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// -*- C++ -*-
//===----------------------------------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
#ifndef _LIBCPP___ITERATOR_RANGES_ITERATOR_TRAITS_H
#define _LIBCPP___ITERATOR_RANGES_ITERATOR_TRAITS_H
#include <__config>
#include <__fwd/pair.h>
#include <__ranges/concepts.h>
#include <__type_traits/add_const.h>
#include <__type_traits/remove_const.h>
#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
# pragma GCC system_header
#endif
_LIBCPP_BEGIN_NAMESPACE_STD
#if _LIBCPP_STD_VER >= 23
template <ranges::input_range _Range>
using __range_key_type = __remove_const_t<typename ranges::range_value_t<_Range>::first_type>;
template <ranges::input_range _Range>
using __range_mapped_type = typename ranges::range_value_t<_Range>::second_type;
template <ranges::input_range _Range>
using __range_to_alloc_type =
pair<add_const_t<typename ranges::range_value_t<_Range>::first_type>,
typename ranges::range_value_t<_Range>::second_type>;
#endif
_LIBCPP_END_NAMESPACE_STD
#endif // _LIBCPP___ITERATOR_RANGES_ITERATOR_TRAITS_H
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