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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_IF_H10#define _LIBCPP___ALGORITHM_RANGES_COUNT_IF_H11 12#include <__algorithm/count_if.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_if {38 template <input_iterator _Iter,39 sentinel_for<_Iter> _Sent,40 class _Proj = identity,41 indirect_unary_predicate<projected<_Iter, _Proj>> _Predicate>42 [[nodiscard]] _LIBCPP_HIDE_FROM_ABI constexpr iter_difference_t<_Iter>43 operator()(_Iter __first, _Sent __last, _Predicate __pred, _Proj __proj = {}) const {44 return std::__count_if<_RangeAlgPolicy>(std::move(__first), std::move(__last), __pred, __proj);45 }46 47 template <input_range _Range,48 class _Proj = identity,49 indirect_unary_predicate<projected<iterator_t<_Range>, _Proj>> _Predicate>50 [[nodiscard]] _LIBCPP_HIDE_FROM_ABI constexpr range_difference_t<_Range>51 operator()(_Range&& __r, _Predicate __pred, _Proj __proj = {}) const {52 return std::__count_if<_RangeAlgPolicy>(ranges::begin(__r), ranges::end(__r), __pred, __proj);53 }54};55 56inline namespace __cpo {57inline constexpr auto count_if = __count_if{};58} // namespace __cpo59} // namespace ranges60 61_LIBCPP_END_NAMESPACE_STD62 63#endif // _LIBCPP_STD_VER >= 2064 65_LIBCPP_POP_MACROS66 67#endif // _LIBCPP___ALGORITHM_RANGES_COUNT_IF_H68