//===----------------------------------------------------------------------===//
//
// 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>
// class iterator
#include <cassert>
#include <concepts>
#include <iterator>
#include <string_view>
#include "test_macros.h"
#include "make_string.h"
template <class CharT>
TEST_CONSTEXPR_CXX14 void test_type() {
using C = std::basic_string_view<CharT>;
typename C::iterator ii1 = typename C::iterator(), ii2 = typename C::iterator();
typename C::iterator ii4 = ii1;
typename C::const_iterator cii = typename C::const_iterator();
assert(ii1 == ii2);
assert(ii1 == ii4);
assert(ii1 == cii);
assert(!(ii1 != ii2));
assert(!(ii1 != cii));
#if TEST_STD_VER >= 17
C c = MAKE_STRING_VIEW(CharT, "abc");
assert(c.begin() == std::begin(c));
assert(c.rbegin() == std::rbegin(c));
assert(c.cbegin() == std::cbegin(c));
assert(c.crbegin() == std::crbegin(c));
assert(c.end() == std::end(c));
assert(c.rend() == std::rend(c));
assert(c.cend() == std::cend(c));
assert(c.crend() == std::crend(c));
assert(std::begin(c) != std::end(c));
assert(std::rbegin(c) != std::rend(c));
assert(std::cbegin(c) != std::cend(c));
assert(std::crbegin(c) != std::crend(c));
#endif
#if TEST_STD_VER >= 20
// P1614 + LWG3352
std::same_as<std::strong_ordering> decltype(auto) r1 = ii1 <=> ii2;
assert(r1 == std::strong_ordering::equal);
std::same_as<std::strong_ordering> decltype(auto) r2 = ii1 <=> ii2;
assert(r2 == std::strong_ordering::equal);
#endif
}
TEST_CONSTEXPR_CXX14 bool test() {
test_type<char>();
#ifndef TEST_HAS_NO_WIDE_CHARACTERS
test_type<wchar_t>();
#endif
#ifndef TEST_HAS_NO_CHAR8_T
test_type<char8_t>();
#endif
test_type<char16_t>();
test_type<char32_t>();
return true;
}
int main(int, char**) {
test();
#if TEST_STD_VER >= 14
static_assert(test(), "");
#endif
return 0;
}