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// -*- 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>
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), std::string_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;
std::u16string_view ufoo;
std::u32string_view Ufoo;
foo = ""sv; assert( foo.size() == 0);
foo = u8""sv; assert( foo.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);
foo = u8" "sv; assert( foo.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"));
foo = u8"ABC"sv; assert( foo == u8"ABC"); assert( foo == std::string_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), "");
}
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