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typer.erl
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%% -*- erlang-indent-level: 2 -*-
%%-----------------------------------------------------------------------
%% %CopyrightBegin%
%%
%% Copyright Ericsson AB 2006-2011. 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 : typer.erl
%% Author(s) : The first version of typer was written by Bingwen He
%% with guidance from Kostis Sagonas and Tobias Lindahl.
%% Since June 2008 typer is maintained by Kostis Sagonas.
%% Description : An Erlang/OTP application that shows type information
%% for Erlang modules to the user. Additionally, it can
%% annotate the code of files with such type information.
%%-----------------------------------------------------------------------
-module(typer).
-export([start/0,get_type_inside_erl/1]).
%%-----------------------------------------------------------------------
-define(SHOW, show).
-define(SHOW_EXPORTED, show_exported).
-define(ANNOTATE, annotate).
-define(ANNOTATE_INC_FILES, annotate_inc_files).
-type mode() :: ?SHOW | ?SHOW_EXPORTED | ?ANNOTATE | ?ANNOTATE_INC_FILES.
%%-----------------------------------------------------------------------
-type files() :: [file:filename()].
-type callgraph() :: dialyzer_callgraph:callgraph().
-type codeserver() :: dialyzer_codeserver:codeserver().
-type plt() :: dialyzer_plt:plt().
-record(analysis,
{mode :: mode() | 'undefined',
macros = [] :: [{atom(), term()}],
includes = [] :: files(),
codeserver = dialyzer_codeserver:new():: codeserver(),
callgraph = dialyzer_callgraph:new() :: callgraph(),
files = [] :: files(), % absolute names
plt = none :: 'none' | file:filename(),
no_spec = false :: boolean(),
show_succ = false :: boolean(),
%% For choosing between specs or edoc @spec comments
edoc = false :: boolean(),
%% Files in 'fms' are compilable with option 'to_pp'; we keep them
%% as {FileName, ModuleName} in case the ModuleName is different
fms = [] :: [{file:filename(), module()}],
ex_func = map__new() :: map(),
record = map__new() :: map(),
func = map__new() :: map(),
inc_func = map__new() :: map(),
trust_plt = dialyzer_plt:new() :: plt()}).
-type analysis() :: #analysis{}.
-record(args, {files = [] :: files(),
files_r = [] :: files(),
trusted = [] :: files()}).
-type args() :: #args{}.
%%--------------------------------------------------------------------
get_type_inside_erl(ArgList)->
{Args, Analysis_} = analyze_args(ArgList, #args{}, #analysis{}),
%% if the mode has not been set, set it to the default mode (show)
Analysis=
case Analysis_#analysis.mode of
undefined -> Analysis_#analysis{mode = ?SHOW};
Mode when is_atom(Mode) -> Analysis_
end,
%io:format("Args: ~p -> ~p\n", [Args, Args#args.trusted]),
%io:format("Analysis: ~p\n", [Analysis]),
TrustedFiles = filter_fd(Args#args.trusted, [], fun is_erl_file/1),
Analysis2 = extract(Analysis, TrustedFiles),
All_Files = get_all_files(Args),
%io:format("All_Files: ~p\n", [All_Files]),
Analysis3 = Analysis2#analysis{files = All_Files},
Analysis4 = collect_info(Analysis3),
%% io:format("Final: ~p\n", [Analysis4#analysis.fms]),
TypeInfo = get_type_info(Analysis4),
%TypeInfo#analysis.fms.
[Result|_]=no_show(TypeInfo,TypeInfo#analysis.fms),
Result.
% Fun = fun ({File, Module}) ->
% Info = get_final_info(File, Module, TypeInfo),
% no_show_type_info(File, Info)
% end,
% lists:foreach(Fun, TypeInfo#analysis.fms).
%show_or_annotate(TypeInfo).
-spec start() -> no_return().
start() ->
{Args, Analysis} = process_cl_args(),
%% io:format("Args: ~p\n", [Args]),
%% io:format("Analysis: ~p\n", [Analysis]),
TrustedFiles = filter_fd(Args#args.trusted, [], fun is_erl_file/1),
Analysis2 = extract(Analysis, TrustedFiles),
All_Files = get_all_files(Args),
%% io:format("All_Files: ~p\n", [All_Files]),
Analysis3 = Analysis2#analysis{files = All_Files},
Analysis4 = collect_info(Analysis3),
%% io:format("Final: ~p\n", [Analysis4#analysis.fms]),
TypeInfo = get_type_info(Analysis4),
show_or_annotate(TypeInfo),
%% io:format("\nTyper analysis finished\n"),
erlang:halt(0).
%%--------------------------------------------------------------------
-spec extract(analysis(), files()) -> analysis().
extract(#analysis{macros = Macros,
includes = Includes,
trust_plt = TrustPLT} = Analysis, TrustedFiles) ->
%% io:format("--- Extracting trusted typer_info... "),
Ds = [{d, Name, Value} || {Name, Value} <- Macros],
CodeServer = dialyzer_codeserver:new(),
Fun =
fun(File, CS) ->
%% We include one more dir; the one above the one we are trusting
%% E.g, for /home/tests/typer_ann/test.ann.erl, we should include
%% /home/tests/ rather than /home/tests/typer_ann/
AllIncludes = [filename:dirname(filename:dirname(File)) | Includes],
Is = [{i, Dir} || Dir <- AllIncludes],
CompOpts = dialyzer_utils:src_compiler_opts() ++ Is ++ Ds,
case dialyzer_utils:get_abstract_code_from_src(File, CompOpts) of
{ok, AbstractCode} ->
case dialyzer_utils:get_record_and_type_info(AbstractCode) of
{ok, RecDict} ->
Mod = list_to_atom(filename:basename(File, ".erl")),
case dialyzer_utils:get_spec_info(Mod, AbstractCode, RecDict) of
{ok, SpecDict, CbDict} ->
CS1 = dialyzer_codeserver:store_temp_records(Mod, RecDict, CS),
dialyzer_codeserver:store_temp_contracts(Mod, SpecDict, CbDict, CS1);
{error, Reason} -> compile_error([Reason])
end;
{error, Reason} -> compile_error([Reason])
end;
{error, Reason} -> compile_error(Reason)
end
end,
CodeServer1 = lists:foldl(Fun, CodeServer, TrustedFiles),
%% Process remote types
NewCodeServer =
try
NewRecords = dialyzer_codeserver:get_temp_records(CodeServer1),
OldRecords = dialyzer_plt:get_types(TrustPLT), % XXX change to the PLT?
MergedRecords = dialyzer_utils:merge_records(NewRecords, OldRecords),
CodeServer2 = dialyzer_codeserver:set_temp_records(MergedRecords, CodeServer1),
CodeServer3 = dialyzer_utils:process_record_remote_types(CodeServer2),
dialyzer_contracts:process_contract_remote_types(CodeServer3)
catch
throw:{error, ErrorMsg} ->
compile_error(ErrorMsg)
end,
%% Create TrustPLT
Contracts = dialyzer_codeserver:get_contracts(NewCodeServer),
Modules = dict:fetch_keys(Contracts),
FoldFun =
fun(Module, TmpPlt) ->
{ok, ModuleContracts} = dict:find(Module, Contracts),
SpecList = [{MFA, Contract}
|| {MFA, {_FileLine, Contract}} <- dict:to_list(ModuleContracts)],
dialyzer_plt:insert_contract_list(TmpPlt, SpecList)
end,
NewTrustPLT = lists:foldl(FoldFun, TrustPLT, Modules),
Analysis#analysis{trust_plt = NewTrustPLT}.
%%--------------------------------------------------------------------
-spec get_type_info(analysis()) -> analysis().
get_type_info(#analysis{callgraph = CallGraph,
trust_plt = TrustPLT,
codeserver = CodeServer} = Analysis) ->
StrippedCallGraph = remove_external(CallGraph, TrustPLT),
%% io:format("--- Analyzing callgraph... "),
try
NewPlt = dialyzer_succ_typings:analyze_callgraph(StrippedCallGraph,
TrustPLT, CodeServer),
Analysis#analysis{callgraph = StrippedCallGraph, trust_plt = NewPlt}
catch
error:What ->
fatal_error(io_lib:format("Analysis failed with message: ~p",
[{What, erlang:get_stacktrace()}]));
throw:{dialyzer_succ_typing_error, Msg} ->
fatal_error(io_lib:format("Analysis failed with message: ~s", [Msg]))
end.
-spec remove_external(callgraph(), plt()) -> callgraph().
remove_external(CallGraph, PLT) ->
{StrippedCG0, Ext} = dialyzer_callgraph:remove_external(CallGraph),
StrippedCG = dialyzer_callgraph:finalize(StrippedCG0),
case get_external(Ext, PLT) of
[] -> ok;
Externals ->
msg(io_lib:format(" Unknown functions: ~p\n", [lists:usort(Externals)])),
ExtTypes = rcv_ext_types(),
case ExtTypes of
[] -> ok;
_ -> msg(io_lib:format(" Unknown types: ~p\n", [ExtTypes]))
end
end,
StrippedCG.
-spec get_external([{mfa(), mfa()}], plt()) -> [mfa()].
get_external(Exts, Plt) ->
Fun = fun ({_From, To = {M, F, A}}, Acc) ->
case dialyzer_plt:contains_mfa(Plt, To) of
false ->
case erl_bif_types:is_known(M, F, A) of
true -> Acc;
false -> [To|Acc]
end;
true -> Acc
end
end,
lists:foldl(Fun, [], Exts).
%%--------------------------------------------------------------------
%% Showing type information or annotating files with such information.
%%--------------------------------------------------------------------
-define(TYPER_ANN_DIR, "typer_ann").
-type line() :: non_neg_integer().
-type fa() :: {atom(), arity()}.
-type func_info() :: {line(), atom(), arity()}.
-record(info, {records = map__new() :: map(),
functions = [] :: [func_info()],
types = map__new() :: map(),
edoc = false :: boolean()}).
-record(inc, {map = map__new() :: map(), filter = [] :: files()}).
-type inc() :: #inc{}.
-spec show_or_annotate(analysis()) -> 'ok'.
show_or_annotate(#analysis{mode = Mode, fms = Files} = Analysis) ->
case Mode of
?SHOW -> show(Analysis);
?SHOW_EXPORTED -> show(Analysis);
?ANNOTATE ->
Fun = fun ({File, Module}) ->
Info = get_final_info(File, Module, Analysis),
write_typed_file(File, Info)
end,
lists:foreach(Fun, Files);
?ANNOTATE_INC_FILES ->
IncInfo = write_and_collect_inc_info(Analysis),
write_inc_files(IncInfo)
end.
write_and_collect_inc_info(Analysis) ->
Fun = fun ({File, Module}, Inc) ->
Info = get_final_info(File, Module, Analysis),
write_typed_file(File, Info),
IncFuns = get_functions(File, Analysis),
collect_imported_functions(IncFuns, Info#info.types, Inc)
end,
NewInc = lists:foldl(Fun, #inc{}, Analysis#analysis.fms),
clean_inc(NewInc).
write_inc_files(Inc) ->
Fun =
fun (File) ->
Val = map__lookup(File, Inc#inc.map),
%% Val is function with its type info
%% in form [{{Line,F,A},Type}]
Functions = [Key || {Key, _} <- Val],
Val1 = [{{F,A},Type} || {{_Line,F,A},Type} <- Val],
Info = #info{types = map__from_list(Val1),
records = map__new(),
%% Note we need to sort functions here!
functions = lists:keysort(1, Functions)},
%% io:format("Types ~p\n", [Info#info.types]),
%% io:format("Functions ~p\n", [Info#info.functions]),
%% io:format("Records ~p\n", [Info#info.records]),
write_typed_file(File, Info)
end,
lists:foreach(Fun, dict:fetch_keys(Inc#inc.map)).
show(Analysis) ->
Fun = fun ({File, Module}) ->
Info = get_final_info(File, Module, Analysis),
show_type_info(File, Info)
end,
lists:foreach(Fun, Analysis#analysis.fms).
no_show(_,[])->[];
no_show(Analysis,[{File, Module}|Files])->
Info = get_final_info(File, Module, Analysis),
[no_show_type_info(Info)|no_show(Analysis,Files)].
get_final_info(File, Module, Analysis) ->
Records = get_records(File, Analysis),
Types = get_types(Module, Analysis, Records),
Functions = get_functions(File, Analysis),
Edoc = Analysis#analysis.edoc,
#info{records = Records, functions = Functions, types = Types, edoc = Edoc}.
collect_imported_functions(Functions, Types, Inc) ->
%% Coming from other sourses, including:
%% FIXME: How to deal with yecc-generated file????
%% --.yrl (yecc-generated file)???
%% -- yeccpre.hrl (yecc-generated file)???
%% -- other cases
Fun = fun ({File, _} = Obj, I) ->
case is_yecc_gen(File, I) of
{true, NewI} -> NewI;
{false, NewI} ->
check_imported_functions(Obj, NewI, Types)
end
end,
lists:foldl(Fun, Inc, Functions).
-spec is_yecc_gen(file:filename(), inc()) -> {boolean(), inc()}.
is_yecc_gen(File, #inc{filter = Fs} = Inc) ->
case lists:member(File, Fs) of
true -> {true, Inc};
false ->
case filename:extension(File) of
".yrl" ->
Rootname = filename:rootname(File, ".yrl"),
Obj = Rootname ++ ".erl",
case lists:member(Obj, Fs) of
true -> {true, Inc};
false ->
NewInc = Inc#inc{filter = [Obj|Fs]},
{true, NewInc}
end;
_ ->
case filename:basename(File) of
"yeccpre.hrl" -> {true, Inc};
_ -> {false, Inc}
end
end
end.
check_imported_functions({File, {Line, F, A}}, Inc, Types) ->
IncMap = Inc#inc.map,
FA = {F, A},
Type = get_type_info(FA, Types),
case map__lookup(File, IncMap) of
none -> %% File is not added. Add it
Obj = {File,[{FA, {Line, Type}}]},
NewMap = map__insert(Obj, IncMap),
Inc#inc{map = NewMap};
Val -> %% File is already in. Check.
case lists:keyfind(FA, 1, Val) of
false ->
%% Function is not in; add it
Obj = {File, Val ++ [{FA, {Line, Type}}]},
NewMap = map__insert(Obj, IncMap),
Inc#inc{map = NewMap};
Type ->
%% Function is in and with same type
Inc;
_ ->
%% Function is in but with diff type
inc_warning(FA, File),
Elem = lists:keydelete(FA, 1, Val),
NewMap = case Elem of
[] -> map__remove(File, IncMap);
_ -> map__insert({File, Elem}, IncMap)
end,
Inc#inc{map = NewMap}
end
end.
inc_warning({F, A}, File) ->
io:format(" ***Warning: Skip function ~p/~p ", [F, A]),
io:format("in file ~p because of inconsistent type\n", [File]).
clean_inc(Inc) ->
Inc1 = remove_yecc_generated_file(Inc),
normalize_obj(Inc1).
remove_yecc_generated_file(#inc{filter = Filter} = Inc) ->
Fun = fun (Key, #inc{map = Map} = I) ->
I#inc{map = map__remove(Key, Map)}
end,
lists:foldl(Fun, Inc, Filter).
normalize_obj(TmpInc) ->
Fun = fun (Key, Val, Inc) ->
NewVal = [{{Line,F,A},Type} || {{F,A},{Line,Type}} <- Val],
map__insert({Key, NewVal}, Inc)
end,
TmpInc#inc{map = map__fold(Fun, map__new(), TmpInc#inc.map)}.
get_records(File, Analysis) ->
map__lookup(File, Analysis#analysis.record).
get_types(Module, Analysis, Records) ->
TypeInfoPlt = Analysis#analysis.trust_plt,
TypeInfo =
case dialyzer_plt:lookup_module(TypeInfoPlt, Module) of
none -> [];
{value, List} -> List
end,
CodeServer = Analysis#analysis.codeserver,
TypeInfoList =
case Analysis#analysis.show_succ of
true ->
[convert_type_info(I) || I <- TypeInfo];
false ->
[get_type(I, CodeServer, Records) || I <- TypeInfo]
end,
map__from_list(TypeInfoList).
convert_type_info({{_M, F, A}, Range, Arg}) ->
{{F, A}, {Range, Arg}}.
get_type({{M, F, A} = MFA, Range, Arg}, CodeServer, Records) ->
case dialyzer_codeserver:lookup_mfa_contract(MFA, CodeServer) of
error ->
{{F, A}, {Range, Arg}};
{ok, {_FileLine, Contract}} ->
Sig = erl_types:t_fun(Arg, Range),
case dialyzer_contracts:check_contract(Contract, Sig) of
ok -> {{F, A}, {contract, Contract}};
{error, {extra_range, _, _}} ->
{{F, A}, {contract, Contract}};
{error, {overlapping_contract, []}} ->
{{F, A}, {contract, Contract}};
{error, invalid_contract} ->
CString = dialyzer_contracts:contract_to_string(Contract),
SigString = dialyzer_utils:format_sig(Sig, Records),
Msg = io_lib:format("Error in contract of function ~w:~w/~w\n"
"\t The contract is: " ++ CString ++ "\n" ++
"\t but the inferred signature is: ~s",
[M, F, A, SigString]),
fatal_error(Msg);
{error, ErrorStr} when is_list(ErrorStr) -> % ErrorStr is a string()
Msg = io_lib:format("Error in contract of function ~w:~w/~w: ~s",
[M, F, A, ErrorStr]),
fatal_error(Msg)
end
end.
get_functions(File, Analysis) ->
case Analysis#analysis.mode of
?SHOW ->
Funcs = map__lookup(File, Analysis#analysis.func),
Inc_Funcs = map__lookup(File, Analysis#analysis.inc_func),
remove_module_info(Funcs) ++ normalize_incFuncs(Inc_Funcs);
?SHOW_EXPORTED ->
Ex_Funcs = map__lookup(File, Analysis#analysis.ex_func),
remove_module_info(Ex_Funcs);
?ANNOTATE ->
Funcs = map__lookup(File, Analysis#analysis.func),
remove_module_info(Funcs);
?ANNOTATE_INC_FILES ->
map__lookup(File, Analysis#analysis.inc_func)
end.
normalize_incFuncs(Functions) ->
[FunInfo || {_FileName, FunInfo} <- Functions].
-spec remove_module_info([func_info()]) -> [func_info()].
remove_module_info(FunInfoList) ->
F = fun ({_,module_info,0}) -> false;
({_,module_info,1}) -> false;
({Line,F,A}) when is_integer(Line), is_atom(F), is_integer(A) -> true
end,
lists:filter(F, FunInfoList).
write_typed_file(File, Info) ->
io:format(" Processing file: ~p\n", [File]),
Dir = filename:dirname(File),
RootName = filename:basename(filename:rootname(File)),
Ext = filename:extension(File),
TyperAnnDir = filename:join(Dir, ?TYPER_ANN_DIR),
TmpNewFilename = lists:concat([RootName, ".ann", Ext]),
NewFileName = filename:join(TyperAnnDir, TmpNewFilename),
case file:make_dir(TyperAnnDir) of
{error, Reason} ->
case Reason of
eexist -> %% TypEr dir exists; remove old typer files if they exist
case file:delete(NewFileName) of
ok -> ok;
{error, enoent} -> ok;
{error, _} ->
Msg = io_lib:format("Error in deleting file ~s\n", [NewFileName]),
fatal_error(Msg)
end,
write_typed_file(File, Info, NewFileName);
enospc ->
Msg = io_lib:format("Not enough space in ~p\n", [Dir]),
fatal_error(Msg);
eacces ->
Msg = io_lib:format("No write permission in ~p\n", [Dir]),
fatal_error(Msg);
_ ->
Msg = io_lib:format("Unhandled error ~s when writing ~p\n",
[Reason, Dir]),
fatal_error(Msg)
end;
ok -> %% Typer dir does NOT exist
write_typed_file(File, Info, NewFileName)
end.
write_typed_file(File, Info, NewFileName) ->
{ok, Binary} = file:read_file(File),
Chars = binary_to_list(Binary),
write_typed_file(Chars, NewFileName, Info, 1, []),
io:format(" Saved as: ~p\n", [NewFileName]).
write_typed_file(Chars, File, #info{functions = []}, _LNo, _Acc) ->
ok = file:write_file(File, list_to_binary(Chars), [append]);
write_typed_file([Ch|Chs] = Chars, File, Info, LineNo, Acc) ->
[{Line,F,A}|RestFuncs] = Info#info.functions,
case Line of
1 -> %% This will happen only for inc files
ok = raw_write(F, A, Info, File, []),
NewInfo = Info#info{functions = RestFuncs},
NewAcc = [],
write_typed_file(Chars, File, NewInfo, Line, NewAcc);
_ ->
case Ch of
10 ->
NewLineNo = LineNo + 1,
{NewInfo, NewAcc} =
case NewLineNo of
Line ->
ok = raw_write(F, A, Info, File, [Ch|Acc]),
{Info#info{functions = RestFuncs}, []};
_ ->
{Info, [Ch|Acc]}
end,
write_typed_file(Chs, File, NewInfo, NewLineNo, NewAcc);
_ ->
write_typed_file(Chs, File, Info, LineNo, [Ch|Acc])
end
end.
raw_write(F, A, Info, File, Content) ->
TypeInfo = get_type_string(F, A, Info, file),
ContentList = lists:reverse(Content) ++ TypeInfo ++ "\n",
ContentBin = list_to_binary(ContentList),
file:write_file(File, ContentBin, [append]).
get_type_string(F, A, Info, Mode) ->
Type = get_type_info({F,A}, Info#info.types),
TypeStr =
case Type of
{contract, C} ->
dialyzer_contracts:contract_to_string(C);
{RetType, ArgType} ->
Sig = erl_types:t_fun(ArgType, RetType),
dialyzer_utils:format_sig(Sig, Info#info.records)
end,
case Info#info.edoc of
false ->
case {Mode, Type} of
{file, {contract, _}} -> "";
_ ->
Prefix = lists:concat(["-spec ", erl_types:atom_to_string(F)]),
lists:concat([Prefix, TypeStr, "."])
end;
true ->
Prefix = lists:concat(["%% @spec ", F]),
lists:concat([Prefix, TypeStr, "."])
end.
show_type_info(File, Info) ->
io:format("\n%% File: ~p\n%% ", [File]),
OutputString = lists:concat(["~.", length(File)+8, "c~n"]),
io:fwrite(OutputString, [$-]),
Fun = fun ({_LineNo, F, A}) ->
TypeInfo = get_type_string(F, A, Info, show),
io:format("~s\n", [TypeInfo])
end,
lists:foreach(Fun, Info#info.functions).
no_show_type_info(Info) ->
no_show_type_info(Info#info.functions,Info).
no_show_type_info([],_)->[];
no_show_type_info([{_LineNo, F, A}|Funs],Info)->
%[get_type_string(F, A, Info, show)|no_show_type_info(Funs,Info)].
[{F,A,get_type_info({F,A}, Info#info.types),get_type_string(F, A, Info, show)}|no_show_type_info(Funs,Info)].
get_type_info(Func, Types) ->
case map__lookup(Func, Types) of
none ->
%% Note: Typeinfo of any function should exist in
%% the result offered by dialyzer, otherwise there
%% *must* be something wrong with the analysis
Msg = io_lib:format("No type info for function: ~p\n", [Func]),
fatal_error(Msg);
{contract, _Fun} = C -> C;
{_RetType, _ArgType} = RA -> RA
end.
%%--------------------------------------------------------------------
%% Processing of command-line options and arguments.
%%--------------------------------------------------------------------
-spec process_cl_args() -> {args(), analysis()}.
process_cl_args() ->
ArgList = init:get_plain_arguments(),
%% io:format("Args is ~p\n", [ArgList]),
{Args, Analysis} = analyze_args(ArgList, #args{}, #analysis{}),
%% if the mode has not been set, set it to the default mode (show)
{Args, case Analysis#analysis.mode of
undefined -> Analysis#analysis{mode = ?SHOW};
Mode when is_atom(Mode) -> Analysis
end}.
analyze_args([], Args, Analysis) ->
{Args, Analysis};
analyze_args(ArgList, Args, Analysis) ->
{Result, Rest} = cl(ArgList),
{NewArgs, NewAnalysis} = analyze_result(Result, Args, Analysis),
analyze_args(Rest, NewArgs, NewAnalysis).
cl(["-h"|_]) -> help_message();
cl(["--help"|_]) -> help_message();
cl(["-v"|_]) -> version_message();
cl(["--version"|_]) -> version_message();
cl(["--edoc"|Opts]) -> {edoc, Opts};
cl(["--show"|Opts]) -> {{mode, ?SHOW}, Opts};
cl(["--show_exported"|Opts]) -> {{mode, ?SHOW_EXPORTED}, Opts};
cl(["--show-exported"|Opts]) -> {{mode, ?SHOW_EXPORTED}, Opts};
cl(["--show_success_typings"|Opts]) -> {show_succ, Opts};
cl(["--show-success-typings"|Opts]) -> {show_succ, Opts};
cl(["--annotate"|Opts]) -> {{mode, ?ANNOTATE}, Opts};
cl(["--annotate-inc-files"|Opts]) -> {{mode, ?ANNOTATE_INC_FILES}, Opts};
cl(["--no_spec"|Opts]) -> {no_spec, Opts};
cl(["--plt",Plt|Opts]) -> {{plt, Plt}, Opts};
cl(["-D"++Def|Opts]) ->
case Def of
"" -> fatal_error("no variable name specified after -D");
_ ->
DefPair = process_def_list(re:split(Def, "=", [{return, list}])),
{{def, DefPair}, Opts}
end;
cl(["-I",Dir|Opts]) -> {{inc, Dir}, Opts};
cl(["-I"++Dir|Opts]) ->
case Dir of
"" -> fatal_error("no include directory specified after -I");
_ -> {{inc, Dir}, Opts}
end;
cl(["-T"|Opts]) ->
{Files, RestOpts} = dialyzer_cl_parse:collect_args(Opts),
case Files of
[] -> fatal_error("no file or directory specified after -T");
[_|_] -> {{trusted, Files}, RestOpts}
end;
cl(["-r"|Opts]) ->
{Files, RestOpts} = dialyzer_cl_parse:collect_args(Opts),
{{files_r, Files}, RestOpts};
cl(["-pa",Dir|Opts]) -> {{pa,Dir}, Opts};
cl(["-pz",Dir|Opts]) -> {{pz,Dir}, Opts};
cl(["-"++H|_]) -> fatal_error("unknown option -"++H);
cl(Opts) ->
{Files, RestOpts} = dialyzer_cl_parse:collect_args(Opts),
{{files, Files}, RestOpts}.
process_def_list(L) ->
case L of
[Name, Value] ->
{ok, Tokens, _} = erl_scan:string(Value ++ "."),
{ok, ErlValue} = erl_parse:parse_term(Tokens),
{list_to_atom(Name), ErlValue};
[Name] ->
{list_to_atom(Name), true}
end.
%% Get information about files that the user trusts and wants to analyze
analyze_result({files, Val}, Args, Analysis) ->
NewVal = Args#args.files ++ Val,
{Args#args{files = NewVal}, Analysis};
analyze_result({files_r, Val}, Args, Analysis) ->
NewVal = Args#args.files_r ++ Val,
{Args#args{files_r = NewVal}, Analysis};
analyze_result({trusted, Val}, Args, Analysis) ->
NewVal = Args#args.trusted ++ Val,
{Args#args{trusted = NewVal}, Analysis};
analyze_result(edoc, Args, Analysis) ->
{Args, Analysis#analysis{edoc = true}};
%% Get useful information for actual analysis
analyze_result({mode, Mode}, Args, Analysis) ->
case Analysis#analysis.mode of
undefined -> {Args, Analysis#analysis{mode = Mode}};
OldMode -> mode_error(OldMode, Mode)
end;
analyze_result({def, Val}, Args, Analysis) ->
NewVal = Analysis#analysis.macros ++ [Val],
{Args, Analysis#analysis{macros = NewVal}};
analyze_result({inc, Val}, Args, Analysis) ->
NewVal = Analysis#analysis.includes ++ [Val],
{Args, Analysis#analysis{includes = NewVal}};
analyze_result({plt, Plt}, Args, Analysis) ->
{Args, Analysis#analysis{plt = Plt}};
analyze_result(show_succ, Args, Analysis) ->
{Args, Analysis#analysis{show_succ = true}};
analyze_result(no_spec, Args, Analysis) ->
{Args, Analysis#analysis{no_spec = true}};
analyze_result({pa, Dir}, Args, Analysis) ->
true = code:add_patha(Dir),
{Args, Analysis};
analyze_result({pz, Dir}, Args, Analysis) ->
true = code:add_pathz(Dir),
{Args, Analysis}.
%%--------------------------------------------------------------------
%% File processing.
%%--------------------------------------------------------------------
-spec get_all_files(args()) -> [file:filename(),...].
get_all_files(#args{files = Fs, files_r = Ds}) ->
case filter_fd(Fs, Ds, fun test_erl_file_exclude_ann/1) of
[] -> fatal_error("no file(s) to analyze");
AllFiles -> AllFiles
end.
-spec test_erl_file_exclude_ann(file:filename()) -> boolean().
test_erl_file_exclude_ann(File) ->
case is_erl_file(File) of
true -> %% Exclude files ending with ".ann.erl"
case re:run(File, "[\.]ann[\.]erl$") of
{match, _} -> false;
nomatch -> true
end;
false -> false
end.
-spec is_erl_file(file:filename()) -> boolean().
is_erl_file(File) ->
filename:extension(File) =:= ".erl".
-type test_file_fun() :: fun((file:filename()) -> boolean()).
-spec filter_fd(files(), files(), test_file_fun()) -> files().
filter_fd(File_Dir, Dir_R, Fun) ->
All_File_1 = process_file_and_dir(File_Dir, Fun),
All_File_2 = process_dir_rec(Dir_R, Fun),
remove_dup(All_File_1 ++ All_File_2).
-spec process_file_and_dir(files(), test_file_fun()) -> files().
process_file_and_dir(File_Dir, TestFun) ->
Fun =
fun (Elem, Acc) ->
case filelib:is_regular(Elem) of
true -> process_file(Elem, TestFun, Acc);
false -> check_dir(Elem, false, Acc, TestFun)
end
end,
lists:foldl(Fun, [], File_Dir).
-spec process_dir_rec(files(), test_file_fun()) -> files().
process_dir_rec(Dirs, TestFun) ->
Fun = fun (Dir, Acc) -> check_dir(Dir, true, Acc, TestFun) end,
lists:foldl(Fun, [], Dirs).
-spec check_dir(file:filename(), boolean(), files(), test_file_fun()) -> files().
check_dir(Dir, Recursive, Acc, Fun) ->
case file:list_dir(Dir) of
{ok, Files} ->
{TmpDirs, TmpFiles} = split_dirs_and_files(Files, Dir),
case Recursive of
false ->
FinalFiles = process_file_and_dir(TmpFiles, Fun),
Acc ++ FinalFiles;
true ->
TmpAcc1 = process_file_and_dir(TmpFiles, Fun),
TmpAcc2 = process_dir_rec(TmpDirs, Fun),
Acc ++ TmpAcc1 ++ TmpAcc2
end;
{error, eacces} ->
fatal_error("no access permission to dir \""++Dir++"\"");
{error, enoent} ->
fatal_error("cannot access "++Dir++": No such file or directory");
{error, _Reason} ->
fatal_error("error involving a use of file:list_dir/1")
end.
%% Same order as the input list
-spec process_file(file:filename(), test_file_fun(), files()) -> files().
process_file(File, TestFun, Acc) ->
case TestFun(File) of
true -> Acc ++ [File];
false -> Acc
end.
%% Same order as the input list
-spec split_dirs_and_files(files(), file:filename()) -> {files(), files()}.
split_dirs_and_files(Elems, Dir) ->
Test_Fun =
fun (Elem, {DirAcc, FileAcc}) ->
File = filename:join(Dir, Elem),
case filelib:is_regular(File) of
false -> {[File|DirAcc], FileAcc};
true -> {DirAcc, [File|FileAcc]}
end
end,
{Dirs, Files} = lists:foldl(Test_Fun, {[], []}, Elems),
{lists:reverse(Dirs), lists:reverse(Files)}.
%% Removes duplicate filenames but keeps the order of the input list
-spec remove_dup(files()) -> files().
remove_dup(Files) ->
Test_Dup = fun (File, Acc) ->
case lists:member(File, Acc) of
true -> Acc;
false -> [File|Acc]
end
end,
Reversed_Elems = lists:foldl(Test_Dup, [], Files),
lists:reverse(Reversed_Elems).
%%--------------------------------------------------------------------
%% Collect information.
%%--------------------------------------------------------------------
-type inc_file_info() :: {file:filename(), func_info()}.
-record(tmpAcc, {file :: file:filename(),
module :: atom(),
funcAcc = [] :: [func_info()],
incFuncAcc = [] :: [inc_file_info()],
dialyzerObj = [] :: [{mfa(), {_, _}}]}).
-spec collect_info(analysis()) -> analysis().
collect_info(Analysis) ->
NewPlt =
try get_dialyzer_plt(Analysis) of
DialyzerPlt ->
dialyzer_plt:merge_plts([Analysis#analysis.trust_plt, DialyzerPlt])
catch
throw:{dialyzer_error,_Reason} ->
fatal_error("Dialyzer's PLT is missing or is not up-to-date; please (re)create it")
end,
NewAnalysis = lists:foldl(fun collect_one_file_info/2,
Analysis#analysis{trust_plt = NewPlt},
Analysis#analysis.files),
%% Process Remote Types
TmpCServer = NewAnalysis#analysis.codeserver,
NewCServer =
try
NewRecords = dialyzer_codeserver:get_temp_records(TmpCServer),
NewExpTypes = dialyzer_codeserver:get_temp_exported_types(TmpCServer),
OldRecords = dialyzer_plt:get_types(NewPlt),
OldExpTypes = dialyzer_plt:get_exported_types(NewPlt),
MergedRecords = dialyzer_utils:merge_records(NewRecords, OldRecords),
MergedExpTypes = sets:union(NewExpTypes, OldExpTypes),
%% io:format("Merged Records ~p",[MergedRecords]),
TmpCServer1 = dialyzer_codeserver:set_temp_records(MergedRecords, TmpCServer),
TmpCServer2 =
dialyzer_codeserver:insert_temp_exported_types(MergedExpTypes,
TmpCServer1),
TmpCServer3 = dialyzer_utils:process_record_remote_types(TmpCServer2),
dialyzer_contracts:process_contract_remote_types(TmpCServer3)
catch
throw:{error, ErrorMsg} ->
fatal_error(ErrorMsg)
end,
NewAnalysis#analysis{codeserver = NewCServer}.
collect_one_file_info(File, Analysis) ->
Ds = [{d,Name,Val} || {Name,Val} <- Analysis#analysis.macros],
%% Current directory should also be included in "Includes".
Includes = [filename:dirname(File)|Analysis#analysis.includes],
Is = [{i,Dir} || Dir <- Includes],
Options = dialyzer_utils:src_compiler_opts() ++ Is ++ Ds,
case dialyzer_utils:get_abstract_code_from_src(File, Options) of
{error, Reason} ->
%% io:format("File=~p\n,Options=~p\n,Error=~p\n", [File,Options,Reason]),
compile_error(Reason);
{ok, AbstractCode} ->
case dialyzer_utils:get_core_from_abstract_code(AbstractCode, Options) of
error -> compile_error(["Could not get core erlang for "++File]);
{ok, Core} ->
case dialyzer_utils:get_record_and_type_info(AbstractCode) of
{error, Reason} -> compile_error([Reason]);
{ok, Records} ->
Mod = cerl:concrete(cerl:module_name(Core)),
case dialyzer_utils:get_spec_info(Mod, AbstractCode, Records) of
{error, Reason} -> compile_error([Reason]);
{ok, SpecInfo, CbInfo} ->
ExpTypes = get_exported_types_from_core(Core),
analyze_core_tree(Core, Records, SpecInfo, CbInfo,
ExpTypes, Analysis, File)
end
end
end
end.
analyze_core_tree(Core, Records, SpecInfo, CbInfo, ExpTypes, Analysis, File) ->
Module = cerl:concrete(cerl:module_name(Core)),
TmpTree = cerl:from_records(Core),
CS1 = Analysis#analysis.codeserver,
NextLabel = dialyzer_codeserver:get_next_core_label(CS1),
{Tree, NewLabel} = cerl_trees:label(TmpTree, NextLabel),
CS2 = dialyzer_codeserver:insert(Module, Tree, CS1),
CS3 = dialyzer_codeserver:set_next_core_label(NewLabel, CS2),
CS4 = dialyzer_codeserver:store_temp_records(Module, Records, CS3),
CS5 =
case Analysis#analysis.no_spec of
true -> CS4;
false ->
dialyzer_codeserver:store_temp_contracts(Module, SpecInfo, CbInfo, CS4)
end,
OldExpTypes = dialyzer_codeserver:get_temp_exported_types(CS5),
MergedExpTypes = sets:union(ExpTypes, OldExpTypes),
CS6 = dialyzer_codeserver:insert_temp_exported_types(MergedExpTypes, CS5),
Ex_Funcs = [{0,F,A} || {_,_,{F,A}} <- cerl:module_exports(Tree)],
TmpCG = Analysis#analysis.callgraph,
CG = dialyzer_callgraph:scan_core_tree(Tree, TmpCG),
Fun = fun analyze_one_function/2,
All_Defs = cerl:module_defs(Tree),
Acc = lists:foldl(Fun, #tmpAcc{file = File, module = Module}, All_Defs),
Exported_FuncMap = map__insert({File, Ex_Funcs}, Analysis#analysis.ex_func),
%% we must sort all functions in the file which
%% originate from this file by *numerical order* of lineNo
Sorted_Functions = lists:keysort(1, Acc#tmpAcc.funcAcc),
FuncMap = map__insert({File, Sorted_Functions}, Analysis#analysis.func),
%% we do not need to sort functions which are imported from included files
IncFuncMap = map__insert({File, Acc#tmpAcc.incFuncAcc},
Analysis#analysis.inc_func),
FMs = Analysis#analysis.fms ++ [{File, Module}],
RecordMap = map__insert({File, Records}, Analysis#analysis.record),
Analysis#analysis{fms = FMs,
callgraph = CG,
codeserver = CS6,
ex_func = Exported_FuncMap,
inc_func = IncFuncMap,
record = RecordMap,
func = FuncMap}.
analyze_one_function({Var, FunBody} = Function, Acc) ->
F = cerl:fname_id(Var),
A = cerl:fname_arity(Var),
TmpDialyzerObj = {{Acc#tmpAcc.module, F, A}, Function},
NewDialyzerObj = Acc#tmpAcc.dialyzerObj ++ [TmpDialyzerObj],
[_, LineNo, {file, FileName}] = cerl:get_ann(FunBody),
BaseName = filename:basename(FileName),
FuncInfo = {LineNo, F, A},
OriginalName = Acc#tmpAcc.file,
{FuncAcc, IncFuncAcc} =
case (FileName =:= OriginalName) orelse (BaseName =:= OriginalName) of
true -> %% Coming from original file
%% io:format("Added function ~p\n", [{LineNo, F, A}]),
{Acc#tmpAcc.funcAcc ++ [FuncInfo], Acc#tmpAcc.incFuncAcc};
false ->
%% Coming from other sourses, including:
%% -- .yrl (yecc-generated file)
%% -- yeccpre.hrl (yecc-generated file)
%% -- other cases
{Acc#tmpAcc.funcAcc, Acc#tmpAcc.incFuncAcc ++ [{FileName, FuncInfo}]}
end,
Acc#tmpAcc{funcAcc = FuncAcc,
incFuncAcc = IncFuncAcc,
dialyzerObj = NewDialyzerObj}.
-spec get_dialyzer_plt(analysis()) -> plt().
get_dialyzer_plt(#analysis{plt = PltFile0}) ->
PltFile =
case PltFile0 =:= none of
true -> dialyzer_plt:get_default_plt();