66 lines
1.4 KiB
C++
66 lines
1.4 KiB
C++
//===----------------------------------------------------------------------===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is dual licensed under the MIT and the University of Illinois Open
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// Source Licenses. See LICENSE.TXT for details.
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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)
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// : __data (_s), __size(_Traits::length(_s)) {}
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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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#include "constexpr_char_traits.hpp"
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template<typename CharT>
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size_t StrLen ( const CharT *s ) {
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size_t retVal = 0;
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while ( *s != 0 ) { ++retVal; ++s; }
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return retVal;
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}
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template<typename CharT>
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void test ( const CharT *s ) {
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std::basic_string_view<CharT> sv1 ( s );
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assert ( sv1.size() == StrLen( s ));
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assert ( sv1.data() == s );
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}
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int main () {
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test ( "QBCDE" );
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test ( "A" );
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test ( "" );
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test ( L"QBCDE" );
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test ( L"A" );
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test ( L"" );
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#if TEST_STD_VER >= 11
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test ( u"QBCDE" );
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test ( u"A" );
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test ( u"" );
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test ( U"QBCDE" );
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test ( U"A" );
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test ( U"" );
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#endif
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#if TEST_STD_VER > 11
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{
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constexpr std::basic_string_view<char, constexpr_char_traits<char>> sv1 ( "ABCDE" );
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static_assert ( sv1.size() == 5, "");
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}
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#endif
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}
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