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authorHans Bolinder <[email protected]>2013-03-21 15:49:01 +0100
committerHans Bolinder <[email protected]>2014-01-21 09:28:19 +0100
commit7db0bb7ae867ea5de893914a89c51dc0369b5790 (patch)
tree842d2c4f9ae3dc008484e8a29c5fa90f0fc03737 /lib/dialyzer/src/dialyzer_succ_typings.erl
parent9b92301dcae72faecdab9f5fe009a53f6d47b8a1 (diff)
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[dialyzer] Re-work the handling of opaque types
It is now OK to inspect and modify the internals of opaque types within the scope of the module. The contracts are used for decorating types with opaqueness when it is harmless to do so. The opaqueness is propagated by the typesig module and also by the dataflow module. A lot of details have been fixed or updated. In particular the modules erl_types and erl_bif_types have been modified extensively. The version in vsn.mk has been updated to 2.7. The reason is a modification of #opaque{} in erl_types. Dialyzer seems to be about five percent slower than it used to be.
Diffstat (limited to 'lib/dialyzer/src/dialyzer_succ_typings.erl')
-rw-r--r--lib/dialyzer/src/dialyzer_succ_typings.erl82
1 files changed, 76 insertions, 6 deletions
diff --git a/lib/dialyzer/src/dialyzer_succ_typings.erl b/lib/dialyzer/src/dialyzer_succ_typings.erl
index 84379642bf..f0488b5ee3 100644
--- a/lib/dialyzer/src/dialyzer_succ_typings.erl
+++ b/lib/dialyzer/src/dialyzer_succ_typings.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
@@ -149,8 +149,10 @@ get_warnings(Callgraph, Plt, DocPlt, Codeserver,
NewState = InitState#st{no_warn_unused = NoWarnUnused},
Mods = dialyzer_callgraph:modules(NewState#st.callgraph),
MiniPlt = NewState#st.plt,
+ FindOpaques = lookup_and_find_opaques_fun(Codeserver),
CWarns =
- dialyzer_contracts:get_invalid_contract_warnings(Mods, Codeserver, MiniPlt),
+ dialyzer_contracts:get_invalid_contract_warnings(Mods, Codeserver,
+ MiniPlt, FindOpaques),
MiniDocPlt = dialyzer_plt:get_mini_plt(DocPlt),
ModWarns =
?timing(TimingServer, "warning",
@@ -261,7 +263,16 @@ refine_one_module(M, {CodeServer, Callgraph, Plt, _Solvers}) ->
FunTypes = get_fun_types_from_plt(AllFuns, Callgraph, Plt),
NewFunTypes =
dialyzer_dataflow:get_fun_types(ModCode, Plt, Callgraph, Records),
- case reached_fixpoint(FunTypes, NewFunTypes) of
+ Contracts1 = dialyzer_codeserver:lookup_mod_contracts(M, CodeServer),
+ Contracts = orddict:from_list(dict:to_list(Contracts1)),
+ FindOpaques = find_opaques_fun(Records),
+ DecoratedFunTypes =
+ decorate_succ_typings(Contracts, Callgraph, NewFunTypes, FindOpaques),
+ %% ?debug("NewFunTypes ~p\n ~n", [dict:to_list(NewFunTypes)]),
+ %% ?debug("refine DecoratedFunTypes ~p\n ~n", [dict:to_list(DecoratedFunTypes)]),
+ debug_pp_functions("Refine", NewFunTypes, DecoratedFunTypes, Callgraph),
+
+ case reached_fixpoint(FunTypes, DecoratedFunTypes) of
true -> [];
{false, NotFixpoint} ->
?debug("Not fixpoint\n", []),
@@ -357,9 +368,16 @@ find_succ_types_for_scc(SCC, {Codeserver, Callgraph, Plt, Solvers}) ->
AllFunSet = sets:from_list([X || {X, _} <- AllFuns]),
FilteredFunTypes =
dict:filter(fun(X, _) -> sets:is_element(X, AllFunSet) end, FunTypes),
+ FindOpaques = lookup_and_find_opaques_fun(Codeserver),
+ DecoratedFunTypes =
+ decorate_succ_typings(Contracts3, Callgraph, FilteredFunTypes, FindOpaques),
%% Check contracts
PltContracts =
- dialyzer_contracts:check_contracts(Contracts3, Callgraph, FilteredFunTypes),
+ dialyzer_contracts:check_contracts(Contracts3, Callgraph,
+ DecoratedFunTypes, FindOpaques),
+ %% ?debug("FilteredFunTypes ~p\n ~n", [dict:to_list(FilteredFunTypes)]),
+ %% ?debug("SCC DecoratedFunTypes ~p\n ~n", [dict:to_list(DecoratedFunTypes)]),
+ debug_pp_functions("SCC", FilteredFunTypes, DecoratedFunTypes, Callgraph),
ContractFixpoint =
lists:all(fun({MFA, _C}) ->
%% Check the non-deleted PLT
@@ -368,16 +386,47 @@ find_succ_types_for_scc(SCC, {Codeserver, Callgraph, Plt, Solvers}) ->
{value, _} -> true
end
end, PltContracts),
- Plt = insert_into_plt(FilteredFunTypes, Callgraph, Plt),
+ Plt = insert_into_plt(DecoratedFunTypes, Callgraph, Plt),
Plt = dialyzer_plt:insert_contract_list(Plt, PltContracts),
case (ContractFixpoint andalso
- reached_fixpoint_strict(PropTypes, FilteredFunTypes)) of
+ reached_fixpoint_strict(PropTypes, DecoratedFunTypes)) of
true -> [];
false ->
?debug("Not fixpoint for: ~w\n", [AllFuns]),
[Fun || {Fun, _Arity} <- AllFuns]
end.
+decorate_succ_typings(Contracts, Callgraph, FunTypes, FindOpaques) ->
+ F = fun(Label, Type) ->
+ case dialyzer_callgraph:lookup_name(Label, Callgraph) of
+ {ok, MFA} ->
+ case orddict:find(MFA, Contracts) of
+ {ok, {_FileLine, Contract}} ->
+ Args = dialyzer_contracts:get_contract_args(Contract),
+ Ret = dialyzer_contracts:get_contract_return(Contract),
+ C = erl_types:t_fun(Args, Ret),
+ {M, _, _} = MFA,
+ Opaques = FindOpaques(M),
+ erl_types:t_decorate_with_opaque(Type, C, Opaques);
+ error -> Type
+ end;
+ error -> Type
+ end
+ end,
+ dict:map(F, FunTypes).
+
+lookup_and_find_opaques_fun(Codeserver) ->
+ fun(Module) ->
+ Records = dialyzer_codeserver:lookup_mod_records(Module, Codeserver),
+ (find_opaques_fun(Records))(Module)
+ end.
+
+find_opaques_fun(Records) ->
+ fun(Module) ->
+ erl_types:module_builtin_opaques(Module) ++
+ erl_types:t_opaque_from_records(Records)
+ end.
+
get_fun_types_from_plt(FunList, Callgraph, Plt) ->
get_fun_types_from_plt(FunList, Callgraph, Plt, dict:new()).
@@ -443,9 +492,30 @@ debug_pp_succ_typings(SuccTypes) ->
|| {MFA, {contract, RetFun, ArgT}} <- SuccTypes],
?debug("\n", []),
ok.
+
+debug_pp_functions(Header, FunTypes, DecoratedFunTypes, Callgraph) ->
+ ?debug("FunTypes (~s)\n", [Header]),
+ FTypes = lists:keysort(1, dict:to_list(FunTypes)),
+ DTypes = lists:keysort(1, dict:to_list(DecoratedFunTypes)),
+ Fun = fun({{Label, Type},{Label, DecoratedType}}) ->
+ Name = lookup_name(Label, Callgraph),
+ ?debug("~w (~w): ~s\n",
+ [Name, Label, erl_types:t_to_string(Type)]),
+ case erl_types:t_is_equal(Type, DecoratedType) of
+ true -> ok;
+ false ->
+ ?debug(" With opaque types: ~s\n",
+ [erl_types:t_to_string(DecoratedType)])
+ end
+ end,
+ lists:foreach(Fun, lists:zip(FTypes, DTypes)),
+ ?debug("\n", []).
-else.
debug_pp_succ_typings(_) ->
ok.
+
+debug_pp_functions(_, _, _, _) ->
+ ok.
-endif.
lookup_name(F, CG) ->