libstdc++-v3/testsuite/std/ranges/headers/ranges/synopsis.cc

   1 // Copyright (C) 2019-2023 Free Software Foundation, Inc.
   2 //
   3 // This file is part of the GNU ISO C++ Library.  This library is free
   4 // software; you can redistribute it and/or modify it under the
   5 // terms of the GNU General Public License as published by the
   6 // Free Software Foundation; either version 3, or (at your option)
   7 // any later version.
   8
   9 // This library is distributed in the hope that it will be useful,
  10 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  11 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12 // GNU General Public License for more details.
  13
  14 // You should have received a copy of the GNU General Public License along
  15 // with this library; see the file COPYING3.  If not see
  16 // <http://www.gnu.org/licenses/>.
  17
  18 // { dg-options "-std=gnu++2a" }
  19 // { dg-do compile { target c++2a } }
  20
  21 #include <ranges>
  22
  23 #ifndef __cpp_lib_ranges
  24 # error "Feature test macro for ranges is missing in <ranges>"
  25 #elif __cpp_lib_ranges < 201911L
  26 # error "Feature test macro for ranges has wrong value in <ranges>"
  27 #endif
  28
  29 struct R { };
  30 template<> constexpr bool std::ranges::disable_sized_range<R> = true;
  31
  32 namespace __gnu_test
  33 {
  34   constexpr const bool* disable_sized_range
  35     = &std::ranges::disable_sized_range<void>;
  36   using std::ranges::begin;
  37   using std::ranges::end;
  38   using std::ranges::cbegin;
  39   using std::ranges::cend;
  40   using std::ranges::rbegin;
  41   using std::ranges::rend;
  42   using std::ranges::crbegin;
  43   using std::ranges::crend;
  44   using std::ranges::size;
  45   using std::ranges::ssize;
  46   using std::ranges::empty;
  47   using std::ranges::data;
  48   using std::ranges::cdata;
  49
  50   using std::ranges::advance;
  51   using std::ranges::distance;
  52   using std::ranges::next;
  53   using std::ranges::prev;
  54 }