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1//===----------------------------------------------------------------------===//2//3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.4// See https://llvm.org/LICENSE.txt for license information.5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception6//7//===----------------------------------------------------------------------===//8 9#ifndef _LIBCPP___ALGORITHM_RANGES_COUNT_H10#define _LIBCPP___ALGORITHM_RANGES_COUNT_H11 12#include <__algorithm/count.h>13#include <__algorithm/iterator_operations.h>14#include <__config>15#include <__functional/identity.h>16#include <__functional/ranges_operations.h>17#include <__iterator/concepts.h>18#include <__iterator/incrementable_traits.h>19#include <__iterator/iterator_traits.h>20#include <__iterator/projected.h>21#include <__ranges/access.h>22#include <__ranges/concepts.h>23#include <__utility/move.h>24 25#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)26# pragma GCC system_header27#endif28 29_LIBCPP_PUSH_MACROS30#include <__undef_macros>31 32#if _LIBCPP_STD_VER >= 2033 34_LIBCPP_BEGIN_NAMESPACE_STD35 36namespace ranges {37struct __count {38 template <input_iterator _Iter, sentinel_for<_Iter> _Sent, class _Type, class _Proj = identity>39 requires indirect_binary_predicate<ranges::equal_to, projected<_Iter, _Proj>, const _Type*>40 [[nodiscard]] _LIBCPP_HIDE_FROM_ABI constexpr iter_difference_t<_Iter>41 operator()(_Iter __first, _Sent __last, const _Type& __value, _Proj __proj = {}) const {42 return std::__count<_RangeAlgPolicy>(std::move(__first), std::move(__last), __value, __proj);43 }44 45 template <input_range _Range, class _Type, class _Proj = identity>46 requires indirect_binary_predicate<ranges::equal_to, projected<iterator_t<_Range>, _Proj>, const _Type*>47 [[nodiscard]] _LIBCPP_HIDE_FROM_ABI constexpr range_difference_t<_Range>48 operator()(_Range&& __r, const _Type& __value, _Proj __proj = {}) const {49 return std::__count<_RangeAlgPolicy>(ranges::begin(__r), ranges::end(__r), __value, __proj);50 }51};52 53inline namespace __cpo {54inline constexpr auto count = __count{};55} // namespace __cpo56} // namespace ranges57 58_LIBCPP_END_NAMESPACE_STD59 60#endif // _LIBCPP_STD_VER >= 2061 62_LIBCPP_POP_MACROS63 64#endif // _LIBCPP___ALGORITHM_RANGES_COUNT_H65