From 4aa359570f2ba59d3efee52cae52053284daf586 Mon Sep 17 00:00:00 2001 From: Stavros Aronis Date: Tue, 12 Feb 2013 14:51:24 +0100 Subject: Support for types with the same name and different arity --- lib/dialyzer/src/dialyzer_utils.erl | 9 ++++++--- .../test/small_SUITE_data/results/types_arity | 2 ++ .../test/small_SUITE_data/src/types_arity.erl | 20 ++++++++++++++++++++ 3 files changed, 28 insertions(+), 3 deletions(-) create mode 100644 lib/dialyzer/test/small_SUITE_data/results/types_arity create mode 100644 lib/dialyzer/test/small_SUITE_data/src/types_arity.erl (limited to 'lib/dialyzer') diff --git a/lib/dialyzer/src/dialyzer_utils.erl b/lib/dialyzer/src/dialyzer_utils.erl index 8046b48838..dc8e825199 100644 --- a/lib/dialyzer/src/dialyzer_utils.erl +++ b/lib/dialyzer/src/dialyzer_utils.erl @@ -219,15 +219,18 @@ get_record_and_type_info([], _Module, Records, RecDict) -> end. add_new_type(TypeOrOpaque, Name, TypeForm, ArgForms, Module, RecDict) -> - case erl_types:type_is_defined(TypeOrOpaque, Name, RecDict) of + Arity = length(ArgForms), + case erl_types:type_is_defined(TypeOrOpaque, Name, Arity, RecDict) of true -> - throw({error, flat_format("Type ~s already defined\n", [Name])}); + Msg = flat_format("Type ~s/~w already defined\n", [Name, Arity]), + throw({error, Msg}); false -> ArgTypes = [erl_types:t_from_form(X) || X <- ArgForms], case lists:all(fun erl_types:t_is_var/1, ArgTypes) of true -> ArgNames = [erl_types:t_var_name(X) || X <- ArgTypes], - dict:store({TypeOrOpaque, Name}, {Module, TypeForm, ArgNames}, RecDict); + dict:store({TypeOrOpaque, Name, Arity}, + {Module, TypeForm, ArgNames}, RecDict); false -> throw({error, flat_format("Type declaration for ~w does not " "have variables as parameters", [Name])}) diff --git a/lib/dialyzer/test/small_SUITE_data/results/types_arity b/lib/dialyzer/test/small_SUITE_data/results/types_arity new file mode 100644 index 0000000000..02641bd167 --- /dev/null +++ b/lib/dialyzer/test/small_SUITE_data/results/types_arity @@ -0,0 +1,2 @@ + +types_arity.erl:16: Invalid type specification for function types_arity:test2/0. The success typing is () -> {'node','a','nil','nil'} diff --git a/lib/dialyzer/test/small_SUITE_data/src/types_arity.erl b/lib/dialyzer/test/small_SUITE_data/src/types_arity.erl new file mode 100644 index 0000000000..4ddc986ea8 --- /dev/null +++ b/lib/dialyzer/test/small_SUITE_data/src/types_arity.erl @@ -0,0 +1,20 @@ +-module(types_arity). + +-export([ test1/0 + , test2/0 + , test3/0 + ]). + +-export_type([tree/0, tree/1]). + +-type tree(T) :: 'nil' | {'node', T, tree(T), tree(T)}. +-type tree() :: tree(integer()). + +-spec test1() -> tree(). +test1() -> {node, 7, nil, nil}. + +-spec test2() -> tree(). +test2() -> {node, a, nil, nil}. + +-spec test3() -> tree(atom()). +test3() -> {node, a, nil, nil}. -- cgit v1.2.3