1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
|
//===----------------------------------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
// UNSUPPORTED: c++03, c++11
// <experimental/type_traits>
#include <experimental/type_traits>
#include <string>
#include "test_macros.h"
namespace ex = std::experimental;
template <typename T>
using callFoo = decltype(std::declval<T&>().Foo());
struct yesFoo {
int Foo() { return 0; }
};
struct noFoo {
};
struct wrongFoo {
std::string Foo() { return ""; }
};
struct convertibleFoo {
long Foo() { return 0; }
};
template <typename T, bool b>
void test() {
static_assert( b == ex::is_detected_exact <int, callFoo, T>::value, "" );
static_assert( b == ex::is_detected_exact_v<int, callFoo, T>, "" );
}
int main(int, char**) {
test<yesFoo, true>();
test<noFoo, false>();
test<wrongFoo, false>();
test<convertibleFoo, false>();
return 0;
}
|
