diff options
Diffstat (limited to 'lib/dialyzer/src/dialyzer_dataflow.erl')
| -rw-r--r-- | lib/dialyzer/src/dialyzer_dataflow.erl | 1157 |
1 files changed, 620 insertions, 537 deletions
diff --git a/lib/dialyzer/src/dialyzer_dataflow.erl b/lib/dialyzer/src/dialyzer_dataflow.erl index 6956850f1a..692684cd99 100644 --- a/lib/dialyzer/src/dialyzer_dataflow.erl +++ b/lib/dialyzer/src/dialyzer_dataflow.erl @@ -2,7 +2,7 @@ %%-------------------------------------------------------------------- %% %CopyrightBegin% %% -%% Copyright Ericsson AB 2006-2012. 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 @@ -41,27 +41,37 @@ -include("dialyzer.hrl"). +%%-import(helper, %% 'helper' could be any module doing sanity checks... -import(erl_types, - [any_none/1, t_any/0, t_atom/0, t_atom/1, t_atom_vals/1, + [t_inf/2, t_inf/3, t_inf_lists/2, t_inf_lists/3, + t_inf_lists/3, t_is_equal/2, t_is_subtype/2, t_subtract/2, + t_sup/1, t_sup/2]). + +-import(erl_types, + [any_none/1, t_any/0, t_atom/0, t_atom/1, t_atom_vals/1, t_atom_vals/2, t_binary/0, t_boolean/0, t_bitstr/0, t_bitstr/2, t_bitstr_concat/1, t_bitstr_match/2, - t_cons/0, t_cons/2, t_cons_hd/1, t_cons_tl/1, t_contains_opaque/1, + t_cons/0, t_cons/2, t_cons_hd/2, t_cons_tl/2, + t_contains_opaque/2, t_find_opaque_mismatch/2, 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_inf/2, t_inf/3, t_inf_lists/2, t_inf_lists/3, t_inf_lists_masked/3, - t_integer/0, t_integers/1, - t_is_any/1, t_is_atom/1, t_is_atom/2, t_is_boolean/1, t_is_equal/2, - t_is_integer/1, t_is_nil/1, t_is_none/1, t_is_none_or_unit/1, - t_is_number/1, t_is_reference/1, t_is_pid/1, t_is_port/1, - t_is_subtype/2, t_is_unit/1, - t_limit/2, t_list/0, t_maybe_improper_list/0, t_module/0, - t_none/0, t_non_neg_integer/0, t_number/0, t_number_vals/1, - t_opaque_match_atom/2, t_opaque_match_record/2, - t_opaque_matching_structure/2, + t_fun/0, t_fun/2, t_fun_args/1, t_fun_args/2, t_fun_range/1, + t_fun_range/2, t_integer/0, t_integers/1, + t_is_any/1, t_is_atom/1, t_is_atom/2, t_is_any_atom/3, + t_is_boolean/2, + t_is_integer/2, t_is_list/1, + t_is_nil/2, t_is_none/1, t_is_none_or_unit/1, + t_is_number/2, t_is_reference/2, t_is_pid/2, t_is_port/2, + t_is_unit/1, + t_limit/2, t_list/0, t_list_elements/2, + t_maybe_improper_list/0, t_module/0, + t_none/0, t_non_neg_integer/0, t_number/0, t_number_vals/2, t_pid/0, t_port/0, t_product/1, t_reference/0, - t_sup/1, t_sup/2, t_subtract/2, t_to_string/2, t_to_tlist/1, - t_tuple/0, t_tuple/1, t_tuple_args/1, t_tuple_subtypes/1, - t_unit/0, t_unopaque/1]). + t_to_string/2, t_to_tlist/1, + t_tuple/0, t_tuple/1, t_tuple_args/1, t_tuple_args/2, + t_tuple_subtypes/2, + t_unit/0, t_unopaque/2, + t_map/1 + ]). %%-define(DEBUG, true). %%-define(DEBUG_PP, true). @@ -76,39 +86,53 @@ %%-------------------------------------------------------------------- +-type type() :: erl_types:erl_type(). +-type types() :: erl_types:type_table(). + -define(no_arg, no_arg). -define(TYPE_LIMIT, 3). -record(state, {callgraph :: dialyzer_callgraph:callgraph(), - envs :: dict(), - fun_tab :: dict(), + envs :: env_tab(), + fun_tab :: fun_tab(), plt :: dialyzer_plt:plt(), - opaques :: [erl_types:erl_type()], + opaques :: [type()], races = dialyzer_races:new() :: dialyzer_races:races(), - records = dict:new() :: dict(), - tree_map :: dict(), + records = dict:new() :: types(), + tree_map :: dict:dict(label(), cerl:cerl()), warning_mode = false :: boolean(), warnings = [] :: [dial_warning()], - work :: {[_], [_], set()}, + work :: {[_], [_], sets:set()}, module :: module() }). --record(map, {dict = dict:new() :: dict(), - subst = dict:new() :: dict(), +-record(map, {dict = dict:new() :: type_tab(), + subst = dict:new() :: subst_tab(), modified = [] :: [Key :: term()], modified_stack = [] :: [{[Key :: term()],reference()}], ref = undefined :: reference() | undefined}). +-type nowarn() :: dialyzer_analysis_callgraph:no_warn_unused(). +-type env_tab() :: dict:dict(label(), #map{}). +-type fun_entry() :: {Args :: [type()], RetType :: type()}. +-type fun_tab() :: dict:dict('top' | label(), + {'not_handled', fun_entry()} | fun_entry()). +-type key() :: label() | cerl:cerl(). +-type type_tab() :: dict:dict(key(), type()). +-type subst_tab() :: dict:dict(key(), cerl:cerl()). + %% Exported Types -opaque state() :: #state{}. %%-------------------------------------------------------------------- +-type fun_types() :: dict:dict(label(), type()). + -spec get_warnings(cerl:c_module(), dialyzer_plt:plt(), - dialyzer_callgraph:callgraph(), dict(), set()) -> - {[dial_warning()], dict()}. + dialyzer_callgraph:callgraph(), types(), nowarn()) -> + {[dial_warning()], fun_types()}. get_warnings(Tree, Plt, Callgraph, Records, NoWarnUnused) -> State1 = analyze_module(Tree, Plt, Callgraph, Records, true), @@ -119,7 +143,8 @@ get_warnings(Tree, Plt, Callgraph, Records, NoWarnUnused) -> {State4#state.warnings, state__all_fun_types(State4)}. -spec get_fun_types(cerl:c_module(), dialyzer_plt:plt(), - dialyzer_callgraph:callgraph(), dict()) -> dict(). + dialyzer_callgraph:callgraph(), + types()) -> fun_types(). get_fun_types(Tree, Plt, Callgraph, Records) -> State = analyze_module(Tree, Plt, Callgraph, Records, false), @@ -204,7 +229,7 @@ analyze_loop(State) -> traverse(Tree, Map, State) -> ?debug("Handling ~p\n", [cerl:type(Tree)]), - %%debug_pp_map(Map), + %% debug_pp_map(Map), case cerl:type(Tree) of alias -> %% This only happens when checking for illegal record patterns @@ -256,12 +281,7 @@ traverse(Tree, Map, State) -> case cerl:unfold_literal(Tree) of Tree -> Type = literal_type(Tree), - NewType = - case erl_types:t_opaque_match_atom(Type, State#state.opaques) of - [Opaque] -> Opaque; - _ -> Type - end, - {State, Map, NewType}; + {State, Map, Type}; NewTree -> traverse(NewTree, Map, State) end; module -> @@ -286,8 +306,12 @@ traverse(Tree, Map, State) -> SMA; false -> State2 = - case (t_is_any(ArgType) orelse t_is_simple(ArgType) - orelse is_call_to_send(Arg)) of + case + t_is_any(ArgType) + orelse t_is_simple(ArgType, State) + orelse is_call_to_send(Arg) + orelse is_lc_simple_list(Arg, ArgType, State) + of true -> % do not warn in these cases State1; false -> @@ -301,6 +325,10 @@ traverse(Tree, Map, State) -> handle_try(Tree, Map, State); tuple -> handle_tuple(Tree, Map, State); + map -> + handle_map(Tree, Map, State); + map_pair -> + handle_map_pair(Tree, Map, State); values -> Elements = cerl:values_es(Tree), {State1, Map1, EsType} = traverse_list(Elements, Map, State), @@ -308,18 +336,10 @@ traverse(Tree, Map, State) -> {State1, Map1, Type}; var -> ?debug("Looking up unknown variable: ~p\n", [Tree]), - case state__lookup_type_for_rec_var(Tree, State) of + case state__lookup_type_for_letrec(Tree, State) of error -> LType = lookup_type(Tree, Map), - Opaques = State#state.opaques, - case t_opaque_match_record(LType, Opaques) of - [Opaque] -> {State, Map, Opaque}; - _ -> - case t_opaque_match_atom(LType, Opaques) of - [Opaque] -> {State, Map, Opaque}; - _ -> {State, Map, LType} - end - end; + {State, Map, LType}; {ok, Type} -> {State, Map, Type} end; Other -> @@ -367,7 +387,8 @@ handle_apply(Tree, Map, State) -> Tree, Msg), {State3, Map2, t_none()}; false -> - NewArgs = t_inf_lists(ArgTypes, t_fun_args(OpType1)), + NewArgs = t_inf_lists(ArgTypes, + t_fun_args(OpType1, 'universe')), case any_none(NewArgs) of true -> Msg = {fun_app_args, @@ -378,7 +399,7 @@ handle_apply(Tree, Map, State) -> {State3, enter_type(Op, OpType1, Map2), t_none()}; false -> Map3 = enter_type_lists(Args, NewArgs, Map2), - Range0 = t_fun_range(OpType1), + Range0 = t_fun_range(OpType1, 'universe'), Range = case t_is_unit(Range0) of true -> t_none(); @@ -423,83 +444,55 @@ handle_apply_or_call([{TypeOfApply, {Fun, Sig, Contr, LocalRet}}|Left], {M, F, A} = Fun, case erl_bif_types:is_known(M, F, A) of true -> - IsBIF = true, BArgs = erl_bif_types:arg_types(M, F, A), BRange = fun(FunArgs) -> - ArgPos = erl_bif_types:structure_inspecting_args(M, F, A), - NewFunArgs = - case ArgPos =:= [] of - true -> FunArgs; - false -> % some positions need to be un-opaqued - N = length(FunArgs), - PFs = lists:zip(lists:seq(1, N), FunArgs), - [case ordsets:is_element(P, ArgPos) of - true -> erl_types:t_unopaque(FArg, Opaques); - false -> FArg - end || {P, FArg} <- PFs] - end, - erl_bif_types:type(M, F, A, NewFunArgs) + erl_bif_types:type(M, F, A, FunArgs, Opaques) end, {BArgs, BRange}; - false -> IsBIF = false, GenSig + false -> + GenSig end; - local -> IsBIF = false, GenSig + local -> GenSig end, {SigArgs, SigRange} = - %% if there is hard-coded or contract information with opaque types, - %% the checking for possible type violations needs to take place w.r.t. - %% this information and not w.r.t. the structure-based success typing. - case prefer_opaque_types(CArgs, BifArgs) of - true -> {AnyArgs, t_any()}; % effectively forgets the success typing - false -> - case Sig of - {value, {SR, SA}} -> {SA, SR}; - none -> {AnyArgs, t_any()} - end + case Sig of + {value, {SR, SA}} -> {SA, SR}; + none -> {AnyArgs, t_any()} end, - ArgModeMask = [case lists:member(Arg, Opaques) of - true -> opaque; - false -> structured - end || Arg <- ArgTypes], - NewArgsSig = t_inf_lists_masked(SigArgs, ArgTypes, ArgModeMask), - NewArgsContract = t_inf_lists_masked(CArgs, ArgTypes, ArgModeMask), - NewArgsBif = t_inf_lists_masked(BifArgs, ArgTypes, ArgModeMask), - NewArgTypes0 = t_inf_lists_masked(NewArgsSig, NewArgsContract, ArgModeMask), - NewArgTypes = t_inf_lists_masked(NewArgTypes0, NewArgsBif, ArgModeMask), - BifRet = BifRange(NewArgTypes), - {TmpArgTypes, TmpArgsContract} = - case (TypeOfApply =:= remote) andalso (not IsBIF) of - true -> - List1 = lists:zip(CArgs, NewArgTypes), - List2 = lists:zip(CArgs, NewArgsContract), - {[erl_types:t_unopaque_on_mismatch(T1, T2, Opaques) - || {T1, T2} <- List1], - [erl_types:t_unopaque_on_mismatch(T1, T2, Opaques) - || {T1, T2} <- List2]}; - false -> {NewArgTypes, NewArgsContract} - end, - ContrRet = CRange(TmpArgTypes), - RetMode = - case t_contains_opaque(ContrRet) orelse t_contains_opaque(BifRet) of - true -> opaque; - false -> structured - end, - RetWithoutContr = t_inf(SigRange, BifRet, RetMode), - RetWithoutLocal = t_inf(ContrRet, RetWithoutContr, RetMode), + ?debug("--------------------------------------------------------\n", []), - ?debug("Fun: ~p\n", [Fun]), - ?debug("Args: ~s\n", [erl_types:t_to_string(t_product(ArgTypes))]), + ?debug("Fun: ~p\n", [state__lookup_name(Fun, State)]), + ?debug("Module ~p\n", [State#state.module]), + ?debug("CArgs ~s\n", [erl_types:t_to_string(t_product(CArgs))]), + ?debug("ArgTypes ~s\n", [erl_types:t_to_string(t_product(ArgTypes))]), + ?debug("BifArgs ~p\n", [erl_types:t_to_string(t_product(BifArgs))]), + + NewArgsSig = t_inf_lists(SigArgs, ArgTypes, Opaques), + ?debug("SigArgs ~s\n", [erl_types:t_to_string(t_product(SigArgs))]), ?debug("NewArgsSig: ~s\n", [erl_types:t_to_string(t_product(NewArgsSig))]), + NewArgsContract = t_inf_lists(CArgs, ArgTypes, Opaques), ?debug("NewArgsContract: ~s\n", [erl_types:t_to_string(t_product(NewArgsContract))]), + NewArgsBif = t_inf_lists(BifArgs, ArgTypes, Opaques), ?debug("NewArgsBif: ~s\n", [erl_types:t_to_string(t_product(NewArgsBif))]), - ?debug("NewArgTypes: ~s\n", [erl_types:t_to_string(t_product(NewArgTypes))]), + NewArgTypes0 = t_inf_lists(NewArgsSig, NewArgsContract), + NewArgTypes = t_inf_lists(NewArgTypes0, NewArgsBif, Opaques), + ?debug("NewArgTypes ~s\n", [erl_types:t_to_string(t_product(NewArgTypes))]), + ?debug("\n", []), + + BifRet = BifRange(NewArgTypes), + ContrRet = CRange(NewArgTypes), + RetWithoutContr = t_inf(SigRange, BifRet), + RetWithoutLocal = t_inf(ContrRet, RetWithoutContr), + ?debug("RetWithoutContr: ~s\n",[erl_types:t_to_string(RetWithoutContr)]), ?debug("RetWithoutLocal: ~s\n", [erl_types:t_to_string(RetWithoutLocal)]), ?debug("BifRet: ~s\n", [erl_types:t_to_string(BifRange(NewArgTypes))]), - ?debug("ContrRet: ~s\n", [erl_types:t_to_string(CRange(TmpArgTypes))]), - ?debug("SigRet: ~s\n", [erl_types:t_to_string(SigRange)]), + ?debug("SigRange: ~s\n", [erl_types:t_to_string(SigRange)]), + ?debug("ContrRet: ~s\n", [erl_types:t_to_string(CRange(NewArgTypes))]), + ?debug("LocalRet: ~s\n", [erl_types:t_to_string(LocalRet)]), + State1 = case is_race_analysis_enabled(State) of true -> @@ -513,6 +506,9 @@ handle_apply_or_call([{TypeOfApply, {Fun, Sig, Contr, LocalRet}}|Left], FailedConj = any_none([RetWithoutLocal|NewArgTypes]), IsFailBif = t_is_none(BifRange(BifArgs)), IsFailSig = t_is_none(SigRange), + ?debug("FailedConj: ~p~n", [FailedConj]), + ?debug("IsFailBif: ~p~n", [IsFailBif]), + ?debug("IsFailSig: ~p~n", [IsFailSig]), State2 = case FailedConj andalso not (IsFailBif orelse IsFailSig) of true -> @@ -532,14 +528,14 @@ handle_apply_or_call([{TypeOfApply, {Fun, Sig, Contr, LocalRet}}|Left], false -> FailedSig = any_none(NewArgsSig), FailedContract = - any_none([CRange(TmpArgsContract)|NewArgsContract]), + any_none([CRange(NewArgsContract)|NewArgsContract]), FailedBif = any_none([BifRange(NewArgsBif)|NewArgsBif]), InfSig = t_inf(t_fun(SigArgs, SigRange), - t_fun(BifArgs, BifRange(BifArgs))), + t_fun(BifArgs, BifRange(BifArgs))), FailReason = apply_fail_reason(FailedSig, FailedBif, FailedContract), Msg = get_apply_fail_msg(Fun, Args, ArgTypes, NewArgTypes, InfSig, - Contr, CArgs, State1, FailReason), + Contr, CArgs, State1, FailReason, Opaques), WarnType = case Msg of {call, _} -> ?WARN_FAILING_CALL; {apply, _} -> ?WARN_FAILING_CALL; @@ -547,7 +543,8 @@ handle_apply_or_call([{TypeOfApply, {Fun, Sig, Contr, LocalRet}}|Left], {call_without_opaque, _} -> ?WARN_OPAQUE; {opaque_type_test, _} -> ?WARN_OPAQUE end, - state__add_warning(State1, WarnType, Tree, Msg) + Frc = {erlang, is_record, 3} =:= state__lookup_name(Fun, State), + state__add_warning(State1, WarnType, Tree, Msg, Frc) end; false -> State1 end, @@ -571,7 +568,7 @@ handle_apply_or_call([{TypeOfApply, {Fun, Sig, Contr, LocalRet}}|Left], TotalRet = case t_is_none(LocalRet) andalso t_is_unit(RetWithoutLocal) of true -> RetWithoutLocal; - false -> t_inf(RetWithoutLocal, LocalRet, opaque) + false -> t_inf(RetWithoutLocal, LocalRet) end, NewAccRet = t_sup(AccRet, TotalRet), ?debug("NewAccRet: ~s\n", [t_to_string(NewAccRet)]), @@ -590,7 +587,7 @@ apply_fail_reason(FailedSig, FailedBif, FailedContract) -> end. get_apply_fail_msg(Fun, Args, ArgTypes, NewArgTypes, - Sig, Contract, ContrArgs, State, FailReason) -> + Sig, Contract, ContrArgs, State, FailReason, Opaques) -> ArgStrings = format_args(Args, ArgTypes, State), ContractInfo = case Contract of @@ -599,44 +596,52 @@ get_apply_fail_msg(Fun, Args, ArgTypes, NewArgTypes, dialyzer_contracts:contract_to_string(C)}; none -> {false, none} end, - EnumArgTypes = - case NewArgTypes of - [] -> []; - _ -> lists:zip(lists:seq(1, length(NewArgTypes)), NewArgTypes) - end, + EnumArgTypes = lists:zip(lists:seq(1, length(NewArgTypes)), NewArgTypes), ArgNs = [Arg || {Arg, Type} <- EnumArgTypes, t_is_none(Type)], case state__lookup_name(Fun, State) of - {M, F, _A} -> - case is_opaque_type_test_problem(Fun, NewArgTypes, State) of - true -> - [Opaque] = NewArgTypes, - {opaque_type_test, [atom_to_list(F), erl_types:t_to_string(Opaque)]}; - false -> + {M, F, A} -> + case is_opaque_type_test_problem(Fun, Args, NewArgTypes, State) of + {yes, Arg, ArgType} -> + {opaque_type_test, [atom_to_list(F), ArgStrings, + format_arg(Arg), format_type(ArgType, State)]}; + no -> SigArgs = t_fun_args(Sig), - case is_opaque_related_problem(ArgNs, ArgTypes) of - true -> %% an opaque term is used where a structured term is expected - ExpectedArgs = - case FailReason of - only_sig -> SigArgs; - _ -> ContrArgs - end, - {call_with_opaque, [M, F, ArgStrings, ArgNs, ExpectedArgs]}; - false -> - case is_opaque_related_problem(ArgNs, SigArgs) orelse - is_opaque_related_problem(ArgNs, ContrArgs) of - true -> %% a structured term is used where an opaque is expected - ExpectedTriples = - case FailReason of - only_sig -> expected_arg_triples(ArgNs, SigArgs, State); - _ -> expected_arg_triples(ArgNs, ContrArgs, State) - end, - {call_without_opaque, [M, F, ArgStrings, ExpectedTriples]}; - false -> %% there is a structured term clash in some argument - {call, [M, F, ArgStrings, - ArgNs, FailReason, - format_sig_args(Sig, State), - format_type(t_fun_range(Sig), State), - ContractInfo]} + BadOpaque = + opaque_problems([SigArgs, ContrArgs], ArgTypes, Opaques, ArgNs), + %% In fact *both* 'call_with_opaque' and + %% 'call_without_opaque' are possible. + case lists:keyfind(decl, 1, BadOpaque) of + {decl, BadArgs} -> + %% a structured term is used where an opaque is expected + ExpectedTriples = + case FailReason of + only_sig -> expected_arg_triples(BadArgs, SigArgs, State); + _ -> expected_arg_triples(BadArgs, ContrArgs, State) + end, + {call_without_opaque, [M, F, ArgStrings, ExpectedTriples]}; + false -> + case lists:keyfind(use, 1, BadOpaque) of + {use, BadArgs} -> + %% an opaque term is used where a structured term is expected + ExpectedArgs = + case FailReason of + only_sig -> SigArgs; + _ -> ContrArgs + end, + {call_with_opaque, [M, F, ArgStrings, BadArgs, ExpectedArgs]}; + false -> + case + erl_bif_types:opaque_args(M, F, A, ArgTypes, Opaques) + of + [] -> %% there is a structured term clash in some argument + {call, [M, F, ArgStrings, + ArgNs, FailReason, + format_sig_args(Sig, State), + format_type(t_fun_range(Sig), State), + ContractInfo]}; + Ns -> + {call_with_opaque, [M, F, ArgStrings, Ns, ContrArgs]} + end end end end; @@ -648,31 +653,48 @@ get_apply_fail_msg(Fun, Args, ArgTypes, NewArgTypes, ContractInfo]} end. -%% returns 'true' if we are running with opaque on (not checked yet), -%% and there is either a contract or hard-coded type information with -%% opaque types -%% TODO: check that we are running with opaque types -%% TODO: check the return type also -prefer_opaque_types(CArgs, BifArgs) -> - t_contains_opaque(t_product(CArgs)) - orelse t_contains_opaque(t_product(BifArgs)). - -is_opaque_related_problem(ArgNs, ArgTypes) -> - Fun = fun (N) -> erl_types:t_contains_opaque(lists:nth(N, ArgTypes)) end, - ArgNs =/= [] andalso lists:all(Fun, ArgNs). - -is_opaque_type_test_problem(Fun, ArgTypes, State) -> +%% -> [{ElementI, [ArgN]}] where [ArgN] is a non-empty list of +%% arguments containing unknown opaque types and Element is 1 or 2. +opaque_problems(ContractOrSigList, ArgTypes, Opaques, ArgNs) -> + ArgElementList = find_unknown(ContractOrSigList, ArgTypes, Opaques, ArgNs), + F = fun(1) -> decl; (2) -> use end, + [{F(ElementI), lists:usort([ArgN || {ArgN, EI} <- ArgElementList, + EI =:= ElementI])} || + ElementI <- lists:usort([EI || {_, EI} <- ArgElementList])]. + +%% -> [{ArgN, ElementI}] where ElementI = 1 means there is an unknown +%% opaque type in argument ArgN of the the contract/signature, +%% and ElementI = 2 means that there is an unknown opaque type in +%% argument ArgN of the the (current) argument types. +find_unknown(ContractOrSigList, ArgTypes, Opaques, NoneArgNs) -> + ArgNs = lists:seq(1, length(ArgTypes)), + [{ArgN, ElementI} || + ContractOrSig <- ContractOrSigList, + {E1, E2, ArgN} <- lists:zip3(ContractOrSig, ArgTypes, ArgNs), + lists:member(ArgN, NoneArgNs), + ElementI <- erl_types:t_find_unknown_opaque(E1, E2, Opaques)]. + +is_opaque_type_test_problem(Fun, Args, ArgTypes, State) -> case Fun of {erlang, FN, 1} when FN =:= is_atom; FN =:= is_boolean; FN =:= is_binary; FN =:= is_bitstring; FN =:= is_float; FN =:= is_function; FN =:= is_integer; FN =:= is_list; FN =:= is_number; FN =:= is_pid; FN =:= is_port; - FN =:= is_reference; FN =:= is_tuple -> - [Type] = ArgTypes, - erl_types:t_is_opaque(Type) andalso - not lists:member(Type, State#state.opaques); - _ -> false + FN =:= is_reference; FN =:= is_tuple; + FN =:= is_map -> + type_test_opaque_arg(Args, ArgTypes, State#state.opaques); + {erlang, FN, 2} when FN =:= is_function -> + type_test_opaque_arg(Args, ArgTypes, State#state.opaques); + _ -> no + end. + +type_test_opaque_arg([], [], _Opaques) -> + no; +type_test_opaque_arg([Arg|Args], [ArgType|ArgTypes], Opaques) -> + case erl_types:t_has_opaque_subtype(ArgType, Opaques) of + true -> {yes, Arg, ArgType}; + false -> type_test_opaque_arg(Args, ArgTypes, Opaques) end. expected_arg_triples(ArgNs, ArgTypes, State) -> @@ -683,47 +705,56 @@ expected_arg_triples(ArgNs, ArgTypes, State) -> add_bif_warnings({erlang, Op, 2}, [T1, T2] = Ts, Tree, State) when Op =:= '=:='; Op =:= '==' -> - Type1 = erl_types:t_unopaque(T1, State#state.opaques), - Type2 = erl_types:t_unopaque(T2, State#state.opaques), - Inf = t_inf(T1, T2), - Inf1 = t_inf(Type1, Type2), - case t_is_none(Inf) andalso t_is_none(Inf1) andalso(not any_none(Ts)) - andalso (not is_int_float_eq_comp(T1, Op, T2)) of + Opaques = State#state.opaques, + Inf = t_inf(T1, T2, Opaques), + case + t_is_none(Inf) andalso (not any_none(Ts)) + andalso (not is_int_float_eq_comp(T1, Op, T2, Opaques)) + of true -> - Args = case erl_types:t_is_opaque(T1) of - true -> [format_type(T2, State), Op, format_type(T1, State)]; - false -> [format_type(T1, State), Op, format_type(T2, State)] - end, - case any_opaque(Ts) of - true -> - state__add_warning(State, ?WARN_OPAQUE, Tree, {opaque_eq, Args}); - false -> - state__add_warning(State, ?WARN_MATCHING, Tree, {exact_eq, Args}) + %% Give priority to opaque warning (as usual). + case erl_types:t_find_unknown_opaque(T1, T2, Opaques) of + [] -> + Args = comp_format_args([], T1, Op, T2, State), + state__add_warning(State, ?WARN_MATCHING, Tree, {exact_eq, Args}); + Ns -> + Args = comp_format_args(Ns, T1, Op, T2, State), + state__add_warning(State, ?WARN_OPAQUE, Tree, {opaque_eq, Args}) end; false -> State end; add_bif_warnings({erlang, Op, 2}, [T1, T2] = Ts, Tree, State) when Op =:= '=/='; Op =:= '/=' -> - Inf = t_inf(T1, T2), - case t_is_none(Inf) andalso (not any_none(Ts)) - andalso (not is_int_float_eq_comp(T1, Op, T2)) andalso any_opaque(Ts) of + Opaques = State#state.opaques, + case + (not any_none(Ts)) + andalso (not is_int_float_eq_comp(T1, Op, T2, Opaques)) + of true -> - Args = case erl_types:t_is_opaque(T1) of - true -> [format_type(T2, State), Op, format_type(T1, State)]; - false -> [format_type(T1, State), Op, format_type(T2, State)] - end, - state__add_warning(State, ?WARN_OPAQUE, Tree, {opaque_neq, Args}); + case erl_types:t_find_unknown_opaque(T1, T2, Opaques) of + [] -> State; + Ns -> + Args = comp_format_args(Ns, T1, Op, T2, State), + state__add_warning(State, ?WARN_OPAQUE, Tree, {opaque_neq, Args}) + end; false -> State end; add_bif_warnings(_, _, _, State) -> State. -is_int_float_eq_comp(T1, Op, T2) -> +is_int_float_eq_comp(T1, Op, T2, Opaques) -> (Op =:= '==' orelse Op =:= '/=') andalso - ((erl_types:t_is_float(T1) andalso erl_types:t_is_integer(T2)) orelse - (erl_types:t_is_integer(T1) andalso erl_types:t_is_float(T2))). + ((erl_types:t_is_float(T1, Opaques) + andalso t_is_integer(T2, Opaques)) orelse + (t_is_integer(T1, Opaques) + andalso erl_types:t_is_float(T2, Opaques))). + +comp_format_args([1|_], T1, Op, T2, State) -> + [format_type(T2, State), Op, format_type(T1, State)]; +comp_format_args(_, T1, Op, T2, State) -> + [format_type(T1, State), Op, format_type(T2, State)]. %%---------------------------------------- @@ -784,16 +815,27 @@ handle_bitstr(Tree, Map, State) -> {State3, Map2, t_none()}; false -> UnitVal = cerl:concrete(cerl:bitstr_unit(Tree)), - Type = - case t_number_vals(SizeType) of - [OneSize] -> t_bitstr(0, OneSize * UnitVal); - _ -> - MinSize = erl_types:number_min(SizeType), - t_bitstr(UnitVal, UnitVal * MinSize) - end, + Opaques = State2#state.opaques, + NumberVals = t_number_vals(SizeType, Opaques), + {State3, Type} = + case t_contains_opaque(SizeType, Opaques) of + true -> + Msg = {opaque_size, [format_type(SizeType, State2), + format_cerl(Size)]}, + {state__add_warning(State2, ?WARN_OPAQUE, Size, Msg), + t_none()}; + false -> + case NumberVals of + [OneSize] -> {State2, t_bitstr(0, OneSize * UnitVal)}; + unknown -> {State2, t_bitstr()}; + _ -> + MinSize = erl_types:number_min(SizeType, Opaques), + {State2, t_bitstr(UnitVal, UnitVal * MinSize)} + end + end, Map3 = enter_type_lists([Val, Size, Tree], [ValType, SizeType, Type], Map2), - {State2, Map3, Type} + {State3, Map3, Type} end end. @@ -805,34 +847,47 @@ handle_call(Tree, Map, State) -> Args = cerl:call_args(Tree), MFAList = [M, F|Args], {State1, Map1, [MType0, FType0|As]} = traverse_list(MFAList, Map, State), - %% Module and function names should be treated as *structured terms* - %% even if they happen to be identical to an atom (or tuple) which - %% is also involved in the definition of an opaque data type. - MType = t_inf(t_module(), t_unopaque(MType0)), - FType = t_inf(t_atom(), t_unopaque(FType0)), + Opaques = State#state.opaques, + MType = t_inf(t_module(), MType0, Opaques), + FType = t_inf(t_atom(), FType0, Opaques), Map2 = enter_type_lists([M, F], [MType, FType], Map1), + MOpaque = t_is_none(MType) andalso (not t_is_none(MType0)), + FOpaque = t_is_none(FType) andalso (not t_is_none(FType0)), case any_none([MType, FType|As]) of true -> State2 = - case t_is_none(MType) andalso (not t_is_none(MType0)) of - true -> % This is a problem we just detected; not a known one - MS = format_cerl(M), - Msg = {app_call, [MS, format_cerl(F), - format_args(Args, As, State1), - MS, format_type(t_module(), State1), - format_type(MType0, State1)]}, - state__add_warning(State1, ?WARN_FAILING_CALL, Tree, Msg); - false -> - case t_is_none(FType) andalso (not t_is_none(FType0)) of - true -> - FS = format_cerl(F), - Msg = {app_call, [format_cerl(M), FS, - format_args(Args, As, State1), - FS, format_type(t_atom(), State1), - format_type(FType0, State1)]}, - state__add_warning(State1, ?WARN_FAILING_CALL, Tree, Msg); - false -> State1 - end + if + MOpaque -> % This is a problem we just detected; not a known one + MS = format_cerl(M), + case t_is_none(t_inf(t_module(), MType0)) of + true -> + Msg = {app_call, [MS, format_cerl(F), + format_args(Args, As, State1), + MS, format_type(t_module(), State1), + format_type(MType0, State1)]}, + state__add_warning(State1, ?WARN_FAILING_CALL, Tree, Msg); + false -> + Msg = {opaque_call, [MS, format_cerl(F), + format_args(Args, As, State1), + MS, format_type(MType0, State1)]}, + state__add_warning(State1, ?WARN_FAILING_CALL, Tree, Msg) + end; + FOpaque -> + FS = format_cerl(F), + case t_is_none(t_inf(t_atom(), FType0)) of + true -> + Msg = {app_call, [format_cerl(M), FS, + format_args(Args, As, State1), + FS, format_type(t_atom(), State1), + format_type(FType0, State1)]}, + state__add_warning(State1, ?WARN_FAILING_CALL, Tree, Msg); + false -> + Msg = {opaque_call, [format_cerl(M), FS, + format_args(Args, As, State1), + FS, format_type(FType0, State1)]}, + state__add_warning(State1, ?WARN_FAILING_CALL, Tree, Msg) + end; + true -> State1 end, {State2, Map2, t_none()}; false -> @@ -874,7 +929,7 @@ handle_case(Tree, Map, State) -> handle_clauses(Clauses, Arg, ArgType, ArgType, State2, [], Map2, [], []), Map3 = join_maps_end(MapList, Map2), - debug_pp_map(Map2), + debug_pp_map(Map3), {State3, Map3, Type} end. @@ -886,7 +941,7 @@ handle_cons(Tree, Map, State) -> {State1, Map1, HdType} = traverse(Hd, Map, State), {State2, Map2, TlType} = traverse(Tl, Map1, State1), State3 = - case t_is_none(t_inf(TlType, t_list())) of + case t_is_none(t_inf(TlType, t_list(), State2#state.opaques)) of true -> Msg = {improper_list_constr, [format_type(TlType, State2)]}, state__add_warning(State2, ?WARN_NON_PROPER_LIST, Tree, Msg); @@ -979,8 +1034,9 @@ handle_receive(Tree, Map, State) -> [], []), Map1 = join_maps(MapList, Map), {State3, Map2, TimeoutType} = traverse(Timeout, Map1, State2), - case (t_is_atom(TimeoutType) andalso - (t_atom_vals(TimeoutType) =:= ['infinity'])) of + Opaques = State3#state.opaques, + case (t_is_atom(TimeoutType, Opaques) andalso + (t_atom_vals(TimeoutType, Opaques) =:= ['infinity'])) of true -> {State3, Map2, ReceiveType}; false -> @@ -1023,6 +1079,19 @@ handle_try(Tree, Map, State) -> %%---------------------------------------- +handle_map(Tree,Map,State) -> + Pairs = cerl:map_es(Tree), + {State1, Map1, TypePairs} = traverse_list(Pairs,Map,State), + {State1, Map1, t_map(TypePairs)}. + +handle_map_pair(Tree,Map,State) -> + Key = cerl:map_pair_key(Tree), + Val = cerl:map_pair_val(Tree), + {State1, Map1, [K,V]} = traverse_list([Key,Val],Map,State), + {State1, Map1, {K,V}}. + +%%---------------------------------------- + handle_tuple(Tree, Map, State) -> Elements = cerl:tuple_es(Tree), {State1, Map1, EsType} = traverse_list(Elements, Map, State), @@ -1031,55 +1100,46 @@ handle_tuple(Tree, Map, State) -> true -> {State1, Map1, t_none()}; false -> - %% Let's find out if this is a record or opaque construction. + %% Let's find out if this is a record case Elements of [Tag|Left] -> case cerl:is_c_atom(Tag) of true -> TagVal = cerl:atom_val(Tag), - case t_opaque_match_record(TupleType, State1#state.opaques) of - [Opaque] -> - RecStruct = t_opaque_matching_structure(TupleType, Opaque), - RecFields = t_tuple_args(RecStruct), - case bind_pat_vars(Elements, RecFields, [], Map1, State1) of - {error, _, ErrorPat, ErrorType, _} -> - Msg = {record_constr, - [TagVal, format_patterns(ErrorPat), - format_type(ErrorType, State1)]}, - State2 = state__add_warning(State1, ?WARN_MATCHING, - Tree, Msg), - {State2, Map1, t_none()}; - {Map2, _ETypes} -> - {State1, Map2, Opaque} - end; - _ -> - case state__lookup_record(TagVal, length(Left), State1) of - error -> {State1, Map1, TupleType}; - {ok, RecType} -> - InfTupleType = t_inf(RecType, TupleType), - case t_is_none(InfTupleType) of - true -> - RecC = format_type(TupleType, State1), - FieldDiffs = format_field_diffs(TupleType, State1), - Msg = {record_constr, [RecC, FieldDiffs]}, - State2 = state__add_warning(State1, ?WARN_MATCHING, - Tree, Msg), - {State2, Map1, t_none()}; - false -> - case bind_pat_vars(Elements, t_tuple_args(RecType), - [], Map1, State1) of - {error, bind, ErrorPat, ErrorType, _} -> - Msg = {record_constr, - [TagVal, format_patterns(ErrorPat), - format_type(ErrorType, State1)]}, - State2 = state__add_warning(State1, ?WARN_MATCHING, - Tree, Msg), - {State2, Map1, t_none()}; - {Map2, ETypes} -> - {State1, Map2, t_tuple(ETypes)} - end - end - end + case state__lookup_record(TagVal, length(Left), State1) of + error -> {State1, Map1, TupleType}; + {ok, RecType} -> + InfTupleType = t_inf(RecType, TupleType), + case t_is_none(InfTupleType) of + true -> + RecC = format_type(TupleType, State1), + FieldDiffs = format_field_diffs(TupleType, State1), + Msg = {record_constr, [RecC, FieldDiffs]}, + State2 = state__add_warning(State1, ?WARN_MATCHING, + Tree, Msg), + {State2, Map1, t_none()}; + false -> + case bind_pat_vars(Elements, t_tuple_args(RecType), + [], Map1, State1) of + {error, bind, ErrorPat, ErrorType, _} -> + Msg = {record_constr, + [TagVal, format_patterns(ErrorPat), + format_type(ErrorType, State1)]}, + State2 = state__add_warning(State1, ?WARN_MATCHING, + Tree, Msg), + {State2, Map1, t_none()}; + {error, opaque, ErrorPat, ErrorType, OpaqueType} -> + Msg = {opaque_match, + [format_patterns(ErrorPat), + format_type(ErrorType, State1), + format_type(OpaqueType, State1)]}, + State2 = state__add_warning(State1, ?WARN_OPAQUE, + Tree, Msg), + {State2, Map1, t_none()}; + {Map2, ETypes} -> + {State1, Map2, t_tuple(ETypes)} + end + end end; false -> {State1, Map1, t_tuple(EsType)} @@ -1356,7 +1416,9 @@ bind_pat_vars_reverse(Pats, Types, Acc, Map, State) -> end. bind_pat_vars([Pat|PatLeft], [Type|TypeLeft], Acc, Map, State, Rev) -> - ?debug("Binding pat: ~w to ~s\n", [cerl:type(Pat), format_type(Type, State)]), + ?debug("Binding pat: ~w to ~s\n", [cerl:type(Pat), format_type(Type, State)] +), + Opaques = State#state.opaques, {NewMap, TypeOut} = case cerl:type(Pat) of alias -> @@ -1372,9 +1434,15 @@ bind_pat_vars([Pat|PatLeft], [Type|TypeLeft], Acc, Map, State, Rev) -> case Rev of true -> {Map, t_bitstr()}; false -> - BinType = t_inf(t_bitstr(), Type), + BinType = t_inf(t_bitstr(), Type, Opaques), case t_is_none(BinType) of - true -> bind_error([Pat], Type, t_none(), bind); + true -> + case t_find_opaque_mismatch(t_bitstr(), Type) of + {ok, T1, T2} -> + bind_error([Pat], T1, T2, opaque); + error -> + bind_error([Pat], Type, t_none(), bind) + end; false -> Segs = cerl:binary_segments(Pat), {Map1, SegTypes} = bind_bin_segs(Segs, BinType, Map, State), @@ -1382,29 +1450,27 @@ bind_pat_vars([Pat|PatLeft], [Type|TypeLeft], Acc, Map, State, Rev) -> end end; cons -> - Cons = t_inf(Type, t_cons()), + Cons = t_inf(Type, t_cons(), Opaques), case t_is_none(Cons) of true -> bind_opaque_pats(t_cons(), Type, Pat, Map, State, Rev); false -> {Map1, [HdType, TlType]} = bind_pat_vars([cerl:cons_hd(Pat), cerl:cons_tl(Pat)], - [t_cons_hd(Cons), t_cons_tl(Cons)], + [t_cons_hd(Cons, Opaques), + t_cons_tl(Cons, Opaques)], [], Map, State, Rev), {Map1, t_cons(HdType, TlType)} end; literal -> Literal = literal_type(Pat), - LiteralOrOpaque = - case t_opaque_match_atom(Literal, State#state.opaques) of - [Opaque] -> Opaque; - _ -> Literal - end, - case t_is_none(t_inf(LiteralOrOpaque, Type)) of + case t_is_none(t_inf(Literal, Type, Opaques)) of true -> bind_opaque_pats(Literal, Type, Pat, Map, State, Rev); - false -> {Map, LiteralOrOpaque} + false -> {Map, Literal} end; + map -> + {Map, t_map([])}; tuple -> Es = cerl:tuple_es(Pat), {TypedRecord, Prototype} = @@ -1419,27 +1485,28 @@ bind_pat_vars([Pat|PatLeft], [Type|TypeLeft], Acc, Map, State, Rev) -> {ok, Record} -> [_Head|AnyTail] = [t_any() || _ <- Es], UntypedRecord = t_tuple([t_atom(TagAtom)|AnyTail]), - {not erl_types:t_is_equal(Record, UntypedRecord), Record} + {not t_is_equal(Record, UntypedRecord), Record} end; false -> {false, t_tuple(length(Es))} end end, - Tuple = t_inf(Prototype, Type), + Tuple = t_inf(Prototype, Type, Opaques), case t_is_none(Tuple) of true -> bind_opaque_pats(Prototype, Type, Pat, Map, State, Rev); false -> - SubTuples = t_tuple_subtypes(Tuple), + SubTuples = t_tuple_subtypes(Tuple, Opaques), %% Need to call the top function to get the try-catch wrapper MapJ = join_maps_begin(Map), Results = case Rev of true -> - [bind_pat_vars_reverse(Es, t_tuple_args(SubTuple), [], - MapJ, State) + [bind_pat_vars_reverse(Es, t_tuple_args(SubTuple, Opaques), + [], MapJ, State) || SubTuple <- SubTuples]; false -> - [bind_pat_vars(Es, t_tuple_args(SubTuple), [], MapJ, State) + [bind_pat_vars(Es, t_tuple_args(SubTuple, Opaques), [], + MapJ, State) || SubTuple <- SubTuples] end, case lists:keyfind(opaque, 2, Results) of @@ -1466,37 +1533,14 @@ bind_pat_vars([Pat|PatLeft], [Type|TypeLeft], Acc, Map, State, Rev) -> bind_pat_vars(Es, t_to_tlist(Type), [], Map, State, Rev), {Map1, t_product(EsTypes)}; var -> - Opaques = State#state.opaques, VarType1 = - case state__lookup_type_for_rec_var(Pat, State) of - error -> - LType = lookup_type(Pat, Map), - case t_opaque_match_record(LType, Opaques) of - [Opaque] -> Opaque; - _ -> - case t_opaque_match_atom(LType, Opaques) of - [Opaque] -> Opaque; - _ -> LType - end - end; + case state__lookup_type_for_letrec(Pat, State) of + error -> lookup_type(Pat, Map); {ok, RecType} -> RecType end, %% Must do inf when binding args to pats. Vars in pats are fresh. - VarType2 = t_inf(VarType1, Type), - VarType3 = - case Opaques =/= [] of - true -> - case t_opaque_match_record(VarType2, Opaques) of - [OpaqueRec] -> OpaqueRec; - _ -> - case t_opaque_match_atom(VarType2, Opaques) of - [OpaqueAtom] -> OpaqueAtom; - _ -> VarType2 - end - end; - false -> VarType2 - end, - case t_is_none(VarType3) of + VarType2 = t_inf(VarType1, Type, Opaques), + case t_is_none(VarType2) of true -> case t_find_opaque_mismatch(VarType1, Type) of {ok, T1, T2} -> @@ -1505,8 +1549,8 @@ bind_pat_vars([Pat|PatLeft], [Type|TypeLeft], Acc, Map, State, Rev) -> bind_error([Pat], Type, t_none(), bind) end; false -> - Map1 = enter_type(Pat, VarType3, Map), - {Map1, VarType3} + Map1 = enter_type(Pat, VarType2, Map), + {Map1, VarType2} end; _Other -> %% Catch all is needed when binding args to pats @@ -1529,7 +1573,8 @@ bind_bin_segs([Seg|Segs], BinType, Acc, Map, State) -> binary = SegType, [] = Segs, %% just an assert T = t_inf(t_bitstr(UnitVal, 0), BinType), {Map1, [Type]} = bind_pat_vars([Val], [T], [], Map, State, false), - bind_bin_segs(Segs, t_bitstr(0, 0), [Type|Acc], Map1, State); + Type1 = remove_local_opaque_types(Type, State#state.opaques), + bind_bin_segs(Segs, t_bitstr(0, 0), [Type1|Acc], Map1, State); utf -> % XXX: possibly can be strengthened true = lists:member(SegType, [utf8, utf16, utf32]), {Map1, [_]} = bind_pat_vars([Val], [t_integer()], [], Map, State, false), @@ -1539,11 +1584,17 @@ bind_bin_segs([Seg|Segs], BinType, Acc, Map, State) -> Size = cerl:bitstr_size(Seg), {Map1, [SizeType]} = bind_pat_vars([Size], [t_non_neg_integer()], [], Map, State, false), + Opaques = State#state.opaques, + NumberVals = t_number_vals(SizeType, Opaques), + case t_contains_opaque(SizeType, Opaques) of + true -> bind_error([Seg], SizeType, t_none(), opaque); + false -> ok + end, Type = - case t_number_vals(SizeType) of + case NumberVals of [OneSize] -> t_bitstr(0, UnitVal * OneSize); - _ -> - MinSize = erl_types:number_min(SizeType), + _ -> % 'unknown' too + MinSize = erl_types:number_min(SizeType, Opaques), t_bitstr(UnitVal, UnitVal * MinSize) end, ValConstr = @@ -1551,7 +1602,7 @@ bind_bin_segs([Seg|Segs], BinType, Acc, Map, State) -> binary -> Type; %% The same constraints as for the whole bitstr float -> t_float(); integer -> - case t_number_vals(SizeType) of + case NumberVals of unknown -> t_integer(); List -> SizeVal = lists:max(List), @@ -1579,7 +1630,7 @@ bind_error(Pats, Type, OpaqueType, Error) -> bind_opaque_pats(GenType, Type, Pat, Map, State, Rev) -> case t_find_opaque_mismatch(GenType, Type) of {ok, T1, T2} -> - case lists:member(T2, State#state.opaques) of + case erl_types:is_opaque_type(T2, State#state.opaques) of true -> NewType = erl_types:t_struct_from_opaque(Type, [T2]), {Map1, _} = @@ -1630,6 +1681,8 @@ bind_guard(Guard, Map, Env, Eval, State) -> Es0 = cerl:tuple_es(Guard), {Map1, Es} = bind_guard_list(Es0, Map, Env, dont_know, State), {Map1, t_tuple(Es)}; + map -> + {Map, t_map([])}; 'let' -> Arg = cerl:let_arg(Guard), [Var] = cerl:let_vars(Guard), @@ -1700,19 +1753,9 @@ handle_guard_call(Guard, Map, Env, Eval, State) -> handle_guard_gen_fun({M, F, A}, Guard, Map, Env, Eval, State) -> Args = cerl:call_args(Guard), - {Map1, As0} = bind_guard_list(Args, Map, Env, dont_know, State), - MapFun = fun(Type) -> - case lists:member(Type, State#state.opaques) of - true -> erl_types:t_opaque_structure(Type); - false -> Type - end - end, - As = lists:map(MapFun, As0), - Mode = case As =:= As0 of - true -> structured; - false -> opaque - end, - BifRet = erl_bif_types:type(M, F, A, As), + {Map1, As} = bind_guard_list(Args, Map, Env, dont_know, State), + Opaques = State#state.opaques, + BifRet = erl_bif_types:type(M, F, A, As, Opaques), case t_is_none(BifRet) of true -> %% Is this an error-bif? @@ -1721,11 +1764,8 @@ handle_guard_gen_fun({M, F, A}, Guard, Map, Env, Eval, State) -> false -> signal_guard_fatal_fail(Eval, Guard, As, State) end; false -> - BifArgs = case erl_bif_types:arg_types(M, F, A) of - unknown -> lists:duplicate(A, t_any()); - List -> List - end, - Map2 = enter_type_lists(Args, t_inf_lists(BifArgs, As0, Mode), Map1), + BifArgs = bif_args(M, F, A), + Map2 = enter_type_lists(Args, t_inf_lists(BifArgs, As, Opaques), Map1), Ret = case Eval of pos -> t_inf(t_atom(true), BifRet); @@ -1771,29 +1811,19 @@ bind_type_test(Eval, TypeTest, ArgType, State) -> is_reference -> t_reference(); is_tuple -> t_tuple() end, - Mode = determine_mode(ArgType, State#state.opaques), case Eval of pos -> - Inf = t_inf(Type, ArgType, Mode), + Inf = t_inf(Type, ArgType, State#state.opaques), case t_is_none(Inf) of true -> error; false -> {ok, Inf, t_atom(true)} end; neg -> - case Mode of - opaque -> - Struct = erl_types:t_opaque_structure(ArgType), - case t_is_none(t_subtract(Struct, Type)) of - true -> error; - false -> {ok, ArgType, t_atom(false)} - end; - structured -> - Sub = t_subtract(ArgType, Type), - case t_is_none(Sub) of - true -> error; - false -> {ok, Sub, t_atom(false)} - end - end; + Sub = t_subtract(ArgType, Type), + case t_is_none(Sub) of + true -> error; + false -> {ok, Sub, t_atom(false)} + end; dont_know -> {ok, ArgType, t_boolean()} end. @@ -1802,9 +1832,10 @@ handle_guard_comp(Guard, Comp, Map, Env, Eval, State) -> Args = cerl:call_args(Guard), [Arg1, Arg2] = Args, {Map1, ArgTypes} = bind_guard_list(Args, Map, Env, dont_know, State), + Opaques = State#state.opaques, [Type1, Type2] = ArgTypes, - IsInt1 = t_is_integer(Type1), - IsInt2 = t_is_integer(Type2), + IsInt1 = t_is_integer(Type1, Opaques), + IsInt2 = t_is_integer(Type2, Opaques), case {cerl:type(Arg1), cerl:type(Arg2)} of {literal, literal} -> case erlang:Comp(cerl:concrete(Arg1), cerl:concrete(Arg2)) of @@ -1817,12 +1848,13 @@ handle_guard_comp(Guard, Comp, Map, Env, Eval, State) -> false when Eval =:= neg -> {Map, t_atom(false)} end; {literal, var} when IsInt1 andalso IsInt2 andalso (Eval =:= pos) -> - case bind_comp_literal_var(Arg1, Arg2, Type2, Comp, Map1) of + case bind_comp_literal_var(Arg1, Arg2, Type2, Comp, Map1, Opaques) of error -> signal_guard_fail(Eval, Guard, ArgTypes, State); {ok, NewMap} -> {NewMap, t_atom(true)} end; {var, literal} when IsInt1 andalso IsInt2 andalso (Eval =:= pos) -> - case bind_comp_literal_var(Arg2, Arg1, Type1, invert_comp(Comp), Map1) of + case bind_comp_literal_var(Arg2, Arg1, Type1, invert_comp(Comp), + Map1, Opaques) of error -> signal_guard_fail(Eval, Guard, ArgTypes, State); {ok, NewMap} -> {NewMap, t_atom(true)} end; @@ -1835,10 +1867,10 @@ invert_comp('<') -> '>'; invert_comp('>=') -> '=<'; invert_comp('>') -> '<'. -bind_comp_literal_var(Lit, Var, VarType, CompOp, Map) -> +bind_comp_literal_var(Lit, Var, VarType, CompOp, Map, Opaques) -> LitVal = cerl:concrete(Lit), NewVarType = - case t_number_vals(VarType) of + case t_number_vals(VarType, Opaques) of unknown -> Range = case CompOp of @@ -1847,7 +1879,7 @@ bind_comp_literal_var(Lit, Var, VarType, CompOp, Map) -> '>=' -> t_from_range(neg_inf, LitVal); '>' -> t_from_range(neg_inf, LitVal - 1) end, - t_inf(Range, VarType); + t_inf(Range, VarType, Opaques); NumberVals -> NewNumberVals = [X || X <- NumberVals, erlang:CompOp(LitVal, X)], t_integers(NewNumberVals) @@ -1861,17 +1893,18 @@ handle_guard_is_function(Guard, Map, Env, Eval, State) -> Args = cerl:call_args(Guard), {Map1, ArgTypes0} = bind_guard_list(Args, Map, Env, dont_know, State), [FunType0, ArityType0] = ArgTypes0, - ArityType = t_inf(ArityType0, t_integer()), + Opaques = State#state.opaques, + ArityType = t_inf(ArityType0, t_integer(), Opaques), case t_is_none(ArityType) of true -> signal_guard_fail(Eval, Guard, ArgTypes0, State); false -> FunTypeConstr = - case t_number_vals(ArityType) of + case t_number_vals(ArityType, State#state.opaques) of unknown -> t_fun(); Vals -> t_sup([t_fun(lists:duplicate(X, t_any()), t_any()) || X <- Vals]) end, - FunType = t_inf(FunType0, FunTypeConstr), + FunType = t_inf(FunType0, FunTypeConstr, Opaques), case t_is_none(FunType) of true -> case Eval of @@ -1896,33 +1929,45 @@ handle_guard_is_record(Guard, Map, Env, Eval, State) -> Arity = cerl:int_val(Arity0), {Map1, RecType} = bind_guard(Rec, Map, Env, dont_know, State), ArityMin1 = Arity - 1, - TupleType = - case state__lookup_record(Tag, ArityMin1, State) of - error -> t_tuple([t_atom(Tag)|lists:duplicate(ArityMin1, t_any())]); - {ok, Prototype} -> Prototype - end, - Mode = determine_mode(RecType, State#state.opaques), - NewTupleType = - case t_opaque_match_record(TupleType, State#state.opaques) of - [Opaque] -> Opaque; - _ -> TupleType - end, - Type = t_inf(NewTupleType, RecType, Mode), - case t_is_none(Type) of + Opaques = State#state.opaques, + Tuple = t_tuple([t_atom(Tag)|lists:duplicate(ArityMin1, t_any())]), + case t_is_none(t_inf(Tuple, RecType, Opaques)) of true -> - case Eval of - pos -> signal_guard_fail(Eval, Guard, - [RecType, t_from_term(Tag), - t_from_term(Arity)], - State); - neg -> {Map1, t_atom(false)}; - dont_know -> {Map1, t_atom(false)} + case erl_types:t_has_opaque_subtype(RecType, Opaques) of + true -> + signal_guard_fail(Eval, Guard, + [RecType, t_from_term(Tag), + t_from_term(Arity)], + State); + false -> + case Eval of + pos -> signal_guard_fail(Eval, Guard, + [RecType, t_from_term(Tag), + t_from_term(Arity)], + State); + neg -> {Map1, t_atom(false)}; + dont_know -> {Map1, t_atom(false)} + end end; false -> - case Eval of - pos -> {enter_type(Rec, Type, Map1), t_atom(true)}; - neg -> {Map1, t_atom(false)}; - dont_know -> {Map1, t_boolean()} + TupleType = + case state__lookup_record(Tag, ArityMin1, State) of + error -> Tuple; + {ok, Prototype} -> Prototype + end, + Type = t_inf(TupleType, RecType, State#state.opaques), + case t_is_none(Type) of + true -> + %% No special handling of opaque errors. + FArgs = "record " ++ format_type(RecType, State), + Msg = {record_matching, [FArgs, Tag]}, + throw({fail, {Guard, Msg}}); + false -> + case Eval of + pos -> {enter_type(Rec, Type, Map1), t_atom(true)}; + neg -> {Map1, t_atom(false)}; + dont_know -> {Map1, t_boolean()} + end end end. @@ -1975,14 +2020,24 @@ handle_guard_eq(Guard, Map, Env, Eval, State) -> bind_eq_guard(Guard, Arg1, Arg2, Map, Env, Eval, State) -> {Map1, Type1} = bind_guard(Arg1, Map, Env, dont_know, State), {Map2, Type2} = bind_guard(Arg2, Map1, Env, dont_know, State), - case (t_is_nil(Type1) orelse t_is_nil(Type2) orelse - t_is_atom(Type1) orelse t_is_atom(Type2)) of + Opaques = State#state.opaques, + case + t_is_nil(Type1, Opaques) orelse t_is_nil(Type2, Opaques) + orelse t_is_atom(Type1, Opaques) orelse t_is_atom(Type2, Opaques) + of true -> bind_eqeq_guard(Guard, Arg1, Arg2, Map, Env, Eval, State); false -> - case Eval of - pos -> {Map2, t_atom(true)}; - neg -> {Map2, t_atom(false)}; - dont_know -> {Map2, t_boolean()} + %% XXX. Is this test OK? + OpArgs = erl_types:t_find_unknown_opaque(Type1, Type2, Opaques), + case OpArgs =:= [] of + true -> + case Eval of + pos -> {Map2, t_atom(true)}; + neg -> {Map2, t_atom(false)}; + dont_know -> {Map2, t_boolean()} + end; + false -> + signal_guard_fail(Eval, Guard, [Type1, Type2], State) end end. @@ -2021,44 +2076,52 @@ bind_eqeq_guard(Guard, Arg1, Arg2, Map, Env, Eval, State) -> {Map2, Type2} = bind_guard(Arg2, Map1, Env, dont_know, State), ?debug("Types are:~s =:= ~s\n", [t_to_string(Type1), t_to_string(Type2)]), - Inf = t_inf(Type1, Type2), + Opaques = State#state.opaques, + Inf = t_inf(Type1, Type2, Opaques), case t_is_none(Inf) of true -> - case Eval of - neg -> {Map2, t_atom(false)}; - dont_know -> {Map2, t_atom(false)}; - pos -> signal_guard_fail(Eval, Guard, [Type1, Type2], State) + OpArgs = erl_types:t_find_unknown_opaque(Type1, Type2, Opaques), + case OpArgs =:= [] of + true -> + case Eval of + neg -> {Map2, t_atom(false)}; + dont_know -> {Map2, t_atom(false)}; + pos -> signal_guard_fail(Eval, Guard, [Type1, Type2], State) + end; + false -> + signal_guard_fail(Eval, Guard, [Type1, Type2], State) end; false -> case Eval of - pos -> - case {cerl:type(Arg1), cerl:type(Arg2)} of - {var, var} -> - Map3 = enter_subst(Arg1, Arg2, Map2), - Map4 = enter_type(Arg2, Inf, Map3), - {Map4, t_atom(true)}; - {var, _} -> - Map3 = enter_type(Arg1, Inf, Map2), - {Map3, t_atom(true)}; - {_, var} -> - Map3 = enter_type(Arg2, Inf, Map2), - {Map3, t_atom(true)}; - {_, _} -> - {Map2, t_atom(true)} - end; - neg -> - {Map2, t_atom(false)}; - dont_know -> - {Map2, t_boolean()} + pos -> + case {cerl:type(Arg1), cerl:type(Arg2)} of + {var, var} -> + Map3 = enter_subst(Arg1, Arg2, Map2), + Map4 = enter_type(Arg2, Inf, Map3), + {Map4, t_atom(true)}; + {var, _} -> + Map3 = enter_type(Arg1, Inf, Map2), + {Map3, t_atom(true)}; + {_, var} -> + Map3 = enter_type(Arg2, Inf, Map2), + {Map3, t_atom(true)}; + {_, _} -> + {Map2, t_atom(true)} + end; + neg -> + {Map2, t_atom(false)}; + dont_know -> + {Map2, t_boolean()} end end. bind_eqeq_guard_lit_other(Guard, Arg1, Arg2, Map, Env, State) -> Eval = dont_know, + Opaques = State#state.opaques, case cerl:concrete(Arg1) of true -> {_, Type} = MT = bind_guard(Arg2, Map, Env, pos, State), - case t_is_atom(true, Type) of + case t_is_any_atom(true, Type, Opaques) of true -> MT; false -> {_, Type0} = bind_guard(Arg2, Map, Env, Eval, State), @@ -2066,7 +2129,7 @@ bind_eqeq_guard_lit_other(Guard, Arg1, Arg2, Map, Env, State) -> end; false -> {Map1, Type} = bind_guard(Arg2, Map, Env, neg, State), - case t_is_atom(false, Type) of + case t_is_any_atom(false, Type, Opaques) of true -> {Map1, t_atom(true)}; false -> {_, Type0} = bind_guard(Arg2, Map, Env, Eval, State), @@ -2087,14 +2150,15 @@ bind_eqeq_guard_lit_other(Guard, Arg1, Arg2, Map, Env, State) -> handle_guard_and(Guard, Map, Env, Eval, State) -> [Arg1, Arg2] = cerl:call_args(Guard), + Opaques = State#state.opaques, case Eval of pos -> {Map1, Type1} = bind_guard(Arg1, Map, Env, Eval, State), - case t_is_atom(true, Type1) of + case t_is_any_atom(true, Type1, Opaques) of false -> signal_guard_fail(Eval, Guard, [Type1, t_any()], State); true -> {Map2, Type2} = bind_guard(Arg2, Map1, Env, Eval, State), - case t_is_atom(true, Type2) of + case t_is_any_atom(true, Type2, Opaques) of false -> signal_guard_fail(Eval, Guard, [Type1, Type2], State); true -> {Map2, t_atom(true)} end @@ -2109,7 +2173,10 @@ handle_guard_and(Guard, Map, Env, Eval, State) -> try bind_guard(Arg2, MapJ, Env, neg, State) catch throw:{fail, _} -> bind_guard(Arg1, MapJ, Env, pos, State) end, - case t_is_atom(false, Type1) orelse t_is_atom(false, Type2) of + case + t_is_any_atom(false, Type1, Opaques) + orelse t_is_any_atom(false, Type2, Opaques) + of true -> {join_maps_end([Map1, Map2], MapJ), t_atom(false)}; false -> signal_guard_fail(Eval, Guard, [Type1, Type2], State) end; @@ -2124,11 +2191,16 @@ handle_guard_and(Guard, Map, Env, Eval, State) -> false -> NewMap = join_maps_end([Map1, Map2], MapJ), NewType = - case {t_atom_vals(Bool1), t_atom_vals(Bool2)} of + case {t_atom_vals(Bool1, Opaques), t_atom_vals(Bool2, Opaques)} of {['true'] , ['true'] } -> t_atom(true); {['false'], _ } -> t_atom(false); {_ , ['false']} -> t_atom(false); + {unknown , _ } -> + signal_guard_fail(Eval, Guard, [Type1, Type2], State); + {_ , unknown } -> + signal_guard_fail(Eval, Guard, [Type1, Type2], State); {_ , _ } -> t_boolean() + end, {NewMap, NewType} end @@ -2136,6 +2208,7 @@ handle_guard_and(Guard, Map, Env, Eval, State) -> handle_guard_or(Guard, Map, Env, Eval, State) -> [Arg1, Arg2] = cerl:call_args(Guard), + Opaques = State#state.opaques, case Eval of pos -> MapJ = join_maps_begin(Map), @@ -2149,19 +2222,23 @@ handle_guard_or(Guard, Map, Env, Eval, State) -> catch throw:{fail,_} -> bind_guard(Arg2, MapJ, Env, dont_know, State) end, - case ((t_is_atom(true, Bool1) andalso t_is_boolean(Bool2)) - orelse - (t_is_atom(true, Bool2) andalso t_is_boolean(Bool1))) of + case + ((t_is_any_atom(true, Bool1, Opaques) + andalso t_is_boolean(Bool2, Opaques)) + orelse + (t_is_any_atom(true, Bool2, Opaques) + andalso t_is_boolean(Bool1, Opaques))) + of true -> {join_maps_end([Map1, Map2], MapJ), t_atom(true)}; false -> signal_guard_fail(Eval, Guard, [Bool1, Bool2], State) end; neg -> {Map1, Type1} = bind_guard(Arg1, Map, Env, neg, State), - case t_is_atom(false, Type1) of + case t_is_any_atom(false, Type1, Opaques) of false -> signal_guard_fail(Eval, Guard, [Type1, t_any()], State); true -> {Map2, Type2} = bind_guard(Arg2, Map1, Env, neg, State), - case t_is_atom(false, Type2) of + case t_is_any_atom(false, Type2, Opaques) of false -> signal_guard_fail(Eval, Guard, [Type1, Type2], State); true -> {Map2, t_atom(false)} end @@ -2177,10 +2254,14 @@ handle_guard_or(Guard, Map, Env, Eval, State) -> false -> NewMap = join_maps_end([Map1, Map2], MapJ), NewType = - case {t_atom_vals(Bool1), t_atom_vals(Bool2)} of + case {t_atom_vals(Bool1, Opaques), t_atom_vals(Bool2, Opaques)} of {['false'], ['false']} -> t_atom(false); {['true'] , _ } -> t_atom(true); {_ , ['true'] } -> t_atom(true); + {unknown , _ } -> + signal_guard_fail(Eval, Guard, [Type1, Type2], State); + {_ , unknown } -> + signal_guard_fail(Eval, Guard, [Type1, Type2], State); {_ , _ } -> t_boolean() end, {NewMap, NewType} @@ -2189,10 +2270,11 @@ handle_guard_or(Guard, Map, Env, Eval, State) -> handle_guard_not(Guard, Map, Env, Eval, State) -> [Arg] = cerl:call_args(Guard), + Opaques = State#state.opaques, case Eval of neg -> {Map1, Type} = bind_guard(Arg, Map, Env, pos, State), - case t_is_atom(true, Type) of + case t_is_any_atom(true, Type, Opaques) of true -> {Map1, t_atom(false)}; false -> {_, Type0} = bind_guard(Arg, Map, Env, Eval, State), @@ -2200,7 +2282,7 @@ handle_guard_not(Guard, Map, Env, Eval, State) -> end; pos -> {Map1, Type} = bind_guard(Arg, Map, Env, neg, State), - case t_is_atom(false, Type) of + case t_is_any_atom(false, Type, Opaques) of true -> {Map1, t_atom(true)}; false -> {_, Type0} = bind_guard(Arg, Map, Env, Eval, State), @@ -2212,10 +2294,11 @@ handle_guard_not(Guard, Map, Env, Eval, State) -> case t_is_none(Bool) of true -> throw({fatal_fail, none}); false -> - case t_atom_vals(Bool) of + case t_atom_vals(Bool, Opaques) of ['true'] -> {Map1, t_atom(false)}; ['false'] -> {Map1, t_atom(true)}; - [_, _] -> {Map1, Bool} + [_, _] -> {Map1, Bool}; + unknown -> signal_guard_fail(Eval, Guard, [Type], State) end end end. @@ -2231,31 +2314,47 @@ bind_guard_list([], Map, _Env, _Eval, _State, Acc) -> -type eval() :: 'pos' | 'neg' | 'dont_know'. --spec signal_guard_fail(eval(), cerl:c_call(), [erl_types:erl_type()], +-spec signal_guard_fail(eval(), cerl:c_call(), [type()], state()) -> no_return(). signal_guard_fail(Eval, Guard, ArgTypes, State) -> + signal_guard_failure(Eval, Guard, ArgTypes, fail, State). + +-spec signal_guard_fatal_fail(eval(), cerl:c_call(), [erl_types:erl_type()], + state()) -> no_return(). + +signal_guard_fatal_fail(Eval, Guard, ArgTypes, State) -> + signal_guard_failure(Eval, Guard, ArgTypes, fatal_fail, State). + +signal_guard_failure(Eval, Guard, ArgTypes, Tag, State) -> Args = cerl:call_args(Guard), F = cerl:atom_val(cerl:call_name(Guard)), - MFA = {cerl:atom_val(cerl:call_module(Guard)), F, length(Args)}, - Msg = + {M, F, A} = MFA = {cerl:atom_val(cerl:call_module(Guard)), F, length(Args)}, + Opaques = State#state.opaques, + {Kind, XInfo} = + case erl_bif_types:opaque_args(M, F, A, ArgTypes, Opaques) of + [] -> + {case Eval of + neg -> neg_guard_fail; + pos -> guard_fail; + dont_know -> guard_fail + end, + []}; + Ns -> {opaque_guard, [Ns]} + end, + FArgs = case is_infix_op(MFA) of true -> [ArgType1, ArgType2] = ArgTypes, [Arg1, Arg2] = Args, - Kind = - case Eval of - neg -> neg_guard_fail; - pos -> guard_fail; - dont_know -> guard_fail - end, - {Kind, [format_args_1([Arg1], [ArgType1], State), - atom_to_list(F), - format_args_1([Arg2], [ArgType2], State)]}; + [format_args_1([Arg1], [ArgType1], State), + atom_to_list(F), + format_args_1([Arg2], [ArgType2], State)] ++ XInfo; false -> - mk_guard_msg(Eval, F, Args, ArgTypes, State) + [F, format_args(Args, ArgTypes, State)] end, - throw({fail, {Guard, Msg}}). + Msg = {Kind, FArgs}, + throw({Tag, {Guard, Msg}}). is_infix_op({erlang, '=:=', 2}) -> true; is_infix_op({erlang, '==', 2}) -> true; @@ -2268,25 +2367,10 @@ is_infix_op({erlang, '>=', 2}) -> true; is_infix_op({M, F, A}) when is_atom(M), is_atom(F), is_integer(A), 0 =< A, A =< 255 -> false. --spec signal_guard_fatal_fail(eval(), cerl:c_call(), [erl_types:erl_type()], - state()) -> no_return(). - -signal_guard_fatal_fail(Eval, Guard, ArgTypes, State) -> - Args = cerl:call_args(Guard), - F = cerl:atom_val(cerl:call_name(Guard)), - Msg = mk_guard_msg(Eval, F, Args, ArgTypes, State), - throw({fatal_fail, {Guard, Msg}}). - -mk_guard_msg(Eval, F, Args, ArgTypes, State) -> - FArgs = [F, format_args(Args, ArgTypes, State)], - case any_has_opaque_subtype(ArgTypes) of - true -> {opaque_guard, FArgs}; - false -> - case Eval of - neg -> {neg_guard_fail, FArgs}; - pos -> {guard_fail, FArgs}; - dont_know -> {guard_fail, FArgs} - end +bif_args(M, F, A) -> + case erl_bif_types:arg_types(M, F, A) of + unknown -> lists:duplicate(A, t_any()); + List -> List end. bind_guard_case_clauses(Arg, Clauses, Map0, Env, Eval, State) -> @@ -2366,14 +2450,15 @@ bind_guard_case_clauses(GenArgType, GenMap, ArgExpr, [Clause|Left], end, {NewMap3, CType} = bind_guard(cerl:clause_body(Clause), NewMap2, Env, Eval, State), + Opaques = State#state.opaques, case Eval of pos -> - case t_is_atom(true, CType) of + case t_is_any_atom(true, CType, Opaques) of true -> ok; false -> throw({fail, none}) end; neg -> - case t_is_atom(false, CType) of + case t_is_any_atom(false, CType, Opaques) of true -> ok; false -> throw({fail, none}) end; @@ -2501,8 +2586,11 @@ enter_type(Key, Val, MS) -> error -> ?debug("Entering ~p :: ~s\n", [KeyLabel, t_to_string(Val)]), case dict:find(KeyLabel, Dict) of - {ok, Val} -> MS; - {ok, _OldVal} -> store_map(KeyLabel, Val, MS); + {ok, Value} -> + case erl_types:t_is_equal(Val, Value) of + true -> MS; + false -> store_map(KeyLabel, Val, MS) + end; error -> store_map(KeyLabel, Val, MS) end end @@ -2611,10 +2699,15 @@ get_label(L) when is_integer(L) -> get_label(T) -> cerl_trees:get_label(T). -t_is_simple(ArgType) -> - t_is_atom(ArgType) orelse t_is_number(ArgType) orelse t_is_port(ArgType) - orelse t_is_pid(ArgType) orelse t_is_reference(ArgType) - orelse t_is_nil(ArgType). +t_is_simple(ArgType, State) -> + Opaques = State#state.opaques, + t_is_atom(ArgType, Opaques) orelse t_is_number(ArgType, Opaques) + orelse t_is_port(ArgType, Opaques) + orelse t_is_pid(ArgType, Opaques) orelse t_is_reference(ArgType, Opaques) + orelse t_is_nil(ArgType, Opaques). + +remove_local_opaque_types(Type, Opaques) -> + t_unopaque(Type, Opaques). %% t_is_structured(ArgType) -> %% case t_is_nil(ArgType) of @@ -2638,11 +2731,12 @@ is_call_to_send(Tree) -> andalso (Arity =:= 2) end. -any_opaque(Ts) -> - lists:any(fun erl_types:t_is_opaque/1, Ts). - -any_has_opaque_subtype(Ts) -> - lists:any(fun erl_types:t_has_opaque_subtype/1, Ts). +is_lc_simple_list(Tree, TreeType, State) -> + Opaques = State#state.opaques, + Ann = cerl:get_ann(Tree), + lists:member(list_comprehension, Ann) + andalso t_is_list(TreeType) + andalso t_is_simple(t_list_elements(TreeType, Opaques), State). filter_match_fail([Clause] = Cls) -> Body = cerl:clause_body(Clause), @@ -2662,12 +2756,6 @@ filter_match_fail([]) -> %% receive after 1 -> ok end []. -determine_mode(Type, Opaques) -> - case lists:member(Type, Opaques) of - true -> opaque; - false -> structured - end. - %%% =========================================================================== %%% %%% The State. @@ -2679,7 +2767,7 @@ state__new(Callgraph, Tree, Plt, Module, Records) -> erl_types:t_opaque_from_records(Records), TreeMap = build_tree_map(Tree), Funs = dict:fetch_keys(TreeMap), - FunTab = init_fun_tab(Funs, dict:new(), TreeMap, Callgraph, Plt, Opaques), + FunTab = init_fun_tab(Funs, dict:new(), TreeMap, Callgraph, Plt), ExportedFuns = [Fun || Fun <- Funs--[top], dialyzer_callgraph:is_escaping(Fun, Callgraph)], Work = init_work(ExportedFuns), @@ -2740,12 +2828,14 @@ state__add_warning(#state{warnings = Warnings, warning_mode = true} = State, case Force of true -> Warn = {Tag, {get_file(Ann), abs(get_line(Ann))}, Msg}, + ?debug("MSG ~s\n", [dialyzer:format_warning(Warn)]), State#state{warnings = [Warn|Warnings]}; false -> case is_compiler_generated(Ann) of true -> State; false -> Warn = {Tag, {get_file(Ann), get_line(Ann)}, Msg}, + ?debug("MSG ~s\n", [dialyzer:format_warning(Warn)]), State#state{warnings = [Warn|Warnings]} end end. @@ -2829,12 +2919,11 @@ state__get_warnings(#state{tree_map = TreeMap, fun_tab = FunTab, state__is_escaping(Fun, #state{callgraph = Callgraph}) -> dialyzer_callgraph:is_escaping(Fun, Callgraph). -state__lookup_type_for_rec_var(Var, #state{callgraph = Callgraph} = State) -> +state__lookup_type_for_letrec(Var, #state{callgraph = Callgraph} = State) -> Label = get_label(Var), - case dialyzer_callgraph:lookup_rec_var(Label, Callgraph) of + case dialyzer_callgraph:lookup_letrec(Label, Callgraph) of error -> error; - {ok, MFA} -> - {ok, FunLabel} = dialyzer_callgraph:lookup_label(MFA, Callgraph), + {ok, FunLabel} -> {ok, state__fun_type(FunLabel, State)} end. @@ -2876,10 +2965,10 @@ build_tree_map(Tree) -> end, cerl_trees:fold(Fun, dict:new(), Tree). -init_fun_tab([top|Left], Dict, TreeMap, Callgraph, Plt, Opaques) -> +init_fun_tab([top|Left], Dict, TreeMap, Callgraph, Plt) -> 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) -> + init_fun_tab(Left, NewDict, TreeMap, Callgraph, Plt); +init_fun_tab([Fun|Left], Dict, TreeMap, Callgraph, Plt) -> Arity = cerl:fun_arity(dict:fetch(Fun, TreeMap)), FunEntry = case dialyzer_callgraph:is_escaping(Fun, Callgraph) of @@ -2896,8 +2985,8 @@ init_fun_tab([Fun|Left], Dict, TreeMap, Callgraph, Plt, Opaques) -> false -> {not_handled, {lists:duplicate(Arity, t_none()), t_unit()}} end, NewDict = dict:store(Fun, FunEntry, Dict), - init_fun_tab(Left, NewDict, TreeMap, Callgraph, Plt, Opaques); -init_fun_tab([], Dict, _TreeMap, _Callgraph, _Plt, _Opaques) -> + init_fun_tab(Left, NewDict, TreeMap, Callgraph, Plt); +init_fun_tab([], Dict, _TreeMap, _Callgraph, _Plt) -> ?debug("DICT:~p\n",[dict:to_list(Dict)]), Dict. @@ -2946,34 +3035,27 @@ state__update_fun_entry(Tree, ArgTypes, Out0, if Fun =:= top -> Out0; true -> case lookup_fun_sig(Fun, CG, Plt) of - {value, {SigRet, _}} -> t_inf(SigRet, Out0, opaque); + {value, {SigRet, _}} -> t_inf(SigRet, Out0); none -> Out0 end end, Out = t_limit(Out1, ?TYPE_LIMIT), - case dict:find(Fun, FunTab) of - {ok, {ArgTypes, OldOut}} -> - case t_is_equal(OldOut, Out) of - true -> - ?debug("Fixpoint for ~w: ~s\n", - [state__lookup_name(Fun, State), - t_to_string(t_fun(ArgTypes, Out))]), - State; - false -> - NewEntry = {ArgTypes, Out}, - ?debug("New Entry for ~w: ~s\n", - [state__lookup_name(Fun, State), - t_to_string(t_fun(ArgTypes, Out))]), - NewFunTab = dict:store(Fun, NewEntry, FunTab), - State1 = State#state{fun_tab = NewFunTab}, - state__add_work_from_fun(Tree, State1) - end; - {ok, {NewArgTypes, _OldOut}} -> - %% Can only happen in self-recursive functions. Only update the out type. - NewEntry = {NewArgTypes, Out}, + {ok, {OldArgTypes, OldOut}} = dict:find(Fun, FunTab), + SameArgs = lists:all(fun({A, B}) -> erl_types:t_is_equal(A, B) + end, lists:zip(OldArgTypes, ArgTypes)), + SameOut = t_is_equal(OldOut, Out), + if + SameArgs, SameOut -> + ?debug("Fixpoint for ~w: ~s\n", + [state__lookup_name(Fun, State), + t_to_string(t_fun(ArgTypes, Out))]), + State; + true -> + %% Can only happen in self-recursive functions. + NewEntry = {OldArgTypes, Out}, ?debug("New Entry for ~w: ~s\n", [state__lookup_name(Fun, State), - t_to_string(t_fun(NewArgTypes, Out))]), + t_to_string(t_fun(OldArgTypes, Out))]), NewFunTab = dict:store(Fun, NewEntry, FunTab), State1 = State#state{fun_tab = NewFunTab}, state__add_work_from_fun(Tree, State1) @@ -2994,7 +3076,7 @@ state__add_work_from_fun(Tree, #state{callgraph = Callgraph, %% Must filter the result for results in this module. FilteredList = [L || {ok, L} <- LabelList, dict:is_key(L, TreeMap)], ?debug("~w: Will try to add:~w\n", - [state__lookup_name(get_label(Tree), State), MFAList]), + [state__lookup_name(Label, State), MFAList]), lists:foldl(fun(L, AccState) -> state__add_work(L, AccState) end, State, FilteredList) @@ -3055,7 +3137,8 @@ forward_args(Fun, ArgTypes, #state{work = Work, fun_tab = FunTab} = State) -> case Fixpoint of true -> State; false -> - NewArgTypes = [t_sup(X, Y) || {X, Y} <- lists:zip(ArgTypes, OldArgTypes)], + NewArgTypes = [t_sup(X, Y) || + {X, Y} <- lists:zip(ArgTypes, OldArgTypes)], NewWork = add_work(Fun, Work), ?debug("~w: forwarding args ~s\n", [state__lookup_name(Fun, State), @@ -3093,7 +3176,7 @@ state__get_callgraph(#state{callgraph = Callgraph}) -> state__get_races(#state{races = Races}) -> Races. --spec state__get_records(state()) -> dict(). +-spec state__get_records(state()) -> types(). state__get_records(#state{records = Records}) -> Records. @@ -3192,7 +3275,7 @@ get_file([_|Tail]) -> get_file(Tail). is_compiler_generated(Ann) -> lists:member(compiler_generated, Ann) orelse (get_line(Ann) < 1). --spec format_args([cerl:cerl()], [erl_types:erl_type()], state()) -> +-spec format_args([cerl:cerl()], [type()], state()) -> nonempty_string(). format_args([], [], _State) -> @@ -3227,25 +3310,25 @@ format_arg(Arg) -> Default end. --spec format_type(erl_types:erl_type(), state()) -> string(). +-spec format_type(type(), state()) -> string(). format_type(Type, #state{records = R}) -> t_to_string(Type, R). --spec format_field_diffs(erl_types:erl_type(), state()) -> string(). +-spec format_field_diffs(type(), state()) -> string(). format_field_diffs(RecConstruction, #state{records = R}) -> erl_types:record_field_diffs_to_string(RecConstruction, R). --spec format_sig_args(erl_types:erl_type(), state()) -> string(). +-spec format_sig_args(type(), state()) -> string(). -format_sig_args(Type, #state{records = R}) -> - SigArgs = t_fun_args(Type), +format_sig_args(Type, #state{opaques = Opaques} = State) -> + SigArgs = t_fun_args(Type, Opaques), case SigArgs of [] -> "()"; [SArg|SArgs] -> - lists:flatten("(" ++ t_to_string(SArg, R) - ++ ["," ++ t_to_string(T, R) || T <- SArgs] ++ ")") + lists:flatten("(" ++ format_type(SArg, State) + ++ ["," ++ format_type(T, State) || T <- SArgs] ++ ")") end. format_cerl(Tree) -> |