diff options
Diffstat (limited to 'lib/dialyzer/src/dialyzer_utils.erl')
| -rw-r--r-- | lib/dialyzer/src/dialyzer_utils.erl | 197 |
1 files changed, 186 insertions, 11 deletions
diff --git a/lib/dialyzer/src/dialyzer_utils.erl b/lib/dialyzer/src/dialyzer_utils.erl index e5f5c69d45..01ade00664 100644 --- a/lib/dialyzer/src/dialyzer_utils.erl +++ b/lib/dialyzer/src/dialyzer_utils.erl @@ -40,12 +40,16 @@ 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 + parallelism/0, + family/1 ]). -include("dialyzer.hrl"). @@ -80,7 +84,9 @@ print_types1([{record, _Name} = Key|T], RecDict) -> -type abstract_code() :: [tuple()]. %% XXX: import from somewhere -type comp_options() :: [compile:option()]. --type mod_or_fname() :: atom() | file:filename(). +-type mod_or_fname() :: module() | file:filename(). +-type fa() :: {atom(), arity()}. +-type codeserver() :: dialyzer_codeserver:codeserver(). %% ============================================================================ %% @@ -300,7 +306,7 @@ type_record_fields([RecKey|Recs], RecDict) -> {error, Name, Error} end. --spec process_record_remote_types(dialyzer_codeserver:codeserver()) -> dialyzer_codeserver:codeserver(). +-spec process_record_remote_types(codeserver()) -> codeserver(). process_record_remote_types(CServer) -> TempRecords = dialyzer_codeserver:get_temp_records(CServer), @@ -341,7 +347,7 @@ merge_records(NewRecords, OldRecords) -> -type spec_dict() :: dict:dict(). -type callback_dict() :: dict:dict(). --spec get_spec_info(atom(), abstract_code(), dict:dict()) -> +-spec get_spec_info(module(), abstract_code(), dict:dict()) -> {'ok', spec_dict(), callback_dict()} | {'error', string()}. get_spec_info(ModName, AbstractCode, RecordsDict) -> @@ -359,13 +365,6 @@ get_optional_callbacks(Abs) -> 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. - - %% 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 @@ -422,6 +421,126 @@ 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 @@ -503,6 +622,57 @@ format_sig(Type, RecDict) -> 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. @@ -607,3 +777,8 @@ 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))). |