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// -*- C++ -*-
//===----------------------------------------------------------------------===//
//
// 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: c++03, c++11
// Note: libc++ supports string_view before C++17, but literals were introduced in C++14
#include <string_view>
#include <cassert>
#include "test_macros.h"
#if defined(__cpp_lib_char8_t) && __cpp_lib_char8_t >= 201811L
typedef std::u8string_view u8string_view;
#else
typedef std::string_view u8string_view;
#endif
int main(int, char**)
{
using namespace std::literals::string_view_literals;
static_assert ( std::is_same<decltype( "Hi"sv), std::string_view>::value, "" );
static_assert ( std::is_same<decltype( u8"Hi"sv), u8string_view>::value, "" );
static_assert ( std::is_same<decltype( L"Hi"sv), std::wstring_view>::value, "" );
static_assert ( std::is_same<decltype( u"Hi"sv), std::u16string_view>::value, "" );
static_assert ( std::is_same<decltype( U"Hi"sv), std::u32string_view>::value, "" );
std::string_view foo;
std::wstring_view Lfoo;
u8string_view u8foo;
std::u16string_view ufoo;
std::u32string_view Ufoo;
foo = ""sv; assert( foo.size() == 0);
u8foo = u8""sv; assert(u8foo.size() == 0);
Lfoo = L""sv; assert( Lfoo.size() == 0);
ufoo = u""sv; assert( ufoo.size() == 0);
Ufoo = U""sv; assert( Ufoo.size() == 0);
foo = " "sv; assert( foo.size() == 1);
u8foo = u8" "sv; assert(u8foo.size() == 1);
Lfoo = L" "sv; assert( Lfoo.size() == 1);
ufoo = u" "sv; assert( ufoo.size() == 1);
Ufoo = U" "sv; assert( Ufoo.size() == 1);
foo = "ABC"sv; assert( foo == "ABC"); assert( foo == std::string_view ( "ABC"));
u8foo = u8"ABC"sv; assert(u8foo == u8"ABC"); assert(u8foo == u8string_view (u8"ABC"));
Lfoo = L"ABC"sv; assert( Lfoo == L"ABC"); assert( Lfoo == std::wstring_view ( L"ABC"));
ufoo = u"ABC"sv; assert( ufoo == u"ABC"); assert( ufoo == std::u16string_view( u"ABC"));
Ufoo = U"ABC"sv; assert( Ufoo == U"ABC"); assert( Ufoo == std::u32string_view( U"ABC"));
static_assert( "ABC"sv.size() == 3, "");
static_assert(u8"ABC"sv.size() == 3, "");
static_assert( L"ABC"sv.size() == 3, "");
static_assert( u"ABC"sv.size() == 3, "");
static_assert( U"ABC"sv.size() == 3, "");
static_assert(noexcept( "ABC"sv), "");
static_assert(noexcept(u8"ABC"sv), "");
static_assert(noexcept( L"ABC"sv), "");
static_assert(noexcept( u"ABC"sv), "");
static_assert(noexcept( U"ABC"sv), "");
return 0;
}
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