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-rw-r--r--lib/compiler/src/sys_pre_expand.erl42
-rw-r--r--lib/compiler/src/v3_core.erl51
2 files changed, 81 insertions, 12 deletions
diff --git a/lib/compiler/src/sys_pre_expand.erl b/lib/compiler/src/sys_pre_expand.erl
index 761ae8409c..6410b73941 100644
--- a/lib/compiler/src/sys_pre_expand.erl
+++ b/lib/compiler/src/sys_pre_expand.erl
@@ -1,7 +1,7 @@
%%
%% %CopyrightBegin%
%%
-%% Copyright Ericsson AB 1996-2012. All Rights Reserved.
+%% Copyright Ericsson AB 1996-2014. All Rights Reserved.
%%
%% 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
@@ -33,12 +33,15 @@
-include("../include/erl_bits.hrl").
+-type fa() :: {atom(), arity()}.
+
-record(expand, {module=[], %Module name
exports=[], %Exports
imports=[], %Imports
compile=[], %Compile flags
attributes=[], %Attributes
callbacks=[], %Callbacks
+ optional_callbacks=[] :: [fa()], %Optional callbacks
defined, %Defined functions (gb_set)
vcount=0, %Variable counter
func=[], %Current function
@@ -99,7 +102,21 @@ define_functions(Forms, #expand{defined=Predef}=St) ->
module_attrs(#expand{attributes=Attributes}=St) ->
Attrs = [{attribute,Line,Name,Val} || {Name,Line,Val} <- Attributes],
Callbacks = [Callback || {_,_,callback,_}=Callback <- Attrs],
- {Attrs,St#expand{callbacks=Callbacks}}.
+ OptionalCallbacks = get_optional_callbacks(Attrs),
+ {Attrs,St#expand{callbacks=Callbacks,
+ optional_callbacks=OptionalCallbacks}}.
+
+get_optional_callbacks(Attrs) ->
+ L = [O ||
+ {attribute, _, optional_callbacks, O} <- Attrs,
+ is_fa_list(O)],
+ lists:append(L).
+
+is_fa_list([{FuncName, Arity}|L])
+ when is_atom(FuncName), is_integer(Arity), Arity >= 0 ->
+ is_fa_list(L);
+is_fa_list([]) -> true;
+is_fa_list(_) -> false.
module_predef_funcs(St) ->
{Mpf1,St1}=module_predef_func_beh_info(St),
@@ -108,19 +125,24 @@ module_predef_funcs(St) ->
module_predef_func_beh_info(#expand{callbacks=[]}=St) ->
{[], St};
-module_predef_func_beh_info(#expand{callbacks=Callbacks,defined=Defined,
+module_predef_func_beh_info(#expand{callbacks=Callbacks,
+ optional_callbacks=OptionalCallbacks,
+ defined=Defined,
exports=Exports}=St) ->
PreDef=[{behaviour_info,1}],
PreExp=PreDef,
- {[gen_beh_info(Callbacks)],
+ {[gen_beh_info(Callbacks, OptionalCallbacks)],
St#expand{defined=gb_sets:union(gb_sets:from_list(PreDef), Defined),
exports=union(from_list(PreExp), Exports)}}.
-gen_beh_info(Callbacks) ->
+gen_beh_info(Callbacks, OptionalCallbacks) ->
List = make_list(Callbacks),
+ OptionalList = make_optional_list(OptionalCallbacks),
{function,0,behaviour_info,1,
[{clause,0,[{atom,0,callbacks}],[],
- [List]}]}.
+ [List]},
+ {clause,0,[{atom,0,optional_callbacks}],[],
+ [OptionalList]}]}.
make_list([]) -> {nil,0};
make_list([{_,_,_,[{{Name,Arity},_}]}|Rest]) ->
@@ -130,6 +152,14 @@ make_list([{_,_,_,[{{Name,Arity},_}]}|Rest]) ->
{integer,0,Arity}]},
make_list(Rest)}.
+make_optional_list([]) -> {nil,0};
+make_optional_list([{Name,Arity}|Rest]) ->
+ {cons,0,
+ {tuple,0,
+ [{atom,0,Name},
+ {integer,0,Arity}]},
+ make_optional_list(Rest)}.
+
module_predef_funcs_mod_info(St) ->
PreDef = [{module_info,0},{module_info,1}],
PreExp = PreDef,
diff --git a/lib/compiler/src/v3_core.erl b/lib/compiler/src/v3_core.erl
index 8c18f6a9f7..83cf76f241 100644
--- a/lib/compiler/src/v3_core.erl
+++ b/lib/compiler/src/v3_core.erl
@@ -1,7 +1,7 @@
%%
%% %CopyrightBegin%
%%
-%% Copyright Ericsson AB 1999-2013. All Rights Reserved.
+%% Copyright Ericsson AB 1999-2014. All Rights Reserved.
%%
%% 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
@@ -82,6 +82,8 @@
-include("core_parse.hrl").
+-define(REC_OFFSET, 100000000). % Also in erl_expand_records.
+
%% Internal core expressions and help functions.
%% N.B. annotations fields in place as normal Core expressions.
@@ -501,7 +503,7 @@ expr({cons,L,H0,T0}, St0) ->
{H1,Hps,St1} = safe(H0, St0),
{T1,Tps,St2} = safe(T0, St1),
A = lineno_anno(L, St2),
- {ann_c_cons(A, H1, T1),Hps ++ Tps,St2};
+ {annotate_cons(A, H1, T1, St2),Hps ++ Tps,St2};
expr({lc,L,E,Qs0}, St0) ->
{Qs1,St1} = preprocess_quals(L, Qs0, St0),
lc_tq(L, E, Qs1, #c_literal{anno=lineno_anno(L, St1),val=[]}, St1);
@@ -509,8 +511,8 @@ expr({bc,L,E,Qs}, St) ->
bc_tq(L, E, Qs, {nil,L}, St);
expr({tuple,L,Es0}, St0) ->
{Es1,Eps,St1} = safe_list(Es0, St0),
- A = lineno_anno(L, St1),
- {ann_c_tuple(A, Es1),Eps,St1};
+ A = record_anno(L, St1),
+ {annotate_tuple(A, Es1, St1),Eps,St1};
expr({map,L,Es0}, St0) ->
% erl_lint should make sure only #{ K => V } are allowed
% in map construction.
@@ -1557,9 +1559,9 @@ pattern({atom,L,A}, St) -> #c_literal{anno=lineno_anno(L, St),val=A};
pattern({string,L,S}, St) -> #c_literal{anno=lineno_anno(L, St),val=S};
pattern({nil,L}, St) -> #c_literal{anno=lineno_anno(L, St),val=[]};
pattern({cons,L,H,T}, St) ->
- ann_c_cons(lineno_anno(L, St), pattern(H, St), pattern(T, St));
+ annotate_cons(lineno_anno(L, St), pattern(H, St), pattern(T, St), St);
pattern({tuple,L,Ps}, St) ->
- ann_c_tuple(lineno_anno(L, St), pattern_list(Ps, St));
+ annotate_tuple(record_anno(L, St), pattern_list(Ps, St), St);
pattern({map,L,Ps}, St) ->
#c_map{anno=lineno_anno(L, St), es=pattern_map_pairs(Ps, St)};
pattern({bin,L,Ps}, St) ->
@@ -1721,6 +1723,26 @@ fail_clause(Pats, Anno, Arg) ->
body=[#iprimop{anno=#a{anno=Anno},name=#c_literal{val=match_fail},
args=[Arg]}]}.
+annotate_tuple(A, Es, St) ->
+ case member(dialyzer, St#core.opts) of
+ true ->
+ %% Do not coalesce constant tuple elements. A Hack.
+ Node = cerl:ann_c_tuple(A, [cerl:c_var(any)]),
+ cerl:update_c_tuple_skel(Node, Es);
+ false ->
+ ann_c_tuple(A, Es)
+ end.
+
+annotate_cons(A, H, T, St) ->
+ case member(dialyzer, St#core.opts) of
+ true ->
+ %% Do not coalesce constant conses. A Hack.
+ Node= cerl:ann_c_cons(A, cerl:c_var(any), cerl:c_var(any)),
+ cerl:update_c_cons_skel(Node, H, T);
+ false ->
+ ann_c_cons(A, H, T)
+ end.
+
ubody(B, St) -> uexpr(B, [], St).
%% uclauses([Lclause], [KnownVar], State) -> {[Lclause],State}.
@@ -2238,6 +2260,23 @@ bitstr_vars(Segs, Vs) ->
lit_vars(V, lit_vars(S, Vs0))
end, Vs, Segs).
+record_anno(L, St) when L >= ?REC_OFFSET ->
+ case member(dialyzer, St#core.opts) of
+ true ->
+ [record | lineno_anno(L - ?REC_OFFSET, St)];
+ false ->
+ lineno_anno(L, St)
+ end;
+record_anno(L, St) when L < -?REC_OFFSET ->
+ case member(dialyzer, St#core.opts) of
+ true ->
+ [record | lineno_anno(L + ?REC_OFFSET, St)];
+ false ->
+ lineno_anno(L, St)
+ end;
+record_anno(L, St) ->
+ lineno_anno(L, St).
+
lineno_anno(L, St) ->
{line, Line} = erl_parse:get_attribute(L, line),
if
generated by cgit v1.2.3 (git 2.25.1) at 2025-06-26 03:40:54 +0000