%% -*- erlang-indent-level: 2 -*-
%%-----------------------------------------------------------------------
%% %CopyrightBegin%
%%
%% Copyright Ericsson AB 2006-2015. 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%
%%
%%%-------------------------------------------------------------------
%%% File : dialyzer_utils.erl
%%% Author : Tobias Lindahl <[email protected]>
%%% Description :
%%%
%%% Created : 5 Dec 2006 by Tobias Lindahl <[email protected]>
%%%-------------------------------------------------------------------
-module(dialyzer_utils).
-export([
format_sig/1,
format_sig/2,
get_abstract_code_from_beam/1,
get_compile_options_from_beam/1,
get_abstract_code_from_src/1,
get_abstract_code_from_src/2,
get_core_from_abstract_code/1,
get_core_from_abstract_code/2,
get_core_from_src/1,
get_core_from_src/2,
get_record_and_type_info/1,
get_spec_info/3,
get_fun_meta_info/3,
is_suppressed_fun/2,
is_suppressed_tag/3,
merge_records/2,
pp_hook/0,
process_record_remote_types/1,
sets_filter/2,
src_compiler_opts/0,
parallelism/0,
family/1
]).
-include("dialyzer.hrl").
%%-define(DEBUG, true).
-ifdef(DEBUG).
print_types(RecDict) ->
Keys = dict:fetch_keys(RecDict),
print_types1(Keys, RecDict).
print_types1([], _) ->
ok;
print_types1([{type, _Name} = Key|T], RecDict) ->
{ok, {_Mod, Form, _Args}} = dict:find(Key, RecDict),
io:format("\n~w: ~w\n", [Key, erl_types:t_from_form(Form, RecDict)]),
print_types1(T, RecDict);
print_types1([{opaque, _Name} = Key|T], RecDict) ->
{ok, {_Mod, Form, _Args}} = dict:find(Key, RecDict),
io:format("\n~w: ~w\n", [Key, erl_types:t_from_form(Form, RecDict)]),
print_types1(T, RecDict);
print_types1([{record, _Name} = Key|T], RecDict) ->
{ok, [{_Arity, _Fields} = AF]} = dict:find(Key, RecDict),
io:format("~w: ~w\n\n", [Key, AF]),
print_types1(T, RecDict).
-define(debug(D_), print_types(D_)).
-else.
-define(debug(D_), ok).
-endif.
%% ----------------------------------------------------------------------------
-type abstract_code() :: [tuple()]. %% XXX: import from somewhere
-type comp_options() :: [compile:option()].
-type mod_or_fname() :: module() | file:filename().
-type fa() :: {atom(), arity()}.
-type codeserver() :: dialyzer_codeserver:codeserver().
%% ============================================================================
%%
%% Compilation utils
%%
%% ============================================================================
-spec get_abstract_code_from_src(mod_or_fname()) ->
{'ok', abstract_code()} | {'error', [string()]}.
get_abstract_code_from_src(File) ->
get_abstract_code_from_src(File, src_compiler_opts()).
-spec get_abstract_code_from_src(mod_or_fname(), comp_options()) ->
{'ok', abstract_code()} | {'error', [string()]}.
get_abstract_code_from_src(File, Opts) ->
case compile:noenv_file(File, [to_pp, binary|Opts]) of
error -> {error, []};
{error, Errors, _} -> {error, format_errors(Errors)};
{ok, _, AbstrCode} -> {ok, AbstrCode}
end.
-type get_core_from_src_ret() :: {'ok', cerl:c_module()} | {'error', string()}.
-spec get_core_from_src(file:filename()) -> get_core_from_src_ret().
get_core_from_src(File) ->
get_core_from_src(File, []).
-spec get_core_from_src(file:filename(), comp_options()) -> get_core_from_src_ret().
get_core_from_src(File, Opts) ->
case get_abstract_code_from_src(File, Opts) of
{error, _} = Error -> Error;
{ok, AbstrCode} ->
case get_core_from_abstract_code(AbstrCode, Opts) of
error -> {error, " Could not get Core Erlang code from abstract code"};
{ok, _Core} = C -> C
end
end.
-spec get_abstract_code_from_beam(file:filename()) -> 'error' | {'ok', abstract_code()}.
get_abstract_code_from_beam(File) ->
case beam_lib:chunks(File, [abstract_code]) of
{ok, {_, List}} ->
case lists:keyfind(abstract_code, 1, List) of
{abstract_code, {raw_abstract_v1, Abstr}} -> {ok, Abstr};
_ -> error
end;
_ ->
%% No or unsuitable abstract code.
error
end.
-spec get_compile_options_from_beam(file:filename()) -> 'error' | {'ok', [compile:option()]}.
get_compile_options_from_beam(File) ->
case beam_lib:chunks(File, [compile_info]) of
{ok, {_, List}} ->
case lists:keyfind(compile_info, 1, List) of
{compile_info, CompInfo} -> compile_info_to_options(CompInfo);
_ -> error
end;
_ ->
%% No or unsuitable compile info.
error
end.
compile_info_to_options(CompInfo) ->
case lists:keyfind(options, 1, CompInfo) of
{options, CompOpts} -> {ok, CompOpts};
_ -> error
end.
-type get_core_from_abs_ret() :: {'ok', cerl:c_module()} | 'error'.
-spec get_core_from_abstract_code(abstract_code()) -> get_core_from_abs_ret().
get_core_from_abstract_code(AbstrCode) ->
get_core_from_abstract_code(AbstrCode, []).
-spec get_core_from_abstract_code(abstract_code(), comp_options()) -> get_core_from_abs_ret().
get_core_from_abstract_code(AbstrCode, Opts) ->
%% We do not want the parse_transforms around since we already
%% performed them. In some cases we end up in trouble when
%% performing them again.
AbstrCode1 = cleanup_parse_transforms(AbstrCode),
%% Remove parse_transforms (and other options) from compile options.
Opts2 = cleanup_compile_options(Opts),
try compile:noenv_forms(AbstrCode1, Opts2 ++ src_compiler_opts()) of
{ok, _, Core} -> {ok, Core};
_What -> error
catch
error:_ -> error
end.
%% ============================================================================
%%
%% Typed Records
%%
%% ============================================================================
-spec get_record_and_type_info(abstract_code()) ->
{'ok', dict:dict()} | {'error', string()}.
get_record_and_type_info(AbstractCode) ->
Module = get_module(AbstractCode),
get_record_and_type_info(AbstractCode, Module, dict:new()).
-spec get_record_and_type_info(abstract_code(), module(), dict:dict()) ->
{'ok', dict:dict()} | {'error', string()}.
get_record_and_type_info(AbstractCode, Module, RecDict) ->
get_record_and_type_info(AbstractCode, Module, [], RecDict).
get_record_and_type_info([{attribute, _, record, {Name, Fields0}}|Left],
Module, Records, RecDict) ->
{ok, Fields} = get_record_fields(Fields0, RecDict),
Arity = length(Fields),
NewRecDict = dict:store({record, Name}, [{Arity, Fields}], RecDict),
get_record_and_type_info(Left, Module, [{record, Name}|Records], NewRecDict);
get_record_and_type_info([{attribute, _, type, {{record, Name}, Fields0, []}}
|Left], Module, Records, RecDict) ->
%% This overrides the original record declaration.
{ok, Fields} = get_record_fields(Fields0, RecDict),
Arity = length(Fields),
NewRecDict = dict:store({record, Name}, [{Arity, Fields}], RecDict),
get_record_and_type_info(Left, Module, Records, NewRecDict);
get_record_and_type_info([{attribute, _, Attr, {Name, TypeForm}}|Left],
Module, Records, RecDict) when Attr =:= 'type';
Attr =:= 'opaque' ->
try add_new_type(Attr, Name, TypeForm, [], Module, RecDict) of
NewRecDict ->
get_record_and_type_info(Left, Module, Records, NewRecDict)
catch
throw:{error, _} = Error -> Error
end;
get_record_and_type_info([{attribute, _, Attr, {Name, TypeForm, Args}}|Left],
Module, Records, RecDict) when Attr =:= 'type';
Attr =:= 'opaque' ->
try add_new_type(Attr, Name, TypeForm, Args, Module, RecDict) of
NewRecDict ->
get_record_and_type_info(Left, Module, Records, NewRecDict)
catch
throw:{error, _} = Error -> Error
end;
get_record_and_type_info([_Other|Left], Module, Records, RecDict) ->
get_record_and_type_info(Left, Module, Records, RecDict);
get_record_and_type_info([], _Module, Records, RecDict) ->
case
check_type_of_record_fields(lists:reverse(Records), RecDict)
of
ok ->
{ok, RecDict};
{error, Name, Error} ->
{error, flat_format(" Error while parsing #~w{}: ~s\n", [Name, Error])}
end.
add_new_type(TypeOrOpaque, Name, TypeForm, ArgForms, Module, RecDict) ->
Arity = length(ArgForms),
case erl_types:type_is_defined(TypeOrOpaque, Name, Arity, RecDict) of
true ->
Msg = flat_format("Type ~s/~w already defined\n", [Name, Arity]),
throw({error, Msg});
false ->
try erl_types:t_var_names(ArgForms) of
ArgNames ->
dict:store({TypeOrOpaque, Name, Arity},
{Module, TypeForm, ArgNames}, RecDict)
catch
_:_ ->
throw({error, flat_format("Type declaration for ~w does not "
"have variables as parameters", [Name])})
end
end.
get_record_fields(Fields, RecDict) ->
Fs = get_record_fields(Fields, RecDict, []),
{ok, [{Name, Form, erl_types:t_any()} || {Name, Form} <- Fs]}.
get_record_fields([{typed_record_field, OrdRecField, TypeForm}|Left],
RecDict, Acc) ->
Name =
case OrdRecField of
{record_field, _Line, Name0} -> erl_parse:normalise(Name0);
{record_field, _Line, Name0, _Init} -> erl_parse:normalise(Name0)
end,
get_record_fields(Left, RecDict, [{Name, TypeForm}|Acc]);
get_record_fields([{record_field, _Line, Name}|Left], RecDict, Acc) ->
NewAcc = [{erl_parse:normalise(Name), {var, -1, '_'}}|Acc],
get_record_fields(Left, RecDict, NewAcc);
get_record_fields([{record_field, _Line, Name, _Init}|Left], RecDict, Acc) ->
NewAcc = [{erl_parse:normalise(Name), {var, -1, '_'}}|Acc],
get_record_fields(Left, RecDict, NewAcc);
get_record_fields([], _RecDict, Acc) ->
lists:reverse(Acc).
%% Just check the local types. process_record_remote_types will add
%% the types later.
check_type_of_record_fields([], _RecDict) ->
ok;
check_type_of_record_fields([RecKey|Recs], RecDict) ->
{ok, [{_Arity, Fields}]} = dict:find(RecKey, RecDict),
try
[erl_types:t_from_form_without_remote(FieldTypeForm, RecDict)
|| {_FieldName, FieldTypeForm, _} <- Fields]
of
L when is_list(L) ->
check_type_of_record_fields(Recs, RecDict)
catch
throw:{error, Error} ->
{record, Name} = RecKey,
{error, Name, Error}
end.
-spec process_record_remote_types(codeserver()) -> codeserver().
%% The field types are cached. Used during analysis when handling records.
process_record_remote_types(CServer) ->
TempRecords = dialyzer_codeserver:get_temp_records(CServer),
TempExpTypes = dialyzer_codeserver:get_temp_exported_types(CServer),
ModuleFun =
fun(Module, Record) ->
RecordFun =
fun(Key, Value) ->
case Key of
{record, _Name} ->
FieldFun =
fun(_Arity, Fields) ->
[{Name, Field,
erl_types:t_from_form(Field,
TempExpTypes,
Module,
TempRecords)}
|| {Name, Field, _} <- Fields]
end,
orddict:map(FieldFun, Value);
_Other -> Value
end
end,
dict:map(RecordFun, Record)
end,
try dict:map(ModuleFun, TempRecords) of
NewRecords ->
CServer1 = dialyzer_codeserver:finalize_records(NewRecords, CServer),
dialyzer_codeserver:finalize_exported_types(TempExpTypes, CServer1)
catch
throw:{error, _RecName, _Error} = Error->
Error
end.
-spec merge_records(dict:dict(), dict:dict()) -> dict:dict().
merge_records(NewRecords, OldRecords) ->
dict:merge(fun(_Key, NewVal, _OldVal) -> NewVal end, NewRecords, OldRecords).
%% ============================================================================
%%
%% Spec info
%%
%% ============================================================================
-type spec_dict() :: dict:dict().
-type callback_dict() :: dict:dict().
-spec get_spec_info(module(), abstract_code(), dict:dict()) ->
{'ok', spec_dict(), callback_dict()} | {'error', string()}.
get_spec_info(ModName, AbstractCode, RecordsDict) ->
OptionalCallbacks0 = get_optional_callbacks(AbstractCode, ModName),
OptionalCallbacks = gb_sets:from_list(OptionalCallbacks0),
get_spec_info(AbstractCode, dict:new(), dict:new(),
RecordsDict, ModName, OptionalCallbacks, "nofile").
get_optional_callbacks(Abs, ModName) ->
[{ModName, F, A} || {F, A} <- get_optional_callbacks(Abs)].
get_optional_callbacks(Abs) ->
L = [O ||
{attribute, _, optional_callbacks, O} <- Abs,
is_fa_list(O)],
lists:append(L).
%% TypeSpec is a list of conditional contracts for a function.
%% Each contract is of the form {[Argument], Range, [Constraint]} where
%% - Argument and Range are in erl_types:erl_type() format and
%% - Constraint is of the form {subtype, T1, T2} where T1 and T2
%% are erl_types:erl_type()
get_spec_info([{attribute, Ln, Contract, {Id, TypeSpec}}|Left],
SpecDict, CallbackDict, RecordsDict, ModName, OptCb, File)
when ((Contract =:= 'spec') or (Contract =:= 'callback')),
is_list(TypeSpec) ->
MFA = case Id of
{_, _, _} = T -> T;
{F, A} -> {ModName, F, A}
end,
Xtra = [optional_callback || gb_sets:is_member(MFA, OptCb)],
ActiveDict =
case Contract of
spec -> SpecDict;
callback -> CallbackDict
end,
try dict:find(MFA, ActiveDict) of
error ->
SpecData = {TypeSpec, Xtra},
NewActiveDict =
dialyzer_contracts:store_tmp_contract(MFA, {File, Ln}, SpecData,
ActiveDict, RecordsDict),
{NewSpecDict, NewCallbackDict} =
case Contract of
spec -> {NewActiveDict, CallbackDict};
callback -> {SpecDict, NewActiveDict}
end,
get_spec_info(Left, NewSpecDict, NewCallbackDict,
RecordsDict, ModName, OptCb, File);
{ok, {{OtherFile, L}, _D}} ->
{Mod, Fun, Arity} = MFA,
Msg = flat_format(" Contract/callback for function ~w:~w/~w "
"already defined in ~s:~w\n",
[Mod, Fun, Arity, OtherFile, L]),
throw({error, Msg})
catch
throw:{error, Error} ->
{error, flat_format(" Error while parsing contract in line ~w: ~s\n",
[Ln, Error])}
end;
get_spec_info([{attribute, _, file, {IncludeFile, _}}|Left],
SpecDict, CallbackDict, RecordsDict, ModName, OptCb, _File) ->
get_spec_info(Left, SpecDict, CallbackDict,
RecordsDict, ModName, OptCb, IncludeFile);
get_spec_info([_Other|Left], SpecDict, CallbackDict,
RecordsDict, ModName, OptCb, File) ->
get_spec_info(Left, SpecDict, CallbackDict,
RecordsDict, ModName, OptCb, File);
get_spec_info([], SpecDict, CallbackDict,
_RecordsDict, _ModName, _OptCb, _File) ->
{ok, SpecDict, CallbackDict}.
-spec get_fun_meta_info(module(), abstract_code(), [dial_warn_tag()]) ->
dialyzer_codeserver:fun_meta_info().
get_fun_meta_info(M, Abs, LegalWarnings) ->
NoWarn = get_nowarn_unused_function(M, Abs),
FuncSupp = get_func_suppressions(M, Abs),
Warnings0 = get_options(Abs, LegalWarnings),
Warnings = ordsets:to_list(Warnings0),
ModuleWarnings = [{M, W} || W <- Warnings],
RawProps = lists:append([NoWarn, FuncSupp, ModuleWarnings]),
process_options(dialyzer_utils:family(RawProps), Warnings0).
process_options([{M, _}=Mod|Left], Warnings) when is_atom(M) ->
[Mod|process_options(Left, Warnings)];
process_options([{{_M, _F, _A}=MFA, Opts}|Left], Warnings) ->
WL = case lists:member(nowarn_function, Opts) of
true -> [{nowarn_function, func}]; % takes precedence
false ->
Ws = dialyzer_options:build_warnings(Opts, Warnings),
ModOnly = [{W, mod} || W <- ordsets:subtract(Warnings, Ws)],
FunOnly = [{W, func} || W <- ordsets:subtract(Ws, Warnings)],
ordsets:union(ModOnly, FunOnly)
end,
case WL of
[] -> process_options(Left, Warnings);
_ -> [{MFA, WL}|process_options(Left, Warnings)]
end;
process_options([], _Warnings) -> [].
-spec get_nowarn_unused_function(module(), abstract_code()) ->
[{mfa(), 'no_unused'}].
get_nowarn_unused_function(M, Abs) ->
Opts = get_options_with_tag(compile, Abs),
Warn = erl_lint:bool_option(warn_unused_function, nowarn_unused_function,
true, Opts),
Functions = [{F, A} || {function, _, F, A, _} <- Abs],
AttrFile = collect_attribute(Abs, compile),
TagsFaList = check_fa_list(AttrFile, nowarn_unused_function, Functions),
FAs = case Warn of
false -> Functions;
true ->
[FA || {{nowarn_unused_function,_L,_File}, FA} <- TagsFaList]
end,
[{{M, F, A}, no_unused} || {F, A} <- FAs].
-spec get_func_suppressions(module(), abstract_code()) ->
[{mfa(), 'nowarn_function' | dial_warn_tag()}].
get_func_suppressions(M, Abs) ->
Functions = [{F, A} || {function, _, F, A, _} <- Abs],
AttrFile = collect_attribute(Abs, dialyzer),
TagsFAs = check_fa_list(AttrFile, '*', Functions),
%% Check the options:
Fun = fun({{nowarn_function, _L, _File}, _FA}) -> ok;
({OptLFile, _FA}) ->
_ = get_options1([OptLFile], ordsets:new())
end,
lists:foreach(Fun, TagsFAs),
[{{M, F, A}, W} || {{W, _L, _File}, {F, A}} <- TagsFAs].
-spec get_options(abstract_code(), [dial_warn_tag()]) ->
ordsets:ordset(dial_warn_tag()).
get_options(Abs, LegalWarnings) ->
AttrFile = collect_attribute(Abs, dialyzer),
get_options1(AttrFile, LegalWarnings).
get_options1([{Args, L, File}|Left], Warnings) ->
Opts = [O ||
O <- lists:flatten([Args]),
is_atom(O)],
try dialyzer_options:build_warnings(Opts, Warnings) of
NewWarnings ->
get_options1(Left, NewWarnings)
catch
throw:{dialyzer_options_error, Msg} ->
Msg1 = flat_format(" ~s:~w: ~s", [File, L, Msg]),
throw({error, Msg1})
end;
get_options1([], Warnings) ->
Warnings.
-type collected_attribute() ::
{Args :: term(), erl_scan:line(), file:filename()}.
collect_attribute(Abs, Tag) ->
collect_attribute(Abs, Tag, "nofile").
collect_attribute([{attribute, L, Tag, Args}|Left], Tag, File) ->
CollAttr = {Args, L, File},
[CollAttr | collect_attribute(Left, Tag, File)];
collect_attribute([{attribute, _, file, {IncludeFile, _}}|Left], Tag, _) ->
collect_attribute(Left, Tag, IncludeFile);
collect_attribute([_Other|Left], Tag, File) ->
collect_attribute(Left, Tag, File);
collect_attribute([], _Tag, _File) -> [].
-spec is_suppressed_fun(mfa(), codeserver()) -> boolean().
is_suppressed_fun(MFA, CodeServer) ->
lookup_fun_property(MFA, nowarn_function, CodeServer).
-spec is_suppressed_tag(mfa() | module(), dial_warn_tag(), codeserver()) ->
boolean().
is_suppressed_tag(MorMFA, Tag, Codeserver) ->
not lookup_fun_property(MorMFA, Tag, Codeserver).
lookup_fun_property({M, _F, _A}=MFA, Property, CodeServer) ->
MFAPropList = dialyzer_codeserver:lookup_meta_info(MFA, CodeServer),
case proplists:get_value(Property, MFAPropList, no) of
mod -> false; % suppressed in function
func -> true; % requested in function
no -> lookup_fun_property(M, Property, CodeServer)
end;
lookup_fun_property(M, Property, CodeServer) when is_atom(M) ->
MPropList = dialyzer_codeserver:lookup_meta_info(M, CodeServer),
proplists:is_defined(Property, MPropList).
%% ============================================================================
%%
%% Exported types
%%
%% ============================================================================
-spec sets_filter([module()], sets:set()) -> sets:set().
sets_filter([], ExpTypes) ->
ExpTypes;
sets_filter([Mod|Mods], ExpTypes) ->
NewExpTypes = sets:filter(fun({M, _F, _A}) -> M =/= Mod end, ExpTypes),
sets_filter(Mods, NewExpTypes).
%% ============================================================================
%%
%% Util utils
%%
%% ============================================================================
-spec src_compiler_opts() -> [compile:option(),...].
src_compiler_opts() ->
[no_copt, to_core, binary, return_errors,
no_inline, strict_record_tests, strict_record_updates,
dialyzer].
-spec get_module(abstract_code()) -> module().
get_module([{attribute, _, module, {M, _As}} | _]) -> M;
get_module([{attribute, _, module, M} | _]) -> M;
get_module([_ | Rest]) -> get_module(Rest).
-spec cleanup_parse_transforms(abstract_code()) -> abstract_code().
cleanup_parse_transforms([{attribute, _, compile, {parse_transform, _}}|Left]) ->
cleanup_parse_transforms(Left);
cleanup_parse_transforms([Other|Left]) ->
[Other|cleanup_parse_transforms(Left)];
cleanup_parse_transforms([]) ->
[].
-spec cleanup_compile_options([compile:option()]) -> [compile:option()].
cleanup_compile_options(Opts) ->
lists:filter(fun keep_compile_option/1, Opts).
%% Using abstract, not asm or core.
keep_compile_option(from_asm) -> false;
keep_compile_option(from_core) -> false;
%% The parse transform will already have been applied, may cause
%% problems if it is re-applied.
keep_compile_option({parse_transform, _}) -> false;
keep_compile_option(warnings_as_errors) -> false;
keep_compile_option(_) -> true.
-spec format_errors([{module(), string()}]) -> [string()].
format_errors([{Mod, Errors}|Left]) ->
FormatedError =
[io_lib:format("~s:~w: ~s\n", [Mod, Line, M:format_error(Desc)])
|| {Line, M, Desc} <- Errors],
[lists:flatten(FormatedError) | format_errors(Left)];
format_errors([]) ->
[].
-spec format_sig(erl_types:erl_type()) -> string().
format_sig(Type) ->
format_sig(Type, dict:new()).
-spec format_sig(erl_types:erl_type(), dict:dict()) -> string().
format_sig(Type, RecDict) ->
"fun(" ++ Sig = lists:flatten(erl_types:t_to_string(Type, RecDict)),
")" ++ RevSig = lists:reverse(Sig),
lists:reverse(RevSig).
flat_format(Fmt, Lst) ->
lists:flatten(io_lib:format(Fmt, Lst)).
-spec get_options_with_tag(atom(), abstract_code()) -> [term()].
get_options_with_tag(Tag, Abs) ->
lists:flatten([O || {attribute, _, Tag0, O} <- Abs, Tag =:= Tag0]).
%% Check F/A, and collect (unchecked) warning tags with line and file.
-spec check_fa_list([collected_attribute()], atom(), [fa()]) ->
[{{atom(), erl_scan:line(), file:filename()},fa()}].
check_fa_list(AttrFile, Tag, Functions) ->
FuncTab = gb_sets:from_list(Functions),
check_fa_list1(AttrFile, Tag, FuncTab).
check_fa_list1([{Args, L, File}|Left], Tag, Funcs) ->
TermsL = [{{Tag0, L, File}, Term} ||
{Tags, Terms0} <- lists:flatten([Args]),
Tag0 <- lists:flatten([Tags]),
Tag =:= '*' orelse Tag =:= Tag0,
Term <- lists:flatten([Terms0])],
case lists:dropwhile(fun({_, T}) -> is_fa(T) end, TermsL) of
[] -> ok;
[{_, Bad}|_] ->
Msg1 = flat_format(" Bad function ~w in line ~s:~w",
[Bad, File, L]),
throw({error, Msg1})
end,
case lists:dropwhile(fun({_, FA}) -> is_known(FA, Funcs) end, TermsL) of
[] -> ok;
[{_, {F, A}}|_] ->
Msg2 = flat_format(" Unknown function ~w/~w in line ~s:~w",
[F, A, File, L]),
throw({error, Msg2})
end,
TermsL ++ check_fa_list1(Left, Tag, Funcs);
check_fa_list1([], _Tag, _Funcs) -> [].
is_known(FA, Funcs) ->
gb_sets:is_element(FA, Funcs).
-spec is_fa_list(term()) -> boolean().
is_fa_list([E|L]) -> is_fa(E) andalso is_fa_list(L);
is_fa_list([]) -> true;
is_fa_list(_) -> false.
-spec is_fa(term()) -> boolean().
is_fa({FuncName, Arity})
when is_atom(FuncName), is_integer(Arity), Arity >= 0 -> true;
is_fa(_) -> false.
%%-------------------------------------------------------------------
%% Author : Per Gustafsson <[email protected]>
%% Description : Provides better printing of binaries.
%% Created : 5 March 2007
%%-------------------------------------------------------------------
-spec pp_hook() -> fun((cerl:cerl(), _, _) -> term()).
pp_hook() ->
fun pp_hook/3.
pp_hook(Node, Ctxt, Cont) ->
case cerl:type(Node) of
binary ->
pp_binary(Node, Ctxt, Cont);
bitstr ->
pp_segment(Node, Ctxt, Cont);
_ ->
Cont(Node, Ctxt)
end.
pp_binary(Node, Ctxt, Cont) ->
prettypr:beside(prettypr:text("<<"),
prettypr:beside(pp_segments(cerl:binary_segments(Node),
Ctxt, Cont),
prettypr:text(">>"))).
pp_segments([Seg], Ctxt, Cont) ->
pp_segment(Seg, Ctxt, Cont);
pp_segments([], _Ctxt, _Cont) ->
prettypr:text("");
pp_segments([Seg|Rest], Ctxt, Cont) ->
prettypr:beside(pp_segment(Seg, Ctxt, Cont),
prettypr:beside(prettypr:text(","),
pp_segments(Rest, Ctxt, Cont))).
pp_segment(Node, Ctxt, Cont) ->
Val = cerl:bitstr_val(Node),
Size = cerl:bitstr_size(Node),
Unit = cerl:bitstr_unit(Node),
Type = cerl:bitstr_type(Node),
Flags = cerl:bitstr_flags(Node),
prettypr:beside(Cont(Val, Ctxt),
prettypr:beside(pp_size(Size, Ctxt, Cont),
prettypr:beside(pp_opts(Type, Flags),
pp_unit(Unit, Ctxt, Cont)))).
pp_size(Size, Ctxt, Cont) ->
case cerl:is_c_atom(Size) of
true ->
prettypr:text("");
false ->
prettypr:beside(prettypr:text(":"), Cont(Size, Ctxt))
end.
pp_opts(Type, Flags) ->
FinalFlags =
case cerl:atom_val(Type) of
binary -> [];
float -> keep_endian(cerl:concrete(Flags));
integer -> keep_all(cerl:concrete(Flags));
utf8 -> [];
utf16 -> [];
utf32 -> []
end,
prettypr:beside(prettypr:text("/"),
prettypr:beside(pp_atom(Type),
pp_flags(FinalFlags))).
pp_flags([]) ->
prettypr:text("");
pp_flags([Flag|Flags]) ->
prettypr:beside(prettypr:text("-"),
prettypr:beside(pp_atom(Flag),
pp_flags(Flags))).
keep_endian(Flags) ->
[cerl:c_atom(X) || X <- Flags, (X =:= little) or (X =:= native)].
keep_all(Flags) ->
[cerl:c_atom(X) || X <- Flags,
(X =:= little) or (X =:= native) or (X =:= signed)].
pp_unit(Unit, Ctxt, Cont) ->
case cerl:concrete(Unit) of
N when is_integer(N) ->
prettypr:beside(prettypr:text("-"),
prettypr:beside(prettypr:text("unit:"),
Cont(Unit, Ctxt)));
_ -> % Other value: e.g. 'undefined' when UTF
prettypr:text("")
end.
pp_atom(Atom) ->
String = atom_to_list(cerl:atom_val(Atom)),
prettypr:text(String).
%%------------------------------------------------------------------------------
-spec parallelism() -> integer().
parallelism() ->
CPUs = erlang:system_info(logical_processors_available),
Schedulers = erlang:system_info(schedulers),
min(CPUs, Schedulers).
-spec family([{K,V}]) -> [{K,[V]}].
family(L) ->
sofs:to_external(sofs:rel2fam(sofs:relation(L))).
