87 lines
2.1 KiB
C++
87 lines
2.1 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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// <string_view>
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// constexpr basic_string_view(const _CharT* _s, size_type _len)
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// : __data (_s), __size(_len) {}
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#include <string_view>
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#include <string>
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#include <cassert>
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#include "test_macros.h"
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template<typename CharT>
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void test ( const CharT *s, size_t sz ) {
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{
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typedef std::basic_string_view<CharT> SV;
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LIBCPP_ASSERT_NOEXCEPT(SV(s, sz));
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SV sv1 ( s, sz );
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assert ( sv1.size() == sz );
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assert ( sv1.data() == s );
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}
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}
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int main(int, char**) {
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test ( "QBCDE", 5 );
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test ( "QBCDE", 2 );
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test ( "", 0 );
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#if TEST_STD_VER > 11
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{
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constexpr const char *s = "QBCDE";
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constexpr std::basic_string_view<char> sv1 ( s, 2 );
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static_assert ( sv1.size() == 2, "" );
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static_assert ( sv1.data() == s, "" );
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}
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#endif
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test ( L"QBCDE", 5 );
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test ( L"QBCDE", 2 );
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test ( L"", 0 );
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#if TEST_STD_VER > 11
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{
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constexpr const wchar_t *s = L"QBCDE";
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constexpr std::basic_string_view<wchar_t> sv1 ( s, 2 );
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static_assert ( sv1.size() == 2, "" );
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static_assert ( sv1.data() == s, "" );
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}
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#endif
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#if TEST_STD_VER >= 11
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test ( u"QBCDE", 5 );
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test ( u"QBCDE", 2 );
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test ( u"", 0 );
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#if TEST_STD_VER > 11
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{
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constexpr const char16_t *s = u"QBCDE";
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constexpr std::basic_string_view<char16_t> sv1 ( s, 2 );
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static_assert ( sv1.size() == 2, "" );
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static_assert ( sv1.data() == s, "" );
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}
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#endif
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test ( U"QBCDE", 5 );
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test ( U"QBCDE", 2 );
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test ( U"", 0 );
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#if TEST_STD_VER > 11
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{
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constexpr const char32_t *s = U"QBCDE";
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constexpr std::basic_string_view<char32_t> sv1 ( s, 2 );
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static_assert ( sv1.size() == 2, "" );
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static_assert ( sv1.data() == s, "" );
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}
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#endif
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#endif
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return 0;
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}
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