diff options
Diffstat (limited to 'lib/dialyzer/src')
| -rw-r--r-- | lib/dialyzer/src/dialyzer_analysis_callgraph.erl | 66 | ||||
| -rw-r--r-- | lib/dialyzer/src/dialyzer_behaviours.erl | 12 | ||||
| -rw-r--r-- | lib/dialyzer/src/dialyzer_callgraph.erl | 44 | ||||
| -rw-r--r-- | lib/dialyzer/src/dialyzer_codeserver.erl | 17 | ||||
| -rw-r--r-- | lib/dialyzer/src/dialyzer_dataflow.erl | 66 | ||||
| -rw-r--r-- | lib/dialyzer/src/dialyzer_gui.erl | 27 | ||||
| -rw-r--r-- | lib/dialyzer/src/dialyzer_gui_wx.erl | 10 | ||||
| -rw-r--r-- | lib/dialyzer/src/dialyzer_plt.erl | 37 | ||||
| -rw-r--r-- | lib/dialyzer/src/dialyzer_races.erl | 21 | ||||
| -rw-r--r-- | lib/dialyzer/src/dialyzer_succ_typings.erl | 34 | ||||
| -rw-r--r-- | lib/dialyzer/src/dialyzer_typesig.erl | 153 |
11 files changed, 263 insertions, 224 deletions
diff --git a/lib/dialyzer/src/dialyzer_analysis_callgraph.erl b/lib/dialyzer/src/dialyzer_analysis_callgraph.erl index b42f5e8191..5be870d78f 100644 --- a/lib/dialyzer/src/dialyzer_analysis_callgraph.erl +++ b/lib/dialyzer/src/dialyzer_analysis_callgraph.erl @@ -170,33 +170,32 @@ analysis_start(Parent, Analysis) -> rcv_and_send_ext_types(Parent), NonExports = sets:subtract(sets:from_list(AllNodes), Exports), NonExportsList = sets:to_list(NonExports), - Plt3 = dialyzer_plt:delete_list(State3#analysis_state.plt, NonExportsList), - Plt4 = dialyzer_plt:delete_contract_list(Plt3, NonExportsList), + Plt2 = dialyzer_plt:delete_list(State3#analysis_state.plt, NonExportsList), send_codeserver_plt(Parent, CServer, State3#analysis_state.plt), - send_analysis_done(Parent, Plt4, State3#analysis_state.doc_plt). + send_analysis_done(Parent, Plt2, State3#analysis_state.doc_plt). analyze_callgraph(Callgraph, State) -> Codeserver = State#analysis_state.codeserver, - Plt = dialyzer_plt:insert_callbacks(State#analysis_state.plt, Codeserver), Parent = State#analysis_state.parent, - case State#analysis_state.analysis_type of - plt_build -> - Callgraph1 = dialyzer_callgraph:finalize(Callgraph), - NewPlt = dialyzer_succ_typings:analyze_callgraph(Callgraph1, Plt, - Codeserver, Parent), - dialyzer_callgraph:delete(Callgraph1), - State#analysis_state{plt = NewPlt}; - succ_typings -> - NoWarn = State#analysis_state.no_warn_unused, - DocPlt = State#analysis_state.doc_plt, - Callgraph1 = dialyzer_callgraph:finalize(Callgraph), - {Warnings, NewPlt, NewDocPlt} = - dialyzer_succ_typings:get_warnings(Callgraph1, Plt, DocPlt, - Codeserver, NoWarn, Parent), - dialyzer_callgraph:delete(Callgraph1), - send_warnings(State#analysis_state.parent, Warnings), - State#analysis_state{plt = NewPlt, doc_plt = NewDocPlt} - end. + DocPlt = State#analysis_state.doc_plt, + Plt = dialyzer_plt:insert_callbacks(State#analysis_state.plt, Codeserver), + Callgraph1 = dialyzer_callgraph:finalize(Callgraph), + {NewPlt, NewDocPlt} = + case State#analysis_state.analysis_type of + plt_build -> + {dialyzer_succ_typings:analyze_callgraph(Callgraph1, Plt, + Codeserver, Parent), + DocPlt}; + succ_typings -> + NoWarn = State#analysis_state.no_warn_unused, + {Warnings, NewPlt0, NewDocPlt0} = + dialyzer_succ_typings:get_warnings(Callgraph1, Plt, DocPlt, + Codeserver, NoWarn, Parent), + send_warnings(State#analysis_state.parent, Warnings), + {NewPlt0, NewDocPlt0} + end, + dialyzer_callgraph:delete(Callgraph1), + State#analysis_state{plt = NewPlt, doc_plt = NewDocPlt}. %%-------------------------------------------------------------------- %% Build the callgraph and fill the codeserver. @@ -282,10 +281,10 @@ cleanup_callgraph(#analysis_state{plt = InitPlt, parent = Parent, if ExtCalls1 =:= [] -> {[], []}; true -> ModuleSet = sets:from_list(Modules), - lists:partition(fun({_From, {M, _F, _A}}) -> - sets:is_element(M, ModuleSet) orelse - dialyzer_plt:contains_module(InitPlt, M) - end, ExtCalls1) + PltModuleSet = dialyzer_plt:all_modules(InitPlt), + AllModules = sets:union(ModuleSet, PltModuleSet), + Pred = fun({_From, {M, _F, _A}}) -> sets:is_element(M, AllModules) end, + lists:partition(Pred, ExtCalls1) end, NonLocalCalls = dialyzer_callgraph:non_local_calls(Callgraph1), BadCalls2 = [Call || Call = {_From, To} <- NonLocalCalls, @@ -359,8 +358,19 @@ store_core(Mod, Core, NoWarn, Callgraph, CServer) -> store_code_and_build_callgraph(Mod, LabeledCore, Callgraph, CServer3, NoWarn). abs_get_nowarn(Abs, M) -> - [{M, F, A} - || {attribute, _, compile, {nowarn_unused_function, {F, A}}} <- Abs]. + Opts = lists:flatten([C || {attribute, _, compile, C} <- Abs]), + Warn = erl_lint:bool_option(warn_unused_function, nowarn_unused_function, + true, Opts), + case Warn of + false -> + [{M, F, A} || {function, _, F, A, _} <- Abs]; % all functions + true -> + OnLoad = + lists:flatten([{M, F, A} || {attribute, _, on_load, {F, A}} <- Abs]), + OnLoad ++ [{M, F, A} || + {nowarn_unused_function, FAs} <- Opts, + {F, A} <- lists:flatten([FAs])] + end. get_exported_types_from_core(Core) -> Attrs = cerl:module_attrs(Core), diff --git a/lib/dialyzer/src/dialyzer_behaviours.erl b/lib/dialyzer/src/dialyzer_behaviours.erl index e89c08df7d..fdaa8b663c 100644 --- a/lib/dialyzer/src/dialyzer_behaviours.erl +++ b/lib/dialyzer/src/dialyzer_behaviours.erl @@ -72,9 +72,11 @@ check_callbacks(Module, Attrs, Plt, Codeserver) -> %%-------------------------------------------------------------------- get_behaviours(Attrs) -> - BehaviourListsAndLine = [{cerl:concrete(L2), hd(cerl:get_ann(L2))} || - {L1, L2} <- Attrs, cerl:is_literal(L1), - cerl:is_literal(L2), cerl:concrete(L1) =:= 'behaviour'], + BehaviourListsAndLine = + [{cerl:concrete(L2), hd(cerl:get_ann(L2))} || + {L1, L2} <- Attrs, cerl:is_literal(L1), + cerl:is_literal(L2), cerl:concrete(L1) =:= 'behaviour' orelse + cerl:concrete(L1) =:= 'behavior'], Behaviours = lists:append([Behs || {Behs,_} <- BehaviourListsAndLine]), BehLines = [{B,L} || {L1,L} <- BehaviourListsAndLine, B <- L1], {Behaviours, BehLines}. @@ -239,12 +241,12 @@ translatable_behaviours(Tree) -> get_behaviour_apis(Behaviours) -> get_behaviour_apis(Behaviours, []). --spec translate_behaviour_api_call(dialyzer_races:mfa_or_funlbl(), +-spec translate_behaviour_api_call(dialyzer_callgraph:mfa_or_funlbl(), [erl_types:erl_type()], [dialyzer_races:core_vars()], module(), behaviour_api_dict()) -> - {dialyzer_races:mfa_or_funlbl(), + {dialyzer_callgraph:mfa_or_funlbl(), [erl_types:erl_type()], [dialyzer_races:core_vars()]} | 'plain_call'. diff --git a/lib/dialyzer/src/dialyzer_callgraph.erl b/lib/dialyzer/src/dialyzer_callgraph.erl index d3de5aaf45..4767c02f77 100644 --- a/lib/dialyzer/src/dialyzer_callgraph.erl +++ b/lib/dialyzer/src/dialyzer_callgraph.erl @@ -59,7 +59,7 @@ put_named_tables/2, put_public_tables/2, put_behaviour_api_calls/2, get_behaviour_api_calls/1]). --export_type([callgraph/0]). +-export_type([callgraph/0, mfa_or_funlbl/0]). -include("dialyzer.hrl"). @@ -177,14 +177,14 @@ is_escaping(Label, #callgraph{esc = Esc}) when is_integer(Label) -> add_edges([], CG) -> CG; -add_edges(Edges, #callgraph{digraph = Callgraph} = CG) -> - CG#callgraph{digraph = digraph_add_edges(Edges, Callgraph)}. +add_edges(Edges, #callgraph{digraph = Digraph} = CG) -> + CG#callgraph{digraph = digraph_add_edges(Edges, Digraph)}. -spec add_edges([callgraph_edge()], [mfa_or_funlbl()], callgraph()) -> callgraph(). add_edges(Edges, MFAs, #callgraph{digraph = DG} = CG) -> - DG1 = digraph_confirm_vertices(MFAs, DG), - add_edges(Edges, CG#callgraph{digraph = DG1}). + DG = digraph_confirm_vertices(MFAs, DG), + add_edges(Edges, CG). -spec take_scc(callgraph()) -> 'none' | {'ok', scc(), callgraph()}. @@ -196,8 +196,8 @@ take_scc(#callgraph{postorder = []}) -> -spec remove_external(callgraph()) -> {callgraph(), [tuple()]}. remove_external(#callgraph{digraph = DG} = CG) -> - {NewDG, External} = digraph_remove_external(DG), - {CG#callgraph{digraph = NewDG}, External}. + {DG, External} = digraph_remove_external(DG), + {CG, External}. -spec non_local_calls(callgraph()) -> mfa_calls(). @@ -241,30 +241,30 @@ modules(#callgraph{digraph = DG}) -> -spec module_postorder(callgraph()) -> [[module()]]. module_postorder(#callgraph{digraph = DG}) -> + {MDG, _Nodes} = get_module_digraph_and_nodes(DG), + MDG1 = digraph_utils:condensation(MDG), + PostOrder = digraph_utils:postorder(MDG1), + PostOrder1 = sort_sccs_internally(PostOrder, MDG), + digraph:delete(MDG1), + digraph_delete(MDG), + PostOrder1. + +get_module_digraph_and_nodes(DG) -> Edges = digraph_edges(DG), Nodes = ordsets:from_list([M || {M,_F,_A} <- digraph_vertices(DG)]), MDG = digraph:new(), - MDG1 = digraph_confirm_vertices(Nodes, MDG), - MDG2 = create_module_digraph(Edges, MDG1), - MDG3 = digraph_utils:condensation(MDG2), - PostOrder = digraph_utils:postorder(MDG3), - PostOrder1 = sort_sccs_internally(PostOrder, MDG2), - digraph:delete(MDG2), - digraph_delete(MDG3), - PostOrder1. + MDG = digraph_confirm_vertices(Nodes, MDG), + MDG = create_module_digraph(Edges, MDG), + {MDG, Nodes}. %% The module deps of a module are modules that depend on the module -spec module_deps(callgraph()) -> dict(). module_deps(#callgraph{digraph = DG}) -> - Edges = digraph_edges(DG), - Nodes = ordsets:from_list([M || {M,_F,_A} <- digraph_vertices(DG)]), - MDG = digraph:new(), - MDG1 = digraph_confirm_vertices(Nodes, MDG), - MDG2 = create_module_digraph(Edges, MDG1), - Deps = [{N, ordsets:from_list(digraph:in_neighbours(MDG2, N))} + {MDG, Nodes} = get_module_digraph_and_nodes(DG), + Deps = [{N, ordsets:from_list(digraph:in_neighbours(MDG, N))} || N <- Nodes], - digraph_delete(MDG2), + digraph_delete(MDG), dict:from_list(Deps). -spec strip_module_deps(dict(), set()) -> dict(). diff --git a/lib/dialyzer/src/dialyzer_codeserver.erl b/lib/dialyzer/src/dialyzer_codeserver.erl index 13ca65e4dd..f1e87affbd 100644 --- a/lib/dialyzer/src/dialyzer_codeserver.erl +++ b/lib/dialyzer/src/dialyzer_codeserver.erl @@ -292,15 +292,11 @@ table__loop(Cached, Map) -> {NewCached, Ans} = case Cached of {M, Tree} -> - [Val] = [VarFun || {Var, _Fun} = VarFun <- cerl:module_defs(Tree), - cerl:fname_id(Var) =:= F, - cerl:fname_arity(Var) =:= A], + Val = find_fun(F, A, Tree), {Cached, Val}; _ -> Tree = fetch_and_expand(M, Map), - [Val] = [VarFun || {Var, _Fun} = VarFun <- cerl:module_defs(Tree), - cerl:fname_id(Var) =:= F, - cerl:fname_arity(Var) =:= A], + Val = find_fun(F, A, Tree), {{M, Tree}, Val} end, Pid ! {self(), MFA, Ans}, @@ -329,3 +325,12 @@ fetch_and_expand(Mod, Map) -> Msg = "found no module named '" ++ S ++ "' in the analyzed files", exit({error, Msg}) end. + +find_fun(F, A, Tree) -> + Pred = + fun({Var, _Fun}) -> + (cerl:fname_id(Var) =/= F) orelse + (cerl:fname_arity(Var) =/= A) + end, + [Val|_] = lists:dropwhile(Pred, cerl:module_defs(Tree)), + Val. diff --git a/lib/dialyzer/src/dialyzer_dataflow.erl b/lib/dialyzer/src/dialyzer_dataflow.erl index 6008dba080..aba13278ff 100644 --- a/lib/dialyzer/src/dialyzer_dataflow.erl +++ b/lib/dialyzer/src/dialyzer_dataflow.erl @@ -67,7 +67,6 @@ %%-define(DEBUG, true). %%-define(DEBUG_PP, true). -%%-define(DEBUG_TIME, true). %%-define(DOT, true). -ifdef(DEBUG). @@ -77,9 +76,6 @@ -define(debug(S_, L_), ok). -endif. -%%-define(debug1(S_, L_), io:format(S_, L_)). -%%-define(debug1(S_, L_), ok). - %%-------------------------------------------------------------------- -define(no_arg, no_arg). @@ -276,6 +272,7 @@ analyze_module(Tree, Plt, Callgraph, Records, GetWarnings) -> debug_pp(Tree, false), Module = cerl:atom_val(cerl:module_name(Tree)), RaceDetection = dialyzer_callgraph:get_race_detection(Callgraph), + RaceCode = dialyzer_callgraph:get_race_code(Callgraph), BehaviourTranslations = case RaceDetection of true -> dialyzer_behaviours:translatable_behaviours(Tree); @@ -286,9 +283,6 @@ analyze_module(Tree, Plt, Callgraph, Records, GetWarnings) -> TopFun, Plt, Module, Records, BehaviourTranslations), State1 = state__race_analysis(not GetWarnings, State), State2 = analyze_loop(State1), - RaceCode = dialyzer_callgraph:get_race_code(Callgraph), - Callgraph1 = State2#state.callgraph, - RaceCode1 = dialyzer_callgraph:get_race_code(Callgraph1), case GetWarnings of true -> State3 = state__set_warning_mode(State2), @@ -313,6 +307,8 @@ analyze_module(Tree, Plt, Callgraph, Records, GetWarnings) -> St#state{callgraph = Callgraph3} end; false -> + Callgraph1 = State2#state.callgraph, + RaceCode1 = dialyzer_callgraph:get_race_code(Callgraph1), state__restore_race_code( dict:merge(fun (_K, V1, _V2) -> V1 end, RaceCode, RaceCode1), State2) @@ -320,27 +316,26 @@ analyze_module(Tree, Plt, Callgraph, Records, GetWarnings) -> analyze_loop(#state{callgraph = Callgraph, races = Races} = State) -> case state__get_work(State) of - none -> state__clean_not_called(State); - {Fun, NewState} -> - ArgTypes = state__get_args(Fun, NewState), - case any_none(ArgTypes) of + none -> State; + {Fun, NewState1} -> + {ArgTypes, IsCalled} = state__get_args_and_status(Fun, NewState1), + case not IsCalled of true -> - ?debug("Not handling1 ~w: ~s\n", + ?debug("Not handling (not called) ~w: ~s\n", [state__lookup_name(get_label(Fun), State), t_to_string(t_product(ArgTypes))]), - analyze_loop(NewState); + analyze_loop(NewState1); false -> - case state__fun_env(Fun, NewState) of + case state__fun_env(Fun, NewState1) of none -> - ?debug("Not handling2 ~w: ~s\n", + ?debug("Not handling (no env) ~w: ~s\n", [state__lookup_name(get_label(Fun), State), t_to_string(t_product(ArgTypes))]), - analyze_loop(NewState); + analyze_loop(NewState1); Map -> ?debug("Handling fun ~p: ~s\n", [state__lookup_name(get_label(Fun), State), - t_to_string(state__fun_type(Fun, NewState))]), - NewState1 = state__mark_fun_as_handled(NewState, Fun), + t_to_string(state__fun_type(Fun, NewState1))]), Vars = cerl:fun_vars(Fun), Map1 = enter_type_lists(Vars, ArgTypes, Map), Body = cerl:fun_body(Fun), @@ -2892,28 +2887,22 @@ state__new(Callgraph, Tree, Plt, Module, Records, BehaviourTranslations) -> TreeMap = build_tree_map(Tree), Funs = dict:fetch_keys(TreeMap), FunTab = init_fun_tab(Funs, dict:new(), TreeMap, Callgraph, Plt, Opaques), - Work = init_work([get_label(Tree)]), - Env = dict:store(top, map__new(), dict:new()), + ExportedFuns = + [Fun || Fun <- Funs--[top], dialyzer_callgraph:is_escaping(Fun, Callgraph)], + Work = init_work(ExportedFuns), + Env = lists:foldl(fun(Fun, Env) -> dict:store(Fun, map__new(), Env) end, + dict:new(), Funs), #state{callgraph = Callgraph, envs = Env, fun_tab = FunTab, opaques = Opaques, plt = Plt, races = dialyzer_races:new(), records = Records, warning_mode = false, warnings = [], work = Work, tree_map = TreeMap, module = Module, behaviour_api_dict = BehaviourTranslations}. -state__mark_fun_as_handled(#state{fun_tab = FunTab} = State, Fun0) -> - Fun = get_label(Fun0), - case dict:find(Fun, FunTab) of - {ok, {not_handled, Entry}} -> - State#state{fun_tab = dict:store(Fun, Entry, FunTab)}; - {ok, {_, _}} -> - State - end. - state__warning_mode(#state{warning_mode = WM}) -> WM. state__set_warning_mode(#state{tree_map = TreeMap, fun_tab = FunTab, races = Races} = State) -> - ?debug("Starting warning pass\n", []), + ?debug("==========\nStarting warning pass\n==========\n", []), Funs = dict:fetch_keys(TreeMap), State#state{work = init_work([top|Funs--[top]]), fun_tab = FunTab, warning_mode = true, @@ -2985,7 +2974,7 @@ state__get_warnings(#state{tree_map = TreeMap, fun_tab = FunTab, {NotCalled, Ret} = case dict:fetch(get_label(Fun), FunTab) of {not_handled, {_Args0, Ret0}} -> {true, Ret0}; - {Args0, Ret0} -> {any_none(Args0), Ret0} + {_Args0, Ret0} -> {false, Ret0} end, case NotCalled of true -> @@ -3079,11 +3068,11 @@ state__lookup_record(Tag, Arity, #state{records = Records}) -> error end. -state__get_args(Tree, #state{fun_tab = FunTab}) -> +state__get_args_and_status(Tree, #state{fun_tab = FunTab}) -> Fun = get_label(Tree), case dict:find(Fun, FunTab) of - {ok, {not_handled, {ArgTypes, _}}} -> ArgTypes; - {ok, {ArgTypes, _}} -> ArgTypes + {ok, {not_handled, {ArgTypes, _}}} -> {ArgTypes, false}; + {ok, {ArgTypes, _}} -> {ArgTypes, true} end. build_tree_map(Tree) -> @@ -3099,7 +3088,7 @@ build_tree_map(Tree) -> cerl_trees:fold(Fun, dict:new(), Tree). init_fun_tab([top|Left], Dict, TreeMap, Callgraph, Plt, Opaques) -> - NewDict = dict:store(top, {not_handled, {[], t_none()}}, Dict), + NewDict = dict:store(top, {[], t_none()}, Dict), init_fun_tab(Left, NewDict, TreeMap, Callgraph, Plt, Opaques); init_fun_tab([Fun|Left], Dict, TreeMap, Callgraph, Plt, Opaques) -> Arity = cerl:fun_arity(dict:fetch(Fun, TreeMap)), @@ -3115,9 +3104,9 @@ init_fun_tab([Fun|Left], Dict, TreeMap, Callgraph, Plt, Opaques) -> false -> {Args, t_unit()} end end; - false -> {lists:duplicate(Arity, t_none()), t_unit()} + false -> {not_handled, {lists:duplicate(Arity, t_none()), t_unit()}} end, - NewDict = dict:store(Fun, {not_handled, FunEntry}, Dict), + NewDict = dict:store(Fun, FunEntry, Dict), init_fun_tab(Left, NewDict, TreeMap, Callgraph, Plt, Opaques); init_fun_tab([], Dict, _TreeMap, _Callgraph, _Plt, _Opaques) -> Dict. @@ -3141,7 +3130,8 @@ state__clean_not_called(#state{fun_tab = FunTab} = State) -> end, FunTab), State#state{fun_tab = NewFunTab}. -state__all_fun_types(#state{fun_tab = FunTab}) -> +state__all_fun_types(State) -> + #state{fun_tab = FunTab} = state__clean_not_called(State), Tab1 = dict:erase(top, FunTab), dict:map(fun(_Fun, {Args, Ret}) -> t_fun(Args, Ret)end, Tab1). diff --git a/lib/dialyzer/src/dialyzer_gui.erl b/lib/dialyzer/src/dialyzer_gui.erl index ccd80a4835..bac659548f 100644 --- a/lib/dialyzer/src/dialyzer_gui.erl +++ b/lib/dialyzer/src/dialyzer_gui.erl @@ -28,6 +28,23 @@ %%%----------------------------------------------------------------------- -module(dialyzer_gui). +-compile([{nowarn_deprecated_function,{gs,button,2}}, + {nowarn_deprecated_function,{gs,config,2}}, + {nowarn_deprecated_function,{gs,destroy,1}}, + {nowarn_deprecated_function,{gs,editor,2}}, + {nowarn_deprecated_function,{gs,entry,2}}, + {nowarn_deprecated_function,{gs,frame,2}}, + {nowarn_deprecated_function,{gs,label,2}}, + {nowarn_deprecated_function,{gs,listbox,2}}, + {nowarn_deprecated_function,{gs,menu,2}}, + {nowarn_deprecated_function,{gs,menubar,2}}, + {nowarn_deprecated_function,{gs,menubutton,2}}, + {nowarn_deprecated_function,{gs,menuitem,2}}, + {nowarn_deprecated_function,{gs,radiobutton,2}}, + {nowarn_deprecated_function,{gs,read,2}}, + {nowarn_deprecated_function,{gs,start,0}}, + {nowarn_deprecated_function,{gs,stop,0}}, + {nowarn_deprecated_function,{gs,window,2}}]). -export([start/1]). @@ -494,6 +511,16 @@ gui_loop(#gui_state{add_all = AddAll, add_file = AddFile, add_rec = AddRec, [ExtCalls]), free_editor(State, "Analysis done", Msg), gui_loop(State); + {BackendPid, ext_types, ExtTypes} -> + Map = fun({M,F,A}) -> io_lib:format("~p:~p/~p",[M,F,A]) end, + ExtTypeString = string:join(lists:map(Map, ExtTypes), "\n"), + Msg = io_lib:format("The following remote types are being used " + "but information about them is not available.\n" + "The analysis might get more precise by including " + "the modules containing these types and making sure " + "that they are exported:\n~s\n", [ExtTypeString]), + free_editor(State, "Analysis done", Msg), + gui_loop(State); {BackendPid, log, LogMsg} -> update_editor(Log, LogMsg), gui_loop(State); diff --git a/lib/dialyzer/src/dialyzer_gui_wx.erl b/lib/dialyzer/src/dialyzer_gui_wx.erl index e711c15ea7..9ff32bd8b1 100644 --- a/lib/dialyzer/src/dialyzer_gui_wx.erl +++ b/lib/dialyzer/src/dialyzer_gui_wx.erl @@ -503,6 +503,16 @@ gui_loop(#gui_state{backend_pid = BackendPid, doc_plt = DocPlt, [ExtCalls]), free_editor(State,"Analysis Done", Msg), gui_loop(State); + {BackendPid, ext_types, ExtTypes} -> + Map = fun({M,F,A}) -> io_lib:format("~p:~p/~p",[M,F,A]) end, + ExtTypeString = string:join(lists:map(Map, ExtTypes), "\n"), + Msg = io_lib:format("The following remote types are being used " + "but information about them is not available.\n" + "The analysis might get more precise by including " + "the modules containing these types and making sure " + "that they are exported:\n~s\n", [ExtTypeString]), + free_editor(State, "Analysis done", Msg), + gui_loop(State); {BackendPid, log, LogMsg} -> update_editor(Log, LogMsg), gui_loop(State); diff --git a/lib/dialyzer/src/dialyzer_plt.erl b/lib/dialyzer/src/dialyzer_plt.erl index 206c43e4e2..74892d1668 100644 --- a/lib/dialyzer/src/dialyzer_plt.erl +++ b/lib/dialyzer/src/dialyzer_plt.erl @@ -31,8 +31,7 @@ -export([check_plt/3, compute_md5_from_files/1, contains_mfa/2, - contains_module/2, - delete_contract_list/2, + all_modules/1, delete_list/2, delete_module/2, included_files/1, @@ -153,10 +152,8 @@ lookup_contract(#plt{contracts = Contracts}, {M, F, _} = MFA) when is_atom(M), is_atom(F) -> table_lookup(Contracts, MFA). --spec lookup_callbacks(plt(), module()) -> [{mfa(), - {{Filename::string(), - Line::pos_integer()}, - #contract{}}}]. +-spec lookup_callbacks(plt(), module()) -> + [{mfa(), {{Filename::string(), Line::pos_integer()}, #contract{}}}]. lookup_callbacks(#plt{callbacks = Callbacks}, Mod) when is_atom(Mod) -> FunModFilter = @@ -166,18 +163,6 @@ lookup_callbacks(#plt{callbacks = Callbacks}, Mod) when is_atom(Mod) -> ModCallbacks = dict:filter(FunModFilter, Callbacks), dict:to_list(ModCallbacks). --spec delete_contract_list(plt(), [mfa()]) -> plt(). - -delete_contract_list(#plt{contracts = Contracts, - callbacks = Callbacks} = PLT, List) -> - PLT#plt{contracts = table_delete_list(Contracts, List), - callbacks = table_delete_list(Callbacks, List)}. - -%% -spec insert(plt(), mfa() | integer(), {_, _}) -> plt(). -%% -%% insert(#plt{info = Info} = PLT, Id, Types) -> -%% PLT#plt{info = table_insert(Info, Id, Types)}. - -type ret_args_types() :: {erl_types:erl_type(), [erl_types:erl_type()]}. -spec insert_list(plt(), [{mfa() | integer(), ret_args_types()}]) -> plt(). @@ -220,10 +205,10 @@ get_exported_types(#plt{exported_types = ExpTypes}) -> lookup_module(#plt{info = Info}, M) when is_atom(M) -> table_lookup_module(Info, M). --spec contains_module(plt(), atom()) -> boolean(). +-spec all_modules(plt()) -> set(). -contains_module(#plt{info = Info, contracts = Cs}, M) when is_atom(M) -> - table_contains_module(Info, M) orelse table_contains_module(Cs, M). +all_modules(#plt{info = Info, contracts = Cs}) -> + sets:union(table_all_modules(Info), table_all_modules(Cs)). -spec contains_mfa(plt(), mfa()) -> boolean(). @@ -623,10 +608,12 @@ table_lookup_module(Plt, Mod) -> false -> {value, List} end. -table_contains_module(Plt, Mod) -> - dict:fold(fun({M, _F, _A}, _Val, _Acc) when M =:= Mod -> true; - (_, _, Acc) -> Acc - end, false, Plt). +table_all_modules(Plt) -> + Fold = + fun({M, _F, _A}, _Val, Acc) -> sets:add_element(M, Acc); + (_, _, Acc) -> Acc + end, + dict:fold(Fold, sets:new(), Plt). table_merge([H|T]) -> table_merge(T, H). diff --git a/lib/dialyzer/src/dialyzer_races.erl b/lib/dialyzer/src/dialyzer_races.erl index ee9d5e88a3..b9594f5301 100644 --- a/lib/dialyzer/src/dialyzer_races.erl +++ b/lib/dialyzer/src/dialyzer_races.erl @@ -39,7 +39,7 @@ let_tag_new/2, new/0, put_curr_fun/3, put_fun_args/2, put_race_analysis/2, put_race_list/3]). --export_type([races/0, mfa_or_funlbl/0, core_vars/0]). +-export_type([races/0, core_vars/0]). -include("dialyzer.hrl"). @@ -66,8 +66,6 @@ %%% %%% =========================================================================== --type mfa_or_funlbl() :: label() | mfa(). - -type label_type() :: label() | [label()] | {label()} | ?no_label. -type args() :: [label_type() | [string()]]. -type core_vars() :: cerl:cerl() | ?no_arg | ?bypassed. @@ -94,7 +92,7 @@ guard :: cerl:cerl()}). -record(end_case, {clauses :: [#end_clause{}]}). -record(curr_fun, {status :: 'in' | 'out', - mfa :: mfa_or_funlbl(), + mfa :: dialyzer_callgraph:mfa_or_funlbl(), label :: label(), def_vars :: [core_vars()], arg_types :: [erl_types:erl_type()], @@ -107,8 +105,8 @@ state :: _, %% XXX: recursive file_line :: file_line(), var_map :: dict()}). --record(fun_call, {caller :: mfa_or_funlbl(), - callee :: mfa_or_funlbl(), +-record(fun_call, {caller :: dialyzer_callgraph:mfa_or_funlbl(), + callee :: dialyzer_callgraph:mfa_or_funlbl(), arg_types :: [erl_types:erl_type()], vars :: [core_vars()]}). -record(let_tag, {var :: var_to_map1(), @@ -130,10 +128,10 @@ vars :: [core_vars()], file_line :: file_line(), index :: non_neg_integer(), - fun_mfa :: mfa_or_funlbl(), + fun_mfa :: dialyzer_callgraph:mfa_or_funlbl(), fun_label :: label()}). --record(races, {curr_fun :: mfa_or_funlbl(), +-record(races, {curr_fun :: dialyzer_callgraph:mfa_or_funlbl(), curr_fun_label :: label(), curr_fun_args = 'empty' :: core_args(), new_table = 'no_t' :: table(), @@ -158,7 +156,8 @@ %%% %%% =========================================================================== --spec store_race_call(mfa_or_funlbl(), [erl_types:erl_type()], [core_vars()], +-spec store_race_call(dialyzer_callgraph:mfa_or_funlbl(), + [erl_types:erl_type()], [core_vars()], file_line(), dialyzer_dataflow:state()) -> dialyzer_dataflow:state(). @@ -2405,7 +2404,7 @@ end_case_new(Clauses) -> end_clause_new(Arg, Pats, Guard) -> #end_clause{arg = Arg, pats = Pats, guard = Guard}. --spec get_curr_fun(races()) -> mfa_or_funlbl(). +-spec get_curr_fun(races()) -> dialyzer_callgraph:mfa_or_funlbl(). get_curr_fun(#races{curr_fun = CurrFun}) -> CurrFun. @@ -2444,7 +2443,7 @@ let_tag_new(Var, Arg) -> new() -> #races{}. --spec put_curr_fun(mfa_or_funlbl(), label(), races()) -> +-spec put_curr_fun(dialyzer_callgraph:mfa_or_funlbl(), label(), races()) -> races(). put_curr_fun(CurrFun, CurrFunLabel, Races) -> diff --git a/lib/dialyzer/src/dialyzer_succ_typings.erl b/lib/dialyzer/src/dialyzer_succ_typings.erl index 4d86bb34a7..de4c8a32a3 100644 --- a/lib/dialyzer/src/dialyzer_succ_typings.erl +++ b/lib/dialyzer/src/dialyzer_succ_typings.erl @@ -204,7 +204,7 @@ refine_one_module(M, State) -> #st{callgraph = Callgraph, codeserver = CodeServer, plt = PLT} = State, ModCode = dialyzer_codeserver:lookup_mod_code(M, CodeServer), AllFuns = collect_fun_info([ModCode]), - FunTypes = get_fun_types_from_plt(AllFuns, State), + FunTypes = get_fun_types_from_plt(AllFuns, Callgraph, PLT), Records = dialyzer_codeserver:lookup_mod_records(M, CodeServer), {NewFunTypes, RaceCode, PublicTables, NamedTables} = dialyzer_dataflow:get_fun_types(ModCode, PLT, Callgraph, Records), @@ -321,7 +321,9 @@ find_succ_typings(#st{callgraph = Callgraph, parent = Parent} = State, end end. -analyze_scc(SCC, #st{codeserver = Codeserver} = State) -> +analyze_scc(SCC, #st{codeserver = Codeserver, + callgraph = Callgraph, + plt = Plt} = State) -> SCC_Info = [{MFA, dialyzer_codeserver:lookup_mfa_code(MFA, Codeserver), dialyzer_codeserver:lookup_mod_records(M, Codeserver)} @@ -330,23 +332,19 @@ analyze_scc(SCC, #st{codeserver = Codeserver} = State) -> || {_, _, _} = MFA <- SCC], Contracts2 = [{MFA, Contract} || {MFA, {ok, Contract}} <- Contracts1], Contracts3 = orddict:from_list(Contracts2), + NextLabel = dialyzer_codeserver:get_next_core_label(Codeserver), {SuccTypes, PltContracts, NotFixpoint} = - find_succ_types_for_scc(SCC_Info, Contracts3, State), + find_succ_types_for_scc(SCC_Info, Contracts3, NextLabel, Callgraph, Plt), State1 = insert_into_plt(SuccTypes, State), ContrPlt = dialyzer_plt:insert_contract_list(State1#st.plt, PltContracts), {State1#st{plt = ContrPlt}, NotFixpoint}. -find_succ_types_for_scc(SCC_Info, Contracts, - #st{codeserver = Codeserver, - callgraph = Callgraph, plt = Plt} = State) -> +find_succ_types_for_scc(SCC_Info, Contracts, NextLabel, Callgraph, Plt) -> %% Assume that the PLT contains the current propagated types AllFuns = collect_fun_info([Fun || {_MFA, {_Var, Fun}, _Rec} <- SCC_Info]), - PropTypes = get_fun_types_from_plt(AllFuns, State), - MFAs = [MFA || {MFA, {_Var, _Fun}, _Rec} <- SCC_Info], - NextLabel = dialyzer_codeserver:get_next_core_label(Codeserver), - Plt1 = dialyzer_plt:delete_contract_list(Plt, MFAs), + PropTypes = get_fun_types_from_plt(AllFuns, Callgraph, Plt), FunTypes = dialyzer_typesig:analyze_scc(SCC_Info, NextLabel, - Callgraph, Plt1, PropTypes), + Callgraph, Plt, PropTypes), AllFunSet = sets:from_list([X || {X, _} <- AllFuns]), FilteredFunTypes = dict:filter(fun(X, _) -> sets:is_element(X, AllFunSet) @@ -372,13 +370,13 @@ find_succ_types_for_scc(SCC_Info, Contracts, ordsets:from_list([Fun || {Fun, _Arity} <- AllFuns])} end. -get_fun_types_from_plt(FunList, State) -> - get_fun_types_from_plt(FunList, State, dict:new()). +get_fun_types_from_plt(FunList, Callgraph, Plt) -> + get_fun_types_from_plt(FunList, Callgraph, Plt, dict:new()). -get_fun_types_from_plt([{FunLabel, Arity}|Left], State, Map) -> - Type = lookup_fun_type(FunLabel, Arity, State), - get_fun_types_from_plt(Left, State, dict:store(FunLabel, Type, Map)); -get_fun_types_from_plt([], _State, Map) -> +get_fun_types_from_plt([{FunLabel, Arity}|Left], Callgraph, Plt, Map) -> + Type = lookup_fun_type(FunLabel, Arity, Callgraph, Plt), + get_fun_types_from_plt(Left, Callgraph, Plt, dict:store(FunLabel, Type, Map)); +get_fun_types_from_plt([], _Callgraph, _Plt, Map) -> Map. collect_fun_info(Trees) -> @@ -396,7 +394,7 @@ collect_fun_info([Tree|Trees], List) -> collect_fun_info([], List) -> List. -lookup_fun_type(Label, Arity, #st{callgraph = Callgraph, plt = Plt}) -> +lookup_fun_type(Label, Arity, Callgraph, Plt) -> ID = lookup_name(Label, Callgraph), case dialyzer_plt:lookup(Plt, ID) of none -> erl_types:t_fun(Arity, erl_types:t_any()); diff --git a/lib/dialyzer/src/dialyzer_typesig.erl b/lib/dialyzer/src/dialyzer_typesig.erl index 4268814859..04ff8e4941 100644 --- a/lib/dialyzer/src/dialyzer_typesig.erl +++ b/lib/dialyzer/src/dialyzer_typesig.erl @@ -91,22 +91,24 @@ -type typesig_scc() :: [{mfa(), {cerl:c_var(), cerl:c_fun()}, dict()}]. -type typesig_funmap() :: [{type_var(), type_var()}]. %% Orddict --record(state, {callgraph :: dialyzer_callgraph:callgraph(), - cs = [] :: [constr()], - cmap = dict:new() :: dict(), - fun_map = [] :: typesig_funmap(), - fun_arities = dict:new() :: dict(), - in_match = false :: boolean(), - in_guard = false :: boolean(), - module :: module(), - name_map = dict:new() :: dict(), - next_label :: label(), - non_self_recs = [] :: [label()], - plt :: dialyzer_plt:plt(), - prop_types = dict:new() :: dict(), - records = dict:new() :: dict(), - opaques = [] :: [erl_types:erl_type()], - scc = [] :: [type_var()]}). +-record(state, {callgraph :: dialyzer_callgraph:callgraph(), + cs = [] :: [constr()], + cmap = dict:new() :: dict(), + fun_map = [] :: typesig_funmap(), + fun_arities = dict:new() :: dict(), + in_match = false :: boolean(), + in_guard = false :: boolean(), + module :: module(), + name_map = dict:new() :: dict(), + next_label :: label(), + self_recs :: [label()], + plt :: dialyzer_plt:plt(), + prop_types = dict:new() :: dict(), + records = dict:new() :: dict(), + opaques = [] :: [erl_types:erl_type()], + scc = [] :: [type_var()], + mfas = [] :: [dialyzer_callgraph:mfa_or_funlbl()] + }). %%----------------------------------------------------------------------------- @@ -448,7 +450,8 @@ traverse(Tree, DefinedVars, State) -> %% Check if a record is constructed. _ -> Arity = length(Fields), - case state__lookup_record(State2, cerl:atom_val(Tag), Arity) of + Records = State2#state.records, + case lookup_record(Records, cerl:atom_val(Tag), Arity) of error -> {State2, TupleType}; {ok, RecType} -> State3 = state__store_conj(TupleType, sub, RecType, State2), @@ -646,8 +649,14 @@ get_plt_constr(MFA, Dst, ArgVars, State) -> PltRes = dialyzer_plt:lookup(Plt, MFA), Opaques = State#state.opaques, Module = State#state.module, + SCCMFAs = State#state.mfas, {FunModule, _, _} = MFA, - case dialyzer_plt:lookup_contract(Plt, MFA) of + Contract = + case lists:member(MFA, SCCMFAs) of + true -> none; + false -> dialyzer_plt:lookup_contract(Plt, MFA) + end, + case Contract of none -> case PltRes of none -> State; @@ -1246,6 +1255,8 @@ get_bif_constr({erlang, is_record, 2}, Dst, [Var, Tag] = Args, _State) -> mk_constraint(Var, sub, ArgV)]); get_bif_constr({erlang, is_record, 3}, Dst, [Var, Tag, Arity] = Args, State) -> %% TODO: Revise this to make it precise for Tag and Arity. + Records = State#state.records, + AllOpaques = State#state.opaques, ArgFun = fun(Map) -> case t_is_atom(true, lookup_type(Dst, Map)) of @@ -1262,10 +1273,8 @@ get_bif_constr({erlang, is_record, 3}, Dst, [Var, Tag, Arity] = Args, State) -> GenRecord = t_tuple([TagType|AnyElems]), case t_atom_vals(TagType) of [TagVal] -> - case state__lookup_record(State, TagVal, - ArityVal - 1) of + case lookup_record(Records, TagVal, ArityVal - 1) of {ok, Type} -> - AllOpaques = State#state.opaques, case t_opaque_match_record(Type, AllOpaques) of [Opaque] -> Opaque; _ -> Type @@ -1287,7 +1296,7 @@ get_bif_constr({erlang, is_record, 3}, Dst, [Var, Tag, Arity] = Args, State) -> DstFun = fun(Map) -> [TmpVar, TmpTag, TmpArity] = TmpArgTypes = lookup_type_list(Args, Map), TmpArgTypes2 = - case lists:member(TmpVar, State#state.opaques) of + case lists:member(TmpVar, AllOpaques) of true -> case t_is_integer(TmpArity) of true -> @@ -1297,7 +1306,8 @@ get_bif_constr({erlang, is_record, 3}, Dst, [Var, Tag, Arity] = Args, State) -> true -> case t_atom_vals(TmpTag) of [TmpTagVal] -> - case state__lookup_record(State, TmpTagVal, TmpArityVal - 1) of + case lookup_record(Records, TmpTagVal, + TmpArityVal - 1) of {ok, TmpType} -> case t_is_none(t_inf(TmpType, TmpVar, opaque)) of true -> TmpArgTypes; @@ -1526,9 +1536,10 @@ get_bif_constr({erlang, element, 2} = _BIF, Dst, Args, case t_is_none(GenType) of true -> ?debug("Bif: ~w failed\n", [_BIF]), throw(error); false -> + Opaques = State#state.opaques, Fun = fun(Map) -> [I, T] = ATs = lookup_type_list(Args, Map), - ATs2 = case lists:member(T, State#state.opaques) of + ATs2 = case lists:member(T, Opaques) of true -> [I, erl_types:t_opaque_structure(T)]; false -> ATs end, @@ -1546,7 +1557,7 @@ get_bif_constr({erlang, element, 2} = _BIF, Dst, Args, end; get_bif_constr({M, F, A} = _BIF, Dst, Args, State) -> GenType = erl_bif_types:type(M, F, A), - Opaques = State#state.opaques, + Opaques = State#state.opaques, case t_is_none(GenType) of true -> ?debug("Bif: ~w failed\n", [_BIF]), throw(error); false -> @@ -1612,11 +1623,12 @@ get_bif_test_constr(Dst, Arg, Type, State) -> end end, ArgV = ?mk_fun_var(ArgFun, [Dst]), + Opaques = State#state.opaques, DstFun = fun(Map) -> ArgType = lookup_type(Arg, Map), case t_is_none(t_inf(ArgType, Type)) of true -> - case lists:member(ArgType, State#state.opaques) of + case lists:member(ArgType, Opaques) of true -> OpaqueStruct = erl_types:t_opaque_structure(ArgType), case t_is_none(t_inf(OpaqueStruct, Type)) of @@ -1743,33 +1755,29 @@ solve_ref_or_list(#constraint_ref{id = Id, deps = Deps}, true -> solve_self_recursive(Cs, Map, MapDict, Id, t_none(), State); false -> solve_ref_or_list(Cs, Map, MapDict, State) end, - case Res of - {error, NewMapDict} -> - ?debug("Error solving for function ~p\n", [debug_lookup_name(Id)]), - Arity = state__fun_arity(Id, State), - FunType = - case state__prop_domain(t_var_name(Id), State) of - error -> t_fun(Arity, t_none()); - {ok, Dom} -> t_fun(Dom, t_none()) - end, - NewMap1 = enter_type(Id, FunType, Map), - NewMap2 = - case state__get_rec_var(Id, State) of - {ok, Var} -> enter_type(Var, FunType, NewMap1); - error -> NewMap1 - end, - {ok, dict:store(Id, NewMap2, NewMapDict), NewMap2}; - {ok, NewMapDict, NewMap} -> - ?debug("Done solving fun: ~p\n", [debug_lookup_name(Id)]), - FunType = lookup_type(Id, NewMap), - NewMap1 = enter_type(Id, FunType, Map), - NewMap2 = - case state__get_rec_var(Id, State) of - {ok, Var} -> enter_type(Var, FunType, NewMap1); - error -> NewMap1 - end, - {ok, dict:store(Id, NewMap2, NewMapDict), NewMap2} - end + {NewMapDict, FunType} = + case Res of + {error, NewMapDict0} -> + ?debug("Error solving for function ~p\n", [debug_lookup_name(Id)]), + Arity = state__fun_arity(Id, State), + FunType0 = + case state__prop_domain(t_var_name(Id), State) of + error -> t_fun(Arity, t_none()); + {ok, Dom} -> t_fun(Dom, t_none()) + end, + {NewMapDict0, FunType0}; + {ok, NewMapDict0, NewMap} -> + ?debug("Done solving fun: ~p\n", [debug_lookup_name(Id)]), + FunType0 = lookup_type(Id, NewMap), + {NewMapDict0, FunType0} + end, + NewMap1 = enter_type(Id, FunType, Map), + NewMap2 = + case state__get_rec_var(Id, State) of + {ok, Var} -> enter_type(Var, FunType, NewMap1); + error -> NewMap1 + end, + {ok, dict:store(Id, NewMap2, NewMapDict), NewMap2} end; solve_ref_or_list(#constraint_list{type=Type, list = Cs, deps = Deps, id = Id}, Map, MapDict, State) -> @@ -2078,10 +2086,15 @@ mk_var_no_lit_list(List) -> %% ============================================================================ new_state(SCC0, NextLabel, CallGraph, Plt, PropTypes) -> - NameMap = dict:from_list([{MFA, Var} || {MFA, {Var, _Fun}, _Rec} <- SCC0]), + List = [{MFA, Var} || {MFA, {Var, _Fun}, _Rec} <- SCC0], + NameMap = dict:from_list(List), + MFAs = [MFA || {MFA, _Var} <- List], SCC = [mk_var(Fun) || {_MFA, {_Var, Fun}, _Rec} <- SCC0], + SelfRecs = [F || F <- SCC, + dialyzer_callgraph:is_self_rec(t_var_name(F), CallGraph)], #state{callgraph = CallGraph, name_map = NameMap, next_label = NextLabel, - prop_types = PropTypes, plt = Plt, scc = ordsets:from_list(SCC)}. + prop_types = PropTypes, plt = Plt, scc = ordsets:from_list(SCC), + mfas = MFAs, self_recs = ordsets:from_list(SelfRecs)}. state__set_rec_dict(State, RecDict) -> State#state{records = RecDict}. @@ -2091,15 +2104,6 @@ state__set_opaques(#state{records = RecDict} = State, {M, _F, _A}) -> erl_types:module_builtin_opaques(M) ++ t_opaque_from_records(RecDict), State#state{opaques = Opaques, module = M}. -state__lookup_record(#state{records = Records}, Tag, Arity) -> - case erl_types:lookup_record(Tag, Arity, Records) of - {ok, Fields} -> - {ok, t_tuple([t_from_term(Tag)| - [FieldType || {_FieldName, FieldType} <- Fields]])}; - error -> - error - end. - state__set_in_match(State, Bool) -> State#state{in_match = Bool}. @@ -2268,14 +2272,12 @@ state__get_cs(Var, #state{cmap = Dict}) -> %% The functions here will not be treated as self recursive. %% These functions will need to be handled as such manually. -state__mark_as_non_self_rec(SCC, #state{non_self_recs = NS} = State) -> - State#state{non_self_recs = ordsets:union(NS, ordsets:from_list(SCC))}. +state__mark_as_non_self_rec(SCC, #state{self_recs = SelfRecs} = State) -> + %% TODO: Check if the result is always empty and just set it to [] if so. + State#state{self_recs = ordsets:subtract(SelfRecs, ordsets:from_list(SCC))}. -state__is_self_rec(Fun, #state{callgraph = CallGraph, non_self_recs = NS}) -> - case ordsets:is_element(Fun, NS) of - true -> false; - false -> dialyzer_callgraph:is_self_rec(t_var_name(Fun), CallGraph) - end. +state__is_self_rec(Fun, #state{self_recs = SelfRecs}) -> + ordsets:is_element(Fun, SelfRecs). state__store_funs(Vars0, Funs0, #state{fun_map = Map} = State) -> debug_make_name_map(Vars0, Funs0), @@ -2689,6 +2691,15 @@ find_constraint(Tuple, [#constraint_list{list = List}|Cs]) -> find_constraint(Tuple, [_|Cs]) -> find_constraint(Tuple, Cs). +lookup_record(Records, Tag, Arity) -> + case erl_types:lookup_record(Tag, Arity, Records) of + {ok, Fields} -> + {ok, t_tuple([t_from_term(Tag)| + [FieldType || {_FieldName, FieldType} <- Fields]])}; + error -> + error + end. + %% ============================================================================ %% %% Pretty printer and debug facilities. |