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
51
52
53
54
55
56
57
58
59
60
|
//===----------------------------------------------------------------------===//
//
// 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: !stdlib=libc++ && (c++03 || c++11 || c++14)
// <string_view>
// constexpr basic_string_view& operator=(const basic_string_view &) noexcept = default;
#include <string_view>
#include <cassert>
#include "test_macros.h"
template<typename T>
#if TEST_STD_VER > 11
constexpr
#endif
bool test (T sv0)
{
T sv1;
sv1 = sv0;
// We can't just say "sv0 == sv1" here because string_view::compare
// isn't constexpr until C++17, and we want to support back to C++14
return sv0.size() == sv1.size() && sv0.data() == sv1.data();
}
int main(int, char**) {
assert( test<std::string_view> ( "1234"));
#ifndef TEST_HAS_NO_CHAR8_T
assert( test<std::u8string_view> (u8"1234"));
#endif
#if TEST_STD_VER >= 11
assert( test<std::u16string_view> ( u"1234"));
assert( test<std::u32string_view> ( U"1234"));
#endif
#ifndef TEST_HAS_NO_WIDE_CHARACTERS
assert( test<std::wstring_view> ( L"1234"));
#endif
#if TEST_STD_VER > 11
static_assert( test<std::string_view> ({ "abc", 3}), "");
# ifndef TEST_HAS_NO_CHAR8_T
static_assert( test<std::u8string_view> ({u8"abc", 3}), "");
# endif
static_assert( test<std::u16string_view> ({ u"abc", 3}), "");
static_assert( test<std::u32string_view> ({ U"abc", 3}), "");
# ifndef TEST_HAS_NO_WIDE_CHARACTERS
static_assert( test<std::wstring_view> ({ L"abc", 3}), "");
# endif
#endif
return 0;
}
|
