forked from mirror/libcxx
You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
74 lines
2.9 KiB
C++
74 lines
2.9 KiB
C++
// -*- C++ -*-
|
|
//===----------------------------------------------------------------------===//
|
|
//
|
|
// The LLVM Compiler Infrastructure
|
|
//
|
|
// This file is dual licensed under the MIT and the University of Illinois Open
|
|
// Source Licenses. See LICENSE.TXT for details.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
// UNSUPPORTED: c++98, c++03, c++11
|
|
// UNSUPPORTED: clang-3.3, clang-3.4, clang-3.5, clang-3.6, clang-3.7, clang-3.8, clang-3.9
|
|
// UNSUPPORTED: apple-clang-6, apple-clang-7, apple-clang-8
|
|
// 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()
|
|
{
|
|
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), "");
|
|
}
|