You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
48 lines
1.5 KiB
C++
48 lines
1.5 KiB
C++
//===----------------------------------------------------------------------===//
|
|
//
|
|
// 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
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
// <string>
|
|
|
|
// template<> struct char_traits<wchar_t>
|
|
|
|
// static const char_type* find(const char_type* s, size_t n, const char_type& a);
|
|
// constexpr in C++17
|
|
|
|
#include <string>
|
|
#include <cassert>
|
|
|
|
#include "test_macros.h"
|
|
|
|
#if TEST_STD_VER > 14
|
|
constexpr bool test_constexpr()
|
|
{
|
|
constexpr const wchar_t *p = L"123";
|
|
return std::char_traits<wchar_t>::find(p, 3, L'1') == p
|
|
&& std::char_traits<wchar_t>::find(p, 3, L'2') == p + 1
|
|
&& std::char_traits<wchar_t>::find(p, 3, L'3') == p + 2
|
|
&& std::char_traits<wchar_t>::find(p, 3, L'4') == nullptr;
|
|
}
|
|
#endif
|
|
|
|
int main(int, char**)
|
|
{
|
|
wchar_t s1[] = {1, 2, 3};
|
|
assert(std::char_traits<wchar_t>::find(s1, 3, wchar_t(1)) == s1);
|
|
assert(std::char_traits<wchar_t>::find(s1, 3, wchar_t(2)) == s1+1);
|
|
assert(std::char_traits<wchar_t>::find(s1, 3, wchar_t(3)) == s1+2);
|
|
assert(std::char_traits<wchar_t>::find(s1, 3, wchar_t(4)) == 0);
|
|
assert(std::char_traits<wchar_t>::find(s1, 3, wchar_t(0)) == 0);
|
|
assert(std::char_traits<wchar_t>::find(NULL, 0, wchar_t(0)) == 0);
|
|
|
|
#if TEST_STD_VER > 14
|
|
static_assert(test_constexpr(), "" );
|
|
#endif
|
|
|
|
return 0;
|
|
}
|