59 lines
1.7 KiB
C++
59 lines
1.7 KiB
C++
//===----------------------------------------------------------------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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// UNSUPPORTED: !stdlib=libc++ && (c++03 || c++11 || c++14)
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// <string_view>
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// constexpr basic_string_view& operator=(const basic_string_view &) noexcept = default;
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#include <string_view>
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#include <cassert>
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#include "test_macros.h"
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template <typename T>
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#if TEST_STD_VER > 11
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constexpr
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#endif
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bool
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test(T sv0) {
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T sv1;
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sv1 = sv0;
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// We can't just say "sv0 == sv1" here because string_view::compare
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// isn't constexpr until C++17, and we want to support back to C++14
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return sv0.size() == sv1.size() && sv0.data() == sv1.data();
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}
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int main(int, char**) {
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assert(test<std::string_view>("1234"));
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#ifndef TEST_HAS_NO_CHAR8_T
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assert(test<std::u8string_view>(u8"1234"));
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#endif
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#if TEST_STD_VER >= 11
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assert(test<std::u16string_view>(u"1234"));
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assert(test<std::u32string_view>(U"1234"));
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#endif
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#ifndef TEST_HAS_NO_WIDE_CHARACTERS
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assert(test<std::wstring_view>(L"1234"));
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#endif
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#if TEST_STD_VER > 11
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static_assert(test<std::string_view>({"abc", 3}), "");
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# ifndef TEST_HAS_NO_CHAR8_T
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static_assert(test<std::u8string_view>({u8"abc", 3}), "");
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# endif
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static_assert(test<std::u16string_view>({u"abc", 3}), "");
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static_assert(test<std::u32string_view>({U"abc", 3}), "");
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# ifndef TEST_HAS_NO_WIDE_CHARACTERS
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static_assert(test<std::wstring_view>({L"abc", 3}), "");
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# endif
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#endif
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return 0;
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}
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