diff options
Diffstat (limited to 'lib/dialyzer/src/dialyzer_typesig.erl')
| -rw-r--r-- | lib/dialyzer/src/dialyzer_typesig.erl | 99 |
1 files changed, 62 insertions, 37 deletions
diff --git a/lib/dialyzer/src/dialyzer_typesig.erl b/lib/dialyzer/src/dialyzer_typesig.erl index 1787b66192..4d650592e2 100644 --- a/lib/dialyzer/src/dialyzer_typesig.erl +++ b/lib/dialyzer/src/dialyzer_typesig.erl @@ -2,7 +2,7 @@ %%----------------------------------------------------------------------- %% %CopyrightBegin% %% -%% Copyright Ericsson AB 2006-2016. All Rights Reserved. +%% Copyright Ericsson AB 2006-2017. All Rights Reserved. %% %% Licensed under the Apache License, Version 2.0 (the "License"); %% you may not use this file except in compliance with the License. @@ -29,7 +29,7 @@ -module(dialyzer_typesig). --export([analyze_scc/6]). +-export([analyze_scc/7]). -export([get_safe_underapprox/2]). %%-import(helper, %% 'helper' could be any module doing sanity checks... @@ -101,10 +101,9 @@ -type types() :: erl_types:type_table(). --type typesig_scc() :: [{mfa(), {cerl:c_var(), cerl:c_fun()}, types()}]. -type typesig_funmap() :: #{type_var() => type_var()}. --type prop_types() :: dict:dict(label(), types()). +-type prop_types() :: dict:dict(label(), erl_types:erl_type()). -record(state, {callgraph :: dialyzer_callgraph:callgraph() | 'undefined', @@ -121,7 +120,7 @@ plt :: dialyzer_plt:plt() | 'undefined', prop_types = dict:new() :: prop_types(), - records = dict:new() :: types(), + records = maps:new() :: types(), scc = [] :: ordsets:ordset(type_var()), mfas :: [mfa()], solvers = [] :: [solver()] @@ -160,11 +159,10 @@ %%----------------------------------------------------------------------------- %% Analysis of strongly connected components. %% -%% analyze_scc(SCC, NextLabel, CallGraph, PLT, PropTypes, Solvers) -> FunTypes +%% analyze_scc(SCC, NextLabel, CallGraph, CodeServer, +%% PLT, PropTypes, Solvers) -> FunTypes %% -%% SCC - [{MFA, Def, Records}] -%% where Def = {Var, Fun} as in the Core Erlang module definitions. -%% Records = dict(RecName, {Arity, [{FieldName, FieldType}]}) +%% SCC - [{MFA}] %% NextLabel - An integer that is higher than any label in the code. %% CallGraph - A callgraph as produced by dialyzer_callgraph.erl %% Note: The callgraph must have been built with all the @@ -176,28 +174,27 @@ %% Solvers - User specified solvers. %%----------------------------------------------------------------------------- --spec analyze_scc(typesig_scc(), label(), +-spec analyze_scc([mfa()], label(), dialyzer_callgraph:callgraph(), + dialyzer_codeserver:codeserver(), dialyzer_plt:plt(), prop_types(), [solver()]) -> prop_types(). -analyze_scc(SCC, NextLabel, CallGraph, Plt, PropTypes, Solvers0) -> +analyze_scc(SCC, NextLabel, CallGraph, CServer, Plt, PropTypes, Solvers0) -> Solvers = solvers(Solvers0), - assert_format_of_scc(SCC), - State1 = new_state(SCC, NextLabel, CallGraph, Plt, PropTypes, Solvers), - DefSet = add_def_list([Var || {_MFA, {Var, _Fun}, _Rec} <- SCC], sets:new()), - State2 = traverse_scc(SCC, DefSet, State1), + State1 = new_state(SCC, NextLabel, CallGraph, CServer, Plt, PropTypes, + Solvers), + DefSet = add_def_list(maps:values(State1#state.name_map), sets:new()), + ModRecs = [{M, dialyzer_codeserver:lookup_mod_records(M, CServer)} || + M <- lists:usort([M || {M, _, _} <- SCC])], + State2 = traverse_scc(SCC, CServer, DefSet, ModRecs, State1), State3 = state__finalize(State2), + erlang:garbage_collect(), Funs = state__scc(State3), pp_constrs_scc(Funs, State3), constraints_to_dot_scc(Funs, State3), T = solve(Funs, State3), dict:from_list(maps:to_list(T)). -assert_format_of_scc([{_MFA, {_Var, _Fun}, _Records}|Left]) -> - assert_format_of_scc(Left); -assert_format_of_scc([]) -> - ok. - solvers([]) -> [v2]; solvers(Solvers) -> Solvers. @@ -207,12 +204,15 @@ solvers(Solvers) -> Solvers. %% %% ============================================================================ -traverse_scc([{_MFA, Def, Rec}|Left], DefSet, AccState) -> +traverse_scc([{M,_,_}=MFA|Left], Codeserver, DefSet, ModRecs, AccState) -> + Def = dialyzer_codeserver:lookup_mfa_code(MFA, Codeserver), + {M, Rec} = lists:keyfind(M, 1, ModRecs), TmpState1 = state__set_rec_dict(AccState, Rec), DummyLetrec = cerl:c_letrec([Def], cerl:c_atom(foo)), - {NewAccState, _} = traverse(DummyLetrec, DefSet, TmpState1), - traverse_scc(Left, DefSet, NewAccState); -traverse_scc([], _DefSet, AccState) -> + TmpState2 = state__new_constraint_context(TmpState1), + {NewAccState, _} = traverse(DummyLetrec, DefSet, TmpState2), + traverse_scc(Left, Codeserver, DefSet, ModRecs, NewAccState); +traverse_scc([], _Codeserver, _DefSet, _ModRecs, AccState) -> AccState. traverse(Tree, DefinedVars, State) -> @@ -2106,6 +2106,12 @@ v2_solve_disj([I|Is], [C|Cs], I, Map0, V2State0, UL, MapL, Eval, Uneval, end; v2_solve_disj([], [], _I, _Map, V2State, UL, MapL, Eval, Uneval, Failed) -> {ok, V2State, lists:reverse(Eval), UL, MapL, lists:reverse(Uneval), Failed}; +v2_solve_disj([every_i], Cs, I, Map, V2State, UL, MapL, Eval, Uneval, Failed) -> + NewIs = case Cs of + [] -> []; + _ -> [I, every_i] + end, + v2_solve_disj(NewIs, Cs, I, Map, V2State, UL, MapL, Eval, Uneval, Failed); v2_solve_disj(Is, [C|Cs], I, Map, V2State, UL, MapL, Eval, Uneval0, Failed) -> Uneval = [{I,C#constraint_list.id} || not is_failed_list(C, V2State)] ++ Uneval0, @@ -2177,7 +2183,7 @@ v2_solve_conj([I|Is], [Cs|Tail], I, Map0, Conj, IsFlat, V2State0, M = lists:keydelete(I, 1, vars_per_child(U, Masks)), {V2State2, NewF0} = save_updated_vars_list(AllCs, M, V2State1), {NewF, F} = lists:splitwith(fun(J) -> J < I end, NewF0), - Is1 = lists:umerge(Is, F), + Is1 = umerge_mask(Is, F), NewFs = [NewF|NewFs0], v2_solve_conj(Is1, Tail, I+1, Map, Conj, IsFlat, V2State2, [U|UL], NewFs, VarsUp, LastMap, LastFlags) @@ -2199,6 +2205,14 @@ v2_solve_conj([], _Cs, _I, Map, Conj, IsFlat, V2State, UL, NewFs, VarsUp, v2_solve_conj(NewFlags, Cs, 1, Map, Conj, IsFlat, V2State, [], [], [U|VarsUp], Map, NewFlags) end; +v2_solve_conj([every_i], Cs, I, Map, Conj, IsFlat, V2State, UL, NewFs, VarsUp, + LastMap, LastFlags) -> + NewIs = case Cs of + [] -> []; + _ -> [I, every_i] + end, + v2_solve_conj(NewIs, Cs, I, Map, Conj, IsFlat, V2State, UL, NewFs, VarsUp, + LastMap, LastFlags); v2_solve_conj(Is, [_|Tail], I, Map, Conj, IsFlat, V2State, UL, NewFs, VarsUp, LastMap, LastFlags) -> v2_solve_conj(Is, Tail, I+1, Map, Conj, IsFlat, V2State, UL, NewFs, VarsUp, @@ -2215,7 +2229,12 @@ report_detected_loop(_) -> add_mask_to_flags(Flags, [Im|M], I, L) when I > Im -> add_mask_to_flags(Flags, M, I, [Im|L]); add_mask_to_flags(Flags, [_|M], _I, L) -> - {lists:umerge(M, Flags), lists:reverse(L)}. + {umerge_mask(Flags, M), lists:reverse(L)}. + +umerge_mask([every_i]=Is, _F) -> + Is; +umerge_mask(Is, F) -> + lists:umerge(Is, F). get_mask(V, Masks) -> case maps:find(V, Masks) of @@ -2229,7 +2248,7 @@ get_flags(#v2_state{constr_data = ConData}=V2State0, C) -> error -> ?debug("get_flags Id=~w Flags=all ~w\n", [Id, length(Cs)]), V2State = V2State0#v2_state{constr_data = maps:put(Id, {[],[]}, ConData)}, - {V2State, lists:seq(1, length(Cs))}; + {V2State, [every_i]}; {ok, failed} -> {V2State0, failed_list}; {ok, {Part,U}} when U =/= [] -> @@ -2702,11 +2721,14 @@ pp_map(_S, _Map) -> %% %% ============================================================================ -new_state(SCC0, NextLabel, CallGraph, Plt, PropTypes, Solvers) -> - List = [{MFA, Var} || {MFA, {Var, _Fun}, _Rec} <- SCC0], +new_state(MFAs, NextLabel, CallGraph, CServer, Plt, PropTypes, Solvers) -> + List_SCC = + [begin + {Var, Label} = dialyzer_codeserver:lookup_mfa_var_label(MFA, CServer), + {{MFA, Var}, t_var(Label)} + end || MFA <- MFAs], + {List, SCC} = lists:unzip(List_SCC), NameMap = maps:from_list(List), - MFAs = [MFA || {MFA, _Var} <- List], - SCC = [mk_var(Fun) || {_MFA, {_Var, Fun}, _Rec} <- SCC0], SelfRec = case SCC of [OneF] -> @@ -2906,8 +2928,9 @@ state__get_rec_var(Fun, #state{fun_map = Map}) -> maps:find(Fun, Map). state__finalize(State) -> - State1 = enumerate_constraints(State), - order_fun_constraints(State1). + State1 = state__new_constraint_context(State), + State2 = enumerate_constraints(State1), + order_fun_constraints(State2). %% ============================================================================ %% @@ -2987,7 +3010,7 @@ find_constraint_deps([Type|Tail], Acc) -> NewAcc = [[t_var_name(D) || D <- t_collect_vars(Type)]|Acc], find_constraint_deps(Tail, NewAcc); find_constraint_deps([], Acc) -> - lists:flatten(Acc). + lists:append(Acc). mk_constraint_1(Lhs, eq, Rhs, Deps) when Lhs < Rhs -> #constraint{lhs = Lhs, op = eq, rhs = Rhs, deps = Deps}; @@ -3095,8 +3118,8 @@ expand_to_conjunctions(#constraint_list{type = disj, list = List}) -> List1 = [C || C <- List, is_simple_constraint(C)], %% Just an assert. [] = [C || #constraint{} = C <- List1], - Expanded = lists:flatten([expand_to_conjunctions(C) - || #constraint_list{} = C <- List]), + Expanded = lists:append([expand_to_conjunctions(C) + || #constraint_list{} = C <- List]), ReturnList = Expanded ++ List1, if length(ReturnList) > ?DISJ_NORM_FORM_LIMIT -> throw(too_many_disj); true -> ReturnList @@ -3121,8 +3144,10 @@ calculate_deps(List) -> calculate_deps([H|Tail], Acc) -> Deps = get_deps(H), calculate_deps(Tail, [Deps|Acc]); +calculate_deps([], []) -> []; +calculate_deps([], [L]) -> L; calculate_deps([], Acc) -> - ordsets:from_list(lists:flatten(Acc)). + lists:umerge(Acc). mk_conj_constraint_list(List) -> mk_constraint_list(conj, List). |