compiler it would be unnecessary.
+
+pre_scan([C|Cs], SoFar, Pos) ->
+ pre_scan(C, Cs, SoFar, Pos);
+pre_scan([], SoFar, Pos) ->
+ {more,[],SoFar,Pos};
+pre_scan(eof, SoFar, Pos) ->
+ {done,eof,SoFar,Pos}.
+
+%% pre_scan(Char, [Char], SoFar, Pos)
+
+pre_scan($$, Cs0, SoFar0, Pos) ->
+ case pre_char(Cs0, [$$|SoFar0]) of
+ {Cs,SoFar} ->
+ pre_scan(Cs, SoFar, Pos);
+ more ->
+ {more,[$$|Cs0],SoFar0, Pos};
+ error ->
+ pre_error(char, Pos, Pos)
+ end;
+pre_scan($', Cs, SoFar, Pos) ->
+ pre_string(Cs, $', '\'', Pos, [$'|SoFar], Pos);
+pre_scan({'\'',Sp}, Cs, SoFar, Pos) -> %Re-entering quoted atom
+ pre_string(Cs, $', '\'', Sp, SoFar, Pos);
+pre_scan($", Cs, SoFar, Pos) ->
+ pre_string(Cs, $", '"', Pos, [$"|SoFar], Pos);
+pre_scan({'"',Sp}, Cs, SoFar, Pos) -> %Re-entering string
+ pre_string(Cs, $", '"', Sp, SoFar, Pos);
+pre_scan($%, Cs, SoFar, Pos) ->
+ pre_comment(Cs, SoFar, Pos);
+pre_scan('%', Cs, SoFar, Pos) -> %Re-entering comment
+ pre_comment(Cs, SoFar, Pos);
+pre_scan($\n, Cs, SoFar, Pos) ->
+ pre_scan(Cs, [$\n|SoFar], Pos+1);
+pre_scan(C, Cs, SoFar, Pos) ->
+ pre_scan(Cs, [C|SoFar], Pos).
+
+%% pre_string([Char], Quote, Reent, StartPos, SoFar, Pos)
+
+pre_string([Q|Cs], Q, _, _, SoFar, Pos) ->
+ pre_scan(Cs, [Q|SoFar], Pos);
+pre_string([$\n|Cs], Q, Reent, Sp, SoFar, Pos) ->
+ pre_string(Cs, Q, Reent, Sp, [$\n|SoFar], Pos+1);
+pre_string([$\\|Cs0], Q, Reent, Sp, SoFar0, Pos) ->
+ case pre_escape(Cs0, SoFar0) of
+ {Cs,SoFar} ->
+ pre_string(Cs, Q, Reent, Sp, SoFar, Pos);
+ more ->
+ {more,[{Reent,Sp},$\\|Cs0],SoFar0,Pos};
+ error ->
+ pre_string_error(Q, Sp, SoFar0, Pos)
+ end;
+pre_string([C|Cs], Q, Reent, Sp, SoFar, Pos) ->
+ pre_string(Cs, Q, Reent, Sp, [C|SoFar], Pos);
+pre_string([], _, Reent, Sp, SoFar, Pos) ->
+ {more,[{Reent,Sp}],SoFar,Pos};
+pre_string(eof, Q, _, Sp, SoFar, Pos) ->
+ pre_string_error(Q, Sp, SoFar, Pos).
+
+pre_string_error(Q, Sp, SoFar, Pos) ->
+ S = reverse(string:substr(SoFar, 1, string:chr(SoFar, Q)-1)),
+ pre_error({string,Q,string:substr(S, 1, 16)}, Sp, Pos).
+
+pre_char([C|Cs], SoFar) -> pre_char(C, Cs, SoFar);
+pre_char([], _) -> more;
+pre_char(eof, _) -> error.
+
+pre_char($\\, Cs, SoFar) ->
+ pre_escape(Cs, SoFar);
+pre_char(C, Cs, SoFar) ->
+ {Cs,[C|SoFar]}.
+
+pre_escape([$^|Cs0], SoFar) ->
+ case Cs0 of
+ [C3|Cs] ->
+ {Cs,[C3,$^,$\\|SoFar]};
+ [] -> more;
+ eof -> error
+ end;
+pre_escape([C|Cs], SoFar) ->
+ {Cs,[C,$\\|SoFar]};
+pre_escape([], _) -> more;
+pre_escape(eof, _) -> error.
+
+%% pre_comment([Char], SoFar, Pos)
+%% Comments are replaced by one SPACE.
+
+pre_comment([$\n|Cs], SoFar, Pos) ->
+ pre_scan(Cs, [$\n,$\s|SoFar], Pos+1); %Terminate comment
+pre_comment([_|Cs], SoFar, Pos) ->
+ pre_comment(Cs, SoFar, Pos);
+pre_comment([], SoFar, Pos) ->
+ {more,['%'],SoFar,Pos};
+pre_comment(eof, Sofar, Pos) ->
+ pre_scan(eof, [$\s|Sofar], Pos).
+
+pre_error(E, Epos, Pos) ->
+ {error,{Epos,core_scan,E}, Pos}.
+
+%% scan(CharList, StartPos)
+%% This takes a list of characters and tries to tokenise them.
+%%
+%% The token list is built in reverse order (in a stack) to save appending
+%% and then reversed when all the tokens have been collected. Most tokens
+%% are built in the same way.
+%%
+%% Returns:
+%% {ok,[Tok]}
+%% {error,{ErrorPos,core_scan,What}}
+
+scan(Cs, Pos) ->
+ scan1(Cs, [], Pos).
+
+%% scan1(Characters, TokenStack, Position)
+%% Scan a list of characters into tokens.
+
+scan1([$\n|Cs], Toks, Pos) -> %Skip newline
+ scan1(Cs, Toks, Pos+1);
+scan1([C|Cs], Toks, Pos) when C >= $\000, C =< $\s -> %Skip control chars
+ scan1(Cs, Toks, Pos);
+scan1([C|Cs], Toks, Pos) when C >= $\200, C =< $\240 ->
+ scan1(Cs, Toks, Pos);
+scan1([C|Cs], Toks, Pos) when C >= $a, C =< $z -> %Keywords
+ scan_key_word(C, Cs, Toks, Pos);
+scan1([C|Cs], Toks, Pos) when C >= $�, C =< $�, C /= $� ->
+ scan_key_word(C, Cs, Toks, Pos);
+scan1([C|Cs], Toks, Pos) when C >= $A, C =< $Z -> %Variables
+ scan_variable(C, Cs, Toks, Pos);
+scan1([C|Cs], Toks, Pos) when C >= $�, C =< $�, C /= $� ->
+ scan_variable(C, Cs, Toks, Pos);
+scan1([C|Cs], Toks, Pos) when C >= $0, C =< $9 -> %Numbers
+ scan_number(C, Cs, Toks, Pos);
+scan1([$-,C|Cs], Toks, Pos) when C >= $0, C =< $9 -> %Signed numbers
+ scan_signed_number($-, C, Cs, Toks, Pos);
+scan1([$+,C|Cs], Toks, Pos) when C >= $0, C =< $9 -> %Signed numbers
+ scan_signed_number($+, C, Cs, Toks, Pos);
+scan1([$_|Cs], Toks, Pos) -> %_ variables
+ scan_variable($_, Cs, Toks, Pos);
+scan1([$$|Cs0], Toks, Pos) -> %Character constant
+ {C,Cs,Pos1} = scan_char(Cs0, Pos),
+ scan1(Cs, [{char,Pos,C}|Toks], Pos1);
+scan1([$'|Cs0], Toks, Pos) -> %Atom (always quoted)
+ {S,Cs1,Pos1} = scan_string(Cs0, $', Pos),
+ case catch list_to_atom(S) of
+ A when atom(A) ->
+ scan1(Cs1, [{atom,Pos,A}|Toks], Pos1);
+ _Error -> scan_error({illegal,atom}, Pos)
+ end;
+scan1([$"|Cs0], Toks, Pos) -> %String
+ {S,Cs1,Pos1} = scan_string(Cs0, $", Pos),
+ scan1(Cs1, [{string,Pos,S}|Toks], Pos1);
+%% Punctuation characters and operators, first recognise multiples.
+scan1("->" ++ Cs, Toks, Pos) ->
+ scan1(Cs, [{'->',Pos}|Toks], Pos);
+scan1("-|" ++ Cs, Toks, Pos) ->
+ scan1(Cs, [{'-|',Pos}|Toks], Pos);
+scan1([C|Cs], Toks, Pos) -> %Punctuation character
+ P = list_to_atom([C]),
+ scan1(Cs, [{P,Pos}|Toks], Pos);
+scan1([], Toks0, _) ->
+ Toks = reverse(Toks0),
+ {ok,Toks}.
+
+%% scan_key_word(FirstChar, CharList, Tokens, Pos)
+%% scan_variable(FirstChar, CharList, Tokens, Pos)
+
+scan_key_word(C, Cs0, Toks, Pos) ->
+ {Wcs,Cs} = scan_name(Cs0, []),
+ case catch list_to_atom([C|reverse(Wcs)]) of
+ Name when atom(Name) ->
+ scan1(Cs, [{Name,Pos}|Toks], Pos);
+ _Error -> scan_error({illegal,atom}, Pos)
+ end.
+
+scan_variable(C, Cs0, Toks, Pos) ->
+ {Wcs,Cs} = scan_name(Cs0, []),
+ case catch list_to_atom([C|reverse(Wcs)]) of
+ Name when atom(Name) ->
+ scan1(Cs, [{var,Pos,Name}|Toks], Pos);
+ _Error -> scan_error({illegal,var}, Pos)
+ end.
+
+%% scan_name(Cs) -> lists:splitwith(fun (C) -> name_char(C) end, Cs).
+
+scan_name([C|Cs], Ncs) ->
+ case name_char(C) of
+ true -> scan_name(Cs, [C|Ncs]);
+ false -> {Ncs,[C|Cs]} %Must rebuild here, sigh!
+ end;
+scan_name([], Ncs) ->
+ {Ncs,[]}.
+
+name_char(C) when C >= $a, C =< $z -> true;
+name_char(C) when C >= $�, C =< $�, C /= $� -> true;
+name_char(C) when C >= $A, C =< $Z -> true;
+name_char(C) when C >= $�, C =< $�, C /= $� -> true;
+name_char(C) when C >= $0, C =< $9 -> true;
+name_char($_) -> true;
+name_char($@) -> true;
+name_char(_) -> false.
+
+%% scan_string(CharList, QuoteChar, Pos) -> {StringChars,RestChars,NewPos}.
+
+scan_string(Cs, Q, Pos) ->
+ scan_string(Cs, [], Q, Pos).
+
+scan_string([Q|Cs], Scs, Q, Pos) ->
+ {reverse(Scs),Cs,Pos};
+scan_string([$\n|Cs], Scs, Q, Pos) ->
+ scan_string(Cs, [$\n|Scs], Q, Pos+1);
+scan_string([$\\|Cs0], Scs, Q, Pos) ->
+ {C,Cs,Pos1} = scan_escape(Cs0, Pos),
+ scan_string(Cs, [C|Scs], Q, Pos1);
+scan_string([C|Cs], Scs, Q, Pos) ->
+ scan_string(Cs, [C|Scs], Q, Pos).
+
+%% scan_char(Chars, Pos) -> {Char,RestChars,NewPos}.
+%% Read a single character from a character constant. The pre-scan
+%% phase has checked for errors here.
+
+scan_char([$\\|Cs], Pos) ->
+ scan_escape(Cs, Pos);
+scan_char([$\n|Cs], Pos) -> %Newline
+ {$\n,Cs,Pos+1};
+scan_char([C|Cs], Pos) ->
+ {C,Cs,Pos}.
+
+scan_escape([O1,O2,O3|Cs], Pos) when %\<1-3> octal digits
+ O1 >= $0, O1 =< $7, O2 >= $0, O2 =< $7, O3 >= $0, O3 =< $7 ->
+ Val = (O1*8 + O2)*8 + O3 - 73*$0,
+ {Val,Cs,Pos};
+scan_escape([O1,O2|Cs], Pos) when
+ O1 >= $0, O1 =< $7, O2 >= $0, O2 =< $7 ->
+ Val = (O1*8 + O2) - 9*$0,
+ {Val,Cs,Pos};
+scan_escape([O1|Cs], Pos) when
+ O1 >= $0, O1 =< $7 ->
+ {O1 - $0,Cs,Pos};
+scan_escape([$^,C|Cs], Pos) -> %\^X -> CTL-X
+ Val = C band 31,
+ {Val,Cs,Pos};
+%scan_escape([$\n,C1|Cs],Pos) ->
+% {C1,Cs,Pos+1};
+%scan_escape([C,C1|Cs],Pos) when C >= $\000, C =< $\s ->
+% {C1,Cs,Pos};
+scan_escape([$\n|Cs],Pos) ->
+ {$\n,Cs,Pos+1};
+scan_escape([C0|Cs],Pos) ->
+ C = escape_char(C0),
+ {C,Cs,Pos}.
+
+escape_char($n) -> $\n; %\n = LF
+escape_char($r) -> $\r; %\r = CR
+escape_char($t) -> $\t; %\t = TAB
+escape_char($v) -> $\v; %\v = VT
+escape_char($b) -> $\b; %\b = BS
+escape_char($f) -> $\f; %\f = FF
+escape_char($e) -> $\e; %\e = ESC
+escape_char($s) -> $\s; %\s = SPC
+escape_char($d) -> $\d; %\d = DEL
+escape_char(C) -> C.
+
+%% scan_number(Char, CharList, TokenStack, Pos)
+%% We can handle simple radix notation:
+%% <digit>#<digits> - the digits read in that base
+%% <digits> - the digits in base 10
+%% <digits>.<digits>
+%% <digits>.<digits>E+-<digits>
+%%
+%% Except for explicitly based integers we build a list of all the
+%% characters and then use list_to_integer/1 or list_to_float/1 to
+%% generate the value.
+
+%% SPos == Start position
+%% CPos == Current position
+
+scan_number(C, Cs0, Toks, Pos) ->
+ {Ncs,Cs,Pos1} = scan_integer(Cs0, [C], Pos),
+ scan_after_int(Cs, Ncs, Toks, Pos, Pos1).
+
+scan_signed_number(S, C, Cs0, Toks, Pos) ->
+ {Ncs,Cs,Pos1} = scan_integer(Cs0, [C,S], Pos),
+ scan_after_int(Cs, Ncs, Toks, Pos, Pos1).
+
+scan_integer([C|Cs], Stack, Pos) when C >= $0, C =< $9 ->
+ scan_integer(Cs, [C|Stack], Pos);
+scan_integer(Cs, Stack, Pos) ->
+ {Stack,Cs,Pos}.
+
+scan_after_int([$.,C|Cs0], Ncs0, Toks, SPos, CPos) when C >= $0, C =< $9 ->
+ {Ncs,Cs,CPos1} = scan_integer(Cs0, [C,$.|Ncs0], CPos),
+ scan_after_fraction(Cs, Ncs, Toks, SPos, CPos1);
+scan_after_int([$#|Cs], Ncs, Toks, SPos, CPos) ->
+ case list_to_integer(reverse(Ncs)) of
+ Base when Base >= 2, Base =< 16 ->
+ scan_based_int(Cs, 0, Base, Toks, SPos, CPos);
+ Base ->
+ scan_error({base,Base}, CPos)
+ end;
+scan_after_int(Cs, Ncs, Toks, SPos, CPos) ->
+ N = list_to_integer(reverse(Ncs)),
+ scan1(Cs, [{integer,SPos,N}|Toks], CPos).
+
+scan_based_int([C|Cs], SoFar, Base, Toks, SPos, CPos) when
+ C >= $0, C =< $9, C < Base + $0 ->
+ Next = SoFar * Base + (C - $0),
+ scan_based_int(Cs, Next, Base, Toks, SPos, CPos);
+scan_based_int([C|Cs], SoFar, Base, Toks, SPos, CPos) when
+ C >= $a, C =< $f, C < Base + $a - 10 ->
+ Next = SoFar * Base + (C - $a + 10),
+ scan_based_int(Cs, Next, Base, Toks, SPos, CPos);
+scan_based_int([C|Cs], SoFar, Base, Toks, SPos, CPos) when
+ C >= $A, C =< $F, C < Base + $A - 10 ->
+ Next = SoFar * Base + (C - $A + 10),
+ scan_based_int(Cs, Next, Base, Toks, SPos, CPos);
+scan_based_int(Cs, SoFar, _, Toks, SPos, CPos) ->
+ scan1(Cs, [{integer,SPos,SoFar}|Toks], CPos).
+
+scan_after_fraction([$E|Cs], Ncs, Toks, SPos, CPos) ->
+ scan_exponent(Cs, [$E|Ncs], Toks, SPos, CPos);
+scan_after_fraction([$e|Cs], Ncs, Toks, SPos, CPos) ->
+ scan_exponent(Cs, [$E|Ncs], Toks, SPos, CPos);
+scan_after_fraction(Cs, Ncs, Toks, SPos, CPos) ->
+ case catch list_to_float(reverse(Ncs)) of
+ N when float(N) ->
+ scan1(Cs, [{float,SPos,N}|Toks], CPos);
+ _Error -> scan_error({illegal,float}, SPos)
+ end.
+
+%% scan_exponent(CharList, NumberCharStack, TokenStack, StartPos, CurPos)
+%% Generate an error here if E{+|-} not followed by any digits.
+
+scan_exponent([$+|Cs], Ncs, Toks, SPos, CPos) ->
+ scan_exponent1(Cs, [$+|Ncs], Toks, SPos, CPos);
+scan_exponent([$-|Cs], Ncs, Toks, SPos, CPos) ->
+ scan_exponent1(Cs, [$-|Ncs], Toks, SPos, CPos);
+scan_exponent(Cs, Ncs, Toks, SPos, CPos) ->
+ scan_exponent1(Cs, Ncs, Toks, SPos, CPos).
+
+scan_exponent1([C|Cs0], Ncs0, Toks, SPos, CPos) when C >= $0, C =< $9 ->
+ {Ncs,Cs,CPos1} = scan_integer(Cs0, [C|Ncs0], CPos),
+ case catch list_to_float(reverse(Ncs)) of
+ N when float(N) ->
+ scan1(Cs, [{float,SPos,N}|Toks], CPos1);
+ _Error -> scan_error({illegal,float}, SPos)
+ end;
+scan_exponent1(_, _, _, _, CPos) ->
+ scan_error(float, CPos).
+
+scan_error(In, Pos) ->
+ {error,{Pos,core_scan,In}}.
diff --git a/lib/dialyzer/test/options1_tests_SUITE_data/src/compiler/erl_bifs.erl b/lib/dialyzer/test/options1_tests_SUITE_data/src/compiler/erl_bifs.erl
new file mode 100644
index 0000000000..088f44f9fd
--- /dev/null
+++ b/lib/dialyzer/test/options1_tests_SUITE_data/src/compiler/erl_bifs.erl
@@ -0,0 +1,486 @@
+%% ``The contents of this file are subject to the Erlang Public License,
+%% Version 1.1, (the "License"); you may not use this file except in
+%% compliance with the License. You should have received a copy of the
+%% Erlang Public License along with this software. If not, it can be
+%% retrieved via the world wide web at http://www.erlang.org/.
+%%
+%% Software distributed under the License is distributed on an "AS IS"
+%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
+%% the License for the specific language governing rights and limitations
+%% under the License.
+%%
+%% The Initial Developer of the Original Code is Ericsson Utvecklings AB.
+%% Portions created by Ericsson are Copyright 1999, Ericsson Utvecklings
+%% AB. All Rights Reserved.''
+%%
+%% $Id: erl_bifs.erl,v 1.2 2009/09/17 09:46:19 kostis Exp $
+%%
+%% Purpose: Information about the Erlang built-in functions.
+
+-module(erl_bifs).
+
+-export([is_bif/3, is_guard_bif/3, is_pure/3, is_safe/3]).
+
+
+%% =====================================================================
+%% is_bif(Module, Name, Arity) -> boolean()
+%%
+%% Module = Name = atom()
+%% Arity = integer()
+%%
+%% Returns `true' if the function `Module:Name/Arity' is a Built-In
+%% Function (BIF) of Erlang. BIFs "come with the implementation",
+%% and can be assumed to exist and have the same behaviour in any
+%% later versions of the same implementation of the language. Being
+%% a BIF does *not* imply that the function belongs to the module
+%% `erlang', nor that it is implemented in C or assembler (cf.
+%% `erlang:is_builtin/3'), or that it is auto-imported by the
+%% compiler (cf. `erl_internal:bif/3').
+
+is_bif(erlang, '!', 2) -> true;
+is_bif(erlang, '*', 2) -> true;
+is_bif(erlang, '+', 1) -> true;
+is_bif(erlang, '+', 2) -> true;
+is_bif(erlang, '++', 2) -> true;
+is_bif(erlang, '-', 1) -> true;
+is_bif(erlang, '-', 2) -> true;
+is_bif(erlang, '--', 2) -> true;
+is_bif(erlang, '/', 2) -> true;
+is_bif(erlang, '/=', 2) -> true;
+is_bif(erlang, '<', 2) -> true;
+is_bif(erlang, '=/=', 2) -> true;
+is_bif(erlang, '=:=', 2) -> true;
+is_bif(erlang, '=<', 2) -> true;
+is_bif(erlang, '==', 2) -> true;
+is_bif(erlang, '>', 2) -> true;
+is_bif(erlang, '>=', 2) -> true;
+is_bif(erlang, 'and', 2) -> true;
+is_bif(erlang, 'band', 2) -> true;
+is_bif(erlang, 'bnot', 1) -> true;
+is_bif(erlang, 'bor', 2) -> true;
+is_bif(erlang, 'bsl', 2) -> true;
+is_bif(erlang, 'bsr', 2) -> true;
+is_bif(erlang, 'bxor', 2) -> true;
+is_bif(erlang, 'div', 2) -> true;
+is_bif(erlang, 'not', 1) -> true;
+is_bif(erlang, 'or', 2) -> true;
+is_bif(erlang, 'rem', 2) -> true;
+is_bif(erlang, 'xor', 2) -> true;
+is_bif(erlang, abs, 1) -> true;
+is_bif(erlang, append_element, 2) -> true;
+is_bif(erlang, apply, 2) -> true;
+is_bif(erlang, apply, 3) -> true;
+is_bif(erlang, atom_to_list, 1) -> true;
+is_bif(erlang, binary_to_list, 1) -> true;
+is_bif(erlang, binary_to_list, 3) -> true;
+is_bif(erlang, binary_to_term, 1) -> true;
+is_bif(erlang, cancel_timer, 1) -> true;
+is_bif(erlang, concat_binary, 1) -> true;
+is_bif(erlang, date, 0) -> true;
+is_bif(erlang, demonitor, 1) -> true;
+is_bif(erlang, disconnect_node, 1) -> true;
+is_bif(erlang, display, 1) -> true;
+is_bif(erlang, element, 2) -> true;
+is_bif(erlang, erase, 0) -> true;
+is_bif(erlang, erase, 1) -> true;
+is_bif(erlang, error, 1) -> true;
+is_bif(erlang, error, 2) -> true;
+is_bif(erlang, exit, 1) -> true;
+is_bif(erlang, exit, 2) -> true;
+is_bif(erlang, fault, 1) -> true;
+is_bif(erlang, fault, 2) -> true;
+is_bif(erlang, float, 1) -> true;
+is_bif(erlang, float_to_list, 1) -> true;
+is_bif(erlang, fun_info, 1) -> true;
+is_bif(erlang, fun_info, 2) -> true;
+is_bif(erlang, fun_to_list, 1) -> true;
+is_bif(erlang, get, 0) -> true;
+is_bif(erlang, get, 1) -> true;
+is_bif(erlang, get_cookie, 0) -> true;
+is_bif(erlang, get_keys, 1) -> true;
+is_bif(erlang, group_leader, 0) -> true;
+is_bif(erlang, group_leader, 2) -> true;
+is_bif(erlang, halt, 0) -> false;
+is_bif(erlang, halt, 1) -> false;
+is_bif(erlang, hash, 2) -> false;
+is_bif(erlang, hd, 1) -> true;
+is_bif(erlang, info, 1) -> true;
+is_bif(erlang, integer_to_list, 1) -> true;
+is_bif(erlang, is_alive, 0) -> true;
+is_bif(erlang, is_atom, 1) -> true;
+is_bif(erlang, is_binary, 1) -> true;
+is_bif(erlang, is_boolean, 1) -> true;
+is_bif(erlang, is_builtin, 3) -> true;
+is_bif(erlang, is_constant, 1) -> true;
+is_bif(erlang, is_float, 1) -> true;
+is_bif(erlang, is_function, 1) -> true;
+is_bif(erlang, is_integer, 1) -> true;
+is_bif(erlang, is_list, 1) -> true;
+is_bif(erlang, is_number, 1) -> true;
+is_bif(erlang, is_pid, 1) -> true;
+is_bif(erlang, is_port, 1) -> true;
+is_bif(erlang, is_process_alive, 1) -> true;
+is_bif(erlang, is_record, 3) -> true;
+is_bif(erlang, is_reference, 1) -> true;
+is_bif(erlang, is_tuple, 1) -> true;
+is_bif(erlang, length, 1) -> true;
+is_bif(erlang, link, 1) -> true;
+is_bif(erlang, list_to_atom, 1) -> true;
+is_bif(erlang, list_to_binary, 1) -> true;
+is_bif(erlang, list_to_float, 1) -> true;
+is_bif(erlang, list_to_integer, 1) -> true;
+is_bif(erlang, list_to_pid, 1) -> true;
+is_bif(erlang, list_to_tuple, 1) -> true;
+is_bif(erlang, loaded, 0) -> true;
+is_bif(erlang, localtime, 0) -> true;
+is_bif(erlang, localtime_to_universaltime, 1) -> true;
+is_bif(erlang, make_ref, 0) -> true;
+is_bif(erlang, make_tuple, 2) -> true;
+is_bif(erlang, md5, 1) -> true;
+is_bif(erlang, md5_final, 1) -> true;
+is_bif(erlang, md5_init, 0) -> true;
+is_bif(erlang, md5_update, 2) -> true;
+is_bif(erlang, monitor, 2) -> true;
+is_bif(erlang, monitor_node, 2) -> true;
+is_bif(erlang, node, 0) -> true;
+is_bif(erlang, node, 1) -> true;
+is_bif(erlang, nodes, 0) -> true;
+is_bif(erlang, now, 0) -> true;
+is_bif(erlang, open_port, 2) -> true;
+is_bif(erlang, phash, 2) -> true;
+is_bif(erlang, pid_to_list, 1) -> true;
+is_bif(erlang, port_close, 2) -> true;
+is_bif(erlang, port_command, 2) -> true;
+is_bif(erlang, port_connect, 2) -> true;
+is_bif(erlang, port_control, 3) -> true;
+is_bif(erlang, port_info, 2) -> true;
+is_bif(erlang, port_to_list, 1) -> true;
+is_bif(erlang, ports, 0) -> true;
+is_bif(erlang, pre_loaded, 0) -> true;
+is_bif(erlang, process_display, 2) -> true;
+is_bif(erlang, process_flag, 2) -> true;
+is_bif(erlang, process_flag, 3) -> true;
+is_bif(erlang, process_info, 1) -> true;
+is_bif(erlang, process_info, 2) -> true;
+is_bif(erlang, processes, 0) -> true;
+is_bif(erlang, put, 2) -> true;
+is_bif(erlang, read_timer, 1) -> true;
+is_bif(erlang, ref_to_list, 1) -> true;
+is_bif(erlang, register, 2) -> true;
+is_bif(erlang, registered, 0) -> true;
+is_bif(erlang, resume_process, 1) -> true;
+is_bif(erlang, round, 1) -> true;
+is_bif(erlang, self, 0) -> true;
+is_bif(erlang, send_after, 3) -> true;
+is_bif(erlang, set_cookie, 2) -> true;
+is_bif(erlang, setelement, 3) -> true;
+is_bif(erlang, size, 1) -> true;
+is_bif(erlang, spawn, 1) -> true;
+is_bif(erlang, spawn, 2) -> true;
+is_bif(erlang, spawn, 3) -> true;
+is_bif(erlang, spawn, 4) -> true;
+is_bif(erlang, spawn_link, 1) -> true;
+is_bif(erlang, spawn_link, 2) -> true;
+is_bif(erlang, spawn_link, 3) -> true;
+is_bif(erlang, spawn_link, 4) -> true;
+is_bif(erlang, spawn_opt, 4) -> true;
+is_bif(erlang, split_binary, 2) -> true;
+is_bif(erlang, start_timer, 3) -> true;
+is_bif(erlang, statistics, 1) -> true;
+is_bif(erlang, suspend_process, 1) -> true;
+is_bif(erlang, system_flag, 2) -> true;
+is_bif(erlang, system_info, 1) -> true;
+is_bif(erlang, term_to_binary, 1) -> true;
+is_bif(erlang, term_to_binary, 2) -> true;
+is_bif(erlang, throw, 1) -> true;
+is_bif(erlang, time, 0) -> true;
+is_bif(erlang, tl, 1) -> true;
+is_bif(erlang, trace, 3) -> true;
+is_bif(erlang, trace_info, 2) -> true;
+is_bif(erlang, trace_pattern, 2) -> true;
+is_bif(erlang, trace_pattern, 3) -> true;
+is_bif(erlang, trunc, 1) -> true;
+is_bif(erlang, tuple_to_list, 1) -> true;
+is_bif(erlang, universaltime, 0) -> true;
+is_bif(erlang, universaltime_to_localtime, 1) -> true;
+is_bif(erlang, unlink, 1) -> true;
+is_bif(erlang, unregister, 1) -> true;
+is_bif(erlang, whereis, 1) -> true;
+is_bif(erlang, yield, 0) -> true;
+is_bif(lists, append, 2) -> true;
+is_bif(lists, reverse, 1) -> true;
+is_bif(lists, reverse, 2) -> true;
+is_bif(lists, subtract, 2) -> true;
+is_bif(math, acos, 1) -> true;
+is_bif(math, acosh, 1) -> true;
+is_bif(math, asin, 1) -> true;
+is_bif(math, asinh, 1) -> true;
+is_bif(math, atan, 1) -> true;
+is_bif(math, atan2, 2) -> true;
+is_bif(math, atanh, 1) -> true;
+is_bif(math, cos, 1) -> true;
+is_bif(math, cosh, 1) -> true;
+is_bif(math, erf, 1) -> true;
+is_bif(math, erfc, 1) -> true;
+is_bif(math, exp, 1) -> true;
+is_bif(math, log, 1) -> true;
+is_bif(math, log10, 1) -> true;
+is_bif(math, pow, 2) -> true;
+is_bif(math, sin, 1) -> true;
+is_bif(math, sinh, 1) -> true;
+is_bif(math, sqrt, 1) -> true;
+is_bif(math, tan, 1) -> true;
+is_bif(math, tanh, 1) -> true;
+is_bif(_, _, _) -> false.
+
+
+%% =====================================================================
+%% is_guard_bif(Module, Name, Arity) -> boolean()
+%%
+%% Module = Name = atom()
+%% Arity = integer()
+%%
+%% Returns `true' if the built-in function `Module:Name/Arity' may
+%% be called from a clause guard. Note that such "guard BIFs" are
+%% not necessarily "pure", since some (notably `erlang:self/0') may
+%% depend on the current state, nor "safe", since many guard BIFs
+%% can fail. Also note that even a "pure" function could be
+%% unsuitable for calling from a guard because of its time or space
+%% complexity.
+
+is_guard_bif(erlang, '*', 2) -> true;
+is_guard_bif(erlang, '+', 1) -> true;
+is_guard_bif(erlang, '+', 2) -> true;
+is_guard_bif(erlang, '-', 1) -> true;
+is_guard_bif(erlang, '-', 2) -> true;
+is_guard_bif(erlang, '/', 2) -> true;
+is_guard_bif(erlang, '/=', 2) -> true;
+is_guard_bif(erlang, '<', 2) -> true;
+is_guard_bif(erlang, '=/=', 2) -> true;
+is_guard_bif(erlang, '=:=', 2) -> true;
+is_guard_bif(erlang, '=<', 2) -> true;
+is_guard_bif(erlang, '==', 2) -> true;
+is_guard_bif(erlang, '>', 2) -> true;
+is_guard_bif(erlang, '>=', 2) -> true;
+is_guard_bif(erlang, 'and', 2) -> true;
+is_guard_bif(erlang, 'band', 2) -> true;
+is_guard_bif(erlang, 'bnot', 1) -> true;
+is_guard_bif(erlang, 'bor', 2) -> true;
+is_guard_bif(erlang, 'bsl', 2) -> true;
+is_guard_bif(erlang, 'bsr', 2) -> true;
+is_guard_bif(erlang, 'bxor', 2) -> true;
+is_guard_bif(erlang, 'div', 2) -> true;
+is_guard_bif(erlang, 'not', 1) -> true;
+is_guard_bif(erlang, 'or', 2) -> true;
+is_guard_bif(erlang, 'rem', 2) -> true;
+is_guard_bif(erlang, 'xor', 2) -> true;
+is_guard_bif(erlang, abs, 1) -> true;
+is_guard_bif(erlang, element, 2) -> true;
+is_guard_bif(erlang, error, 1) -> true; % unorthodox
+is_guard_bif(erlang, exit, 1) -> true; % unorthodox
+is_guard_bif(erlang, fault, 1) -> true; % unorthodox
+is_guard_bif(erlang, float, 1) -> true; % (the type coercion function)
+is_guard_bif(erlang, hd, 1) -> true;
+is_guard_bif(erlang, is_atom, 1) -> true;
+is_guard_bif(erlang, is_boolean, 1) -> true;
+is_guard_bif(erlang, is_binary, 1) -> true;
+is_guard_bif(erlang, is_constant, 1) -> true;
+is_guard_bif(erlang, is_float, 1) -> true;
+is_guard_bif(erlang, is_function, 1) -> true;
+is_guard_bif(erlang, is_integer, 1) -> true;
+is_guard_bif(erlang, is_list, 1) -> true;
+is_guard_bif(erlang, is_number, 1) -> true;
+is_guard_bif(erlang, is_pid, 1) -> true;
+is_guard_bif(erlang, is_port, 1) -> true;
+is_guard_bif(erlang, is_reference, 1) -> true;
+is_guard_bif(erlang, is_tuple, 1) -> true;
+is_guard_bif(erlang, length, 1) -> true;
+is_guard_bif(erlang, list_to_atom, 1) -> true; % unorthodox
+is_guard_bif(erlang, node, 0) -> true; % (not pure)
+is_guard_bif(erlang, node, 1) -> true; % (not pure)
+is_guard_bif(erlang, round, 1) -> true;
+is_guard_bif(erlang, self, 0) -> true; % (not pure)
+is_guard_bif(erlang, size, 1) -> true;
+is_guard_bif(erlang, throw, 1) -> true; % unorthodox
+is_guard_bif(erlang, tl, 1) -> true;
+is_guard_bif(erlang, trunc, 1) -> true;
+is_guard_bif(math, acos, 1) -> true; % unorthodox
+is_guard_bif(math, acosh, 1) -> true; % unorthodox
+is_guard_bif(math, asin, 1) -> true; % unorthodox
+is_guard_bif(math, asinh, 1) -> true; % unorthodox
+is_guard_bif(math, atan, 1) -> true; % unorthodox
+is_guard_bif(math, atan2, 2) -> true; % unorthodox
+is_guard_bif(math, atanh, 1) -> true; % unorthodox
+is_guard_bif(math, cos, 1) -> true; % unorthodox
+is_guard_bif(math, cosh, 1) -> true; % unorthodox
+is_guard_bif(math, erf, 1) -> true; % unorthodox
+is_guard_bif(math, erfc, 1) -> true; % unorthodox
+is_guard_bif(math, exp, 1) -> true; % unorthodox
+is_guard_bif(math, log, 1) -> true; % unorthodox
+is_guard_bif(math, log10, 1) -> true; % unorthodox
+is_guard_bif(math, pow, 2) -> true; % unorthodox
+is_guard_bif(math, sin, 1) -> true; % unorthodox
+is_guard_bif(math, sinh, 1) -> true; % unorthodox
+is_guard_bif(math, sqrt, 1) -> true; % unorthodox
+is_guard_bif(math, tan, 1) -> true; % unorthodox
+is_guard_bif(math, tanh, 1) -> true; % unorthodox
+is_guard_bif(_, _, _) -> false.
+
+
+%% =====================================================================
+%% is_pure(Module, Name, Arity) -> boolean()
+%%
+%% Module = Name = atom()
+%% Arity = integer()
+%%
+%% Returns `true' if the function `Module:Name/Arity' does not
+%% affect the state, nor depend on the state, although its
+%% evaluation is not guaranteed to complete normally for all input.
+
+is_pure(erlang, '*', 2) -> true;
+is_pure(erlang, '+', 1) -> true; % (even for non-numbers)
+is_pure(erlang, '+', 2) -> true;
+is_pure(erlang, '++', 2) -> true;
+is_pure(erlang, '-', 1) -> true;
+is_pure(erlang, '-', 2) -> true;
+is_pure(erlang, '--', 2) -> true;
+is_pure(erlang, '/', 2) -> true;
+is_pure(erlang, '/=', 2) -> true;
+is_pure(erlang, '<', 2) -> true;
+is_pure(erlang, '=/=', 2) -> true;
+is_pure(erlang, '=:=', 2) -> true;
+is_pure(erlang, '=<', 2) -> true;
+is_pure(erlang, '==', 2) -> true;
+is_pure(erlang, '>', 2) -> true;
+is_pure(erlang, '>=', 2) -> true;
+is_pure(erlang, 'and', 2) -> true;
+is_pure(erlang, 'band', 2) -> true;
+is_pure(erlang, 'bnot', 1) -> true;
+is_pure(erlang, 'bor', 2) -> true;
+is_pure(erlang, 'bsl', 2) -> true;
+is_pure(erlang, 'bsr', 2) -> true;
+is_pure(erlang, 'bxor', 2) -> true;
+is_pure(erlang, 'div', 2) -> true;
+is_pure(erlang, 'not', 1) -> true;
+is_pure(erlang, 'or', 2) -> true;
+is_pure(erlang, 'rem', 2) -> true;
+is_pure(erlang, 'xor', 2) -> true;
+is_pure(erlang, abs, 1) -> true;
+is_pure(erlang, atom_to_list, 1) -> true;
+is_pure(erlang, binary_to_list, 1) -> true;
+is_pure(erlang, binary_to_list, 3) -> true;
+is_pure(erlang, concat_binary, 1) -> true;
+is_pure(erlang, element, 2) -> true;
+is_pure(erlang, float, 1) -> true;
+is_pure(erlang, float_to_list, 1) -> true;
+is_pure(erlang, hash, 2) -> false;
+is_pure(erlang, hd, 1) -> true;
+is_pure(erlang, integer_to_list, 1) -> true;
+is_pure(erlang, is_atom, 1) -> true;
+is_pure(erlang, is_boolean, 1) -> true;
+is_pure(erlang, is_binary, 1) -> true;
+is_pure(erlang, is_builtin, 3) -> true;
+is_pure(erlang, is_constant, 1) -> true;
+is_pure(erlang, is_float, 1) -> true;
+is_pure(erlang, is_function, 1) -> true;
+is_pure(erlang, is_integer, 1) -> true;
+is_pure(erlang, is_list, 1) -> true;
+is_pure(erlang, is_number, 1) -> true;
+is_pure(erlang, is_pid, 1) -> true;
+is_pure(erlang, is_port, 1) -> true;
+is_pure(erlang, is_record, 3) -> true;
+is_pure(erlang, is_reference, 1) -> true;
+is_pure(erlang, is_tuple, 1) -> true;
+is_pure(erlang, length, 1) -> true;
+is_pure(erlang, list_to_atom, 1) -> true;
+is_pure(erlang, list_to_binary, 1) -> true;
+is_pure(erlang, list_to_float, 1) -> true;
+is_pure(erlang, list_to_integer, 1) -> true;
+is_pure(erlang, list_to_pid, 1) -> true;
+is_pure(erlang, list_to_tuple, 1) -> true;
+is_pure(erlang, phash, 2) -> false;
+is_pure(erlang, pid_to_list, 1) -> true;
+is_pure(erlang, round, 1) -> true;
+is_pure(erlang, setelement, 3) -> true;
+is_pure(erlang, size, 1) -> true;
+is_pure(erlang, split_binary, 2) -> true;
+is_pure(erlang, term_to_binary, 1) -> true;
+is_pure(erlang, tl, 1) -> true;
+is_pure(erlang, trunc, 1) -> true;
+is_pure(erlang, tuple_to_list, 1) -> true;
+is_pure(lists, append, 2) -> true;
+is_pure(lists, subtract, 2) -> true;
+is_pure(math, acos, 1) -> true;
+is_pure(math, acosh, 1) -> true;
+is_pure(math, asin, 1) -> true;
+is_pure(math, asinh, 1) -> true;
+is_pure(math, atan, 1) -> true;
+is_pure(math, atan2, 2) -> true;
+is_pure(math, atanh, 1) -> true;
+is_pure(math, cos, 1) -> true;
+is_pure(math, cosh, 1) -> true;
+is_pure(math, erf, 1) -> true;
+is_pure(math, erfc, 1) -> true;
+is_pure(math, exp, 1) -> true;
+is_pure(math, log, 1) -> true;
+is_pure(math, log10, 1) -> true;
+is_pure(math, pow, 2) -> true;
+is_pure(math, sin, 1) -> true;
+is_pure(math, sinh, 1) -> true;
+is_pure(math, sqrt, 1) -> true;
+is_pure(math, tan, 1) -> true;
+is_pure(math, tanh, 1) -> true;
+is_pure(_, _, _) -> false.
+
+
+%% =====================================================================
+%% is_safe(Module, Name, Arity) -> boolean()
+%%
+%% Module = Name = atom()
+%% Arity = integer()
+%%
+%% Returns `true' if the function `Module:Name/Arity' is completely
+%% effect free, i.e., if its evaluation always completes normally
+%% and does not affect the state (although the value it returns
+%% might depend on the state).
+
+is_safe(erlang, '/=', 2) -> true;
+is_safe(erlang, '<', 2) -> true;
+is_safe(erlang, '=/=', 2) -> true;
+is_safe(erlang, '=:=', 2) -> true;
+is_safe(erlang, '=<', 2) -> true;
+is_safe(erlang, '==', 2) -> true;
+is_safe(erlang, '>', 2) -> true;
+is_safe(erlang, '>=', 2) -> true;
+is_safe(erlang, date, 0) -> true;
+is_safe(erlang, get, 0) -> true;
+is_safe(erlang, get, 1) -> true;
+is_safe(erlang, get_cookie, 0) -> true;
+is_safe(erlang, get_keys, 1) -> true;
+is_safe(erlang, group_leader, 0) -> true;
+is_safe(erlang, is_alive, 0) -> true;
+is_safe(erlang, is_atom, 1) -> true;
+is_safe(erlang, is_boolean, 1) -> true;
+is_safe(erlang, is_binary, 1) -> true;
+is_safe(erlang, is_constant, 1) -> true;
+is_safe(erlang, is_float, 1) -> true;
+is_safe(erlang, is_function, 1) -> true;
+is_safe(erlang, is_integer, 1) -> true;
+is_safe(erlang, is_list, 1) -> true;
+is_safe(erlang, is_number, 1) -> true;
+is_safe(erlang, is_pid, 1) -> true;
+is_safe(erlang, is_port, 1) -> true;
+is_safe(erlang, is_record, 3) -> true;
+is_safe(erlang, is_reference, 1) -> true;
+is_safe(erlang, is_tuple, 1) -> true;
+is_safe(erlang, make_ref, 0) -> true;
+is_safe(erlang, node, 0) -> true;
+is_safe(erlang, nodes, 0) -> true;
+is_safe(erlang, ports, 0) -> true;
+is_safe(erlang, pre_loaded, 0) -> true;
+is_safe(erlang, processes, 0) -> true;
+is_safe(erlang, registered, 0) -> true;
+is_safe(erlang, self, 0) -> true;
+is_safe(erlang, term_to_binary, 1) -> true;
+is_safe(erlang, time, 0) -> true;
+is_safe(_, _, _) -> false.
diff --git a/lib/dialyzer/test/options1_tests_SUITE_data/src/compiler/rec_env.erl b/lib/dialyzer/test/options1_tests_SUITE_data/src/compiler/rec_env.erl
new file mode 100644
index 0000000000..0dd31b71ea
--- /dev/null
+++ b/lib/dialyzer/test/options1_tests_SUITE_data/src/compiler/rec_env.erl
@@ -0,0 +1,611 @@
+%% =====================================================================
+%% This library is free software; you can redistribute it and/or modify
+%% it under the terms of the GNU Lesser General Public License as
+%% published by the Free Software Foundation; either version 2 of the
+%% License, or (at your option) any later version.
+%%
+%% This library is distributed in the hope that it will be useful, but
+%% WITHOUT ANY WARRANTY; without even the implied warranty of
+%% MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+%% Lesser General Public License for more details.
+%%
+%% You should have received a copy of the GNU Lesser General Public
+%% License along with this library; if not, write to the Free Software
+%% Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
+%% USA
+%%
+%% $Id: rec_env.erl,v 1.2 2009/09/17 09:46:19 kostis Exp $
+%%
+%% @author Richard Carlsson <[email protected]>
+%% @copyright 1999-2004 Richard Carlsson
+%% @doc Abstract environments, supporting self-referential bindings and
+%% automatic new-key generation.
+
+%% The current implementation is based on Erlang standard library
+%% dictionaries.
+
+%%% -define(DEBUG, true).
+
+-module(rec_env).
+
+-export([bind/3, bind_list/3, bind_recursive/4, delete/2, empty/0,
+ get/2, is_defined/2, is_empty/1, keys/1, lookup/2, new_key/1,
+ new_key/2, new_keys/2, new_keys/3, size/1, to_list/1]).
+
+-ifdef(DEBUG).
+-export([test/1, test_custom/1, test_custom/2]).
+-endif.
+
+-ifdef(DEBUG).
+%% Code for testing:
+%%@hidden
+test(N) ->
+ test_0(integer, N).
+
+%%@hidden
+test_custom(N) ->
+ F = fun (X) -> list_to_atom("X"++integer_to_list(X)) end,
+ test_custom(F, N).
+
+%%@hidden
+test_custom(F, N) ->
+ test_0({custom, F}, N).
+
+test_0(Type, N) ->
+ put(new_key_calls, 0),
+ put(new_key_retries, 0),
+ put(new_key_max, 0),
+ Env = test_1(Type, N, empty()),
+ io:fwrite("\ncalls: ~w.\n", [get(new_key_calls)]),
+ io:fwrite("\nretries: ~w.\n", [get(new_key_retries)]),
+ io:fwrite("\nmax: ~w.\n", [get(new_key_max)]),
+ dict:to_list(element(1,Env)).
+
+test_1(integer = Type, N, Env) when integer(N), N > 0 ->
+ Key = new_key(Env),
+ test_1(Type, N - 1, bind(Key, value, Env));
+test_1({custom, F} = Type, N, Env) when integer(N), N > 0 ->
+ Key = new_key(F, Env),
+ test_1(Type, N - 1, bind(Key, value, Env));
+test_1(_,0, Env) ->
+ Env.
+-endif.
+
+
+%% Representation:
+%%
+%% environment() = [Mapping]
+%%
+%% Mapping = {map, Dict} | {rec, Dict, Dict}
+%% Dict = dict:dictionary()
+%%
+%% An empty environment is a list containing a single `{map, Dict}'
+%% element - empty lists are not valid environments. To find a key in an
+%% environment, it is searched for in each mapping in the list, in
+%% order, until it the key is found in some mapping, or the end of the
+%% list is reached. In a 'rec' mapping, we keep the original dictionary
+%% together with a version where entries may have been deleted - this
+%% makes it possible to garbage collect the entire 'rec' mapping when
+%% all its entries are unused (for example, by being shadowed by later
+%% definitions).
+
+
+
+%% =====================================================================
+%% @type environment(). An abstract environment.
+
+
+%% =====================================================================
+%% @spec empty() -> environment()
+%%
+%% @doc Returns an empty environment.
+
+empty() ->
+ [{map, dict:new()}].
+
+
+%% =====================================================================
+%% @spec is_empty(Env::environment()) -> boolean()
+%%
+%% @doc Returns <code>true</code> if the environment is empty, otherwise
+%% <code>false</code>.
+
+is_empty([{map, Dict} | Es]) ->
+ N = dict:size(Dict),
+ if N /= 0 -> false;
+ Es == [] -> true;
+ true -> is_empty(Es)
+ end;
+is_empty([{rec, Dict, _} | Es]) ->
+ N = dict:size(Dict),
+ if N /= 0 -> false;
+ Es == [] -> true;
+ true -> is_empty(Es)
+ end.
+
+
+%% =====================================================================
+%% @spec size(Env::environment()) -> integer()
+%%
+%% @doc Returns the number of entries in an environment.
+
+%% (The name 'size' cannot be used in local calls, since there exists a
+%% built-in function with the same name.)
+
+size(Env) ->
+ env_size(Env).
+
+env_size([{map, Dict}]) ->
+ dict:size(Dict);
+env_size([{map, Dict} | Env]) ->
+ dict:size(Dict) + env_size(Env);
+env_size([{rec, Dict, _Dict0} | Env]) ->
+ dict:size(Dict) + env_size(Env).
+
+
+%% =====================================================================
+%% @spec is_defined(Key, Env) -> boolean()
+%%
+%% Key = term()
+%% Env = environment()
+%%
+%% @doc Returns <code>true</code> if <code>Key</code> is bound in the
+%% environment, otherwise <code>false</code>.
+
+is_defined(Key, [{map, Dict} | Env]) ->
+ case dict:is_key(Key, Dict) of
+ true ->
+ true;
+ false when Env == [] ->
+ false;
+ false ->
+ is_defined(Key, Env)
+ end;
+is_defined(Key, [{rec, Dict, _Dict0} | Env]) ->
+ case dict:is_key(Key, Dict) of
+ true ->
+ true;
+ false ->
+ is_defined(Key, Env)
+ end.
+
+
+%% =====================================================================
+%% @spec keys(Env::environment()) -> [term()]
+%%
+%% @doc Returns the ordered list of all keys in the environment.
+
+keys(Env) ->
+ lists:sort(keys(Env, [])).
+
+keys([{map, Dict}], S) ->
+ dict:fetch_keys(Dict) ++ S;
+keys([{map, Dict} | Env], S) ->
+ keys(Env, dict:fetch_keys(Dict) ++ S);
+keys([{rec, Dict, _Dict0} | Env], S) ->
+ keys(Env, dict:fetch_keys(Dict) ++ S).
+
+
+%% =====================================================================
+%% @spec to_list(Env) -> [{Key, Value}]
+%%
+%% Env = environment()
+%% Key = term()
+%% Value = term()
+%%
+%% @doc Returns an ordered list of <code>{Key, Value}</code> pairs for
+%% all keys in <code>Env</code>. <code>Value</code> is the same as that
+%% returned by {@link get/2}.
+
+to_list(Env) ->
+ lists:sort(to_list(Env, [])).
+
+to_list([{map, Dict}], S) ->
+ dict:to_list(Dict) ++ S;
+to_list([{map, Dict} | Env], S) ->
+ to_list(Env, dict:to_list(Dict) ++ S);
+to_list([{rec, Dict, _Dict0} | Env], S) ->
+ to_list(Env, dict:to_list(Dict) ++ S).
+
+
+%% =====================================================================
+%% @spec bind(Key, Value, Env) -> environment()
+%%
+%% Key = term()
+%% Value = term()
+%% Env = environment()
+%%
+%% @doc Make a nonrecursive entry. This binds <code>Key</code> to
+%% <code>Value</code>. If the key already existed in the environment,
+%% the old entry is replaced.
+
+%% Note that deletion is done to free old bindings so they can be
+%% garbage collected.
+
+bind(Key, Value, [{map, Dict}]) ->
+ [{map, dict:store(Key, Value, Dict)}];
+bind(Key, Value, [{map, Dict} | Env]) ->
+ [{map, dict:store(Key, Value, Dict)} | delete_any(Key, Env)];
+bind(Key, Value, Env) ->
+ [{map, dict:store(Key, Value, dict:new())} | delete_any(Key, Env)].
+
+
+%% =====================================================================
+%% @spec bind_list(Keys, Values, Env) -> environment()
+%%
+%% Keys = [term()]
+%% Values = [term()]
+%% Env = environment()
+%%
+%% @doc Make N nonrecursive entries. This binds each key in
+%% <code>Keys</code> to the corresponding value in
+%% <code>Values</code>. If some key already existed in the environment,
+%% the previous entry is replaced. If <code>Keys</code> does not have
+%% the same length as <code>Values</code>, an exception is generated.
+
+bind_list(Ks, Vs, [{map, Dict}]) ->
+ [{map, store_list(Ks, Vs, Dict)}];
+bind_list(Ks, Vs, [{map, Dict} | Env]) ->
+ [{map, store_list(Ks, Vs, Dict)} | delete_list(Ks, Env)];
+bind_list(Ks, Vs, Env) ->
+ [{map, store_list(Ks, Vs, dict:new())} | delete_list(Ks, Env)].
+
+store_list([K | Ks], [V | Vs], Dict) ->
+ store_list(Ks, Vs, dict:store(K, V, Dict));
+store_list([], _, Dict) ->
+ Dict.
+
+delete_list([K | Ks], Env) ->
+ delete_list(Ks, delete_any(K, Env));
+delete_list([], Env) ->
+ Env.
+
+%% By not calling `delete' unless we have to, we avoid unnecessary
+%% rewriting of the data.
+
+delete_any(Key, Env) ->
+ case is_defined(Key, Env) of
+ true ->
+ delete(Key, Env);
+ false ->
+ Env
+ end.
+
+%% =====================================================================
+%% @spec delete(Key, Env) -> environment()
+%%
+%% Key = term()
+%% Env = environment()
+%%
+%% @doc Delete an entry. This removes <code>Key</code> from the
+%% environment.
+
+delete(Key, [{map, Dict} = E | Env]) ->
+ case dict:is_key(Key, Dict) of
+ true ->
+ [{map, dict:erase(Key, Dict)} | Env];
+ false ->
+ delete_1(Key, Env, E)
+ end;
+delete(Key, [{rec, Dict, Dict0} = E | Env]) ->
+ case dict:is_key(Key, Dict) of
+ true ->
+ %% The Dict0 component must be preserved as it is until all
+ %% keys in Dict have been deleted.
+ Dict1 = dict:erase(Key, Dict),
+ case dict:size(Dict1) of
+ 0 ->
+ Env; % the whole {rec,...} is now garbage
+ _ ->
+ [{rec, Dict1, Dict0} | Env]
+ end;
+ false ->
+ [E | delete(Key, Env)]
+ end.
+
+%% This is just like above, except we pass on the preceding 'map'
+%% mapping in the list to enable merging when removing 'rec' mappings.
+
+delete_1(Key, [{rec, Dict, Dict0} = E | Env], E1) ->
+ case dict:is_key(Key, Dict) of
+ true ->
+ Dict1 = dict:erase(Key, Dict),
+ case dict:size(Dict1) of
+ 0 ->
+ concat(E1, Env);
+ _ ->
+ [E1, {rec, Dict1, Dict0} | Env]
+ end;
+ false ->
+ [E1, E | delete(Key, Env)]
+ end.
+
+concat({map, D1}, [{map, D2} | Env]) ->
+ [dict:merge(fun (_K, V1, _V2) -> V1 end, D1, D2) | Env];
+concat(E1, Env) ->
+ [E1 | Env].
+
+
+%% =====================================================================
+%% @spec bind_recursive(Keys, Values, Fun, Env) -> NewEnv
+%%
+%% Keys = [term()]
+%% Values = [term()]
+%% Fun = (Value, Env) -> term()
+%% Env = environment()
+%% NewEnv = environment()
+%%
+%% @doc Make N recursive entries. This binds each key in
+%% <code>Keys</code> to the value of <code>Fun(Value, NewEnv)</code> for
+%% the corresponding <code>Value</code>. If <code>Keys</code> does not
+%% have the same length as <code>Values</code>, an exception is
+%% generated. If some key already existed in the environment, the old
+%% entry is replaced.
+%%
+%% <p>Note: the function <code>Fun</code> is evaluated each time one of
+%% the stored keys is looked up, but only then.</p>
+%%
+%% <p>Examples:
+%%<pre>
+%% NewEnv = bind_recursive([foo, bar], [1, 2],
+%% fun (V, E) -> V end,
+%% Env)</pre>
+%%
+%% This does nothing interesting; <code>get(foo, NewEnv)</code> yields
+%% <code>1</code> and <code>get(bar, NewEnv)</code> yields
+%% <code>2</code>, but there is more overhead than if the {@link
+%% bind_list/3} function had been used.
+%%
+%% <pre>
+%% NewEnv = bind_recursive([foo, bar], [1, 2],
+%% fun (V, E) -> {V, E} end,
+%% Env)</pre>
+%%
+%% Here, however, <code>get(foo, NewEnv)</code> will yield <code>{1,
+%% NewEnv}</code> and <code>get(bar, NewEnv)</code> will yield <code>{2,
+%% NewEnv}</code>, i.e., the environment <code>NewEnv</code> contains
+%% recursive bindings.</p>
+
+bind_recursive([], [], _, Env) ->
+ Env;
+bind_recursive(Ks, Vs, F, Env) ->
+ F1 = fun (V) ->
+ fun (Dict) -> F(V, [{rec, Dict, Dict} | Env]) end
+ end,
+ Dict = bind_recursive_1(Ks, Vs, F1, dict:new()),
+ [{rec, Dict, Dict} | Env].
+
+bind_recursive_1([K | Ks], [V | Vs], F, Dict) ->
+ bind_recursive_1(Ks, Vs, F, dict:store(K, F(V), Dict));
+bind_recursive_1([], [], _, Dict) ->
+ Dict.
+
+
+%% =====================================================================
+%% @spec lookup(Key, Env) -> error | {ok, Value}
+%%
+%% Key = term()
+%% Env = environment()
+%% Value = term()
+%%
+%% @doc Returns <code>{ok, Value}</code> if <code>Key</code> is bound to
+%% <code>Value</code> in <code>Env</code>, and <code>error</code>
+%% otherwise.
+
+lookup(Key, [{map, Dict} | Env]) ->
+ case dict:find(Key, Dict) of
+ {ok, _}=Value ->
+ Value;
+ error when Env == [] ->
+ error;
+ error ->
+ lookup(Key, Env)
+ end;
+lookup(Key, [{rec, Dict, Dict0} | Env]) ->
+ case dict:find(Key, Dict) of
+ {ok, F} ->
+ {ok, F(Dict0)};
+ error ->
+ lookup(Key, Env)
+ end.
+
+
+%% =====================================================================
+%% @spec get(Key, Env) -> Value
+%%
+%% Key = term()
+%% Env = environment()
+%% Value = term()
+%%
+%% @doc Returns the value that <code>Key</code> is bound to in
+%% <code>Env</code>. Throws <code>{undefined, Key}</code> if the key
+%% does not exist in <code>Env</code>.
+
+get(Key, Env) ->
+ case lookup(Key, Env) of
+ {ok, Value} -> Value;
+ error -> throw({undefined, Key})
+ end.
+
+
+%% =====================================================================
+%% The key-generating algorithm could possibly be further improved. The
+%% important thing to keep in mind is, that when we need a new key, we
+%% are generally in mid-traversal of a syntax tree, and existing names
+%% in the tree may be closely grouped and evenly distributed or even
+%% forming a compact range (often having been generated by a "gensym",
+%% or by this very algorithm itself). This means that if we generate an
+%% identifier whose value is too close to those already seen (i.e.,
+%% which are in the environment), it is very probable that we will
+%% shadow a not-yet-seen identifier further down in the tree, the result
+%% being that we induce another later renaming, and end up renaming most
+%% of the identifiers, completely contrary to our intention. We need to
+%% generate new identifiers in a way that avoids such systematic
+%% collisions.
+%%
+%% One way of getting a new key to try when the previous attempt failed
+%% is of course to e.g. add one to the last tried value. However, in
+%% general it's a bad idea to try adjacent identifiers: the percentage
+%% of retries will typically increase a lot, so you may lose big on the
+%% extra lookups while gaining only a little from the quicker
+%% computation.
+%%
+%% We want an initial range that is large enough for most typical cases.
+%% If we start with, say, a range of 10, we might quickly use up most of
+%% the values in the range 1-10 (or 1-100) for new top-level variables -
+%% but as we start traversing the syntax tree, it is quite likely that
+%% exactly those variables will be encountered again (this depends on
+%% how the names in the tree were created), and will then need to be
+%% renamed. If we instead begin with a larger range, it is less likely
+%% that any top-level names that we introduce will shadow names that we
+%% will find in the tree. Of course we cannot know how large is large
+%% enough: for any initial range, there is some syntax tree that uses
+%% all the values in that range, and thus any top-level names introduced
+%% will shadow names in the tree. The point is to avoid this happening
+%% all the time - a range of about 1000 seems enough for most programs.
+%%
+%% The following values have been shown to work well:
+
+-define(MINIMUM_RANGE, 1000).
+-define(START_RANGE_FACTOR, 50).
+-define(MAX_RETRIES, 2). % retries before enlarging range
+-define(ENLARGE_FACTOR, 10). % range enlargment factor
+
+-ifdef(DEBUG).
+%% If you want to use these process dictionary counters, make sure to
+%% initialise them to zero before you call any of the key-generating
+%% functions.
+%%
+%% new_key_calls total number of calls
+%% new_key_retries failed key generation attempts
+%% new_key_max maximum generated integer value
+%%
+-define(measure_calls(),
+ put(new_key_calls, 1 + get(new_key_calls))).
+-define(measure_max_key(N),
+ case N > get(new_key_max) of
+ true ->
+ put(new_key_max, N);
+ false ->
+ ok
+ end).
+-define(measure_retries(N),
+ put(new_key_retries, get(new_key_retries) + N)).
+-else.
+-define(measure_calls(), ok).
+-define(measure_max_key(N), ok).
+-define(measure_retries(N), ok).
+-endif.
+
+
+%% =====================================================================
+%% @spec new_key(Env::environment()) -> integer()
+%%
+%% @doc Returns an integer which is not already used as key in the
+%% environment. New integers are generated using an algorithm which
+%% tries to keep the values randomly distributed within a reasonably
+%% small range relative to the number of entries in the environment.
+%%
+%% <p>This function uses the Erlang standard library module
+%% <code>random</code> to generate new keys.</p>
+%%
+%% <p>Note that only the new key is returned; the environment itself is
+%% not updated by this function.</p>
+
+new_key(Env) ->
+ new_key(fun (X) -> X end, Env).
+
+
+%% =====================================================================
+%% @spec new_key(Function, Env) -> term()
+%%
+%% Function = (integer()) -> term()
+%% Env = environment()
+%%
+%% @doc Returns a term which is not already used as key in the
+%% environment. The term is generated by applying <code>Function</code>
+%% to an integer generated as in {@link new_key/1}.
+%%
+%% <p>Note that only the generated term is returned; the environment
+%% itself is not updated by this function.</p>
+
+new_key(F, Env) ->
+ ?measure_calls(),
+ R = start_range(Env),
+%%% io:fwrite("Start range: ~w.\n", [R]),
+ new_key(R, F, Env).
+
+new_key(R, F, Env) ->
+ new_key(generate(R, R), R, 0, F, Env).
+
+new_key(N, R, T, F, Env) when T < ?MAX_RETRIES ->
+ A = F(N),
+ case is_defined(A, Env) of
+ true ->
+%%% io:fwrite("CLASH: ~w.\n", [A]),
+ new_key(generate(N, R), R, T + 1, F, Env);
+ false ->
+ ?measure_max_key(N),
+ ?measure_retries(T),
+%%% io:fwrite("New: ~w.\n", [N]),
+ A
+ end;
+new_key(N, R, _T, F, Env) ->
+ %% Too many retries - enlarge the range and start over.
+ ?measure_retries((_T + 1)),
+ R1 = trunc(R * ?ENLARGE_FACTOR),
+%%% io:fwrite("**NEW RANGE**: ~w.\n", [R1]),
+ new_key(generate(N, R1), R1, 0, F, Env).
+
+start_range(Env) ->
+ max(env_size(Env) * ?START_RANGE_FACTOR, ?MINIMUM_RANGE).
+
+max(X, Y) when X > Y -> X;
+max(_, Y) -> Y.
+
+%% The previous key might or might not be used to compute the next key
+%% to be tried. It is currently not used.
+%%
+%% In order to avoid causing cascading renamings, it is important that
+%% this function does not generate values in order, but
+%% (pseudo-)randomly distributed over the range.
+
+generate(_N, Range) ->
+ random:uniform(Range). % works well
+
+
+%% =====================================================================
+%% @spec new_keys(N, Env) -> [integer()]
+%%
+%% N = integer()
+%% Env = environment()
+%%
+%% @doc Returns a list of <code>N</code> distinct integers that are not
+%% already used as keys in the environment. See {@link new_key/1} for
+%% details.
+
+new_keys(N, Env) when integer(N) ->
+ new_keys(N, fun (X) -> X end, Env).
+
+
+%% =====================================================================
+%% @spec new_keys(N, Function, Env) -> [term()]
+%%
+%% N = integer()
+%% Function = (integer()) -> term()
+%% Env = environment()
+%%
+%% @doc Returns a list of <code>N</code> distinct terms that are not
+%% already used as keys in the environment. See {@link new_key/3} for
+%% details.
+
+new_keys(N, F, Env) when integer(N) ->
+ R = start_range(Env),
+ new_keys(N, [], R, F, Env).
+
+new_keys(N, Ks, R, F, Env) when N > 0 ->
+ Key = new_key(R, F, Env),
+ Env1 = bind(Key, true, Env), % dummy binding
+ new_keys(N - 1, [Key | Ks], R, F, Env1);
+new_keys(0, Ks, _, _, _) ->
+ Ks.
diff --git a/lib/dialyzer/test/options1_tests_SUITE_data/src/compiler/sys_expand_pmod.erl b/lib/dialyzer/test/options1_tests_SUITE_data/src/compiler/sys_expand_pmod.erl
new file mode 100644
index 0000000000..c5052b0e51
--- /dev/null
+++ b/lib/dialyzer/test/options1_tests_SUITE_data/src/compiler/sys_expand_pmod.erl
@@ -0,0 +1,425 @@
+%% ``The contents of this file are subject to the Erlang Public License,
+%% Version 1.1, (the "License"); you may not use this file except in
+%% compliance with the License. You should have received a copy of the
+%% Erlang Public License along with this software. If not, it can be
+%% retrieved via the world wide web at http://www.erlang.org/.
+%%
+%% Software distributed under the License is distributed on an "AS IS"
+%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
+%% the License for the specific language governing rights and limitations
+%% under the License.
+%%
+%% The Initial Developer of the Original Code is Ericsson Utvecklings AB.
+%% Portions created by Ericsson are Copyright 1999, Ericsson Utvecklings
+%% AB. All Rights Reserved.''
+%%
+%% $Id: sys_expand_pmod.erl,v 1.1 2008/12/17 09:53:42 mikpe Exp $
+%%
+-module(sys_expand_pmod).
+
+%% Expand function definition forms of parameterized module. We assume
+%% all record definitions, imports, queries, etc., have been expanded
+%% away. Any calls on the form 'foo(...)' must be calls to local
+%% functions. Auto-generated functions (module_info,...) have not yet
+%% been added to the function definitions, but are listed in 'defined'
+%% and 'exports'. The 'new/N' function is neither added to the
+%% definitions nor to the 'exports'/'defines' lists yet.
+
+-export([forms/4]).
+
+-record(pmod, {parameters, exports, defined, predef}).
+
+%% TODO: more abstract handling of predefined/static functions.
+
+forms(Fs0, Ps, Es0, Ds0) ->
+ PreDef = [{module_info,0},{module_info,1}],
+ forms(Fs0, Ps, Es0, Ds0, PreDef).
+
+forms(Fs0, Ps, Es0, Ds0, PreDef) ->
+ St0 = #pmod{parameters=Ps,exports=Es0,defined=Ds0, predef=PreDef},
+ {Fs1, St1} = forms(Fs0, St0),
+ Es1 = update_function_names(Es0, St1),
+ Ds1 = update_function_names(Ds0, St1),
+ Fs2 = update_forms(Fs1, St1),
+ {Fs2,Es1,Ds1}.
+
+%% This is extremely simplistic for now; all functions get an extra
+%% parameter, whether they need it or not, except for static functions.
+
+update_function_names(Es, St) ->
+ [update_function_name(E, St) || E <- Es].
+
+update_function_name(E={F,A}, St) ->
+ case ordsets:is_element(E, St#pmod.predef) of
+ true -> E;
+ false -> {F, A + 1}
+ end.
+
+update_forms([{function,L,N,A,Cs}|Fs],St) ->
+ [{function,L,N,A+1,Cs}|update_forms(Fs,St)];
+update_forms([F|Fs],St) ->
+ [F|update_forms(Fs,St)];
+update_forms([],_St) ->
+ [].
+
+%% Process the program forms.
+
+forms([F0|Fs0],St0) ->
+ {F1,St1} = form(F0,St0),
+ {Fs1,St2} = forms(Fs0,St1),
+ {[F1|Fs1],St2};
+forms([], St0) ->
+ {[], St0}.
+
+%% Only function definitions are of interest here. State is not updated.
+form({function,Line,Name0,Arity0,Clauses0},St) ->
+ {Name,Arity,Clauses} = function(Name0, Arity0, Clauses0, St),
+ {{function,Line,Name,Arity,Clauses},St};
+%% Pass anything else through
+form(F,St) -> {F,St}.
+
+function(Name, Arity, Clauses0, St) ->
+ Clauses1 = clauses(Clauses0,St),
+ {Name,Arity,Clauses1}.
+
+clauses([C|Cs],St) ->
+ {clause,L,H,G,B} = clause(C,St),
+ T = {tuple,L,[{var,L,V} || V <- ['_'|St#pmod.parameters]]},
+ [{clause,L,H++[{match,L,T,{var,L,'THIS'}}],G,B}|clauses(Cs,St)];
+clauses([],_St) -> [].
+
+clause({clause,Line,H0,G0,B0},St) ->
+ H1 = head(H0,St),
+ G1 = guard(G0,St),
+ B1 = exprs(B0,St),
+ {clause,Line,H1,G1,B1}.
+
+head(Ps,St) -> patterns(Ps,St).
+
+patterns([P0|Ps],St) ->
+ P1 = pattern(P0,St),
+ [P1|patterns(Ps,St)];
+patterns([],_St) -> [].
+
+string_to_conses([], _Line, Tail) ->
+ Tail;
+string_to_conses([E|Rest], Line, Tail) ->
+ {cons, Line, {integer, Line, E}, string_to_conses(Rest, Line, Tail)}.
+
+pattern({var,Line,V},_St) -> {var,Line,V};
+pattern({match,Line,L0,R0},St) ->
+ L1 = pattern(L0,St),
+ R1 = pattern(R0,St),
+ {match,Line,L1,R1};
+pattern({integer,Line,I},_St) -> {integer,Line,I};
+pattern({char,Line,C},_St) -> {char,Line,C};
+pattern({float,Line,F},_St) -> {float,Line,F};
+pattern({atom,Line,A},_St) -> {atom,Line,A};
+pattern({string,Line,S},_St) -> {string,Line,S};
+pattern({nil,Line},_St) -> {nil,Line};
+pattern({cons,Line,H0,T0},St) ->
+ H1 = pattern(H0,St),
+ T1 = pattern(T0,St),
+ {cons,Line,H1,T1};
+pattern({tuple,Line,Ps0},St) ->
+ Ps1 = pattern_list(Ps0,St),
+ {tuple,Line,Ps1};
+pattern({bin,Line,Fs},St) ->
+ Fs2 = pattern_grp(Fs,St),
+ {bin,Line,Fs2};
+pattern({op,_Line,'++',{nil,_},R},St) ->
+ pattern(R,St);
+pattern({op,_Line,'++',{cons,Li,{char,C2,I},T},R},St) ->
+ pattern({cons,Li,{char,C2,I},{op,Li,'++',T,R}},St);
+pattern({op,_Line,'++',{cons,Li,{integer,L2,I},T},R},St) ->
+ pattern({cons,Li,{integer,L2,I},{op,Li,'++',T,R}},St);
+pattern({op,_Line,'++',{string,Li,L},R},St) ->
+ pattern(string_to_conses(L, Li, R),St);
+pattern({op,Line,Op,A},_St) ->
+ {op,Line,Op,A};
+pattern({op,Line,Op,L,R},_St) ->
+ {op,Line,Op,L,R}.
+
+pattern_grp([{bin_element,L1,E1,S1,T1} | Fs],St) ->
+ S2 = case S1 of
+ default ->
+ default;
+ _ ->
+ expr(S1,St)
+ end,
+ T2 = case T1 of
+ default ->
+ default;
+ _ ->
+ bit_types(T1)
+ end,
+ [{bin_element,L1,expr(E1,St),S2,T2} | pattern_grp(Fs,St)];
+pattern_grp([],_St) ->
+ [].
+
+bit_types([]) ->
+ [];
+bit_types([Atom | Rest]) when atom(Atom) ->
+ [Atom | bit_types(Rest)];
+bit_types([{Atom, Integer} | Rest]) when atom(Atom), integer(Integer) ->
+ [{Atom, Integer} | bit_types(Rest)].
+
+pattern_list([P0|Ps],St) ->
+ P1 = pattern(P0,St),
+ [P1|pattern_list(Ps,St)];
+pattern_list([],_St) -> [].
+
+guard([G0|Gs],St) when list(G0) ->
+ [guard0(G0,St) | guard(Gs,St)];
+guard(L,St) ->
+ guard0(L,St).
+
+guard0([G0|Gs],St) ->
+ G1 = guard_test(G0,St),
+ [G1|guard0(Gs,St)];
+guard0([],_St) -> [].
+
+guard_test(Expr={call,Line,{atom,La,F},As0},St) ->
+ case erl_internal:type_test(F, length(As0)) of
+ true ->
+ As1 = gexpr_list(As0,St),
+ {call,Line,{atom,La,F},As1};
+ _ ->
+ gexpr(Expr,St)
+ end;
+guard_test(Any,St) ->
+ gexpr(Any,St).
+
+gexpr({var,L,V},_St) ->
+ {var,L,V};
+% %% alternative implementation of accessing module parameters
+% case index(V,St#pmod.parameters) of
+% N when N > 0 ->
+% {call,L,{remote,L,{atom,L,erlang},{atom,L,element}},
+% [{integer,L,N+1},{var,L,'THIS'}]};
+% _ ->
+% {var,L,V}
+% end;
+gexpr({integer,Line,I},_St) -> {integer,Line,I};
+gexpr({char,Line,C},_St) -> {char,Line,C};
+gexpr({float,Line,F},_St) -> {float,Line,F};
+gexpr({atom,Line,A},_St) -> {atom,Line,A};
+gexpr({string,Line,S},_St) -> {string,Line,S};
+gexpr({nil,Line},_St) -> {nil,Line};
+gexpr({cons,Line,H0,T0},St) ->
+ H1 = gexpr(H0,St),
+ T1 = gexpr(T0,St),
+ {cons,Line,H1,T1};
+gexpr({tuple,Line,Es0},St) ->
+ Es1 = gexpr_list(Es0,St),
+ {tuple,Line,Es1};
+gexpr({call,Line,{atom,La,F},As0},St) ->
+ case erl_internal:guard_bif(F, length(As0)) of
+ true -> As1 = gexpr_list(As0,St),
+ {call,Line,{atom,La,F},As1}
+ end;
+% Pre-expansion generated calls to erlang:is_record/3 must also be handled
+gexpr({call,Line,{remote,La,{atom,Lb,erlang},{atom,Lc,is_record}},As0},St)
+ when length(As0) == 3 ->
+ As1 = gexpr_list(As0,St),
+ {call,Line,{remote,La,{atom,Lb,erlang},{atom,Lc,is_record}},As1};
+% Guard bif's can be remote, but only in the module erlang...
+gexpr({call,Line,{remote,La,{atom,Lb,erlang},{atom,Lc,F}},As0},St) ->
+ case erl_internal:guard_bif(F, length(As0)) or
+ erl_internal:arith_op(F, length(As0)) or
+ erl_internal:comp_op(F, length(As0)) or
+ erl_internal:bool_op(F, length(As0)) of
+ true -> As1 = gexpr_list(As0,St),
+ {call,Line,{remote,La,{atom,Lb,erlang},{atom,Lc,F}},As1}
+ end;
+% Unfortunately, writing calls as {M,F}(...) is also allowed.
+gexpr({call,Line,{tuple,La,[{atom,Lb,erlang},{atom,Lc,F}]},As0},St) ->
+ case erl_internal:guard_bif(F, length(As0)) or
+ erl_internal:arith_op(F, length(As0)) or
+ erl_internal:comp_op(F, length(As0)) or
+ erl_internal:bool_op(F, length(As0)) of
+ true -> As1 = gexpr_list(As0,St),
+ {call,Line,{tuple,La,[{atom,Lb,erlang},{atom,Lc,F}]},As1}
+ end;
+gexpr({bin,Line,Fs},St) ->
+ Fs2 = pattern_grp(Fs,St),
+ {bin,Line,Fs2};
+gexpr({op,Line,Op,A0},St) ->
+ case erl_internal:arith_op(Op, 1) or
+ erl_internal:bool_op(Op, 1) of
+ true -> A1 = gexpr(A0,St),
+ {op,Line,Op,A1}
+ end;
+gexpr({op,Line,Op,L0,R0},St) ->
+ case erl_internal:arith_op(Op, 2) or
+ erl_internal:bool_op(Op, 2) or
+ erl_internal:comp_op(Op, 2) of
+ true ->
+ L1 = gexpr(L0,St),
+ R1 = gexpr(R0,St),
+ {op,Line,Op,L1,R1}
+ end.
+
+gexpr_list([E0|Es],St) ->
+ E1 = gexpr(E0,St),
+ [E1|gexpr_list(Es,St)];
+gexpr_list([],_St) -> [].
+
+exprs([E0|Es],St) ->
+ E1 = expr(E0,St),
+ [E1|exprs(Es,St)];
+exprs([],_St) -> [].
+
+expr({var,L,V},_St) ->
+ {var,L,V};
+% case index(V,St#pmod.parameters) of
+% N when N > 0 ->
+% {call,L,{remote,L,{atom,L,erlang},{atom,L,element}},
+% [{integer,L,N+1},{var,L,'THIS'}]};
+% _ ->
+% {var,L,V}
+% end;
+expr({integer,Line,I},_St) -> {integer,Line,I};
+expr({float,Line,F},_St) -> {float,Line,F};
+expr({atom,Line,A},_St) -> {atom,Line,A};
+expr({string,Line,S},_St) -> {string,Line,S};
+expr({char,Line,C},_St) -> {char,Line,C};
+expr({nil,Line},_St) -> {nil,Line};
+expr({cons,Line,H0,T0},St) ->
+ H1 = expr(H0,St),
+ T1 = expr(T0,St),
+ {cons,Line,H1,T1};
+expr({lc,Line,E0,Qs0},St) ->
+ Qs1 = lc_quals(Qs0,St),
+ E1 = expr(E0,St),
+ {lc,Line,E1,Qs1};
+expr({tuple,Line,Es0},St) ->
+ Es1 = expr_list(Es0,St),
+ {tuple,Line,Es1};
+expr({block,Line,Es0},St) ->
+ Es1 = exprs(Es0,St),
+ {block,Line,Es1};
+expr({'if',Line,Cs0},St) ->
+ Cs1 = icr_clauses(Cs0,St),
+ {'if',Line,Cs1};
+expr({'case',Line,E0,Cs0},St) ->
+ E1 = expr(E0,St),
+ Cs1 = icr_clauses(Cs0,St),
+ {'case',Line,E1,Cs1};
+expr({'receive',Line,Cs0},St) ->
+ Cs1 = icr_clauses(Cs0,St),
+ {'receive',Line,Cs1};
+expr({'receive',Line,Cs0,To0,ToEs0},St) ->
+ To1 = expr(To0,St),
+ ToEs1 = exprs(ToEs0,St),
+ Cs1 = icr_clauses(Cs0,St),
+ {'receive',Line,Cs1,To1,ToEs1};
+expr({'try',Line,Es0,Scs0,Ccs0,As0},St) ->
+ Es1 = exprs(Es0,St),
+ Scs1 = icr_clauses(Scs0,St),
+ Ccs1 = icr_clauses(Ccs0,St),
+ As1 = exprs(As0,St),
+ {'try',Line,Es1,Scs1,Ccs1,As1};
+expr({'fun',Line,Body,Info},St) ->
+ case Body of
+ {clauses,Cs0} ->
+ Cs1 = fun_clauses(Cs0,St),
+ {'fun',Line,{clauses,Cs1},Info};
+ {function,F,A} ->
+ {F1,A1} = update_function_name({F,A},St),
+ if A1 == A ->
+ {'fun',Line,{function,F,A},Info};
+ true ->
+ %% Must rewrite local fun-name to a fun that does a
+ %% call with the extra THIS parameter.
+ As = make_vars(A, Line),
+ As1 = As ++ [{var,Line,'THIS'}],
+ Call = {call,Line,{atom,Line,F1},As1},
+ Cs = [{clause,Line,As,[],[Call]}],
+ {'fun',Line,{clauses,Cs},Info}
+ end;
+ {function,M,F,A} -> %This is an error in lint!
+ {'fun',Line,{function,M,F,A},Info}
+ end;
+expr({call,Lc,{atom,_,new}=Name,As0},#pmod{parameters=Ps}=St)
+ when length(As0) =:= length(Ps) ->
+ %% The new() function does not take a 'THIS' argument (it's static).
+ As1 = expr_list(As0,St),
+ {call,Lc,Name,As1};
+expr({call,Lc,{atom,_,module_info}=Name,As0},St)
+ when length(As0) == 0; length(As0) == 1 ->
+ %% The module_info/0 and module_info/1 functions are also static.
+ As1 = expr_list(As0,St),
+ {call,Lc,Name,As1};
+expr({call,Lc,{atom,Lf,F},As0},St) ->
+ %% Local function call - needs THIS parameter.
+ As1 = expr_list(As0,St),
+ {call,Lc,{atom,Lf,F},As1 ++ [{var,0,'THIS'}]};
+expr({call,Line,F0,As0},St) ->
+ %% Other function call
+ F1 = expr(F0,St),
+ As1 = expr_list(As0,St),
+ {call,Line,F1,As1};
+expr({'catch',Line,E0},St) ->
+ E1 = expr(E0,St),
+ {'catch',Line,E1};
+expr({match,Line,P0,E0},St) ->
+ E1 = expr(E0,St),
+ P1 = pattern(P0,St),
+ {match,Line,P1,E1};
+expr({bin,Line,Fs},St) ->
+ Fs2 = pattern_grp(Fs,St),
+ {bin,Line,Fs2};
+expr({op,Line,Op,A0},St) ->
+ A1 = expr(A0,St),
+ {op,Line,Op,A1};
+expr({op,Line,Op,L0,R0},St) ->
+ L1 = expr(L0,St),
+ R1 = expr(R0,St),
+ {op,Line,Op,L1,R1};
+%% The following are not allowed to occur anywhere!
+expr({remote,Line,M0,F0},St) ->
+ M1 = expr(M0,St),
+ F1 = expr(F0,St),
+ {remote,Line,M1,F1}.
+
+expr_list([E0|Es],St) ->
+ E1 = expr(E0,St),
+ [E1|expr_list(Es,St)];
+expr_list([],_St) -> [].
+
+icr_clauses([C0|Cs],St) ->
+ C1 = clause(C0,St),
+ [C1|icr_clauses(Cs,St)];
+icr_clauses([],_St) -> [].
+
+lc_quals([{generate,Line,P0,E0}|Qs],St) ->
+ E1 = expr(E0,St),
+ P1 = pattern(P0,St),
+ [{generate,Line,P1,E1}|lc_quals(Qs,St)];
+lc_quals([E0|Qs],St) ->
+ E1 = expr(E0,St),
+ [E1|lc_quals(Qs,St)];
+lc_quals([],_St) -> [].
+
+fun_clauses([C0|Cs],St) ->
+ C1 = clause(C0,St),
+ [C1|fun_clauses(Cs,St)];
+fun_clauses([],_St) -> [].
+
+% %% Return index from 1 upwards, or 0 if not in the list.
+%
+% index(X,Ys) -> index(X,Ys,1).
+%
+% index(X,[X|Ys],A) -> A;
+% index(X,[Y|Ys],A) -> index(X,Ys,A+1);
+% index(X,[],A) -> 0.
+
+make_vars(N, L) ->
+ make_vars(1, N, L).
+
+make_vars(N, M, L) when N =< M ->
+ V = list_to_atom("X"++integer_to_list(N)),
+ [{var,L,V} | make_vars(N + 1, M, L)];
+make_vars(_, _, _) ->
+ [].
diff --git a/lib/dialyzer/test/options1_tests_SUITE_data/src/compiler/sys_pre_attributes.erl b/lib/dialyzer/test/options1_tests_SUITE_data/src/compiler/sys_pre_attributes.erl
new file mode 100644
index 0000000000..6e68611c66
--- /dev/null
+++ b/lib/dialyzer/test/options1_tests_SUITE_data/src/compiler/sys_pre_attributes.erl
@@ -0,0 +1,212 @@
+%% ``The contents of this file are subject to the Erlang Public License,
+%% Version 1.1, (the "License"); you may not use this file except in
+%% compliance with the License. You should have received a copy of the
+%% Erlang Public License along with this software. If not, it can be
+%% retrieved via the world wide web at http://www.erlang.org/.
+%%
+%% Software distributed under the License is distributed on an "AS IS"
+%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
+%% the License for the specific language governing rights and limitations
+%% under the License.
+%%
+%% The Initial Developer of the Original Code is Ericsson Utvecklings AB.
+%% Portions created by Ericsson are Copyright 1999, Ericsson Utvecklings
+%% AB. All Rights Reserved.''
+%%
+%% $Id: sys_pre_attributes.erl,v 1.1 2008/12/17 09:53:42 mikpe Exp $
+%%
+%% Purpose : Transform Erlang compiler attributes
+
+-module(sys_pre_attributes).
+
+-export([parse_transform/2]).
+
+-define(OPTION_TAG, attributes).
+
+-record(state, {forms,
+ pre_ops = [],
+ post_ops = [],
+ options}).
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%% Inserts, deletes and replaces Erlang compiler attributes.
+%%
+%% Valid options are:
+%%
+%% {attribute, insert, AttrName, NewAttrVal}
+%% {attribute, replace, AttrName, NewAttrVal} % replace first occurrence
+%% {attribute, delete, AttrName}
+%%
+%% The transformation is performed in two passes:
+%%
+%% pre_transform
+%% -------------
+%% Searches for attributes in the list of Forms in order to
+%% delete or replace them. 'delete' will delete all occurrences
+%% of attributes with the given name. 'replace' will replace the
+%% first occurrence of the attribute. This pass is will only be
+%% performed if there are replace or delete operations stated
+%% as options.
+%%
+%% post_transform
+%% -------------
+%% Looks up the module attribute and inserts the new attributes
+%% directly after. This pass will only be performed if there are
+%% any attributes left to be inserted after pre_transform. The left
+%% overs will be those replace operations that not has been performed
+%% due to that the pre_transform pass did not find the attribute plus
+%% all insert operations.
+
+parse_transform(Forms, Options) ->
+ S = #state{forms = Forms, options = Options},
+ S2 = init_transform(S),
+ report_verbose("Pre options: ~p~n", [S2#state.pre_ops], S2),
+ report_verbose("Post options: ~p~n", [S2#state.post_ops], S2),
+ S3 = pre_transform(S2),
+ S4 = post_transform(S3),
+ S4#state.forms.
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%% Computes the lists of pre_ops and post_ops that are
+%% used in the real transformation.
+init_transform(S) ->
+ case S#state.options of
+ Options when list(Options) ->
+ init_transform(Options, S);
+ Option ->
+ init_transform([Option], S)
+ end.
+
+init_transform([{attribute, insert, Name, Val} | Tail], S) ->
+ Op = {insert, Name, Val},
+ PostOps = [Op | S#state.post_ops],
+ init_transform(Tail, S#state{post_ops = PostOps});
+init_transform([{attribute, replace, Name, Val} | Tail], S) ->
+ Op = {replace, Name, Val},
+ PreOps = [Op | S#state.pre_ops],
+ PostOps = [Op | S#state.post_ops],
+ init_transform(Tail, S#state{pre_ops = PreOps, post_ops = PostOps});
+init_transform([{attribute, delete, Name} | Tail], S) ->
+ Op = {delete, Name},
+ PreOps = [Op | S#state.pre_ops],
+ init_transform(Tail, S#state{pre_ops = PreOps});
+init_transform([], S) ->
+ S;
+init_transform([_ | T], S) ->
+ init_transform(T, S);
+init_transform(BadOpt, S) ->
+ report_error("Illegal option (ignored): ~p~n", [BadOpt], S),
+ S.
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%% Handle delete and perhaps replace
+
+pre_transform(S) when S#state.pre_ops == [] ->
+ S;
+pre_transform(S) ->
+ pre_transform(S#state.forms, [], S).
+
+pre_transform([H | T], Acc, S) ->
+ case H of
+ {attribute, Line, Name, Val} ->
+ case lists:keysearch(Name, 2, S#state.pre_ops) of
+ false ->
+ pre_transform(T, [H | Acc], S);
+
+ {value, {replace, Name, NewVal}} ->
+ report_warning("Replace attribute ~p: ~p -> ~p~n",
+ [Name, Val, NewVal],
+ S),
+ New = {attribute, Line, Name, NewVal},
+ Pre = lists:keydelete(Name, 2, S#state.pre_ops),
+ Post = lists:keydelete(Name, 2, S#state.post_ops),
+ S2 = S#state{pre_ops = Pre, post_ops = Post},
+ if
+ Pre == [] ->
+ %% No need to search the rest of the Forms
+ Forms = lists:reverse(Acc, [New | T]),
+ S2#state{forms = Forms};
+ true ->
+ pre_transform(T, [New | Acc], S2)
+ end;
+
+ {value, {delete, Name}} ->
+ report_warning("Delete attribute ~p: ~p~n",
+ [Name, Val],
+ S),
+ pre_transform(T, Acc, S)
+ end;
+ _Any ->
+ pre_transform(T, [H | Acc], S)
+ end;
+pre_transform([], Acc, S) ->
+ S#state{forms = lists:reverse(Acc)}.
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%% Handle insert and perhaps replace
+
+post_transform(S) when S#state.post_ops == [] ->
+ S;
+post_transform(S) ->
+ post_transform(S#state.forms, [], S).
+
+post_transform([H | T], Acc, S) ->
+ case H of
+ {attribute, Line, module, Val} ->
+ Acc2 = lists:reverse([{attribute, Line, module, Val} | Acc]),
+ Forms = Acc2 ++ attrs(S#state.post_ops, Line, S) ++ T,
+ S#state{forms = Forms, post_ops = []};
+ _Any ->
+ post_transform(T, [H | Acc], S)
+ end;
+post_transform([], Acc, S) ->
+ S#state{forms = lists:reverse(Acc)}.
+
+attrs([{replace, Name, NewVal} | T], Line, S) ->
+ report_verbose("Insert attribute ~p: ~p~n", [Name, NewVal], S),
+ [{attribute, Line, Name, NewVal} | attrs(T, Line, S)];
+attrs([{insert, Name, NewVal} | T], Line, S) ->
+ report_verbose("Insert attribute ~p: ~p~n", [Name, NewVal], S),
+ [{attribute, Line, Name, NewVal} | attrs(T, Line, S)];
+attrs([], _, _) ->
+ [].
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%% Report functions.
+%%
+%% Errors messages are controlled with the 'report_errors' compiler option
+%% Warning messages are controlled with the 'report_warnings' compiler option
+%% Verbose messages are controlled with the 'verbose' compiler option
+
+report_error(Format, Args, S) ->
+ case is_error(S) of
+ true ->
+ io:format("~p: * ERROR * " ++ Format, [?MODULE | Args]);
+ false ->
+ ok
+ end.
+
+report_warning(Format, Args, S) ->
+ case is_warning(S) of
+ true ->
+ io:format("~p: * WARNING * " ++ Format, [?MODULE | Args]);
+ false ->
+ ok
+ end.
+
+report_verbose(Format, Args, S) ->
+ case is_verbose(S) of
+ true ->
+ io:format("~p: " ++ Format, [?MODULE | Args]);
+ false ->
+ ok
+ end.
+
+is_error(S) ->
+ lists:member(report_errors, S#state.options) or is_verbose(S).
+
+is_warning(S) ->
+ lists:member(report_warnings, S#state.options) or is_verbose(S).
+
+is_verbose(S) ->
+ lists:member(verbose, S#state.options).
diff --git a/lib/dialyzer/test/options1_tests_SUITE_data/src/compiler/sys_pre_expand.erl b/lib/dialyzer/test/options1_tests_SUITE_data/src/compiler/sys_pre_expand.erl
new file mode 100644
index 0000000000..5e7c1c8bbd
--- /dev/null
+++ b/lib/dialyzer/test/options1_tests_SUITE_data/src/compiler/sys_pre_expand.erl
@@ -0,0 +1,1026 @@
+%% ``The contents of this file are subject to the Erlang Public License,
+%% Version 1.1, (the "License"); you may not use this file except in
+%% compliance with the License. You should have received a copy of the
+%% Erlang Public License along with this software. If not, it can be
+%% retrieved via the world wide web at http://www.erlang.org/.
+%%
+%% Software distributed under the License is distributed on an "AS IS"
+%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
+%% the License for the specific language governing rights and limitations
+%% under the License.
+%%
+%% The Initial Developer of the Original Code is Ericsson Utvecklings AB.
+%% Portions created by Ericsson are Copyright 1999, Ericsson Utvecklings
+%% AB. All Rights Reserved.''
+%%
+%% $Id: sys_pre_expand.erl,v 1.1 2008/12/17 09:53:42 mikpe Exp $
+%%
+%% Purpose : Expand some source Erlang constructions. This is part of the
+%% pre-processing phase.
+
+%% N.B. Although structs (tagged tuples) are not yet allowed in the
+%% language there is code included in pattern/2 and expr/3 (commented out)
+%% that handles them by transforming them to tuples.
+
+-module(sys_pre_expand).
+
+%% Main entry point.
+-export([module/2]).
+
+-import(ordsets, [from_list/1,add_element/2,
+ union/1,union/2,intersection/1,intersection/2,subtract/2]).
+-import(lists, [member/2,map/2,foldl/3,foldr/3,sort/1,reverse/1,duplicate/2]).
+
+-include("../my_include/erl_bits.hrl").
+
+-record(expand, {module=[], %Module name
+ parameters=undefined, %Module parameters
+ package="", %Module package
+ exports=[], %Exports
+ imports=[], %Imports
+ mod_imports, %Module Imports
+ compile=[], %Compile flags
+ records=dict:new(), %Record definitions
+ attributes=[], %Attributes
+ defined=[], %Defined functions
+ vcount=0, %Variable counter
+ func=[], %Current function
+ arity=[], %Arity for current function
+ fcount=0, %Local fun count
+ fun_index=0, %Global index for funs
+ bitdefault,
+ bittypes
+ }).
+
+%% module(Forms, CompileOptions)
+%% {ModuleName,Exports,TransformedForms}
+%% Expand the forms in one module. N.B.: the lists of predefined
+%% exports and imports are really ordsets!
+
+module(Fs, Opts) ->
+ %% Set pre-defined exported functions.
+ PreExp = [{module_info,0},{module_info,1}],
+
+ %% Set pre-defined module imports.
+ PreModImp = [{erlang,erlang},{packages,packages}],
+
+ %% Build initial expand record.
+ St0 = #expand{exports=PreExp,
+ mod_imports=dict:from_list(PreModImp),
+ compile=Opts,
+ defined=PreExp,
+ bitdefault = erl_bits:system_bitdefault(),
+ bittypes = erl_bits:system_bittypes()
+ },
+ %% Expand the functions.
+ {Tfs,St1} = forms(Fs, foldl(fun define_function/2, St0, Fs)),
+ {Efs,St2} = expand_pmod(Tfs, St1),
+ %% Get the correct list of exported functions.
+ Exports = case member(export_all, St2#expand.compile) of
+ true -> St2#expand.defined;
+ false -> St2#expand.exports
+ end,
+ %% Generate all functions from stored info.
+ {Ats,St3} = module_attrs(St2#expand{exports = Exports}),
+ {Mfs,St4} = module_predef_funcs(St3),
+ {St4#expand.module, St4#expand.exports, Ats ++ Efs ++ Mfs,
+ St4#expand.compile}.
+
+expand_pmod(Fs0, St) ->
+ case St#expand.parameters of
+ undefined ->
+ {Fs0,St};
+ Ps ->
+ {Fs1,Xs,Ds} = sys_expand_pmod:forms(Fs0, Ps,
+ St#expand.exports,
+ St#expand.defined),
+ A = length(Ps),
+ Vs = [{var,0,V} || V <- Ps],
+ N = {atom,0,St#expand.module},
+ B = [{tuple,0,[N|Vs]}],
+ F = {function,0,new,A,[{clause,0,Vs,[],B}]},
+ As = St#expand.attributes,
+ {[F|Fs1],St#expand{exports=add_element({new,A}, Xs),
+ defined=add_element({new,A}, Ds),
+ attributes = [{abstract, true} | As]}}
+ end.
+
+%% -type define_function(Form, State) -> State.
+%% Add function to defined if form a function.
+
+define_function({function,_,N,A,_Cs}, St) ->
+ St#expand{defined=add_element({N,A}, St#expand.defined)};
+define_function(_, St) -> St.
+
+module_attrs(St) ->
+ {[{attribute,0,Name,Val} || {Name,Val} <- St#expand.attributes],St}.
+
+module_predef_funcs(St) ->
+ PreDef = [{module_info,0},{module_info,1}],
+ PreExp = PreDef,
+ {[{function,0,module_info,0,
+ [{clause,0,[],[],
+ [{call,0,{remote,0,{atom,0,erlang},{atom,0,get_module_info}},
+ [{atom,0,St#expand.module}]}]}]},
+ {function,0,module_info,1,
+ [{clause,0,[{var,0,'X'}],[],
+ [{call,0,{remote,0,{atom,0,erlang},{atom,0,get_module_info}},
+ [{atom,0,St#expand.module},{var,0,'X'}]}]}]}],
+ St#expand{defined=union(from_list(PreDef), St#expand.defined),
+ exports=union(from_list(PreExp), St#expand.exports)}}.
+
+%% forms(Forms, State) ->
+%% {TransformedForms,State'}
+%% Process the forms. Attributes are lost and just affect the state.
+%% Ignore uninteresting forms like eof and type.
+
+forms([{attribute,_,Name,Val}|Fs0], St0) ->
+ St1 = attribute(Name, Val, St0),
+ forms(Fs0, St1);
+forms([{function,L,N,A,Cs}|Fs0], St0) ->
+ {Ff,St1} = function(L, N, A, Cs, St0),
+ {Fs,St2} = forms(Fs0, St1),
+ {[Ff|Fs],St2};
+forms([_|Fs], St) -> forms(Fs, St);
+forms([], St) -> {[],St}.
+
+%% -type attribute(Attribute, Value, State) ->
+%% State.
+%% Process an attribute, this just affects the state.
+
+attribute(module, {Module, As}, St) ->
+ M = package_to_string(Module),
+ St#expand{module=list_to_atom(M),
+ package = packages:strip_last(M),
+ parameters=As};
+attribute(module, Module, St) ->
+ M = package_to_string(Module),
+ St#expand{module=list_to_atom(M),
+ package = packages:strip_last(M)};
+attribute(export, Es, St) ->
+ St#expand{exports=union(from_list(Es), St#expand.exports)};
+attribute(import, Is, St) ->
+ import(Is, St);
+attribute(compile, C, St) when list(C) ->
+ St#expand{compile=St#expand.compile ++ C};
+attribute(compile, C, St) ->
+ St#expand{compile=St#expand.compile ++ [C]};
+attribute(record, {Name,Defs}, St) ->
+ St#expand{records=dict:store(Name, normalise_fields(Defs),
+ St#expand.records)};
+attribute(file, _File, St) -> St; %This is ignored
+attribute(Name, Val, St) when list(Val) ->
+ St#expand{attributes=St#expand.attributes ++ [{Name,Val}]};
+attribute(Name, Val, St) ->
+ St#expand{attributes=St#expand.attributes ++ [{Name,[Val]}]}.
+
+function(L, N, A, Cs0, St0) ->
+ {Cs,St} = clauses(Cs0, St0#expand{func=N,arity=A,fcount=0}),
+ {{function,L,N,A,Cs},St}.
+
+%% -type clauses([Clause], State) ->
+%% {[TransformedClause],State}.
+%% Expand function clauses.
+
+clauses([{clause,Line,H0,G0,B0}|Cs0], St0) ->
+ {H,Hvs,_Hus,St1} = head(H0, St0),
+ {G,Gvs,_Gus,St2} = guard(G0, Hvs, St1),
+ {B,_Bvs,_Bus,St3} = exprs(B0, union(Hvs, Gvs), St2),
+ {Cs,St4} = clauses(Cs0, St3),
+ {[{clause,Line,H,G,B}|Cs],St4};
+clauses([], St) -> {[],St}.
+
+%% head(HeadPatterns, State) ->
+%% {TransformedPatterns,Variables,UsedVariables,State'}
+
+head(As, St) -> pattern_list(As, St).
+
+%% pattern(Pattern, State) ->
+%% {TransformedPattern,Variables,UsedVariables,State'}
+%% BITS: added used variables for bit patterns with varaible length
+%%
+
+pattern({var,_,'_'}=Var, St) -> %Ignore anonymous variable.
+ {Var,[],[],St};
+pattern({var,_,V}=Var, St) ->
+ {Var,[V],[],St};
+pattern({char,_,_}=Char, St) ->
+ {Char,[],[],St};
+pattern({integer,_,_}=Int, St) ->
+ {Int,[],[],St};
+pattern({float,_,_}=Float, St) ->
+ {Float,[],[],St};
+pattern({atom,_,_}=Atom, St) ->
+ {Atom,[],[],St};
+pattern({string,_,_}=String, St) ->
+ {String,[],[],St};
+pattern({nil,_}=Nil, St) ->
+ {Nil,[],[],St};
+pattern({cons,Line,H,T}, St0) ->
+ {TH,THvs,Hus,St1} = pattern(H, St0),
+ {TT,TTvs,Tus,St2} = pattern(T, St1),
+ {{cons,Line,TH,TT},union(THvs, TTvs),union(Hus,Tus),St2};
+pattern({tuple,Line,Ps}, St0) ->
+ {TPs,TPsvs,Tus,St1} = pattern_list(Ps, St0),
+ {{tuple,Line,TPs},TPsvs,Tus,St1};
+%%pattern({struct,Line,Tag,Ps}, St0) ->
+%% {TPs,TPsvs,St1} = pattern_list(Ps, St0),
+%% {{tuple,Line,[{atom,Line,Tag}|TPs]},TPsvs,St1};
+pattern({record_field,_,_,_}=M, St) ->
+ {expand_package(M, St), [], [], St}; % must be a package name
+pattern({record_index,Line,Name,Field}, St) ->
+ {index_expr(Line, Field, Name, record_fields(Name, St)),[],[],St};
+pattern({record,Line,Name,Pfs}, St0) ->
+ Fs = record_fields(Name, St0),
+ {TMs,TMsvs,Us,St1} = pattern_list(pattern_fields(Fs, Pfs), St0),
+ {{tuple,Line,[{atom,Line,Name}|TMs]},TMsvs,Us,St1};
+pattern({bin,Line,Es0}, St0) ->
+ {Es1,Esvs,Esus,St1} = pattern_bin(Es0, St0),
+ {{bin,Line,Es1},Esvs,Esus,St1};
+pattern({op,_,'++',{nil,_},R}, St) ->
+ pattern(R, St);
+pattern({op,_,'++',{cons,Li,H,T},R}, St) ->
+ pattern({cons,Li,H,{op,Li,'++',T,R}}, St);
+pattern({op,_,'++',{string,Li,L},R}, St) ->
+ pattern(string_to_conses(Li, L, R), St);
+pattern({match,Line,Pat1, Pat2}, St0) ->
+ {TH,Hvt,Hus,St1} = pattern(Pat2, St0),
+ {TT,Tvt,Tus,St2} = pattern(Pat1, St1),
+ {{match,Line,TT,TH}, union(Hvt,Tvt), union(Hus,Tus), St2};
+%% Compile-time pattern expressions, including unary operators.
+pattern({op,Line,Op,A}, St) ->
+ { erl_eval:partial_eval({op,Line,Op,A}), [], [], St};
+pattern({op,Line,Op,L,R}, St) ->
+ { erl_eval:partial_eval({op,Line,Op,L,R}), [], [], St}.
+
+pattern_list([P0|Ps0], St0) ->
+ {P,Pvs,Pus,St1} = pattern(P0, St0),
+ {Ps,Psvs,Psus,St2} = pattern_list(Ps0, St1),
+ {[P|Ps],union(Pvs, Psvs),union(Pus, Psus),St2};
+pattern_list([], St) -> {[],[],[],St}.
+
+%% guard(Guard, VisibleVariables, State) ->
+%% {TransformedGuard,NewVariables,UsedVariables,State'}
+%% Transform a list of guard tests. We KNOW that this has been checked
+%% and what the guards test are. Use expr for transforming the guard
+%% expressions.
+
+guard([G0|Gs0], Vs, St0) ->
+ {G,Hvs,Hus,St1} = guard_tests(G0, Vs, St0),
+ {Gs,Tvs,Tus,St2} = guard(Gs0, Vs, St1),
+ {[G|Gs],union(Hvs, Tvs),union(Hus, Tus),St2};
+guard([], _, St) -> {[],[],[],St}.
+
+guard_tests([Gt0|Gts0], Vs, St0) ->
+ {Gt1,Gvs,Gus,St1} = guard_test(Gt0, Vs, St0),
+ {Gts1,Gsvs,Gsus,St2} = guard_tests(Gts0, union(Gvs, Vs), St1),
+ {[Gt1|Gts1],union(Gvs, Gsvs),union(Gus, Gsus),St2};
+guard_tests([], _, St) -> {[],[],[],St}.
+
+guard_test({call,Line,{atom,_,record},[A,{atom,_,Name}]}, Vs, St) ->
+ record_test_in_guard(Line, A, Name, Vs, St);
+guard_test({call,Line,{atom,Lt,Tname},As}, Vs, St) ->
+ %% XXX This is ugly. We can remove this workaround if/when
+ %% we'll allow 'andalso' in guards. For now, we must have
+ %% different code in guards and in bodies.
+ Test = {remote,Lt,
+ {atom,Lt,erlang},
+ {atom,Lt,normalise_test(Tname, length(As))}},
+ put(sys_pre_expand_in_guard, yes),
+ R = expr({call,Line,Test,As}, Vs, St),
+ erase(sys_pre_expand_in_guard),
+ R;
+guard_test(Test, Vs, St) ->
+ %% XXX See the previous clause.
+ put(sys_pre_expand_in_guard, yes),
+ R = expr(Test, Vs, St),
+ erase(sys_pre_expand_in_guard),
+ R.
+
+%% record_test(Line, Term, Name, Vs, St) -> TransformedExpr
+%% Generate code for is_record/1.
+
+record_test(Line, Term, Name, Vs, St) ->
+ case get(sys_pre_expand_in_guard) of
+ undefined ->
+ record_test_in_body(Line, Term, Name, Vs, St);
+ yes ->
+ record_test_in_guard(Line, Term, Name, Vs, St)
+ end.
+
+record_test_in_guard(Line, Term, Name, Vs, St) ->
+ %% Notes: (1) To keep is_record/3 properly atomic (e.g. when inverted
+ %% using 'not'), we cannot convert it to an instruction
+ %% sequence here. It must remain a single call.
+ %% (2) Later passes assume that the last argument (the size)
+ %% is a literal.
+ %% (3) We don't want calls to erlang:is_record/3 (in the source code)
+ %% confused we the internal instruction. (Reason: (2) above +
+ %% code bloat.)
+ %% (4) Xref may be run on the abstract code, so the name in the
+ %% abstract code must be erlang:is_record/3.
+ %% (5) To achive both (3) and (4) at the same time, set the name
+ %% here to erlang:is_record/3, but mark it as compiler-generated.
+ %% The v3_core pass will change the name to erlang:internal_is_record/3.
+ Fs = record_fields(Name, St),
+ expr({call,-Line,{remote,-Line,{atom,-Line,erlang},{atom,-Line,is_record}},
+ [Term,{atom,Line,Name},{integer,Line,length(Fs)+1}]},
+ Vs, St).
+
+record_test_in_body(Line, Expr, Name, Vs, St0) ->
+ %% As Expr may have side effects, we must evaluate it
+ %% first and bind the value to a new variable.
+ %% We must use also handle the case that Expr does not
+ %% evaluate to a tuple properly.
+ Fs = record_fields(Name, St0),
+ {Var,St} = new_var(Line, St0),
+
+ expr({block,Line,
+ [{match,Line,Var,Expr},
+ {op,Line,
+ 'andalso',
+ {call,Line,{atom,Line,is_tuple},[Var]},
+ {op,Line,'andalso',
+ {op,Line,'=:=',
+ {call,Line,{atom,Line,size},[Var]},
+ {integer,Line,length(Fs)+1}},
+ {op,Line,'=:=',
+ {call,Line,{atom,Line,element},[{integer,Line,1},Var]},
+ {atom,Line,Name}}}}]}, Vs, St).
+
+normalise_test(atom, 1) -> is_atom;
+normalise_test(binary, 1) -> is_binary;
+normalise_test(constant, 1) -> is_constant;
+normalise_test(float, 1) -> is_float;
+normalise_test(function, 1) -> is_function;
+normalise_test(integer, 1) -> is_integer;
+normalise_test(list, 1) -> is_list;
+normalise_test(number, 1) -> is_number;
+normalise_test(pid, 1) -> is_pid;
+normalise_test(port, 1) -> is_port;
+normalise_test(reference, 1) -> is_reference;
+normalise_test(tuple, 1) -> is_tuple;
+normalise_test(Name, _) -> Name.
+
+%% exprs(Expressions, VisibleVariables, State) ->
+%% {TransformedExprs,NewVariables,UsedVariables,State'}
+
+exprs([E0|Es0], Vs, St0) ->
+ {E,Evs,Eus,St1} = expr(E0, Vs, St0),
+ {Es,Esvs,Esus,St2} = exprs(Es0, union(Evs, Vs), St1),
+ {[E|Es],union(Evs, Esvs),union(Eus, Esus),St2};
+exprs([], _, St) -> {[],[],[],St}.
+
+%% expr(Expression, VisibleVariables, State) ->
+%% {TransformedExpression,NewVariables,UsedVariables,State'}
+
+expr({var,_,V}=Var, _Vs, St) ->
+ {Var,[],[V],St};
+expr({char,_,_}=Char, _Vs, St) ->
+ {Char,[],[],St};
+expr({integer,_,_}=Int, _Vs, St) ->
+ {Int,[],[],St};
+expr({float,_,_}=Float, _Vs, St) ->
+ {Float,[],[],St};
+expr({atom,_,_}=Atom, _Vs, St) ->
+ {Atom,[],[],St};
+expr({string,_,_}=String, _Vs, St) ->
+ {String,[],[],St};
+expr({nil,_}=Nil, _Vs, St) ->
+ {Nil,[],[],St};
+expr({cons,Line,H0,T0}, Vs, St0) ->
+ {H,Hvs,Hus,St1} = expr(H0, Vs, St0),
+ {T,Tvs,Tus,St2} = expr(T0, Vs, St1),
+ {{cons,Line,H,T},union(Hvs, Tvs),union(Hus, Tus),St2};
+expr({lc,Line,E0,Qs0}, Vs, St0) ->
+ {E1,Qs1,_,Lvs,Lus,St1} = lc_tq(Line, E0, Qs0, {nil,Line}, Vs, St0),
+ {{lc,Line,E1,Qs1},Lvs,Lus,St1};
+expr({tuple,Line,Es0}, Vs, St0) ->
+ {Es1,Esvs,Esus,St1} = expr_list(Es0, Vs, St0),
+ {{tuple,Line,Es1},Esvs,Esus,St1};
+%%expr({struct,Line,Tag,Es0}, Vs, St0) ->
+%% {Es1,Esvs,Esus,St1} = expr_list(Es0, Vs, St0),
+%% {{tuple,Line,[{atom,Line,Tag}|Es1]},Esvs,Esus,St1};
+expr({record_field,_,_,_}=M, _Vs, St) ->
+ {expand_package(M, St), [], [], St}; % must be a package name
+expr({record_index,Line,Name,F}, Vs, St) ->
+ I = index_expr(Line, F, Name, record_fields(Name, St)),
+ expr(I, Vs, St);
+expr({record,Line,Name,Is}, Vs, St) ->
+ expr({tuple,Line,[{atom,Line,Name}|
+ record_inits(record_fields(Name, St), Is)]},
+ Vs, St);
+expr({record_field,Line,R,Name,F}, Vs, St) ->
+ I = index_expr(Line, F, Name, record_fields(Name, St)),
+ expr({call,Line,{atom,Line,element},[I,R]}, Vs, St);
+expr({record,_,R,Name,Us}, Vs, St0) ->
+ {Ue,St1} = record_update(R, Name, record_fields(Name, St0), Us, St0),
+ expr(Ue, Vs, St1);
+expr({bin,Line,Es0}, Vs, St0) ->
+ {Es1,Esvs,Esus,St1} = expr_bin(Es0, Vs, St0),
+ {{bin,Line,Es1},Esvs,Esus,St1};
+expr({block,Line,Es0}, Vs, St0) ->
+ {Es,Esvs,Esus,St1} = exprs(Es0, Vs, St0),
+ {{block,Line,Es},Esvs,Esus,St1};
+expr({'if',Line,Cs0}, Vs, St0) ->
+ {Cs,Csvss,Csuss,St1} = icr_clauses(Cs0, Vs, St0),
+ All = new_in_all(Vs, Csvss),
+ {{'if',Line,Cs},All,union(Csuss),St1};
+expr({'case',Line,E0,Cs0}, Vs, St0) ->
+ {E,Evs,Eus,St1} = expr(E0, Vs, St0),
+ {Cs,Csvss,Csuss,St2} = icr_clauses(Cs0, union(Evs, Vs), St1),
+ All = new_in_all(Vs, Csvss),
+ {{'case',Line,E,Cs},union(Evs, All),union([Eus|Csuss]),St2};
+expr({'cond',Line,Cs}, Vs, St0) ->
+ {V,St1} = new_var(Line,St0),
+ expr(cond_clauses(Cs,V), Vs, St1);
+expr({'receive',Line,Cs0}, Vs, St0) ->
+ {Cs,Csvss,Csuss,St1} = icr_clauses(Cs0, Vs, St0),
+ All = new_in_all(Vs, Csvss),
+ {{'receive',Line,Cs},All,union(Csuss),St1};
+expr({'receive',Line,Cs0,To0,ToEs0}, Vs, St0) ->
+ {To,Tovs,Tous,St1} = expr(To0, Vs, St0),
+ {ToEs,ToEsvs,_ToEsus,St2} = exprs(ToEs0, Vs, St1),
+ {Cs,Csvss,Csuss,St3} = icr_clauses(Cs0, Vs, St2),
+ All = new_in_all(Vs, [ToEsvs|Csvss]),
+ {{'receive',Line,Cs,To,ToEs},union(Tovs, All),union([Tous|Csuss]),St3};
+expr({'fun',Line,Body}, Vs, St) ->
+ fun_tq(Line, Body, Vs, St);
+%%% expr({call,_,{atom,La,this_module},[]}, _Vs, St) ->
+%%% {{atom,La,St#expand.module}, [], [], St};
+%%% expr({call,_,{atom,La,this_package},[]}, _Vs, St) ->
+%%% {{atom,La,list_to_atom(St#expand.package)}, [], [], St};
+%%% expr({call,_,{atom,La,this_package},[{atom,_,Name}]}, _Vs, St) ->
+%%% M = packages:concat(St#expand.package,Name),
+%%% {{atom,La,list_to_atom(M)}, [], [], St};
+%%% expr({call,Line,{atom,La,this_package},[A]}, Vs, St) ->
+%%% M = {call,Line,{remote,La,{atom,La,packages},{atom,La,concat}},
+%%% [{string,La,St#expand.package}, A]},
+%%% expr({call,Line,{atom,Line,list_to_atom},[M]}, Vs, St);
+expr({call,Line,{atom,_,is_record},[A,{atom,_,Name}]}, Vs, St) ->
+ record_test(Line, A, Name, Vs, St);
+expr({call,Line,{remote,_,{atom,_,erlang},{atom,_,is_record}},
+ [A,{atom,_,Name}]}, Vs, St) ->
+ record_test(Line, A, Name, Vs, St);
+expr({call,Line,{atom,La,N},As0}, Vs, St0) ->
+ {As,Asvs,Asus,St1} = expr_list(As0, Vs, St0),
+ Ar = length(As),
+ case erl_internal:bif(N, Ar) of
+ true ->
+ {{call,Line,{remote,La,{atom,La,erlang},{atom,La,N}},As},
+ Asvs,Asus,St1};
+ false ->
+ case imported(N, Ar, St1) of
+ {yes,Mod} ->
+ {{call,Line,{remote,La,{atom,La,Mod},{atom,La,N}},As},
+ Asvs,Asus,St1};
+ no ->
+ case {N,Ar} of
+ {record_info,2} ->
+ record_info_call(Line, As, St1);
+ _ ->
+ {{call,Line,{atom,La,N},As},Asvs,Asus,St1}
+ end
+ end
+ end;
+expr({call,Line,{record_field,_,_,_}=M,As0}, Vs, St0) ->
+ expr({call,Line,expand_package(M, St0),As0}, Vs, St0);
+expr({call,Line,{remote,Lr,M,F},As0}, Vs, St0) ->
+ M1 = expand_package(M, St0),
+ {[M2,F1|As1],Asvs,Asus,St1} = expr_list([M1,F|As0], Vs, St0),
+ {{call,Line,{remote,Lr,M2,F1},As1},Asvs,Asus,St1};
+expr({call,Line,{tuple,_,[{atom,_,_}=M,{atom,_,_}=F]},As}, Vs, St) ->
+ %% Rewrite {Mod,Function}(Args...) to Mod:Function(Args...).
+ expr({call,Line,{remote,Line,M,F},As}, Vs, St);
+expr({call,Line,F,As0}, Vs, St0) ->
+ {[Fun1|As1],Asvs,Asus,St1} = expr_list([F|As0], Vs, St0),
+ {{call,Line,Fun1,As1},Asvs,Asus,St1};
+expr({'try',Line,Es0,Scs0,Ccs0,As0}, Vs, St0) ->
+ {Es1,Esvs,Esus,St1} = exprs(Es0, Vs, St0),
+ Cvs = union(Esvs, Vs),
+ {Scs1,Scsvss,Scsuss,St2} = icr_clauses(Scs0, Cvs, St1),
+ {Ccs1,Ccsvss,Ccsuss,St3} = icr_clauses(Ccs0, Cvs, St2),
+ Csvss = Scsvss ++ Ccsvss,
+ Csuss = Scsuss ++ Ccsuss,
+ All = new_in_all(Vs, Csvss),
+ {As1,Asvs,Asus,St4} = exprs(As0, Cvs, St3),
+ {{'try',Line,Es1,Scs1,Ccs1,As1}, union([Asvs,Esvs,All]),
+ union([Esus,Asus|Csuss]), St4};
+expr({'catch',Line,E0}, Vs, St0) ->
+ %% Catch exports no new variables.
+ {E,_Evs,Eus,St1} = expr(E0, Vs, St0),
+ {{'catch',Line,E},[],Eus,St1};
+expr({match,Line,P0,E0}, Vs, St0) ->
+ {E,Evs,Eus,St1} = expr(E0, Vs, St0),
+ {P,Pvs,Pus,St2} = pattern(P0, St1),
+ {{match,Line,P,E},
+ union(subtract(Pvs, Vs), Evs),
+ union(intersection(Pvs, Vs), union(Eus,Pus)),St2};
+expr({op,L,'andalso',E1,E2}, Vs, St0) ->
+ {V,St1} = new_var(L,St0),
+ E = make_bool_switch(L,E1,V,
+ make_bool_switch(L,E2,V,{atom,L,true},
+ {atom,L,false}),
+ {atom,L,false}),
+ expr(E, Vs, St1);
+expr({op,L,'orelse',E1,E2}, Vs, St0) ->
+ {V,St1} = new_var(L,St0),
+ E = make_bool_switch(L,E1,V,{atom,L,true},
+ make_bool_switch(L,E2,V,{atom,L,true},
+ {atom,L,false})),
+ expr(E, Vs, St1);
+expr({op,Line,'++',{lc,Ll,E0,Qs0},M0}, Vs, St0) ->
+ {E1,Qs1,M1,Lvs,Lus,St1} = lc_tq(Ll, E0, Qs0, M0, Vs, St0),
+ {{op,Line,'++',{lc,Ll,E1,Qs1},M1},Lvs,Lus,St1};
+expr({op,_,'++',{string,L1,S1},{string,_,S2}}, _Vs, St) ->
+ {{string,L1,S1 ++ S2},[],[],St};
+expr({op,Ll,'++',{string,L1,S1}=Str,R0}, Vs, St0) ->
+ {R1,Rvs,Rus,St1} = expr(R0, Vs, St0),
+ E = case R1 of
+ {string,_,S2} -> {string,L1,S1 ++ S2};
+ _Other when length(S1) < 8 -> string_to_conses(L1, S1, R1);
+ _Other -> {op,Ll,'++',Str,R1}
+ end,
+ {E,Rvs,Rus,St1};
+expr({op,Ll,'++',{cons,Lc,H,T},L2}, Vs, St) ->
+ expr({cons,Ll,H,{op,Lc,'++',T,L2}}, Vs, St);
+expr({op,_,'++',{nil,_},L2}, Vs, St) ->
+ expr(L2, Vs, St);
+expr({op,Line,Op,A0}, Vs, St0) ->
+ {A,Avs,Aus,St1} = expr(A0, Vs, St0),
+ {{op,Line,Op,A},Avs,Aus,St1};
+expr({op,Line,Op,L0,R0}, Vs, St0) ->
+ {L,Lvs,Lus,St1} = expr(L0, Vs, St0),
+ {R,Rvs,Rus,St2} = expr(R0, Vs, St1),
+ {{op,Line,Op,L,R},union(Lvs, Rvs),union(Lus, Rus),St2}.
+
+expr_list([E0|Es0], Vs, St0) ->
+ {E,Evs,Eus,St1} = expr(E0, Vs, St0),
+ {Es,Esvs,Esus,St2} = expr_list(Es0, Vs, St1),
+ {[E|Es],union(Evs, Esvs),union(Eus, Esus),St2};
+expr_list([], _, St) ->
+ {[],[],[],St}.
+
+%% icr_clauses([Clause], [VisibleVariable], State) ->
+%% {[TransformedClause],[[NewVariable]],[[UsedVariable]],State'}
+%% Be very careful here to return the variables that are really used
+%% and really new.
+
+icr_clauses([], _, St) ->
+ {[],[[]],[],St};
+icr_clauses(Clauses, Vs, St) ->
+ icr_clauses2(Clauses, Vs, St).
+
+icr_clauses2([{clause,Line,H0,G0,B0}|Cs0], Vs, St0) ->
+ {H,Hvs,Hus,St1} = head(H0, St0), %Hvs is really used!
+ {G,Gvs,Gus,St2} = guard(G0, union(Hvs, Vs), St1),
+ {B,Bvs,Bus,St3} = exprs(B0, union([Vs,Hvs,Gvs]), St2),
+ New = subtract(union([Hvs,Gvs,Bvs]), Vs), %Really new
+ Used = intersection(union([Hvs,Hus,Gus,Bus]), Vs), %Really used
+ {Cs,Csvs,Csus,St4} = icr_clauses2(Cs0, Vs, St3),
+ {[{clause,Line,H,G,B}|Cs],[New|Csvs],[Used|Csus],St4};
+icr_clauses2([], _, St) ->
+ {[],[],[],St}.
+
+%% lc_tq(Line, Expr, Qualifiers, More, [VisibleVar], State) ->
+%% {TransExpr,[TransQual],TransMore,[NewVar],[UsedVar],State'}
+
+lc_tq(Line, E0, [{generate,Lg,P0,G0}|Qs0], M0, Vs, St0) ->
+ {G1,Gvs,Gus,St1} = expr(G0, Vs, St0),
+ {P1,Pvs,Pus,St2} = pattern(P0, St1),
+ {E1,Qs1,M1,Lvs,Lus,St3} = lc_tq(Line, E0, Qs0, M0, union(Pvs, Vs), St2),
+ {E1,[{generate,Lg,P1,G1}|Qs1],M1,
+ union(Gvs, Lvs),union([Gus,Pus,Lus]),St3};
+lc_tq(Line, E0, [F0|Qs0], M0, Vs, St0) ->
+ %% Allow record/2 and expand out as guard test.
+ case erl_lint:is_guard_test(F0) of
+ true ->
+ {F1,Fvs,_Fus,St1} = guard_tests([F0], Vs, St0),
+ {E1,Qs1,M1,Lvs,Lus,St2} = lc_tq(Line, E0, Qs0, M0, union(Fvs, Vs), St1),
+ {E1,F1++Qs1,M1,Lvs,Lus,St2};
+ false ->
+ {F1,Fvs,_Fus,St1} = expr(F0, Vs, St0),
+ {E1,Qs1,M1,Lvs,Lus,St2} = lc_tq(Line, E0, Qs0, M0, union(Fvs, Vs), St1),
+ {E1,[F1|Qs1],M1,Lvs,Lus,St2}
+ end;
+lc_tq(_Line, E0, [], M0, Vs, St0) ->
+ {E1,Evs,Eus,St1} = expr(E0, Vs, St0),
+ {M1,Mvs,Mus,St2} = expr(M0, Vs, St1),
+ {E1,[],M1,union(Evs, Mvs),union(Eus, Mus),St2}.
+
+%% fun_tq(Line, Body, VisibleVariables, State) ->
+%% {Fun,NewVariables,UsedVariables,State'}
+%% Transform an "explicit" fun {'fun', Line, {clauses, Cs}} into an
+%% extended form {'fun', Line, {clauses, Cs}, Info}, unless it is the
+%% name of a BIF (erl_lint has checked that it is not an import).
+%% Process the body sequence directly to get the new and used variables.
+%% "Implicit" funs {'fun', Line, {function, F, A}} are not changed.
+
+fun_tq(Lf, {function,F,A}, Vs, St0) ->
+ {As,St1} = new_vars(A, Lf, St0),
+ Cs = [{clause,Lf,As,[],[{call,Lf,{atom,Lf,F},As}]}],
+ case erl_internal:bif(F, A) of
+ true ->
+ fun_tq(Lf, {clauses,Cs}, Vs, St1);
+ false ->
+ Index = St0#expand.fun_index,
+ Uniq = erlang:hash(Cs, (1 bsl 27)-1),
+ {Fname,St2} = new_fun_name(St1),
+ {{'fun',Lf,{function,F,A},{Index,Uniq,Fname}},[],[],
+ St2#expand{fun_index=Index+1}}
+ end;
+fun_tq(Lf, {clauses,Cs0}, Vs, St0) ->
+ Uniq = erlang:hash(Cs0, (1 bsl 27)-1),
+ {Cs1,_Hvss,Frees,St1} = fun_clauses(Cs0, Vs, St0),
+ Ufrees = union(Frees),
+ Index = St1#expand.fun_index,
+ {Fname,St2} = new_fun_name(St1),
+ {{'fun',Lf,{clauses,Cs1},{Index,Uniq,Fname}},[],Ufrees,
+ St2#expand{fun_index=Index+1}}.
+
+fun_clauses([{clause,L,H0,G0,B0}|Cs0], Vs, St0) ->
+ {H,Hvs,Hus,St1} = head(H0, St0),
+ {G,Gvs,Gus,St2} = guard(G0, union(Hvs, Vs), St1),
+ {B,Bvs,Bus,St3} = exprs(B0, union([Vs,Hvs,Gvs]), St2),
+ %% Free variables cannot be new anywhere in the clause.
+ Free = subtract(union([Gus,Hus,Bus]), union([Hvs,Gvs,Bvs])),
+ %%io:format(" Gus :~p~n Bvs :~p~n Bus :~p~n Free:~p~n" ,[Gus,Bvs,Bus,Free]),
+ {Cs,Hvss,Frees,St4} = fun_clauses(Cs0, Vs, St3),
+ {[{clause,L,H,G,B}|Cs],[Hvs|Hvss],[Free|Frees],St4};
+fun_clauses([], _, St) -> {[],[],[],St}.
+
+%% new_fun_name(State) -> {FunName,State}.
+
+new_fun_name(#expand{func=F,arity=A,fcount=I}=St) ->
+ Name = "-" ++ atom_to_list(F) ++ "/" ++ integer_to_list(A)
+ ++ "-fun-" ++ integer_to_list(I) ++ "-",
+ {list_to_atom(Name),St#expand{fcount=I+1}}.
+
+
+%% normalise_fields([RecDef]) -> [Field].
+%% Normalise the field definitions to always have a default value. If
+%% none has been given then use 'undefined'.
+
+normalise_fields(Fs) ->
+ map(fun ({record_field,Lf,Field}) ->
+ {record_field,Lf,Field,{atom,Lf,undefined}};
+ (F) -> F end, Fs).
+
+%% record_fields(RecordName, State)
+%% find_field(FieldName, Fields)
+
+record_fields(R, St) -> dict:fetch(R, St#expand.records).
+
+find_field(F, [{record_field,_,{atom,_,F},Val}|_]) -> {ok,Val};
+find_field(F, [_|Fs]) -> find_field(F, Fs);
+find_field(_, []) -> error.
+
+%% field_names(RecFields) -> [Name].
+%% Return a list of the field names structures.
+
+field_names(Fs) ->
+ map(fun ({record_field,_,Field,_Val}) -> Field end, Fs).
+
+%% index_expr(Line, FieldExpr, Name, Fields) -> IndexExpr.
+%% Return an expression which evaluates to the index of a
+%% field. Currently only handle the case where the field is an
+%% atom. This expansion must be passed through expr again.
+
+index_expr(Line, {atom,_,F}, _Name, Fs) ->
+ {integer,Line,index_expr(F, Fs, 2)}.
+
+index_expr(F, [{record_field,_,{atom,_,F},_}|_], I) -> I;
+index_expr(F, [_|Fs], I) ->
+ index_expr(F, Fs, I+1).
+
+%% pattern_fields([RecDefField], [Match]) -> [Pattern].
+%% Build a list of match patterns for the record tuple elements.
+%% This expansion must be passed through pattern again. N.B. We are
+%% scanning the record definition field list!
+
+pattern_fields(Fs, Ms) ->
+ Wildcard = record_wildcard_init(Ms),
+ map(fun ({record_field,L,{atom,_,F},_}) ->
+ case find_field(F, Ms) of
+ {ok,Match} -> Match;
+ error when Wildcard =:= none -> {var,L,'_'};
+ error -> Wildcard
+ end end,
+ Fs).
+
+%% record_inits([RecDefField], [Init]) -> [InitExpr].
+%% Build a list of initialisation expressions for the record tuple
+%% elements. This expansion must be passed through expr
+%% again. N.B. We are scanning the record definition field list!
+
+record_inits(Fs, Is) ->
+ WildcardInit = record_wildcard_init(Is),
+ map(fun ({record_field,_,{atom,_,F},D}) ->
+ case find_field(F, Is) of
+ {ok,Init} -> Init;
+ error when WildcardInit =:= none -> D;
+ error -> WildcardInit
+ end end,
+ Fs).
+
+record_wildcard_init([{record_field,_,{var,_,'_'},D}|_]) -> D;
+record_wildcard_init([_|Is]) -> record_wildcard_init(Is);
+record_wildcard_init([]) -> none.
+
+%% record_update(Record, RecordName, [RecDefField], [Update], State) ->
+%% {Expr,State'}
+%% Build an expression to update fields in a record returning a new
+%% record. Try to be smart and optimise this. This expansion must be
+%% passed through expr again.
+
+record_update(R, Name, Fs, Us0, St0) ->
+ Line = element(2, R),
+ {Pre,Us,St1} = record_exprs(Us0, St0),
+ Nf = length(Fs), %# of record fields
+ Nu = length(Us), %# of update fields
+ Nc = Nf - Nu, %# of copy fields
+
+ %% We need a new variable for the record expression
+ %% to guarantee that it is only evaluated once.
+ {Var,St2} = new_var(Line, St1),
+
+ %% Try to be intelligent about which method of updating record to use.
+ {Update,St} =
+ if
+ Nu == 0 -> {R,St2}; %No fields updated
+ Nu =< Nc -> %Few fields updated
+ {record_setel(Var, Name, Fs, Us), St2};
+ true -> %The wide area inbetween
+ record_match(Var, Name, Fs, Us, St2)
+ end,
+ {{block,element(2, R),Pre ++ [{match,Line,Var,R},Update]},St}.
+
+%% record_match(Record, RecordName, [RecDefField], [Update], State)
+%% Build a 'case' expression to modify record fields.
+
+record_match(R, Name, Fs, Us, St0) ->
+ {Ps,News,St1} = record_upd_fs(Fs, Us, St0),
+ Lr = element(2, hd(Us)),
+ {{'case',Lr,R,
+ [{clause,Lr,[{tuple,Lr,[{atom,Lr,Name}|Ps]}],[],
+ [{tuple,Lr,[{atom,Lr,Name}|News]}]},
+ {clause,Lr,[{var,Lr,'_'}],[],
+ [call_error(Lr, {tuple,Lr,[{atom,Lr,badrecord},{atom,Lr,Name}]})]}
+ ]},
+ St1}.
+
+record_upd_fs([{record_field,Lf,{atom,_La,F},_Val}|Fs], Us, St0) ->
+ {P,St1} = new_var(Lf, St0),
+ {Ps,News,St2} = record_upd_fs(Fs, Us, St1),
+ case find_field(F, Us) of
+ {ok,New} -> {[P|Ps],[New|News],St2};
+ error -> {[P|Ps],[P|News],St2}
+ end;
+record_upd_fs([], _, St) -> {[],[],St}.
+
+%% record_setel(Record, RecordName, [RecDefField], [Update])
+%% Build a nested chain of setelement calls to build the
+%% updated record tuple.
+
+record_setel(R, Name, Fs, Us0) ->
+ Us1 = foldl(fun ({record_field,Lf,Field,Val}, Acc) ->
+ I = index_expr(Lf, Field, Name, Fs),
+ [{I,Lf,Val}|Acc]
+ end, [], Us0),
+ Us = sort(Us1),
+ Lr = element(2, hd(Us)),
+ Wildcards = duplicate(length(Fs), {var,Lr,'_'}),
+ {'case',Lr,R,
+ [{clause,Lr,[{tuple,Lr,[{atom,Lr,Name}|Wildcards]}],[],
+ [foldr(fun ({I,Lf,Val}, Acc) ->
+ {call,Lf,{atom,Lf,setelement},[I,Acc,Val]} end,
+ R, Us)]},
+ {clause,Lr,[{var,Lr,'_'}],[],
+ [call_error(Lr, {tuple,Lr,[{atom,Lr,badrecord},{atom,Lr,Name}]})]}]}.
+
+%% Expand a call to record_info/2. We have checked that it is not
+%% shadowed by an import.
+
+record_info_call(Line, [{atom,_Li,Info},{atom,_Ln,Name}], St) ->
+ case Info of
+ size ->
+ {{integer,Line,1+length(record_fields(Name, St))},[],[],St};
+ fields ->
+ {make_list(field_names(record_fields(Name, St)), Line),
+ [],[],St}
+ end.
+
+%% Break out expressions from an record update list and bind to new
+%% variables. The idea is that we will evaluate all update expressions
+%% before starting to update the record.
+
+record_exprs(Us, St) ->
+ record_exprs(Us, St, [], []).
+
+record_exprs([{record_field,Lf,{atom,_La,_F}=Name,Val}=Field0|Us], St0, Pre, Fs) ->
+ case is_simple_val(Val) of
+ true ->
+ record_exprs(Us, St0, Pre, [Field0|Fs]);
+ false ->
+ {Var,St} = new_var(Lf, St0),
+ Bind = {match,Lf,Var,Val},
+ Field = {record_field,Lf,Name,Var},
+ record_exprs(Us, St, [Bind|Pre], [Field|Fs])
+ end;
+record_exprs([], St, Pre, Fs) ->
+ {reverse(Pre),Fs,St}.
+
+is_simple_val({var,_,_}) -> true;
+is_simple_val({atom,_,_}) -> true;
+is_simple_val({integer,_,_}) -> true;
+is_simple_val({float,_,_}) -> true;
+is_simple_val({nil,_}) -> true;
+is_simple_val(_) -> false.
+
+%% pattern_bin([Element], State) -> {[Element],[Variable],[UsedVar],State}.
+
+pattern_bin(Es0, St) ->
+ Es1 = bin_expand_strings(Es0),
+ foldr(fun (E, Acc) -> pattern_element(E, Acc) end, {[],[],[],St}, Es1).
+
+pattern_element({bin_element,Line,Expr,Size,Type}, {Es,Esvs,Esus,St0}) ->
+ {Expr1,Vs1,Us1,St1} = pattern(Expr, St0),
+ {Size1,Vs2,Us2,St2} = pat_bit_size(Size, St1),
+ {Size2,Type1} = make_bit_type(Line, Size1,Type),
+ {[{bin_element,Line,Expr1,Size2,Type1}|Es],
+ union([Vs1,Vs2,Esvs]),union([Us1,Us2,Esus]),St2}.
+
+pat_bit_size(default, St) -> {default,[],[],St};
+pat_bit_size({atom,_La,all}=All, St) -> {All,[],[],St};
+pat_bit_size({var,_Lv,V}=Var, St) -> {Var,[],[V],St};
+pat_bit_size(Size, St) ->
+ Line = element(2, Size),
+ {value,Sz,_} = erl_eval:expr(Size, erl_eval:new_bindings()),
+ {{integer,Line,Sz},[],[],St}.
+
+make_bit_type(Line, default, Type0) ->
+ case erl_bits:set_bit_type(default, Type0) of
+ {ok,all,Bt} -> {{atom,Line,all},erl_bits:as_list(Bt)};
+ {ok,Size,Bt} -> {{integer,Line,Size},erl_bits:as_list(Bt)}
+ end;
+make_bit_type(_Line, Size, Type0) -> %Integer or 'all'
+ {ok,Size,Bt} = erl_bits:set_bit_type(Size, Type0),
+ {Size,erl_bits:as_list(Bt)}.
+
+%% expr_bin([Element], [VisibleVar], State) ->
+%% {[Element],[NewVar],[UsedVar],State}.
+
+expr_bin(Es0, Vs, St) ->
+ Es1 = bin_expand_strings(Es0),
+ foldr(fun (E, Acc) -> bin_element(E, Vs, Acc) end, {[],[],[],St}, Es1).
+
+bin_element({bin_element,Line,Expr,Size,Type}, Vs, {Es,Esvs,Esus,St0}) ->
+ {Expr1,Vs1,Us1,St1} = expr(Expr, Vs, St0),
+ {Size1,Vs2,Us2,St2} = if Size == default -> {default,[],[],St1};
+ true -> expr(Size, Vs, St1)
+ end,
+ {Size2,Type1} = make_bit_type(Line, Size1, Type),
+ {[{bin_element,Line,Expr1,Size2,Type1}|Es],
+ union([Vs1,Vs2,Esvs]),union([Us1,Us2,Esus]),St2}.
+
+bin_expand_strings(Es) ->
+ foldr(fun ({bin_element,Line,{string,_,S},default,default}, Es1) ->
+ foldr(fun (C, Es2) ->
+ [{bin_element,Line,{char,Line,C},default,default}|Es2]
+ end, Es1, S);
+ (E, Es1) -> [E|Es1]
+ end, [], Es).
+
+%% new_var_name(State) -> {VarName,State}.
+
+new_var_name(St) ->
+ C = St#expand.vcount,
+ {list_to_atom("pre" ++ integer_to_list(C)),St#expand{vcount=C+1}}.
+
+%% new_var(Line, State) -> {Var,State}.
+
+new_var(L, St0) ->
+ {New,St1} = new_var_name(St0),
+ {{var,L,New},St1}.
+
+%% new_vars(Count, Line, State) -> {[Var],State}.
+%% Make Count new variables.
+
+new_vars(N, L, St) -> new_vars(N, L, St, []).
+
+new_vars(N, L, St0, Vs) when N > 0 ->
+ {V,St1} = new_var(L, St0),
+ new_vars(N-1, L, St1, [V|Vs]);
+new_vars(0, _L, St, Vs) -> {Vs,St}.
+
+%% make_list(TermList, Line) -> ConsTerm.
+
+make_list(Ts, Line) ->
+ foldr(fun (H, T) -> {cons,Line,H,T} end, {nil,Line}, Ts).
+
+string_to_conses(Line, Cs, Tail) ->
+ foldr(fun (C, T) -> {cons,Line,{char,Line,C},T} end, Tail, Cs).
+
+
+%% In syntax trees, module/package names are atoms or lists of atoms.
+
+package_to_string(A) when atom(A) -> atom_to_list(A);
+package_to_string(L) when list(L) -> packages:concat(L).
+
+expand_package({atom,L,A} = M, St) ->
+ case dict:find(A, St#expand.mod_imports) of
+ {ok, A1} ->
+ {atom,L,A1};
+ error ->
+ case packages:is_segmented(A) of
+ true ->
+ M;
+ false ->
+ M1 = packages:concat(St#expand.package, A),
+ {atom,L,list_to_atom(M1)}
+ end
+ end;
+expand_package(M, _St) ->
+ case erl_parse:package_segments(M) of
+ error ->
+ M;
+ M1 ->
+ {atom,element(2,M),list_to_atom(package_to_string(M1))}
+ end.
+
+%% Create a case-switch on true/false, generating badarg for all other
+%% values.
+
+make_bool_switch(L, E, V, T, F) ->
+ make_bool_switch_1(L, E, V, [T], [F]).
+
+make_bool_switch_1(L, E, V, T, F) ->
+ case get(sys_pre_expand_in_guard) of
+ undefined -> make_bool_switch_body(L, E, V, T, F);
+ yes -> make_bool_switch_guard(L, E, V, T, F)
+ end.
+
+make_bool_switch_guard(_, E, _, [{atom,_,true}], [{atom,_,false}]) -> E;
+make_bool_switch_guard(L, E, V, T, F) ->
+ NegL = -abs(L),
+ {'case',NegL,E,
+ [{clause,NegL,[{atom,NegL,true}],[],T},
+ {clause,NegL,[{atom,NegL,false}],[],F},
+ {clause,NegL,[V],[],[V]}
+ ]}.
+
+make_bool_switch_body(L, E, V, T, F) ->
+ NegL = -abs(L),
+ {'case',NegL,E,
+ [{clause,NegL,[{atom,NegL,true}],[],T},
+ {clause,NegL,[{atom,NegL,false}],[],F},
+ {clause,NegL,[V],[],
+ [call_error(NegL,{tuple,NegL,[{atom,NegL,badarg},V]})]}
+ ]}.
+
+%% Expand a list of cond-clauses to a sequence of case-switches.
+
+cond_clauses([{clause,L,[],[[E]],B}],V) ->
+ make_bool_switch_1(L,E,V,B,[call_error(L,{atom,L,cond_clause})]);
+cond_clauses([{clause,L,[],[[E]],B} | Cs],V) ->
+ make_bool_switch_1(L,E,V,B,[cond_clauses(Cs,V)]).
+
+%% call_error(Line, Reason) -> Expr.
+%% Build a call to erlang:error/1 with reason Reason.
+
+call_error(L, R) ->
+ {call,L,{remote,L,{atom,L,erlang},{atom,L,error}},[R]}.
+
+%% new_in_all(Before, RegionList) -> NewInAll
+%% Return the variables new in all clauses.
+
+new_in_all(Before, Region) ->
+ InAll = intersection(Region),
+ subtract(InAll, Before).
+
+%% import(Line, Imports, State) ->
+%% State'
+%% imported(Name, Arity, State) ->
+%% {yes,Module} | no
+%% Handle import declarations and est for imported functions. No need to
+%% check when building imports as code is correct.
+
+import({Mod0,Fs}, St) ->
+ Mod = list_to_atom(package_to_string(Mod0)),
+ Mfs = from_list(Fs),
+ St#expand{imports=add_imports(Mod, Mfs, St#expand.imports)};
+import(Mod0, St) ->
+ Mod = package_to_string(Mod0),
+ Key = list_to_atom(packages:last(Mod)),
+ St#expand{mod_imports=dict:store(Key, list_to_atom(Mod),
+ St#expand.mod_imports)}.
+
+add_imports(Mod, [F|Fs], Is) ->
+ add_imports(Mod, Fs, orddict:store(F, Mod, Is));
+add_imports(_, [], Is) -> Is.
+
+imported(F, A, St) ->
+ case orddict:find({F,A}, St#expand.imports) of
+ {ok,Mod} -> {yes,Mod};
+ error -> no
+ end.
diff --git a/lib/dialyzer/test/options1_tests_SUITE_data/src/compiler/v3_codegen.erl b/lib/dialyzer/test/options1_tests_SUITE_data/src/compiler/v3_codegen.erl
new file mode 100644
index 0000000000..2af4d94655
--- /dev/null
+++ b/lib/dialyzer/test/options1_tests_SUITE_data/src/compiler/v3_codegen.erl
@@ -0,0 +1,1755 @@
+%% ``The contents of this file are subject to the Erlang Public License,
+%% Version 1.1, (the "License"); you may not use this file except in
+%% compliance with the License. You should have received a copy of the
+%% Erlang Public License along with this software. If not, it can be
+%% retrieved via the world wide web at http://www.erlang.org/.
+%%
+%% Software distributed under the License is distributed on an "AS IS"
+%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
+%% the License for the specific language governing rights and limitations
+%% under the License.
+%%
+%% The Initial Developer of the Original Code is Ericsson Utvecklings AB.
+%% Portions created by Ericsson are Copyright 1999, Ericsson Utvecklings
+%% AB. All Rights Reserved.''
+%%
+%% $Id: v3_codegen.erl,v 1.1 2008/12/17 09:53:42 mikpe Exp $
+%%
+%% Purpose : Code generator for Beam.
+
+%% The following assumptions have been made:
+%%
+%% 1. Matches, i.e. things with {match,M,Ret} wrappers, only return
+%% values; no variables are exported. If the match would have returned
+%% extra variables then these have been transformed to multiple return
+%% values.
+%%
+%% 2. All BIF's called in guards are gc-safe so there is no need to
+%% put thing on the stack in the guard. While this would in principle
+%% work it would be difficult to keep track of the stack depth when
+%% trimming.
+%%
+%% The code generation uses variable lifetime information added by
+%% the v3_life module to save variables, allocate registers and
+%% move registers to the stack when necessary.
+%%
+%% We try to use a consistent variable name scheme throughout. The
+%% StackReg record is always called Bef,Int<n>,Aft.
+
+-module(v3_codegen).
+
+%% The main interface.
+-export([module/2]).
+
+-import(lists, [member/2,keymember/3,keysort/2,keysearch/3,append/1,
+ map/2,flatmap/2,foldl/3,foldr/3,mapfoldl/3,
+ sort/1,reverse/1,reverse/2]).
+-import(v3_life, [vdb_find/2]).
+
+%%-compile([export_all]).
+
+-include("v3_life.hrl").
+
+%% Main codegen structure.
+-record(cg, {lcount=1, %Label counter
+ mod, %Current module
+ func, %Current function
+ finfo, %Function info label
+ fcode, %Function code label
+ btype, %Type of bif used.
+ bfail, %Fail label of bif
+ break, %Break label
+ recv, %Receive label
+ is_top_block, %Boolean: top block or not
+ functable = [], %Table of local functions:
+ %[{{Name, Arity}, Label}...]
+ in_catch=false, %Inside a catch or not.
+ need_frame, %Need a stack frame.
+ new_funs=true}). %Generate new fun instructions.
+
+%% Stack/register state record.
+-record(sr, {reg=[], %Register table
+ stk=[], %Stack table
+ res=[]}). %Reserved regs: [{reserved,I,V}]
+
+module({Mod,Exp,Attr,Forms}, Options) ->
+ NewFunsFlag = not member(no_new_funs, Options),
+ {Fs,St} = functions(Forms, #cg{mod=Mod,new_funs=NewFunsFlag}),
+ {ok,{Mod,Exp,Attr,Fs,St#cg.lcount}}.
+
+functions(Forms, St0) ->
+ mapfoldl(fun (F, St) -> function(F, St) end, St0#cg{lcount=1}, Forms).
+
+function({function,Name,Arity,As0,Vb,Vdb}, St0) ->
+ %%ok = io:fwrite("cg ~w:~p~n", [?LINE,{Name,Arity}]),
+ St1 = St0#cg{func={Name,Arity}},
+ {Fun,St2} = cg_fun(Vb, As0, Vdb, St1),
+ Func0 = {function,Name,Arity,St2#cg.fcode,Fun},
+ Func = bs_function(Func0),
+ {Func,St2}.
+
+%% cg_fun([Lkexpr], [HeadVar], Vdb, State) -> {[Ainstr],State}
+
+cg_fun(Les, Hvs, Vdb, St0) ->
+ {Name,Arity} = St0#cg.func,
+ {Fi,St1} = new_label(St0), %FuncInfo label
+ {Fl,St2} = local_func_label(Name, Arity, St1),
+ %% Create initial stack/register state, clear unused arguments.
+ Bef = clear_dead(#sr{reg=foldl(fun ({var,V}, Reg) ->
+ put_reg(V, Reg)
+ end, [], Hvs),
+ stk=[]}, 0, Vdb),
+ {B2,_Aft,St3} = cg_list(Les, 0, Vdb, Bef, St2#cg{btype=exit,
+ bfail=Fi,
+ finfo=Fi,
+ fcode=Fl,
+ is_top_block=true}),
+ A = [{label,Fi},{func_info,{atom,St3#cg.mod},{atom,Name},Arity},
+ {label,Fl}|B2],
+ {A,St3}.
+
+%% cg(Lkexpr, Vdb, StackReg, State) -> {[Ainstr],StackReg,State}.
+%% Generate code for a kexpr.
+%% Split function into two steps for clarity, not efficiency.
+
+cg(Le, Vdb, Bef, St) ->
+ cg(Le#l.ke, Le, Vdb, Bef, St).
+
+cg({block,Es}, Le, Vdb, Bef, St) ->
+ block_cg(Es, Le, Vdb, Bef, St);
+cg({match,M,Rs}, Le, Vdb, Bef, St) ->
+ match_cg(M, Rs, Le, Vdb, Bef, St);
+cg({match_fail,F}, Le, Vdb, Bef, St) ->
+ match_fail_cg(F, Le, Vdb, Bef, St);
+cg({call,Func,As,Rs}, Le, Vdb, Bef, St) ->
+ call_cg(Func, As, Rs, Le, Vdb, Bef, St);
+cg({enter,Func,As}, Le, Vdb, Bef, St) ->
+ enter_cg(Func, As, Le, Vdb, Bef, St);
+cg({bif,Bif,As,Rs}, Le, Vdb, Bef, St) ->
+ bif_cg(Bif, As, Rs, Le, Vdb, Bef, St);
+cg({receive_loop,Te,Rvar,Rm,Tes,Rs}, Le, Vdb, Bef, St) ->
+ recv_loop_cg(Te, Rvar, Rm, Tes, Rs, Le, Vdb, Bef, St);
+cg(receive_next, Le, Vdb, Bef, St) ->
+ recv_next_cg(Le, Vdb, Bef, St);
+cg(receive_accept, _Le, _Vdb, Bef, St) -> {[remove_message],Bef,St};
+cg({'try',Ta,Vs,Tb,Evs,Th,Rs}, Le, Vdb, Bef, St) ->
+ try_cg(Ta, Vs, Tb, Evs, Th, Rs, Le, Vdb, Bef, St);
+cg({'catch',Cb,R}, Le, Vdb, Bef, St) ->
+ catch_cg(Cb, R, Le, Vdb, Bef, St);
+cg({set,Var,Con}, Le, Vdb, Bef, St) -> set_cg(Var, Con, Le, Vdb, Bef, St);
+cg({return,Rs}, Le, Vdb, Bef, St) -> return_cg(Rs, Le, Vdb, Bef, St);
+cg({break,Bs}, Le, Vdb, Bef, St) -> break_cg(Bs, Le, Vdb, Bef, St);
+cg({need_heap,0}, _Le, _Vdb, Bef, St) ->
+ {[],Bef,St};
+cg({need_heap,H}, _Le, _Vdb, Bef, St) ->
+ {[{test_heap,H,max_reg(Bef#sr.reg)}],Bef,St}.
+
+%% cg_list([Kexpr], FirstI, Vdb, StackReg, St) -> {[Ainstr],StackReg,St}.
+
+cg_list(Kes, I, Vdb, Bef, St0) ->
+ {Keis,{Aft,St1}} =
+ flatmapfoldl(fun (Ke, {Inta,Sta}) ->
+% ok = io:fwrite(" %% ~p\n", [Inta]),
+% ok = io:fwrite("cgl:~p\n", [Ke]),
+ {Keis,Intb,Stb} = cg(Ke, Vdb, Inta, Sta),
+% ok = io:fwrite(" ~p\n", [Keis]),
+% ok = io:fwrite(" %% ~p\n", [Intb]),
+ {comment(Inta) ++ Keis,{Intb,Stb}}
+ end, {Bef,St0}, need_heap(Kes, I)),
+ {Keis,Aft,St1}.
+
+%% need_heap([Lkexpr], I, BifType) -> [Lkexpr].
+%% Insert need_heap instructions in Kexpr list. Try to be smart and
+%% collect them together as much as possible.
+
+need_heap(Kes0, I) ->
+ {Kes1,{H,F}} = flatmapfoldr(fun (Ke, {H0,F0}) ->
+ {Ns,H1,F1} = need_heap_1(Ke, H0, F0),
+ {[Ke|Ns],{H1,F1}}
+ end, {0,false}, Kes0),
+ %% Prepend need_heap if necessary.
+ Kes2 = need_heap_need(I, H, F) ++ Kes1,
+% ok = io:fwrite("need_heap: ~p~n",
+% [{{H,F},
+% map(fun (#l{ke={match,M,Rs}}) -> match;
+% (Lke) -> Lke#l.ke end, Kes2)}]),
+ Kes2.
+
+need_heap_1(#l{ke={set,_,{binary,_}},i=I}, H, F) ->
+ {need_heap_need(I, H, F),0,false};
+need_heap_1(#l{ke={set,_,Val}}, H, F) ->
+ %% Just pass through adding to needed heap.
+ {[],H + case Val of
+ {cons,_} -> 2;
+ {tuple,Es} -> 1 + length(Es);
+ {string,S} -> 2 * length(S);
+ _Other -> 0
+ end,F};
+need_heap_1(#l{ke={call,_Func,_As,_Rs},i=I}, H, F) ->
+ %% Calls generate a need if necessary and also force one.
+ {need_heap_need(I, H, F),0,true};
+need_heap_1(#l{ke={bif,dsetelement,_As,_Rs},i=I}, H, F) ->
+ {need_heap_need(I, H, F),0,true};
+need_heap_1(#l{ke={bif,{make_fun,_,_,_,_},_As,_Rs},i=I}, H, F) ->
+ {need_heap_need(I, H, F),0,true};
+need_heap_1(#l{ke={bif,_Bif,_As,_Rs}}, H, F) ->
+ {[],H,F};
+need_heap_1(#l{i=I}, H, F) ->
+ %% Others kexprs generate a need if necessary but don't force.
+ {need_heap_need(I, H, F),0,false}.
+
+need_heap_need(_I, 0, false) -> [];
+need_heap_need(I, H, _F) -> [#l{ke={need_heap,H},i=I}].
+
+
+%% match_cg(Match, [Ret], Le, Vdb, StackReg, State) ->
+%% {[Ainstr],StackReg,State}.
+%% Generate code for a match. First save all variables on the stack
+%% that are to survive after the match. We leave saved variables in
+%% their registers as they might actually be in the right place.
+%% Should test this.
+
+match_cg(M, Rs, Le, Vdb, Bef, St0) ->
+ I = Le#l.i,
+ {Sis,Int0} = adjust_stack(Bef, I, I+1, Vdb),
+ {B,St1} = new_label(St0),
+ {Mis,Int1,St2} = match_cg(M, none, Int0, St1#cg{break=B}),
+ %% Put return values in registers.
+ Reg = load_vars(Rs, Int1#sr.reg),
+ {Sis ++ Mis ++ [{label,B}],
+ clear_dead(Int1#sr{reg=Reg}, I, Vdb),
+ St2#cg{break=St1#cg.break}}.
+
+%% match_cg(Match, Fail, StackReg, State) -> {[Ainstr],StackReg,State}.
+%% Generate code for a match tree. N.B. there is no need pass Vdb
+%% down as each level which uses this takes its own internal Vdb not
+%% the outer one.
+
+match_cg(Le, Fail, Bef, St) ->
+ match_cg(Le#l.ke, Le, Fail, Bef, St).
+
+match_cg({alt,F,S}, _Le, Fail, Bef, St0) ->
+ {Tf,St1} = new_label(St0),
+ {Fis,Faft,St2} = match_cg(F, Tf, Bef, St1),
+ {Sis,Saft,St3} = match_cg(S, Fail, Bef, St2),
+ Aft = sr_merge(Faft, Saft),
+ {Fis ++ [{label,Tf}] ++ Sis,Aft,St3};
+match_cg({select,V,Scs}, _Va, Fail, Bef, St) ->
+ match_fmf(fun (S, F, Sta) ->
+ select_cg(S, V, F, Fail, Bef, Sta) end,
+ Fail, St, Scs);
+match_cg({guard,Gcs}, _Le, Fail, Bef, St) ->
+ match_fmf(fun (G, F, Sta) -> guard_clause_cg(G, F, Bef, Sta) end,
+ Fail, St, Gcs);
+match_cg({block,Es}, Le, _Fail, Bef, St) ->
+ %% Must clear registers and stack of dead variables.
+ Int = clear_dead(Bef, Le#l.i, Le#l.vdb),
+ block_cg(Es, Le, Int, St).
+
+%% match_fail_cg(FailReason, Le, Vdb, StackReg, State) ->
+%% {[Ainstr],StackReg,State}.
+%% Generate code for the match_fail "call". N.B. there is no generic
+%% case for when the fail value has been created elsewhere.
+
+match_fail_cg({function_clause,As}, Le, Vdb, Bef, St) ->
+ %% Must have the args in {x,0}, {x,1},...
+ {Sis,Int} = cg_setup_call(As, Bef, Le#l.i, Vdb),
+ {Sis ++ [{jump,{f,St#cg.finfo}}],
+ Int#sr{reg=clear_regs(Int#sr.reg)},St};
+match_fail_cg({badmatch,Term}, Le, Vdb, Bef, St) ->
+ R = cg_reg_arg(Term, Bef),
+ Int0 = clear_dead(Bef, Le#l.i, Vdb),
+ {Sis,Int} = adjust_stack(Int0, Le#l.i, Le#l.i+1, Vdb),
+ {Sis ++ [{badmatch,R}],
+ Int#sr{reg=clear_regs(Int0#sr.reg)},St};
+match_fail_cg({case_clause,Reason}, Le, Vdb, Bef, St) ->
+ R = cg_reg_arg(Reason, Bef),
+ Int0 = clear_dead(Bef, Le#l.i, Vdb),
+ {Sis,Int} = adjust_stack(Int0, Le#l.i, Le#l.i+1, Vdb),
+ {Sis++[{case_end,R}],
+ Int#sr{reg=clear_regs(Bef#sr.reg)},St};
+match_fail_cg(if_clause, Le, Vdb, Bef, St) ->
+ Int0 = clear_dead(Bef, Le#l.i, Vdb),
+ {Sis,Int1} = adjust_stack(Int0, Le#l.i, Le#l.i+1, Vdb),
+ {Sis++[if_end],Int1#sr{reg=clear_regs(Int1#sr.reg)},St};
+match_fail_cg({try_clause,Reason}, Le, Vdb, Bef, St) ->
+ R = cg_reg_arg(Reason, Bef),
+ Int0 = clear_dead(Bef, Le#l.i, Vdb),
+ {Sis,Int} = adjust_stack(Int0, Le#l.i, Le#l.i+1, Vdb),
+ {Sis ++ [{try_case_end,R}],
+ Int#sr{reg=clear_regs(Int0#sr.reg)},St}.
+
+
+%% block_cg([Kexpr], Le, Vdb, StackReg, St) -> {[Ainstr],StackReg,St}.
+%% block_cg([Kexpr], Le, StackReg, St) -> {[Ainstr],StackReg,St}.
+
+block_cg(Es, Le, _Vdb, Bef, St) ->
+ block_cg(Es, Le, Bef, St).
+
+block_cg(Es, Le, Bef, St0) ->
+ case St0#cg.is_top_block of
+ false ->
+ cg_block(Es, Le#l.i, Le#l.vdb, Bef, St0);
+ true ->
+ {Keis,Aft,St1} = cg_block(Es, Le#l.i, Le#l.vdb, Bef,
+ St0#cg{is_top_block=false,
+ need_frame=false}),
+ top_level_block(Keis, Aft, max_reg(Bef#sr.reg), St1)
+ end.
+
+cg_block([], _I, _Vdb, Bef, St0) ->
+ {[],Bef,St0};
+cg_block(Kes0, I, Vdb, Bef, St0) ->
+ {Kes2,Int1,St1} =
+ case basic_block(Kes0) of
+ {Kes1,LastI,Args,Rest} ->
+ Ke = hd(Kes1),
+ Fb = Ke#l.i,
+ cg_basic_block(Kes1, Fb, LastI, Args, Vdb, Bef, St0);
+ {Kes1,Rest} ->
+ cg_list(Kes1, I, Vdb, Bef, St0)
+ end,
+ {Kes3,Int2,St2} = cg_block(Rest, I, Vdb, Int1, St1),
+ {Kes2 ++ Kes3,Int2,St2}.
+
+basic_block(Kes) -> basic_block(Kes, []).
+
+basic_block([], Acc) -> {reverse(Acc),[]};
+basic_block([Le|Les], Acc) ->
+ case collect_block(Le#l.ke) of
+ include -> basic_block(Les, [Le|Acc]);
+ {block_end,As} -> {reverse(Acc, [Le]),Le#l.i,As,Les};
+ no_block -> {reverse(Acc, [Le]),Les}
+ end.
+
+collect_block({set,_,{binary,_}}) -> no_block;
+collect_block({set,_,_}) -> include;
+collect_block({call,{var,_}=Var,As,_Rs}) -> {block_end,As++[Var]};
+collect_block({call,Func,As,_Rs}) -> {block_end,As++func_vars(Func)};
+collect_block({enter,{var,_}=Var,As})-> {block_end,As++[Var]};
+collect_block({enter,Func,As}) -> {block_end,As++func_vars(Func)};
+collect_block({return,Rs}) -> {block_end,Rs};
+collect_block({break,Bs}) -> {block_end,Bs};
+collect_block({bif,_Bif,_As,_Rs}) -> include;
+collect_block(_) -> no_block.
+
+func_vars({remote,M,F}) when element(1, M) == var;
+ element(1, F) == var ->
+ [M,F];
+func_vars(_) -> [].
+
+%% cg_basic_block([Kexpr], FirstI, LastI, As, Vdb, StackReg, State) ->
+%% {[Ainstr],StackReg,State}.
+
+cg_basic_block(Kes, Fb, Lf, As, Vdb, Bef, St0) ->
+ Res = make_reservation(As, 0),
+ Regs0 = reserve(Res, Bef#sr.reg, Bef#sr.stk),
+ Stk = extend_stack(Bef, Lf, Lf+1, Vdb),
+ Int0 = Bef#sr{reg=Regs0,stk=Stk,res=Res},
+ X0_v0 = x0_vars(As, Fb, Lf, Vdb),
+ {Keis,{Aft,_,St1}} =
+ flatmapfoldl(fun(Ke, St) -> cg_basic_block(Ke, St, Lf, Vdb) end,
+ {Int0,X0_v0,St0}, need_heap(Kes, Fb)),
+ {Keis,Aft,St1}.
+
+cg_basic_block(Ke, {Inta,X0v,Sta}, _Lf, Vdb) when element(1, Ke#l.ke) =:= need_heap ->
+ {Keis,Intb,Stb} = cg(Ke, Vdb, Inta, Sta),
+ {comment(Inta) ++ Keis, {Intb,X0v,Stb}};
+cg_basic_block(Ke, {Inta,X0_v1,Sta}, Lf, Vdb) ->
+ {Sis,Intb} = save_carefully(Inta, Ke#l.i, Lf+1, Vdb),
+ {X0_v2,Intc} = allocate_x0(X0_v1, Ke#l.i, Intb),
+ Intd = reserve(Intc),
+ {Keis,Inte,Stb} = cg(Ke, Vdb, Intd, Sta),
+ {comment(Inta) ++ Sis ++ Keis, {Inte,X0_v2,Stb}}.
+
+make_reservation([], _) -> [];
+make_reservation([{var,V}|As], I) -> [{I,V}|make_reservation(As, I+1)];
+make_reservation([A|As], I) -> [{I,A}|make_reservation(As, I+1)].
+
+reserve(Sr) -> Sr#sr{reg=reserve(Sr#sr.res, Sr#sr.reg, Sr#sr.stk)}.
+
+reserve([{I,V}|Rs], [free|Regs], Stk) -> [{reserved,I,V}|reserve(Rs, Regs, Stk)];
+reserve([{I,V}|Rs], [{I,V}|Regs], Stk) -> [{I,V}|reserve(Rs, Regs, Stk)];
+reserve([{I,V}|Rs], [{I,Var}|Regs], Stk) ->
+ case on_stack(Var, Stk) of
+ true -> [{reserved,I,V}|reserve(Rs, Regs, Stk)];
+ false -> [{I,Var}|reserve(Rs, Regs, Stk)]
+ end;
+reserve([{I,V}|Rs], [{reserved,I,_}|Regs], Stk) ->
+ [{reserved,I,V}|reserve(Rs, Regs, Stk)];
+%reserve([{I,V}|Rs], [Other|Regs], Stk) -> [Other|reserve(Rs, Regs, Stk)];
+reserve([{I,V}|Rs], [], Stk) -> [{reserved,I,V}|reserve(Rs, [], Stk)];
+reserve([], Regs, _) -> Regs.
+
+extend_stack(Bef, Fb, Lf, Vdb) ->
+ Stk0 = clear_dead_stk(Bef#sr.stk, Fb, Vdb),
+ Saves = [V || {V,F,L} <- Vdb,
+ F < Fb,
+ L >= Lf,
+ not on_stack(V, Stk0)],
+ Stk1 = foldl(fun (V, Stk) -> put_stack(V, Stk) end, Stk0, Saves),
+ Bef#sr.stk ++ lists:duplicate(length(Stk1) - length(Bef#sr.stk), free).
+
+save_carefully(Bef, Fb, Lf, Vdb) ->
+ Stk = Bef#sr.stk,
+ %% New variables that are in use but not on stack.
+ New = [ {V,F,L} || {V,F,L} <- Vdb,
+ F < Fb,
+ L >= Lf,
+ not on_stack(V, Stk) ],
+ Saves = [ V || {V,_,_} <- keysort(2, New) ],
+ save_carefully(Saves, Bef, []).
+
+save_carefully([], Bef, Acc) -> {reverse(Acc),Bef};
+save_carefully([V|Vs], Bef, Acc) ->
+ case put_stack_carefully(V, Bef#sr.stk) of
+ error -> {reverse(Acc),Bef};
+ Stk1 ->
+ SrcReg = fetch_reg(V, Bef#sr.reg),
+ Move = {move,SrcReg,fetch_stack(V, Stk1)},
+ {x,_} = SrcReg, %Assertion - must be X register.
+ save_carefully(Vs, Bef#sr{stk=Stk1}, [Move|Acc])
+ end.
+
+x0_vars([], _Fb, _Lf, _Vdb) -> [];
+x0_vars([{var,V}|_], Fb, _Lf, Vdb) ->
+ {V,F,_L} = VFL = vdb_find(V, Vdb),
+ x0_vars1([VFL], Fb, F, Vdb);
+x0_vars([X0|_], Fb, Lf, Vdb) ->
+ x0_vars1([{X0,Lf,Lf}], Fb, Lf, Vdb).
+
+x0_vars1(X0, Fb, Xf, Vdb) ->
+ Vs0 = [VFL || {_V,F,L}=VFL <- Vdb,
+ F >= Fb,
+ L < Xf],
+ Vs1 = keysort(3, Vs0),
+ keysort(2, X0++Vs1).
+
+allocate_x0([], _, Bef) -> {[],Bef#sr{res=[]}};
+allocate_x0([{_,_,L}|Vs], I, Bef) when L =< I ->
+ allocate_x0(Vs, I, Bef);
+allocate_x0([{V,_F,_L}=VFL|Vs], _, Bef) ->
+ {[VFL|Vs],Bef#sr{res=reserve_x0(V, Bef#sr.res)}}.
+
+reserve_x0(V, [_|Res]) -> [{0,V}|Res];
+reserve_x0(V, []) -> [{0,V}].
+
+top_level_block(Keis, Bef, _MaxRegs, St0) when St0#cg.need_frame =:= false,
+ length(Bef#sr.stk) =:= 0 ->
+ %% This block need no stack frame. However, we still need to turn the
+ %% stack frame upside down.
+ MaxY = length(Bef#sr.stk)-1,
+ Keis1 = flatmap(fun (Tuple) when tuple(Tuple) ->
+ [turn_yregs(size(Tuple), Tuple, MaxY)];
+ (Other) ->
+ [Other]
+ end, Keis),
+ {Keis1, Bef, St0#cg{is_top_block=true}};
+top_level_block(Keis, Bef, MaxRegs, St0) ->
+ %% This top block needs an allocate instruction before it, and a
+ %% deallocate instruction before each return.
+ FrameSz = length(Bef#sr.stk),
+ MaxY = FrameSz-1,
+ Keis1 = flatmap(fun ({call_only,Arity,Func}) ->
+ [{call_last,Arity,Func,FrameSz}];
+ ({call_ext_only,Arity,Func}) ->
+ [{call_ext_last,Arity,Func,FrameSz}];
+ ({apply_only,Arity}) ->
+ [{apply_last,Arity,FrameSz}];
+ (return) ->
+ [{deallocate,FrameSz}, return];
+ (Tuple) when tuple(Tuple) ->
+ [turn_yregs(size(Tuple), Tuple, MaxY)];
+ (Other) ->
+ [Other]
+ end, Keis),
+ {[{allocate_zero,FrameSz,MaxRegs}|Keis1], Bef, St0#cg{is_top_block=true}}.
+
+%% turn_yregs(Size, Tuple, MaxY) -> Tuple'
+%% Renumber y register so that {y, 0} becomes {y, FrameSize-1},
+%% {y, FrameSize-1} becomes {y, 0} and so on. This is to make nested
+%% catches work. The code generation algorithm gives a lower register
+%% number to the outer catch, which is wrong.
+
+turn_yregs(0, Tp, _) -> Tp;
+turn_yregs(El, Tp, MaxY) when element(1, element(El, Tp)) == yy ->
+ turn_yregs(El-1, setelement(El, Tp, {y,MaxY-element(2, element(El, Tp))}), MaxY);
+turn_yregs(El, Tp, MaxY) when list(element(El, Tp)) ->
+ New = map(fun ({yy,YY}) -> {y,MaxY-YY};
+ (Other) -> Other end, element(El, Tp)),
+ turn_yregs(El-1, setelement(El, Tp, New), MaxY);
+turn_yregs(El, Tp, MaxY) ->
+ turn_yregs(El-1, Tp, MaxY).
+
+%% select_cg(Sclause, V, TypeFail, ValueFail, StackReg, State) ->
+%% {Is,StackReg,State}.
+%% Selecting type and value needs two failure labels, TypeFail is the
+%% label to jump to of the next type test when this type fails, and
+%% ValueFail is the label when this type is correct but the value is
+%% wrong. These are different as in the second case there is no need
+%% to try the next type, it will always fail.
+
+select_cg(#l{ke={type_clause,cons,[S]}}, {var,V}, Tf, Vf, Bef, St) ->
+ select_cons(S, V, Tf, Vf, Bef, St);
+select_cg(#l{ke={type_clause,nil,[S]}}, {var,V}, Tf, Vf, Bef, St) ->
+ select_nil(S, V, Tf, Vf, Bef, St);
+select_cg(#l{ke={type_clause,binary,[S]}}, {var,V}, Tf, Vf, Bef, St) ->
+ select_binary(S, V, Tf, Vf, Bef, St);
+select_cg(#l{ke={type_clause,bin_seg,S}}, {var,V}, Tf, Vf, Bef, St) ->
+ select_bin_segs(S, V, Tf, Vf, Bef, St);
+select_cg(#l{ke={type_clause,bin_end,[S]}}, {var,V}, Tf, Vf, Bef, St) ->
+ select_bin_end(S, V, Tf, Vf, Bef, St);
+select_cg(#l{ke={type_clause,Type,Scs}}, {var,V}, Tf, Vf, Bef, St0) ->
+ {Vis,{Aft,St1}} =
+ mapfoldl(fun (S, {Int,Sta}) ->
+ {Val,Is,Inta,Stb} = select_val(S, V, Vf, Bef, Sta),
+ {{Is,[Val]},{sr_merge(Int, Inta),Stb}}
+ end, {void,St0}, Scs),
+ OptVls = combine(lists:sort(combine(Vis))),
+ {Vls,Sis,St2} = select_labels(OptVls, St1, [], []),
+ {select_val_cg(Type, fetch_var(V, Bef), Vls, Tf, Vf, Sis), Aft, St2}.
+
+select_val_cg(tuple, R, [Arity,{f,Lbl}], Tf, Vf, [{label,Lbl}|Sis]) ->
+ [{test,is_tuple,{f,Tf},[R]},{test,test_arity,{f,Vf},[R,Arity]}|Sis];
+select_val_cg(tuple, R, Vls, Tf, Vf, Sis) ->
+ [{test,is_tuple,{f,Tf},[R]},{select_tuple_arity,R,{f,Vf},{list,Vls}}|Sis];
+select_val_cg(Type, R, [Val, {f,Lbl}], Fail, Fail, [{label,Lbl}|Sis]) ->
+ [{test,is_eq_exact,{f,Fail},[R,{Type,Val}]}|Sis];
+select_val_cg(Type, R, [Val, {f,Lbl}], Tf, Vf, [{label,Lbl}|Sis]) ->
+ [{test,select_type_test(Type),{f,Tf},[R]},
+ {test,is_eq_exact,{f,Vf},[R,{Type,Val}]}|Sis];
+select_val_cg(Type, R, Vls0, Tf, Vf, Sis) ->
+ Vls1 = map(fun ({f,Lbl}) -> {f,Lbl};
+ (Value) -> {Type,Value}
+ end, Vls0),
+ [{test,select_type_test(Type),{f,Tf},[R]}, {select_val,R,{f,Vf},{list,Vls1}}|Sis].
+
+select_type_test(tuple) -> is_tuple;
+select_type_test(integer) -> is_integer;
+select_type_test(atom) -> is_atom;
+select_type_test(float) -> is_float.
+
+combine([{Is,Vs1}, {Is,Vs2}|Vis]) -> combine([{Is,Vs1 ++ Vs2}|Vis]);
+combine([V|Vis]) -> [V|combine(Vis)];
+combine([]) -> [].
+
+select_labels([{Is,Vs}|Vis], St0, Vls, Sis) ->
+ {Lbl,St1} = new_label(St0),
+ select_labels(Vis, St1, add_vls(Vs, Lbl, Vls), [[{label,Lbl}|Is]|Sis]);
+select_labels([], St, Vls, Sis) ->
+ {Vls,append(Sis),St}.
+
+add_vls([V|Vs], Lbl, Acc) ->
+ add_vls(Vs, Lbl, [V, {f,Lbl}|Acc]);
+add_vls([], _, Acc) -> Acc.
+
+select_cons(#l{ke={val_clause,{cons,Es},B},i=I,vdb=Vdb}, V, Tf, Vf, Bef, St0) ->
+ {Eis,Int,St1} = select_extract_cons(V, Es, I, Vdb, Bef, St0),
+ {Bis,Aft,St2} = match_cg(B, Vf, Int, St1),
+ {[{test,is_nonempty_list,{f,Tf},[fetch_var(V, Bef)]}] ++ Eis ++ Bis,Aft,St2}.
+
+select_nil(#l{ke={val_clause,nil,B}}, V, Tf, Vf, Bef, St0) ->
+ {Bis,Aft,St1} = match_cg(B, Vf, Bef, St0),
+ {[{test,is_nil,{f,Tf},[fetch_var(V, Bef)]}] ++ Bis,Aft,St1}.
+
+select_binary(#l{ke={val_clause,{old_binary,Var},B}}=L,
+ V, Tf, Vf, Bef, St) ->
+ %% Currently handled in the same way as new binaries.
+ select_binary(L#l{ke={val_clause,{binary,Var},B}}, V, Tf, Vf, Bef, St);
+select_binary(#l{ke={val_clause,{binary,{var,Ivar}},B},i=I,vdb=Vdb},
+ V, Tf, Vf, Bef, St0) ->
+ Int0 = clear_dead(Bef, I, Vdb),
+ {Bis,Aft,St1} = match_cg(B, Vf, Int0, St0),
+ {[{test,bs_start_match,{f,Tf},[fetch_var(V, Bef)]},{bs_save,Ivar}|Bis],
+ Aft,St1}.
+
+select_bin_segs(Scs, Ivar, Tf, _Vf, Bef, St) ->
+ match_fmf(fun(S, Fail, Sta) ->
+ select_bin_seg(S, Ivar, Fail, Bef, Sta) end,
+ Tf, St, Scs).
+
+select_bin_seg(#l{ke={val_clause,{bin_seg,Size,U,T,Fs,Es},B},i=I,vdb=Vdb},
+ Ivar, Fail, Bef, St0) ->
+ {Mis,Int,St1} = select_extract_bin(Es, Size, U, T, Fs, Fail,
+ I, Vdb, Bef, St0),
+ {Bis,Aft,St2} = match_cg(B, Fail, Int, St1),
+ {[{bs_restore,Ivar}|Mis] ++ Bis,Aft,St2}.
+
+select_extract_bin([{var,Hd},{var,Tl}], Size0, Unit, Type, Flags, Vf,
+ I, Vdb, Bef, St) ->
+ SizeReg = get_bin_size_reg(Size0, Bef),
+ {Es,Aft} =
+ case vdb_find(Hd, Vdb) of
+ {_,_,Lhd} when Lhd =< I ->
+ {[{test,bs_skip_bits,{f,Vf},[SizeReg,Unit,{field_flags,Flags}]},
+ {bs_save,Tl}],Bef};
+ {_,_,_} ->
+ Reg0 = put_reg(Hd, Bef#sr.reg),
+ Int1 = Bef#sr{reg=Reg0},
+ Rhd = fetch_reg(Hd, Reg0),
+ Name = get_bits_instr(Type),
+ {[{test,Name,{f,Vf},[SizeReg,Unit,{field_flags,Flags},Rhd]},
+ {bs_save,Tl}],Int1}
+ end,
+ {Es,clear_dead(Aft, I, Vdb),St}.
+
+get_bin_size_reg({var,V}, Bef) ->
+ fetch_var(V, Bef);
+get_bin_size_reg(Literal, _Bef) ->
+ Literal.
+
+select_bin_end(#l{ke={val_clause,bin_end,B}},
+ Ivar, Tf, Vf, Bef, St0) ->
+ {Bis,Aft,St2} = match_cg(B, Vf, Bef, St0),
+ {[{bs_restore,Ivar},{test,bs_test_tail,{f,Tf},[0]}|Bis],Aft,St2}.
+
+get_bits_instr(integer) -> bs_get_integer;
+get_bits_instr(float) -> bs_get_float;
+get_bits_instr(binary) -> bs_get_binary.
+
+select_val(#l{ke={val_clause,{tuple,Es},B},i=I,vdb=Vdb}, V, Vf, Bef, St0) ->
+ {Eis,Int,St1} = select_extract_tuple(V, Es, I, Vdb, Bef, St0),
+ {Bis,Aft,St2} = match_cg(B, Vf, Int, St1),
+ {length(Es),Eis ++ Bis,Aft,St2};
+select_val(#l{ke={val_clause,{_,Val},B}}, _V, Vf, Bef, St0) ->
+ {Bis,Aft,St1} = match_cg(B, Vf, Bef, St0),
+ {Val,Bis,Aft,St1}.
+
+%% select_extract_tuple(Src, [V], I, Vdb, StackReg, State) ->
+%% {[E],StackReg,State}.
+%% Extract tuple elements, but only if they do not immediately die.
+
+select_extract_tuple(Src, Vs, I, Vdb, Bef, St) ->
+ F = fun ({var,V}, {Int0,Elem}) ->
+ case vdb_find(V, Vdb) of
+ {V,_,L} when L =< I -> {[], {Int0,Elem+1}};
+ _Other ->
+ Reg1 = put_reg(V, Int0#sr.reg),
+ Int1 = Int0#sr{reg=Reg1},
+ Rsrc = fetch_var(Src, Int1),
+ {[{get_tuple_element,Rsrc,Elem,fetch_reg(V, Reg1)}],
+ {Int1,Elem+1}}
+ end
+ end,
+ {Es,{Aft,_}} = flatmapfoldl(F, {Bef,0}, Vs),
+ {Es,Aft,St}.
+
+select_extract_cons(Src, [{var,Hd}, {var,Tl}], I, Vdb, Bef, St) ->
+ {Es,Aft} = case {vdb_find(Hd, Vdb), vdb_find(Tl, Vdb)} of
+ {{_,_,Lhd}, {_,_,Ltl}} when Lhd =< I, Ltl =< I ->
+ %% Both head and tail are dead. No need to generate
+ %% any instruction.
+ {[], Bef};
+ _ ->
+ %% At least one of head and tail will be used,
+ %% but we must always fetch both. We will call
+ %% clear_dead/2 to allow reuse of the register
+ %% in case only of them is used.
+
+ Reg0 = put_reg(Tl, put_reg(Hd, Bef#sr.reg)),
+ Int0 = Bef#sr{reg=Reg0},
+ Rsrc = fetch_var(Src, Int0),
+ Rhd = fetch_reg(Hd, Reg0),
+ Rtl = fetch_reg(Tl, Reg0),
+ Int1 = clear_dead(Int0, I, Vdb),
+ {[{get_list,Rsrc,Rhd,Rtl}], Int1}
+ end,
+ {Es,Aft,St}.
+
+
+guard_clause_cg(#l{ke={guard_clause,G,B},vdb=Vdb}, Fail, Bef, St0) ->
+ {Gis,Int,St1} = guard_cg(G, Fail, Vdb, Bef, St0),
+ {Bis,Aft,St2} = match_cg(B, Fail, Int, St1),
+ {Gis ++ Bis,Aft,St2}.
+
+%% guard_cg(Guard, Fail, Vdb, StackReg, State) ->
+%% {[Ainstr],StackReg,State}.
+%% A guard is a boolean expression of tests. Tests return true or
+%% false. A fault in a test causes the test to return false. Tests
+%% never return the boolean, instead we generate jump code to go to
+%% the correct exit point. Primops and tests all go to the next
+%% instruction on success or jump to a failure label.
+
+guard_cg(#l{ke={protected,Ts,Rs},i=I,vdb=Pdb}, Fail, _Vdb, Bef, St) ->
+ protected_cg(Ts, Rs, Fail, I, Pdb, Bef, St);
+guard_cg(#l{ke={block,Ts},i=I,vdb=Bdb}, Fail, _Vdb, Bef, St) ->
+ guard_cg_list(Ts, Fail, I, Bdb, Bef, St);
+guard_cg(#l{ke={test,Test,As},i=I,vdb=_Tdb}, Fail, Vdb, Bef, St) ->
+ test_cg(Test, As, Fail, I, Vdb, Bef, St);
+guard_cg(G, _Fail, Vdb, Bef, St) ->
+ %%ok = io:fwrite("cg ~w: ~p~n", [?LINE,{G,Fail,Vdb,Bef}]),
+ {Gis,Aft,St1} = cg(G, Vdb, Bef, St),
+ %%ok = io:fwrite("cg ~w: ~p~n", [?LINE,{Aft}]),
+ {Gis,Aft,St1}.
+
+%% protected_cg([Kexpr], [Ret], Fail, I, Vdb, Bef, St) -> {[Ainstr],Aft,St}.
+%% Do a protected. Protecteds without return values are just done
+%% for effect, the return value is not checked, success passes on to
+%% the next instruction and failure jumps to Fail. If there are
+%% return values then these must be set to 'false' on failure,
+%% control always passes to the next instruction.
+
+protected_cg(Ts, [], Fail, I, Vdb, Bef, St0) ->
+ %% Protect these calls, revert when done.
+ {Tis,Aft,St1} = guard_cg_list(Ts, Fail, I, Vdb, Bef,
+ St0#cg{btype=fail,bfail=Fail}),
+ {Tis,Aft,St1#cg{btype=St0#cg.btype,bfail=St0#cg.bfail}};
+protected_cg(Ts, Rs, _Fail, I, Vdb, Bef, St0) ->
+ {Pfail,St1} = new_label(St0),
+ {Psucc,St2} = new_label(St1),
+ {Tis,Aft,St3} = guard_cg_list(Ts, Pfail, I, Vdb, Bef,
+ St2#cg{btype=fail,bfail=Pfail}),
+ %%ok = io:fwrite("cg ~w: ~p~n", [?LINE,{Rs,I,Vdb,Aft}]),
+ %% Set return values to false.
+ Mis = map(fun ({var,V}) -> {move,{atom,false},fetch_var(V, Aft)} end, Rs),
+ Live = {'%live',max_reg(Aft#sr.reg)},
+ {Tis ++ [Live,{jump,{f,Psucc}},
+ {label,Pfail}] ++ Mis ++ [Live,{label,Psucc}],
+ Aft,St3#cg{btype=St0#cg.btype,bfail=St0#cg.bfail}}.
+
+%% test_cg(TestName, Args, Fail, I, Vdb, Bef, St) -> {[Ainstr],Aft,St}.
+%% Generate test instruction. Use explicit fail label here.
+
+test_cg(Test, As, Fail, I, Vdb, Bef, St) ->
+ case test_type(Test, length(As)) of
+ {cond_op,Op} ->
+ Ars = cg_reg_args(As, Bef),
+ Int = clear_dead(Bef, I, Vdb),
+ {[{test,Op,{f,Fail},Ars}],
+ clear_dead(Int, I, Vdb),
+ St};
+ {rev_cond_op,Op} ->
+ [S1,S2] = cg_reg_args(As, Bef),
+ Int = clear_dead(Bef, I, Vdb),
+ {[{test,Op,{f,Fail},[S2,S1]}],
+ clear_dead(Int, I, Vdb),
+ St}
+ end.
+
+test_type(is_atom, 1) -> {cond_op,is_atom};
+test_type(is_boolean, 1) -> {cond_op,is_boolean};
+test_type(is_binary, 1) -> {cond_op,is_binary};
+test_type(is_constant, 1) -> {cond_op,is_constant};
+test_type(is_float, 1) -> {cond_op,is_float};
+test_type(is_function, 1) -> {cond_op,is_function};
+test_type(is_integer, 1) -> {cond_op,is_integer};
+test_type(is_list, 1) -> {cond_op,is_list};
+test_type(is_number, 1) -> {cond_op,is_number};
+test_type(is_pid, 1) -> {cond_op,is_pid};
+test_type(is_port, 1) -> {cond_op,is_port};
+test_type(is_reference, 1) -> {cond_op,is_reference};
+test_type(is_tuple, 1) -> {cond_op,is_tuple};
+test_type('=<', 2) -> {rev_cond_op,is_ge};
+test_type('>', 2) -> {rev_cond_op,is_lt};
+test_type('<', 2) -> {cond_op,is_lt};
+test_type('>=', 2) -> {cond_op,is_ge};
+test_type('==', 2) -> {cond_op,is_eq};
+test_type('/=', 2) -> {cond_op,is_ne};
+test_type('=:=', 2) -> {cond_op,is_eq_exact};
+test_type('=/=', 2) -> {cond_op,is_ne_exact};
+test_type(internal_is_record, 3) -> {cond_op,internal_is_record}.
+
+%% guard_cg_list([Kexpr], Fail, I, Vdb, StackReg, St) ->
+%% {[Ainstr],StackReg,St}.
+
+guard_cg_list(Kes, Fail, I, Vdb, Bef, St0) ->
+ {Keis,{Aft,St1}} =
+ flatmapfoldl(fun (Ke, {Inta,Sta}) ->
+ {Keis,Intb,Stb} =
+ guard_cg(Ke, Fail, Vdb, Inta, Sta),
+ {comment(Inta) ++ Keis,{Intb,Stb}}
+ end, {Bef,St0}, need_heap(Kes, I)),
+ {Keis,Aft,St1}.
+
+%% match_fmf(Fun, LastFail, State, [Clause]) -> {Is,Aft,State}.
+%% This is a special flatmapfoldl for match code gen where we
+%% generate a "failure" label for each clause. The last clause uses
+%% an externally generated failure label, LastFail. N.B. We do not
+%% know or care how the failure labels are used.
+
+match_fmf(F, LastFail, St, [H]) ->
+ F(H, LastFail, St);
+match_fmf(F, LastFail, St0, [H|T]) ->
+ {Fail,St1} = new_label(St0),
+ {R,Aft1,St2} = F(H, Fail, St1),
+ {Rs,Aft2,St3} = match_fmf(F, LastFail, St2, T),
+ {R ++ [{label,Fail}] ++ Rs,sr_merge(Aft1, Aft2),St3};
+match_fmf(_, _, St, []) -> {[],void,St}.
+
+%% call_cg(Func, [Arg], [Ret], Le, Vdb, StackReg, State) ->
+%% {[Ainstr],StackReg,State}.
+%% enter_cg(Func, [Arg], Le, Vdb, Bef, St) -> {[Ainstr],Aft,St}.
+%% Call and enter first put the arguments into registers and save any
+%% other registers, then clean up and compress the stack and set the
+%% frame size. Finally the actual call is made. Call then needs the
+%% return values filled in.
+
+call_cg({var,V}, As, Rs, Le, Vdb, Bef, St0) ->
+ {Sis,Int} = cg_setup_call(As++[{var,V}], Bef, Le#l.i, Vdb),
+ %% Put return values in registers.
+ Reg = load_vars(Rs, clear_regs(Int#sr.reg)),
+ %% Build complete code and final stack/register state.
+ Arity = length(As),
+ {Frees,Aft} = free_dead(clear_dead(Int#sr{reg=Reg}, Le#l.i, Vdb)),
+ {comment({call_fun,{var,V},As}) ++ Sis ++ Frees ++ [{call_fun,Arity}],
+ Aft,need_stack_frame(St0)};
+call_cg({remote,Mod,Name}, As, Rs, Le, Vdb, Bef, St0)
+ when element(1, Mod) == var;
+ element(1, Name) == var ->
+ {Sis,Int} = cg_setup_call(As++[Mod,Name], Bef, Le#l.i, Vdb),
+ %% Put return values in registers.
+ Reg = load_vars(Rs, clear_regs(Int#sr.reg)),
+ %% Build complete code and final stack/register state.
+ Arity = length(As),
+ Call = {apply,Arity},
+ St = need_stack_frame(St0),
+ %%{Call,St1} = build_call(Func, Arity, St0),
+ {Frees,Aft} = free_dead(clear_dead(Int#sr{reg=Reg}, Le#l.i, Vdb)),
+ {Sis ++ Frees ++ [Call],Aft,St};
+call_cg(Func, As, Rs, Le, Vdb, Bef, St0) ->
+ {Sis,Int} = cg_setup_call(As, Bef, Le#l.i, Vdb),
+ %% Put return values in registers.
+ Reg = load_vars(Rs, clear_regs(Int#sr.reg)),
+ %% Build complete code and final stack/register state.
+ Arity = length(As),
+ {Call,St1} = build_call(Func, Arity, St0),
+ {Frees,Aft} = free_dead(clear_dead(Int#sr{reg=Reg}, Le#l.i, Vdb)),
+ {comment({call,Func,As}) ++ Sis ++ Frees ++ Call,Aft,St1}.
+
+build_call({remote,{atom,erlang},{atom,'!'}}, 2, St0) ->
+ {[send],need_stack_frame(St0)};
+build_call({remote,{atom,Mod},{atom,Name}}, Arity, St0) ->
+ {[{call_ext,Arity,{extfunc,Mod,Name,Arity}}],need_stack_frame(St0)};
+build_call(Name, Arity, St0) when atom(Name) ->
+ {Lbl,St1} = local_func_label(Name, Arity, need_stack_frame(St0)),
+ {[{call,Arity,{f,Lbl}}],St1}.
+
+free_dead(#sr{stk=Stk0}=Aft) ->
+ {Instr,Stk} = free_dead(Stk0, 0, [], []),
+ {Instr,Aft#sr{stk=Stk}}.
+
+free_dead([dead|Stk], Y, Instr, StkAcc) ->
+ %% Note: kill/1 is equivalent to init/1 (translated by beam_asm).
+ %% We use kill/1 to help further optimisation passes.
+ free_dead(Stk, Y+1, [{kill,{yy,Y}}|Instr], [free|StkAcc]);
+free_dead([Any|Stk], Y, Instr, StkAcc) ->
+ free_dead(Stk, Y+1, Instr, [Any|StkAcc]);
+free_dead([], _, Instr, StkAcc) -> {Instr,reverse(StkAcc)}.
+
+enter_cg({var,V}, As, Le, Vdb, Bef, St0) ->
+ {Sis,Int} = cg_setup_call(As++[{var,V}], Bef, Le#l.i, Vdb),
+ %% Build complete code and final stack/register state.
+ Arity = length(As),
+ {comment({call_fun,{var,V},As}) ++ Sis ++ [{call_fun,Arity},return],
+ clear_dead(Int#sr{reg=clear_regs(Int#sr.reg)}, Le#l.i, Vdb),
+ need_stack_frame(St0)};
+enter_cg({remote,Mod,Name}=Func, As, Le, Vdb, Bef, St0)
+ when element(1, Mod) == var;
+ element(1, Name) == var ->
+ {Sis,Int} = cg_setup_call(As++[Mod,Name], Bef, Le#l.i, Vdb),
+ %% Build complete code and final stack/register state.
+ Arity = length(As),
+ Call = {apply_only,Arity},
+ St = need_stack_frame(St0),
+ {comment({enter,Func,As}) ++ Sis ++ [Call],
+ clear_dead(Int#sr{reg=clear_regs(Int#sr.reg)}, Le#l.i, Vdb),
+ St};
+enter_cg(Func, As, Le, Vdb, Bef, St0) ->
+ {Sis,Int} = cg_setup_call(As, Bef, Le#l.i, Vdb),
+ %% Build complete code and final stack/register state.
+ Arity = length(As),
+ {Call,St1} = build_enter(Func, Arity, St0),
+ {comment({enter,Func,As}) ++ Sis ++ Call,
+ clear_dead(Int#sr{reg=clear_regs(Int#sr.reg)}, Le#l.i, Vdb),
+ St1}.
+
+build_enter({remote,{atom,erlang},{atom,'!'}}, 2, St0) ->
+ {[send,return],need_stack_frame(St0)};
+build_enter({remote,{atom,Mod},{atom,Name}}, Arity, St0) ->
+ St1 = case trap_bif(Mod, Name, Arity) of
+ true -> need_stack_frame(St0);
+ false -> St0
+ end,
+ {[{call_ext_only,Arity,{extfunc,Mod,Name,Arity}}],St1};
+build_enter(Name, Arity, St0) when is_atom(Name) ->
+ {Lbl,St1} = local_func_label(Name, Arity, St0),
+ {[{call_only,Arity,{f,Lbl}}],St1}.
+
+%% local_func_label(Name, Arity, State) -> {Label,State'}
+%% Get the function entry label for a local function.
+
+local_func_label(Name, Arity, St0) ->
+ Key = {Name,Arity},
+ case keysearch(Key, 1, St0#cg.functable) of
+ {value,{Key,Label}} ->
+ {Label,St0};
+ false ->
+ {Label,St1} = new_label(St0),
+ {Label,St1#cg{functable=[{Key,Label}|St1#cg.functable]}}
+ end.
+
+%% need_stack_frame(State) -> State'
+%% Make a note in the state that this function will need a stack frame.
+
+need_stack_frame(#cg{need_frame=true}=St) -> St;
+need_stack_frame(St) -> St#cg{need_frame=true}.
+
+%% trap_bif(Mod, Name, Arity) -> true|false
+%% Trap bifs that need a stack frame.
+
+trap_bif(erlang, '!', 2) -> true;
+trap_bif(erlang, link, 1) -> true;
+trap_bif(erlang, unlink, 1) -> true;
+trap_bif(erlang, monitor_node, 2) -> true;
+trap_bif(erlang, group_leader, 2) -> true;
+trap_bif(erlang, exit, 2) -> true;
+trap_bif(_, _, _) -> false.
+
+%% bif_cg(Bif, [Arg], [Ret], Le, Vdb, StackReg, State) ->
+%% {[Ainstr],StackReg,State}.
+
+bif_cg(dsetelement, [Index0,Tuple0,New0], _Rs, Le, Vdb, Bef, St0) ->
+ [New,Tuple,{integer,Index1}] = cg_reg_args([New0,Tuple0,Index0], Bef),
+ Index = Index1-1,
+ {[{set_tuple_element,New,Tuple,Index}],
+ clear_dead(Bef, Le#l.i, Vdb), St0};
+bif_cg({make_fun,Func,Arity,Index,Uniq}, As, Rs, Le, Vdb, Bef, St0) ->
+ %% This behaves more like a function call.
+ {Sis,Int} = cg_setup_call(As, Bef, Le#l.i, Vdb),
+ Reg = load_vars(Rs, clear_regs(Int#sr.reg)),
+ {FuncLbl,St1} = local_func_label(Func, Arity, St0),
+ MakeFun = case St0#cg.new_funs of
+ true -> {make_fun2,{f,FuncLbl},Index,Uniq,length(As)};
+ false -> {make_fun,{f,FuncLbl},Uniq,length(As)}
+ end,
+ {comment({make_fun,{Func,Arity,Uniq},As}) ++ Sis ++
+ [MakeFun],
+ clear_dead(Int#sr{reg=Reg}, Le#l.i, Vdb),
+ St1};
+bif_cg(Bif, As, [{var,V}], Le, Vdb, Bef, St0) ->
+ Ars = cg_reg_args(As, Bef),
+
+ %% If we are inside a catch, we must save everything that will
+ %% be alive after the catch (because the BIF might fail and there
+ %% will be a jump to the code after the catch).
+ %% Currently, we are somewhat pessimistic in
+ %% that we save any variable that will be live after this BIF call.
+
+ {Sis,Int0} =
+ case St0#cg.in_catch of
+ true -> adjust_stack(Bef, Le#l.i, Le#l.i+1, Vdb);
+ false -> {[],Bef}
+ end,
+
+ Int1 = clear_dead(Int0, Le#l.i, Vdb),
+ Reg = put_reg(V, Int1#sr.reg),
+ Int = Int1#sr{reg=Reg},
+ Dst = fetch_reg(V, Reg),
+ {Sis ++ [{bif,Bif,bif_fail(St0#cg.btype, St0#cg.bfail, length(Ars)),Ars,Dst}],
+ clear_dead(Int, Le#l.i, Vdb), St0}.
+
+bif_fail(_, _, 0) -> nofail;
+bif_fail(exit, _, _) -> {f,0};
+bif_fail(fail, Fail, _) -> {f,Fail}.
+
+%% recv_loop_cg(TimeOut, ReceiveVar, ReceiveMatch, TimeOutExprs,
+%% [Ret], Le, Vdb, Bef, St) -> {[Ainstr],Aft,St}.
+
+recv_loop_cg(Te, Rvar, Rm, Tes, Rs, Le, Vdb, Bef, St0) ->
+ {Sis,Int0} = adjust_stack(Bef, Le#l.i, Le#l.i, Vdb),
+ Int1 = Int0#sr{reg=clear_regs(Int0#sr.reg)},
+ %% Get labels.
+ {Rl,St1} = new_label(St0),
+ {Tl,St2} = new_label(St1),
+ {Bl,St3} = new_label(St2),
+ St4 = St3#cg{break=Bl,recv=Rl}, %Set correct receive labels
+ {Ris,Raft,St5} = cg_recv_mesg(Rvar, Rm, Tl, Int1, St4),
+ {Wis,Taft,St6} = cg_recv_wait(Te, Tes, Le#l.i, Int1, St5),
+ Int2 = sr_merge(Raft, Taft), %Merge stack/registers
+ Reg = load_vars(Rs, Int2#sr.reg),
+ {Sis ++ Ris ++ [{label,Tl}] ++ Wis ++ [{label,Bl}],
+ clear_dead(Int2#sr{reg=Reg}, Le#l.i, Vdb),
+ St6#cg{break=St0#cg.break,recv=St0#cg.recv}}.
+
+%% cg_recv_mesg( ) -> {[Ainstr],Aft,St}.
+
+cg_recv_mesg({var,R}, Rm, Tl, Bef, St0) ->
+ Int0 = Bef#sr{reg=put_reg(R, Bef#sr.reg)},
+ Ret = fetch_reg(R, Int0#sr.reg),
+ %% Int1 = clear_dead(Int0, I, Rm#l.vdb),
+ Int1 = Int0,
+ {Mis,Int2,St1} = match_cg(Rm, none, Int1, St0),
+ {[{'%live',0},{label,St1#cg.recv},{loop_rec,{f,Tl},Ret}|Mis],Int2,St1}.
+
+%% cg_recv_wait(Te, Tes, I, Vdb, Int2, St3) -> {[Ainstr],Aft,St}.
+
+cg_recv_wait({atom,infinity}, Tes, I, Bef, St0) ->
+ %% We know that the 'after' body will never be executed.
+ %% But to keep the stack and register information up to date,
+ %% we will generate the code for the 'after' body, and then discard it.
+ Int1 = clear_dead(Bef, I, Tes#l.vdb),
+ {_,Int2,St1} = cg_block(Tes#l.ke, Tes#l.i, Tes#l.vdb,
+ Int1#sr{reg=clear_regs(Int1#sr.reg)}, St0),
+ {[{wait,{f,St1#cg.recv}}],Int2,St1};
+cg_recv_wait({integer,0}, Tes, _I, Bef, St0) ->
+ {Tis,Int,St1} = cg_block(Tes#l.ke, Tes#l.i, Tes#l.vdb, Bef, St0),
+ {[timeout|Tis],Int,St1};
+cg_recv_wait(Te, Tes, I, Bef, St0) ->
+ Reg = cg_reg_arg(Te, Bef),
+ %% Must have empty registers here! Bug if anything in registers.
+ Int0 = clear_dead(Bef, I, Tes#l.vdb),
+ {Tis,Int,St1} = cg_block(Tes#l.ke, Tes#l.i, Tes#l.vdb,
+ Int0#sr{reg=clear_regs(Int0#sr.reg)}, St0),
+ {[{wait_timeout,{f,St1#cg.recv},Reg},timeout] ++ Tis,Int,St1}.
+
+%% recv_next_cg(Le, Vdb, StackReg, St) -> {[Ainstr],StackReg,St}.
+%% Use adjust stack to clear stack, but only need it for Aft.
+
+recv_next_cg(Le, Vdb, Bef, St) ->
+ {Sis,Aft} = adjust_stack(Bef, Le#l.i, Le#l.i+1, Vdb),
+ {[{loop_rec_end,{f,St#cg.recv}}] ++ Sis,Aft,St}. %Joke
+
+%% try_cg(TryBlock, [BodyVar], TryBody, [ExcpVar], TryHandler, [Ret],
+%% Le, Vdb, StackReg, St) -> {[Ainstr],StackReg,St}.
+
+try_cg(Ta, Vs, Tb, Evs, Th, Rs, Le, Vdb, Bef, St0) ->
+ {B,St1} = new_label(St0), %Body label
+ {H,St2} = new_label(St1), %Handler label
+ {E,St3} = new_label(St2), %End label
+ TryTag = Ta#l.i,
+ Int1 = Bef#sr{stk=put_catch(TryTag, Bef#sr.stk)},
+ TryReg = fetch_stack({catch_tag,TryTag}, Int1#sr.stk),
+ {Ais,Int2,St4} = cg(Ta, Vdb, Int1, St3#cg{break=B,in_catch=true}),
+ Int3 = Int2#sr{stk=drop_catch(TryTag, Int2#sr.stk)},
+ St5 = St4#cg{break=E,in_catch=St3#cg.in_catch},
+ {Bis,Baft,St6} = cg(Tb, Vdb, Int3#sr{reg=load_vars(Vs, Int3#sr.reg)}, St5),
+ {His,Haft,St7} = cg(Th, Vdb, Int3#sr{reg=load_vars(Evs, Int3#sr.reg)}, St6),
+ Int4 = sr_merge(Baft, Haft), %Merge stack/registers
+ Aft = Int4#sr{reg=load_vars(Rs, Int4#sr.reg)},
+ {[{'try',TryReg,{f,H}}] ++ Ais ++
+ [{label,B},{try_end,TryReg}] ++ Bis ++
+ [{label,H},{try_case,TryReg}] ++ His ++
+ [{label,E}],
+ clear_dead(Aft, Le#l.i, Vdb),
+ St7#cg{break=St0#cg.break}}.
+
+%% catch_cg(CatchBlock, Ret, Le, Vdb, Bef, St) -> {[Ainstr],Aft,St}.
+
+catch_cg(C, {var,R}, Le, Vdb, Bef, St0) ->
+ {B,St1} = new_label(St0),
+ CatchTag = Le#l.i,
+ Int1 = Bef#sr{stk=put_catch(CatchTag, Bef#sr.stk)},
+ CatchReg = fetch_stack({catch_tag,CatchTag}, Int1#sr.stk),
+ {Cis,Int2,St2} = cg_block(C, Le#l.i, Le#l.vdb, Int1,
+ St1#cg{break=B,in_catch=true}),
+ Aft = Int2#sr{reg=load_reg(R, 0, Int2#sr.reg),
+ stk=drop_catch(CatchTag, Int2#sr.stk)},
+ {[{'catch',CatchReg,{f,B}}] ++ Cis ++
+ [{label,B},{catch_end,CatchReg}],
+ clear_dead(Aft, Le#l.i, Vdb),
+ St2#cg{break=St1#cg.break,in_catch=St1#cg.in_catch}}.
+
+%% set_cg([Var], Constr, Le, Vdb, Bef, St) -> {[Ainstr],Aft,St}.
+%% We have to be careful how a 'set' works. First the structure is
+%% built, then it is filled and finally things can be cleared. The
+%% annotation must reflect this and make sure that the return
+%% variable is allocated first.
+%%
+%% put_list for constructing a cons is an atomic instruction
+%% which can safely resuse one of the source registers as target.
+%% Also binaries can reuse a source register as target.
+
+set_cg([{var,R}], {cons,Es}, Le, Vdb, Bef, St) ->
+ [S1,S2] = map(fun ({var,V}) -> fetch_var(V, Bef);
+ (Other) -> Other
+ end, Es),
+ Int0 = clear_dead(Bef, Le#l.i, Vdb),
+ Int1 = Int0#sr{reg=put_reg(R, Int0#sr.reg)},
+ Ret = fetch_reg(R, Int1#sr.reg),
+ {[{put_list,S1,S2,Ret}], Int1, St};
+set_cg([{var,R}], {old_binary,Segs}, Le, Vdb, Bef, St) ->
+ Fail = bif_fail(St#cg.btype, St#cg.bfail, 42),
+ PutCode = cg_bin_put(Segs, Fail, Bef),
+ Code = cg_binary_old(PutCode),
+ Int0 = clear_dead(Bef, Le#l.i, Vdb),
+ Aft = Int0#sr{reg=put_reg(R, Int0#sr.reg)},
+ Ret = fetch_reg(R, Aft#sr.reg),
+ {Code ++ [{bs_final,Fail,Ret}],Aft,St};
+set_cg([{var,R}], {binary,Segs}, Le, Vdb, Bef, #cg{in_catch=InCatch}=St) ->
+ Int0 = Bef#sr{reg=put_reg(R, Bef#sr.reg)},
+ Target = fetch_reg(R, Int0#sr.reg),
+ Fail = bif_fail(St#cg.btype, St#cg.bfail, 42),
+ Temp = find_scratch_reg(Int0#sr.reg),
+ PutCode = cg_bin_put(Segs, Fail, Bef),
+ {Sis,Int1} =
+ case InCatch of
+ true -> adjust_stack(Int0, Le#l.i, Le#l.i+1, Vdb);
+ false -> {[],Int0}
+ end,
+ Aft = clear_dead(Int1, Le#l.i, Vdb),
+ Code = cg_binary(PutCode, Target, Temp, Fail, Aft),
+ {Sis++Code,Aft,St};
+set_cg([{var,R}], Con, Le, Vdb, Bef, St) ->
+ %% Find a place for the return register first.
+ Int = Bef#sr{reg=put_reg(R, Bef#sr.reg)},
+ Ret = fetch_reg(R, Int#sr.reg),
+ Ais = case Con of
+ {tuple,Es} ->
+ [{put_tuple,length(Es),Ret}] ++ cg_build_args(Es, Bef);
+ {var,V} -> % Normally removed by kernel optimizer.
+ [{move,fetch_var(V, Int),Ret}];
+ {string,Str} ->
+ [{put_string,length(Str),{string,Str},Ret}];
+ Other ->
+ [{move,Other,Ret}]
+ end,
+ {Ais,clear_dead(Int, Le#l.i, Vdb),St};
+set_cg([], {binary,Segs}, Le, Vdb, Bef, St) ->
+ Fail = bif_fail(St#cg.btype, St#cg.bfail, 42),
+ Target = find_scratch_reg(Bef#sr.reg),
+ Temp = find_scratch_reg(put_reg(Target, Bef#sr.reg)),
+ PutCode = cg_bin_put(Segs, Fail, Bef),
+ Code = cg_binary(PutCode, Target, Temp, Fail, Bef),
+ Aft = clear_dead(Bef, Le#l.i, Vdb),
+ {Code,Aft,St};
+set_cg([], {old_binary,Segs}, Le, Vdb, Bef, St) ->
+ Fail = bif_fail(St#cg.btype, St#cg.bfail, 42),
+ PutCode = cg_bin_put(Segs, Fail, Bef),
+ Ais0 = cg_binary_old(PutCode),
+ Ret = find_scratch_reg(Bef#sr.reg),
+ Ais = Ais0 ++ [{bs_final,Fail,Ret}],
+ {Ais,clear_dead(Bef, Le#l.i, Vdb),St};
+set_cg([], _, Le, Vdb, Bef, St) ->
+ %% This should have been stripped by compiler, just cleanup.
+ {[],clear_dead(Bef, Le#l.i, Vdb), St}.
+
+
+%%%
+%%% Code generation for constructing binaries.
+%%%
+
+cg_binary(PutCode, Target, Temp, Fail, Bef) ->
+ SzCode = cg_binary_size(PutCode, Target, Temp, Fail),
+ MaxRegs = max_reg(Bef#sr.reg),
+ Code = SzCode ++ [{bs_init2,Fail,Target,MaxRegs,{field_flags,[]},Target}|PutCode],
+ cg_bin_opt(Code).
+
+cg_binary_size(PutCode, Target, Temp, Fail) ->
+ Szs = cg_binary_size_1(PutCode, 0, []),
+ cg_binary_size_expr(Szs, Target, Temp, Fail).
+
+cg_binary_size_1([{_Put,_Fail,S,U,_Flags,Src}|T], Bits, Acc) ->
+ cg_binary_size_2(S, U, Src, T, Bits, Acc);
+cg_binary_size_1([], Bits, Acc) ->
+ Bytes = Bits div 8,
+ RemBits = Bits rem 8,
+ Res = sort([{1,{integer,RemBits}},{8,{integer,Bytes}}|Acc]),
+ cg_binary_size_3(Res).
+
+cg_binary_size_2({integer,N}, U, _, Next, Bits, Acc) ->
+ cg_binary_size_1(Next, Bits+N*U, Acc);
+cg_binary_size_2({atom,all}, 8, E, Next, Bits, Acc) ->
+ cg_binary_size_1(Next, Bits, [{8,{size,E}}|Acc]);
+cg_binary_size_2(Reg, 1, _, Next, Bits, Acc) ->
+ cg_binary_size_1(Next, Bits, [{1,Reg}|Acc]);
+cg_binary_size_2(Reg, 8, _, Next, Bits, Acc) ->
+ cg_binary_size_1(Next, Bits, [{8,Reg}|Acc]);
+cg_binary_size_2(Reg, U, _, Next, Bits, Acc) ->
+ cg_binary_size_1(Next, Bits, [{1,{'*',Reg,U}}|Acc]).
+
+cg_binary_size_3([{_,{integer,0}}|T]) ->
+ cg_binary_size_3(T);
+cg_binary_size_3([{U,S1},{U,S2}|T]) ->
+ {L0,Rest} = cg_binary_size_4(T, U, []),
+ L = [S1,S2|L0],
+ [{U,L}|cg_binary_size_3(Rest)];
+cg_binary_size_3([{U,S}|T]) ->
+ [{U,[S]}|cg_binary_size_3(T)];
+cg_binary_size_3([]) -> [].
+
+cg_binary_size_4([{U,S}|T], U, Acc) ->
+ cg_binary_size_4(T, U, [S|Acc]);
+cg_binary_size_4(T, _, Acc) ->
+ {Acc,T}.
+
+%% cg_binary_size_expr/4
+%% Generate code for calculating the resulting size of a binary.
+cg_binary_size_expr(Sizes, Target, Temp, Fail) ->
+ cg_binary_size_expr_1(Sizes, Target, Temp, Fail,
+ [{move,{integer,0},Target}]).
+
+cg_binary_size_expr_1([{1,E0}|T], Target, Temp, Fail, Acc) ->
+ E1 = cg_gen_binsize(E0, Target, Temp, Fail, Acc),
+ E = [{bs_bits_to_bytes,Fail,Target,Target}|E1],
+ cg_binary_size_expr_1(T, Target, Temp, Fail, E);
+cg_binary_size_expr_1([{8,E0}], Target, Temp, Fail, Acc) ->
+ E = cg_gen_binsize(E0, Target, Temp, Fail, Acc),
+ reverse(E);
+cg_binary_size_expr_1([], _, _, _, Acc) -> reverse(Acc).
+
+cg_gen_binsize([{'*',A,B}|T], Target, Temp, Fail, Acc) ->
+ cg_gen_binsize(T, Target, Temp, Fail,
+ [{bs_add,Fail,[Target,A,B],Target}|Acc]);
+cg_gen_binsize([{size,B}|T], Target, Temp, Fail, Acc) ->
+ cg_gen_binsize([Temp|T], Target, Temp, Fail,
+ [{bif,size,Fail,[B],Temp}|Acc]);
+cg_gen_binsize([E0|T], Target, Temp, Fail, Acc) ->
+ cg_gen_binsize(T, Target, Temp, Fail,
+ [{bs_add,Fail,[Target,E0,1],Target}|Acc]);
+cg_gen_binsize([], _, _, _, Acc) -> Acc.
+
+%% cg_bin_opt(Code0) -> Code
+%% Optimize the size calculations for binary construction.
+
+cg_bin_opt([{move,{integer,0},D},{bs_add,_,[D,{integer,_}=S,1],Dst}|Is]) ->
+ cg_bin_opt([{move,S,Dst}|Is]);
+cg_bin_opt([{move,{integer,0},D},{bs_add,Fail,[D,S,U],Dst}|Is]) ->
+ cg_bin_opt([{bs_add,Fail,[{integer,0},S,U],Dst}|Is]);
+cg_bin_opt([{move,{integer,Bytes},D},{bs_init2,Fail,D,Regs0,Flags,D}|Is]) ->
+ Regs = cg_bo_newregs(Regs0, D),
+ cg_bin_opt([{bs_init2,Fail,Bytes,Regs,Flags,D}|Is]);
+cg_bin_opt([{move,Src,D},{bs_init2,Fail,D,Regs0,Flags,D}|Is]) ->
+ Regs = cg_bo_newregs(Regs0, D),
+ cg_bin_opt([{bs_init2,Fail,Src,Regs,Flags,D}|Is]);
+cg_bin_opt([{move,Src,Dst},{bs_bits_to_bytes,Fail,Dst,Dst}|Is]) ->
+ cg_bin_opt([{bs_bits_to_bytes,Fail,Src,Dst}|Is]);
+cg_bin_opt([{move,Src1,Dst},{bs_add,Fail,[Dst,Src2,U],Dst}|Is]) ->
+ cg_bin_opt([{bs_add,Fail,[Src1,Src2,U],Dst}|Is]);
+cg_bin_opt([{bs_bits_to_bytes,Fail,{integer,N},_}|Is0]) when N rem 8 =/= 0 ->
+ case Fail of
+ {f,0} ->
+ Is = [{move,{atom,badarg},{x,0}},
+ {call_ext_only,1,{extfunc,erlang,error,1}}|Is0],
+ cg_bin_opt(Is);
+ _ ->
+ cg_bin_opt([{jump,Fail}|Is0])
+ end;
+cg_bin_opt([I|Is]) ->
+ [I|cg_bin_opt(Is)];
+cg_bin_opt([]) -> [].
+
+cg_bo_newregs(R, {x,X}) when R-1 =:= X -> R-1;
+cg_bo_newregs(R, _) -> R.
+
+%% Common for new and old binary code generation.
+
+cg_bin_put({bin_seg,S0,U,T,Fs,[E0,Next]}, Fail, Bef) ->
+ S1 = case S0 of
+ {var,Sv} -> fetch_var(Sv, Bef);
+ _ -> S0
+ end,
+ E1 = case E0 of
+ {var,V} -> fetch_var(V, Bef);
+ Other -> Other
+ end,
+ Op = case T of
+ integer -> bs_put_integer;
+ binary -> bs_put_binary;
+ float -> bs_put_float
+ end,
+ [{Op,Fail,S1,U,{field_flags,Fs},E1}|cg_bin_put(Next, Fail, Bef)];
+cg_bin_put(bin_end, _, _) -> [].
+
+%% Old style.
+
+cg_binary_old(PutCode) ->
+ [cg_bs_init(PutCode)] ++ need_bin_buf(PutCode).
+
+cg_bs_init(Code) ->
+ {Size,Fs} = foldl(fun ({_,_,{integer,N},U,_,_}, {S,Fs}) ->
+ {S + N*U,Fs};
+ (_, {S,_}) ->
+ {S,[]}
+ end, {0,[exact]}, Code),
+ {bs_init,(Size+7) div 8,{field_flags,Fs}}.
+
+need_bin_buf(Code0) ->
+ {Code1,F,H} = foldr(fun ({_,_,{integer,N},U,_,_}=Bs, {Code,F,H}) ->
+ {[Bs|Code],F,H + N*U};
+ ({_,_,_,_,_,_}=Bs, {Code,F,H}) ->
+ {[Bs|need_bin_buf_need(H, F, Code)],true,0}
+ end, {[],false,0}, Code0),
+ need_bin_buf_need(H, F, Code1).
+
+need_bin_buf_need(0, false, Rest) -> Rest;
+need_bin_buf_need(H, _, Rest) -> [{bs_need_buf,H}|Rest].
+
+cg_build_args(As, Bef) ->
+ map(fun ({var,V}) -> {put,fetch_var(V, Bef)};
+ (Other) -> {put,Other}
+ end, As).
+
+%% return_cg([Val], Le, Vdb, Bef, St) -> {[Ainstr],Aft,St}.
+%% break_cg([Val], Le, Vdb, Bef, St) -> {[Ainstr],Aft,St}.
+%% These are very simple, just put return/break values in registers
+%% from 0, then return/break. Use the call setup to clean up stack,
+%% but must clear registers to ensure sr_merge works correctly.
+
+return_cg(Rs, Le, Vdb, Bef, St) ->
+ {Ms,Int} = cg_setup_call(Rs, Bef, Le#l.i, Vdb),
+ {comment({return,Rs}) ++ Ms ++ [return],
+ Int#sr{reg=clear_regs(Int#sr.reg)},St}.
+
+break_cg(Bs, Le, Vdb, Bef, St) ->
+ {Ms,Int} = cg_setup_call(Bs, Bef, Le#l.i, Vdb),
+ {comment({break,Bs}) ++ Ms ++ [{jump,{f,St#cg.break}}],
+ Int#sr{reg=clear_regs(Int#sr.reg)},St}.
+
+%% cg_reg_arg(Arg0, Info) -> Arg
+%% cg_reg_args([Arg0], Info) -> [Arg]
+%% Convert argument[s] into registers. Literal values are returned unchanged.
+
+cg_reg_args(As, Bef) -> [cg_reg_arg(A, Bef) || A <- As].
+
+cg_reg_arg({var,V}, Bef) -> fetch_var(V, Bef);
+cg_reg_arg(Literal, _) -> Literal.
+
+%% cg_setup_call([Arg], Bef, Cur, Vdb) -> {[Instr],Aft}.
+%% Do the complete setup for a call/enter.
+
+cg_setup_call(As, Bef, I, Vdb) ->
+ {Ms,Int0} = cg_call_args(As, Bef, I, Vdb),
+ %% Have set up arguments, can now clean up, compress and save to stack.
+ Int1 = Int0#sr{stk=clear_dead_stk(Int0#sr.stk, I, Vdb),res=[]},
+ {Sis,Int2} = adjust_stack(Int1, I, I+1, Vdb),
+ {Ms ++ Sis ++ [{'%live',length(As)}],Int2}.
+
+%% cg_call_args([Arg], SrState) -> {[Instr],SrState}.
+%% Setup the arguments to a call/enter/bif. Put the arguments into
+%% consecutive registers starting at {x,0} moving any data which
+%% needs to be saved. Return a modified SrState structure with the
+%% new register contents. N.B. the resultant register info will
+%% contain non-variable values when there are non-variable values.
+%%
+%% This routine is complicated by unsaved values in x registers.
+%% We'll move away any unsaved values that are in the registers
+%% to be overwritten by the arguments.
+
+cg_call_args(As, Bef, I, Vdb) ->
+ Regs0 = load_arg_regs(Bef#sr.reg, As),
+ Unsaved = unsaved_registers(Regs0, Bef#sr.stk, I, I+1, Vdb),
+ {UnsavedMoves,Regs} = move_unsaved(Unsaved, Bef#sr.reg, Regs0),
+ Moves0 = gen_moves(As, Bef),
+ Moves = order_moves(Moves0, find_scratch_reg(Regs)),
+ {UnsavedMoves ++ Moves,Bef#sr{reg=Regs}}.
+
+%% load_arg_regs([Reg], Arguments) -> [Reg]
+%% Update the register descriptor to include the arguments (from {x,0}
+%% and upwards). Values in argument register are overwritten.
+%% Values in x registers above the arguments are preserved.
+
+load_arg_regs(Regs, As) -> load_arg_regs(Regs, As, 0).
+
+load_arg_regs([_|Rs], [{var,V}|As], I) -> [{I,V}|load_arg_regs(Rs, As, I+1)];
+load_arg_regs([_|Rs], [A|As], I) -> [{I,A}|load_arg_regs(Rs, As, I+1)];
+load_arg_regs([], [{var,V}|As], I) -> [{I,V}|load_arg_regs([], As, I+1)];
+load_arg_regs([], [A|As], I) -> [{I,A}|load_arg_regs([], As, I+1)];
+load_arg_regs(Rs, [], _) -> Rs.
+
+%% Returns the variables must be saved and are currently in the
+%% x registers that are about to be overwritten by the arguments.
+
+unsaved_registers(Regs, Stk, Fb, Lf, Vdb) ->
+ [V || {V,F,L} <- Vdb,
+ F < Fb,
+ L >= Lf,
+ not on_stack(V, Stk),
+ not in_reg(V, Regs)].
+
+in_reg(V, Regs) -> keymember(V, 2, Regs).
+
+%% Move away unsaved variables from the registers that are to be
+%% overwritten by the arguments.
+move_unsaved(Vs, OrigRegs, NewRegs) ->
+ move_unsaved(Vs, OrigRegs, NewRegs, []).
+
+move_unsaved([V|Vs], OrigRegs, NewRegs0, Acc) ->
+ NewRegs = put_reg(V, NewRegs0),
+ Src = fetch_reg(V, OrigRegs),
+ Dst = fetch_reg(V, NewRegs),
+ move_unsaved(Vs, OrigRegs, NewRegs, [{move,Src,Dst}|Acc]);
+move_unsaved([], _, Regs, Acc) -> {Acc,Regs}.
+
+%% gen_moves(As, Sr)
+%% Generate the basic move instruction to move the arguments
+%% to their proper registers. The list will be sorted on
+%% destinations. (I.e. the move to {x,0} will be first --
+%% see the comment to order_moves/2.)
+
+gen_moves(As, Sr) -> gen_moves(As, Sr, 0, []).
+
+gen_moves([{var,V}|As], Sr, I, Acc) ->
+ case fetch_var(V, Sr) of
+ {x,I} -> gen_moves(As, Sr, I+1, Acc);
+ Reg -> gen_moves(As, Sr, I+1, [{move,Reg,{x,I}}|Acc])
+ end;
+gen_moves([A|As], Sr, I, Acc) ->
+ gen_moves(As, Sr, I+1, [{move,A,{x,I}}|Acc]);
+gen_moves([], _, _, Acc) -> lists:keysort(3, Acc).
+
+%% order_moves([Move], ScratchReg) -> [Move]
+%% Orders move instruction so that source registers are not
+%% destroyed before they are used. If there are cycles
+%% (such as {move,{x,0},{x,1}}, {move,{x,1},{x,1}}),
+%% the scratch register is used to break up the cycle.
+%% If possible, the first move of the input list is placed
+%% last in the result list (to make the move to {x,0} occur
+%% just before the call to allow the Beam loader to coalesce
+%% the instructions).
+
+order_moves(Ms, Scr) -> order_moves(Ms, Scr, []).
+
+order_moves([{move,_,_}=M|Ms0], ScrReg, Acc0) ->
+ {Chain,Ms} = collect_chain(Ms0, [M], ScrReg),
+ Acc = reverse(Chain, Acc0),
+ order_moves(Ms, ScrReg, Acc);
+order_moves([], _, Acc) -> Acc.
+
+collect_chain(Ms, Path, ScrReg) ->
+ collect_chain(Ms, Path, [], ScrReg).
+
+collect_chain([{move,Src,Same}=M|Ms0], [{move,Same,_}|_]=Path, Others, ScrReg) ->
+ case keysearch(Src, 3, Path) of
+ {value,_} -> %We have a cycle.
+ {break_up_cycle(M, Path, ScrReg),reverse(Others, Ms0)};
+ false ->
+ collect_chain(reverse(Others, Ms0), [M|Path], [], ScrReg)
+ end;
+collect_chain([M|Ms], Path, Others, ScrReg) ->
+ collect_chain(Ms, Path, [M|Others], ScrReg);
+collect_chain([], Path, Others, _) ->
+ {Path,Others}.
+
+break_up_cycle({move,Src,_}=M, Path, ScrReg) ->
+ [{move,ScrReg,Src},M|break_up_cycle1(Src, Path, ScrReg)].
+
+break_up_cycle1(Dst, [{move,Src,Dst}|Path], ScrReg) ->
+ [{move,Src,ScrReg}|Path];
+break_up_cycle1(Dst, [M|Path], LastMove) ->
+ [M|break_up_cycle1(Dst, Path, LastMove)].
+
+%% clear_dead(Sr, Until, Vdb) -> Aft.
+%% Remove all variables in Sr which have died AT ALL so far.
+
+clear_dead(Sr, Until, Vdb) ->
+ Sr#sr{reg=clear_dead_reg(Sr, Until, Vdb),
+ stk=clear_dead_stk(Sr#sr.stk, Until, Vdb)}.
+
+clear_dead_reg(Sr, Until, Vdb) ->
+ Reg = map(fun ({I,V}) ->
+ case vdb_find(V, Vdb) of
+ {V,_,L} when L > Until -> {I,V};
+ _ -> free %Remove anything else
+ end;
+ ({reserved,I,V}) -> {reserved,I,V};
+ (free) -> free
+ end, Sr#sr.reg),
+ reserve(Sr#sr.res, Reg, Sr#sr.stk).
+
+clear_dead_stk(Stk, Until, Vdb) ->
+ map(fun ({V}) ->
+ case vdb_find(V, Vdb) of
+ {V,_,L} when L > Until -> {V};
+ _ -> dead %Remove anything else
+ end;
+ (free) -> free;
+ (dead) -> dead
+ end, Stk).
+
+%% sr_merge(Sr1, Sr2) -> Sr.
+%% Merge two stack/register states keeping the longest of both stack
+%% and register. Perform consistency check on both, elements must be
+%% the same. Allow frame size 'void' to make easy creation of
+%% "empty" frame.
+
+sr_merge(#sr{reg=R1,stk=S1,res=[]}, #sr{reg=R2,stk=S2,res=[]}) ->
+ #sr{reg=longest(R1, R2),stk=longest(S1, S2),res=[]};
+sr_merge(void, S2) -> S2#sr{res=[]};
+sr_merge(S1, void) -> S1#sr{res=[]}.
+
+longest([H|T1], [H|T2]) -> [H|longest(T1, T2)];
+longest([dead|T1], [free|T2]) -> [dead|longest(T1, T2)];
+longest([free|T1], [dead|T2]) -> [dead|longest(T1, T2)];
+longest([dead|T1], []) -> [dead|T1];
+longest([], [dead|T2]) -> [dead|T2];
+longest([free|T1], []) -> [free|T1];
+longest([], [free|T2]) -> [free|T2];
+longest([], []) -> [].
+
+%% adjust_stack(Bef, FirstBefore, LastFrom, Vdb) -> {[Ainstr],Aft}.
+%% Do complete stack adjustment by compressing stack and adding
+%% variables to be saved. Try to optimise ordering on stack by
+%% having reverse order to their lifetimes.
+%%
+%% In Beam, there is a fixed stack frame and no need to do stack compression.
+
+adjust_stack(Bef, Fb, Lf, Vdb) ->
+ Stk0 = Bef#sr.stk,
+ {Stk1,Saves} = save_stack(Stk0, Fb, Lf, Vdb),
+ {saves(Saves, Bef#sr.reg, Stk1),
+ Bef#sr{stk=Stk1}}.
+
+%% save_stack(Stack, FirstBefore, LastFrom, Vdb) -> {[SaveVar],NewStack}.
+%% Save variables which are used past current point and which are not
+%% already on the stack.
+
+save_stack(Stk0, Fb, Lf, Vdb) ->
+ %% New variables that are in use but not on stack.
+ New = [ {V,F,L} || {V,F,L} <- Vdb,
+ F < Fb,
+ L >= Lf,
+ not on_stack(V, Stk0) ],
+ %% Add new variables that are not just dropped immediately.
+ %% N.B. foldr works backwards from the end!!
+ Saves = [ V || {V,_,_} <- keysort(3, New) ],
+ Stk1 = foldr(fun (V, Stk) -> put_stack(V, Stk) end, Stk0, Saves),
+ {Stk1,Saves}.
+
+%% saves([SaveVar], Reg, Stk) -> [{move,Reg,Stk}].
+%% Generate move instructions to save variables onto stack. The
+%% stack/reg info used is that after the new stack has been made.
+
+saves(Ss, Reg, Stk) ->
+ Res = map(fun (V) ->
+ {move,fetch_reg(V, Reg),fetch_stack(V, Stk)}
+ end, Ss),
+ Res.
+
+%% comment(C) -> ['%'{C}].
+
+%comment(C) -> [{'%',C}].
+comment(_) -> [].
+
+%% fetch_var(VarName, StkReg) -> r{R} | sp{Sp}.
+%% find_var(VarName, StkReg) -> ok{r{R} | sp{Sp}} | error.
+%% Fetch/find a variable in either the registers or on the
+%% stack. Fetch KNOWS it's there.
+
+fetch_var(V, Sr) ->
+ case find_reg(V, Sr#sr.reg) of
+ {ok,R} -> R;
+ error -> fetch_stack(V, Sr#sr.stk)
+ end.
+
+% find_var(V, Sr) ->
+% case find_reg(V, Sr#sr.reg) of
+% {ok,R} -> {ok,R};
+% error ->
+% case find_stack(V, Sr#sr.stk) of
+% {ok,S} -> {ok,S};
+% error -> error
+% end
+% end.
+
+load_vars(Vs, Regs) ->
+ foldl(fun ({var,V}, Rs) -> put_reg(V, Rs) end, Regs, Vs).
+
+%% put_reg(Val, Regs) -> Regs.
+%% load_reg(Val, Reg, Regs) -> Regs.
+%% free_reg(Val, Regs) -> Regs.
+%% find_reg(Val, Regs) -> ok{r{R}} | error.
+%% fetch_reg(Val, Regs) -> r{R}.
+%% Functions to interface the registers.
+%% put_reg puts a value into a free register,
+%% load_reg loads a value into a fixed register
+%% free_reg frees a register containing a specific value.
+
+% put_regs(Vs, Rs) -> foldl(fun put_reg/2, Rs, Vs).
+
+put_reg(V, Rs) -> put_reg_1(V, Rs, 0).
+
+put_reg_1(V, [free|Rs], I) -> [{I,V}|Rs];
+put_reg_1(V, [{reserved,I,V}|Rs], I) -> [{I,V}|Rs];
+put_reg_1(V, [R|Rs], I) -> [R|put_reg_1(V, Rs, I+1)];
+put_reg_1(V, [], I) -> [{I,V}].
+
+load_reg(V, R, Rs) -> load_reg_1(V, R, Rs, 0).
+
+load_reg_1(V, I, [_|Rs], I) -> [{I,V}|Rs];
+load_reg_1(V, I, [R|Rs], C) -> [R|load_reg_1(V, I, Rs, C+1)];
+load_reg_1(V, I, [], I) -> [{I,V}];
+load_reg_1(V, I, [], C) -> [free|load_reg_1(V, I, [], C+1)].
+
+% free_reg(V, [{I,V}|Rs]) -> [free|Rs];
+% free_reg(V, [R|Rs]) -> [R|free_reg(V, Rs)];
+% free_reg(V, []) -> [].
+
+fetch_reg(V, [{I,V}|_]) -> {x,I};
+fetch_reg(V, [_|SRs]) -> fetch_reg(V, SRs).
+
+find_reg(V, [{I,V}|_]) -> {ok,{x,I}};
+find_reg(V, [_|SRs]) -> find_reg(V, SRs);
+find_reg(_, []) -> error.
+
+%% For the bit syntax, we need a scratch register if we are constructing
+%% a binary that will not be used.
+
+find_scratch_reg(Rs) -> find_scratch_reg(Rs, 0).
+
+find_scratch_reg([free|_], I) -> {x,I};
+find_scratch_reg([_|Rs], I) -> find_scratch_reg(Rs, I+1);
+find_scratch_reg([], I) -> {x,I}.
+
+%%copy_reg(Val, R, Regs) -> load_reg(Val, R, Regs).
+%%move_reg(Val, R, Regs) -> load_reg(Val, R, free_reg(Val, Regs)).
+
+%%clear_regs(Regs) -> map(fun (R) -> free end, Regs).
+clear_regs(_) -> [].
+
+max_reg(Regs) ->
+ foldl(fun ({I,_}, _) -> I;
+ (_, Max) -> Max end,
+ -1, Regs) + 1.
+
+%% put_stack(Val, [{Val}]) -> [{Val}].
+%% fetch_stack(Var, Stk) -> sp{S}.
+%% find_stack(Var, Stk) -> ok{sp{S}} | error.
+%% Functions to interface the stack.
+
+put_stack(Val, []) -> [{Val}];
+put_stack(Val, [dead|Stk]) -> [{Val}|Stk];
+put_stack(Val, [free|Stk]) -> [{Val}|Stk];
+put_stack(Val, [NotFree|Stk]) -> [NotFree|put_stack(Val, Stk)].
+
+put_stack_carefully(Val, Stk0) ->
+ case catch put_stack_carefully1(Val, Stk0) of
+ error -> error;
+ Stk1 when list(Stk1) -> Stk1
+ end.
+
+put_stack_carefully1(_, []) -> throw(error);
+put_stack_carefully1(Val, [dead|Stk]) -> [{Val}|Stk];
+put_stack_carefully1(Val, [free|Stk]) -> [{Val}|Stk];
+put_stack_carefully1(Val, [NotFree|Stk]) ->
+ [NotFree|put_stack_carefully1(Val, Stk)].
+
+fetch_stack(Var, Stk) -> fetch_stack(Var, Stk, 0).
+
+fetch_stack(V, [{V}|_], I) -> {yy,I};
+fetch_stack(V, [_|Stk], I) -> fetch_stack(V, Stk, I+1).
+
+% find_stack(Var, Stk) -> find_stack(Var, Stk, 0).
+
+% find_stack(V, [{V}|Stk], I) -> {ok,{yy,I}};
+% find_stack(V, [O|Stk], I) -> find_stack(V, Stk, I+1);
+% find_stack(V, [], I) -> error.
+
+on_stack(V, Stk) -> keymember(V, 1, Stk).
+
+%% put_catch(CatchTag, Stack) -> Stack'
+%% drop_catch(CatchTag, Stack) -> Stack'
+%% Special interface for putting and removing catch tags, to ensure that
+%% catches nest properly. Also used for try tags.
+
+put_catch(Tag, Stk0) -> put_catch(Tag, reverse(Stk0), []).
+
+put_catch(Tag, [], Stk) ->
+ put_stack({catch_tag,Tag}, Stk);
+put_catch(Tag, [{{catch_tag,_}}|_]=RevStk, Stk) ->
+ reverse(RevStk, put_stack({catch_tag,Tag}, Stk));
+put_catch(Tag, [Other|Stk], Acc) ->
+ put_catch(Tag, Stk, [Other|Acc]).
+
+drop_catch(Tag, [{{catch_tag,Tag}}|Stk]) -> [free|Stk];
+drop_catch(Tag, [Other|Stk]) -> [Other|drop_catch(Tag, Stk)].
+
+%%%
+%%% Finish the code generation for the bit syntax matching.
+%%%
+
+bs_function({function,Name,Arity,CLabel,Asm0}=Func) ->
+ case bs_needed(Asm0, 0, false, []) of
+ {false,[]} -> Func;
+ {true,Dict} ->
+ Asm = bs_replace(Asm0, Dict, []),
+ {function,Name,Arity,CLabel,Asm}
+ end.
+
+%%%
+%%% Pass 1: Found out which bs_restore's that are needed. For now we assume
+%%% that a bs_restore is needed unless it is directly preceeded by a bs_save.
+%%%
+
+bs_needed([{bs_save,Name},{bs_restore,Name}|T], N, _BsUsed, Dict) ->
+ bs_needed(T, N, true, Dict);
+bs_needed([{bs_save,_Name}|T], N, _BsUsed, Dict) ->
+ bs_needed(T, N, true, Dict);
+bs_needed([{bs_restore,Name}|T], N, _BsUsed, Dict) ->
+ case keysearch(Name, 1, Dict) of
+ {value,{Name,_}} -> bs_needed(T, N, true, Dict);
+ false -> bs_needed(T, N+1, true, [{Name,N}|Dict])
+ end;
+bs_needed([{bs_init,_,_}|T], N, _, Dict) ->
+ bs_needed(T, N, true, Dict);
+bs_needed([{bs_init2,_,_,_,_,_}|T], N, _, Dict) ->
+ bs_needed(T, N, true, Dict);
+bs_needed([{bs_start_match,_,_}|T], N, _, Dict) ->
+ bs_needed(T, N, true, Dict);
+bs_needed([_|T], N, BsUsed, Dict) ->
+ bs_needed(T, N, BsUsed, Dict);
+bs_needed([], _, BsUsed, Dict) -> {BsUsed,Dict}.
+
+%%%
+%%% Pass 2: Only needed if there were some bs_* instructions found.
+%%%
+%%% Remove any bs_save with a name that never were found to be restored
+%%% in the first pass.
+%%%
+
+bs_replace([{bs_save,Name}=Save,{bs_restore,Name}|T], Dict, Acc) ->
+ bs_replace([Save|T], Dict, Acc);
+bs_replace([{bs_save,Name}|T], Dict, Acc) ->
+ case keysearch(Name, 1, Dict) of
+ {value,{Name,N}} ->
+ bs_replace(T, Dict, [{bs_save,N}|Acc]);
+ false ->
+ bs_replace(T, Dict, Acc)
+ end;
+bs_replace([{bs_restore,Name}|T], Dict, Acc) ->
+ case keysearch(Name, 1, Dict) of
+ {value,{Name,N}} ->
+ bs_replace(T, Dict, [{bs_restore,N}|Acc]);
+ false ->
+ bs_replace(T, Dict, Acc)
+ end;
+bs_replace([{bs_init2,Fail,Bytes,Regs,Flags,Dst}|T0], Dict, Acc) ->
+ case bs_find_test_heap(T0) of
+ none ->
+ bs_replace(T0, Dict, [{bs_init2,Fail,Bytes,0,Regs,Flags,Dst}|Acc]);
+ {T,Words} ->
+ bs_replace(T, Dict, [{bs_init2,Fail,Bytes,Words,Regs,Flags,Dst}|Acc])
+ end;
+bs_replace([H|T], Dict, Acc) ->
+ bs_replace(T, Dict, [H|Acc]);
+bs_replace([], _, Acc) -> reverse(Acc).
+
+bs_find_test_heap(Is) ->
+ bs_find_test_heap_1(Is, []).
+
+bs_find_test_heap_1([{bs_put_integer,_,_,_,_,_}=I|Is], Acc) ->
+ bs_find_test_heap_1(Is, [I|Acc]);
+bs_find_test_heap_1([{bs_put_float,_,_,_,_,_}=I|Is], Acc) ->
+ bs_find_test_heap_1(Is, [I|Acc]);
+bs_find_test_heap_1([{bs_put_binary,_,_,_,_,_}=I|Is], Acc) ->
+ bs_find_test_heap_1(Is, [I|Acc]);
+bs_find_test_heap_1([{test_heap,Words,_}|Is], Acc) ->
+ {reverse(Acc, Is),Words};
+bs_find_test_heap_1(_, _) -> none.
+
+%% new_label(St) -> {L,St}.
+
+new_label(St) ->
+ L = St#cg.lcount,
+ {L,St#cg{lcount=L+1}}.
+
+flatmapfoldl(F, Accu0, [Hd|Tail]) ->
+ {R,Accu1} = F(Hd, Accu0),
+ {Rs,Accu2} = flatmapfoldl(F, Accu1, Tail),
+ {R++Rs,Accu2};
+flatmapfoldl(_, Accu, []) -> {[],Accu}.
+
+flatmapfoldr(F, Accu0, [Hd|Tail]) ->
+ {Rs,Accu1} = flatmapfoldr(F, Accu0, Tail),
+ {R,Accu2} = F(Hd, Accu1),
+ {R++Rs,Accu2};
+flatmapfoldr(_, Accu, []) -> {[],Accu}.
diff --git a/lib/dialyzer/test/options1_tests_SUITE_data/src/compiler/v3_core.erl b/lib/dialyzer/test/options1_tests_SUITE_data/src/compiler/v3_core.erl
new file mode 100644
index 0000000000..b561182932
--- /dev/null
+++ b/lib/dialyzer/test/options1_tests_SUITE_data/src/compiler/v3_core.erl
@@ -0,0 +1,1320 @@
+%% ``The contents of this file are subject to the Erlang Public License,
+%% Version 1.1, (the "License"); you may not use this file except in
+%% compliance with the License. You should have received a copy of the
+%% Erlang Public License along with this software. If not, it can be
+%% retrieved via the world wide web at http://www.erlang.org/.
+%%
+%% Software distributed under the License is distributed on an "AS IS"
+%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
+%% the License for the specific language governing rights and limitations
+%% under the License.
+%%
+%% The Initial Developer of the Original Code is Ericsson Utvecklings AB.
+%% Portions created by Ericsson are Copyright 1999, Ericsson Utvecklings
+%% AB. All Rights Reserved.''
+%%
+%% $Id: v3_core.erl,v 1.1 2008/12/17 09:53:42 mikpe Exp $
+%%
+%% Purpose : Transform normal Erlang to Core Erlang
+
+%% At this stage all preprocessing has been done. All that is left are
+%% "pure" Erlang functions.
+%%
+%% Core transformation is done in three stages:
+%%
+%% 1. Flatten expressions into an internal core form without doing
+%% matching.
+%%
+%% 2. Step "forwards" over the icore code annotating each "top-level"
+%% thing with variable usage. Detect bound variables in matching
+%% and replace with explicit guard test. Annotate "internal-core"
+%% expressions with variables they use and create. Convert matches
+%% to cases when not pure assignments.
+%%
+%% 3. Step "backwards" over icore code using variable usage
+%% annotations to change implicit exported variables to explicit
+%% returns.
+%%
+%% To ensure the evaluation order we ensure that all arguments are
+%% safe. A "safe" is basically a core_lib simple with VERY restricted
+%% binaries.
+%%
+%% We have to be very careful with matches as these create variables.
+%% While we try not to flatten things more than necessary we must make
+%% sure that all matches are at the top level. For this we use the
+%% type "novars" which are non-match expressions. Cases and receives
+%% can also create problems due to exports variables so they are not
+%% "novars" either. I.e. a novars will not export variables.
+%%
+%% Annotations in the #iset, #iletrec, and all other internal records
+%% is kept in a record, #a, not in a list as in proper core. This is
+%% easier and faster and creates no problems as we have complete control
+%% over all annotations.
+%%
+%% On output, the annotation for most Core Erlang terms will contain
+%% the source line number. A few terms will be marked with the atom
+%% atom 'compiler_generated', to indicate that the compiler has generated
+%% them and that no warning should be generated if they are optimized
+%% away.
+%%
+%%
+%% In this translation:
+%%
+%% call ops are safes
+%% call arguments are safes
+%% match arguments are novars
+%% case arguments are novars
+%% receive timeouts are novars
+%% let/set arguments are expressions
+%% fun is not a safe
+
+-module(v3_core).
+
+-export([module/2,format_error/1]).
+
+-import(lists, [map/2,foldl/3,foldr/3,mapfoldl/3,splitwith/2]).
+-import(ordsets, [add_element/2,del_element/2,is_element/2,
+ union/1,union/2,intersection/2,subtract/2]).
+
+-include("core_parse.hrl").
+
+-record(a, {us=[],ns=[],anno=[]}). %Internal annotation
+
+%% Internal core expressions and help functions.
+%% N.B. annotations fields in place as normal Core expressions.
+
+-record(iset, {anno=#a{},var,arg}).
+-record(iletrec, {anno=#a{},defs,body}).
+-record(imatch, {anno=#a{},pat,guard=[],arg,fc}).
+-record(icase, {anno=#a{},args,clauses,fc}).
+-record(iclause, {anno=#a{},pats,pguard=[],guard,body}).
+-record(ifun, {anno=#a{},id,vars,clauses,fc}).
+-record(iapply, {anno=#a{},op,args}).
+-record(icall, {anno=#a{},module,name,args}).
+-record(iprimop, {anno=#a{},name,args}).
+-record(itry, {anno=#a{},args,vars,body,evars,handler}).
+-record(icatch, {anno=#a{},body}).
+-record(ireceive1, {anno=#a{},clauses}).
+-record(ireceive2, {anno=#a{},clauses,timeout,action}).
+-record(iprotect, {anno=#a{},body}).
+-record(ibinary, {anno=#a{},segments}). %Not used in patterns.
+
+-record(core, {vcount=0, %Variable counter
+ fcount=0, %Function counter
+ ws=[]}). %Warnings.
+
+module({Mod,Exp,Forms}, _Opts) ->
+ Cexp = map(fun ({N,A}) -> #c_fname{id=N,arity=A} end, Exp),
+ {Kfs,As,Ws} = foldr(fun form/2, {[],[],[]}, Forms),
+ {ok,#c_module{name=#c_atom{val=Mod},exports=Cexp,attrs=As,defs=Kfs},Ws}.
+
+form({function,_,_,_,_}=F0, {Fs,As,Ws0}) ->
+ {F,Ws} = function(F0, Ws0),
+ {[F|Fs],As,Ws};
+form({attribute,_,_,_}=F, {Fs,As,Ws}) ->
+ {Fs,[attribute(F)|As],Ws}.
+
+attribute({attribute,_,Name,Val}) ->
+ #c_def{name=core_lib:make_literal(Name),
+ val=core_lib:make_literal(Val)}.
+
+function({function,_,Name,Arity,Cs0}, Ws0) ->
+ %%ok = io:fwrite("~p - ", [{Name,Arity}]),
+ St0 = #core{vcount=0,ws=Ws0},
+ {B0,St1} = body(Cs0, Arity, St0),
+ %%ok = io:fwrite("1", []),
+ %%ok = io:fwrite("~w:~p~n", [?LINE,B0]),
+ {B1,St2} = ubody(B0, St1),
+ %%ok = io:fwrite("2", []),
+ %%ok = io:fwrite("~w:~p~n", [?LINE,B1]),
+ {B2,#core{ws=Ws}} = cbody(B1, St2),
+ %%ok = io:fwrite("3~n", []),
+ {#c_def{name=#c_fname{id=Name,arity=Arity},val=B2},Ws}.
+
+body(Cs0, Arity, St0) ->
+ Anno = [element(2, hd(Cs0))],
+ {Args,St1} = new_vars(Anno, Arity, St0),
+ {Cs1,St2} = clauses(Cs0, St1),
+ {Ps,St3} = new_vars(Arity, St2), %Need new variables here
+ Fc = fail_clause(Ps, #c_tuple{es=[#c_atom{val=function_clause}|Ps]}),
+ {#ifun{anno=#a{anno=Anno},id=[],vars=Args,clauses=Cs1,fc=Fc},St3}.
+
+%% clause(Clause, State) -> {Cclause,State} | noclause.
+%% clauses([Clause], State) -> {[Cclause],State}.
+%% Convert clauses. Trap bad pattern aliases and remove clause from
+%% clause list.
+
+clauses([C0|Cs0], St0) ->
+ case clause(C0, St0) of
+ {noclause,St} -> clauses(Cs0, St);
+ {C,St1} ->
+ {Cs,St2} = clauses(Cs0, St1),
+ {[C|Cs],St2}
+ end;
+clauses([], St) -> {[],St}.
+
+clause({clause,Lc,H0,G0,B0}, St0) ->
+ case catch head(H0) of
+ {'EXIT',_}=Exit -> exit(Exit); %Propagate error
+ nomatch ->
+ St = add_warning(Lc, nomatch, St0),
+ {noclause,St}; %Bad pattern
+ H1 ->
+ {G1,St1} = guard(G0, St0),
+ {B1,St2} = exprs(B0, St1),
+ {#iclause{anno=#a{anno=[Lc]},pats=H1,guard=G1,body=B1},St2}
+ end.
+
+%% head([P]) -> [P].
+
+head(Ps) -> pattern_list(Ps).
+
+%% guard([Expr], State) -> {[Cexpr],State}.
+%% Build an explict and/or tree of guard alternatives, then traverse
+%% top-level and/or tree and "protect" inner tests.
+
+guard([], St) -> {[],St};
+guard(Gs0, St) ->
+ Gs = foldr(fun (Gt0, Rhs) ->
+ Gt1 = guard_tests(Gt0),
+ L = element(2, Gt1),
+ {op,L,'or',Gt1,Rhs}
+ end, guard_tests(last(Gs0)), first(Gs0)),
+ gexpr_top(Gs, St).
+
+guard_tests([]) -> [];
+guard_tests(Gs) ->
+ L = element(2, hd(Gs)),
+ {protect,L,foldr(fun (G, Rhs) -> {op,L,'and',G,Rhs} end, last(Gs), first(Gs))}.
+
+%% gexpr_top(Expr, State) -> {Cexpr,State}.
+%% Generate an internal core expression of a guard test. Explicitly
+%% handle outer boolean expressions and "protect" inner tests in a
+%% reasonably smart way.
+
+gexpr_top(E0, St0) ->
+ {E1,Eps0,Bools,St1} = gexpr(E0, [], St0),
+ {E,Eps,St} = force_booleans(Bools, E1, Eps0, St1),
+ {Eps++[E],St}.
+
+%% gexpr(Expr, Bools, State) -> {Cexpr,[PreExp],Bools,State}.
+%% Generate an internal core expression of a guard test.
+
+gexpr({protect,Line,Arg}, Bools0, St0) ->
+ case gexpr(Arg, [], St0) of
+ {E0,[],Bools,St1} ->
+ {E,Eps,St} = force_booleans(Bools, E0, [], St1),
+ {E,Eps,Bools0,St};
+ {E0,Eps0,Bools,St1} ->
+ {E,Eps,St} = force_booleans(Bools, E0, Eps0, St1),
+ {#iprotect{anno=#a{anno=[Line]},body=Eps++[E]},[],Bools0,St}
+ end;
+gexpr({op,Line,Op,L,R}=Call, Bools0, St0) ->
+ case erl_internal:bool_op(Op, 2) of
+ true ->
+ {Le,Lps,Bools1,St1} = gexpr(L, Bools0, St0),
+ {Ll,Llps,St2} = force_safe(Le, St1),
+ {Re,Rps,Bools,St3} = gexpr(R, Bools1, St2),
+ {Rl,Rlps,St4} = force_safe(Re, St3),
+ Anno = [Line],
+ {#icall{anno=#a{anno=Anno}, %Must have an #a{}
+ module=#c_atom{anno=Anno,val=erlang},name=#c_atom{anno=Anno,val=Op},
+ args=[Ll,Rl]},Lps ++ Llps ++ Rps ++ Rlps,Bools,St4};
+ false ->
+ gexpr_test(Call, Bools0, St0)
+ end;
+gexpr({op,Line,Op,A}=Call, Bools0, St0) ->
+ case erl_internal:bool_op(Op, 1) of
+ true ->
+ {Ae,Aps,Bools,St1} = gexpr(A, Bools0, St0),
+ {Al,Alps,St2} = force_safe(Ae, St1),
+ Anno = [Line],
+ {#icall{anno=#a{anno=Anno}, %Must have an #a{}
+ module=#c_atom{anno=Anno,val=erlang},name=#c_atom{anno=Anno,val=Op},
+ args=[Al]},Aps ++ Alps,Bools,St2};
+ false ->
+ gexpr_test(Call, Bools0, St0)
+ end;
+gexpr(E0, Bools, St0) ->
+ gexpr_test(E0, Bools, St0).
+
+%% gexpr_test(Expr, Bools, State) -> {Cexpr,[PreExp],Bools,State}.
+%% Generate a guard test. At this stage we must be sure that we have
+%% a proper boolean value here so wrap things with an true test if we
+%% don't know, i.e. if it is not a comparison or a type test.
+
+gexpr_test({atom,L,true}, Bools, St0) ->
+ {#c_atom{anno=[L],val=true},[],Bools,St0};
+gexpr_test({atom,L,false}, Bools, St0) ->
+ {#c_atom{anno=[L],val=false},[],Bools,St0};
+gexpr_test(E0, Bools0, St0) ->
+ {E1,Eps0,St1} = expr(E0, St0),
+ %% Generate "top-level" test and argument calls.
+ case E1 of
+ #icall{anno=Anno,module=#c_atom{val=erlang},name=#c_atom{val=N},args=As} ->
+ Ar = length(As),
+ case erl_internal:type_test(N, Ar) orelse
+ erl_internal:comp_op(N, Ar) orelse
+ (N == internal_is_record andalso Ar == 3) of
+ true -> {E1,Eps0,Bools0,St1};
+ false ->
+ Lanno = Anno#a.anno,
+ {New,St2} = new_var(Lanno, St1),
+ Bools = [New|Bools0],
+ {#icall{anno=Anno, %Must have an #a{}
+ module=#c_atom{anno=Lanno,val=erlang},
+ name=#c_atom{anno=Lanno,val='=:='},
+ args=[New,#c_atom{anno=Lanno,val=true}]},
+ Eps0 ++ [#iset{anno=Anno,var=New,arg=E1}],Bools,St2}
+ end;
+ _ ->
+ Anno = get_ianno(E1),
+ Lanno = get_lineno_anno(E1),
+ case core_lib:is_simple(E1) of
+ true ->
+ Bools = [E1|Bools0],
+ {#icall{anno=Anno, %Must have an #a{}
+ module=#c_atom{anno=Lanno,val=erlang},
+ name=#c_atom{anno=Lanno,val='=:='},
+ args=[E1,#c_atom{anno=Lanno,val=true}]},Eps0,Bools,St1};
+ false ->
+ {New,St2} = new_var(Lanno, St1),
+ Bools = [New|Bools0],
+ {#icall{anno=Anno, %Must have an #a{}
+ module=#c_atom{anno=Lanno,val=erlang},
+ name=#c_atom{anno=Lanno,val='=:='},
+ args=[New,#c_atom{anno=Lanno,val=true}]},
+ Eps0 ++ [#iset{anno=Anno,var=New,arg=E1}],Bools,St2}
+ end
+ end.
+
+force_booleans([], E, Eps, St) ->
+ {E,Eps,St};
+force_booleans([V|Vs], E0, Eps0, St0) ->
+ {E1,Eps1,St1} = force_safe(E0, St0),
+ Lanno = element(2, V),
+ Anno = #a{anno=Lanno},
+ Call = #icall{anno=Anno,module=#c_atom{anno=Lanno,val=erlang},
+ name=#c_atom{anno=Lanno,val=is_boolean},
+ args=[V]},
+ {New,St} = new_var(Lanno, St1),
+ Iset = #iset{anno=Anno,var=New,arg=Call},
+ Eps = Eps0 ++ Eps1 ++ [Iset],
+ E = #icall{anno=Anno,
+ module=#c_atom{anno=Lanno,val=erlang},name=#c_atom{anno=Lanno,val='and'},
+ args=[E1,New]},
+ force_booleans(Vs, E, Eps, St).
+
+%% exprs([Expr], State) -> {[Cexpr],State}.
+%% Flatten top-level exprs.
+
+exprs([E0|Es0], St0) ->
+ {E1,Eps,St1} = expr(E0, St0),
+ {Es1,St2} = exprs(Es0, St1),
+ {Eps ++ [E1] ++ Es1,St2};
+exprs([], St) -> {[],St}.
+
+%% expr(Expr, State) -> {Cexpr,[PreExp],State}.
+%% Generate an internal core expression.
+
+expr({var,L,V}, St) -> {#c_var{anno=[L],name=V},[],St};
+expr({char,L,C}, St) -> {#c_char{anno=[L],val=C},[],St};
+expr({integer,L,I}, St) -> {#c_int{anno=[L],val=I},[],St};
+expr({float,L,F}, St) -> {#c_float{anno=[L],val=F},[],St};
+expr({atom,L,A}, St) -> {#c_atom{anno=[L],val=A},[],St};
+expr({nil,L}, St) -> {#c_nil{anno=[L]},[],St};
+expr({string,L,S}, St) -> {#c_string{anno=[L],val=S},[],St};
+expr({cons,L,H0,T0}, St0) ->
+ {H1,Hps,St1} = safe(H0, St0),
+ {T1,Tps,St2} = safe(T0, St1),
+ {#c_cons{anno=[L],hd=H1,tl=T1},Hps ++ Tps,St2};
+expr({lc,L,E,Qs}, St) ->
+ lc_tq(L, E, Qs, {nil,L}, St);
+expr({tuple,L,Es0}, St0) ->
+ {Es1,Eps,St1} = safe_list(Es0, St0),
+ {#c_tuple{anno=[L],es=Es1},Eps,St1};
+expr({bin,L,Es0}, St0) ->
+ {Es1,Eps,St1} = expr_bin(Es0, St0),
+ {#ibinary{anno=#a{anno=[L]},segments=Es1},Eps,St1};
+expr({block,_,Es0}, St0) ->
+ %% Inline the block directly.
+ {Es1,St1} = exprs(first(Es0), St0),
+ {E1,Eps,St2} = expr(last(Es0), St1),
+ {E1,Es1 ++ Eps,St2};
+expr({'if',L,Cs0}, St0) ->
+ {Cs1,St1} = clauses(Cs0, St0),
+ Fc = fail_clause([], #c_atom{val=if_clause}),
+ {#icase{anno=#a{anno=[L]},args=[],clauses=Cs1,fc=Fc},[],St1};
+expr({'case',L,E0,Cs0}, St0) ->
+ {E1,Eps,St1} = novars(E0, St0),
+ {Cs1,St2} = clauses(Cs0, St1),
+ {Fpat,St3} = new_var(St2),
+ Fc = fail_clause([Fpat], #c_tuple{es=[#c_atom{val=case_clause},Fpat]}),
+ {#icase{anno=#a{anno=[L]},args=[E1],clauses=Cs1,fc=Fc},Eps,St3};
+expr({'receive',L,Cs0}, St0) ->
+ {Cs1,St1} = clauses(Cs0, St0),
+ {#ireceive1{anno=#a{anno=[L]},clauses=Cs1}, [], St1};
+expr({'receive',L,Cs0,Te0,Tes0}, St0) ->
+ {Te1,Teps,St1} = novars(Te0, St0),
+ {Tes1,St2} = exprs(Tes0, St1),
+ {Cs1,St3} = clauses(Cs0, St2),
+ {#ireceive2{anno=#a{anno=[L]},
+ clauses=Cs1,timeout=Te1,action=Tes1},Teps,St3};
+expr({'try',L,Es0,[],Ecs,[]}, St0) ->
+ %% 'try ... catch ... end'
+ {Es1,St1} = exprs(Es0, St0),
+ {V,St2} = new_var(St1), %This name should be arbitrary
+ {Evs,Hs,St3} = try_exception(Ecs, St2),
+ {#itry{anno=#a{anno=[L]},args=Es1,vars=[V],body=[V],
+ evars=Evs,handler=Hs},
+ [],St3};
+expr({'try',L,Es0,Cs0,Ecs,[]}, St0) ->
+ %% 'try ... of ... catch ... end'
+ {Es1,St1} = exprs(Es0, St0),
+ {V,St2} = new_var(St1), %This name should be arbitrary
+ {Cs1,St3} = clauses(Cs0, St2),
+ {Fpat,St4} = new_var(St3),
+ Fc = fail_clause([Fpat], #c_tuple{es=[#c_atom{val=try_clause},Fpat]}),
+ {Evs,Hs,St5} = try_exception(Ecs, St4),
+ {#itry{anno=#a{anno=[L]},args=Es1,
+ vars=[V],body=[#icase{anno=#a{},args=[V],clauses=Cs1,fc=Fc}],
+ evars=Evs,handler=Hs},
+ [],St5};
+expr({'try',L,Es0,[],[],As0}, St0) ->
+ %% 'try ... after ... end'
+ {Es1,St1} = exprs(Es0, St0),
+ {As1,St2} = exprs(As0, St1),
+ {Evs,Hs,St3} = try_after(As1,St2),
+ {V,St4} = new_var(St3), % (must not exist in As1)
+ %% TODO: this duplicates the 'after'-code; should lift to function.
+ {#itry{anno=#a{anno=[L]},args=Es1,vars=[V],body=As1++[V],
+ evars=Evs,handler=Hs},
+ [],St4};
+expr({'try',L,Es,Cs,Ecs,As}, St0) ->
+ %% 'try ... [of ...] [catch ...] after ... end'
+ expr({'try',L,[{'try',L,Es,Cs,Ecs,[]}],[],[],As}, St0);
+expr({'catch',L,E0}, St0) ->
+ {E1,Eps,St1} = expr(E0, St0),
+ {#icatch{anno=#a{anno=[L]},body=Eps ++ [E1]},[],St1};
+expr({'fun',L,{function,F,A},{_,_,_}=Id}, St) ->
+ {#c_fname{anno=[L,{id,Id}],id=F,arity=A},[],St};
+expr({'fun',L,{clauses,Cs},Id}, St) ->
+ fun_tq(Id, Cs, L, St);
+expr({call,L0,{remote,_,{atom,_,erlang},{atom,_,is_record}},[_,_,_]=As}, St)
+ when L0 < 0 ->
+ %% Compiler-generated erlang:is_record/3 should be converted to
+ %% erlang:internal_is_record/3.
+ L = -L0,
+ expr({call,L,{remote,L,{atom,L,erlang},{atom,L,internal_is_record}},As}, St);
+expr({call,L,{remote,_,M,F},As0}, St0) ->
+ {[M1,F1|As1],Aps,St1} = safe_list([M,F|As0], St0),
+ {#icall{anno=#a{anno=[L]},module=M1,name=F1,args=As1},Aps,St1};
+expr({call,Lc,{atom,Lf,F},As0}, St0) ->
+ {As1,Aps,St1} = safe_list(As0, St0),
+ Op = #c_fname{anno=[Lf],id=F,arity=length(As1)},
+ {#iapply{anno=#a{anno=[Lc]},op=Op,args=As1},Aps,St1};
+expr({call,L,FunExp,As0}, St0) ->
+ {Fun,Fps,St1} = safe(FunExp, St0),
+ {As1,Aps,St2} = safe_list(As0, St1),
+ {#iapply{anno=#a{anno=[L]},op=Fun,args=As1},Fps ++ Aps,St2};
+expr({match,L,P0,E0}, St0) ->
+ %% First fold matches together to create aliases.
+ {P1,E1} = fold_match(E0, P0),
+ {E2,Eps,St1} = novars(E1, St0),
+ P2 = (catch pattern(P1)),
+ {Fpat,St2} = new_var(St1),
+ Fc = fail_clause([Fpat], #c_tuple{es=[#c_atom{val=badmatch},Fpat]}),
+ case P2 of
+ {'EXIT',_}=Exit -> exit(Exit); %Propagate error
+ nomatch ->
+ St = add_warning(L, nomatch, St2),
+ {#icase{anno=#a{anno=[L]},
+ args=[E2],clauses=[],fc=Fc},Eps,St};
+ _Other ->
+ {#imatch{anno=#a{anno=[L]},pat=P2,arg=E2,fc=Fc},Eps,St2}
+ end;
+expr({op,_,'++',{lc,Llc,E,Qs},L2}, St) ->
+ %% Optimise this here because of the list comprehension algorithm.
+ lc_tq(Llc, E, Qs, L2, St);
+expr({op,L,Op,A0}, St0) ->
+ {A1,Aps,St1} = safe(A0, St0),
+ LineAnno = [L],
+ {#icall{anno=#a{anno=LineAnno}, %Must have an #a{}
+ module=#c_atom{anno=LineAnno,val=erlang},
+ name=#c_atom{anno=LineAnno,val=Op},args=[A1]},Aps,St1};
+expr({op,L,Op,L0,R0}, St0) ->
+ {As,Aps,St1} = safe_list([L0,R0], St0),
+ LineAnno = [L],
+ {#icall{anno=#a{anno=LineAnno}, %Must have an #a{}
+ module=#c_atom{anno=LineAnno,val=erlang},
+ name=#c_atom{anno=LineAnno,val=Op},args=As},Aps,St1}.
+
+%% try_exception([ExcpClause], St) -> {[ExcpVar],Handler,St}.
+
+try_exception(Ecs0, St0) ->
+ %% Note that Tag is not needed for rethrow - it is already in Info.
+ {Evs,St1} = new_vars(3, St0), % Tag, Value, Info
+ {Ecs1,St2} = clauses(Ecs0, St1),
+ [_,Value,Info] = Evs,
+ Ec = #iclause{anno=#a{anno=[compiler_generated]},
+ pats=[#c_tuple{es=Evs}],guard=[#c_atom{val=true}],
+ body=[#iprimop{anno=#a{}, %Must have an #a{}
+ name=#c_atom{val=raise},
+ args=[Info,Value]}]},
+ Hs = [#icase{anno=#a{},args=[#c_tuple{es=Evs}],clauses=Ecs1,fc=Ec}],
+ {Evs,Hs,St2}.
+
+try_after(As, St0) ->
+ %% See above.
+ {Evs,St1} = new_vars(3, St0), % Tag, Value, Info
+ [_,Value,Info] = Evs,
+ B = As ++ [#iprimop{anno=#a{}, %Must have an #a{}
+ name=#c_atom{val=raise},
+ args=[Info,Value]}],
+ Ec = #iclause{anno=#a{anno=[compiler_generated]},
+ pats=[#c_tuple{es=Evs}],guard=[#c_atom{val=true}],
+ body=B},
+ Hs = [#icase{anno=#a{},args=[#c_tuple{es=Evs}],clauses=[],fc=Ec}],
+ {Evs,Hs,St1}.
+
+%% expr_bin([ArgExpr], St) -> {[Arg],[PreExpr],St}.
+%% Flatten the arguments of a bin. Do this straight left to right!
+
+expr_bin(Es, St) ->
+ foldr(fun (E, {Ces,Esp,St0}) ->
+ {Ce,Ep,St1} = bitstr(E, St0),
+ {[Ce|Ces],Ep ++ Esp,St1}
+ end, {[],[],St}, Es).
+
+bitstr({bin_element,_,E0,Size0,[Type,{unit,Unit}|Flags]}, St0) ->
+ {E1,Eps,St1} = safe(E0, St0),
+ {Size1,Eps2,St2} = safe(Size0, St1),
+ {#c_bitstr{val=E1,size=Size1,
+ unit=core_lib:make_literal(Unit),
+ type=core_lib:make_literal(Type),
+ flags=core_lib:make_literal(Flags)},
+ Eps ++ Eps2,St2}.
+
+%% fun_tq(Id, [Clauses], Line, State) -> {Fun,[PreExp],State}.
+
+fun_tq(Id, Cs0, L, St0) ->
+ {Cs1,St1} = clauses(Cs0, St0),
+ Arity = length((hd(Cs1))#iclause.pats),
+ {Args,St2} = new_vars(Arity, St1),
+ {Ps,St3} = new_vars(Arity, St2), %Need new variables here
+ Fc = fail_clause(Ps, #c_tuple{es=[#c_atom{val=function_clause}|Ps]}),
+ Fun = #ifun{anno=#a{anno=[L]},
+ id=[{id,Id}], %We KNOW!
+ vars=Args,clauses=Cs1,fc=Fc},
+ {Fun,[],St3}.
+
+%% lc_tq(Line, Exp, [Qualifier], More, State) -> {LetRec,[PreExp],State}.
+%% This TQ from Simon PJ pp 127-138.
+%% This gets a bit messy as we must transform all directly here. We
+%% recognise guard tests and try to fold them together and join to a
+%% preceding generators, this should give us better and more compact
+%% code.
+%% More could be transformed before calling lc_tq.
+
+lc_tq(Line, E, [{generate,Lg,P,G}|Qs0], More, St0) ->
+ {Gs,Qs1} = splitwith(fun is_guard_test/1, Qs0),
+ {Name,St1} = new_fun_name("lc", St0),
+ {Head,St2} = new_var(St1),
+ {Tname,St3} = new_var_name(St2),
+ LA = [Line],
+ LAnno = #a{anno=LA},
+ Tail = #c_var{anno=LA,name=Tname},
+ {Arg,St4} = new_var(St3),
+ NewMore = {call,Lg,{atom,Lg,Name},[{var,Lg,Tname}]},
+ {Guardc,St5} = lc_guard_tests(Gs, St4), %These are always flat!
+ {Lc,Lps,St6} = lc_tq(Line, E, Qs1, NewMore, St5),
+ {Mc,Mps,St7} = expr(More, St6),
+ {Nc,Nps,St8} = expr(NewMore, St7),
+ case catch pattern(P) of
+ {'EXIT',_}=Exit ->
+ St9 = St8,
+ Pc = nomatch,
+ exit(Exit); %Propagate error
+ nomatch ->
+ St9 = add_warning(Line, nomatch, St8),
+ Pc = nomatch;
+ Pc ->
+ St9 = St8
+ end,
+ {Gc,Gps,St10} = safe(G, St9), %Will be a function argument!
+ Fc = fail_clause([Arg], #c_tuple{anno=LA,
+ es=[#c_atom{val=function_clause},Arg]}),
+ Cs0 = [#iclause{anno=#a{anno=[compiler_generated|LA]},
+ pats=[#c_cons{anno=LA,hd=Head,tl=Tail}],
+ guard=[],
+ body=Nps ++ [Nc]},
+ #iclause{anno=LAnno,
+ pats=[#c_nil{anno=LA}],guard=[],
+ body=Mps ++ [Mc]}],
+ Cs = case Pc of
+ nomatch -> Cs0;
+ _ ->
+ [#iclause{anno=LAnno,
+ pats=[#c_cons{anno=LA,hd=Pc,tl=Tail}],
+ guard=Guardc,
+ body=Lps ++ [Lc]}|Cs0]
+ end,
+ Fun = #ifun{anno=LAnno,id=[],vars=[Arg],clauses=Cs,fc=Fc},
+ {#iletrec{anno=LAnno,defs=[{Name,Fun}],
+ body=Gps ++ [#iapply{anno=LAnno,
+ op=#c_fname{anno=LA,id=Name,arity=1},
+ args=[Gc]}]},
+ [],St10};
+lc_tq(Line, E, [Fil0|Qs0], More, St0) ->
+ %% Special case sequences guard tests.
+ LA = [Line],
+ LAnno = #a{anno=LA},
+ case is_guard_test(Fil0) of
+ true ->
+ {Gs0,Qs1} = splitwith(fun is_guard_test/1, Qs0),
+ {Lc,Lps,St1} = lc_tq(Line, E, Qs1, More, St0),
+ {Mc,Mps,St2} = expr(More, St1),
+ {Gs,St3} = lc_guard_tests([Fil0|Gs0], St2), %These are always flat!
+ {#icase{anno=LAnno,
+ args=[],
+ clauses=[#iclause{anno=LAnno,pats=[],
+ guard=Gs,body=Lps ++ [Lc]}],
+ fc=#iclause{anno=LAnno,pats=[],guard=[],body=Mps ++ [Mc]}},
+ [],St3};
+ false ->
+ {Lc,Lps,St1} = lc_tq(Line, E, Qs0, More, St0),
+ {Mc,Mps,St2} = expr(More, St1),
+ {Fpat,St3} = new_var(St2),
+ Fc = fail_clause([Fpat], #c_tuple{es=[#c_atom{val=case_clause},Fpat]}),
+ %% Do a novars little optimisation here.
+ case Fil0 of
+ {op,_,'not',Fil1} ->
+ {Filc,Fps,St4} = novars(Fil1, St3),
+ {#icase{anno=LAnno,
+ args=[Filc],
+ clauses=[#iclause{anno=LAnno,
+ pats=[#c_atom{anno=LA,val=true}],
+ guard=[],
+ body=Mps ++ [Mc]},
+ #iclause{anno=LAnno,
+ pats=[#c_atom{anno=LA,val=false}],
+ guard=[],
+ body=Lps ++ [Lc]}],
+ fc=Fc},
+ Fps,St4};
+ _Other ->
+ {Filc,Fps,St4} = novars(Fil0, St3),
+ {#icase{anno=LAnno,
+ args=[Filc],
+ clauses=[#iclause{anno=LAnno,
+ pats=[#c_atom{anno=LA,val=true}],
+ guard=[],
+ body=Lps ++ [Lc]},
+ #iclause{anno=LAnno,
+ pats=[#c_atom{anno=LA,val=false}],
+ guard=[],
+ body=Mps ++ [Mc]}],
+ fc=Fc},
+ Fps,St4}
+ end
+ end;
+lc_tq(Line, E, [], More, St) ->
+ expr({cons,Line,E,More}, St).
+
+lc_guard_tests([], St) -> {[],St};
+lc_guard_tests(Gs0, St) ->
+ Gs = guard_tests(Gs0),
+ gexpr_top(Gs, St).
+
+%% is_guard_test(Expression) -> true | false.
+%% Test if a general expression is a guard test. Use erl_lint here
+%% as it now allows sys_pre_expand transformed source.
+
+is_guard_test(E) -> erl_lint:is_guard_test(E).
+
+%% novars(Expr, State) -> {Novars,[PreExpr],State}.
+%% Generate a novars expression, basically a call or a safe. At this
+%% level we do not need to do a deep check.
+
+novars(E0, St0) ->
+ {E1,Eps,St1} = expr(E0, St0),
+ {Se,Sps,St2} = force_novars(E1, St1),
+ {Se,Eps ++ Sps,St2}.
+
+force_novars(#iapply{}=App, St) -> {App,[],St};
+force_novars(#icall{}=Call, St) -> {Call,[],St};
+force_novars(#iprimop{}=Prim, St) -> {Prim,[],St};
+force_novars(#ifun{}=Fun, St) -> {Fun,[],St}; %These are novars too
+force_novars(#ibinary{}=Bin, St) -> {Bin,[],St};
+force_novars(Ce, St) ->
+ force_safe(Ce, St).
+
+%% safe(Expr, State) -> {Safe,[PreExpr],State}.
+%% Generate an internal safe expression. These are simples without
+%% binaries which can fail. At this level we do not need to do a
+%% deep check. Must do special things with matches here.
+
+safe(E0, St0) ->
+ {E1,Eps,St1} = expr(E0, St0),
+ {Se,Sps,St2} = force_safe(E1, St1),
+ {Se,Eps ++ Sps,St2}.
+
+safe_list(Es, St) ->
+ foldr(fun (E, {Ces,Esp,St0}) ->
+ {Ce,Ep,St1} = safe(E, St0),
+ {[Ce|Ces],Ep ++ Esp,St1}
+ end, {[],[],St}, Es).
+
+force_safe(#imatch{anno=Anno,pat=P,arg=E,fc=Fc}, St0) ->
+ {Le,Lps,St1} = force_safe(E, St0),
+ {Le,Lps ++ [#imatch{anno=Anno,pat=P,arg=Le,fc=Fc}],St1};
+force_safe(Ce, St0) ->
+ case is_safe(Ce) of
+ true -> {Ce,[],St0};
+ false ->
+ {V,St1} = new_var(St0),
+ {V,[#iset{var=V,arg=Ce}],St1}
+ end.
+
+is_safe(#c_cons{}) -> true;
+is_safe(#c_tuple{}) -> true;
+is_safe(#c_var{}) -> true;
+is_safe(E) -> core_lib:is_atomic(E).
+
+%%% %% variable(Expr, State) -> {Variable,[PreExpr],State}.
+%%% %% force_variable(Expr, State) -> {Variable,[PreExpr],State}.
+%%% %% Generate a variable.
+
+%%% variable(E0, St0) ->
+%%% {E1,Eps,St1} = expr(E0, St0),
+%%% {V,Vps,St2} = force_variable(E1, St1),
+%%% {V,Eps ++ Vps,St2}.
+
+%%% force_variable(#c_var{}=Var, St) -> {Var,[],St};
+%%% force_variable(Ce, St0) ->
+%%% {V,St1} = new_var(St0),
+%%% {V,[#iset{var=V,arg=Ce}],St1}.
+
+%%% %% atomic(Expr, State) -> {Atomic,[PreExpr],State}.
+%%% %% force_atomic(Expr, State) -> {Atomic,[PreExpr],State}.
+
+%%% atomic(E0, St0) ->
+%%% {E1,Eps,St1} = expr(E0, St0),
+%%% {A,Aps,St2} = force_atomic(E1, St1),
+%%% {A,Eps ++ Aps,St2}.
+
+%%% force_atomic(Ce, St0) ->
+%%% case core_lib:is_atomic(Ce) of
+%%% true -> {Ce,[],St0};
+%%% false ->
+%%% {V,St1} = new_var(St0),
+%%% {V,[#iset{var=V,arg=Ce}],St1}
+%%% end.
+
+%% fold_match(MatchExpr, Pat) -> {MatchPat,Expr}.
+%% Fold nested matches into one match with aliased patterns.
+
+fold_match({match,L,P0,E0}, P) ->
+ {P1,E1} = fold_match(E0, P),
+ {{match,L,P0,P1},E1};
+fold_match(E, P) -> {P,E}.
+
+%% pattern(Pattern) -> CorePat.
+%% Transform a pattern by removing line numbers. We also normalise
+%% aliases in patterns to standard form, {alias,Pat,[Var]}.
+
+pattern({var,L,V}) -> #c_var{anno=[L],name=V};
+pattern({char,L,C}) -> #c_char{anno=[L],val=C};
+pattern({integer,L,I}) -> #c_int{anno=[L],val=I};
+pattern({float,L,F}) -> #c_float{anno=[L],val=F};
+pattern({atom,L,A}) -> #c_atom{anno=[L],val=A};
+pattern({string,L,S}) -> #c_string{anno=[L],val=S};
+pattern({nil,L}) -> #c_nil{anno=[L]};
+pattern({cons,L,H,T}) ->
+ #c_cons{anno=[L],hd=pattern(H),tl=pattern(T)};
+pattern({tuple,L,Ps}) ->
+ #c_tuple{anno=[L],es=pattern_list(Ps)};
+pattern({bin,L,Ps}) ->
+ %% We don't create a #ibinary record here, since there is
+ %% no need to hold any used/new annoations in a pattern.
+ #c_binary{anno=[L],segments=pat_bin(Ps)};
+pattern({match,_,P1,P2}) ->
+ pat_alias(pattern(P1), pattern(P2)).
+
+%% bin_pattern_list([BinElement]) -> [BinSeg].
+
+pat_bin(Ps) -> map(fun pat_segment/1, Ps).
+
+pat_segment({bin_element,_,Term,Size,[Type,{unit,Unit}|Flags]}) ->
+ #c_bitstr{val=pattern(Term),size=pattern(Size),
+ unit=core_lib:make_literal(Unit),
+ type=core_lib:make_literal(Type),
+ flags=core_lib:make_literal(Flags)}.
+
+%% pat_alias(CorePat, CorePat) -> AliasPat.
+%% Normalise aliases. Trap bad aliases by throwing 'nomatch'.
+
+pat_alias(#c_var{name=V1}, P2) -> #c_alias{var=#c_var{name=V1},pat=P2};
+pat_alias(P1, #c_var{name=V2}) -> #c_alias{var=#c_var{name=V2},pat=P1};
+pat_alias(#c_cons{}=Cons, #c_string{anno=A,val=[H|T]}=S) ->
+ pat_alias(Cons, #c_cons{anno=A,hd=#c_char{anno=A,val=H},
+ tl=S#c_string{val=T}});
+pat_alias(#c_string{anno=A,val=[H|T]}=S, #c_cons{}=Cons) ->
+ pat_alias(#c_cons{anno=A,hd=#c_char{anno=A,val=H},
+ tl=S#c_string{val=T}}, Cons);
+pat_alias(#c_nil{}=Nil, #c_string{val=[]}) ->
+ Nil;
+pat_alias(#c_string{val=[]}, #c_nil{}=Nil) ->
+ Nil;
+pat_alias(#c_cons{anno=A,hd=H1,tl=T1}, #c_cons{hd=H2,tl=T2}) ->
+ #c_cons{anno=A,hd=pat_alias(H1, H2),tl=pat_alias(T1, T2)};
+pat_alias(#c_tuple{es=Es1}, #c_tuple{es=Es2}) ->
+ #c_tuple{es=pat_alias_list(Es1, Es2)};
+pat_alias(#c_char{val=C}=Char, #c_int{val=C}) ->
+ Char;
+pat_alias(#c_int{val=C}, #c_char{val=C}=Char) ->
+ Char;
+pat_alias(#c_alias{var=V1,pat=P1},
+ #c_alias{var=V2,pat=P2}) ->
+ if V1 == V2 -> pat_alias(P1, P2);
+ true -> #c_alias{var=V1,pat=#c_alias{var=V2,pat=pat_alias(P1, P2)}}
+ end;
+pat_alias(#c_alias{var=V1,pat=P1}, P2) ->
+ #c_alias{var=V1,pat=pat_alias(P1, P2)};
+pat_alias(P1, #c_alias{var=V2,pat=P2}) ->
+ #c_alias{var=V2,pat=pat_alias(P1, P2)};
+pat_alias(P, P) -> P;
+pat_alias(_, _) -> throw(nomatch).
+
+%% pat_alias_list([A1], [A2]) -> [A].
+
+pat_alias_list([A1|A1s], [A2|A2s]) ->
+ [pat_alias(A1, A2)|pat_alias_list(A1s, A2s)];
+pat_alias_list([], []) -> [];
+pat_alias_list(_, _) -> throw(nomatch).
+
+%% pattern_list([P]) -> [P].
+
+pattern_list(Ps) -> map(fun pattern/1, Ps).
+
+%% first([A]) -> [A].
+%% last([A]) -> A.
+
+first([_]) -> [];
+first([H|T]) -> [H|first(T)].
+
+last([L]) -> L;
+last([_|T]) -> last(T).
+
+%% make_vars([Name]) -> [{Var,Name}].
+
+make_vars(Vs) -> [ #c_var{name=V} || V <- Vs ].
+
+%% new_fun_name(Type, State) -> {FunName,State}.
+
+new_fun_name(Type, #core{fcount=C}=St) ->
+ {list_to_atom(Type ++ "$^" ++ integer_to_list(C)),St#core{fcount=C+1}}.
+
+%% new_var_name(State) -> {VarName,State}.
+
+new_var_name(#core{vcount=C}=St) ->
+ {list_to_atom("cor" ++ integer_to_list(C)),St#core{vcount=C + 1}}.
+
+%% new_var(State) -> {{var,Name},State}.
+%% new_var(LineAnno, State) -> {{var,Name},State}.
+
+new_var(St) ->
+ new_var([], St).
+
+new_var(Anno, St0) ->
+ {New,St} = new_var_name(St0),
+ {#c_var{anno=Anno,name=New},St}.
+
+%% new_vars(Count, State) -> {[Var],State}.
+%% new_vars(Anno, Count, State) -> {[Var],State}.
+%% Make Count new variables.
+
+new_vars(N, St) -> new_vars_1(N, [], St, []).
+new_vars(Anno, N, St) -> new_vars_1(N, Anno, St, []).
+
+new_vars_1(N, Anno, St0, Vs) when N > 0 ->
+ {V,St1} = new_var(Anno, St0),
+ new_vars_1(N-1, Anno, St1, [V|Vs]);
+new_vars_1(0, _, St, Vs) -> {Vs,St}.
+
+fail_clause(Pats, A) ->
+ #iclause{anno=#a{anno=[compiler_generated]},
+ pats=Pats,guard=[],
+ body=[#iprimop{anno=#a{},name=#c_atom{val=match_fail},args=[A]}]}.
+
+ubody(B, St) -> uexpr(B, [], St).
+
+%% uclauses([Lclause], [KnownVar], State) -> {[Lclause],State}.
+
+uclauses(Lcs, Ks, St0) ->
+ mapfoldl(fun (Lc, St) -> uclause(Lc, Ks, St) end, St0, Lcs).
+
+%% uclause(Lclause, [KnownVar], State) -> {Lclause,State}.
+
+uclause(Cl0, Ks, St0) ->
+ {Cl1,_Pvs,Used,New,St1} = uclause(Cl0, Ks, Ks, St0),
+ A0 = get_ianno(Cl1),
+ A = A0#a{us=Used,ns=New},
+ {Cl1#iclause{anno=A},St1}.
+
+uclause(#iclause{anno=Anno,pats=Ps0,guard=G0,body=B0}, Pks, Ks0, St0) ->
+ {Ps1,Pg,Pvs,Pus,St1} = upattern_list(Ps0, Pks, St0),
+ Pu = union(Pus, intersection(Pvs, Ks0)),
+ Pn = subtract(Pvs, Pu),
+ Ks1 = union(Pn, Ks0),
+ {G1,St2} = uguard(Pg, G0, Ks1, St1),
+ Gu = used_in_any(G1),
+ Gn = new_in_any(G1),
+ Ks2 = union(Gn, Ks1),
+ {B1,St3} = uexprs(B0, Ks2, St2),
+ Used = intersection(union([Pu,Gu,used_in_any(B1)]), Ks0),
+ New = union([Pn,Gn,new_in_any(B1)]),
+ {#iclause{anno=Anno,pats=Ps1,guard=G1,body=B1},Pvs,Used,New,St3}.
+
+%% uguard([Test], [Kexpr], [KnownVar], State) -> {[Kexpr],State}.
+%% Build a guard expression list by folding in the equality tests.
+
+uguard([], [], _, St) -> {[],St};
+uguard(Pg, [], Ks, St) ->
+ %% No guard, so fold together equality tests.
+ uguard(first(Pg), [last(Pg)], Ks, St);
+uguard(Pg, Gs0, Ks, St0) ->
+ %% Gs0 must contain at least one element here.
+ {Gs3,St5} = foldr(fun (T, {Gs1,St1}) ->
+ {L,St2} = new_var(St1),
+ {R,St3} = new_var(St2),
+ {[#iset{var=L,arg=T}] ++ first(Gs1) ++
+ [#iset{var=R,arg=last(Gs1)},
+ #icall{anno=#a{}, %Must have an #a{}
+ module=#c_atom{val=erlang},
+ name=#c_atom{val='and'},
+ args=[L,R]}],
+ St3}
+ end, {Gs0,St0}, Pg),
+ %%ok = io:fwrite("core ~w: ~p~n", [?LINE,Gs3]),
+ uexprs(Gs3, Ks, St5).
+
+%% uexprs([Kexpr], [KnownVar], State) -> {[Kexpr],State}.
+
+uexprs([#imatch{anno=A,pat=P0,arg=Arg,fc=Fc}|Les], Ks, St0) ->
+ %% Optimise for simple set of unbound variable.
+ case upattern(P0, Ks, St0) of
+ {#c_var{},[],_Pvs,_Pus,_} ->
+ %% Throw our work away and just set to iset.
+ uexprs([#iset{var=P0,arg=Arg}|Les], Ks, St0);
+ _Other ->
+ %% Throw our work away and set to icase.
+ if
+ Les == [] ->
+ %% Need to explicitly return match "value", make
+ %% safe for efficiency.
+ {La,Lps,St1} = force_safe(Arg, St0),
+ Mc = #iclause{anno=A,pats=[P0],guard=[],body=[La]},
+ uexprs(Lps ++ [#icase{anno=A,
+ args=[La],clauses=[Mc],fc=Fc}], Ks, St1);
+ true ->
+ Mc = #iclause{anno=A,pats=[P0],guard=[],body=Les},
+ uexprs([#icase{anno=A,args=[Arg],
+ clauses=[Mc],fc=Fc}], Ks, St0)
+ end
+ end;
+uexprs([Le0|Les0], Ks, St0) ->
+ {Le1,St1} = uexpr(Le0, Ks, St0),
+ {Les1,St2} = uexprs(Les0, union((core_lib:get_anno(Le1))#a.ns, Ks), St1),
+ {[Le1|Les1],St2};
+uexprs([], _, St) -> {[],St}.
+
+uexpr(#iset{anno=A,var=V,arg=A0}, Ks, St0) ->
+ {A1,St1} = uexpr(A0, Ks, St0),
+ {#iset{anno=A#a{us=del_element(V#c_var.name, (core_lib:get_anno(A1))#a.us),
+ ns=add_element(V#c_var.name, (core_lib:get_anno(A1))#a.ns)},
+ var=V,arg=A1},St1};
+%% imatch done in uexprs.
+uexpr(#iletrec{anno=A,defs=Fs0,body=B0}, Ks, St0) ->
+ %%ok = io:fwrite("~w: ~p~n", [?LINE,{Fs0,B0}]),
+ {Fs1,St1} = mapfoldl(fun ({Name,F0}, St0) ->
+ {F1,St1} = uexpr(F0, Ks, St0),
+ {{Name,F1},St1}
+ end, St0, Fs0),
+ {B1,St2} = uexprs(B0, Ks, St1),
+ Used = used_in_any(map(fun ({_,F}) -> F end, Fs1) ++ B1),
+ {#iletrec{anno=A#a{us=Used,ns=[]},defs=Fs1,body=B1},St2};
+uexpr(#icase{anno=A,args=As0,clauses=Cs0,fc=Fc0}, Ks, St0) ->
+ %% As0 will never generate new variables.
+ {As1,St1} = uexpr_list(As0, Ks, St0),
+ {Cs1,St2} = uclauses(Cs0, Ks, St1),
+ {Fc1,St3} = uclause(Fc0, Ks, St2),
+ Used = union(used_in_any(As1), used_in_any(Cs1)),
+ New = new_in_all(Cs1),
+ {#icase{anno=A#a{us=Used,ns=New},args=As1,clauses=Cs1,fc=Fc1},St3};
+uexpr(#ifun{anno=A,id=Id,vars=As,clauses=Cs0,fc=Fc0}, Ks0, St0) ->
+ Avs = lit_list_vars(As),
+ Ks1 = union(Avs, Ks0),
+ {Cs1,St1} = ufun_clauses(Cs0, Ks1, St0),
+ {Fc1,St2} = ufun_clause(Fc0, Ks1, St1),
+ Used = subtract(intersection(used_in_any(Cs1), Ks0), Avs),
+ {#ifun{anno=A#a{us=Used,ns=[]},id=Id,vars=As,clauses=Cs1,fc=Fc1},St2};
+uexpr(#iapply{anno=A,op=Op,args=As}, _, St) ->
+ Used = union(lit_vars(Op), lit_list_vars(As)),
+ {#iapply{anno=A#a{us=Used},op=Op,args=As},St};
+uexpr(#iprimop{anno=A,name=Name,args=As}, _, St) ->
+ Used = lit_list_vars(As),
+ {#iprimop{anno=A#a{us=Used},name=Name,args=As},St};
+uexpr(#icall{anno=A,module=Mod,name=Name,args=As}, _, St) ->
+ Used = union([lit_vars(Mod),lit_vars(Name),lit_list_vars(As)]),
+ {#icall{anno=A#a{us=Used},module=Mod,name=Name,args=As},St};
+uexpr(#itry{anno=A,args=As0,vars=Vs,body=Bs0,evars=Evs,handler=Hs0}, Ks, St0) ->
+ %% Note that we export only from body and exception.
+ {As1,St1} = uexprs(As0, Ks, St0),
+ {Bs1,St2} = uexprs(Bs0, Ks, St1),
+ {Hs1,St3} = uexprs(Hs0, Ks, St2),
+ Used = intersection(used_in_any(Bs1++Hs1++As1), Ks),
+ New = new_in_all(Bs1++Hs1),
+ {#itry{anno=A#a{us=Used,ns=New},
+ args=As1,vars=Vs,body=Bs1,evars=Evs,handler=Hs1},St3};
+uexpr(#icatch{anno=A,body=Es0}, Ks, St0) ->
+ {Es1,St1} = uexprs(Es0, Ks, St0),
+ {#icatch{anno=A#a{us=used_in_any(Es1)},body=Es1},St1};
+uexpr(#ireceive1{anno=A,clauses=Cs0}, Ks, St0) ->
+ {Cs1,St1} = uclauses(Cs0, Ks, St0),
+ {#ireceive1{anno=A#a{us=used_in_any(Cs1),ns=new_in_all(Cs1)},
+ clauses=Cs1},St1};
+uexpr(#ireceive2{anno=A,clauses=Cs0,timeout=Te0,action=Tes0}, Ks, St0) ->
+ %% Te0 will never generate new variables.
+ {Te1,St1} = uexpr(Te0, Ks, St0),
+ {Cs1,St2} = uclauses(Cs0, Ks, St1),
+ {Tes1,St3} = uexprs(Tes0, Ks, St2),
+ Used = union([used_in_any(Cs1),used_in_any(Tes1),
+ (core_lib:get_anno(Te1))#a.us]),
+ New = case Cs1 of
+ [] -> new_in_any(Tes1);
+ _ -> intersection(new_in_all(Cs1), new_in_any(Tes1))
+ end,
+ {#ireceive2{anno=A#a{us=Used,ns=New},
+ clauses=Cs1,timeout=Te1,action=Tes1},St3};
+uexpr(#iprotect{anno=A,body=Es0}, Ks, St0) ->
+ {Es1,St1} = uexprs(Es0, Ks, St0),
+ Used = used_in_any(Es1),
+ {#iprotect{anno=A#a{us=Used},body=Es1},St1}; %No new variables escape!
+uexpr(#ibinary{anno=A,segments=Ss}, _, St) ->
+ Used = bitstr_vars(Ss),
+ {#ibinary{anno=A#a{us=Used},segments=Ss},St};
+uexpr(Lit, _, St) ->
+ true = core_lib:is_simple(Lit), %Sanity check!
+ Vs = lit_vars(Lit),
+ Anno = core_lib:get_anno(Lit),
+ {core_lib:set_anno(Lit, #a{us=Vs,anno=Anno}),St}.
+
+uexpr_list(Les0, Ks, St0) ->
+ mapfoldl(fun (Le, St) -> uexpr(Le, Ks, St) end, St0, Les0).
+
+%% ufun_clauses([Lclause], [KnownVar], State) -> {[Lclause],State}.
+
+ufun_clauses(Lcs, Ks, St0) ->
+ mapfoldl(fun (Lc, St) -> ufun_clause(Lc, Ks, St) end, St0, Lcs).
+
+%% ufun_clause(Lclause, [KnownVar], State) -> {Lclause,State}.
+
+ufun_clause(Cl0, Ks, St0) ->
+ {Cl1,Pvs,Used,_,St1} = uclause(Cl0, [], Ks, St0),
+ A0 = get_ianno(Cl1),
+ A = A0#a{us=subtract(intersection(Used, Ks), Pvs),ns=[]},
+ {Cl1#iclause{anno=A},St1}.
+
+%% upattern(Pat, [KnownVar], State) ->
+%% {Pat,[GuardTest],[NewVar],[UsedVar],State}.
+
+upattern(#c_var{name='_'}, _, St0) ->
+ {New,St1} = new_var_name(St0),
+ {#c_var{name=New},[],[New],[],St1};
+upattern(#c_var{name=V}=Var, Ks, St0) ->
+ case is_element(V, Ks) of
+ true ->
+ {N,St1} = new_var_name(St0),
+ New = #c_var{name=N},
+ Test = #icall{anno=#a{us=add_element(N, [V])},
+ module=#c_atom{val=erlang},
+ name=#c_atom{val='=:='},
+ args=[New,Var]},
+ %% Test doesn't need protecting.
+ {New,[Test],[N],[],St1};
+ false -> {Var,[],[V],[],St0}
+ end;
+upattern(#c_cons{hd=H0,tl=T0}=Cons, Ks, St0) ->
+ {H1,Hg,Hv,Hu,St1} = upattern(H0, Ks, St0),
+ {T1,Tg,Tv,Tu,St2} = upattern(T0, union(Hv, Ks), St1),
+ {Cons#c_cons{hd=H1,tl=T1},Hg ++ Tg,union(Hv, Tv),union(Hu, Tu),St2};
+upattern(#c_tuple{es=Es0}=Tuple, Ks, St0) ->
+ {Es1,Esg,Esv,Eus,St1} = upattern_list(Es0, Ks, St0),
+ {Tuple#c_tuple{es=Es1},Esg,Esv,Eus,St1};
+upattern(#c_binary{segments=Es0}=Bin, Ks, St0) ->
+ {Es1,Esg,Esv,Eus,St1} = upat_bin(Es0, Ks, St0),
+ {Bin#c_binary{segments=Es1},Esg,Esv,Eus,St1};
+upattern(#c_alias{var=V0,pat=P0}=Alias, Ks, St0) ->
+ {V1,Vg,Vv,Vu,St1} = upattern(V0, Ks, St0),
+ {P1,Pg,Pv,Pu,St2} = upattern(P0, union(Vv, Ks), St1),
+ {Alias#c_alias{var=V1,pat=P1},Vg ++ Pg,union(Vv, Pv),union(Vu, Pu),St2};
+upattern(Other, _, St) -> {Other,[],[],[],St}. %Constants
+
+%% upattern_list([Pat], [KnownVar], State) ->
+%% {[Pat],[GuardTest],[NewVar],[UsedVar],State}.
+
+upattern_list([P0|Ps0], Ks, St0) ->
+ {P1,Pg,Pv,Pu,St1} = upattern(P0, Ks, St0),
+ {Ps1,Psg,Psv,Psu,St2} = upattern_list(Ps0, union(Pv, Ks), St1),
+ {[P1|Ps1],Pg ++ Psg,union(Pv, Psv),union(Pu, Psu),St2};
+upattern_list([], _, St) -> {[],[],[],[],St}.
+
+%% upat_bin([Pat], [KnownVar], State) ->
+%% {[Pat],[GuardTest],[NewVar],[UsedVar],State}.
+upat_bin(Es0, Ks, St0) ->
+ upat_bin(Es0, Ks, [], St0).
+
+%% upat_bin([Pat], [KnownVar], [LocalVar], State) ->
+%% {[Pat],[GuardTest],[NewVar],[UsedVar],State}.
+upat_bin([P0|Ps0], Ks, Bs, St0) ->
+ {P1,Pg,Pv,Pu,Bs1,St1} = upat_element(P0, Ks, Bs, St0),
+ {Ps1,Psg,Psv,Psu,St2} = upat_bin(Ps0, union(Pv, Ks), Bs1, St1),
+ {[P1|Ps1],Pg ++ Psg,union(Pv, Psv),union(Pu, Psu),St2};
+upat_bin([], _, _, St) -> {[],[],[],[],St}.
+
+
+%% upat_element(Segment, [KnownVar], [LocalVar], State) ->
+%% {Segment,[GuardTest],[NewVar],[UsedVar],[LocalVar],State}
+upat_element(#c_bitstr{val=H0,size=Sz}=Seg, Ks, Bs, St0) ->
+ {H1,Hg,Hv,[],St1} = upattern(H0, Ks, St0),
+ Bs1 = case H0 of
+ #c_var{name=Hname} ->
+ case H1 of
+ #c_var{name=Hname} ->
+ Bs;
+ #c_var{name=Other} ->
+ [{Hname, Other}|Bs]
+ end;
+ _ ->
+ Bs
+ end,
+ {Sz1, Us} = case Sz of
+ #c_var{name=Vname} ->
+ rename_bitstr_size(Vname, Bs);
+ _Other -> {Sz, []}
+ end,
+ {Seg#c_bitstr{val=H1, size=Sz1},Hg,Hv,Us,Bs1,St1}.
+
+rename_bitstr_size(V, [{V, N}|_]) ->
+ New = #c_var{name=N},
+ {New, [N]};
+rename_bitstr_size(V, [_|Rest]) ->
+ rename_bitstr_size(V, Rest);
+rename_bitstr_size(V, []) ->
+ Old = #c_var{name=V},
+ {Old, [V]}.
+
+used_in_any(Les) ->
+ foldl(fun (Le, Ns) -> union((core_lib:get_anno(Le))#a.us, Ns) end,
+ [], Les).
+
+new_in_any(Les) ->
+ foldl(fun (Le, Ns) -> union((core_lib:get_anno(Le))#a.ns, Ns) end,
+ [], Les).
+
+new_in_all([Le|Les]) ->
+ foldl(fun (L, Ns) -> intersection((core_lib:get_anno(L))#a.ns, Ns) end,
+ (core_lib:get_anno(Le))#a.ns, Les);
+new_in_all([]) -> [].
+
+%% The AfterVars are the variables which are used afterwards. We need
+%% this to work out which variables are actually exported and used
+%% from case/receive. In subblocks/clauses the AfterVars of the block
+%% are just the exported variables.
+
+cbody(B0, St0) ->
+ {B1,_,_,St1} = cexpr(B0, [], St0),
+ {B1,St1}.
+
+%% cclause(Lclause, [AfterVar], State) -> {Cclause,State}.
+%% The AfterVars are the exported variables.
+
+cclause(#iclause{anno=#a{anno=Anno},pats=Ps,guard=G0,body=B0}, Exp, St0) ->
+ {B1,_Us1,St1} = cexprs(B0, Exp, St0),
+ {G1,St2} = cguard(G0, St1),
+ {#c_clause{anno=Anno,pats=Ps,guard=G1,body=B1},St2}.
+
+cclauses(Lcs, Es, St0) ->
+ mapfoldl(fun (Lc, St) -> cclause(Lc, Es, St) end, St0, Lcs).
+
+cguard([], St) -> {#c_atom{val=true},St};
+cguard(Gs, St0) ->
+ {G,_,St1} = cexprs(Gs, [], St0),
+ {G,St1}.
+
+%% cexprs([Lexpr], [AfterVar], State) -> {Cexpr,[AfterVar],State}.
+%% Must be sneaky here at the last expr when combining exports for the
+%% whole sequence and exports for that expr.
+
+cexprs([#iset{var=#c_var{name=Name}=Var}=Iset], As, St) ->
+ %% Make return value explicit, and make Var true top level.
+ cexprs([Iset,Var#c_var{anno=#a{us=[Name]}}], As, St);
+cexprs([Le], As, St0) ->
+ {Ce,Es,Us,St1} = cexpr(Le, As, St0),
+ Exp = make_vars(As), %The export variables
+ if
+ Es == [] -> {core_lib:make_values([Ce|Exp]),union(Us, As),St1};
+ true ->
+ {R,St2} = new_var(St1),
+ {#c_let{anno=get_lineno_anno(Ce),
+ vars=[R|make_vars(Es)],arg=Ce,
+ body=core_lib:make_values([R|Exp])},
+ union(Us, As),St2}
+ end;
+cexprs([#iset{anno=#a{anno=A},var=V,arg=A0}|Les], As0, St0) ->
+ {Ces,As1,St1} = cexprs(Les, As0, St0),
+ {A1,Es,Us,St2} = cexpr(A0, As1, St1),
+ {#c_let{anno=A,vars=[V|make_vars(Es)],arg=A1,body=Ces},
+ union(Us, As1),St2};
+cexprs([Le|Les], As0, St0) ->
+ {Ces,As1,St1} = cexprs(Les, As0, St0),
+ {Ce,Es,Us,St2} = cexpr(Le, As1, St1),
+ if
+ Es == [] ->
+ {#c_seq{arg=Ce,body=Ces},union(Us, As1),St2};
+ true ->
+ {R,St3} = new_var(St2),
+ {#c_let{vars=[R|make_vars(Es)],arg=Ce,body=Ces},
+ union(Us, As1),St3}
+ end.
+
+%% cexpr(Lexpr, [AfterVar], State) -> {Cexpr,[ExpVar],[UsedVar],State}.
+
+cexpr(#iletrec{anno=A,defs=Fs0,body=B0}, As, St0) ->
+ {Fs1,{_,St1}} = mapfoldl(fun ({Name,F0}, {Used,St0}) ->
+ {F1,[],Us,St1} = cexpr(F0, [], St0),
+ {#c_def{name=#c_fname{id=Name,arity=1},
+ val=F1},
+ {union(Us, Used),St1}}
+ end, {[],St0}, Fs0),
+ Exp = intersection(A#a.ns, As),
+ {B1,_Us,St2} = cexprs(B0, Exp, St1),
+ {#c_letrec{anno=A#a.anno,defs=Fs1,body=B1},Exp,A#a.us,St2};
+cexpr(#icase{anno=A,args=Largs,clauses=Lcs,fc=Lfc}, As, St0) ->
+ Exp = intersection(A#a.ns, As), %Exports
+ {Cargs,St1} = foldr(fun (La, {Cas,Sta}) ->
+ {Ca,[],_Us1,Stb} = cexpr(La, As, Sta),
+ {[Ca|Cas],Stb}
+ end, {[],St0}, Largs),
+ {Ccs,St2} = cclauses(Lcs, Exp, St1),
+ {Cfc,St3} = cclause(Lfc, [], St2), %Never exports
+ {#c_case{anno=A#a.anno,
+ arg=core_lib:make_values(Cargs),clauses=Ccs ++ [Cfc]},
+ Exp,A#a.us,St3};
+cexpr(#ireceive1{anno=A,clauses=Lcs}, As, St0) ->
+ Exp = intersection(A#a.ns, As), %Exports
+ {Ccs,St1} = cclauses(Lcs, Exp, St0),
+ {#c_receive{anno=A#a.anno,
+ clauses=Ccs,
+ timeout=#c_atom{val=infinity},action=#c_atom{val=true}},
+ Exp,A#a.us,St1};
+cexpr(#ireceive2{anno=A,clauses=Lcs,timeout=Lto,action=Les}, As, St0) ->
+ Exp = intersection(A#a.ns, As), %Exports
+ {Cto,[],_Us1,St1} = cexpr(Lto, As, St0),
+ {Ccs,St2} = cclauses(Lcs, Exp, St1),
+ {Ces,_Us2,St3} = cexprs(Les, Exp, St2),
+ {#c_receive{anno=A#a.anno,
+ clauses=Ccs,timeout=Cto,action=Ces},
+ Exp,A#a.us,St3};
+cexpr(#itry{anno=A,args=La,vars=Vs,body=Lb,evars=Evs,handler=Lh}, As, St0) ->
+ Exp = intersection(A#a.ns, As), %Exports
+ {Ca,_Us1,St1} = cexprs(La, [], St0),
+ {Cb,_Us2,St2} = cexprs(Lb, Exp, St1),
+ {Ch,_Us3,St3} = cexprs(Lh, Exp, St2),
+ {#c_try{anno=A#a.anno,arg=Ca,vars=Vs,body=Cb,evars=Evs,handler=Ch},
+ Exp,A#a.us,St3};
+cexpr(#icatch{anno=A,body=Les}, _As, St0) ->
+ {Ces,_Us1,St1} = cexprs(Les, [], St0), %Never export!
+ {#c_catch{body=Ces},[],A#a.us,St1};
+cexpr(#ifun{anno=A,id=Id,vars=Args,clauses=Lcs,fc=Lfc}, _As, St0) ->
+ {Ccs,St1} = cclauses(Lcs, [], St0), %NEVER export!
+ {Cfc,St2} = cclause(Lfc, [], St1),
+ Anno = A#a.anno,
+ {#c_fun{anno=Id++Anno,vars=Args,
+ body=#c_case{anno=Anno,
+ arg=core_lib:set_anno(core_lib:make_values(Args), Anno),
+ clauses=Ccs ++ [Cfc]}},
+ [],A#a.us,St2};
+cexpr(#iapply{anno=A,op=Op,args=Args}, _As, St) ->
+ {#c_apply{anno=A#a.anno,op=Op,args=Args},[],A#a.us,St};
+cexpr(#icall{anno=A,module=Mod,name=Name,args=Args}, _As, St) ->
+ {#c_call{anno=A#a.anno,module=Mod,name=Name,args=Args},[],A#a.us,St};
+cexpr(#iprimop{anno=A,name=Name,args=Args}, _As, St) ->
+ {#c_primop{anno=A#a.anno,name=Name,args=Args},[],A#a.us,St};
+cexpr(#iprotect{anno=A,body=Es}, _As, St0) ->
+ {Ce,_,St1} = cexprs(Es, [], St0),
+ V = #c_var{name='Try'}, %The names are arbitrary
+ Vs = [#c_var{name='T'},#c_var{name='R'}],
+ {#c_try{anno=A#a.anno,arg=Ce,vars=[V],body=V,
+ evars=Vs,handler=#c_atom{val=false}},
+ [],A#a.us,St1};
+cexpr(#ibinary{anno=#a{anno=Anno,us=Us},segments=Segs}, _As, St) ->
+ {#c_binary{anno=Anno,segments=Segs},[],Us,St};
+cexpr(Lit, _As, St) ->
+ true = core_lib:is_simple(Lit), %Sanity check!
+ Anno = core_lib:get_anno(Lit),
+ Vs = Anno#a.us,
+ %%Vs = lit_vars(Lit),
+ {core_lib:set_anno(Lit, Anno#a.anno),[],Vs,St}.
+
+%% lit_vars(Literal) -> [Var].
+
+lit_vars(Lit) -> lit_vars(Lit, []).
+
+lit_vars(#c_cons{hd=H,tl=T}, Vs) -> lit_vars(H, lit_vars(T, Vs));
+lit_vars(#c_tuple{es=Es}, Vs) -> lit_list_vars(Es, Vs);
+lit_vars(#c_var{name=V}, Vs) -> add_element(V, Vs);
+lit_vars(_, Vs) -> Vs. %These are atomic
+
+% lit_bin_vars(Segs, Vs) ->
+% foldl(fun (#c_bitstr{val=V,size=S}, Vs0) ->
+% lit_vars(V, lit_vars(S, Vs0))
+% end, Vs, Segs).
+
+lit_list_vars(Ls) -> lit_list_vars(Ls, []).
+
+lit_list_vars(Ls, Vs) ->
+ foldl(fun (L, Vs0) -> lit_vars(L, Vs0) end, Vs, Ls).
+
+bitstr_vars(Segs) ->
+ bitstr_vars(Segs, []).
+
+bitstr_vars(Segs, Vs) ->
+ foldl(fun (#c_bitstr{val=V,size=S}, Vs0) ->
+ lit_vars(V, lit_vars(S, Vs0))
+ end, Vs, Segs).
+
+get_ianno(Ce) ->
+ case core_lib:get_anno(Ce) of
+ #a{}=A -> A;
+ A when is_list(A) -> #a{anno=A}
+ end.
+
+get_lineno_anno(Ce) ->
+ case core_lib:get_anno(Ce) of
+ #a{anno=A} -> A;
+ A when is_list(A) -> A
+ end.
+
+
+%%%
+%%% Handling of warnings.
+%%%
+
+format_error(nomatch) -> "pattern cannot possibly match".
+
+add_warning(Line, Term, #core{ws=Ws}=St) when Line >= 0 ->
+ St#core{ws=[{Line,?MODULE,Term}|Ws]};
+add_warning(_, _, St) -> St.
+
diff --git a/lib/dialyzer/test/options1_tests_SUITE_data/src/compiler/v3_kernel.erl b/lib/dialyzer/test/options1_tests_SUITE_data/src/compiler/v3_kernel.erl
new file mode 100644
index 0000000000..2d600fabc4
--- /dev/null
+++ b/lib/dialyzer/test/options1_tests_SUITE_data/src/compiler/v3_kernel.erl
@@ -0,0 +1,1568 @@
+%% ``The contents of this file are subject to the Erlang Public License,
+%% Version 1.1, (the "License"); you may not use this file except in
+%% compliance with the License. You should have received a copy of the
+%% Erlang Public License along with this software. If not, it can be
+%% retrieved via the world wide web at http://www.erlang.org/.
+%%
+%% Software distributed under the License is distributed on an "AS IS"
+%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
+%% the License for the specific language governing rights and limitations
+%% under the License.
+%%
+%% The Initial Developer of the Original Code is Ericsson Utvecklings AB.
+%% Portions created by Ericsson are Copyright 1999, Ericsson Utvecklings
+%% AB. All Rights Reserved.''
+%%
+%% $Id: v3_kernel.erl,v 1.3 2010/03/04 13:54:20 maria Exp $
+%%
+%% Purpose : Transform Core Erlang to Kernel Erlang
+
+%% Kernel erlang is like Core Erlang with a few significant
+%% differences:
+%%
+%% 1. It is flat! There are no nested calls or sub-blocks.
+%%
+%% 2. All variables are unique in a function. There is no scoping, or
+%% rather the scope is the whole function.
+%%
+%% 3. Pattern matching (in cases and receives) has been compiled.
+%%
+%% 4. The annotations contain variable usages. Seeing we have to work
+%% this out anyway for funs we might as well pass it on for free to
+%% later passes.
+%%
+%% 5. All remote-calls are to statically named m:f/a. Meta-calls are
+%% passed via erlang:apply/3.
+%%
+%% The translation is done in two passes:
+%%
+%% 1. Basic translation, translate variable/function names, flatten
+%% completely, pattern matching compilation.
+%%
+%% 2. Fun-lifting (lambda-lifting), variable usage annotation and
+%% last-call handling.
+%%
+%% All new Kexprs are created in the first pass, they are just
+%% annotated in the second.
+%%
+%% Functions and BIFs
+%%
+%% Functions are "call"ed or "enter"ed if it is a last call, their
+%% return values may be ignored. BIFs are things which are known to
+%% be internal by the compiler and can only be called, their return
+%% values cannot be ignored.
+%%
+%% Letrec's are handled rather naively. All the functions in one
+%% letrec are handled as one block to find the free variables. While
+%% this is not optimal it reflects how letrec's often are used. We
+%% don't have to worry about variable shadowing and nested letrec's as
+%% this is handled in the variable/function name translation. There
+%% is a little bit of trickery to ensure letrec transformations fit
+%% into the scheme of things.
+%%
+%% To ensure unique variable names we use a variable substitution
+%% table and keep the set of all defined variables. The nested
+%% scoping of Core means that we must also nest the substitution
+%% tables, but the defined set must be passed through to match the
+%% flat structure of Kernel and to make sure variables with the same
+%% name from different scopes get different substitutions.
+%%
+%% We also use these substitutions to handle the variable renaming
+%% necessary in pattern matching compilation.
+%%
+%% The pattern matching compilation assumes that the values of
+%% different types don't overlap. This means that as there is no
+%% character type yet in the machine all characters must be converted
+%% to integers!
+
+-module(v3_kernel).
+
+-export([module/2,format_error/1]).
+
+-import(lists, [map/2,foldl/3,foldr/3,mapfoldl/3,splitwith/2,
+ member/2,reverse/1,reverse/2]).
+-import(ordsets, [add_element/2,del_element/2,union/2,union/1,subtract/2]).
+
+-include("core_parse.hrl").
+-include("v3_kernel.hrl").
+
+%% These are not defined in v3_kernel.hrl.
+get_kanno(Kthing) -> element(2, Kthing).
+set_kanno(Kthing, Anno) -> setelement(2, Kthing, Anno).
+
+%% Internal kernel expressions and help functions.
+%% N.B. the annotation field is ALWAYS the first field!
+
+-record(ivalues, {anno=[],args}).
+-record(ifun, {anno=[],vars,body}).
+-record(iset, {anno=[],vars,arg,body}).
+-record(iletrec, {anno=[],defs}).
+-record(ialias, {anno=[],vars,pat}).
+-record(iclause, {anno=[],sub,pats,guard,body}).
+-record(ireceive_accept, {anno=[],arg}).
+-record(ireceive_next, {anno=[],arg}).
+
+%% State record for kernel translator.
+-record(kern, {func, %Current function
+ vcount=0, %Variable counter
+ fcount=0, %Fun counter
+ ds=[], %Defined variables
+ funs=[], %Fun functions
+ free=[], %Free variables
+ ws=[], %Warnings.
+ extinstr=false}). %Generate extended instructions
+
+module(#c_module{anno=A,name=M,exports=Es,attrs=As,defs=Fs}, Options) ->
+ ExtInstr = not member(no_new_apply, Options),
+ {Kfs,St} = mapfoldl(fun function/2, #kern{extinstr=ExtInstr}, Fs),
+ Kes = map(fun (#c_fname{id=N,arity=Ar}) -> {N,Ar} end, Es),
+ Kas = map(fun (#c_def{name=#c_atom{val=N},val=V}) ->
+ {N,core_lib:literal_value(V)} end, As),
+ {ok,#k_mdef{anno=A,name=M#c_atom.val,exports=Kes,attributes=Kas,
+ body=Kfs ++ St#kern.funs},St#kern.ws}.
+
+function(#c_def{anno=Af,name=#c_fname{id=F,arity=Arity},val=Body}, St0) ->
+ %%ok = io:fwrite("kern: ~p~n", [{F,Arity}]),
+ St1 = St0#kern{func={F,Arity},vcount=0,fcount=0,ds=sets:new()},
+ {#ifun{anno=Ab,vars=Kvs,body=B0},[],St2} = expr(Body, new_sub(), St1),
+ {B1,_,St3} = ubody(B0, return, St2),
+ %%B1 = B0, St3 = St2, %Null second pass
+ {#k_fdef{anno=#k{us=[],ns=[],a=Af ++ Ab},
+ func=F,arity=Arity,vars=Kvs,body=B1},St3}.
+
+%% body(Cexpr, Sub, State) -> {Kexpr,[PreKepxr],State}.
+%% Do the main sequence of a body. A body ends in an atomic value or
+%% values. Must check if vector first so do expr.
+
+body(#c_values{anno=A,es=Ces}, Sub, St0) ->
+ %% Do this here even if only in bodies.
+ {Kes,Pe,St1} = atomic_list(Ces, Sub, St0),
+ %%{Kes,Pe,St1} = expr_list(Ces, Sub, St0),
+ {#ivalues{anno=A,args=Kes},Pe,St1};
+body(#ireceive_next{anno=A}, _, St) ->
+ {#k_receive_next{anno=A},[],St};
+body(Ce, Sub, St0) ->
+ expr(Ce, Sub, St0).
+
+%% guard(Cexpr, Sub, State) -> {Kexpr,State}.
+%% We handle guards almost as bodies. The only special thing we
+%% must do is to make the final Kexpr a #k_test{}.
+%% Also, we wrap the entire guard in a try/catch which is
+%% not strictly needed, but makes sure that every 'bif' instruction
+%% will get a proper failure label.
+
+guard(G0, Sub, St0) ->
+ {G1,St1} = wrap_guard(G0, St0),
+ {Ge0,Pre,St2} = expr(G1, Sub, St1),
+ {Ge,St} = gexpr_test(Ge0, St2),
+ {pre_seq(Pre, Ge),St}.
+
+%% Wrap the entire guard in a try/catch if needed.
+
+wrap_guard(#c_try{}=Try, St) -> {Try,St};
+wrap_guard(Core, St0) ->
+ {VarName,St} = new_var_name(St0),
+ Var = #c_var{name=VarName},
+ Try = #c_try{arg=Core,vars=[Var],body=Var,evars=[],handler=#c_atom{val=false}},
+ {Try,St}.
+
+%% gexpr_test(Kexpr, State) -> {Kexpr,State}.
+%% Builds the final boolean test from the last Kexpr in a guard test.
+%% Must enter try blocks and isets and find the last Kexpr in them.
+%% This must end in a recognised BEAM test!
+
+gexpr_test(#k_bif{anno=A,op=#k_remote{mod=#k_atom{val=erlang},
+ name=#k_atom{val=is_boolean},arity=1}=Op,
+ args=Kargs}, St) ->
+ %% XXX Remove this clause in R11. For bootstrap purposes, we must
+ %% recognize erlang:is_boolean/1 here.
+ {#k_test{anno=A,op=Op,args=Kargs},St};
+gexpr_test(#k_bif{anno=A,op=#k_remote{mod=#k_atom{val=erlang},
+ name=#k_atom{val=internal_is_record},arity=3}=Op,
+ args=Kargs}, St) ->
+ {#k_test{anno=A,op=Op,args=Kargs},St};
+gexpr_test(#k_bif{anno=A,op=#k_remote{mod=#k_atom{val=erlang},
+ name=#k_atom{val=F},arity=Ar}=Op,
+ args=Kargs}=Ke, St) ->
+ %% Either convert to test if ok, or add test.
+ %% At this stage, erlang:float/1 is not a type test. (It should
+ %% have been converted to erlang:is_float/1.)
+ case erl_internal:new_type_test(F, Ar) orelse
+ erl_internal:comp_op(F, Ar) of
+ true -> {#k_test{anno=A,op=Op,args=Kargs},St};
+ false -> gexpr_test_add(Ke, St) %Add equality test
+ end;
+gexpr_test(#k_try{arg=B0,vars=[#k_var{name=X}],body=#k_var{name=X},
+ handler=#k_atom{val=false}}=Try, St0) ->
+ {B,St} = gexpr_test(B0, St0),
+ %%ok = io:fwrite("~w: ~p~n", [?LINE,{B0,B}]),
+ {Try#k_try{arg=B},St};
+gexpr_test(#iset{body=B0}=Iset, St0) ->
+ {B1,St1} = gexpr_test(B0, St0),
+ {Iset#iset{body=B1},St1};
+gexpr_test(Ke, St) -> gexpr_test_add(Ke, St). %Add equality test
+
+gexpr_test_add(Ke, St0) ->
+ Test = #k_remote{mod=#k_atom{val='erlang'},
+ name=#k_atom{val='=:='},
+ arity=2},
+ {Ae,Ap,St1} = force_atomic(Ke, St0),
+ {pre_seq(Ap, #k_test{anno=get_kanno(Ke),
+ op=Test,args=[Ae,#k_atom{val='true'}]}),St1}.
+
+%% expr(Cexpr, Sub, State) -> {Kexpr,[PreKexpr],State}.
+%% Convert a Core expression, flattening it at the same time.
+
+expr(#c_var{anno=A,name=V}, Sub, St) ->
+ {#k_var{anno=A,name=get_vsub(V, Sub)},[],St};
+expr(#c_char{anno=A,val=C}, _Sub, St) ->
+ {#k_int{anno=A,val=C},[],St}; %Convert to integers!
+expr(#c_int{anno=A,val=I}, _Sub, St) ->
+ {#k_int{anno=A,val=I},[],St};
+expr(#c_float{anno=A,val=F}, _Sub, St) ->
+ {#k_float{anno=A,val=F},[],St};
+expr(#c_atom{anno=A,val=At}, _Sub, St) ->
+ {#k_atom{anno=A,val=At},[],St};
+expr(#c_string{anno=A,val=S}, _Sub, St) ->
+ {#k_string{anno=A,val=S},[],St};
+expr(#c_nil{anno=A}, _Sub, St) ->
+ {#k_nil{anno=A},[],St};
+expr(#c_cons{anno=A,hd=Ch,tl=Ct}, Sub, St0) ->
+ %% Do cons in two steps, first the expressions left to right, then
+ %% any remaining literals right to left.
+ {Kh0,Hp0,St1} = expr(Ch, Sub, St0),
+ {Kt0,Tp0,St2} = expr(Ct, Sub, St1),
+ {Kt1,Tp1,St3} = force_atomic(Kt0, St2),
+ {Kh1,Hp1,St4} = force_atomic(Kh0, St3),
+ {#k_cons{anno=A,hd=Kh1,tl=Kt1},Hp0 ++ Tp0 ++ Tp1 ++ Hp1,St4};
+expr(#c_tuple{anno=A,es=Ces}, Sub, St0) ->
+ {Kes,Ep,St1} = atomic_list(Ces, Sub, St0),
+ {#k_tuple{anno=A,es=Kes},Ep,St1};
+expr(#c_binary{anno=A,segments=Cv}, Sub, St0) ->
+ case catch atomic_bin(Cv, Sub, St0, 0) of
+ {'EXIT',R} -> exit(R);
+ bad_element_size ->
+ Erl = #c_atom{val=erlang},
+ Name = #c_atom{val=error},
+ Args = [#c_atom{val=badarg}],
+ Fault = #c_call{module=Erl,name=Name,args=Args},
+ expr(Fault, Sub, St0);
+ {Kv,Ep,St1} ->
+ {#k_binary{anno=A,segs=Kv},Ep,St1}
+ end;
+expr(#c_fname{anno=A,arity=Ar}=Fname, Sub, St) ->
+ %% A local in an expression.
+ %% For now, these are wrapped into a fun by reverse
+ %% etha-conversion, but really, there should be exactly one
+ %% such "lambda function" for each escaping local name,
+ %% instead of one for each occurrence as done now.
+ Vs = [#c_var{name=list_to_atom("V" ++ integer_to_list(V))} ||
+ V <- integers(1, Ar)],
+ Fun = #c_fun{anno=A,vars=Vs,body=#c_apply{op=Fname,args=Vs}},
+ expr(Fun, Sub, St);
+expr(#c_fun{anno=A,vars=Cvs,body=Cb}, Sub0, St0) ->
+ {Kvs,Sub1,St1} = pattern_list(Cvs, Sub0, St0),
+ %%ok = io:fwrite("~w: ~p~n", [?LINE,{{Cvs,Sub0,St0},{Kvs,Sub1,St1}}]),
+ {Kb,Pb,St2} = body(Cb, Sub1, St1),
+ {#ifun{anno=A,vars=Kvs,body=pre_seq(Pb, Kb)},[],St2};
+expr(#c_seq{arg=Ca,body=Cb}, Sub, St0) ->
+ {Ka,Pa,St1} = body(Ca, Sub, St0),
+ case is_exit_expr(Ka) of
+ true -> {Ka,Pa,St1};
+ false ->
+ {Kb,Pb,St2} = body(Cb, Sub, St1),
+ {Kb,Pa ++ [Ka] ++ Pb,St2}
+ end;
+expr(#c_let{anno=A,vars=Cvs,arg=Ca,body=Cb}, Sub0, St0) ->
+ %%ok = io:fwrite("~w: ~p~n", [?LINE,{Cvs,Sub0,St0}]),
+ {Ka,Pa,St1} = body(Ca, Sub0, St0),
+ case is_exit_expr(Ka) of
+ true -> {Ka,Pa,St1};
+ false ->
+ {Kps,Sub1,St2} = pattern_list(Cvs, Sub0, St1),
+ %%ok = io:fwrite("~w: ~p~n", [?LINE,{Kps,Sub1,St1,St2}]),
+ %% Break known multiple values into separate sets.
+ Sets = case Ka of
+ #ivalues{args=Kas} ->
+ foldr2(fun (V, Val, Sb) ->
+ [#iset{vars=[V],arg=Val}|Sb] end,
+ [], Kps, Kas);
+ _Other ->
+ [#iset{anno=A,vars=Kps,arg=Ka}]
+ end,
+ {Kb,Pb,St3} = body(Cb, Sub1, St2),
+ {Kb,Pa ++ Sets ++ Pb,St3}
+ end;
+expr(#c_letrec{anno=A,defs=Cfs,body=Cb}, Sub0, St0) ->
+ %% Make new function names and store substitution.
+ {Fs0,{Sub1,St1}} =
+ mapfoldl(fun (#c_def{name=#c_fname{id=F,arity=Ar},val=B}, {Sub,St0}) ->
+ {N,St1} = new_fun_name(atom_to_list(F)
+ ++ "/" ++
+ integer_to_list(Ar),
+ St0),
+ {{N,B},{set_fsub(F, Ar, N, Sub),St1}}
+ end, {Sub0,St0}, Cfs),
+ %% Run translation on functions and body.
+ {Fs1,St2} = mapfoldl(fun ({N,Fd0}, St1) ->
+ {Fd1,[],St2} = expr(Fd0, Sub1, St1),
+ Fd = set_kanno(Fd1, A),
+ {{N,Fd},St2}
+ end, St1, Fs0),
+ {Kb,Pb,St3} = body(Cb, Sub1, St2),
+ {Kb,[#iletrec{anno=A,defs=Fs1}|Pb],St3};
+expr(#c_case{arg=Ca,clauses=Ccs}, Sub, St0) ->
+ {Ka,Pa,St1} = body(Ca, Sub, St0), %This is a body!
+ {Kvs,Pv,St2} = match_vars(Ka, St1), %Must have variables here!
+ {Km,St3} = kmatch(Kvs, Ccs, Sub, St2),
+ Match = flatten_seq(build_match(Kvs, Km)),
+ {last(Match),Pa ++ Pv ++ first(Match),St3};
+expr(#c_receive{anno=A,clauses=Ccs0,timeout=Ce,action=Ca}, Sub, St0) ->
+ {Ke,Pe,St1} = atomic_lit(Ce, Sub, St0), %Force this to be atomic!
+ {Rvar,St2} = new_var(St1),
+ %% Need to massage accept clauses and add reject clause before matching.
+ Ccs1 = map(fun (#c_clause{anno=Banno,body=B0}=C) ->
+ B1 = #c_seq{arg=#ireceive_accept{anno=A},body=B0},
+ C#c_clause{anno=Banno,body=B1}
+ end, Ccs0),
+ {Mpat,St3} = new_var_name(St2),
+ Rc = #c_clause{anno=[compiler_generated|A],
+ pats=[#c_var{name=Mpat}],guard=#c_atom{anno=A,val=true},
+ body=#ireceive_next{anno=A}},
+ {Km,St4} = kmatch([Rvar], Ccs1 ++ [Rc], Sub, add_var_def(Rvar, St3)),
+ {Ka,Pa,St5} = body(Ca, Sub, St4),
+ {#k_receive{anno=A,var=Rvar,body=Km,timeout=Ke,action=pre_seq(Pa, Ka)},
+ Pe,St5};
+expr(#c_apply{anno=A,op=Cop,args=Cargs}, Sub, St) ->
+ c_apply(A, Cop, Cargs, Sub, St);
+expr(#c_call{anno=A,module=M0,name=F0,args=Cargs}, Sub, St0) ->
+ {[M1,F1|Kargs],Ap,St1} = atomic_list([M0,F0|Cargs], Sub, St0),
+ Ar = length(Cargs),
+ case {M1,F1} of
+ {#k_atom{val=Ma},#k_atom{val=Fa}} ->
+ Call = case is_remote_bif(Ma, Fa, Ar) of
+ true ->
+ #k_bif{anno=A,
+ op=#k_remote{mod=M1,name=F1,arity=Ar},
+ args=Kargs};
+ false ->
+ #k_call{anno=A,
+ op=#k_remote{mod=M1,name=F1,arity=Ar},
+ args=Kargs}
+ end,
+ {Call,Ap,St1};
+ _Other when St0#kern.extinstr == false -> %Old explicit apply
+ Call = #c_call{anno=A,
+ module=#c_atom{val=erlang},
+ name=#c_atom{val=apply},
+ args=[M0,F0,make_list(Cargs)]},
+ expr(Call, Sub, St0);
+ _Other -> %New instruction in R10.
+ Call = #k_call{anno=A,
+ op=#k_remote{mod=M1,name=F1,arity=Ar},
+ args=Kargs},
+ {Call,Ap,St1}
+ end;
+expr(#c_primop{anno=A,name=#c_atom{val=match_fail},args=Cargs}, Sub, St0) ->
+ %% This special case will disappear.
+ {Kargs,Ap,St1} = atomic_list(Cargs, Sub, St0),
+ Ar = length(Cargs),
+ Call = #k_call{anno=A,op=#k_internal{name=match_fail,arity=Ar},args=Kargs},
+ {Call,Ap,St1};
+expr(#c_primop{anno=A,name=#c_atom{val=N},args=Cargs}, Sub, St0) ->
+ {Kargs,Ap,St1} = atomic_list(Cargs, Sub, St0),
+ Ar = length(Cargs),
+ {#k_bif{anno=A,op=#k_internal{name=N,arity=Ar},args=Kargs},Ap,St1};
+expr(#c_try{anno=A,arg=Ca,vars=Cvs,body=Cb,evars=Evs,handler=Ch}, Sub0, St0) ->
+ %% The normal try expression. The body and exception handler
+ %% variables behave as let variables.
+ {Ka,Pa,St1} = body(Ca, Sub0, St0),
+ {Kcvs,Sub1,St2} = pattern_list(Cvs, Sub0, St1),
+ {Kb,Pb,St3} = body(Cb, Sub1, St2),
+ {Kevs,Sub2,St4} = pattern_list(Evs, Sub0, St3),
+ {Kh,Ph,St5} = body(Ch, Sub2, St4),
+ {#k_try{anno=A,arg=pre_seq(Pa, Ka),
+ vars=Kcvs,body=pre_seq(Pb, Kb),
+ evars=Kevs,handler=pre_seq(Ph, Kh)},[],St5};
+expr(#c_catch{anno=A,body=Cb}, Sub, St0) ->
+ {Kb,Pb,St1} = body(Cb, Sub, St0),
+ {#k_catch{anno=A,body=pre_seq(Pb, Kb)},[],St1};
+%% Handle internal expressions.
+expr(#ireceive_accept{anno=A}, _Sub, St) -> {#k_receive_accept{anno=A},[],St}.
+
+%% expr_list([Cexpr], Sub, State) -> {[Kexpr],[PreKexpr],State}.
+
+% expr_list(Ces, Sub, St) ->
+% foldr(fun (Ce, {Kes,Esp,St0}) ->
+% {Ke,Ep,St1} = expr(Ce, Sub, St0),
+% {[Ke|Kes],Ep ++ Esp,St1}
+% end, {[],[],St}, Ces).
+
+%% match_vars(Kexpr, State) -> {[Kvar],[PreKexpr],State}.
+%% Force return from body into a list of variables.
+
+match_vars(#ivalues{args=As}, St) ->
+ foldr(fun (Ka, {Vs,Vsp,St0}) ->
+ {V,Vp,St1} = force_variable(Ka, St0),
+ {[V|Vs],Vp ++ Vsp,St1}
+ end, {[],[],St}, As);
+match_vars(Ka, St0) ->
+ {V,Vp,St1} = force_variable(Ka, St0),
+ {[V],Vp,St1}.
+
+%% c_apply(A, Op, [Carg], Sub, State) -> {Kexpr,[PreKexpr],State}.
+%% Transform application, detect which are guaranteed to be bifs.
+
+c_apply(A, #c_fname{anno=Ra,id=F0,arity=Ar}, Cargs, Sub, St0) ->
+ {Kargs,Ap,St1} = atomic_list(Cargs, Sub, St0),
+ F1 = get_fsub(F0, Ar, Sub), %Has it been rewritten
+ {#k_call{anno=A,op=#k_local{anno=Ra,name=F1,arity=Ar},args=Kargs},
+ Ap,St1};
+c_apply(A, Cop, Cargs, Sub, St0) ->
+ {Kop,Op,St1} = variable(Cop, Sub, St0),
+ {Kargs,Ap,St2} = atomic_list(Cargs, Sub, St1),
+ {#k_call{anno=A,op=Kop,args=Kargs},Op ++ Ap,St2}.
+
+flatten_seq(#iset{anno=A,vars=Vs,arg=Arg,body=B}) ->
+ [#iset{anno=A,vars=Vs,arg=Arg}|flatten_seq(B)];
+flatten_seq(Ke) -> [Ke].
+
+pre_seq([#iset{anno=A,vars=Vs,arg=Arg,body=B}|Ps], K) ->
+ B = undefined, %Assertion.
+ #iset{anno=A,vars=Vs,arg=Arg,body=pre_seq(Ps, K)};
+pre_seq([P|Ps], K) ->
+ #iset{vars=[],arg=P,body=pre_seq(Ps, K)};
+pre_seq([], K) -> K.
+
+%% atomic_lit(Cexpr, Sub, State) -> {Katomic,[PreKexpr],State}.
+%% Convert a Core expression making sure the result is an atomic
+%% literal.
+
+atomic_lit(Ce, Sub, St0) ->
+ {Ke,Kp,St1} = expr(Ce, Sub, St0),
+ {Ka,Ap,St2} = force_atomic(Ke, St1),
+ {Ka,Kp ++ Ap,St2}.
+
+force_atomic(Ke, St0) ->
+ case is_atomic(Ke) of
+ true -> {Ke,[],St0};
+ false ->
+ {V,St1} = new_var(St0),
+ {V,[#iset{vars=[V],arg=Ke}],St1}
+ end.
+
+% force_atomic_list(Kes, St) ->
+% foldr(fun (Ka, {As,Asp,St0}) ->
+% {A,Ap,St1} = force_atomic(Ka, St0),
+% {[A|As],Ap ++ Asp,St1}
+% end, {[],[],St}, Kes).
+
+atomic_bin([#c_bitstr{anno=A,val=E0,size=S0,unit=U,type=T,flags=Fs}|Es0],
+ Sub, St0, B0) ->
+ {E,Ap1,St1} = atomic_lit(E0, Sub, St0),
+ {S1,Ap2,St2} = atomic_lit(S0, Sub, St1),
+ validate_bin_element_size(S1),
+ U0 = core_lib:literal_value(U),
+ Fs0 = core_lib:literal_value(Fs),
+ {B1,Fs1} = aligned(B0, S1, U0, Fs0),
+ {Es,Ap3,St3} = atomic_bin(Es0, Sub, St2, B1),
+ {#k_bin_seg{anno=A,size=S1,
+ unit=U0,
+ type=core_lib:literal_value(T),
+ flags=Fs1,
+ seg=E,next=Es},
+ Ap1++Ap2++Ap3,St3};
+atomic_bin([], _Sub, St, _Bits) -> {#k_bin_end{},[],St}.
+
+validate_bin_element_size(#k_var{}) -> ok;
+validate_bin_element_size(#k_int{val=V}) when V >= 0 -> ok;
+validate_bin_element_size(#k_atom{val=all}) -> ok;
+validate_bin_element_size(_) -> throw(bad_element_size).
+
+%% atomic_list([Cexpr], Sub, State) -> {[Kexpr],[PreKexpr],State}.
+
+atomic_list(Ces, Sub, St) ->
+ foldr(fun (Ce, {Kes,Esp,St0}) ->
+ {Ke,Ep,St1} = atomic_lit(Ce, Sub, St0),
+ {[Ke|Kes],Ep ++ Esp,St1}
+ end, {[],[],St}, Ces).
+
+%% is_atomic(Kexpr) -> boolean().
+%% Is a Kexpr atomic? Strings are NOT considered atomic!
+
+is_atomic(#k_int{}) -> true;
+is_atomic(#k_float{}) -> true;
+is_atomic(#k_atom{}) -> true;
+%%is_atomic(#k_char{}) -> true; %No characters
+%%is_atomic(#k_string{}) -> true;
+is_atomic(#k_nil{}) -> true;
+is_atomic(#k_var{}) -> true;
+is_atomic(_) -> false.
+
+%% variable(Cexpr, Sub, State) -> {Kvar,[PreKexpr],State}.
+%% Convert a Core expression making sure the result is a variable.
+
+variable(Ce, Sub, St0) ->
+ {Ke,Kp,St1} = expr(Ce, Sub, St0),
+ {Kv,Vp,St2} = force_variable(Ke, St1),
+ {Kv,Kp ++ Vp,St2}.
+
+force_variable(#k_var{}=Ke, St) -> {Ke,[],St};
+force_variable(Ke, St0) ->
+ {V,St1} = new_var(St0),
+ {V,[#iset{vars=[V],arg=Ke}],St1}.
+
+%% pattern(Cpat, Sub, State) -> {Kpat,Sub,State}.
+%% Convert patterns. Variables shadow so rename variables that are
+%% already defined.
+
+pattern(#c_var{anno=A,name=V}, Sub, St0) ->
+ case sets:is_element(V, St0#kern.ds) of
+ true ->
+ {New,St1} = new_var_name(St0),
+ {#k_var{anno=A,name=New},
+ set_vsub(V, New, Sub),
+ St1#kern{ds=sets:add_element(New, St1#kern.ds)}};
+ false ->
+ {#k_var{anno=A,name=V},Sub,
+ St0#kern{ds=sets:add_element(V, St0#kern.ds)}}
+ end;
+pattern(#c_char{anno=A,val=C}, Sub, St) ->
+ {#k_int{anno=A,val=C},Sub,St}; %Convert to integers!
+pattern(#c_int{anno=A,val=I}, Sub, St) ->
+ {#k_int{anno=A,val=I},Sub,St};
+pattern(#c_float{anno=A,val=F}, Sub, St) ->
+ {#k_float{anno=A,val=F},Sub,St};
+pattern(#c_atom{anno=A,val=At}, Sub, St) ->
+ {#k_atom{anno=A,val=At},Sub,St};
+pattern(#c_string{val=S}, Sub, St) ->
+ L = foldr(fun (C, T) -> #k_cons{hd=#k_int{val=C},tl=T} end,
+ #k_nil{}, S),
+ {L,Sub,St};
+pattern(#c_nil{anno=A}, Sub, St) ->
+ {#k_nil{anno=A},Sub,St};
+pattern(#c_cons{anno=A,hd=Ch,tl=Ct}, Sub0, St0) ->
+ {Kh,Sub1,St1} = pattern(Ch, Sub0, St0),
+ {Kt,Sub2,St2} = pattern(Ct, Sub1, St1),
+ {#k_cons{anno=A,hd=Kh,tl=Kt},Sub2,St2};
+pattern(#c_tuple{anno=A,es=Ces}, Sub0, St0) ->
+ {Kes,Sub1,St1} = pattern_list(Ces, Sub0, St0),
+ {#k_tuple{anno=A,es=Kes},Sub1,St1};
+pattern(#c_binary{anno=A,segments=Cv}, Sub0, St0) ->
+ {Kv,Sub1,St1} = pattern_bin(Cv, Sub0, St0),
+ {#k_binary{anno=A,segs=Kv},Sub1,St1};
+pattern(#c_alias{anno=A,var=Cv,pat=Cp}, Sub0, St0) ->
+ {Cvs,Cpat} = flatten_alias(Cp),
+ {Kvs,Sub1,St1} = pattern_list([Cv|Cvs], Sub0, St0),
+ {Kpat,Sub2,St2} = pattern(Cpat, Sub1, St1),
+ {#ialias{anno=A,vars=Kvs,pat=Kpat},Sub2,St2}.
+
+flatten_alias(#c_alias{var=V,pat=P}) ->
+ {Vs,Pat} = flatten_alias(P),
+ {[V|Vs],Pat};
+flatten_alias(Pat) -> {[],Pat}.
+
+pattern_bin(Es, Sub, St) -> pattern_bin(Es, Sub, St, 0).
+
+pattern_bin([#c_bitstr{anno=A,val=E0,size=S0,unit=U,type=T,flags=Fs}|Es0],
+ Sub0, St0, B0) ->
+ {S1,[],St1} = expr(S0, Sub0, St0),
+ U0 = core_lib:literal_value(U),
+ Fs0 = core_lib:literal_value(Fs),
+ %%ok= io:fwrite("~w: ~p~n", [?LINE,{B0,S1,U0,Fs0}]),
+ {B1,Fs1} = aligned(B0, S1, U0, Fs0),
+ {E,Sub1,St2} = pattern(E0, Sub0, St1),
+ {Es,Sub2,St3} = pattern_bin(Es0, Sub1, St2, B1),
+ {#k_bin_seg{anno=A,size=S1,
+ unit=U0,
+ type=core_lib:literal_value(T),
+ flags=Fs1,
+ seg=E,next=Es},
+ Sub2,St3};
+pattern_bin([], Sub, St, _Bits) -> {#k_bin_end{},Sub,St}.
+
+%% pattern_list([Cexpr], Sub, State) -> {[Kexpr],Sub,State}.
+
+pattern_list(Ces, Sub, St) ->
+ foldr(fun (Ce, {Kes,Sub0,St0}) ->
+ {Ke,Sub1,St1} = pattern(Ce, Sub0, St0),
+ {[Ke|Kes],Sub1,St1}
+ end, {[],Sub,St}, Ces).
+
+%% new_sub() -> Subs.
+%% set_vsub(Name, Sub, Subs) -> Subs.
+%% subst_vsub(Name, Sub, Subs) -> Subs.
+%% get_vsub(Name, Subs) -> SubName.
+%% Add/get substitute Sub for Name to VarSub. Use orddict so we know
+%% the format is a list {Name,Sub} pairs. When adding a new
+%% substitute we fold substitute chains so we never have to search
+%% more than once.
+
+new_sub() -> orddict:new().
+
+get_vsub(V, Vsub) ->
+ case orddict:find(V, Vsub) of
+ {ok,Val} -> Val;
+ error -> V
+ end.
+
+set_vsub(V, S, Vsub) ->
+ orddict:store(V, S, Vsub).
+
+subst_vsub(V, S, Vsub0) ->
+ %% Fold chained substitutions.
+ Vsub1 = orddict:map(fun (_, V1) when V1 =:= V -> S;
+ (_, V1) -> V1
+ end, Vsub0),
+ orddict:store(V, S, Vsub1).
+
+get_fsub(F, A, Fsub) ->
+ case orddict:find({F,A}, Fsub) of
+ {ok,Val} -> Val;
+ error -> F
+ end.
+
+set_fsub(F, A, S, Fsub) ->
+ orddict:store({F,A}, S, Fsub).
+
+new_fun_name(St) ->
+ new_fun_name("anonymous", St).
+
+%% new_fun_name(Type, State) -> {FunName,State}.
+
+new_fun_name(Type, #kern{func={F,Arity},fcount=C}=St) ->
+ Name = "-" ++ atom_to_list(F) ++ "/" ++ integer_to_list(Arity) ++
+ "-" ++ Type ++ "-" ++ integer_to_list(C) ++ "-",
+ {list_to_atom(Name),St#kern{fcount=C+1}}.
+
+%% new_var_name(State) -> {VarName,State}.
+
+new_var_name(#kern{vcount=C}=St) ->
+ {list_to_atom("ker" ++ integer_to_list(C)),St#kern{vcount=C+1}}.
+
+%% new_var(State) -> {#k_var{},State}.
+
+new_var(St0) ->
+ {New,St1} = new_var_name(St0),
+ {#k_var{name=New},St1}.
+
+%% new_vars(Count, State) -> {[#k_var{}],State}.
+%% Make Count new variables.
+
+new_vars(N, St) -> new_vars(N, St, []).
+
+new_vars(N, St0, Vs) when N > 0 ->
+ {V,St1} = new_var(St0),
+ new_vars(N-1, St1, [V|Vs]);
+new_vars(0, St, Vs) -> {Vs,St}.
+
+make_vars(Vs) -> [ #k_var{name=V} || V <- Vs ].
+
+add_var_def(V, St) ->
+ St#kern{ds=sets:add_element(V#k_var.name, St#kern.ds)}.
+
+%%add_vars_def(Vs, St) ->
+%% Ds = foldl(fun (#k_var{name=V}, Ds) -> add_element(V, Ds) end,
+%% St#kern.ds, Vs),
+%% St#kern{ds=Ds}.
+
+%% is_remote_bif(Mod, Name, Arity) -> true | false.
+%% Test if function is really a BIF.
+
+is_remote_bif(erlang, is_boolean, 1) ->
+ %% XXX Remove this clause in R11. For bootstrap purposes, we must
+ %% recognize erlang:is_boolean/1 here.
+ true;
+is_remote_bif(erlang, internal_is_record, 3) -> true;
+is_remote_bif(erlang, get, 1) -> true;
+is_remote_bif(erlang, N, A) ->
+ case erl_internal:guard_bif(N, A) of
+ true -> true;
+ false ->
+ case erl_internal:type_test(N, A) of
+ true -> true;
+ false ->
+ case catch erl_internal:op_type(N, A) of
+ arith -> true;
+ bool -> true;
+ comp -> true;
+ _Other -> false %List, send or not an op
+ end
+ end
+ end;
+is_remote_bif(_, _, _) -> false.
+
+%% bif_vals(Name, Arity) -> integer().
+%% bif_vals(Mod, Name, Arity) -> integer().
+%% Determine how many return values a BIF has. Provision for BIFs to
+%% return multiple values. Only used in bodies where a BIF may be
+%% called for effect only.
+
+bif_vals(dsetelement, 3) -> 0;
+bif_vals(_, _) -> 1.
+
+bif_vals(_, _, _) -> 1.
+
+%% foldr2(Fun, Acc, List1, List2) -> Acc.
+%% Fold over two lists.
+
+foldr2(Fun, Acc0, [E1|L1], [E2|L2]) ->
+ Acc1 = Fun(E1, E2, Acc0),
+ foldr2(Fun, Acc1, L1, L2);
+foldr2(_, Acc, [], []) -> Acc.
+
+%% first([A]) -> [A].
+%% last([A]) -> A.
+
+last([L]) -> L;
+last([_|T]) -> last(T).
+
+first([_]) -> [];
+first([H|T]) -> [H|first(T)].
+
+%% This code implements the algorithm for an optimizing compiler for
+%% pattern matching given "The Implementation of Functional
+%% Programming Languages" by Simon Peyton Jones. The code is much
+%% longer as the meaning of constructors is different from the book.
+%%
+%% In Erlang many constructors can have different values, e.g. 'atom'
+%% or 'integer', whereas in the original algorithm thse would be
+%% different constructors. Our view makes it easier in later passes to
+%% handle indexing over each type.
+%%
+%% Patterns are complicated by having alias variables. The form of a
+%% pattern is Pat | {alias,Pat,[AliasVar]}. This is hidden by access
+%% functions to pattern arguments but the code must be aware of it.
+%%
+%% The compilation proceeds in two steps:
+%%
+%% 1. The patterns in the clauses to converted to lists of kernel
+%% patterns. The Core clause is now hybrid, this is easier to work
+%% with. Remove clauses with trivially false guards, this simplifies
+%% later passes. Add local defined vars and variable subs to each
+%% clause for later use.
+%%
+%% 2. The pattern matching is optimised. Variable substitutions are
+%% added to the VarSub structure and new variables are made visible.
+%% The guard and body are then converted to Kernel form.
+
+%% kmatch([Var], [Clause], Sub, State) -> {Kexpr,[PreExpr],State}.
+
+kmatch(Us, Ccs, Sub, St0) ->
+ {Cs,St1} = match_pre(Ccs, Sub, St0), %Convert clauses
+ %%Def = kernel_match_error, %The strict case
+ %% This should be a kernel expression from the first pass.
+ Def = #k_call{anno=[compiler_generated],
+ op=#k_remote{mod=#k_atom{val=erlang},
+ name=#k_atom{val=exit},
+ arity=1},
+ args=[#k_atom{val=kernel_match_error}]},
+ {Km,St2} = match(Us, Cs, Def, St1), %Do the match.
+ {Km,St2}.
+
+%% match_pre([Cclause], Sub, State) -> {[Clause],State}.
+%% Must be careful not to generate new substitutions here now!
+%% Remove clauses with trivially false guards which will never
+%% succeed.
+
+match_pre(Cs, Sub0, St) ->
+ foldr(fun (#c_clause{anno=A,pats=Ps,guard=G,body=B}, {Cs0,St0}) ->
+ case is_false_guard(G) of
+ true -> {Cs0,St0};
+ false ->
+ {Kps,Sub1,St1} = pattern_list(Ps, Sub0, St0),
+ {[#iclause{anno=A,sub=Sub1,pats=Kps,guard=G,body=B}|
+ Cs0],St1}
+ end
+ end, {[],St}, Cs).
+
+%% match([Var], [Clause], Default, State) -> {MatchExpr,State}.
+
+match([U|Us], Cs, Def, St0) ->
+ %%ok = io:format("match ~p~n", [Cs]),
+ Pcss = partition(Cs),
+ foldr(fun (Pcs, {D,St}) -> match_varcon([U|Us], Pcs, D, St) end,
+ {Def,St0}, Pcss);
+match([], Cs, Def, St) ->
+ match_guard(Cs, Def, St).
+
+%% match_guard([Clause], Default, State) -> {IfExpr,State}.
+%% Build a guard to handle guards. A guard *ALWAYS* fails if no
+%% clause matches, there will be a surrounding 'alt' to catch the
+%% failure. Drop redundant cases, i.e. those after a true guard.
+
+match_guard(Cs0, Def0, St0) ->
+ {Cs1,Def1,St1} = match_guard_1(Cs0, Def0, St0),
+ {build_alt(build_guard(Cs1), Def1),St1}.
+
+match_guard_1([#iclause{anno=A,sub=Sub,guard=G,body=B}|Cs0], Def0, St0) ->
+ case is_true_guard(G) of
+ true ->
+ %% The true clause body becomes the default.
+ {Kb,Pb,St1} = body(B, Sub, St0),
+ Line = get_line(A),
+ St2 = maybe_add_warning(Cs0, Line, St1),
+ St = maybe_add_warning(Def0, Line, St2),
+ {[],pre_seq(Pb, Kb),St};
+ false ->
+ {Kg,St1} = guard(G, Sub, St0),
+ {Kb,Pb,St2} = body(B, Sub, St1),
+ {Cs1,Def1,St3} = match_guard_1(Cs0, Def0, St2),
+ {[#k_guard_clause{guard=Kg,body=pre_seq(Pb, Kb)}|Cs1],
+ Def1,St3}
+ end;
+match_guard_1([], Def, St) -> {[],Def,St}.
+
+maybe_add_warning([C|_], Line, St) ->
+ maybe_add_warning(C, Line, St);
+maybe_add_warning([], _Line, St) -> St;
+maybe_add_warning(fail, _Line, St) -> St;
+maybe_add_warning(Ke, MatchLine, St) ->
+ case get_kanno(Ke) of
+ [compiler_generated|_] -> St;
+ Anno ->
+ Line = get_line(Anno),
+ Warn = case MatchLine of
+ none -> nomatch_shadow;
+ _ -> {nomatch_shadow,MatchLine}
+ end,
+ add_warning(Line, Warn, St)
+ end.
+
+get_line([Line|_]) when is_integer(Line) -> Line;
+get_line([_|T]) -> get_line(T);
+get_line([]) -> none.
+
+
+%% is_true_guard(Guard) -> boolean().
+%% is_false_guard(Guard) -> boolean().
+%% Test if a guard is either trivially true/false. This has probably
+%% already been optimised away, but what the heck!
+
+is_true_guard(G) -> guard_value(G) == true.
+is_false_guard(G) -> guard_value(G) == false.
+
+%% guard_value(Guard) -> true | false | unknown.
+
+guard_value(#c_atom{val=true}) -> true;
+guard_value(#c_atom{val=false}) -> false;
+guard_value(#c_call{module=#c_atom{val=erlang},
+ name=#c_atom{val='not'},
+ args=[A]}) ->
+ case guard_value(A) of
+ true -> false;
+ false -> true;
+ unknown -> unknown
+ end;
+guard_value(#c_call{module=#c_atom{val=erlang},
+ name=#c_atom{val='and'},
+ args=[Ca,Cb]}) ->
+ case guard_value(Ca) of
+ true -> guard_value(Cb);
+ false -> false;
+ unknown ->
+ case guard_value(Cb) of
+ false -> false;
+ _Other -> unknown
+ end
+ end;
+guard_value(#c_call{module=#c_atom{val=erlang},
+ name=#c_atom{val='or'},
+ args=[Ca,Cb]}) ->
+ case guard_value(Ca) of
+ true -> true;
+ false -> guard_value(Cb);
+ unknown ->
+ case guard_value(Cb) of
+ true -> true;
+ _Other -> unknown
+ end
+ end;
+guard_value(#c_try{arg=E,vars=[#c_var{name=X}],body=#c_var{name=X},
+ handler=#c_atom{val=false}}) ->
+ guard_value(E);
+guard_value(_) -> unknown.
+
+%% partition([Clause]) -> [[Clause]].
+%% Partition a list of clauses into groups which either contain
+%% clauses with a variable first argument, or with a "constructor".
+
+partition([C1|Cs]) ->
+ V1 = is_var_clause(C1),
+ {More,Rest} = splitwith(fun (C) -> is_var_clause(C) == V1 end, Cs),
+ [[C1|More]|partition(Rest)];
+partition([]) -> [].
+
+%% match_varcon([Var], [Clause], Def, [Var], Sub, State) ->
+%% {MatchExpr,State}.
+
+match_varcon(Us, [C|_]=Cs, Def, St) ->
+ case is_var_clause(C) of
+ true -> match_var(Us, Cs, Def, St);
+ false -> match_con(Us, Cs, Def, St)
+ end.
+
+%% match_var([Var], [Clause], Def, State) -> {MatchExpr,State}.
+%% Build a call to "select" from a list of clauses all containing a
+%% variable as the first argument. We must rename the variable in
+%% each clause to be the match variable as these clause will share
+%% this variable and may have different names for it. Rename aliases
+%% as well.
+
+match_var([U|Us], Cs0, Def, St) ->
+ Cs1 = map(fun (#iclause{sub=Sub0,pats=[Arg|As]}=C) ->
+ Vs = [arg_arg(Arg)|arg_alias(Arg)],
+ Sub1 = foldl(fun (#k_var{name=V}, Acc) ->
+ subst_vsub(V, U#k_var.name, Acc)
+ end, Sub0, Vs),
+ C#iclause{sub=Sub1,pats=As}
+ end, Cs0),
+ match(Us, Cs1, Def, St).
+
+%% match_con(Variables, [Clause], Default, State) -> {SelectExpr,State}.
+%% Build call to "select" from a list of clauses all containing a
+%% constructor/constant as first argument. Group the constructors
+%% according to type, the order is really irrelevant but tries to be
+%% smart.
+
+match_con([U|Us], Cs, Def, St0) ->
+ %% Extract clauses for different constructors (types).
+ %%ok = io:format("match_con ~p~n", [Cs]),
+ Ttcs = [ {T,Tcs} || T <- [k_cons,k_tuple,k_atom,k_float,k_int,k_nil,
+ k_binary,k_bin_end],
+ begin Tcs = select(T, Cs),
+ Tcs /= []
+ end ] ++ select_bin_con(Cs),
+ %%ok = io:format("ttcs = ~p~n", [Ttcs]),
+ {Scs,St1} =
+ mapfoldl(fun ({T,Tcs}, St) ->
+ {[S|_]=Sc,S1} = match_value([U|Us], T, Tcs, fail, St),
+ %%ok = io:format("match_con type2 ~p~n", [T]),
+ Anno = get_kanno(S),
+ {#k_type_clause{anno=Anno,type=T,values=Sc},S1} end,
+ St0, Ttcs),
+ {build_alt_1st_no_fail(build_select(U, Scs), Def),St1}.
+
+%% select_bin_con([Clause]) -> [{Type,[Clause]}].
+%% Extract clauses for the k_bin_seg constructor. As k_bin_seg
+%% matching can overlap, the k_bin_seg constructors cannot be
+%% reordered, only grouped.
+
+select_bin_con(Cs0) ->
+ Cs1 = lists:filter(fun (C) ->
+ clause_con(C) == k_bin_seg
+ end, Cs0),
+ select_bin_con_1(Cs1).
+
+select_bin_con_1([C1|Cs]) ->
+ Con = clause_con(C1),
+ {More,Rest} = splitwith(fun (C) -> clause_con(C) == Con end, Cs),
+ [{Con,[C1|More]}|select_bin_con_1(Rest)];
+select_bin_con_1([]) -> [].
+
+%% select(Con, [Clause]) -> [Clause].
+
+select(T, Cs) -> [ C || C <- Cs, clause_con(C) == T ].
+
+%% match_value([Var], Con, [Clause], Default, State) -> {SelectExpr,State}.
+%% At this point all the clauses have the same constructor, we must
+%% now separate them according to value.
+
+match_value(_, _, [], _, St) -> {[],St};
+match_value(Us, T, Cs0, Def, St0) ->
+ Css = group_value(T, Cs0),
+ %%ok = io:format("match_value ~p ~p~n", [T, Css]),
+ {Css1,St1} = mapfoldl(fun (Cs, St) ->
+ match_clause(Us, Cs, Def, St) end,
+ St0, Css),
+ {Css1,St1}.
+ %%{#k_select_val{type=T,var=hd(Us),clauses=Css1},St1}.
+
+%% group_value([Clause]) -> [[Clause]].
+%% Group clauses according to value. Here we know that
+%% 1. Some types are singled valued
+%% 2. The clauses in bin_segs cannot be reordered only grouped
+%% 3. Other types are disjoint and can be reordered
+
+group_value(k_cons, Cs) -> [Cs]; %These are single valued
+group_value(k_nil, Cs) -> [Cs];
+group_value(k_binary, Cs) -> [Cs];
+group_value(k_bin_end, Cs) -> [Cs];
+group_value(k_bin_seg, Cs) ->
+ group_bin_seg(Cs);
+group_value(_, Cs) ->
+ %% group_value(Cs).
+ Cd = foldl(fun (C, Gcs0) -> dict:append(clause_val(C), C, Gcs0) end,
+ dict:new(), Cs),
+ dict:fold(fun (_, Vcs, Css) -> [Vcs|Css] end, [], Cd).
+
+group_bin_seg([C1|Cs]) ->
+ V1 = clause_val(C1),
+ {More,Rest} = splitwith(fun (C) -> clause_val(C) == V1 end, Cs),
+ [[C1|More]|group_bin_seg(Rest)];
+group_bin_seg([]) -> [].
+
+%% Profiling shows that this quadratic implementation account for a big amount
+%% of the execution time if there are many values.
+% group_value([C|Cs]) ->
+% V = clause_val(C),
+% Same = [ Cv || Cv <- Cs, clause_val(Cv) == V ], %Same value
+% Rest = [ Cv || Cv <- Cs, clause_val(Cv) /= V ], % and all the rest
+% [[C|Same]|group_value(Rest)];
+% group_value([]) -> [].
+
+%% match_clause([Var], [Clause], Default, State) -> {Clause,State}.
+%% At this point all the clauses have the same "value". Build one
+%% select clause for this value and continue matching. Rename
+%% aliases as well.
+
+match_clause([U|Us], [C|_]=Cs0, Def, St0) ->
+ Anno = get_kanno(C),
+ {Match0,Vs,St1} = get_match(get_con(Cs0), St0),
+ Match = sub_size_var(Match0, Cs0),
+ {Cs1,St2} = new_clauses(Cs0, U, St1),
+ {B,St3} = match(Vs ++ Us, Cs1, Def, St2),
+ {#k_val_clause{anno=Anno,val=Match,body=B},St3}.
+
+sub_size_var(#k_bin_seg{size=#k_var{name=Name}=Kvar}=BinSeg, [#iclause{sub=Sub}|_]) ->
+ BinSeg#k_bin_seg{size=Kvar#k_var{name=get_vsub(Name, Sub)}};
+sub_size_var(K, _) -> K.
+
+get_con([C|_]) -> arg_arg(clause_arg(C)). %Get the constructor
+
+get_match(#k_cons{}, St0) ->
+ {[H,T],St1} = new_vars(2, St0),
+ {#k_cons{hd=H,tl=T},[H,T],St1};
+get_match(#k_binary{}, St0) ->
+ {[V]=Mes,St1} = new_vars(1, St0),
+ {#k_binary{segs=V},Mes,St1};
+get_match(#k_bin_seg{}=Seg, St0) ->
+ {[S,N]=Mes,St1} = new_vars(2, St0),
+ {Seg#k_bin_seg{seg=S,next=N},Mes,St1};
+get_match(#k_tuple{es=Es}, St0) ->
+ {Mes,St1} = new_vars(length(Es), St0),
+ {#k_tuple{es=Mes},Mes,St1};
+get_match(M, St) ->
+ {M,[],St}.
+
+new_clauses(Cs0, U, St) ->
+ Cs1 = map(fun (#iclause{sub=Sub0,pats=[Arg|As]}=C) ->
+ Head = case arg_arg(Arg) of
+ #k_cons{hd=H,tl=T} -> [H,T|As];
+ #k_tuple{es=Es} -> Es ++ As;
+ #k_binary{segs=E} -> [E|As];
+ #k_bin_seg{seg=S,next=N} ->
+ [S,N|As];
+ _Other -> As
+ end,
+ Vs = arg_alias(Arg),
+ Sub1 = foldl(fun (#k_var{name=V}, Acc) ->
+ subst_vsub(V, U#k_var.name, Acc)
+ end, Sub0, Vs),
+ C#iclause{sub=Sub1,pats=Head}
+ end, Cs0),
+ {Cs1,St}.
+
+%% build_guard([GuardClause]) -> GuardExpr.
+
+build_guard([]) -> fail;
+build_guard(Cs) -> #k_guard{clauses=Cs}.
+
+%% build_select(Var, [ConClause]) -> SelectExpr.
+
+build_select(V, [Tc|_]=Tcs) ->
+ Anno = get_kanno(Tc),
+ #k_select{anno=Anno,var=V,types=Tcs}.
+
+%% build_alt(First, Then) -> AltExpr.
+%% Build an alt, attempt some simple optimisation.
+
+build_alt(fail, Then) -> Then;
+build_alt(First,Then) -> build_alt_1st_no_fail(First, Then).
+
+build_alt_1st_no_fail(First, fail) -> First;
+build_alt_1st_no_fail(First, Then) -> #k_alt{first=First,then=Then}.
+
+%% build_match([MatchVar], MatchExpr) -> Kexpr.
+%% Build a match expr if there is a match.
+
+build_match(Us, #k_alt{}=Km) -> #k_match{vars=Us,body=Km};
+build_match(Us, #k_select{}=Km) -> #k_match{vars=Us,body=Km};
+build_match(Us, #k_guard{}=Km) -> #k_match{vars=Us,body=Km};
+build_match(_, Km) -> Km.
+
+%% clause_arg(Clause) -> FirstArg.
+%% clause_con(Clause) -> Constructor.
+%% clause_val(Clause) -> Value.
+%% is_var_clause(Clause) -> boolean().
+
+clause_arg(#iclause{pats=[Arg|_]}) -> Arg.
+
+clause_con(C) -> arg_con(clause_arg(C)).
+
+clause_val(C) -> arg_val(clause_arg(C)).
+
+is_var_clause(C) -> clause_con(C) == k_var.
+
+%% arg_arg(Arg) -> Arg.
+%% arg_alias(Arg) -> Aliases.
+%% arg_con(Arg) -> Constructor.
+%% arg_val(Arg) -> Value.
+%% These are the basic functions for obtaining fields in an argument.
+
+arg_arg(#ialias{pat=Con}) -> Con;
+arg_arg(Con) -> Con.
+
+arg_alias(#ialias{vars=As}) -> As;
+arg_alias(_Con) -> [].
+
+arg_con(Arg) ->
+ case arg_arg(Arg) of
+ #k_int{} -> k_int;
+ #k_float{} -> k_float;
+ #k_atom{} -> k_atom;
+ #k_nil{} -> k_nil;
+ #k_cons{} -> k_cons;
+ #k_tuple{} -> k_tuple;
+ #k_binary{} -> k_binary;
+ #k_bin_end{} -> k_bin_end;
+ #k_bin_seg{} -> k_bin_seg;
+ #k_var{} -> k_var
+ end.
+
+arg_val(Arg) ->
+ case arg_arg(Arg) of
+ #k_int{val=I} -> I;
+ #k_float{val=F} -> F;
+ #k_atom{val=A} -> A;
+ #k_nil{} -> 0;
+ #k_cons{} -> 2;
+ #k_tuple{es=Es} -> length(Es);
+ #k_bin_seg{size=S,unit=U,type=T,flags=Fs} ->
+ {set_kanno(S, []),U,T,Fs};
+ #k_bin_end{} -> 0;
+ #k_binary{} -> 0
+ end.
+
+%% ubody(Expr, Break, State) -> {Expr,[UsedVar],State}.
+%% Tag the body sequence with its used variables. These bodies
+%% either end with a #k_break{}, or with #k_return{} or an expression
+%% which itself can return, #k_enter{}, #k_match{} ... .
+
+ubody(#iset{vars=[],arg=#iletrec{}=Let,body=B0}, Br, St0) ->
+ %% An iletrec{} should never be last.
+ St1 = iletrec_funs(Let, St0),
+ ubody(B0, Br, St1);
+ubody(#iset{anno=A,vars=Vs,arg=E0,body=B0}, Br, St0) ->
+ {E1,Eu,St1} = uexpr(E0, {break,Vs}, St0),
+ {B1,Bu,St2} = ubody(B0, Br, St1),
+ Ns = lit_list_vars(Vs),
+ Used = union(Eu, subtract(Bu, Ns)), %Used external vars
+ {#k_seq{anno=#k{us=Used,ns=Ns,a=A},arg=E1,body=B1},Used,St2};
+ubody(#ivalues{anno=A,args=As}, return, St) ->
+ Au = lit_list_vars(As),
+ {#k_return{anno=#k{us=Au,ns=[],a=A},args=As},Au,St};
+ubody(#ivalues{anno=A,args=As}, {break,_Vbs}, St) ->
+ Au = lit_list_vars(As),
+ {#k_break{anno=#k{us=Au,ns=[],a=A},args=As},Au,St};
+ubody(E, return, St0) ->
+ %% Enterable expressions need no trailing return.
+ case is_enter_expr(E) of
+ true -> uexpr(E, return, St0);
+ false ->
+ {Ea,Pa,St1} = force_atomic(E, St0),
+ ubody(pre_seq(Pa, #ivalues{args=[Ea]}), return, St1)
+ end;
+ubody(E, {break,Rs}, St0) ->
+ %%ok = io:fwrite("ubody ~w:~p~n", [?LINE,{E,Br}]),
+ %% Exiting expressions need no trailing break.
+ case is_exit_expr(E) of
+ true -> uexpr(E, return, St0);
+ false ->
+ {Ea,Pa,St1} = force_atomic(E, St0),
+ ubody(pre_seq(Pa, #ivalues{args=[Ea]}), {break,Rs}, St1)
+ end.
+
+iletrec_funs(#iletrec{defs=Fs}, St0) ->
+ %% Use union of all free variables.
+ %% First just work out free variables for all functions.
+ Free = foldl(fun ({_,#ifun{vars=Vs,body=Fb0}}, Free0) ->
+ {_,Fbu,_} = ubody(Fb0, return, St0),
+ Ns = lit_list_vars(Vs),
+ Free1 = subtract(Fbu, Ns),
+ union(Free1, Free0)
+ end, [], Fs),
+ FreeVs = make_vars(Free),
+ %% Add this free info to State.
+ St1 = foldl(fun ({N,#ifun{vars=Vs}}, Lst) ->
+ store_free(N, length(Vs), FreeVs, Lst)
+ end, St0, Fs),
+ %% Now regenerate local functions to use free variable information.
+ St2 = foldl(fun ({N,#ifun{anno=Fa,vars=Vs,body=Fb0}}, Lst0) ->
+ {Fb1,_,Lst1} = ubody(Fb0, return, Lst0),
+ Arity = length(Vs) + length(FreeVs),
+ Fun = #k_fdef{anno=#k{us=[],ns=[],a=Fa},
+ func=N,arity=Arity,
+ vars=Vs ++ FreeVs,body=Fb1},
+ Lst1#kern{funs=[Fun|Lst1#kern.funs]}
+ end, St1, Fs),
+ St2.
+
+%% is_exit_expr(Kexpr) -> boolean().
+%% Test whether Kexpr always exits and never returns.
+
+is_exit_expr(#k_call{op=#k_remote{mod=erlang,name=throw,arity=1}}) -> true;
+is_exit_expr(#k_call{op=#k_remote{mod=erlang,name=exit,arity=1}}) -> true;
+is_exit_expr(#k_call{op=#k_remote{mod=erlang,name=error,arity=1}}) -> true;
+is_exit_expr(#k_call{op=#k_remote{mod=erlang,name=error,arity=2}}) -> true;
+is_exit_expr(#k_call{op=#k_remote{mod=erlang,name=fault,arity=1}}) -> true;
+is_exit_expr(#k_call{op=#k_remote{mod=erlang,name=fault,arity=2}}) -> true;
+is_exit_expr(#k_call{op=#k_internal{name=match_fail,arity=1}}) -> true;
+is_exit_expr(#k_bif{op=#k_internal{name=rethrow,arity=2}}) -> true;
+is_exit_expr(#k_receive_next{}) -> true;
+is_exit_expr(_) -> false.
+
+%% is_enter_expr(Kexpr) -> boolean().
+%% Test whether Kexpr is "enterable", i.e. can handle return from
+%% within itself without extra #k_return{}.
+
+is_enter_expr(#k_call{}) -> true;
+is_enter_expr(#k_match{}) -> true;
+is_enter_expr(#k_receive{}) -> true;
+is_enter_expr(#k_receive_next{}) -> true;
+%%is_enter_expr(#k_try{}) -> true; %Soon
+is_enter_expr(_) -> false.
+
+%% uguard(Expr, State) -> {Expr,[UsedVar],State}.
+%% Tag the guard sequence with its used variables.
+
+uguard(#k_try{anno=A,arg=B0,vars=[#k_var{name=X}],body=#k_var{name=X},
+ handler=#k_atom{val=false}}=Try, St0) ->
+ {B1,Bu,St1} = uguard(B0, St0),
+ {Try#k_try{anno=#k{us=Bu,ns=[],a=A},arg=B1},Bu,St1};
+uguard(T, St) ->
+ %%ok = io:fwrite("~w: ~p~n", [?LINE,T]),
+ uguard_test(T, St).
+
+%% uguard_test(Expr, State) -> {Test,[UsedVar],State}.
+%% At this stage tests are just expressions which don't return any
+%% values.
+
+uguard_test(T, St) -> uguard_expr(T, [], St).
+
+uguard_expr(#iset{anno=A,vars=Vs,arg=E0,body=B0}, Rs, St0) ->
+ Ns = lit_list_vars(Vs),
+ {E1,Eu,St1} = uguard_expr(E0, Vs, St0),
+ {B1,Bu,St2} = uguard_expr(B0, Rs, St1),
+ Used = union(Eu, subtract(Bu, Ns)),
+ {#k_seq{anno=#k{us=Used,ns=Ns,a=A},arg=E1,body=B1},Used,St2};
+uguard_expr(#k_try{anno=A,arg=B0,vars=[#k_var{name=X}],body=#k_var{name=X},
+ handler=#k_atom{val=false}}=Try, Rs, St0) ->
+ {B1,Bu,St1} = uguard_expr(B0, Rs, St0),
+ {Try#k_try{anno=#k{us=Bu,ns=lit_list_vars(Rs),a=A},arg=B1,ret=Rs},
+ Bu,St1};
+uguard_expr(#k_test{anno=A,op=Op,args=As}=Test, Rs, St) ->
+ [] = Rs, %Sanity check
+ Used = union(op_vars(Op), lit_list_vars(As)),
+ {Test#k_test{anno=#k{us=Used,ns=lit_list_vars(Rs),a=A}},
+ Used,St};
+uguard_expr(#k_bif{anno=A,op=Op,args=As}=Bif, Rs, St) ->
+ Used = union(op_vars(Op), lit_list_vars(As)),
+ {Bif#k_bif{anno=#k{us=Used,ns=lit_list_vars(Rs),a=A},ret=Rs},
+ Used,St};
+uguard_expr(#ivalues{anno=A,args=As}, Rs, St) ->
+ Sets = foldr2(fun (V, Arg, Rhs) ->
+ #iset{anno=A,vars=[V],arg=Arg,body=Rhs}
+ end, #k_atom{val=true}, Rs, As),
+ uguard_expr(Sets, [], St);
+uguard_expr(#k_match{anno=A,vars=Vs,body=B0}, Rs, St0) ->
+ %% Experimental support for andalso/orelse in guards.
+ Br = case Rs of
+ [] -> return;
+ _ -> {break,Rs}
+ end,
+ {B1,Bu,St1} = umatch(B0, Br, St0),
+ {#k_match{anno=#k{us=Bu,ns=lit_list_vars(Rs),a=A},
+ vars=Vs,body=B1,ret=Rs},Bu,St1};
+uguard_expr(Lit, Rs, St) ->
+ %% Transform literals to puts here.
+ Used = lit_vars(Lit),
+ {#k_put{anno=#k{us=Used,ns=lit_list_vars(Rs),a=get_kanno(Lit)},
+ arg=Lit,ret=Rs},Used,St}.
+
+%% uexpr(Expr, Break, State) -> {Expr,[UsedVar],State}.
+%% Tag an expression with its used variables.
+%% Break = return | {break,[RetVar]}.
+
+uexpr(#k_call{anno=A,op=#k_local{name=F,arity=Ar}=Op,args=As0}=Call, Br, St) ->
+ Free = get_free(F, Ar, St),
+ As1 = As0 ++ Free, %Add free variables LAST!
+ Used = lit_list_vars(As1),
+ {case Br of
+ {break,Rs} ->
+ Call#k_call{anno=#k{us=Used,ns=lit_list_vars(Rs),a=A},
+ op=Op#k_local{arity=Ar + length(Free)},
+ args=As1,ret=Rs};
+ return ->
+ #k_enter{anno=#k{us=Used,ns=[],a=A},
+ op=Op#k_local{arity=Ar + length(Free)},
+ args=As1}
+ end,Used,St};
+uexpr(#k_call{anno=A,op=Op,args=As}=Call, {break,Rs}, St) ->
+ Used = union(op_vars(Op), lit_list_vars(As)),
+ {Call#k_call{anno=#k{us=Used,ns=lit_list_vars(Rs),a=A},ret=Rs},
+ Used,St};
+uexpr(#k_call{anno=A,op=Op,args=As}, return, St) ->
+ Used = union(op_vars(Op), lit_list_vars(As)),
+ {#k_enter{anno=#k{us=Used,ns=[],a=A},op=Op,args=As},
+ Used,St};
+uexpr(#k_bif{anno=A,op=Op,args=As}=Bif, {break,Rs}, St0) ->
+ Used = union(op_vars(Op), lit_list_vars(As)),
+ {Brs,St1} = bif_returns(Op, Rs, St0),
+ {Bif#k_bif{anno=#k{us=Used,ns=lit_list_vars(Brs),a=A},ret=Brs},
+ Used,St1};
+uexpr(#k_match{anno=A,vars=Vs,body=B0}, Br, St0) ->
+ Rs = break_rets(Br),
+ {B1,Bu,St1} = umatch(B0, Br, St0),
+ {#k_match{anno=#k{us=Bu,ns=lit_list_vars(Rs),a=A},
+ vars=Vs,body=B1,ret=Rs},Bu,St1};
+uexpr(#k_receive{anno=A,var=V,body=B0,timeout=T,action=A0}, Br, St0) ->
+ Rs = break_rets(Br),
+ Tu = lit_vars(T), %Timeout is atomic
+ {B1,Bu,St1} = umatch(B0, Br, St0),
+ {A1,Au,St2} = ubody(A0, Br, St1),
+ Used = del_element(V#k_var.name, union(Bu, union(Tu, Au))),
+ {#k_receive{anno=#k{us=Used,ns=lit_list_vars(Rs),a=A},
+ var=V,body=B1,timeout=T,action=A1,ret=Rs},
+ Used,St2};
+uexpr(#k_receive_accept{anno=A}, _, St) ->
+ {#k_receive_accept{anno=#k{us=[],ns=[],a=A}},[],St};
+uexpr(#k_receive_next{anno=A}, _, St) ->
+ {#k_receive_next{anno=#k{us=[],ns=[],a=A}},[],St};
+uexpr(#k_try{anno=A,arg=A0,vars=Vs,body=B0,evars=Evs,handler=H0},
+ {break,Rs0}, St0) ->
+ {Avs,St1} = new_vars(length(Vs), St0), %Need dummy names here
+ {A1,Au,St2} = ubody(A0, {break,Avs}, St1), %Must break to clean up here!
+ {B1,Bu,St3} = ubody(B0, {break,Rs0}, St2),
+ {H1,Hu,St4} = ubody(H0, {break,Rs0}, St3),
+ %% Guarantee ONE return variable.
+ NumNew = if
+ Rs0 =:= [] -> 1;
+ true -> 0
+ end,
+ {Ns,St5} = new_vars(NumNew, St4),
+ Rs1 = Rs0 ++ Ns,
+ Used = union([Au,subtract(Bu, lit_list_vars(Vs)),
+ subtract(Hu, lit_list_vars(Evs))]),
+ {#k_try{anno=#k{us=Used,ns=lit_list_vars(Rs1),a=A},
+ arg=A1,vars=Vs,body=B1,evars=Evs,handler=H1,ret=Rs1},
+ Used,St5};
+uexpr(#k_catch{anno=A,body=B0}, {break,Rs0}, St0) ->
+ {Rb,St1} = new_var(St0),
+ {B1,Bu,St2} = ubody(B0, {break,[Rb]}, St1),
+ %% Guarantee ONE return variable.
+ {Ns,St3} = new_vars(1 - length(Rs0), St2),
+ Rs1 = Rs0 ++ Ns,
+ {#k_catch{anno=#k{us=Bu,ns=lit_list_vars(Rs1),a=A},body=B1,ret=Rs1},Bu,St3};
+uexpr(#ifun{anno=A,vars=Vs,body=B0}=IFun, {break,Rs}, St0) ->
+ {B1,Bu,St1} = ubody(B0, return, St0), %Return out of new function
+ Ns = lit_list_vars(Vs),
+ Free = subtract(Bu, Ns), %Free variables in fun
+ Fvs = make_vars(Free),
+ Arity = length(Vs) + length(Free),
+ {{Index,Uniq,Fname}, St3} =
+ case lists:keysearch(id, 1, A) of
+ {value,{id,Id}} ->
+ {Id, St1};
+ false ->
+ %% No id annotation. Must invent one.
+ I = St1#kern.fcount,
+ U = erlang:hash(IFun, (1 bsl 27)-1),
+ {N, St2} = new_fun_name(St1),
+ {{I,U,N}, St2}
+ end,
+ Fun = #k_fdef{anno=#k{us=[],ns=[],a=A},func=Fname,arity=Arity,
+ vars=Vs ++ Fvs,body=B1},
+ {#k_bif{anno=#k{us=Free,ns=lit_list_vars(Rs),a=A},
+ op=#k_internal{name=make_fun,arity=length(Free)+3},
+ args=[#k_atom{val=Fname},#k_int{val=Arity},
+ #k_int{val=Index},#k_int{val=Uniq}|Fvs],
+ ret=Rs},
+% {#k_call{anno=#k{us=Free,ns=lit_list_vars(Rs),a=A},
+% op=#k_internal{name=make_fun,arity=length(Free)+3},
+% args=[#k_atom{val=Fname},#k_int{val=Arity},
+% #k_int{val=Index},#k_int{val=Uniq}|Fvs],
+% ret=Rs},
+ Free,St3#kern{funs=[Fun|St3#kern.funs]}};
+uexpr(Lit, {break,Rs}, St) ->
+ %% Transform literals to puts here.
+ %%ok = io:fwrite("uexpr ~w:~p~n", [?LINE,Lit]),
+ Used = lit_vars(Lit),
+ {#k_put{anno=#k{us=Used,ns=lit_list_vars(Rs),a=get_kanno(Lit)},
+ arg=Lit,ret=Rs},Used,St}.
+
+%% get_free(Name, Arity, State) -> [Free].
+%% store_free(Name, Arity, [Free], State) -> State.
+
+get_free(F, A, St) ->
+ case orddict:find({F,A}, St#kern.free) of
+ {ok,Val} -> Val;
+ error -> []
+ end.
+
+store_free(F, A, Free, St) ->
+ St#kern{free=orddict:store({F,A}, Free, St#kern.free)}.
+
+break_rets({break,Rs}) -> Rs;
+break_rets(return) -> [].
+
+%% bif_returns(Op, [Ret], State) -> {[Ret],State}.
+
+bif_returns(#k_remote{mod=M,name=N,arity=Ar}, Rs, St0) ->
+ %%ok = io:fwrite("uexpr ~w:~p~n", [?LINE,{M,N,Ar,Rs}]),
+ {Ns,St1} = new_vars(bif_vals(M, N, Ar) - length(Rs), St0),
+ {Rs ++ Ns,St1};
+bif_returns(#k_internal{name=N,arity=Ar}, Rs, St0) ->
+ %%ok = io:fwrite("uexpr ~w:~p~n", [?LINE,{N,Ar,Rs}]),
+ {Ns,St1} = new_vars(bif_vals(N, Ar) - length(Rs), St0),
+ {Rs ++ Ns,St1}.
+
+%% umatch(Match, Break, State) -> {Match,[UsedVar],State}.
+%% Tag a match expression with its used variables.
+
+umatch(#k_alt{anno=A,first=F0,then=T0}, Br, St0) ->
+ {F1,Fu,St1} = umatch(F0, Br, St0),
+ {T1,Tu,St2} = umatch(T0, Br, St1),
+ Used = union(Fu, Tu),
+ {#k_alt{anno=#k{us=Used,ns=[],a=A},first=F1,then=T1},
+ Used,St2};
+umatch(#k_select{anno=A,var=V,types=Ts0}, Br, St0) ->
+ {Ts1,Tus,St1} = umatch_list(Ts0, Br, St0),
+ Used = add_element(V#k_var.name, Tus),
+ {#k_select{anno=#k{us=Used,ns=[],a=A},var=V,types=Ts1},Used,St1};
+umatch(#k_type_clause{anno=A,type=T,values=Vs0}, Br, St0) ->
+ {Vs1,Vus,St1} = umatch_list(Vs0, Br, St0),
+ {#k_type_clause{anno=#k{us=Vus,ns=[],a=A},type=T,values=Vs1},Vus,St1};
+umatch(#k_val_clause{anno=A,val=P,body=B0}, Br, St0) ->
+ {U0,Ps} = pat_vars(P),
+ {B1,Bu,St1} = umatch(B0, Br, St0),
+ Used = union(U0, subtract(Bu, Ps)),
+ {#k_val_clause{anno=#k{us=Used,ns=[],a=A},val=P,body=B1},
+ Used,St1};
+umatch(#k_guard{anno=A,clauses=Gs0}, Br, St0) ->
+ {Gs1,Gus,St1} = umatch_list(Gs0, Br, St0),
+ {#k_guard{anno=#k{us=Gus,ns=[],a=A},clauses=Gs1},Gus,St1};
+umatch(#k_guard_clause{anno=A,guard=G0,body=B0}, Br, St0) ->
+ %%ok = io:fwrite("~w: ~p~n", [?LINE,G0]),
+ {G1,Gu,St1} = uguard(G0, St0),
+ %%ok = io:fwrite("~w: ~p~n", [?LINE,G1]),
+ {B1,Bu,St2} = umatch(B0, Br, St1),
+ Used = union(Gu, Bu),
+ {#k_guard_clause{anno=#k{us=Used,ns=[],a=A},guard=G1,body=B1},Used,St2};
+umatch(B0, Br, St0) -> ubody(B0, Br, St0).
+
+umatch_list(Ms0, Br, St) ->
+ foldr(fun (M0, {Ms1,Us,Sta}) ->
+ {M1,Mu,Stb} = umatch(M0, Br, Sta),
+ {[M1|Ms1],union(Mu, Us),Stb}
+ end, {[],[],St}, Ms0).
+
+%% op_vars(Op) -> [VarName].
+
+op_vars(#k_local{}) -> [];
+op_vars(#k_remote{mod=Mod,name=Name}) ->
+ ordsets:from_list([V || #k_var{name=V} <- [Mod,Name]]);
+op_vars(#k_internal{}) -> [];
+op_vars(Atomic) -> lit_vars(Atomic).
+
+%% lit_vars(Literal) -> [VarName].
+%% Return the variables in a literal.
+
+lit_vars(#k_var{name=N}) -> [N];
+lit_vars(#k_int{}) -> [];
+lit_vars(#k_float{}) -> [];
+lit_vars(#k_atom{}) -> [];
+%%lit_vars(#k_char{}) -> [];
+lit_vars(#k_string{}) -> [];
+lit_vars(#k_nil{}) -> [];
+lit_vars(#k_cons{hd=H,tl=T}) ->
+ union(lit_vars(H), lit_vars(T));
+lit_vars(#k_binary{segs=V}) -> lit_vars(V);
+lit_vars(#k_bin_end{}) -> [];
+lit_vars(#k_bin_seg{size=Size,seg=S,next=N}) ->
+ union(lit_vars(Size), union(lit_vars(S), lit_vars(N)));
+lit_vars(#k_tuple{es=Es}) ->
+ lit_list_vars(Es).
+
+lit_list_vars(Ps) ->
+ foldl(fun (P, Vs) -> union(lit_vars(P), Vs) end, [], Ps).
+
+%% pat_vars(Pattern) -> {[UsedVarName],[NewVarName]}.
+%% Return variables in a pattern. All variables are new variables
+%% except those in the size field of binary segments.
+
+pat_vars(#k_var{name=N}) -> {[],[N]};
+%%pat_vars(#k_char{}) -> {[],[]};
+pat_vars(#k_int{}) -> {[],[]};
+pat_vars(#k_float{}) -> {[],[]};
+pat_vars(#k_atom{}) -> {[],[]};
+pat_vars(#k_string{}) -> {[],[]};
+pat_vars(#k_nil{}) -> {[],[]};
+pat_vars(#k_cons{hd=H,tl=T}) ->
+ pat_list_vars([H,T]);
+pat_vars(#k_binary{segs=V}) ->
+ pat_vars(V);
+pat_vars(#k_bin_seg{size=Size,seg=S,next=N}) ->
+ {U1,New} = pat_list_vars([S,N]),
+ {[],U2} = pat_vars(Size),
+ {union(U1, U2),New};
+pat_vars(#k_bin_end{}) -> {[],[]};
+pat_vars(#k_tuple{es=Es}) ->
+ pat_list_vars(Es).
+
+pat_list_vars(Ps) ->
+ foldl(fun (P, {Used0,New0}) ->
+ {Used,New} = pat_vars(P),
+ {union(Used0, Used),union(New0, New)} end,
+ {[],[]}, Ps).
+
+%% aligned(Bits, Size, Unit, Flags) -> {Size,Flags}
+%% Add 'aligned' to the flags if the current field is aligned.
+%% Number of bits correct modulo 8.
+
+aligned(B, S, U, Fs) when B rem 8 =:= 0 ->
+ {incr_bits(B, S, U),[aligned|Fs]};
+aligned(B, S, U, Fs) ->
+ {incr_bits(B, S, U),Fs}.
+
+incr_bits(B, #k_int{val=S}, U) when integer(B) -> B + S*U;
+incr_bits(_, #k_atom{val=all}, _) -> 0; %Always aligned
+incr_bits(B, _, 8) -> B;
+incr_bits(_, _, _) -> unknown.
+
+make_list(Es) ->
+ foldr(fun (E, Acc) -> #c_cons{hd=E,tl=Acc} end, #c_nil{}, Es).
+
+%% List of integers in interval [N,M]. Empty list if N > M.
+
+integers(N, M) when N =< M ->
+ [N|integers(N + 1, M)];
+integers(_, _) -> [].
+
+%%%
+%%% Handling of warnings.
+%%%
+
+format_error({nomatch_shadow,Line}) ->
+ M = io_lib:format("this clause cannot match because a previous clause at line ~p "
+ "always matches", [Line]),
+ lists:flatten(M);
+format_error(nomatch_shadow) ->
+ "this clause cannot match because a previous clause always matches".
+
+add_warning(none, Term, #kern{ws=Ws}=St) ->
+ St#kern{ws=[{?MODULE,Term}|Ws]};
+add_warning(Line, Term, #kern{ws=Ws}=St) when Line >= 0 ->
+ St#kern{ws=[{Line,?MODULE,Term}|Ws]};
+add_warning(_, _, St) -> St.
+
diff --git a/lib/dialyzer/test/options1_tests_SUITE_data/src/compiler/v3_kernel.hrl b/lib/dialyzer/test/options1_tests_SUITE_data/src/compiler/v3_kernel.hrl
new file mode 100644
index 0000000000..822a9e34e1
--- /dev/null
+++ b/lib/dialyzer/test/options1_tests_SUITE_data/src/compiler/v3_kernel.hrl
@@ -0,0 +1,77 @@
+%% ``The contents of this file are subject to the Erlang Public License,
+%% Version 1.1, (the "License"); you may not use this file except in
+%% compliance with the License. You should have received a copy of the
+%% Erlang Public License along with this software. If not, it can be
+%% retrieved via the world wide web at http://www.erlang.org/.
+%%
+%% Software distributed under the License is distributed on an "AS IS"
+%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
+%% the License for the specific language governing rights and limitations
+%% under the License.
+%%
+%% The Initial Developer of the Original Code is Ericsson Utvecklings AB.
+%% Portions created by Ericsson are Copyright 1999, Ericsson Utvecklings
+%% AB. All Rights Reserved.''
+%%
+%% $Id: v3_kernel.hrl,v 1.1 2008/12/17 09:53:43 mikpe Exp $
+%%
+
+%% Purpose : Kernel Erlang as records.
+
+%% It would be nice to incorporate some generic functions as well but
+%% this could make including this file difficult.
+%% N.B. the annotation field is ALWAYS the first field!
+
+%% Kernel annotation record.
+-record(k, {us, %Used variables
+ ns, %New variables
+ a}). %Core annotation
+
+%% Literals
+%% NO CHARACTERS YET.
+%%-record(k_char, {anno=[],val}).
+-record(k_int, {anno=[],val}).
+-record(k_float, {anno=[],val}).
+-record(k_atom, {anno=[],val}).
+-record(k_string, {anno=[],val}).
+-record(k_nil, {anno=[]}).
+
+-record(k_tuple, {anno=[],es}).
+-record(k_cons, {anno=[],hd,tl}).
+-record(k_binary, {anno=[],segs}).
+-record(k_bin_seg, {anno=[],size,unit,type,flags,seg,next}).
+-record(k_bin_end, {anno=[]}).
+-record(k_var, {anno=[],name}).
+
+-record(k_local, {anno=[],name,arity}).
+-record(k_remote, {anno=[],mod,name,arity}).
+-record(k_internal, {anno=[],name,arity}).
+
+-record(k_mdef, {anno=[],name,exports,attributes,body}).
+-record(k_fdef, {anno=[],func,arity,vars,body}).
+
+-record(k_seq, {anno=[],arg,body}).
+-record(k_put, {anno=[],arg,ret=[]}).
+-record(k_bif, {anno=[],op,args,ret=[]}).
+-record(k_test, {anno=[],op,args}).
+-record(k_call, {anno=[],op,args,ret=[]}).
+-record(k_enter, {anno=[],op,args}).
+-record(k_receive, {anno=[],var,body,timeout,action,ret=[]}).
+-record(k_receive_accept, {anno=[]}).
+-record(k_receive_next, {anno=[]}).
+-record(k_try, {anno=[],arg,vars,body,evars,handler,ret=[]}).
+-record(k_catch, {anno=[],body,ret=[]}).
+
+-record(k_match, {anno=[],vars,body,ret=[]}).
+-record(k_alt, {anno=[],first,then}).
+-record(k_select, {anno=[],var,types}).
+-record(k_type_clause, {anno=[],type,values}).
+-record(k_val_clause, {anno=[],val,body}).
+-record(k_guard, {anno=[],clauses}).
+-record(k_guard_clause, {anno=[],guard,body}).
+
+-record(k_break, {anno=[],args=[]}).
+-record(k_return, {anno=[],args=[]}).
+
+%%k_get_anno(Thing) -> element(2, Thing).
+%%k_set_anno(Thing, Anno) -> setelement(2, Thing, Anno).
diff --git a/lib/dialyzer/test/options1_tests_SUITE_data/src/compiler/v3_kernel_pp.erl b/lib/dialyzer/test/options1_tests_SUITE_data/src/compiler/v3_kernel_pp.erl
new file mode 100644
index 0000000000..92ff173834
--- /dev/null
+++ b/lib/dialyzer/test/options1_tests_SUITE_data/src/compiler/v3_kernel_pp.erl
@@ -0,0 +1,444 @@
+%% ``The contents of this file are subject to the Erlang Public License,
+%% Version 1.1, (the "License"); you may not use this file except in
+%% compliance with the License. You should have received a copy of the
+%% Erlang Public License along with this software. If not, it can be
+%% retrieved via the world wide web at http://www.erlang.org/.
+%%
+%% Software distributed under the License is distributed on an "AS IS"
+%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
+%% the License for the specific language governing rights and limitations
+%% under the License.
+%%
+%% The Initial Developer of the Original Code is Ericsson Utvecklings AB.
+%% Portions created by Ericsson are Copyright 1999, Ericsson Utvecklings
+%% AB. All Rights Reserved.''
+%%
+%% $Id: v3_kernel_pp.erl,v 1.1 2008/12/17 09:53:43 mikpe Exp $
+%%
+%% Purpose : Kernel Erlang (naive) prettyprinter
+
+-module(v3_kernel_pp).
+
+-include("v3_kernel.hrl").
+
+-export([format/1]).
+
+%% These are "internal" structures in sys_kernel which are here for
+%% debugging purposes.
+-record(iset, {anno=[],vars,arg,body}).
+-record(ifun, {anno=[],vars,body}).
+
+%% ====================================================================== %%
+%% format(Node) -> Text
+%% Node = coreErlang()
+%% Text = string() | [Text]
+%%
+%% Prettyprint-formats (naively) an abstract Core Erlang syntax
+%% tree.
+
+-record(ctxt, {indent = 0,
+ item_indent = 2,
+ body_indent = 2,
+ tab_width = 8}).
+
+canno(Cthing) -> element(2, Cthing).
+
+format(Node) -> format(Node, #ctxt{}).
+
+format(Node, Ctxt) ->
+ case canno(Node) of
+ [] ->
+ format_1(Node, Ctxt);
+ List ->
+ format_anno(List, Ctxt, fun (Ctxt1) -> format_1(Node, Ctxt1) end)
+ end.
+
+format_anno(Anno, Ctxt, ObjFun) ->
+ Ctxt1 = ctxt_bump_indent(Ctxt, 2),
+ ["( ",
+ ObjFun(Ctxt1),
+ nl_indent(Ctxt1),
+ "-| ",io_lib:write(Anno),
+ " )"].
+
+%% format_1(Kexpr, Context) -> string().
+
+format_1(#k_atom{val=A}, _Ctxt) -> core_atom(A);
+%%format_1(#k_char{val=C}, _Ctxt) -> io_lib:write_char(C);
+format_1(#k_float{val=F}, _Ctxt) -> float_to_list(F);
+format_1(#k_int{val=I}, _Ctxt) -> integer_to_list(I);
+format_1(#k_nil{}, _Ctxt) -> "[]";
+format_1(#k_string{val=S}, _Ctxt) -> io_lib:write_string(S);
+format_1(#k_var{name=V}, _Ctxt) ->
+ if atom(V) ->
+ case atom_to_list(V) of
+ [$_|Cs] -> "_X" ++ Cs;
+ [C|Cs] when C >= $A, C =< $Z -> [C|Cs];
+ Cs -> [$_|Cs]
+ end;
+ integer(V) -> [$_|integer_to_list(V)]
+ end;
+format_1(#k_cons{hd=H,tl=T}, Ctxt) ->
+ Txt = ["["|format(H, ctxt_bump_indent(Ctxt, 1))],
+ [Txt|format_list_tail(T, ctxt_bump_indent(Ctxt, width(Txt, Ctxt)))];
+format_1(#k_tuple{es=Es}, Ctxt) ->
+ [${,
+ format_hseq(Es, ",", ctxt_bump_indent(Ctxt, 1), fun format/2),
+ $}
+ ];
+format_1(#k_binary{segs=S}, Ctxt) ->
+ ["#<",format(S, ctxt_bump_indent(Ctxt, 2)),">#"];
+format_1(#k_bin_seg{}=S, Ctxt) ->
+ [format_bin_seg_1(S, Ctxt),
+ format_bin_seg(S#k_bin_seg.next, ctxt_bump_indent(Ctxt, 2))];
+format_1(#k_bin_end{}, _Ctxt) -> "#<>#";
+format_1(#k_local{name=N,arity=A}, Ctxt) ->
+ "local " ++ format_fa_pair({N,A}, Ctxt);
+format_1(#k_remote{mod=M,name=N,arity=A}, _Ctxt) ->
+ %% This is for our internal translator.
+ io_lib:format("remote ~s:~s/~w", [format(M),format(N),A]);
+format_1(#k_internal{name=N,arity=A}, Ctxt) ->
+ "internal " ++ format_fa_pair({N,A}, Ctxt);
+format_1(#k_seq{arg=A,body=B}, Ctxt) ->
+ Ctxt1 = ctxt_bump_indent(Ctxt, 2),
+ ["do",
+ nl_indent(Ctxt1),
+ format(A, Ctxt1),
+ nl_indent(Ctxt),
+ "then",
+ nl_indent(Ctxt)
+ | format(B, Ctxt)
+ ];
+format_1(#k_match{vars=Vs,body=Bs,ret=Rs}, Ctxt) ->
+ Ctxt1 = ctxt_bump_indent(Ctxt, Ctxt#ctxt.item_indent),
+ ["match ",
+ format_hseq(Vs, ",", ctxt_bump_indent(Ctxt, 6), fun format/2),
+ nl_indent(Ctxt1),
+ format(Bs, Ctxt1),
+ nl_indent(Ctxt),
+ "end",
+ format_ret(Rs, Ctxt1)
+ ];
+format_1(#k_alt{first=O,then=T}, Ctxt) ->
+ Ctxt1 = ctxt_bump_indent(Ctxt, Ctxt#ctxt.item_indent),
+ ["alt",
+ nl_indent(Ctxt1),
+ format(O, Ctxt1),
+ nl_indent(Ctxt1),
+ format(T, Ctxt1)];
+format_1(#k_select{var=V,types=Cs}, Ctxt) ->
+ Ctxt1 = ctxt_bump_indent(Ctxt, 2),
+ ["select ",
+ format(V, Ctxt),
+ nl_indent(Ctxt1),
+ format_vseq(Cs, "", "", Ctxt1, fun format/2)
+ ];
+format_1(#k_type_clause{type=T,values=Cs}, Ctxt) ->
+ Ctxt1 = ctxt_bump_indent(Ctxt, Ctxt#ctxt.body_indent),
+ ["type ",
+ io_lib:write(T),
+ nl_indent(Ctxt1),
+ format_vseq(Cs, "", "", Ctxt1, fun format/2)
+ ];
+format_1(#k_val_clause{val=Val,body=B}, Ctxt) ->
+ Ctxt1 = ctxt_bump_indent(Ctxt, Ctxt#ctxt.body_indent),
+ [format(Val, Ctxt),
+ " ->",
+ nl_indent(Ctxt1)
+ | format(B, Ctxt1)
+ ];
+format_1(#k_guard{clauses=Gs}, Ctxt) ->
+ Ctxt1 = ctxt_bump_indent(Ctxt, 5),
+ ["when ",
+ nl_indent(Ctxt1),
+ format_vseq(Gs, "", "", Ctxt1, fun format/2)];
+format_1(#k_guard_clause{guard=G,body=B}, Ctxt) ->
+ Ctxt1 = ctxt_bump_indent(Ctxt, Ctxt#ctxt.body_indent),
+ [format(G, Ctxt),
+ nl_indent(Ctxt),
+ "->",
+ nl_indent(Ctxt1)
+ | format(B, Ctxt1)
+ ];
+format_1(#k_call{op=Op,args=As,ret=Rs}, Ctxt) ->
+ Txt = ["call (",format(Op, ctxt_bump_indent(Ctxt, 6)),$)],
+ Ctxt1 = ctxt_bump_indent(Ctxt, 2),
+ [Txt,format_args(As, Ctxt1),
+ format_ret(Rs, Ctxt1)
+ ];
+format_1(#k_enter{op=Op,args=As}, Ctxt) ->
+ Txt = ["enter (",format(Op, ctxt_bump_indent(Ctxt, 7)),$)],
+ Ctxt1 = ctxt_bump_indent(Ctxt, 2),
+ [Txt,format_args(As, Ctxt1)];
+format_1(#k_bif{op=Op,args=As,ret=Rs}, Ctxt) ->
+ Txt = ["bif (",format(Op, ctxt_bump_indent(Ctxt, 5)),$)],
+ Ctxt1 = ctxt_bump_indent(Ctxt, 2),
+ [Txt,format_args(As, Ctxt1),
+ format_ret(Rs, Ctxt1)
+ ];
+format_1(#k_test{op=Op,args=As}, Ctxt) ->
+ Txt = ["test (",format(Op, ctxt_bump_indent(Ctxt, 6)),$)],
+ Ctxt1 = ctxt_bump_indent(Ctxt, 2),
+ [Txt,format_args(As, Ctxt1)];
+format_1(#k_put{arg=A,ret=Rs}, Ctxt) ->
+ [format(A, Ctxt),
+ format_ret(Rs, ctxt_bump_indent(Ctxt, 1))
+ ];
+format_1(#k_try{arg=A,vars=Vs,body=B,evars=Evs,handler=H,ret=Rs}, Ctxt) ->
+ Ctxt1 = ctxt_bump_indent(Ctxt, Ctxt#ctxt.body_indent),
+ ["try",
+ nl_indent(Ctxt1),
+ format(A, Ctxt1),
+ nl_indent(Ctxt),
+ "of ",
+ format_hseq(Vs, ", ", ctxt_bump_indent(Ctxt, 3), fun format/2),
+ nl_indent(Ctxt1),
+ format(B, Ctxt1),
+ nl_indent(Ctxt),
+ "catch ",
+ format_hseq(Evs, ", ", ctxt_bump_indent(Ctxt, 6), fun format/2),
+ nl_indent(Ctxt1),
+ format(H, Ctxt1),
+ nl_indent(Ctxt),
+ "end",
+ format_ret(Rs, Ctxt1)
+ ];
+format_1(#k_catch{body=B,ret=Rs}, Ctxt) ->
+ Ctxt1 = ctxt_bump_indent(Ctxt, Ctxt#ctxt.body_indent),
+ ["catch",
+ nl_indent(Ctxt1),
+ format(B, Ctxt1),
+ nl_indent(Ctxt),
+ "end",
+ format_ret(Rs, Ctxt1)
+ ];
+format_1(#k_receive{var=V,body=B,timeout=T,action=A,ret=Rs}, Ctxt) ->
+ Ctxt1 = ctxt_bump_indent(Ctxt, Ctxt#ctxt.item_indent),
+ ["receive ",
+ format(V, Ctxt),
+ nl_indent(Ctxt1),
+ format(B, Ctxt1),
+ nl_indent(Ctxt),
+ "after ",
+ format(T, ctxt_bump_indent(Ctxt, 6)),
+ " ->",
+ nl_indent(Ctxt1),
+ format(A, Ctxt1),
+ nl_indent(Ctxt),
+ "end",
+ format_ret(Rs, Ctxt1)
+ ];
+format_1(#k_receive_accept{}, _Ctxt) -> "receive_accept";
+format_1(#k_receive_next{}, _Ctxt) -> "receive_next";
+format_1(#k_break{args=As}, Ctxt) ->
+ ["<",
+ format_hseq(As, ",", ctxt_bump_indent(Ctxt, 1), fun format/2),
+ ">"
+ ];
+format_1(#k_return{args=As}, Ctxt) ->
+ ["<<",
+ format_hseq(As, ",", ctxt_bump_indent(Ctxt, 1), fun format/2),
+ ">>"
+ ];
+format_1(#k_fdef{func=F,arity=A,vars=Vs,body=B}, Ctxt) ->
+ Ctxt1 = ctxt_bump_indent(Ctxt, Ctxt#ctxt.body_indent),
+ ["fdef ",
+ format_fa_pair({F,A}, ctxt_bump_indent(Ctxt, 5)),
+ format_args(Vs, ctxt_bump_indent(Ctxt, 14)),
+ " =",
+ nl_indent(Ctxt1),
+ format(B, Ctxt1)
+ ];
+format_1(#k_mdef{name=N,exports=Es,attributes=As,body=B}, Ctxt) ->
+ ["module ",
+ format(#k_atom{val=N}, ctxt_bump_indent(Ctxt, 7)),
+ nl_indent(Ctxt),
+ "export [",
+ format_vseq(Es,
+ "", ",",
+ ctxt_bump_indent(Ctxt, 8),
+ fun format_fa_pair/2),
+ "]",
+ nl_indent(Ctxt),
+ "attributes [",
+ format_vseq(As,
+ "", ",",
+ ctxt_bump_indent(Ctxt, 12),
+ fun format_attribute/2),
+ "]",
+ nl_indent(Ctxt),
+ format_vseq(B,
+ "", "",
+ Ctxt,
+ fun format/2),
+ nl_indent(Ctxt)
+ | "end"
+ ];
+%% Internal sys_kernel structures.
+format_1(#iset{vars=Vs,arg=A,body=B}, Ctxt) ->
+ Ctxt1 = ctxt_bump_indent(Ctxt, Ctxt#ctxt.body_indent),
+ ["set <",
+ format_hseq(Vs, ", ", ctxt_bump_indent(Ctxt, 5), fun format/2),
+ "> =",
+ nl_indent(Ctxt1),
+ format(A, Ctxt1),
+ nl_indent(Ctxt),
+ "in "
+ | format(B, ctxt_bump_indent(Ctxt, 2))
+ ];
+format_1(#ifun{vars=Vs,body=B}, Ctxt) ->
+ Ctxt1 = ctxt_bump_indent(Ctxt, Ctxt#ctxt.body_indent),
+ ["fun ",
+ format_args(Vs, ctxt_bump_indent(Ctxt, 4)),
+ " ->",
+ nl_indent(Ctxt1)
+ | format(B, Ctxt1)
+ ];
+format_1(Type, _Ctxt) ->
+ ["** Unsupported type: ",
+ io_lib:write(Type)
+ | " **"
+ ].
+
+%% format_ret([RetVar], Context) -> Txt.
+%% Format the return vars of kexpr.
+
+format_ret(Rs, Ctxt) ->
+ [" >> ",
+ "<",
+ format_hseq(Rs, ",", ctxt_bump_indent(Ctxt, 5), fun format/2),
+ ">"].
+
+%% format_args([Arg], Context) -> Txt.
+%% Format arguments.
+
+format_args(As, Ctxt) ->
+ [$(,format_hseq(As, ", ", ctxt_bump_indent(Ctxt, 1), fun format/2),$)].
+
+%% format_hseq([Thing], Separator, Context, Fun) -> Txt.
+%% Format a sequence horizontally.
+
+format_hseq([H], _Sep, Ctxt, Fun) ->
+ Fun(H, Ctxt);
+format_hseq([H|T], Sep, Ctxt, Fun) ->
+ Txt = [Fun(H, Ctxt)|Sep],
+ Ctxt1 = ctxt_bump_indent(Ctxt, width(Txt, Ctxt)),
+ [Txt|format_hseq(T, Sep, Ctxt1, Fun)];
+format_hseq([], _, _, _) -> "".
+
+%% format_vseq([Thing], LinePrefix, LineSuffix, Context, Fun) -> Txt.
+%% Format a sequence vertically.
+
+format_vseq([H], _Pre, _Suf, Ctxt, Fun) ->
+ Fun(H, Ctxt);
+format_vseq([H|T], Pre, Suf, Ctxt, Fun) ->
+ [Fun(H, Ctxt),Suf,nl_indent(Ctxt),Pre|
+ format_vseq(T, Pre, Suf, Ctxt, Fun)];
+format_vseq([], _, _, _, _) -> "".
+
+format_fa_pair({F,A}, _Ctxt) -> [core_atom(F),$/,integer_to_list(A)].
+
+%% format_attribute({Name,Val}, Context) -> Txt.
+
+format_attribute({Name,Val}, Ctxt) when list(Val) ->
+ Txt = format(#k_atom{val=Name}, Ctxt),
+ Ctxt1 = ctxt_bump_indent(Ctxt, width(Txt,Ctxt)+4),
+ [Txt," = ",
+ $[,format_vseq(Val, "", ",", Ctxt1,
+ fun (A, _C) -> io_lib:write(A) end),$]
+ ];
+format_attribute({Name,Val}, Ctxt) ->
+ Txt = format(#k_atom{val=Name}, Ctxt),
+ [Txt," = ",io_lib:write(Val)].
+
+format_list_tail(#k_nil{anno=[]}, _Ctxt) -> "]";
+format_list_tail(#k_cons{anno=[],hd=H,tl=T}, Ctxt) ->
+ Txt = [$,|format(H, Ctxt)],
+ Ctxt1 = ctxt_bump_indent(Ctxt, width(Txt, Ctxt)),
+ [Txt|format_list_tail(T, Ctxt1)];
+format_list_tail(Tail, Ctxt) ->
+ ["|",format(Tail, ctxt_bump_indent(Ctxt, 1)), "]"].
+
+format_bin_seg(#k_bin_end{anno=[]}, _Ctxt) -> "";
+format_bin_seg(#k_bin_seg{anno=[],next=N}=Seg, Ctxt) ->
+ Txt = [$,|format_bin_seg_1(Seg, Ctxt)],
+ [Txt|format_bin_seg(N, ctxt_bump_indent(Ctxt, width(Txt, Ctxt)))];
+format_bin_seg(Seg, Ctxt) ->
+ ["|",format(Seg, ctxt_bump_indent(Ctxt, 2))].
+
+format_bin_seg_1(#k_bin_seg{size=S,unit=U,type=T,flags=Fs,seg=Seg}, Ctxt) ->
+ [format(Seg, Ctxt),
+ ":",format(S, Ctxt),"*",io_lib:write(U),
+ ":",io_lib:write(T),
+ lists:map(fun (F) -> [$-,io_lib:write(F)] end, Fs)
+ ].
+
+% format_bin_elements(#k_binary_cons{hd=H,tl=T,size=S,info=I}, Ctxt) ->
+% A = canno(T),
+% Fe = fun (Eh, Es, Ei, Ct) ->
+% [format(Eh, Ct),":",format(Es, Ct),"/",io_lib:write(Ei)]
+% end,
+% case T of
+% #k_zero_binary{} when A == [] ->
+% Fe(H, S, I, Ctxt);
+% #k_binary_cons{} when A == [] ->
+% Txt = [Fe(H, S, I, Ctxt)|","],
+% Ctxt1 = ctxt_bump_indent(Ctxt, width(Txt, Ctxt)),
+% [Txt|format_bin_elements(T, Ctxt1)];
+% _ ->
+% Txt = [Fe(H, S, I, Ctxt)|"|"],
+% [Txt|format(T, ctxt_bump_indent(Ctxt, width(Txt, Ctxt)))]
+% end.
+
+indent(Ctxt) -> indent(Ctxt#ctxt.indent, Ctxt).
+
+indent(N, _Ctxt) when N =< 0 -> "";
+indent(N, Ctxt) ->
+ T = Ctxt#ctxt.tab_width,
+ string:chars($\t, N div T, string:chars($\s, N rem T)).
+
+nl_indent(Ctxt) -> [$\n|indent(Ctxt)].
+
+
+unindent(T, Ctxt) ->
+ unindent(T, Ctxt#ctxt.indent, Ctxt, []).
+
+unindent(T, N, _Ctxt, C) when N =< 0 ->
+ [T|C];
+unindent([$\s|T], N, Ctxt, C) ->
+ unindent(T, N - 1, Ctxt, C);
+unindent([$\t|T], N, Ctxt, C) ->
+ Tab = Ctxt#ctxt.tab_width,
+ if N >= Tab ->
+ unindent(T, N - Tab, Ctxt, C);
+ true ->
+ unindent([string:chars($\s, Tab - N)|T], 0, Ctxt, C)
+ end;
+unindent([L|T], N, Ctxt, C) when list(L) ->
+ unindent(L, N, Ctxt, [T|C]);
+unindent([H|T], _N, _Ctxt, C) ->
+ [H|[T|C]];
+unindent([], N, Ctxt, [H|T]) ->
+ unindent(H, N, Ctxt, T);
+unindent([], _, _, []) -> [].
+
+
+width(Txt, Ctxt) ->
+ width(Txt, 0, Ctxt, []).
+
+width([$\t|T], A, Ctxt, C) ->
+ width(T, A + Ctxt#ctxt.tab_width, Ctxt, C);
+width([$\n|T], _A, Ctxt, C) ->
+ width(unindent([T|C], Ctxt), Ctxt);
+width([H|T], A, Ctxt, C) when list(H) ->
+ width(H, A, Ctxt, [T|C]);
+width([_|T], A, Ctxt, C) ->
+ width(T, A + 1, Ctxt, C);
+width([], A, Ctxt, [H|T]) ->
+ width(H, A, Ctxt, T);
+width([], A, _, []) -> A.
+
+ctxt_bump_indent(Ctxt, Dx) ->
+ Ctxt#ctxt{indent=Ctxt#ctxt.indent + Dx}.
+
+core_atom(A) -> io_lib:write_string(atom_to_list(A), $').
diff --git a/lib/dialyzer/test/options1_tests_SUITE_data/src/compiler/v3_life.erl b/lib/dialyzer/test/options1_tests_SUITE_data/src/compiler/v3_life.erl
new file mode 100644
index 0000000000..ff210d83f5
--- /dev/null
+++ b/lib/dialyzer/test/options1_tests_SUITE_data/src/compiler/v3_life.erl
@@ -0,0 +1,448 @@
+%% ``The contents of this file are subject to the Erlang Public License,
+%% Version 1.1, (the "License"); you may not use this file except in
+%% compliance with the License. You should have received a copy of the
+%% Erlang Public License along with this software. If not, it can be
+%% retrieved via the world wide web at http://www.erlang.org/.
+%%
+%% Software distributed under the License is distributed on an "AS IS"
+%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
+%% the License for the specific language governing rights and limitations
+%% under the License.
+%%
+%% The Initial Developer of the Original Code is Ericsson Utvecklings AB.
+%% Portions created by Ericsson are Copyright 1999, Ericsson Utvecklings
+%% AB. All Rights Reserved.''
+%%
+%% $Id: v3_life.erl,v 1.2 2010/03/04 13:54:20 maria Exp $
+%%
+%% Purpose : Convert annotated kernel expressions to annotated beam format.
+
+%% This module creates beam format annotated with variable lifetime
+%% information. Each thing is given an index and for each variable we
+%% store the first and last index for its occurrence. The variable
+%% database, VDB, attached to each thing is only relevant internally
+%% for that thing.
+%%
+%% For nested things like matches the numbering continues locally and
+%% the VDB for that thing refers to the variable usage within that
+%% thing. Variables which live through a such a thing are internally
+%% given a very large last index. Internally the indexes continue
+%% after the index of that thing. This creates no problems as the
+%% internal variable info never escapes and externally we only see
+%% variable which are alive both before or after.
+%%
+%% This means that variables never "escape" from a thing and the only
+%% way to get values from a thing is to "return" them, with 'break' or
+%% 'return'. Externally these values become the return values of the
+%% thing. This is no real limitation as most nested things have
+%% multiple threads so working out a common best variable usage is
+%% difficult.
+
+-module(v3_life).
+
+-export([module/2]).
+
+-export([vdb_find/2]).
+
+-import(lists, [map/2,foldl/3]).
+-import(ordsets, [add_element/2,intersection/2,union/2,union/1]).
+
+-include("v3_kernel.hrl").
+-include("v3_life.hrl").
+
+%% These are not defined in v3_kernel.hrl.
+get_kanno(Kthing) -> element(2, Kthing).
+%%set_kanno(Kthing, Anno) -> setelement(2, Kthing, Anno).
+
+module(#k_mdef{name=M,exports=Es,attributes=As,body=Fs0}, Opts) ->
+ put(?MODULE, Opts),
+ Fs1 = map(fun function/1, Fs0),
+ erase(?MODULE),
+ {ok,{M,Es,As,Fs1}}.
+
+%% function(Kfunc) -> Func.
+
+function(#k_fdef{func=F,arity=Ar,vars=Vs,body=Kb}) ->
+ %%ok = io:fwrite("life ~w: ~p~n", [?LINE,{F,Ar}]),
+ As = var_list(Vs),
+ Vdb0 = foldl(fun ({var,N}, Vdb) -> new_var(N, 0, Vdb) end, [], As),
+ %% Force a top-level match!
+ B0 = case Kb of
+ #k_match{} -> Kb;
+ _ ->
+ Ka = get_kanno(Kb),
+ #k_match{anno=#k{us=Ka#k.us,ns=[],a=Ka#k.a},
+ vars=Vs,body=Kb,ret=[]}
+ end,
+ {B1,_,Vdb1} = body(B0, 1, Vdb0),
+ {function,F,Ar,As,B1,Vdb1}.
+
+%% body(Kbody, I, Vdb) -> {[Expr],MaxI,Vdb}.
+%% Handle a body, need special cases for transforming match_fails.
+%% We KNOW that they only occur last in a body.
+
+body(#k_seq{arg=#k_put{anno=Pa,arg=Arg,ret=[R]},
+ body=#k_enter{anno=Ea,op=#k_internal{name=match_fail,arity=1},
+ args=[R]}},
+ I, Vdb0) ->
+ Vdb1 = use_vars(Pa#k.us, I, Vdb0), %All used here
+ {[match_fail(Arg, I, Pa#k.a ++ Ea#k.a)],I,Vdb1};
+body(#k_enter{anno=Ea,op=#k_internal{name=match_fail,arity=1},args=[Arg]},
+ I, Vdb0) ->
+ Vdb1 = use_vars(Ea#k.us, I, Vdb0),
+ {[match_fail(Arg, I, Ea#k.a)],I,Vdb1};
+body(#k_seq{arg=Ke,body=Kb}, I, Vdb0) ->
+ %%ok = io:fwrite("life ~w:~p~n", [?LINE,{Ke,I,Vdb0}]),
+ A = get_kanno(Ke),
+ Vdb1 = use_vars(A#k.us, I, new_vars(A#k.ns, I, Vdb0)),
+ {Es,MaxI,Vdb2} = body(Kb, I+1, Vdb1),
+ E = expr(Ke, I, Vdb2),
+ {[E|Es],MaxI,Vdb2};
+body(Ke, I, Vdb0) ->
+ %%ok = io:fwrite("life ~w:~p~n", [?LINE,{Ke,I,Vdb0}]),
+ A = get_kanno(Ke),
+ Vdb1 = use_vars(A#k.us, I, new_vars(A#k.ns, I, Vdb0)),
+ E = expr(Ke, I, Vdb1),
+ {[E],I,Vdb1}.
+
+%% guard(Kguard, I, Vdb) -> Guard.
+
+guard(#k_try{anno=A,arg=Ts,vars=[#k_var{name=X}],body=#k_var{name=X},
+ handler=#k_atom{val=false},ret=Rs}, I, Vdb) ->
+ %% Lock variables that are alive before try and used afterwards.
+ %% Don't lock variables that are only used inside the try expression.
+ Pdb0 = vdb_sub(I, I+1, Vdb),
+ {T,MaxI,Pdb1} = guard_body(Ts, I+1, Pdb0),
+ Pdb2 = use_vars(A#k.ns, MaxI+1, Pdb1), %Save "return" values
+ #l{ke={protected,T,var_list(Rs)},i=I,a=A#k.a,vdb=Pdb2};
+guard(#k_seq{}=G, I, Vdb0) ->
+ {Es,_,Vdb1} = guard_body(G, I, Vdb0),
+ #l{ke={block,Es},i=I,vdb=Vdb1,a=[]};
+guard(G, I, Vdb) -> guard_expr(G, I, Vdb).
+
+%% guard_body(Kbody, I, Vdb) -> {[Expr],MaxI,Vdb}.
+
+guard_body(#k_seq{arg=Ke,body=Kb}, I, Vdb0) ->
+ A = get_kanno(Ke),
+ Vdb1 = use_vars(A#k.us, I, new_vars(A#k.ns, I, Vdb0)),
+ {Es,MaxI,Vdb2} = guard_body(Kb, I+1, Vdb1),
+ E = guard_expr(Ke, I, Vdb2),
+ {[E|Es],MaxI,Vdb2};
+guard_body(Ke, I, Vdb0) ->
+ A = get_kanno(Ke),
+ Vdb1 = use_vars(A#k.us, I, new_vars(A#k.ns, I, Vdb0)),
+ E = guard_expr(Ke, I, Vdb1),
+ {[E],I,Vdb1}.
+
+%% guard_expr(Call, I, Vdb) -> Expr
+
+guard_expr(#k_test{anno=A,op=Op,args=As}, I, _Vdb) ->
+ #l{ke={test,test_op(Op),atomic_list(As)},i=I,a=A#k.a};
+guard_expr(#k_bif{anno=A,op=Op,args=As,ret=Rs}, I, _Vdb) ->
+ #l{ke={bif,bif_op(Op),atomic_list(As),var_list(Rs)},i=I,a=A#k.a};
+guard_expr(#k_put{anno=A,arg=Arg,ret=Rs}, I, _Vdb) ->
+ #l{ke={set,var_list(Rs),literal(Arg)},i=I,a=A#k.a};
+guard_expr(#k_match{anno=A,body=Kb,ret=Rs}, I, Vdb) ->
+ %% Experimental support for andalso/orelse in guards.
+ %% Work out imported variables which need to be locked.
+ Mdb = vdb_sub(I, I+1, Vdb),
+ M = match(Kb, A#k.us, I+1, Mdb),
+ #l{ke={match,M,var_list(Rs)},i=I,vdb=use_vars(A#k.us, I+1, Mdb),a=A#k.a};
+guard_expr(G, I, Vdb) -> guard(G, I, Vdb).
+
+%% expr(Kexpr, I, Vdb) -> Expr.
+
+expr(#k_call{anno=A,op=Op,args=As,ret=Rs}, I, _Vdb) ->
+ #l{ke={call,call_op(Op),atomic_list(As),var_list(Rs)},i=I,a=A#k.a};
+expr(#k_enter{anno=A,op=Op,args=As}, I, _Vdb) ->
+ #l{ke={enter,call_op(Op),atomic_list(As)},i=I,a=A#k.a};
+expr(#k_bif{anno=A,op=Op,args=As,ret=Rs}, I, _Vdb) ->
+ Bif = k_bif(A, Op, As, Rs),
+ #l{ke=Bif,i=I,a=A#k.a};
+expr(#k_match{anno=A,body=Kb,ret=Rs}, I, Vdb) ->
+ %% Work out imported variables which need to be locked.
+ Mdb = vdb_sub(I, I+1, Vdb),
+ M = match(Kb, A#k.us, I+1, Mdb),
+ #l{ke={match,M,var_list(Rs)},i=I,vdb=use_vars(A#k.us, I+1, Mdb),a=A#k.a};
+expr(#k_try{anno=A,arg=Ka,vars=Vs,body=Kb,evars=Evs,handler=Kh,ret=Rs}, I, Vdb) ->
+ %% Lock variables that are alive before the catch and used afterwards.
+ %% Don't lock variables that are only used inside the try.
+ Tdb0 = vdb_sub(I, I+1, Vdb),
+ %% This is the tricky bit. Lock variables in Arg that are used in
+ %% the body and handler. Add try tag 'variable'.
+ Ab = get_kanno(Kb),
+ Ah = get_kanno(Kh),
+ Tdb1 = use_vars(Ab#k.us, I+3, use_vars(Ah#k.us, I+3, Tdb0)),
+ Tdb2 = vdb_sub(I, I+2, Tdb1),
+ Vnames = fun (Kvar) -> Kvar#k_var.name end, %Get the variable names
+ {Aes,_,Adb} = body(Ka, I+2, add_var({catch_tag,I+1}, I+1, 1000000, Tdb2)),
+ {Bes,_,Bdb} = body(Kb, I+4, new_vars(map(Vnames, Vs), I+3, Tdb2)),
+ {Hes,_,Hdb} = body(Kh, I+4, new_vars(map(Vnames, Evs), I+3, Tdb2)),
+ #l{ke={'try',#l{ke={block,Aes},i=I+1,vdb=Adb,a=[]},
+ var_list(Vs),#l{ke={block,Bes},i=I+3,vdb=Bdb,a=[]},
+ var_list(Evs),#l{ke={block,Hes},i=I+3,vdb=Hdb,a=[]},
+ var_list(Rs)},
+ i=I,vdb=Tdb1,a=A#k.a};
+expr(#k_catch{anno=A,body=Kb,ret=[R]}, I, Vdb) ->
+ %% Lock variables that are alive before the catch and used afterwards.
+ %% Don't lock variables that are only used inside the catch.
+ %% Add catch tag 'variable'.
+ Cdb0 = vdb_sub(I, I+1, Vdb),
+ {Es,_,Cdb1} = body(Kb, I+1, add_var({catch_tag,I}, I, 1000000, Cdb0)),
+ #l{ke={'catch',Es,variable(R)},i=I,vdb=Cdb1,a=A#k.a};
+expr(#k_receive{anno=A,var=V,body=Kb,timeout=T,action=Ka,ret=Rs}, I, Vdb) ->
+ %% Work out imported variables which need to be locked.
+ Rdb = vdb_sub(I, I+1, Vdb),
+ M = match(Kb, add_element(V#k_var.name, A#k.us), I+1,
+ new_var(V#k_var.name, I, Rdb)),
+ {Tes,_,Adb} = body(Ka, I+1, Rdb),
+ #l{ke={receive_loop,atomic_lit(T),variable(V),M,
+ #l{ke=Tes,i=I+1,vdb=Adb,a=[]},var_list(Rs)},
+ i=I,vdb=use_vars(A#k.us, I+1, Vdb),a=A#k.a};
+expr(#k_receive_accept{anno=A}, I, _Vdb) ->
+ #l{ke=receive_accept,i=I,a=A#k.a};
+expr(#k_receive_next{anno=A}, I, _Vdb) ->
+ #l{ke=receive_next,i=I,a=A#k.a};
+expr(#k_put{anno=A,arg=Arg,ret=Rs}, I, _Vdb) ->
+ #l{ke={set,var_list(Rs),literal(Arg)},i=I,a=A#k.a};
+expr(#k_break{anno=A,args=As}, I, _Vdb) ->
+ #l{ke={break,atomic_list(As)},i=I,a=A#k.a};
+expr(#k_return{anno=A,args=As}, I, _Vdb) ->
+ #l{ke={return,atomic_list(As)},i=I,a=A#k.a}.
+
+%% call_op(Op) -> Op.
+%% bif_op(Op) -> Op.
+%% test_op(Op) -> Op.
+%% Do any necessary name translations here to munge into beam format.
+
+call_op(#k_local{name=N}) -> N;
+call_op(#k_remote{mod=M,name=N}) -> {remote,atomic_lit(M),atomic_lit(N)};
+call_op(Other) -> variable(Other).
+
+bif_op(#k_remote{mod=#k_atom{val=erlang},name=#k_atom{val=N}}) -> N;
+bif_op(#k_internal{name=N}) -> N.
+
+test_op(#k_remote{mod=#k_atom{val=erlang},name=#k_atom{val=N}}) -> N.
+
+%% k_bif(Anno, Op, [Arg], [Ret]) -> Expr.
+%% Build bifs, do special handling of internal some calls.
+
+k_bif(_A, #k_internal{name=dsetelement,arity=3}, As, []) ->
+ {bif,dsetelement,atomic_list(As),[]};
+k_bif(_A, #k_internal{name=make_fun},
+ [#k_atom{val=Fun},#k_int{val=Arity},
+ #k_int{val=Index},#k_int{val=Uniq}|Free],
+ Rs) ->
+ {bif,{make_fun,Fun,Arity,Index,Uniq},var_list(Free),var_list(Rs)};
+k_bif(_A, Op, As, Rs) ->
+ %% The general case.
+ {bif,bif_op(Op),atomic_list(As),var_list(Rs)}.
+
+%% match(Kexpr, [LockVar], I, Vdb) -> Expr.
+%% Convert match tree to old format.
+
+match(#k_alt{anno=A,first=Kf,then=Kt}, Ls, I, Vdb0) ->
+ Vdb1 = use_vars(union(A#k.us, Ls), I, Vdb0),
+ F = match(Kf, Ls, I+1, Vdb1),
+ T = match(Kt, Ls, I+1, Vdb1),
+ #l{ke={alt,F,T},i=I,vdb=Vdb1,a=A#k.a};
+match(#k_select{anno=A,var=V,types=Kts}, Ls0, I, Vdb0) ->
+ Ls1 = add_element(V#k_var.name, Ls0),
+ Vdb1 = use_vars(union(A#k.us, Ls1), I, Vdb0),
+ Ts = map(fun (Tc) -> type_clause(Tc, Ls1, I+1, Vdb1) end, Kts),
+ #l{ke={select,literal(V),Ts},i=I,vdb=Vdb1,a=A#k.a};
+match(#k_guard{anno=A,clauses=Kcs}, Ls, I, Vdb0) ->
+ Vdb1 = use_vars(union(A#k.us, Ls), I, Vdb0),
+ Cs = map(fun (G) -> guard_clause(G, Ls, I+1, Vdb1) end, Kcs),
+ #l{ke={guard,Cs},i=I,vdb=Vdb1,a=A#k.a};
+match(Other, Ls, I, Vdb0) ->
+ Vdb1 = use_vars(Ls, I, Vdb0),
+ {B,_,Vdb2} = body(Other, I+1, Vdb1),
+ #l{ke={block,B},i=I,vdb=Vdb2,a=[]}.
+
+type_clause(#k_type_clause{anno=A,type=T,values=Kvs}, Ls, I, Vdb0) ->
+ %%ok = io:format("life ~w: ~p~n", [?LINE,{T,Kvs}]),
+ Vdb1 = use_vars(union(A#k.us, Ls), I+1, Vdb0),
+ Vs = map(fun (Vc) -> val_clause(Vc, Ls, I+1, Vdb1) end, Kvs),
+ #l{ke={type_clause,type(T),Vs},i=I,vdb=Vdb1,a=A#k.a}.
+
+val_clause(#k_val_clause{anno=A,val=V,body=Kb}, Ls0, I, Vdb0) ->
+ {_Used,New} = match_pat_vars(V),
+ %% Not clear yet how Used should be used.
+ Bus = (get_kanno(Kb))#k.us,
+ %%ok = io:format("Ls0 = ~p, Used=~p\n New=~p, Bus=~p\n", [Ls0,Used,New,Bus]),
+ Ls1 = union(intersection(New, Bus), Ls0), %Lock for safety
+ Vdb1 = use_vars(union(A#k.us, Ls1), I+1, new_vars(New, I, Vdb0)),
+ B = match(Kb, Ls1, I+1, Vdb1),
+ #l{ke={val_clause,literal(V),B},i=I,vdb=use_vars(Bus, I+1, Vdb1),a=A#k.a}.
+
+guard_clause(#k_guard_clause{anno=A,guard=Kg,body=Kb}, Ls, I, Vdb0) ->
+ Vdb1 = use_vars(union(A#k.us, Ls), I+2, Vdb0),
+ Gdb = vdb_sub(I+1, I+2, Vdb1),
+ G = guard(Kg, I+1, Gdb),
+ B = match(Kb, Ls, I+2, Vdb1),
+ #l{ke={guard_clause,G,B},
+ i=I,vdb=use_vars((get_kanno(Kg))#k.us, I+2, Vdb1),
+ a=A#k.a}.
+
+%% match_fail(FailValue, I, Anno) -> Expr.
+%% Generate the correct match_fail instruction. N.B. there is no
+%% generic case for when the fail value has been created elsewhere.
+
+match_fail(#k_tuple{es=[#k_atom{val=function_clause}|As]}, I, A) ->
+ #l{ke={match_fail,{function_clause,literal_list(As)}},i=I,a=A};
+match_fail(#k_tuple{es=[#k_atom{val=badmatch},Val]}, I, A) ->
+ #l{ke={match_fail,{badmatch,literal(Val)}},i=I,a=A};
+match_fail(#k_tuple{es=[#k_atom{val=case_clause},Val]}, I, A) ->
+ #l{ke={match_fail,{case_clause,literal(Val)}},i=I,a=A};
+match_fail(#k_atom{val=if_clause}, I, A) ->
+ #l{ke={match_fail,if_clause},i=I,a=A};
+match_fail(#k_tuple{es=[#k_atom{val=try_clause},Val]}, I, A) ->
+ #l{ke={match_fail,{try_clause,literal(Val)}},i=I,a=A}.
+
+%% type(Ktype) -> Type.
+
+type(k_int) -> integer;
+type(k_char) -> integer; %Hhhmmm???
+type(k_float) -> float;
+type(k_atom) -> atom;
+type(k_nil) -> nil;
+type(k_cons) -> cons;
+type(k_tuple) -> tuple;
+type(k_binary) -> binary;
+type(k_bin_seg) -> bin_seg;
+type(k_bin_end) -> bin_end.
+
+%% variable(Klit) -> Lit.
+%% var_list([Klit]) -> [Lit].
+
+variable(#k_var{name=N}) -> {var,N}.
+
+var_list(Ks) -> map(fun variable/1, Ks).
+
+%% atomic_lit(Klit) -> Lit.
+%% atomic_list([Klit]) -> [Lit].
+
+atomic_lit(#k_var{name=N}) -> {var,N};
+atomic_lit(#k_int{val=I}) -> {integer,I};
+atomic_lit(#k_float{val=F}) -> {float,F};
+atomic_lit(#k_atom{val=N}) -> {atom,N};
+%%atomic_lit(#k_char{val=C}) -> {char,C};
+%%atomic_lit(#k_string{val=S}) -> {string,S};
+atomic_lit(#k_nil{}) -> nil.
+
+atomic_list(Ks) -> map(fun atomic_lit/1, Ks).
+
+%% literal(Klit) -> Lit.
+%% literal_list([Klit]) -> [Lit].
+
+literal(#k_var{name=N}) -> {var,N};
+literal(#k_int{val=I}) -> {integer,I};
+literal(#k_float{val=F}) -> {float,F};
+literal(#k_atom{val=N}) -> {atom,N};
+%%literal(#k_char{val=C}) -> {char,C};
+literal(#k_string{val=S}) -> {string,S};
+literal(#k_nil{}) -> nil;
+literal(#k_cons{hd=H,tl=T}) ->
+ {cons,[literal(H),literal(T)]};
+literal(#k_binary{segs=V}) ->
+ case proplists:get_bool(no_new_binaries, get(?MODULE)) of
+ true ->
+ {old_binary,literal(V)};
+ false ->
+ {binary,literal(V)}
+ end;
+literal(#k_bin_seg{size=S,unit=U,type=T,flags=Fs,seg=Seg,next=N}) ->
+ {bin_seg,literal(S),U,T,Fs,[literal(Seg),literal(N)]};
+literal(#k_bin_end{}) -> bin_end;
+literal(#k_tuple{es=Es}) ->
+ {tuple,literal_list(Es)}.
+
+literal_list(Ks) -> map(fun literal/1, Ks).
+
+%% match_pat_vars(Pattern) -> {[UsedVarName],[NewVarName]}.
+
+match_pat_vars(#k_var{name=N}) -> {[],[N]};
+match_pat_vars(#k_int{}) -> {[],[]};
+match_pat_vars(#k_float{}) -> {[],[]};
+match_pat_vars(#k_atom{}) -> {[],[]};
+%%match_pat_vars(#k_char{}) -> {[],[]};
+match_pat_vars(#k_string{}) -> {[],[]};
+match_pat_vars(#k_nil{}) -> {[],[]};
+match_pat_vars(#k_cons{hd=H,tl=T}) ->
+ match_pat_list_vars([H,T]);
+match_pat_vars(#k_binary{segs=V}) ->
+ match_pat_vars(V);
+match_pat_vars(#k_bin_seg{size=S,seg=Seg,next=N}) ->
+ {U1,New1} = match_pat_vars(Seg),
+ {U2,New2} = match_pat_vars(N),
+ {[],U3} = match_pat_vars(S),
+ {union([U1,U2,U3]),union(New1, New2)};
+match_pat_vars(#k_bin_end{}) -> {[],[]};
+match_pat_vars(#k_tuple{es=Es}) ->
+ match_pat_list_vars(Es).
+
+match_pat_list_vars(Ps) ->
+ foldl(fun (P, {Used0,New0}) ->
+ {Used,New} = match_pat_vars(P),
+ {union(Used0, Used),union(New0, New)} end,
+ {[],[]}, Ps).
+
+%% new_var(VarName, I, Vdb) -> Vdb.
+%% new_vars([VarName], I, Vdb) -> Vdb.
+%% use_var(VarName, I, Vdb) -> Vdb.
+%% use_vars([VarName], I, Vdb) -> Vdb.
+%% add_var(VarName, F, L, Vdb) -> Vdb.
+
+new_var(V, I, Vdb) ->
+ case vdb_find(V, Vdb) of
+ {V,F,L} when I < F -> vdb_store(V, I, L, Vdb);
+ {V,_,_} -> Vdb;
+ error -> vdb_store(V, I, I, Vdb)
+ end.
+
+new_vars(Vs, I, Vdb0) ->
+ foldl(fun (V, Vdb) -> new_var(V, I, Vdb) end, Vdb0, Vs).
+
+use_var(V, I, Vdb) ->
+ case vdb_find(V, Vdb) of
+ {V,F,L} when I > L -> vdb_store(V, F, I, Vdb);
+ {V,_,_} -> Vdb;
+ error -> vdb_store(V, I, I, Vdb)
+ end.
+
+use_vars(Vs, I, Vdb0) ->
+ foldl(fun (V, Vdb) -> use_var(V, I, Vdb) end, Vdb0, Vs).
+
+add_var(V, F, L, Vdb) ->
+ use_var(V, L, new_var(V, F, Vdb)).
+
+vdb_find(V, Vdb) ->
+ %% Peformance note: Profiling shows that this function accounts for
+ %% a lot of the execution time when huge constants terms are built.
+ %% Using the BIF lists:keysearch/3 is a lot faster than the
+ %% original Erlang version.
+ case lists:keysearch(V, 1, Vdb) of
+ {value,Vd} -> Vd;
+ false -> error
+ end.
+
+%vdb_find(V, [{V1,F,L}=Vd|Vdb]) when V < V1 -> error;
+%vdb_find(V, [{V1,F,L}=Vd|Vdb]) when V == V1 -> Vd;
+%vdb_find(V, [{V1,F,L}=Vd|Vdb]) when V > V1 -> vdb_find(V, Vdb);
+%vdb_find(V, []) -> error.
+
+vdb_store(V, F, L, [{V1,_,_}=Vd|Vdb]) when V > V1 ->
+ [Vd|vdb_store(V, F, L, Vdb)];
+vdb_store(V, F, L, [{V1,_,_}=Vd|Vdb]) when V < V1 -> [{V,F,L},Vd|Vdb];
+vdb_store(V, F, L, [{_V1,_,_}|Vdb]) -> [{V,F,L}|Vdb]; %V == V1
+vdb_store(V, F, L, []) -> [{V,F,L}].
+
+%% vdb_sub(Min, Max, Vdb) -> Vdb.
+%% Extract variables which are used before and after Min. Lock
+%% variables alive after Max.
+
+vdb_sub(Min, Max, Vdb) ->
+ [ if L >= Max -> {V,F,1000000};
+ true -> Vd
+ end || {V,F,L}=Vd <- Vdb, F < Min, L >= Min ].
diff --git a/lib/dialyzer/test/options1_tests_SUITE_data/src/compiler/v3_life.hrl b/lib/dialyzer/test/options1_tests_SUITE_data/src/compiler/v3_life.hrl
new file mode 100644
index 0000000000..95adcfcfd8
--- /dev/null
+++ b/lib/dialyzer/test/options1_tests_SUITE_data/src/compiler/v3_life.hrl
@@ -0,0 +1,25 @@
+%% ``The contents of this file are subject to the Erlang Public License,
+%% Version 1.1, (the "License"); you may not use this file except in
+%% compliance with the License. You should have received a copy of the
+%% Erlang Public License along with this software. If not, it can be
+%% retrieved via the world wide web at http://www.erlang.org/.
+%%
+%% Software distributed under the License is distributed on an "AS IS"
+%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
+%% the License for the specific language governing rights and limitations
+%% under the License.
+%%
+%% The Initial Developer of the Original Code is Ericsson Utvecklings AB.
+%% Portions created by Ericsson are Copyright 1999, Ericsson Utvecklings
+%% AB. All Rights Reserved.''
+%%
+%% $Id: v3_life.hrl,v 1.1 2008/12/17 09:53:43 mikpe Exp $
+%%
+%% This record contains variable life-time annotation for a
+%% kernel expression. Added by v3_life, used by v3_codegen.
+
+-record(l, {ke, %Kernel expression
+ i=0, %Op number
+ vdb=[], %Variable database
+ a}). %Core annotation
+