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_FIND_H 1081ad6265SDimitry Andric #define _LIBCPP___ALGORITHM_RANGES_FIND_H 1181ad6265SDimitry Andric 1206c3fb27SDimitry Andric #include <__algorithm/find.h> 1381ad6265SDimitry Andric #include <__algorithm/ranges_find_if.h> 1406c3fb27SDimitry Andric #include <__algorithm/unwrap_range.h> 1581ad6265SDimitry Andric #include <__config> 1681ad6265SDimitry Andric #include <__functional/identity.h> 1781ad6265SDimitry Andric #include <__functional/invoke.h> 1881ad6265SDimitry Andric #include <__functional/ranges_operations.h> 1981ad6265SDimitry Andric #include <__iterator/concepts.h> 2081ad6265SDimitry Andric #include <__iterator/projected.h> 2181ad6265SDimitry Andric #include <__ranges/access.h> 2281ad6265SDimitry Andric #include <__ranges/concepts.h> 2381ad6265SDimitry Andric #include <__ranges/dangling.h> 2481ad6265SDimitry Andric #include <__utility/forward.h> 2581ad6265SDimitry Andric #include <__utility/move.h> 2681ad6265SDimitry Andric 2781ad6265SDimitry Andric #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) 2881ad6265SDimitry Andric # pragma GCC system_header 2981ad6265SDimitry Andric #endif 3081ad6265SDimitry Andric 31b3edf446SDimitry Andric _LIBCPP_PUSH_MACROS 32b3edf446SDimitry Andric #include <__undef_macros> 33b3edf446SDimitry Andric 3406c3fb27SDimitry Andric #if _LIBCPP_STD_VER >= 20 3581ad6265SDimitry Andric 3681ad6265SDimitry Andric _LIBCPP_BEGIN_NAMESPACE_STD 3781ad6265SDimitry Andric 3881ad6265SDimitry Andric namespace ranges { 3981ad6265SDimitry Andric namespace __find { 4081ad6265SDimitry Andric struct __fn { 4106c3fb27SDimitry Andric template <class _Iter, class _Sent, class _Tp, class _Proj> 4206c3fb27SDimitry Andric _LIBCPP_HIDE_FROM_ABI static constexpr _Iter 4306c3fb27SDimitry Andric __find_unwrap(_Iter __first, _Sent __last, const _Tp& __value, _Proj& __proj) { 4406c3fb27SDimitry Andric if constexpr (forward_iterator<_Iter>) { 4506c3fb27SDimitry Andric auto [__first_un, __last_un] = std::__unwrap_range(__first, std::move(__last)); 4606c3fb27SDimitry Andric return std::__rewrap_range<_Sent>( 47*0fca6ea1SDimitry Andric std::move(__first), std::__find(std::move(__first_un), std::move(__last_un), __value, __proj)); 4806c3fb27SDimitry Andric } else { 49*0fca6ea1SDimitry Andric return std::__find(std::move(__first), std::move(__last), __value, __proj); 5006c3fb27SDimitry Andric } 5106c3fb27SDimitry Andric } 5206c3fb27SDimitry Andric 5381ad6265SDimitry Andric template <input_iterator _Ip, sentinel_for<_Ip> _Sp, class _Tp, class _Proj = identity> 5481ad6265SDimitry Andric requires indirect_binary_predicate<ranges::equal_to, projected<_Ip, _Proj>, const _Tp*> 55*0fca6ea1SDimitry Andric [[nodiscard]] _LIBCPP_HIDE_FROM_ABI constexpr _Ip 5606c3fb27SDimitry Andric operator()(_Ip __first, _Sp __last, const _Tp& __value, _Proj __proj = {}) const { 5706c3fb27SDimitry Andric return __find_unwrap(std::move(__first), std::move(__last), __value, __proj); 5881ad6265SDimitry Andric } 5981ad6265SDimitry Andric 6081ad6265SDimitry Andric template <input_range _Rp, class _Tp, class _Proj = identity> 6181ad6265SDimitry Andric requires indirect_binary_predicate<ranges::equal_to, projected<iterator_t<_Rp>, _Proj>, const _Tp*> 62*0fca6ea1SDimitry Andric [[nodiscard]] _LIBCPP_HIDE_FROM_ABI constexpr borrowed_iterator_t<_Rp> 6306c3fb27SDimitry Andric operator()(_Rp&& __r, const _Tp& __value, _Proj __proj = {}) const { 6406c3fb27SDimitry Andric return __find_unwrap(ranges::begin(__r), ranges::end(__r), __value, __proj); 6581ad6265SDimitry Andric } 6681ad6265SDimitry Andric }; 6781ad6265SDimitry Andric } // namespace __find 6881ad6265SDimitry Andric 6981ad6265SDimitry Andric inline namespace __cpo { 7081ad6265SDimitry Andric inline constexpr auto find = __find::__fn{}; 7181ad6265SDimitry Andric } // namespace __cpo 7281ad6265SDimitry Andric } // namespace ranges 7381ad6265SDimitry Andric 7481ad6265SDimitry Andric _LIBCPP_END_NAMESPACE_STD 7581ad6265SDimitry Andric 7606c3fb27SDimitry Andric #endif // _LIBCPP_STD_VER >= 20 7781ad6265SDimitry Andric 78b3edf446SDimitry Andric _LIBCPP_POP_MACROS 79b3edf446SDimitry Andric 8081ad6265SDimitry Andric #endif // _LIBCPP___ALGORITHM_RANGES_FIND_H 81