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// Copyright (C) 2019-2025 Free Software Foundation, Inc.
//
// This file is part of the GNU ISO C++ Library. This library is free
// software; you can redistribute it and/or modify it under the
// terms of the GNU General Public License as published by the
// Free Software Foundation; either version 3, or (at your option)
// any later version.
// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
// You should have received a copy of the GNU General Public License along
// with this library; see the file COPYING3. If not see
// <http://www.gnu.org/licenses/>.
// { dg-do compile { target c++20 } }
#include <ranges>
#include <testsuite_iterators.h>
static_assert( std::ranges::range<int(&)[1]> );
static_assert( std::ranges::range<const int(&)[1]> );
static_assert( std::ranges::range<int[1]> );
static_assert( !std::ranges::range<int*> );
using namespace __gnu_test;
static_assert( std::ranges::range<test_contiguous_range<int>> );
static_assert( std::ranges::range<test_contiguous_range<int>&> );
static_assert( std::ranges::range<test_random_access_range<int>> );
static_assert( std::ranges::range<test_random_access_range<int>&> );
static_assert( std::ranges::range<test_bidirectional_range<int>> );
static_assert( std::ranges::range<test_bidirectional_range<int>&> );
static_assert( std::ranges::range<test_forward_range<int>> );
static_assert( std::ranges::range<test_forward_range<int>&> );
static_assert( std::ranges::range<test_input_range<int>> );
static_assert( std::ranges::range<test_input_range<int>&> );
static_assert( std::ranges::range<test_output_range<int>> );
static_assert( std::ranges::range<test_output_range<int>&> );
static_assert( std::ranges::range<test_contiguous_sized_range<int>> );
static_assert( std::ranges::range<test_contiguous_sized_range<int>&> );
static_assert( std::ranges::range<test_random_access_sized_range<int>> );
static_assert( std::ranges::range<test_random_access_sized_range<int>&> );
static_assert( std::ranges::range<test_bidirectional_sized_range<int>> );
static_assert( std::ranges::range<test_bidirectional_sized_range<int>&> );
static_assert( std::ranges::range<test_forward_sized_range<int>> );
static_assert( std::ranges::range<test_forward_sized_range<int>&> );
static_assert( std::ranges::range<test_input_sized_range<int>> );
static_assert( std::ranges::range<test_input_sized_range<int>&> );
static_assert( std::ranges::range<test_output_sized_range<int>> );
static_assert( std::ranges::range<test_output_sized_range<int>&> );
using std::same_as;
using C = test_contiguous_range<char>;
using R = test_random_access_range<char>;
using I = test_input_range<char>;
using O = test_output_range<char>;
static_assert( same_as<std::ranges::iterator_t<C>,
contiguous_iterator_wrapper<char>> );
static_assert( same_as<std::ranges::iterator_t<O>,
decltype(std::declval<O&>().begin())> );
static_assert( same_as<std::ranges::sentinel_t<C>,
decltype(std::declval<C&>().end())> );
static_assert( same_as<std::ranges::sentinel_t<O>,
decltype(std::declval<O&>().end())> );
static_assert( ! same_as<std::ranges::range_difference_t<C>,
std::ptrdiff_t> ); // __detail::__max_diff_type
static_assert( same_as<std::ranges::range_difference_t<R>,
std::ptrdiff_t> );
static_assert( same_as<std::ranges::range_difference_t<O>,
std::ptrdiff_t> );
static_assert( same_as<std::ranges::range_reference_t<I>,
char&> );
static_assert( same_as<std::ranges::range_reference_t<O>,
WritableObject<char>> );
static_assert( same_as<std::ranges::range_rvalue_reference_t<I>,
char&&> );
static_assert( same_as<std::ranges::range_rvalue_reference_t<O>,
WritableObject<char>> );
// LWG 3860. range_common_reference_t is missing
static_assert( same_as<std::ranges::range_common_reference_t<C>,
char&> );
static_assert( same_as<std::ranges::range_common_reference_t<I>,
char&> );
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