libstdc++-v3/testsuite/21_strings/basic_string_view/literals/types.cc

   1 // { dg-options "-std=gnu++17" }
   2 // { dg-do compile }
   3
   4 // Copyright (C) 2013-2019 Free Software Foundation, Inc.
   5 //
   6 // This file is part of the GNU ISO C++ Library.  This library is free
   7 // software; you can redistribute it and/or modify it under the
   8 // terms of the GNU General Public License as published by the
   9 // Free Software Foundation; either version 3, or (at your option)
  10 // any later version.
  11
  12 // This library is distributed in the hope that it will be useful,
  13 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  14 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15 // GNU General Public License for more details.
  16
  17 // You should have received a copy of the GNU General Public License along
  18 // with this library; see the file COPYING3.  If not see
  19 // <http://www.gnu.org/licenses/>.
  20
  21 #include <string_view>
  22 #include <type_traits>
  23
  24 #ifdef _GLIBCXX_USE_CHAR8_T
  25 using std::u8string_view;
  26 #else
  27 using u8string_view = std::string_view;
  28 #endif
  29
  30 void
  31 test01()
  32 {
  33   using namespace std::literals::string_view_literals;
  34
  35   static_assert(std::is_same<decltype("Hello"sv), std::string_view>::value,
  36                 "\"Hello\"s is std::string_view");
  37
  38   static_assert(std::is_same<decltype(u8"Hello"sv), u8string_view>::value,
  39                 "u8\"Hello\"s is std::string_view");
  40
  41 #ifdef _GLIBCXX_USE_WCHAR_T
  42   static_assert(std::is_same<decltype(L"Hello"sv), std::wstring_view>::value,
  43                 "L\"Hello\"s is std::wstring_view");
  44 #endif
  45
  46   static_assert(std::is_same<decltype(u"Hello"sv), std::u16string_view>::value,
  47                 "u\"Hello\"s is std::u16string_view");
  48
  49   static_assert(std::is_same<decltype(U"Hello"sv), std::u32string_view>::value,
  50                 "U\"Hello\"s is std::u32string_view");
  51 }