diff options
Diffstat (limited to 'lib/dialyzer/src/dialyzer_typesig.erl')
| -rw-r--r-- | lib/dialyzer/src/dialyzer_typesig.erl | 355 |
1 files changed, 153 insertions, 202 deletions
diff --git a/lib/dialyzer/src/dialyzer_typesig.erl b/lib/dialyzer/src/dialyzer_typesig.erl index a418a11e65..db7875704a 100644 --- a/lib/dialyzer/src/dialyzer_typesig.erl +++ b/lib/dialyzer/src/dialyzer_typesig.erl @@ -2,7 +2,7 @@ %%----------------------------------------------------------------------- %% %CopyrightBegin% %% -%% Copyright Ericsson AB 2006-2013. All Rights Reserved. +%% Copyright Ericsson AB 2006-2014. 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 @@ -31,28 +31,30 @@ -export([analyze_scc/6]). -export([get_safe_underapprox/2]). +%%-import(helper, %% 'helper' could be any module doing sanity checks... +-import(erl_types, + [t_has_var/1, t_inf/2, t_is_equal/2, t_is_subtype/2, + t_subtract/2, t_subtract_list/2, t_sup/1, t_sup/2,t_unify/2]). + -import(erl_types, [t_any/0, t_atom/0, t_atom_vals/1, t_binary/0, t_bitstr/0, t_bitstr/2, t_bitstr_concat/1, t_boolean/0, t_collect_vars/1, t_cons/2, t_cons_hd/1, t_cons_tl/1, t_float/0, t_from_range/2, t_from_term/1, t_fun/0, t_fun/2, t_fun_args/1, t_fun_range/1, - t_has_var/1, - t_inf/2, t_inf/3, t_integer/0, - t_is_any/1, t_is_atom/1, t_is_atom/2, t_is_cons/1, t_is_equal/2, + t_integer/0, + t_is_any/1, t_is_atom/1, t_is_any_atom/2, t_is_cons/1, t_is_float/1, t_is_fun/1, t_is_integer/1, t_non_neg_integer/0, t_is_list/1, t_is_nil/1, t_is_none/1, t_is_number/1, - t_is_subtype/2, t_limit/2, t_list/0, t_list/1, + t_limit/2, t_list/0, t_list/1, t_list_elements/1, t_nonempty_list/1, t_maybe_improper_list/0, t_module/0, t_number/0, t_number_vals/1, - t_opaque_match_record/2, t_opaque_matching_structure/2, - t_opaque_from_records/1, t_pid/0, t_port/0, t_product/1, t_reference/0, - t_subst/2, t_subtract/2, t_subtract_list/2, t_sup/1, t_sup/2, + t_subst/2, t_timeout/0, t_tuple/0, t_tuple/1, - t_unify/3, t_var/1, t_var_name/1, + t_var/1, t_var_name/1, t_none/0, t_unit/0]). -include("dialyzer.hrl"). @@ -105,11 +107,10 @@ module :: module(), name_map = dict:new() :: dict(), next_label = 0 :: label(), - self_rec :: erl_types:erl_type(), + self_rec :: 'false' | erl_types:erl_type(), plt :: dialyzer_plt:plt(), prop_types = {'d', dict:new()} :: dict_or_ets(), records = dict:new() :: dict(), - opaques = [] :: [erl_types:erl_type()], scc = [] :: [type_var()], mfas :: [tuple()], solvers = [] :: [solver()] @@ -192,11 +193,10 @@ solvers(Solvers) -> Solvers. %% %% ============================================================================ -traverse_scc([{MFA, Def, Rec}|Left], DefSet, AccState) -> +traverse_scc([{_MFA, Def, Rec}|Left], DefSet, AccState) -> TmpState1 = state__set_rec_dict(AccState, Rec), - TmpState2 = state__set_opaques(TmpState1, MFA), DummyLetrec = cerl:c_letrec([Def], cerl:c_atom(foo)), - {NewAccState, _} = traverse(DummyLetrec, DefSet, TmpState2), + {NewAccState, _} = traverse(DummyLetrec, DefSet, TmpState1), traverse_scc(Left, DefSet, NewAccState); traverse_scc([], _DefSet, AccState) -> AccState. @@ -386,12 +386,7 @@ traverse(Tree, DefinedVars, State) -> case cerl:unfold_literal(Tree) of Tree -> Type = t_from_term(cerl:concrete(Tree)), - NewType = - case erl_types:t_opaque_match_atom(Type, State#state.opaques) of - [Opaque] -> Opaque; - _ -> Type - end, - {State, NewType}; + {State, Type}; NewTree -> traverse(NewTree, DefinedVars, State) end; module -> @@ -462,25 +457,17 @@ traverse(Tree, DefinedVars, State) -> [Tag|Fields] -> case cerl:is_c_atom(Tag) of true -> - %% Check if an opaque term is constructed. - case t_opaque_match_record(TupleType, State#state.opaques) of - [Opaque] -> - OpStruct = t_opaque_matching_structure(TupleType, Opaque), - State3 = state__store_conj(TupleType, sub, OpStruct, State2), - {State3, Opaque}; - %% Check if a record is constructed. - _ -> - Arity = length(Fields), - 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), - {State3, TupleType} - end - end; + %% Check if a record is constructed. + Arity = length(Fields), + 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), + {State3, TupleType} + end; false -> {State2, TupleType} - end; + end; [] -> {State2, TupleType} end; values -> @@ -591,9 +578,13 @@ handle_try(Tree, DefinedVars, State) -> case state__is_in_guard(State) of true -> Conj1 = mk_conj_constraint_list([ArgBodyCs, - mk_constraint(BodyVar, eq, TreeVar)]), + mk_constraint(BodyVar, + eq, + TreeVar)]), Disj = mk_disj_constraint_list([Conj1, - mk_constraint(HandlerVar, eq, TreeVar)]), + mk_constraint(HandlerVar, + eq, + TreeVar)]), NewState1 = state__new_constraint_context(HandlerState), Conj2 = mk_conj_constraint_list([OldCs, Disj]), NewState2 = state__store_conj(Conj2, NewState1), @@ -604,19 +595,27 @@ handle_try(Tree, DefinedVars, State) -> {false, false} -> Conj1 = mk_conj_constraint_list([ArgBodyCs, - mk_constraint(TreeVar, eq, BodyVar)]), + mk_constraint(TreeVar, + eq, + BodyVar)]), Conj2 = mk_conj_constraint_list([HandlerCs, - mk_constraint(TreeVar, eq, HandlerVar)]), + mk_constraint(TreeVar, + eq, + HandlerVar)]), Disj = mk_disj_constraint_list([Conj1, Conj2]), {Disj, TreeVar}; {false, true} -> {mk_conj_constraint_list([ArgBodyCs, - mk_constraint(TreeVar, eq, BodyVar)]), + mk_constraint(TreeVar, + eq, + BodyVar)]), BodyVar}; {true, false} -> {mk_conj_constraint_list([HandlerCs, - mk_constraint(TreeVar, eq, HandlerVar)]), + mk_constraint(TreeVar, + eq, + HandlerVar)]), HandlerVar}; {true, true} -> ?debug("Throw failed\n", []), @@ -668,10 +667,7 @@ handle_call(Call, DefinedVars, State) -> get_plt_constr(MFA, Dst, ArgVars, State) -> Plt = state__plt(State), PltRes = dialyzer_plt:lookup(Plt, MFA), - Opaques = State#state.opaques, - Module = State#state.module, SCCMFAs = State#state.mfas, - {FunModule, _, _} = MFA, Contract = case lists:member(MFA, SCCMFAs) of true -> none; @@ -691,28 +687,24 @@ get_plt_constr(MFA, Dst, ArgVars, State) -> none -> {?mk_fun_var(fun(Map) -> ArgTypes = lookup_type_list(ArgVars, Map), - dialyzer_contracts:get_contract_return(C, ArgTypes) + get_contract_return(C, ArgTypes) end, ArgVars), GenArgs}; {value, {PltRetType, PltArgTypes}} -> %% Need to combine the contract with the success typing. {?mk_fun_var( fun(Map) -> - ArgTypes0 = lookup_type_list(ArgVars, Map), - ArgTypes = case FunModule =:= Module of - false -> - List = lists:zip(PltArgTypes, ArgTypes0), - [erl_types:t_unopaque_on_mismatch(T1, T2, Opaques) - || {T1, T2} <- List]; - true -> ArgTypes0 - end, - CRet = dialyzer_contracts:get_contract_return(C, ArgTypes), - t_inf(CRet, PltRetType, opaque) + ArgTypes = lookup_type_list(ArgVars, Map), + CRet = get_contract_return(C, ArgTypes), + t_inf(CRet, PltRetType) end, ArgVars), - [t_inf(X, Y, opaque) || {X, Y} <- lists:zip(GenArgs, PltArgTypes)]} + [t_inf(X, Y) || {X, Y} <- lists:zip(GenArgs, PltArgTypes)]} end, state__store_conj_lists([Dst|ArgVars], sub, [RetType|ArgCs], State) end. +get_contract_return(C, ArgTypes) -> + dialyzer_contracts:get_contract_return(C, ArgTypes). + filter_match_fail([Clause] = Cls) -> Body = cerl:clause_body(Clause), case cerl:type(Body) of @@ -1086,7 +1078,7 @@ get_bif_constr({erlang, Op, 2}, Dst, Args = [Arg1, Arg2], _State) when Op =:= '+'; Op =:= '-'; Op =:= '*' -> ReturnType = ?mk_fun_var(fun(Map) -> TmpArgTypes = lookup_type_list(Args, Map), - erl_bif_types:type(erlang, Op, 2, TmpArgTypes) + bif_return(erlang, Op, 2, TmpArgTypes) end, Args), ArgFun = fun(A, Pos) -> @@ -1128,8 +1120,8 @@ get_bif_constr({erlang, Op, 2}, Dst, [Arg1, Arg2] = Args, _State) fun(LocalArg1, LocalArg2, LocalOp) -> fun(Map) -> DstType = lookup_type(Dst, Map), - IsTrue = t_is_atom(true, DstType), - IsFalse = t_is_atom(false, DstType), + IsTrue = t_is_any_atom(true, DstType), + IsFalse = t_is_any_atom(false, DstType), case IsTrue orelse IsFalse of true -> Arg1Type = lookup_type(LocalArg1, Map), @@ -1176,7 +1168,7 @@ get_bif_constr({erlang, Op, 2}, Dst, [Arg1, Arg2] = Args, _State) Arg2Var = ?mk_fun_var(Arg2Fun, DstArgs), DstVar = ?mk_fun_var(fun(Map) -> TmpArgTypes = lookup_type_list(Args, Map), - erl_bif_types:type(erlang, Op, 2, TmpArgTypes) + bif_return(erlang, Op, 2, TmpArgTypes) end, Args), mk_conj_constraint_list([mk_constraint(Dst, sub, DstVar), mk_constraint(Arg1, sub, Arg1Var), @@ -1218,7 +1210,7 @@ get_bif_constr({erlang, '++', 2}, Dst, [Hd, Tl] = Args, _State) -> ArgTypes = erl_bif_types:arg_types(erlang, '++', 2), ReturnType = ?mk_fun_var(fun(Map) -> TmpArgTypes = lookup_type_list(Args, Map), - erl_bif_types:type(erlang, '++', 2, TmpArgTypes) + bif_return(erlang, '++', 2, TmpArgTypes) end, Args), Cs = mk_constraints(Args, sub, ArgTypes), mk_conj_constraint_list([mk_constraint(Dst, sub, ReturnType), @@ -1240,7 +1232,7 @@ get_bif_constr({erlang, is_function, 1}, Dst, [Arg], State) -> get_bif_constr({erlang, is_function, 2}, Dst, [Fun, Arity], _State) -> ArgFun = fun(Map) -> DstType = lookup_type(Dst, Map), - case t_is_atom(true, DstType) of + case t_is_any_atom(true, DstType) of true -> ArityType = lookup_type(Arity, Map), case t_number_vals(ArityType) of @@ -1268,7 +1260,7 @@ get_bif_constr({erlang, is_reference, 1}, Dst, [Arg], State) -> get_bif_test_constr(Dst, Arg, t_reference(), State); get_bif_constr({erlang, is_record, 2}, Dst, [Var, Tag] = Args, _State) -> ArgFun = fun(Map) -> - case t_is_atom(true, lookup_type(Dst, Map)) of + case t_is_any_atom(true, lookup_type(Dst, Map)) of true -> t_tuple(); false -> t_any() end @@ -1276,7 +1268,7 @@ get_bif_constr({erlang, is_record, 2}, Dst, [Var, Tag] = Args, _State) -> ArgV = ?mk_fun_var(ArgFun, [Dst]), DstFun = fun(Map) -> TmpArgTypes = lookup_type_list(Args, Map), - erl_bif_types:type(erlang, is_record, 2, TmpArgTypes) + bif_return(erlang, is_record, 2, TmpArgTypes) end, DstV = ?mk_fun_var(DstFun, Args), mk_conj_constraint_list([mk_constraint(Dst, sub, DstV), @@ -1285,10 +1277,9 @@ get_bif_constr({erlang, is_record, 2}, Dst, [Var, Tag] = Args, _State) -> 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 + case t_is_any_atom(true, lookup_type(Dst, Map)) of true -> ArityType = lookup_type(Arity, Map), case t_is_integer(ArityType) of @@ -1304,10 +1295,7 @@ get_bif_constr({erlang, is_record, 3}, Dst, [Var, Tag, Arity] = Args, State) -> [TagVal] -> case lookup_record(Records, TagVal, ArityVal - 1) of {ok, Type} -> - case t_opaque_match_record(Type, AllOpaques) of - [Opaque] -> Opaque; - _ -> Type - end; + Type; error -> GenRecord end; _ -> GenRecord @@ -1323,38 +1311,9 @@ get_bif_constr({erlang, is_record, 3}, Dst, [Var, Tag, Arity] = Args, State) -> end, ArgV = ?mk_fun_var(ArgFun, [Tag, Arity, Dst]), DstFun = fun(Map) -> - [TmpVar, TmpTag, TmpArity] = TmpArgTypes = lookup_type_list(Args, Map), - TmpArgTypes2 = - case lists:member(TmpVar, AllOpaques) of - true -> - case t_is_integer(TmpArity) of - true -> - case t_number_vals(TmpArity) of - [TmpArityVal] -> - case t_is_atom(TmpTag) of - true -> - case t_atom_vals(TmpTag) of - [TmpTagVal] -> - case lookup_record(Records, TmpTagVal, - TmpArityVal - 1) of - {ok, TmpType} -> - case t_is_none(t_inf(TmpType, TmpVar, opaque)) of - true -> TmpArgTypes; - false -> [TmpType, TmpTag, TmpArity] - end; - error -> TmpArgTypes - end; - _ -> TmpArgTypes - end; - false -> TmpArgTypes - end; - _ -> TmpArgTypes - end; - false -> TmpArgTypes - end; - false -> TmpArgTypes - end, - erl_bif_types:type(erlang, is_record, 3, TmpArgTypes2) + [TmpVar, TmpTag, TmpArity] = lookup_type_list(Args, Map), + TmpArgTypes = [TmpVar,TmpTag,TmpArity], + bif_return(erlang, is_record, 3, TmpArgTypes) end, DstV = ?mk_fun_var(DstFun, Args), mk_conj_constraint_list([mk_constraint(Dst, sub, DstV), @@ -1369,12 +1328,14 @@ get_bif_constr({erlang, 'and', 2}, Dst, [Arg1, Arg2] = Args, _State) -> ArgFun = fun(Var) -> fun(Map) -> DstType = lookup_type(Dst, Map), - case t_is_atom(true, DstType) of + case t_is_any_atom(true, DstType) of true -> True; false -> - case t_is_atom(false, DstType) of + case t_is_any_atom(false, DstType) of true -> - case t_is_atom(true, lookup_type(Var, Map)) of + case + t_is_any_atom(true, lookup_type(Var, Map)) + of true -> False; false -> t_boolean() end; @@ -1386,15 +1347,15 @@ get_bif_constr({erlang, 'and', 2}, Dst, [Arg1, Arg2] = Args, _State) -> end, DstFun = fun(Map) -> Arg1Type = lookup_type(Arg1, Map), - case t_is_atom(false, Arg1Type) of + case t_is_any_atom(false, Arg1Type) of true -> False; false -> Arg2Type = lookup_type(Arg2, Map), - case t_is_atom(false, Arg2Type) of + case t_is_any_atom(false, Arg2Type) of true -> False; false -> - case (t_is_atom(true, Arg1Type) - andalso t_is_atom(true, Arg2Type)) of + case (t_is_any_atom(true, Arg1Type) + andalso t_is_any_atom(true, Arg2Type)) of true -> True; false -> t_boolean() end @@ -1413,12 +1374,14 @@ get_bif_constr({erlang, 'or', 2}, Dst, [Arg1, Arg2] = Args, _State) -> ArgFun = fun(Var) -> fun(Map) -> DstType = lookup_type(Dst, Map), - case t_is_atom(false, DstType) of + case t_is_any_atom(false, DstType) of true -> False; false -> - case t_is_atom(true, DstType) of + case t_is_any_atom(true, DstType) of true -> - case t_is_atom(false, lookup_type(Var, Map)) of + case + t_is_any_atom(false, lookup_type(Var, Map)) + of true -> True; false -> t_boolean() end; @@ -1430,15 +1393,15 @@ get_bif_constr({erlang, 'or', 2}, Dst, [Arg1, Arg2] = Args, _State) -> end, DstFun = fun(Map) -> Arg1Type = lookup_type(Arg1, Map), - case t_is_atom(true, Arg1Type) of + case t_is_any_atom(true, Arg1Type) of true -> True; false -> Arg2Type = lookup_type(Arg2, Map), - case t_is_atom(true, Arg2Type) of + case t_is_any_atom(true, Arg2Type) of true -> True; false -> - case (t_is_atom(false, Arg1Type) - andalso t_is_atom(false, Arg2Type)) of + case (t_is_any_atom(false, Arg1Type) + andalso t_is_any_atom(false, Arg2Type)) of true -> False; false -> t_boolean() end @@ -1465,10 +1428,10 @@ get_bif_constr({erlang, 'not', 1}, Dst, [Arg] = Args, _State) -> Fun = fun(Var) -> fun(Map) -> Type = lookup_type(Var, Map), - case t_is_atom(true, Type) of + case t_is_any_atom(true, Type) of true -> False; false -> - case t_is_atom(false, Type) of + case t_is_any_atom(false, Type) of true -> True; false -> t_boolean() end @@ -1485,10 +1448,10 @@ get_bif_constr({erlang, '=:=', 2}, Dst, [Arg1, Arg2] = Args, _State) -> fun(Map) -> DstType = lookup_type(Dst, Map), OtherVarType = lookup_type(OtherVar, Map), - case t_is_atom(true, DstType) of + case t_is_any_atom(true, DstType) of true -> OtherVarType; false -> - case t_is_atom(false, DstType) of + case t_is_any_atom(false, DstType) of true -> case is_singleton_type(OtherVarType) of true -> t_subtract(lookup_type(Self, Map), OtherVarType); @@ -1518,7 +1481,7 @@ get_bif_constr({erlang, '=:=', 2}, Dst, [Arg1, Arg2] = Args, _State) -> get_bif_constr({erlang, '==', 2}, Dst, [Arg1, Arg2] = Args, _State) -> DstFun = fun(Map) -> TmpArgTypes = lookup_type_list(Args, Map), - erl_bif_types:type(erlang, '==', 2, TmpArgTypes) + bif_return(erlang, '==', 2, TmpArgTypes) end, ArgFun = fun(Var, Self) -> @@ -1527,16 +1490,16 @@ get_bif_constr({erlang, '==', 2}, Dst, [Arg1, Arg2] = Args, _State) -> DstType = lookup_type(Dst, Map), case is_singleton_non_number_type(VarType) of true -> - case t_is_atom(true, DstType) of + case t_is_any_atom(true, DstType) of true -> VarType; false -> - case t_is_atom(false, DstType) of + case t_is_any_atom(false, DstType) of true -> t_subtract(lookup_type(Self, Map), VarType); false -> t_any() end end; false -> - case t_is_atom(true, DstType) of + case t_is_any_atom(true, DstType) of true -> case t_is_number(VarType) of true -> t_number(); @@ -1560,18 +1523,14 @@ get_bif_constr({erlang, '==', 2}, Dst, [Arg1, Arg2] = Args, _State) -> mk_constraint(Arg1, sub, ArgV1), mk_constraint(Arg2, sub, ArgV2)]); get_bif_constr({erlang, element, 2} = _BIF, Dst, Args, - #state{cs = Constrs, opaques = Opaques}) -> + #state{cs = Constrs}) -> GenType = erl_bif_types:type(erlang, element, 2), case t_is_none(GenType) of true -> ?debug("Bif: ~w failed\n", [_BIF]), throw(error); false -> Fun = fun(Map) -> - [I, T] = ATs = lookup_type_list(Args, Map), - ATs2 = case lists:member(T, Opaques) of - true -> [I, erl_types:t_opaque_structure(T)]; - false -> ATs - end, - erl_bif_types:type(erlang, element, 2, ATs2) + ATs2 = lookup_type_list(Args, Map), + bif_return(erlang, element, 2, ATs2) end, ReturnType = ?mk_fun_var(Fun, Args), ArgTypes = erl_bif_types:arg_types(erlang, element, 2), @@ -1583,22 +1542,14 @@ get_bif_constr({erlang, element, 2} = _BIF, Dst, Args, end, mk_conj_constraint_list([mk_constraint(Dst, sub, ReturnType)|NewCs]) end; -get_bif_constr({M, F, A} = _BIF, Dst, Args, State) -> +get_bif_constr({M, F, A} = _BIF, Dst, Args, _State) -> GenType = erl_bif_types:type(M, F, A), - Opaques = State#state.opaques, case t_is_none(GenType) of true -> ?debug("Bif: ~w failed\n", [_BIF]), throw(error); false -> - UnopaqueFun = - fun(T) -> case lists:member(T, Opaques) of - true -> erl_types:t_unopaque(T, [T]); - false -> T - end - end, ReturnType = ?mk_fun_var(fun(Map) -> - TmpArgTypes0 = lookup_type_list(Args, Map), - TmpArgTypes = [UnopaqueFun(T) || T<- TmpArgTypes0], - erl_bif_types:type(M, F, A, TmpArgTypes) + TmpArgTypes = lookup_type_list(Args, Map), + bif_return(M, F, A, TmpArgTypes) end, Args), case erl_bif_types:is_known(M, F, A) of false -> @@ -1616,12 +1567,12 @@ get_bif_constr({M, F, A} = _BIF, Dst, Args, State) -> end. eval_inv_arith('+', _Pos, Dst, Arg) -> - erl_bif_types:type(erlang, '-', 2, [Dst, Arg]); + bif_return(erlang, '-', 2, [Dst, Arg]); eval_inv_arith('*', _Pos, Dst, Arg) -> case t_number_vals(Arg) of [0] -> t_integer(); _ -> - TmpRet = erl_bif_types:type(erlang, 'div', 2, [Dst, Arg]), + TmpRet = bif_return(erlang, 'div', 2, [Dst, Arg]), Zero = t_from_term(0), %% If 0 is not part of the result, it cannot be part of the argument. case t_is_subtype(Zero, Dst) of @@ -1630,9 +1581,9 @@ eval_inv_arith('*', _Pos, Dst, Arg) -> end end; eval_inv_arith('-', 1, Dst, Arg) -> - erl_bif_types:type(erlang, '-', 2, [Arg, Dst]); + bif_return(erlang, '-', 2, [Arg, Dst]); eval_inv_arith('-', 2, Dst, Arg) -> - erl_bif_types:type(erlang, '+', 2, [Arg, Dst]). + bif_return(erlang, '+', 2, [Arg, Dst]). range_inc(neg_inf) -> neg_inf; range_inc(pos_inf) -> pos_inf; @@ -1642,33 +1593,20 @@ range_dec(neg_inf) -> neg_inf; range_dec(pos_inf) -> pos_inf; range_dec(Int) when is_integer(Int) -> Int - 1. -get_bif_test_constr(Dst, Arg, Type, State) -> +get_bif_test_constr(Dst, Arg, Type, _State) -> ArgFun = fun(Map) -> DstType = lookup_type(Dst, Map), - case t_is_atom(true, DstType) of + case t_is_any_atom(true, DstType) of true -> Type; false -> t_any() 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, Opaques) of - true -> - OpaqueStruct = erl_types:t_opaque_structure(ArgType), - case t_is_none(t_inf(OpaqueStruct, Type)) of - true -> t_from_term(false); - false -> - case t_is_subtype(ArgType, Type) of - true -> t_from_term(true); - false -> t_boolean() - end - end; - false -> t_from_term(false) - end; + t_from_term(false); false -> case t_is_subtype(ArgType, Type) of true -> t_from_term(true); @@ -1784,7 +1722,6 @@ minimize_state(#state{ fun_arities = FunArities, self_rec = SelfRec, prop_types = {d, PropTypes}, - opaques = Opaques, solvers = Solvers }) -> Opts = [{read_concurrency, true}], @@ -1798,7 +1735,6 @@ minimize_state(#state{ fun_arities = FunArities, self_rec = SelfRec, prop_types = {e, ETSPropTypes}, - opaques = Opaques, solvers = Solvers }. @@ -1956,8 +1892,7 @@ v2_solve_ref(Fun, Map, State) -> {ok, NewMap}. v2_solve(#constraint{}=C, Map, V2State) -> - State = V2State#v2_state.state, - case solve_one_c(C, Map, State#state.opaques) of + case solve_one_c(C, Map) of error -> report_failed_constraint(C, Map), {error, V2State}; @@ -2031,7 +1966,7 @@ v2_solve_self_recursive(Cs, Map, Id, RecType0, V2State0) -> {ok, NewMap, V2State, U} -> pp_map("recursive finished", NewMap), NewRecType = unsafe_lookup_type(Id, NewMap), - case t_is_equal(NewRecType, RecType0) of + case is_equal(NewRecType, RecType0) of true -> {NewMap2, U1} = enter_var_type(RecVar, NewRecType, NewMap), {ok, NewMap2, V2State, lists:umerge(U, U1)}; @@ -2397,7 +2332,7 @@ solve_self_recursive(Cs, Map, MapDict, Id, RecType0, State) -> {ok, NewMapDict, NewMap} -> pp_map("NewMap", NewMap), NewRecType = unsafe_lookup_type(Id, NewMap), - case t_is_equal(NewRecType, RecType0) of + case is_equal(NewRecType, RecType0) of true -> {ok, NewMapDict, enter_type(RecVar, NewRecType, NewMap)}; false -> @@ -2447,7 +2382,7 @@ solve_cs([#constraint_list{} = C|Tail], Map, MapDict, State) -> {error, _NewMapDict} = Error -> Error end; solve_cs([#constraint{} = C|Tail], Map, MapDict, State) -> - case solve_one_c(C, Map, State#state.opaques) of + case solve_one_c(C, Map) of error -> report_failed_constraint(C, Map), {error, MapDict}; @@ -2457,10 +2392,10 @@ solve_cs([#constraint{} = C|Tail], Map, MapDict, State) -> solve_cs([], Map, MapDict, _State) -> {ok, MapDict, Map}. -solve_one_c(#constraint{lhs = Lhs, rhs = Rhs, op = Op}, Map, Opaques) -> +solve_one_c(#constraint{lhs = Lhs, rhs = Rhs, op = Op}, Map) -> LhsType = lookup_type(Lhs, Map), RhsType = lookup_type(Rhs, Map), - Inf = t_inf(LhsType, RhsType, opaque), + Inf = t_inf(LhsType, RhsType), ?debug("Solving: ~s :: ~s ~w ~s :: ~s\n\tInf: ~s\n", [format_type(Lhs), format_type(LhsType), Op, format_type(Rhs), format_type(RhsType), format_type(Inf)]), @@ -2468,12 +2403,12 @@ solve_one_c(#constraint{lhs = Lhs, rhs = Rhs, op = Op}, Map, Opaques) -> true -> error; false -> case Op of - sub -> solve_subtype(Lhs, Inf, Map, Opaques); + sub -> solve_subtype(Lhs, Inf, Map); eq -> - case solve_subtype(Lhs, Inf, Map, Opaques) of + case solve_subtype(Lhs, Inf, Map) of error -> error; {ok, {Map1, U1}} -> - case solve_subtype(Rhs, Inf, Map1, Opaques) of + case solve_subtype(Rhs, Inf, Map1) of error -> error; {ok, {Map2, U2}} -> {ok, {Map2, lists:umerge(U1, U2)}} end @@ -2481,7 +2416,7 @@ solve_one_c(#constraint{lhs = Lhs, rhs = Rhs, op = Op}, Map, Opaques) -> end end. -solve_subtype(Type, Inf, Map, Opaques) -> +solve_subtype(Type, Inf, Map) -> %% case cerl:is_literal(Type) of %% true -> %% case t_is_subtype(t_from_term(cerl:concrete(Type)), Inf) of @@ -2489,7 +2424,7 @@ solve_subtype(Type, Inf, Map, Opaques) -> %% false -> error %% end; %% false -> - try t_unify(Type, Inf, Opaques) of + try t_unify(Type, Inf) of {_, List} -> {ok, enter_type_list(List, Map)} catch throw:{mismatch, _T1, _T2} -> @@ -2540,7 +2475,7 @@ join_one_key(Key, [Map|Maps], Type) -> true -> Type; false -> NewType = lookup_type(Key, Map), - case t_is_equal(NewType, Type) of + case is_equal(NewType, Type) of true -> join_one_key(Key, Maps, Type); false -> join_one_key(Key, Maps, t_sup(NewType, Type)) end @@ -2555,7 +2490,7 @@ maps_are_equal(Map1, Map2, Deps) -> maps_are_equal_1(Map1, Map2, [H|Tail]) -> T1 = lookup_type(H, Map1), T2 = lookup_type(H, Map2), - case t_is_equal(T1, T2) of + case is_equal(T1, T2) of true -> maps_are_equal_1(Map1, Map2, Tail); false -> ?debug("~w: ~s =/= ~s\n", [H, format_type(T1), format_type(T2)]), @@ -2587,14 +2522,20 @@ prune_keys(Map1, Map2, Deps) -> enter_type(Key, Val, Map) when is_integer(Key) -> ?debug("Entering ~s :: ~s\n", [format_type(t_var(Key)), format_type(Val)]), - case t_is_any(Val) of + %% Keep any() in the map if it is opaque: + case is_equal(Val, t_any()) of true -> erase_type(Key, Map); false -> LimitedVal = t_limit(Val, ?INTERNAL_TYPE_LIMIT), + [?debug("LimitedVal ~s\n", [format_type(LimitedVal)]) || + not is_equal(LimitedVal, Val)], case dict:find(Key, Map) of - {ok, LimitedVal} -> Map; - {ok, _} -> map_store(Key, LimitedVal, Map); + {ok, Value} -> + case is_equal(Value, LimitedVal) of + true -> Map; + false -> map_store(Key, LimitedVal, Map) + end; error -> map_store(Key, LimitedVal, Map) end end; @@ -2681,7 +2622,10 @@ updated_vars_only(U, OldMap, NewMap) -> [V || V <- U, not is_same(V, OldMap, NewMap)]. is_same(Key, Map1, Map2) -> - t_is_equal(lookup_type(Key, Map1), lookup_type(Key, Map2)). + is_equal(lookup_type(Key, Map1), lookup_type(Key, Map2)). + +is_equal(Type1, Type2) -> + t_is_equal(Type1, Type2). pp_map(_S, _Map) -> ?debug("\t~s: ~p\n", @@ -2716,11 +2660,6 @@ new_state(SCC0, NextLabel, CallGraph, Plt, PropTypes, Solvers) -> state__set_rec_dict(State, RecDict) -> State#state{records = RecDict}. -state__set_opaques(#state{records = RecDict} = State, {M, _F, _A}) -> - Opaques = - erl_types:module_builtin_opaques(M) ++ t_opaque_from_records(RecDict), - State#state{opaques = Opaques, module = M}. - state__set_in_match(State, Bool) -> State#state{in_match = Bool}. @@ -2760,7 +2699,8 @@ state__lookup_undef_var(Tree, #state{callgraph = CG, plt = Plt}) -> {ok, MFA} -> case dialyzer_plt:lookup(Plt, MFA) of none -> error; - {value, {RetType, ArgTypes}} -> {ok, t_fun(ArgTypes, RetType)} + {value, {RetType, ArgTypes}} -> + {ok, t_fun(ArgTypes, RetType)} end end. @@ -2897,7 +2837,7 @@ state__get_cs(Var, #state{cmap = {d, Dict}}) -> dict:fetch(Var, Dict). state__is_self_rec(Fun, #state{self_rec = SelfRec}) -> - Fun =:= SelfRec. + not (SelfRec =:= 'false') andalso is_equal(Fun, SelfRec). state__store_funs(Vars0, Funs0, #state{fun_map = Map} = State) -> debug_make_name_map(Vars0, Funs0), @@ -2923,7 +2863,9 @@ state__finalize(State) -> %% %% ============================================================================ --spec mk_constraint(erl_types:erl_type(), constr_op(), fvar_or_type()) -> #constraint{}. +-spec mk_constraint(erl_types:erl_type(), + constr_op(), + fvar_or_type()) -> #constraint{}. mk_constraint(Lhs, Op, Rhs) -> case t_is_any(Lhs) orelse constraint_opnd_is_any(Rhs) of @@ -2934,9 +2876,9 @@ mk_constraint(Lhs, Op, Rhs) -> case Deps =:= [] of true -> %% This constraint is constant. Solve it immediately. - case solve_one_c(C, map_new(), []) of + case solve_one_c(C, map_new()) of error -> throw(error); - _ -> + _R -> %% This is always true, keep it anyway for logistic reasons C end; @@ -2944,10 +2886,13 @@ mk_constraint(Lhs, Op, Rhs) -> C end; true -> - C = mk_constraint_1(t_any(), Op, t_any()), - C#constraint{deps = []} + mk_constraint_any(Op) end. +mk_constraint_any(Op) -> + C = mk_constraint_1(t_any(), Op, t_any()), + C#constraint{deps = []}. + %% the following function is used so that we do not call %% erl_types:t_is_any/1 with a term other than an erl_type() -spec constraint_opnd_is_any(fvar_or_type()) -> boolean(). @@ -3002,7 +2947,8 @@ mk_constraint_1(Lhs, Op, Rhs) -> #constraint{lhs = Lhs, op = Op, rhs = Rhs}. mk_constraints([Lhs|LhsTail], Op, [Rhs|RhsTail]) -> - [mk_constraint(Lhs, Op, Rhs)|mk_constraints(LhsTail, Op, RhsTail)]; + [mk_constraint(Lhs, Op, Rhs) | + mk_constraints(LhsTail, Op, RhsTail)]; mk_constraints([], _Op, []) -> []. @@ -3017,7 +2963,7 @@ mk_constraint_list(Type, List) -> Deps = calculate_deps(List2), case Deps =:= [] of true -> #constraint_list{type = conj, - list = [mk_constraint(t_any(), eq, t_any())], + list = [mk_constraint_any(eq)], deps = []}; false -> #constraint_list{type = Type, list = List2, deps = Deps} end. @@ -3236,6 +3182,9 @@ calculate_masks([], _I, L) -> %% %% ============================================================================ +bif_return(M, F, A, Xs) -> + erl_bif_types:type(M, F, A, Xs). + is_singleton_non_number_type(Type) -> case t_is_number(Type) of true -> false; @@ -3265,7 +3214,7 @@ is_singleton_type(Type) -> find_element(Args, Cs) -> [Pos, Tuple] = Args, - case erl_types:t_is_number(Pos) of + case t_is_number(Pos) of true -> case erl_types:t_number_vals(Pos) of 'unknown' -> 'unknown'; @@ -3301,8 +3250,10 @@ 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]])}; + RecType = + t_tuple([t_from_term(Tag)| + [FieldType || {_FieldName, FieldType} <- Fields]]), + {ok, RecType}; error -> error end. |