%%
%% %CopyrightBegin%
%%
%% Copyright Ericsson AB 1996-2013. 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
%% 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 online 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.
%%
%% %CopyrightEnd%
%%
%% Purpose: Run the Erlang compiler.
-module(compile).
%% High-level interface.
-export([file/1,file/2,noenv_file/2,format_error/1,iofile/1]).
-export([forms/1,forms/2,noenv_forms/2]).
-export([output_generated/1,noenv_output_generated/1]).
-export([options/0]).
%% Erlc interface.
-export([compile/3,compile_beam/3,compile_asm/3,compile_core/3]).
-export_type([option/0]).
-include("erl_compile.hrl").
-include("core_parse.hrl").
-import(lists, [member/2,reverse/1,reverse/2,keyfind/3,last/1,
map/2,flatmap/2,foreach/2,foldr/3,any/2]).
%%----------------------------------------------------------------------
-type option() :: atom() | {atom(), term()} | {'d', atom(), term()}.
-type err_info() :: {erl_scan:line() | 'none',
module(), term()}. %% ErrorDescriptor
-type errors() :: [{file:filename(), [err_info()]}].
-type warnings() :: [{file:filename(), [err_info()]}].
-type mod_ret() :: {'ok', module()}
| {'ok', module(), cerl:c_module()} %% with option 'to_core'
| {'ok', module(), warnings()}.
-type bin_ret() :: {'ok', module(), binary()}
| {'ok', module(), binary(), warnings()}.
-type err_ret() :: 'error' | {'error', errors(), warnings()}.
-type comp_ret() :: mod_ret() | bin_ret() | err_ret().
%%----------------------------------------------------------------------
%%
%% Exported functions
%%
%% file(FileName)
%% file(FileName, Options)
%% Compile the module in file FileName.
-define(DEFAULT_OPTIONS, [verbose,report_errors,report_warnings]).
-spec file(module() | file:filename()) -> comp_ret().
file(File) -> file(File, ?DEFAULT_OPTIONS).
-spec file(module() | file:filename(), [option()] | option()) -> comp_ret().
file(File, Opts) when is_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 is_list(Opts) ->
do_compile({forms,Forms}, [binary|Opts++env_default_opts()]);
forms(Forms, Opt) when is_atom(Opt) ->
forms(Forms, [Opt|?DEFAULT_OPTIONS]).
%% 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).
-spec output_generated([option()]) -> boolean().
output_generated(Opts) ->
noenv_output_generated(Opts++env_default_opts()).
%%
%% Variants of the same function that don't consult ERL_COMPILER_OPTIONS
%% for default options.
%%
-spec noenv_file(module() | file:filename(), [option()] | option()) -> comp_ret().
noenv_file(File, Opts) when is_list(Opts) ->
do_compile({file,File}, Opts);
noenv_file(File, Opt) ->
noenv_file(File, [Opt|?DEFAULT_OPTIONS]).
noenv_forms(Forms, Opts) when is_list(Opts) ->
do_compile({forms,Forms}, [binary|Opts]);
noenv_forms(Forms, Opt) when is_atom(Opt) ->
noenv_forms(Forms, [Opt|?DEFAULT_OPTIONS]).
-spec noenv_output_generated([option()]) -> boolean().
noenv_output_generated(Opts) ->
{_,Passes} = passes(file, expand_opts(Opts)),
any(fun ({save_binary,_T,_F}) -> true;
(_Other) -> false
end, Passes).
%%
%% Local functions
%%
-define(pass(P), {P,fun P/1}).
-define(pass(P,T), {P,fun T/1,fun P/1}).
env_default_opts() ->
Key = "ERL_COMPILER_OPTIONS",
case os:getenv(Key) of
false -> [];
Str when is_list(Str) ->
case erl_scan:string(Str) of
{ok,Tokens,_} ->
case erl_parse:parse_term(Tokens ++ [{dot, 1}]) of
{ok,List} when is_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),
{Pid,Ref} =
spawn_monitor(fun() ->
exit(try
internal(Input, Opts)
catch
error:Reason ->
{error,Reason}
end)
end),
receive
{'DOWN',Ref,process,Pid,Rep} -> Rep
end.
expand_opts(Opts0) ->
%% {debug_info_key,Key} implies debug_info.
Opts = case {proplists:get_value(debug_info_key, Opts0),
proplists:get_value(encrypt_debug_info, Opts0),
proplists:get_bool(debug_info, Opts0)} of
{undefined,undefined,_} -> Opts0;
{_,_,false} -> [debug_info|Opts0];
{_,_,_} -> Opts0
end,
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(r12, Os) ->
[no_recv_opt,no_line_info|Os];
expand_opt(r13, Os) ->
[no_recv_opt,no_line_info|Os];
expand_opt(r14, Os) ->
[no_line_info|Os];
expand_opt({debug_info_key,_}=O, Os) ->
[encrypt_debug_info,O|Os];
expand_opt(no_float_opt, Os) ->
%%Turn off the entire type optimization pass.
[no_topt|Os];
expand_opt(O, Os) -> [O|Os].
%% format_error(ErrorDescriptor) -> string()
format_error(no_native_support) ->
"this system is not configured for native-code compilation.";
format_error(no_crypto) ->
"this system is not configured with crypto support.";
format_error(bad_crypto_key) ->
"invalid crypto key.";
format_error(no_crypto_key) ->
"no crypto key supplied.";
format_error({native, E}) ->
io_lib:fwrite("native-code compilation failed with reason: ~tP.",
[E, 25]);
format_error({native_crash,E,Stk}) ->
io_lib:fwrite("native-code compilation crashed with reason: ~tP.\n~tP\n",
[E,25,Stk,25]);
format_error({open,E}) ->
io_lib:format("open error '~ts'", [file:format_error(E)]);
format_error({epp,E}) ->
epp:format_error(E);
format_error(write_error) ->
"error writing file";
format_error({rename,From,To,Error}) ->
io_lib:format("failed to rename ~ts to ~ts: ~ts",
[From,To,file:format_error(Error)]);
format_error({delete,File,Error}) ->
io_lib:format("failed to delete file ~ts: ~ts",
[File,file:format_error(Error)]);
format_error({delete_temp,File,Error}) ->
io_lib:format("failed to delete temporary file ~ts: ~ts",
[File,file:format_error(Error)]);
format_error({parse_transform,M,R}) ->
io_lib:format("error in parse transform '~s': ~tp", [M, R]);
format_error({undef_parse_transform,M}) ->
io_lib:format("undefined parse transform '~s'", [M]);
format_error({core_transform,M,R}) ->
io_lib:format("error in core transform '~s': ~tp", [M, R]);
format_error({crash,Pass,Reason}) ->
io_lib:format("internal error in ~p;\ncrash reason: ~ts", [Pass,format_error_reason(Reason)]);
format_error({bad_return,Pass,Reason}) ->
io_lib:format("internal error in ~p;\nbad return value: ~ts", [Pass,format_error_reason(Reason)]);
format_error({module_name,Mod,Filename}) ->
io_lib:format("Module name '~s' does not match file name '~ts'", [Mod,Filename]).
format_error_reason({Reason, Stack}) when is_list(Stack) ->
StackFun = fun
(escript, run, 2) -> true;
(escript, start, 1) -> true;
(init, start_it, 1) -> true;
(init, start_em, 1) -> true;
(_Mod, _Fun, _Arity) -> false
end,
FormatFun = fun (Term, _) -> io_lib:format("~tp", [Term]) end,
[io_lib:format("~tp", [Reason]),"\n\n",
lib:format_stacktrace(1, erlang:get_stacktrace(), StackFun, FormatFun)];
format_error_reason(Reason) ->
io_lib:format("~tp", [Reason]).
%% The compile state record.
-record(compile, {filename="" :: file:filename(),
dir="" :: file:filename(),
base="" :: file:filename(),
ifile="" :: file:filename(),
ofile="" :: file:filename(),
module=[],
code=[],
core_code=[],
abstract_code=[], %Abstract code for debugger.
options=[] :: [option()], %Options for compilation
mod_options=[] :: [option()], %Options for module_info
encoding=none :: none | epp:source_encoding(),
errors=[],
warnings=[]}).
internal({forms,Forms}, Opts0) ->
{_,Ps} = passes(forms, Opts0),
Source = proplists:get_value(source, Opts0, ""),
Opts1 = proplists:delete(source, Opts0),
Compile = #compile{code=Forms,options=Opts1,mod_options=Opts1},
internal_comp(Ps, Source, "", Compile);
internal({file,File}, Opts) ->
{Ext,Ps} = passes(file, Opts),
Compile = #compile{options=Opts,mod_options=Opts},
internal_comp(Ps, File, Ext, Compile).
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 ~tp\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([{delay,Ps0}|Passes], Run, #compile{options=Opts}=St) ->
Ps = select_passes(Ps0, Opts) ++ Passes,
fold_comp(Ps, Run, St);
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 -> Error;
{'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}.
run_tc({Name,Fun}, St) ->
Before0 = statistics(runtime),
Val = (catch Fun(St)),
After0 = statistics(runtime),
{Before_c, _} = Before0,
{After_c, _} = After0,
Mem0 = erts_debug:flat_size(Val)*erlang:system_info(wordsize),
Mem = lists:flatten(io_lib:format("~.1f kB", [Mem0/1024])),
io:format(" ~-30s: ~10.2f s ~12s\n",
[Name,(After_c-Before_c) / 1000,Mem]),
Val.
comp_ret_ok(#compile{code=Code,warnings=Warn0,module=Mod,options=Opts}=St) ->
case werror(St) of
true ->
case member(report_warnings, Opts) of
true ->
io:format("~p: warnings being treated as errors\n",
[?MODULE]);
false ->
ok
end,
comp_ret_err(St);
false ->
Warn = messages_per_file(Warn0),
report_warnings(St#compile{warnings = Warn}),
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])
end.
comp_ret_err(#compile{warnings=Warn0,errors=Err0,options=Opts}=St) ->
Warn = messages_per_file(Warn0),
Err = messages_per_file(Err0),
report_errors(St#compile{errors=Err}),
report_warnings(St#compile{warnings=Warn}),
case member(return_errors, Opts) of
true -> {error,Err,Warn};
false -> error
end.
not_werror(St) -> not werror(St).
werror(#compile{options=Opts,warnings=Ws}) ->
Ws =/= [] andalso member(warnings_as_errors, Opts).
%% messages_per_file([{File,[Message]}]) -> [{File,[Message]}]
messages_per_file(Ms) ->
T = lists:sort([{File,M} || {File,Messages} <- Ms, M <- Messages]),
PrioMs = [erl_scan, epp, erl_parse],
{Prio0, Rest} =
lists:mapfoldl(fun(M, A) ->
lists:partition(fun({_,{_,Mod,_}}) -> Mod =:= M;
(_) -> false
end, A)
end, T, PrioMs),
Prio = lists:sort(fun({_,{L1,_,_}}, {_,{L2,_,_}}) -> L1 =< L2 end,
lists:append(Prio0)),
flatmap(fun mpf/1, [Prio, Rest]).
mpf(Ms) ->
[{File,[M || {F,M} <- Ms, F =:= File]} ||
File <- lists:usort([F || {F,_} <- Ms])].
%% passes(forms|file, [Option]) -> {Extension,[{Name,PassFun}]}
%% Figure out the extension of the input file and which passes
%% that need to be run.
passes(Type, Opts) ->
{Ext,Passes0} = passes_1(Opts),
Passes1 = case Type of
file -> Passes0;
forms -> tl(Passes0)
end,
Passes = select_passes(Passes1, Opts),
%% If the last pass saves the resulting binary to a file,
%% insert a first pass to remove the file (unless the
%% source file is a BEAM file).
{Ext,case last(Passes) of
{save_binary,_TestFun,_Fun} ->
case Passes of
[{read_beam_file,_}|_] ->
%% The BEAM is both input and output.
%% Don't remove it.
Passes;
_ ->
[?pass(remove_file)|Passes]
end;
_ ->
Passes
end}.
passes_1([Opt|Opts]) ->
case pass(Opt) of
{_,_}=Res -> Res;
none -> passes_1(Opts)
end;
passes_1([]) ->
{".erl",[?pass(parse_module)|standard_passes()]}.
pass(from_core) ->
{".core",[?pass(parse_core)|core_passes()]};
pass(from_asm) ->
{".S",[?pass(beam_consult_asm)|asm_passes()]};
pass(asm) ->
%% TODO: remove 'asm' in R18
io:format("compile:file/2 option 'asm' has been deprecated and will be "
"removed in R18.~n"
"Use 'from_asm' instead.~n"),
pass(from_asm);
pass(from_beam) ->
{".beam",[?pass(read_beam_file)|binary_passes()]};
pass(_) -> none.
%% 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 End compilation at this point.
%%
%% {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}};
{ok,Code,Ws} ->
{ok,St#compile{code=Code,warnings=St#compile.warnings++Ws}};
{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|_], _Opts) ->
[];
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([{delay,Passes0}|Ps], Opts) when is_list(Passes0) ->
%% Delay evaluation of compiler options and which compiler passes to run.
%% Since we must know beforehand whether a listing will be produced, we
%% will go through the list of passes and evaluate all conditions that
%% select a list pass.
case select_list_passes(Passes0, Opts) of
{done,Passes} ->
[{delay,Passes}];
{not_done,Passes} ->
[{delay,Passes}|select_passes(Ps, Opts)]
end;
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.
%% select_list_passes([Pass], Opts) -> {done,[Pass]} | {not_done,[Pass]}
%% Evaluate all conditions having to do with listings in the list of
%% passes.
select_list_passes(Ps, Opts) ->
select_list_passes_1(Ps, Opts, []).
select_list_passes_1([{iff,Flag,{listing,_}=Listing}|Ps], Opts, Acc) ->
case member(Flag, Opts) of
true -> {done,reverse(Acc, [Listing])};
false -> select_list_passes_1(Ps, Opts, Acc)
end;
select_list_passes_1([{iff,Flag,{done,Ext}}|Ps], Opts, Acc) ->
case member(Flag, Opts) of
false ->
select_list_passes_1(Ps, Opts, Acc);
true ->
{done,case member(binary, Opts) of
false -> reverse(Acc, [{listing,Ext}]);
true -> reverse(Acc)
end}
end;
select_list_passes_1([{iff=Op,Flag,List0}|Ps], Opts, Acc) when is_list(List0) ->
case select_list_passes(List0, Opts) of
{done,List} -> {done,reverse(Acc) ++ List};
{not_done,List} -> select_list_passes_1(Ps, Opts, [{Op,Flag,List}|Acc])
end;
select_list_passes_1([{unless=Op,Flag,List0}|Ps], Opts, Acc) when is_list(List0) ->
case select_list_passes(List0, Opts) of
{done,List} -> {done,reverse(Acc) ++ List};
{not_done,List} -> select_list_passes_1(Ps, Opts, [{Op,Flag,List}|Acc])
end;
select_list_passes_1([P|Ps], Opts, Acc) ->
select_list_passes_1(Ps, Opts, [P|Acc]);
select_list_passes_1([], _, Acc) ->
{not_done,reverse(Acc)}.
%% The standard passes (almost) always run.
standard_passes() ->
[?pass(transform_module),
{iff,makedep,[
?pass(makedep),
{unless,binary,?pass(makedep_output)}
]},
{iff,makedep,done},
{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.
[{iff,clint0,?pass(core_lint_module)},
{delay,
[{unless,no_copt,
[{core_old_inliner,fun test_old_inliner/1,fun core_old_inliner/1},
{iff,doldinline,{listing,"oldinline"}},
?pass(core_fold_module),
{iff,dcorefold,{listing,"corefold"}},
{core_inline_module,fun test_core_inliner/1,fun core_inline_module/1},
{iff,dinline,{listing,"inline"}},
{core_fold_after_inlining,fun test_core_inliner/1,fun core_fold_module_after_inlining/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,dsetel,{listing,"dsetel"}},
{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.
[{delay,
[{pass,beam_a},
{unless,no_postopt,
[{pass,beam_block},
{iff,dblk,{listing,"block"}},
{unless,no_except,{pass,beam_except}},
{iff,dexcept,{listing,"except"}},
{unless,no_bopt,{pass,beam_bool}},
{iff,dbool,{listing,"bool"}},
{unless,no_topt,{pass,beam_type}},
{iff,dtype,{listing,"type"}},
{pass,beam_split},
{iff,dsplit,{listing,"split"}},
{unless,no_dead,{pass,beam_dead}},
{iff,ddead,{listing,"dead"}},
{unless,no_jopt,{pass,beam_jump}},
{iff,djmp,{listing,"jump"}},
{unless,no_peep_opt,{pass,beam_peep}},
{iff,dpeep,{listing,"peep"}},
{pass,beam_clean},
{iff,dclean,{listing,"clean"}},
{unless,no_bsm_opt,{pass,beam_bsm}},
{iff,dbsm,{listing,"bsm"}},
{unless,no_recv_opt,{pass,beam_receive}},
{iff,drecv,{listing,"recv"}},
{unless,no_stack_trimming,{pass,beam_trim}},
{iff,dtrim,{listing,"trim"}},
{pass,beam_flatten}]},
%% If post optimizations are turned off, we still
%% need to do a few clean-ups to code.
{iff,no_postopt,[{pass,beam_clean}]},
{pass,beam_z},
{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,not_werror)}].
%%%
%%% 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} ->
Encoding = epp:read_encoding(St#compile.ifile),
{Module, Forms} = preprocess_asm_forms(Forms0),
{ok,St#compile{module=Module, code=Forms, encoding=Encoding}};
{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 no_native_compilation(Infile, St) 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.
no_native_compilation(BeamFile, #compile{options=Opts0}) ->
case beam_lib:chunks(BeamFile, ["CInf"]) of
{ok,{_,[{"CInf",Term0}]}} ->
Term = binary_to_term(Term0),
%% Compiler options in the beam file will override
%% options passed to the compiler.
Opts = proplists:get_value(options, Term, []) ++ Opts0,
member(no_new_funs, Opts) orelse not is_native_enabled(Opts);
_ -> false
end.
parse_module(St) ->
Opts = St#compile.options,
Cwd = ".",
IncludePath = [Cwd, St#compile.dir|inc_paths(Opts)],
R = epp:parse_file(St#compile.ifile, IncludePath, pre_defs(Opts)),
case R of
{ok,Forms} ->
Encoding = epp:read_encoding(St#compile.ifile),
{ok,St#compile{code=Forms,encoding=Encoding}};
{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_literal.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([]) -> [].
clean_parse_transforms(Fs) ->
clean_parse_transforms_1(Fs, []).
clean_parse_transforms_1([{attribute,L,compile,C0}|Fs], Acc) when is_list(C0) ->
C = lists:filter(fun({parse_transform,_}) -> false;
(_) -> true
end, C0),
clean_parse_transforms_1(Fs, [{attribute,L,compile,C}|Acc]);
clean_parse_transforms_1([{attribute,_,compile,{parse_transform,_}}|Fs], Acc) ->
clean_parse_transforms_1(Fs, Acc);
clean_parse_transforms_1([F|Fs], Acc) ->
clean_parse_transforms_1(Fs, [F|Acc]);
clean_parse_transforms_1([], Acc) -> reverse(Acc).
transforms(Os) -> [ M || {parse_transform,M} <- Os ].
transform_module(#compile{options=Opt,code=Code0}=St0) ->
%% Extract compile options from code into options field.
case transforms(Opt ++ compile_options(Code0)) of
[] -> {ok,St0}; %No parse transforms.
Ts ->
%% Remove parse_transform attributes from the abstract code to
%% prevent parse transforms to be run more than once.
Code = clean_parse_transforms(Code0),
St = St0#compile{code=Code},
foldl_transform(St, Ts)
end.
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',{undef,_}} ->
Es = [{St#compile.ifile,[{none,compile,
{undef_parse_transform,T}}]}],
{error,St#compile{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}};
{warning, Forms, Ws} ->
foldl_transform(
St#compile{code=Forms,
warnings=St#compile.warnings ++ Ws}, Ts);
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} | _]) -> 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.
makedep(#compile{code=Code,options=Opts}=St) ->
Ifile = St#compile.ifile,
Ofile = St#compile.ofile,
%% Get the target of the Makefile rule.
Target0 =
case proplists:get_value(makedep_target, Opts) of
undefined ->
%% The target is derived from the output filename: possibly
%% remove the current working directory to obtain a relative
%% path.
shorten_filename(Ofile);
T ->
%% The caller specified one.
T
end,
%% Quote the target is the called asked for this.
Target1 = case proplists:get_value(makedep_quote_target, Opts) of
true ->
%% For now, only "$" is replaced by "$$".
Fun = fun
($$) -> "$$";
(C) -> C
end,
map(Fun, Target0);
_ ->
Target0
end,
Target = Target1 ++ ":",
%% List the dependencies (includes) for this target.
{MainRule,PhonyRules} = makedep_add_headers(
Ifile, % The input file name.
Code, % The parsed source.
[], % The list of dependencies already added.
length(Target), % The current line length.
Target, % The target.
"", % Phony targets.
Opts),
%% Prepare the content of the Makefile. For instance:
%% hello.erl: hello.hrl common.hrl
%%
%% Or if phony targets are enabled:
%% hello.erl: hello.hrl common.hrl
%%
%% hello.hrl:
%%
%% common.hrl:
Makefile = case proplists:get_value(makedep_phony, Opts) of
true -> MainRule ++ PhonyRules;
_ -> MainRule
end,
{ok,St#compile{code=iolist_to_binary([Makefile,"\n"])}}.
makedep_add_headers(Ifile, [{attribute,_,file,{File,_}}|Rest],
Included, LineLen, MainTarget, Phony, Opts) ->
%% The header "File" exists, add it to the dependencies.
{Included1,LineLen1,MainTarget1,Phony1} =
makedep_add_header(Ifile, Included, LineLen, MainTarget, Phony, File),
makedep_add_headers(Ifile, Rest, Included1, LineLen1,
MainTarget1, Phony1, Opts);
makedep_add_headers(Ifile, [{error,{_,epp,{include,file,File}}}|Rest],
Included, LineLen, MainTarget, Phony, Opts) ->
%% The header "File" doesn't exist, do we add it to the dependencies?
case proplists:get_value(makedep_add_missing, Opts) of
true ->
{Included1,LineLen1,MainTarget1,Phony1} =
makedep_add_header(Ifile, Included, LineLen, MainTarget,
Phony, File),
makedep_add_headers(Ifile, Rest, Included1, LineLen1,
MainTarget1, Phony1, Opts);
_ ->
makedep_add_headers(Ifile, Rest, Included, LineLen,
MainTarget, Phony, Opts)
end;
makedep_add_headers(Ifile, [_|Rest], Included, LineLen,
MainTarget, Phony, Opts) ->
makedep_add_headers(Ifile, Rest, Included,
LineLen, MainTarget, Phony, Opts);
makedep_add_headers(_Ifile, [], _Included, _LineLen,
MainTarget, Phony, _Opts) ->
{MainTarget,Phony}.
makedep_add_header(Ifile, Included, LineLen, MainTarget, Phony, File) ->
case member(File, Included) of
true ->
%% This file was already listed in the dependencies, skip it.
{Included,LineLen,MainTarget,Phony};
false ->
Included1 = [File|Included],
%% Remove "./" in front of the dependency filename.
File1 = case File of
"./" ++ File0 -> File0;
_ -> File
end,
%% Prepare the phony target name.
Phony1 = case File of
Ifile -> Phony;
_ -> Phony ++ "\n\n" ++ File1 ++ ":"
end,
%% Add the file to the dependencies. Lines longer than 76 columns
%% are splitted.
if
LineLen + 1 + length(File1) > 76 ->
LineLen1 = 2 + length(File1),
MainTarget1 = MainTarget ++ " \\\n " ++ File1,
{Included1,LineLen1,MainTarget1,Phony1};
true ->
LineLen1 = LineLen + 1 + length(File1),
MainTarget1 = MainTarget ++ " " ++ File1,
{Included1,LineLen1,MainTarget1,Phony1}
end
end.
makedep_output(#compile{code=Code,options=Opts,ofile=Ofile}=St) ->
%% Write this Makefile (Code) to the selected output.
%% If no output is specified, the default is to write to a file named after
%% the output file.
Output0 = case proplists:get_value(makedep_output, Opts) of
undefined ->
%% Prepare the default filename.
outfile(filename:basename(Ofile, ".beam"), "Pbeam", Opts);
O ->
O
end,
%% If the caller specified an io_device(), there's nothing to do. If he
%% specified a filename, we must create it. Furthermore, this created file
%% must be closed before returning.
Ret = case Output0 of
_ when is_list(Output0) ->
case file:delete(Output0) of
Ret2 when Ret2 =:= ok; Ret2 =:= {error,enoent} ->
case file:open(Output0, [write]) of
{ok,IODev} ->
{ok,IODev,true};
{error,Reason2} ->
{error,open,Reason2}
end;
{error,Reason1} ->
{error,delete,Reason1}
end;
_ ->
{ok,Output0,false}
end,
case Ret of
{ok,Output1,CloseOutput} ->
try
%% Write the Makefile.
io:fwrite(Output1, "~ts", [Code]),
%% Close the file if relevant.
if
CloseOutput -> ok = file:close(Output1);
true -> ok
end,
{ok,St}
catch
exit:_ ->
%% Couldn't write to output Makefile.
Err = {St#compile.ifile,[{none,?MODULE,write_error}]},
{error,St#compile{errors=St#compile.errors++[Err]}}
end;
{error,open,Reason} ->
%% Couldn't open output Makefile.
Err = {St#compile.ifile,[{none,?MODULE,{open,Reason}}]},
{error,St#compile{errors=St#compile.errors++[Err]}};
{error,delete,Reason} ->
%% Couldn't open output Makefile.
Err = {St#compile.ifile,[{none,?MODULE,{delete,Output0,Reason}}]},
{error,St#compile{errors=St#compile.errors++[Err]}}
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),
Opts = expand_opts(Opts1),
{ok,St0#compile{module=Mod,options=Opts,code={Mod,Exp,Forms}}}.
core_module(#compile{code=Code0,options=Opts}=St) ->
{ok,Code,Ws} = v3_core:module(Code0, Opts),
{ok,St#compile{code=Code,warnings=St#compile.warnings ++ Ws}}.
core_fold_module(#compile{code=Code0,options=Opts,warnings=Warns}=St) ->
{ok,Code,Ws} = sys_core_fold:module(Code0, Opts),
{ok,St#compile{code=Code,warnings=Warns ++ Ws}}.
core_fold_module_after_inlining(#compile{code=Code0,options=Opts}=St) ->
%% Inlining may produce code that generates spurious warnings.
%% Ignore all warnings.
{ok,Code,_Ws} = sys_core_fold:module(Code0, Opts),
{ok,St#compile{code=Code}}.
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.
any(fun({inline,_}) -> true;
(_) -> false
end, Opts).
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) ->
{ok,Code} = sys_core_inline:module(Code0, Opts),
{ok,St#compile{code=Code}}.
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}=St) ->
{ok,Code,Ws} = v3_kernel:module(Code0, Opts),
{ok,St#compile{code=Code,warnings=St#compile.warnings ++ Ws}}.
save_abstract_code(#compile{ifile=File}=St) ->
case abstract_code(St) of
{ok,Code} ->
{ok,St#compile{abstract_code=Code}};
{error,Es} ->
{error,St#compile{errors=St#compile.errors ++ [{File,Es}]}}
end.
abstract_code(#compile{code=Code,options=Opts,ofile=OFile}) ->
Abstr = erlang:term_to_binary({raw_abstract_v1,Code}, [compressed]),
case member(encrypt_debug_info, Opts) of
true ->
case keyfind(debug_info_key, 1, Opts) of
{_,Key} ->
encrypt_abs_code(Abstr, Key);
false ->
%% Note: #compile.module has not been set yet.
%% Here is an approximation that should work for
%% all valid cases.
Module = list_to_atom(filename:rootname(filename:basename(OFile))),
Mode = proplists:get_value(crypto_mode, Opts, des3_cbc),
case beam_lib:get_crypto_key({debug_info, Mode, Module, OFile}) of
error ->
{error, [{none,?MODULE,no_crypto_key}]};
Key ->
encrypt_abs_code(Abstr, {Mode, Key})
end
end;
false ->
{ok, Abstr}
end.
encrypt_abs_code(Abstr, Key0) ->
try
RealKey = generate_key(Key0),
case start_crypto() of
ok -> {ok,encrypt(RealKey, Abstr)};
{error,_}=E -> E
end
catch
error:_ ->
{error,[{none,?MODULE,bad_crypto_key}]}
end.
start_crypto() ->
try crypto:start() of
{error,{already_started,crypto}} -> ok;
ok -> ok
catch
error:_ ->
{error,[{none,?MODULE,no_crypto}]}
end.
generate_key({Type,String}) when is_atom(Type), is_list(String) ->
beam_lib:make_crypto_key(Type, String);
generate_key(String) when is_list(String) ->
generate_key({des3_cbc,String}).
encrypt({des3_cbc=Type,Key,IVec,BlockSize}, Bin0) ->
Bin1 = case byte_size(Bin0) rem BlockSize of
0 -> Bin0;
N -> list_to_binary([Bin0,random_bytes(BlockSize-N)])
end,
Bin = crypto:block_encrypt(Type, Key, IVec, Bin1),
TypeString = atom_to_list(Type),
list_to_binary([0,length(TypeString),TypeString,Bin]).
random_bytes(N) ->
{A,B,C} = now(),
_ = random:seed(A, B, C),
random_bytes_1(N, []).
random_bytes_1(0, Acc) -> Acc;
random_bytes_1(N, Acc) -> random_bytes_1(N-1, [random:uniform(255)|Acc]).
save_core_code(St) ->
{ok,St#compile{core_code=cerl:from_records(St#compile.code)}}.
beam_asm(#compile{ifile=File,code=Code0,
abstract_code=Abst,mod_options=Opts0}=St) ->
Source = filename:absname(File),
Opts1 = lists:map(fun({debug_info_key,_}) -> {debug_info_key,'********'};
(Other) -> Other
end, Opts0),
Opts2 = [O || O <- Opts1, effects_code_generation(O)],
case beam_asm:module(Code0, Abst, Source, Opts2) of
{ok,Code} -> {ok,St#compile{code=Code,abstract_code=[]}}
end.
test_native(#compile{options=Opts}) ->
%% This test is done late, in case some other option has turned off native.
%% 'native' given on the command line can be overridden by
%% 'no_native' in the module itself.
is_native_enabled(Opts).
is_native_enabled([native|_]) -> true;
is_native_enabled([no_native|_]) -> false;
is_native_enabled([_|Opts]) -> is_native_enabled(Opts);
is_native_enabled([]) -> false.
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 = St#compile.options,
IgnoreErrors = member(ignore_native_errors, Opts0),
Opts = case keyfind(hipe, 1, Opts0) of
{hipe,L} when is_list(L) -> L;
{hipe,X} -> [X];
_ -> []
end,
try hipe:compile(St#compile.module,
St#compile.core_code,
St#compile.code,
Opts) of
{ok,{_Type,Bin}=T} when is_binary(Bin) ->
{ok,embed_native_code(St, T)};
{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
catch
Class:R ->
Stk = erlang:get_stacktrace(),
case IgnoreErrors of
true ->
Ws = [{St#compile.ifile,
[{none,?MODULE,{native_crash,R,Stk}}]}],
{ok,St#compile{warnings=St#compile.warnings ++ Ws}};
false ->
erlang:raise(Class, R, Stk)
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}.
%% effects_code_generation(Option) -> true|false.
%% Determine whether the option could have any effect on the
%% generated code in the BEAM file (as opposed to how
%% errors will be reported).
effects_code_generation(Option) ->
case Option of
beam -> false;
report_warnings -> false;
report_errors -> false;
return_errors-> false;
return_warnings-> false;
binary -> false;
verbose -> false;
{cwd,_} -> false;
_ -> true
end.
save_binary(#compile{code=none}=St) -> {ok,St};
save_binary(#compile{module=Mod,ofile=Outfile,
options=Opts}=St) ->
%% Test that the module name and output file name match.
case member(no_error_module_mismatch, Opts) of
true ->
save_binary_1(St);
false ->
Base = filename:rootname(filename:basename(Outfile)),
case atom_to_list(Mod) of
Base ->
save_binary_1(St);
_ ->
Es = [{St#compile.ofile,
[{none,?MODULE,{module_name,Mod,Base}}]}],
{error,St#compile{errors=St#compile.errors ++ Es}}
end
end.
save_binary_1(St) ->
Ofile = St#compile.ofile,
Tfile = tmpfile(Ofile), %Temp working file
case write_binary(Tfile, St#compile.code, St) of
ok ->
case file:rename(Tfile, Ofile) of
ok ->
{ok,St};
{error,RenameError} ->
Es0 = [{Ofile,[{none,?MODULE,{rename,Tfile,Ofile,
RenameError}}]}],
Es = case file:delete(Tfile) of
ok -> Es0;
{error,DeleteError} ->
Es0 ++
[{Ofile,
[{none,?MODULE,{delete_temp,Tfile,
DeleteError}}]}]
end,
{error,St#compile{errors=St#compile.errors ++ Es}}
end;
{error,_Error} ->
Es = [{Tfile,[{none,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(#compile{options=Opts,errors=Errors}) ->
case member(report_errors, Opts) of
true ->
foreach(fun ({{F,_L},Eds}) -> list_errors(F, Eds);
({F,Eds}) -> list_errors(F, Eds) end,
Errors);
false -> ok
end.
report_warnings(#compile{options=Opts,warnings=Ws0}) ->
Werror = member(warnings_as_errors, Opts),
P = case Werror of
true -> "";
false -> "Warning: "
end,
ReportWerror = Werror andalso member(report_errors, Opts),
case member(report_warnings, Opts) orelse ReportWerror of
true ->
Ws1 = flatmap(fun({{F,_L},Eds}) -> format_message(F, P, Eds);
({F,Eds}) -> format_message(F, P, Eds) end,
Ws0),
Ws = lists:sort(Ws1),
foreach(fun({_,Str}) -> io:put_chars(Str) end, Ws);
false -> ok
end.
format_message(F, P, [{none,Mod,E}|Es]) ->
M = {none,io_lib:format("~ts: ~s~ts\n", [F,P,Mod:format_error(E)])},
[M|format_message(F, P, Es)];
format_message(F, P, [{{Line,Column}=Loc,Mod,E}|Es]) ->
M = {{F,Loc},io_lib:format("~ts:~w:~w ~s~ts\n",
[F,Line,Column,P,Mod:format_error(E)])},
[M|format_message(F, P, Es)];
format_message(F, P, [{Line,Mod,E}|Es]) ->
M = {{F,{Line,0}},io_lib:format("~ts:~w: ~s~ts\n",
[F,Line,P,Mod:format_error(E)])},
[M|format_message(F, P, Es)];
format_message(F, P, [{Mod,E}|Es]) ->
%% Not documented and not expected to be used any more, but
%% keep a while just in case.
M = {none,io_lib:format("~ts: ~s~ts\n", [F,P,Mod:format_error(E)])},
[M|format_message(F, P, Es)];
format_message(_, _, []) -> [].
%% list_errors(File, ErrorDescriptors) -> ok
list_errors(F, [{none,Mod,E}|Es]) ->
io:fwrite("~ts: ~ts\n", [F,Mod:format_error(E)]),
list_errors(F, Es);
list_errors(F, [{{Line,Column},Mod,E}|Es]) ->
io:fwrite("~ts:~w:~w: ~ts\n", [F,Line,Column,Mod:format_error(E)]),
list_errors(F, Es);
list_errors(F, [{Line,Mod,E}|Es]) ->
io:fwrite("~ts:~w: ~ts\n", [F,Line,Mod:format_error(E)]),
list_errors(F, Es);
list_errors(F, [{Mod,E}|Es]) ->
%% Not documented and not expected to be used any more, but
%% keep a while just in case.
io:fwrite("~ts: ~ts\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 is_atom(File) ->
iofile(atom_to_list(File));
iofile(File) ->
{filename:dirname(File), filename:basename(File, ".erl")}.
erlfile(".", Base, Suffix) ->
Base ++ Suffix;
erlfile(Dir, Base, Suffix) ->
filename:join(Dir, Base ++ Suffix).
outfile(Base, Ext, Opts) when is_atom(Ext) ->
outfile(Base, atom_to_list(Ext), Opts);
outfile(Base, Ext, Opts) ->
Obase = case keyfind(outdir, 1, Opts) of
{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, is_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) ->
Opts = [lists:keyfind(encoding, 1, io:getopts(Lf))],
foreach(fun (F) -> io:put_chars(Lf, [erl_pp:form(F, Opts),"\n"]) end,
Fs).
listing(Ext, St0) ->
St = St0#compile{encoding = none},
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} ->
Code = restore_expanded_types(Ext, St#compile.code),
output_encoding(Lf, St),
LFun(Lf, Code),
ok = file:close(Lf),
{ok,St};
{error,_Error} ->
Es = [{Lfile,[{none,compile,write_error}]}],
{error,St#compile{errors=St#compile.errors ++ Es}}
end.
output_encoding(F, #compile{encoding = none}) ->
ok = io:setopts(F, [{encoding, epp:default_encoding()}]);
output_encoding(F, #compile{encoding = Encoding}) ->
ok = io:setopts(F, [{encoding, Encoding}]),
ok = io:fwrite(F, <<"%% ~s\n">>, [epp:encoding_to_string(Encoding)]).
restore_expanded_types("P", Fs) ->
epp:restore_typed_record_fields(Fs);
restore_expanded_types("E", {M,I,Fs0}) ->
Fs1 = restore_expand_module(Fs0),
Fs = epp:restore_typed_record_fields(Fs1),
{M,I,Fs};
restore_expanded_types(_Ext, Code) -> Code.
restore_expand_module([{attribute,Line,type,[Type]}|Fs]) ->
[{attribute,Line,type,Type}|restore_expand_module(Fs)];
restore_expand_module([{attribute,Line,opaque,[Type]}|Fs]) ->
[{attribute,Line,opaque,Type}|restore_expand_module(Fs)];
restore_expand_module([{attribute,Line,spec,[Arg]}|Fs]) ->
[{attribute,Line,spec,Arg}|restore_expand_module(Fs)];
restore_expand_module([{attribute,Line,callback,[Arg]}|Fs]) ->
[{attribute,Line,callback,Arg}|restore_expand_module(Fs)];
restore_expand_module([F|Fs]) ->
[F|restore_expand_module(Fs)];
restore_expand_module([]) -> [].
-spec options() -> 'ok'.
options() ->
help(standard_passes()).
help([{delay,Ps}|T]) ->
help(Ps),
help(T);
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 is_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 is_list(List) ->
%% Hard-coded knowledge 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, [from_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 ->
case lists:nthtail(length(Cwd), Name0) of
"/"++N -> N;
N -> N
end
end.
%% Converts generic compiler options to specific options.
make_erl_options(Opts) ->
#options{includes=Includes,
defines=Defines,
outdir=Outdir,
warning=Warning,
verbose=Verbose,
specific=Specific,
output_type=OutputType,
cwd=Cwd} = Opts,
Options = [verbose || Verbose] ++
[report_warnings || Warning =/= 0] ++
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}|
[{i, Dir} || Dir <- Includes]] ++ Specific.
