181ad6265SDimitry Andric //===----------------------------------------------------------------------===// 281ad6265SDimitry Andric // 381ad6265SDimitry Andric // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 481ad6265SDimitry Andric // See https://llvm.org/LICENSE.txt for license information. 581ad6265SDimitry Andric // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 681ad6265SDimitry Andric // 781ad6265SDimitry Andric //===----------------------------------------------------------------------===// 881ad6265SDimitry Andric 981ad6265SDimitry Andric #ifndef _LIBCPP___ALGORITHM_RANGES_COUNT_H 1081ad6265SDimitry Andric #define _LIBCPP___ALGORITHM_RANGES_COUNT_H 1181ad6265SDimitry Andric 125f757f3fSDimitry Andric #include <__algorithm/count.h> 135f757f3fSDimitry Andric #include <__algorithm/iterator_operations.h> 1481ad6265SDimitry Andric #include <__config> 1581ad6265SDimitry Andric #include <__functional/identity.h> 1681ad6265SDimitry Andric #include <__functional/ranges_operations.h> 1781ad6265SDimitry Andric #include <__iterator/concepts.h> 1881ad6265SDimitry Andric #include <__iterator/incrementable_traits.h> 1981ad6265SDimitry Andric #include <__iterator/iterator_traits.h> 2081ad6265SDimitry Andric #include <__iterator/projected.h> 2181ad6265SDimitry Andric #include <__ranges/access.h> 2281ad6265SDimitry Andric #include <__ranges/concepts.h> 2381ad6265SDimitry Andric #include <__utility/move.h> 2481ad6265SDimitry Andric 2581ad6265SDimitry Andric #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) 2681ad6265SDimitry Andric # pragma GCC system_header 2781ad6265SDimitry Andric #endif 2881ad6265SDimitry Andric 29b3edf446SDimitry Andric _LIBCPP_PUSH_MACROS 30b3edf446SDimitry Andric #include <__undef_macros> 31b3edf446SDimitry Andric 3206c3fb27SDimitry Andric #if _LIBCPP_STD_VER >= 20 3381ad6265SDimitry Andric 3481ad6265SDimitry Andric _LIBCPP_BEGIN_NAMESPACE_STD 3581ad6265SDimitry Andric 3681ad6265SDimitry Andric namespace ranges { 3781ad6265SDimitry Andric namespace __count { 3881ad6265SDimitry Andric struct __fn { 3981ad6265SDimitry Andric template <input_iterator _Iter, sentinel_for<_Iter> _Sent, class _Type, class _Proj = identity> 4081ad6265SDimitry Andric requires indirect_binary_predicate<ranges::equal_to, projected<_Iter, _Proj>, const _Type*> 41*0fca6ea1SDimitry Andric [[nodiscard]] _LIBCPP_HIDE_FROM_ABI constexpr iter_difference_t<_Iter> 4206c3fb27SDimitry Andric operator()(_Iter __first, _Sent __last, const _Type& __value, _Proj __proj = {}) const { 435f757f3fSDimitry Andric return std::__count<_RangeAlgPolicy>(std::move(__first), std::move(__last), __value, __proj); 4481ad6265SDimitry Andric } 4581ad6265SDimitry Andric 4681ad6265SDimitry Andric template <input_range _Range, class _Type, class _Proj = identity> 4781ad6265SDimitry Andric requires indirect_binary_predicate<ranges::equal_to, projected<iterator_t<_Range>, _Proj>, const _Type*> 48*0fca6ea1SDimitry Andric [[nodiscard]] _LIBCPP_HIDE_FROM_ABI constexpr range_difference_t<_Range> 4906c3fb27SDimitry Andric operator()(_Range&& __r, const _Type& __value, _Proj __proj = {}) const { 505f757f3fSDimitry Andric return std::__count<_RangeAlgPolicy>(ranges::begin(__r), ranges::end(__r), __value, __proj); 5181ad6265SDimitry Andric } 5281ad6265SDimitry Andric }; 5381ad6265SDimitry Andric } // namespace __count 5481ad6265SDimitry Andric 5581ad6265SDimitry Andric inline namespace __cpo { 5681ad6265SDimitry Andric inline constexpr auto count = __count::__fn{}; 5781ad6265SDimitry Andric } // namespace __cpo 5881ad6265SDimitry Andric } // namespace ranges 5981ad6265SDimitry Andric 6081ad6265SDimitry Andric _LIBCPP_END_NAMESPACE_STD 6181ad6265SDimitry Andric 6206c3fb27SDimitry Andric #endif // _LIBCPP_STD_VER >= 20 6381ad6265SDimitry Andric 64b3edf446SDimitry Andric _LIBCPP_POP_MACROS 65b3edf446SDimitry Andric 6681ad6265SDimitry Andric #endif // _LIBCPP___ALGORITHM_RANGES_COUNT_H 67