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-rw-r--r--lib/dialyzer/src/dialyzer_cl.erl1
-rw-r--r--lib/dialyzer/src/dialyzer_contracts.erl79
-rw-r--r--lib/dialyzer/test/small_SUITE_data/results/contracts_with_subtypes31
-rw-r--r--lib/dialyzer/test/small_SUITE_data/src/collapse_lists/a.erl9
-rw-r--r--lib/dialyzer/test/small_SUITE_data/src/collapse_lists/b.erl5
-rw-r--r--lib/dialyzer/test/small_SUITE_data/src/contracts_with_subtypes.erl267
-rw-r--r--lib/hipe/cerl/erl_types.erl12
7 files changed, 382 insertions, 22 deletions
diff --git a/lib/dialyzer/src/dialyzer_cl.erl b/lib/dialyzer/src/dialyzer_cl.erl
index 04a0db890f..6d3b1f0531 100644
--- a/lib/dialyzer/src/dialyzer_cl.erl
+++ b/lib/dialyzer/src/dialyzer_cl.erl
@@ -188,6 +188,7 @@ plt_common(#options{init_plts = [InitPlt]} = Opts, RemoveFiles, AddFiles) ->
ok ->
case Opts#options.output_plt of
none -> ok;
+ InitPlt -> ok;
OutPlt ->
{ok, Binary} = file:read_file(InitPlt),
ok = file:write_file(OutPlt, Binary)
diff --git a/lib/dialyzer/src/dialyzer_contracts.erl b/lib/dialyzer/src/dialyzer_contracts.erl
index 2b78b736ab..76f23d00b9 100644
--- a/lib/dialyzer/src/dialyzer_contracts.erl
+++ b/lib/dialyzer/src/dialyzer_contracts.erl
@@ -344,7 +344,7 @@ insert_constraints([{subtype, Type1, Type2}|Left], Dict) ->
false ->
%% A lot of things should change to add supertypes
throw({error, io_lib:format("First argument of is_subtype constraint "
- "must be a type variable\n", [])})
+ "must be a type variable: ~p\n", [Type1])})
end;
insert_constraints([], Dict) -> Dict.
@@ -385,9 +385,8 @@ contract_from_form([{type, _L1, bounded_fun,
RecDict, FileLine, TypeAcc, FormAcc) ->
TypeFun =
fun(ExpTypes, AllRecords) ->
- Constr1 = [constraint_from_form(C, RecDict, ExpTypes, AllRecords)
- || C <- Constr],
- VarDict = insert_constraints(Constr1, dict:new()),
+ {Constr1, VarDict} =
+ process_constraints(Constr, RecDict, ExpTypes, AllRecords),
Type = erl_types:t_from_form(Form, RecDict, VarDict),
NewType = erl_types:t_solve_remote(Type, ExpTypes, AllRecords),
{NewType, Constr1}
@@ -398,18 +397,66 @@ contract_from_form([{type, _L1, bounded_fun,
contract_from_form([], _RecDict, _FileLine, TypeAcc, FormAcc) ->
{lists:reverse(TypeAcc), lists:reverse(FormAcc)}.
-constraint_from_form({type, _, constraint, [{atom, _, is_subtype},
- [Type1, Type2]]}, RecDict,
- ExpTypes, AllRecords) ->
- T1 = erl_types:t_from_form(Type1, RecDict),
- T2 = erl_types:t_from_form(Type2, RecDict),
- T3 = erl_types:t_solve_remote(T1, ExpTypes, AllRecords),
- T4 = erl_types:t_solve_remote(T2, ExpTypes, AllRecords),
- {subtype, T3, T4};
-constraint_from_form({type, _, constraint, [{atom,_,Name}, List]}, _RecDict,
- _ExpTypes, _AllRecords) ->
- N = length(List),
- throw({error, io_lib:format("Unsupported type guard ~w/~w\n", [Name, N])}).
+process_constraints(Constrs, RecDict, ExpTypes, AllRecords) ->
+ Init = initialize_constraints(Constrs, RecDict, ExpTypes, AllRecords),
+ constraints_fixpoint(Init, RecDict, ExpTypes, AllRecords).
+
+initialize_constraints(Constrs, RecDict, ExpTypes, AllRecords) ->
+ initialize_constraints(Constrs, RecDict, ExpTypes, AllRecords, []).
+
+initialize_constraints([], _RecDict, _ExpTypes, _AllRecords, Acc) ->
+ Acc;
+initialize_constraints([Constr|Rest], RecDict, ExpTypes, AllRecords, Acc) ->
+ case Constr of
+ {type, _, constraint, [{atom, _, is_subtype}, [Type1, Type2]]} ->
+ T1 = final_form(Type1, RecDict, ExpTypes, AllRecords, dict:new()),
+ Entry = {T1, Type2},
+ initialize_constraints(Rest, RecDict, ExpTypes, AllRecords, [Entry|Acc]);
+ {type, _, constraint, [{atom,_,Name}, List]} ->
+ N = length(List),
+ throw({error,
+ io_lib:format("Unsupported type guard ~w/~w\n", [Name, N])})
+ end.
+
+constraints_fixpoint(Constrs, RecDict, ExpTypes, AllRecords) ->
+ VarDict =
+ constraints_to_dict(Constrs, RecDict, ExpTypes, AllRecords, dict:new()),
+ constraints_fixpoint(VarDict, Constrs, RecDict, ExpTypes, AllRecords).
+
+constraints_fixpoint(OldVarDict, Constrs, RecDict, ExpTypes, AllRecords) ->
+ NewVarDict =
+ constraints_to_dict(Constrs, RecDict, ExpTypes, AllRecords, OldVarDict),
+ case NewVarDict of
+ OldVarDict ->
+ DictFold =
+ fun(Key, Value, Acc) ->
+ [{subtype, erl_types:t_var(Key), Value}|Acc]
+ end,
+ FinalConstrs = dict:fold(DictFold, [], NewVarDict),
+ {FinalConstrs, NewVarDict};
+ _Other ->
+ constraints_fixpoint(NewVarDict, Constrs, RecDict, ExpTypes, AllRecords)
+ end.
+
+-define(TYPE_LIMIT, 4).
+
+final_form(Form, RecDict, ExpTypes, AllRecords, VarDict) ->
+ T1 = erl_types:t_from_form(Form, RecDict, VarDict),
+ T2 = erl_types:t_solve_remote(T1, ExpTypes, AllRecords),
+ erl_types:t_limit(T2, ?TYPE_LIMIT).
+
+constraints_to_dict(Constrs, RecDict, ExpTypes, AllRecords, VarDict) ->
+ Subtypes =
+ constraints_to_subs(Constrs, RecDict, ExpTypes, AllRecords, VarDict, []),
+ insert_constraints(Subtypes, dict:new()).
+
+constraints_to_subs([], _RecDict, _ExpTypes, _AllRecords, _VarDict, Acc) ->
+ Acc;
+constraints_to_subs([C|Rest], RecDict, ExpTypes, AllRecords, VarDict, Acc) ->
+ {T1, Form2} = C,
+ T2 = final_form(Form2, RecDict, ExpTypes, AllRecords, VarDict),
+ NewAcc = [{subtype, T1, T2}|Acc],
+ constraints_to_subs(Rest, RecDict, ExpTypes, AllRecords, VarDict, NewAcc).
%% Gets the most general domain of a list of domains of all
%% the overloaded contracts
diff --git a/lib/dialyzer/test/small_SUITE_data/results/contracts_with_subtypes b/lib/dialyzer/test/small_SUITE_data/results/contracts_with_subtypes
new file mode 100644
index 0000000000..8dc0361b0d
--- /dev/null
+++ b/lib/dialyzer/test/small_SUITE_data/results/contracts_with_subtypes
@@ -0,0 +1,31 @@
+
+contracts_with_subtypes.erl:106: The call contracts_with_subtypes:rec_arg({'a','b'}) breaks the contract (Arg) -> 'ok' when is_subtype(Arg,{'a',A} | {'b',B}), is_subtype(A,'a' | {'b',B}), is_subtype(B,'b' | {'a',A})
+contracts_with_subtypes.erl:107: The call contracts_with_subtypes:rec_arg({'b','a'}) breaks the contract (Arg) -> 'ok' when is_subtype(Arg,{'a',A} | {'b',B}), is_subtype(A,'a' | {'b',B}), is_subtype(B,'b' | {'a',A})
+contracts_with_subtypes.erl:108: The call contracts_with_subtypes:rec_arg({'a',{'b','a'}}) breaks the contract (Arg) -> 'ok' when is_subtype(Arg,{'a',A} | {'b',B}), is_subtype(A,'a' | {'b',B}), is_subtype(B,'b' | {'a',A})
+contracts_with_subtypes.erl:109: The call contracts_with_subtypes:rec_arg({'b',{'a','b'}}) breaks the contract (Arg) -> 'ok' when is_subtype(Arg,{'a',A} | {'b',B}), is_subtype(A,'a' | {'b',B}), is_subtype(B,'b' | {'a',A})
+contracts_with_subtypes.erl:110: The call contracts_with_subtypes:rec_arg({'a',{'b',{'a','b'}}}) breaks the contract (Arg) -> 'ok' when is_subtype(Arg,{'a',A} | {'b',B}), is_subtype(A,'a' | {'b',B}), is_subtype(B,'b' | {'a',A})
+contracts_with_subtypes.erl:111: The call contracts_with_subtypes:rec_arg({'b',{'a',{'b','a'}}}) breaks the contract (Arg) -> 'ok' when is_subtype(Arg,{'a',A} | {'b',B}), is_subtype(A,'a' | {'b',B}), is_subtype(B,'b' | {'a',A})
+contracts_with_subtypes.erl:142: The pattern 1 can never match the type binary() | string()
+contracts_with_subtypes.erl:145: The pattern 'alpha' can never match the type {'ok',X} | {'ok',X,binary() | string()}
+contracts_with_subtypes.erl:147: The pattern 42 can never match the type {'ok',_} | {'ok',_,binary() | string()}
+contracts_with_subtypes.erl:163: The pattern 'alpha' can never match the type {'ok',X}
+contracts_with_subtypes.erl:165: The pattern 42 can never match the type {'ok',X}
+contracts_with_subtypes.erl:183: The pattern 'alpha' can never match the type {'ok',X}
+contracts_with_subtypes.erl:185: The pattern 42 can never match the type {'ok',X}
+contracts_with_subtypes.erl:202: The pattern 1 can never match the type binary() | string()
+contracts_with_subtypes.erl:205: The pattern {'ok', _} can never match the type {'ok',X,binary() | string()}
+contracts_with_subtypes.erl:206: The pattern 'alpha' can never match the type {'ok',X,binary() | string()}
+contracts_with_subtypes.erl:207: The pattern {'ok', 42} can never match the type {'ok',X,binary() | string()}
+contracts_with_subtypes.erl:208: The pattern 42 can never match the type {'ok',X,binary() | string()}
+contracts_with_subtypes.erl:234: Function flat_ets_new_t/0 has no local return
+contracts_with_subtypes.erl:235: The call contracts_with_subtypes:flat_ets_new(12,[]) breaks the contract (Name,Options) -> atom() when is_subtype(Name,atom()), is_subtype(Options,[Option]), is_subtype(Option,'set' | 'ordered_set' | 'bag' | 'duplicate_bag' | 'public' | 'protected' | 'private' | 'named_table' | {'keypos',integer()} | {'heir',pid(),term()} | {'heir','none'} | {'write_concurrency',boolean()} | {'read_concurrency',boolean()} | 'compressed')
+contracts_with_subtypes.erl:23: Invalid type specification for function contracts_with_subtypes:extract2/0. The success typing is () -> 'something'
+contracts_with_subtypes.erl:261: Function factored_ets_new_t/0 has no local return
+contracts_with_subtypes.erl:262: The call contracts_with_subtypes:factored_ets_new(12,[]) breaks the contract (Name,Options) -> atom() when is_subtype(Name,atom()), is_subtype(Options,[Option]), is_subtype(Option,Type | Access | 'named_table' | {'keypos',Pos} | {'heir',Pid::pid(),HeirData} | {'heir','none'} | Tweaks), is_subtype(Type,type()), is_subtype(Access,access()), is_subtype(Tweaks,{'write_concurrency',boolean()} | {'read_concurrency',boolean()} | 'compressed'), is_subtype(Pos,pos_integer()), is_subtype(HeirData,term())
+contracts_with_subtypes.erl:77: The call contracts_with_subtypes:foo1(5) breaks the contract (Arg1) -> Res when is_subtype(Arg1,atom()), is_subtype(Res,atom())
+contracts_with_subtypes.erl:78: The call contracts_with_subtypes:foo2(5) breaks the contract (Arg1) -> Res when is_subtype(Arg1,Arg2), is_subtype(Arg2,atom()), is_subtype(Res,atom())
+contracts_with_subtypes.erl:79: The call contracts_with_subtypes:foo3(5) breaks the contract (Arg1) -> Res when is_subtype(Arg2,atom()), is_subtype(Arg1,Arg2), is_subtype(Res,atom())
+contracts_with_subtypes.erl:7: Invalid type specification for function contracts_with_subtypes:extract/0. The success typing is () -> 'something'
+contracts_with_subtypes.erl:80: The call contracts_with_subtypes:foo4(5) breaks the contract (Type) -> Type when is_subtype(Type,atom())
+contracts_with_subtypes.erl:81: The call contracts_with_subtypes:foo5(5) breaks the contract (Type::atom()) -> Type::atom()
+contracts_with_subtypes.erl:82: The call contracts_with_subtypes:foo6(5) breaks the contract (Type) -> Type when is_subtype(Type,atom())
diff --git a/lib/dialyzer/test/small_SUITE_data/src/collapse_lists/a.erl b/lib/dialyzer/test/small_SUITE_data/src/collapse_lists/a.erl
new file mode 100644
index 0000000000..7efe870b0d
--- /dev/null
+++ b/lib/dialyzer/test/small_SUITE_data/src/collapse_lists/a.erl
@@ -0,0 +1,9 @@
+-module(a).
+-export([g/1]).
+
+-export_type([a/0, t/0]).
+-type a() :: integer().
+-type t() :: a() | maybe_improper_list(t(), t()).
+
+-spec g(t()) -> t().
+g(X) -> X.
diff --git a/lib/dialyzer/test/small_SUITE_data/src/collapse_lists/b.erl b/lib/dialyzer/test/small_SUITE_data/src/collapse_lists/b.erl
new file mode 100644
index 0000000000..b08bc5e66c
--- /dev/null
+++ b/lib/dialyzer/test/small_SUITE_data/src/collapse_lists/b.erl
@@ -0,0 +1,5 @@
+-module(b).
+-export([f/1]).
+
+-spec f(a:t()) -> a:t().
+f(X) -> a:g(X).
diff --git a/lib/dialyzer/test/small_SUITE_data/src/contracts_with_subtypes.erl b/lib/dialyzer/test/small_SUITE_data/src/contracts_with_subtypes.erl
new file mode 100644
index 0000000000..d72138d509
--- /dev/null
+++ b/lib/dialyzer/test/small_SUITE_data/src/contracts_with_subtypes.erl
@@ -0,0 +1,267 @@
+-module(contracts_with_subtypes).
+
+-compile(export_all).
+
+%===============================================================================
+
+-spec extract() -> 'ok'.
+
+extract() ->
+ case dz_extract() of
+ {ok, Val} -> Val;
+ error -> exit(boom)
+ end.
+
+-spec dz_extract() -> RetValue when
+ FileList :: something,
+ RetValue :: {ok, FileList} | error.
+
+dz_extract() -> get(foo).
+
+%-------------------------------------------------------------------------------
+
+-spec extract2() -> 'ok'.
+
+extract2() ->
+ case dz_extract2() of
+ {ok, Val} -> Val;
+ error -> exit(boom)
+ end.
+
+-spec dz_extract2() -> RetValue when
+ RetValue :: {ok, FileList} | error,
+ FileList :: something.
+
+dz_extract2() -> get(foo).
+
+%===============================================================================
+
+-spec foo1(Arg1) -> Res when
+ Arg1 :: atom(),
+ Res :: atom().
+
+foo1(X) -> X.
+
+-spec foo2(Arg1) -> Res when
+ Arg1 :: Arg2,
+ Arg2 :: atom(),
+ Res :: atom().
+
+foo2(X) -> X.
+
+-spec foo3(Arg1) -> Res when
+ Arg2 :: atom(),
+ Arg1 :: Arg2,
+ Res :: atom().
+
+foo3(X) -> X.
+
+-spec foo4(Type) -> Type when is_subtype(Type, atom()).
+
+foo4(X) -> X.
+
+-spec foo5(Type :: atom()) -> Type :: atom().
+
+foo5(X) -> X.
+
+-spec foo6(Type) -> Type when Type :: atom().
+
+foo6(X) -> X.
+
+-spec foo7(Type) -> Type.
+
+foo7(X) -> X.
+
+%-------------------------------------------------------------------------------
+
+bar(1) -> foo1(5);
+bar(2) -> foo2(5);
+bar(3) -> foo3(5);
+bar(4) -> foo4(5);
+bar(5) -> foo5(5);
+bar(6) -> foo6(5);
+bar(7) -> foo7(5).
+
+wrong_foo6() ->
+ b = foo6(a).
+
+%===============================================================================
+
+-spec rec_arg(Arg) -> ok when
+ Arg :: {a, A} | {b, B},
+ A :: a | {b, B},
+ B :: b | {a, A}.
+
+rec_arg(X) -> get(X).
+
+c(aa) -> rec_arg({a, a});
+c(bb) -> rec_arg({b, b});
+c(abb) -> rec_arg({a, {b, b}});
+c(baa) -> rec_arg({b, {a, a}});
+c(abaa) -> rec_arg({a, {b, {a, a}}});
+c(babb) -> rec_arg({b, {a, {b, b}}});
+c(ababb) -> rec_arg({a, {b, {a, {b, b}}}});
+c(babaa) -> rec_arg({b, {a, {b, {a, a}}}}).
+
+w(ab) -> rec_arg({a, b});
+w(ba) -> rec_arg({b, a});
+w(aba) -> rec_arg({a, {b, a}});
+w(bab) -> rec_arg({b, {a, b}});
+w(abab) -> rec_arg({a, {b, {a, b}}});
+w(baba) -> rec_arg({b, {a, {b, a}}});
+w(ababa) -> rec_arg({a, {b, {a, {b, a}}}});
+w(babab) -> rec_arg({b, {a, {b, {a, b}}}}).
+
+%===============================================================================
+
+-type dublo(X) :: {X, X}.
+
+-type weird(X,Y) :: {X, Y, X, X}.
+
+-spec forfun(dublo(Var)) -> ok when Var :: atom().
+
+forfun(_) -> ok.
+
+-spec forfun2(weird(Var, Var)) -> ok when Var :: atom().
+
+forfun2(_) -> ok.
+
+%===============================================================================
+
+-spec shallow(X) -> {ok, X} | {ok, X, file:filename()} | err1 | err2.
+
+shallow(X) -> get(X).
+
+st(X) when is_atom(X) ->
+ case shallow(X) of
+ err1 -> ok;
+ err2 -> ok;
+ {ok, X} -> ok;
+ {ok, X, Res} ->
+ case Res of
+ 1 -> bad;
+ _Other -> ok
+ end;
+ alpha -> bad;
+ {ok, 42} -> bad;
+ 42 -> bad
+ end.
+
+%-------------------------------------------------------------------------------
+
+-spec deep(X) -> Ret when
+ Ret :: {ok, X} | Err,
+ Err :: err1 | err2.
+
+deep(X) -> get(X).
+
+dt(X) when is_atom(X) ->
+ case deep(X) of
+ err1 -> ok;
+ err2 -> ok;
+ {ok, X} -> ok;
+ alpha -> bad;
+ {ok, 42} -> bad;
+ 42 -> bad
+ end.
+
+%-------------------------------------------------------------------------------
+
+-type local_errors() :: err1 | err2.
+
+-spec deep2(X) -> Ret when
+ Ret :: {ok, X} | Err,
+ Err :: local_errors().
+
+deep2(X) -> get(X).
+
+dt2(X) when is_atom(X) ->
+ case deep2(X) of
+ err1 -> ok;
+ err2 -> ok;
+ {ok, X} -> ok;
+ alpha -> bad;
+ {ok, 42} -> bad;
+ 42 -> bad
+ end.
+
+%-------------------------------------------------------------------------------
+
+-spec deep3(X) -> Ret when
+ Ret :: {ok, X, file:filename()} | Err,
+ Err :: local_errors().
+
+deep3(X) -> get(X).
+
+dt3(X) when is_atom(X) ->
+ case deep3(X) of
+ err1 -> ok;
+ err2 -> ok;
+ {ok, X, Res} ->
+ case Res of
+ 1 -> bad;
+ _Other -> ok
+ end;
+ {ok, X} -> bad;
+ alpha -> bad;
+ {ok, 42} -> bad;
+ 42 -> bad
+ end.
+
+%===============================================================================
+
+-spec flat_ets_new(Name, Options) -> atom() when
+ Name :: atom(),
+ Options :: [Option],
+ Option :: set
+ | ordered_set
+ | bag
+ | duplicate_bag
+ | public
+ | protected
+ | private
+ | named_table
+ | {keypos, integer()}
+ | {heir, pid(), term()}
+ | {heir, none}
+ | {write_concurrency, boolean()}
+ | {read_concurrency, boolean()}
+ | compressed.
+
+flat_ets_new(Name, Options) ->
+ get({Name, Options}).
+
+flat_ets_new_t() ->
+ flat_ets_new(12,[]),
+ flat_ets_new({a,b},[]),
+ flat_ets_new(name,[foo]),
+ flat_ets_new(name,{bag}),
+ flat_ets_new(name,bag),
+ ok.
+
+-type access() :: public | protected | private.
+-type type() :: set | ordered_set | bag | duplicate_bag.
+
+-spec factored_ets_new(Name, Options) -> atom() when
+ Name :: atom(),
+ Options :: [Option],
+ Option :: Type | Access | named_table | {keypos,Pos}
+ | {heir, Pid :: pid(), HeirData} | {heir, none} | Tweaks,
+ Type :: type(),
+ Access :: access(),
+ Tweaks :: {write_concurrency, boolean()}
+ | {read_concurrency, boolean()}
+ | compressed,
+ Pos :: pos_integer(),
+ HeirData :: term().
+
+factored_ets_new(Name, Options) ->
+ get({Name, Options}).
+
+factored_ets_new_t() ->
+ factored_ets_new(12,[]),
+ factored_ets_new({a,b},[]),
+ factored_ets_new(name,[foo]),
+ factored_ets_new(name,{bag}),
+ factored_ets_new(name,bag),
+ ok.
diff --git a/lib/hipe/cerl/erl_types.erl b/lib/hipe/cerl/erl_types.erl
index ceec31742e..1789fc79fa 100644
--- a/lib/hipe/cerl/erl_types.erl
+++ b/lib/hipe/cerl/erl_types.erl
@@ -2555,8 +2555,8 @@ t_subst_dict(?list(Contents, Termination, Size), Dict) ->
?nil -> ?list(NewContents, ?nil, Size);
?any -> ?list(NewContents, ?any, Size);
Other ->
- ?list(NewContents, NewTermination, _) = t_cons(NewContents, Other),
- ?list(NewContents, NewTermination, Size)
+ ?list(NewContents2, NewTermination, _) = t_cons(NewContents, Other),
+ ?list(NewContents2, NewTermination, Size)
end
end;
t_subst_dict(?function(Domain, Range), Dict) ->
@@ -2597,8 +2597,8 @@ t_subst_aux(?list(Contents, Termination, Size), VarMap) ->
?nil -> ?list(NewContents, ?nil, Size);
?any -> ?list(NewContents, ?any, Size);
Other ->
- ?list(NewContents, NewTermination, _) = t_cons(NewContents, Other),
- ?list(NewContents, NewTermination, Size)
+ ?list(NewContents2, NewTermination, _) = t_cons(NewContents, Other),
+ ?list(NewContents2, NewTermination, Size)
end
end;
t_subst_aux(?function(Domain, Range), VarMap) ->
@@ -3186,8 +3186,8 @@ t_abstract_records(?list(Contents, Termination, Size), RecDict) ->
?nil -> ?list(NewContents, ?nil, Size);
?any -> ?list(NewContents, ?any, Size);
Other ->
- ?list(NewContents, NewTermination, _) = t_cons(NewContents, Other),
- ?list(NewContents, NewTermination, Size)
+ ?list(NewContents2, NewTermination, _) = t_cons(NewContents, Other),
+ ?list(NewContents2, NewTermination, Size)
end
end;
t_abstract_records(?function(Domain, Range), RecDict) ->
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-07 20:21:20 +0000