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Template argument deduction for function types. 

llvm-svn: 73070
This commit is contained in:
Anders Carlsson 2009-06-08 15:19:08 +00:00
parent 06de2b5525
commit 2128ec7cdd
2 changed files with 63 additions and 0 deletions
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31
clang/lib/Sema/SemaTemplateDeduction.cpp
View File

@ -265,6 +265,37 @@ static bool DeduceTemplateArguments(ASTContext &Context, QualType Param,
return false;
}
case Type::FunctionProto: {
const FunctionProtoType *FunctionProtoArg =
dyn_cast<FunctionProtoType>(Arg);
if (!FunctionProtoArg)
return false;
const FunctionProtoType *FunctionProtoParam =
cast<FunctionProtoType>(Param);
// Check return types.
if (!DeduceTemplateArguments(Context,
FunctionProtoParam->getResultType(),
FunctionProtoArg->getResultType(),
Deduced))
return false;
if (FunctionProtoParam->getNumArgs() != FunctionProtoArg->getNumArgs())
return false;
for (unsigned I = 0, N = FunctionProtoParam->getNumArgs(); I != N; ++I) {
// Check argument types.
if (!DeduceTemplateArguments(Context,
FunctionProtoParam->getArgType(I),
FunctionProtoArg->getArgType(I),
Deduced))
return false;
}
return true;
}
default:
break;
}

32
clang/test/SemaTemplate/temp_class_spec.cpp
View File

@ -102,3 +102,35 @@ struct get_array_size<T[N]> {
};
int array_size0[get_array_size<int[12]>::value == 12? 1 : -1];
template<typename T>
struct is_unary_function {
static const bool value = false;
};
template<typename T, typename U>
struct is_unary_function<T (*)(U)> {
static const bool value = true;
};
int is_unary_function0[is_unary_function<int>::value ? -1 : 1];
int is_unary_function1[is_unary_function<int (*)()>::value ? -1 : 1];
int is_unary_function2[is_unary_function<int (*)(int, bool)>::value ? -1 : 1];
int is_unary_function3[is_unary_function<int (*)(bool)>::value ? 1 : -1];
int is_unary_function4[is_unary_function<int (*)(int)>::value ? 1 : -1];
template<typename T>
struct is_unary_function_with_same_return_type_as_argument_type {
static const bool value = false;
};
template<typename T>
struct is_unary_function_with_same_return_type_as_argument_type<T (*)(T)> {
static const bool value = true;
};
int is_unary_function5[is_unary_function_with_same_return_type_as_argument_type<int>::value ? -1 : 1];
int is_unary_function6[is_unary_function_with_same_return_type_as_argument_type<int (*)()>::value ? -1 : 1];
int is_unary_function7[is_unary_function_with_same_return_type_as_argument_type<int (*)(int, bool)>::value ? -1 : 1];
int is_unary_function8[is_unary_function_with_same_return_type_as_argument_type<int (*)(bool)>::value ? -1 : 1];
int is_unary_function9[is_unary_function_with_same_return_type_as_argument_type<int (*)(int)>::value ? 1 : -1];