| //===----------------------------------------------------------------------===// |
| // |
| // 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; |
| } |