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_IS_PARTITIONED_H 1081ad6265SDimitry Andric #define _LIBCPP___ALGORITHM_RANGES_IS_PARTITIONED_H 1181ad6265SDimitry Andric 1281ad6265SDimitry Andric #include <__config> 1381ad6265SDimitry Andric #include <__functional/identity.h> 1481ad6265SDimitry Andric #include <__functional/invoke.h> 1581ad6265SDimitry Andric #include <__iterator/concepts.h> 1681ad6265SDimitry Andric #include <__iterator/indirectly_comparable.h> 1781ad6265SDimitry Andric #include <__iterator/projected.h> 1881ad6265SDimitry Andric #include <__ranges/access.h> 1981ad6265SDimitry Andric #include <__ranges/concepts.h> 2081ad6265SDimitry Andric #include <__utility/move.h> 2181ad6265SDimitry Andric 2281ad6265SDimitry Andric #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) 2381ad6265SDimitry Andric # pragma GCC system_header 2481ad6265SDimitry Andric #endif 2581ad6265SDimitry Andric 26b3edf446SDimitry Andric _LIBCPP_PUSH_MACROS 27b3edf446SDimitry Andric #include <__undef_macros> 28b3edf446SDimitry Andric 2906c3fb27SDimitry Andric #if _LIBCPP_STD_VER >= 20 3081ad6265SDimitry Andric 3181ad6265SDimitry Andric _LIBCPP_BEGIN_NAMESPACE_STD 3281ad6265SDimitry Andric 3381ad6265SDimitry Andric namespace ranges { 3481ad6265SDimitry Andric namespace __is_partitioned { 3581ad6265SDimitry Andric struct __fn { 3681ad6265SDimitry Andric template <class _Iter, class _Sent, class _Proj, class _Pred> 3706c3fb27SDimitry Andric _LIBCPP_HIDE_FROM_ABI constexpr static bool 3806c3fb27SDimitry Andric __is_partitioned_impl(_Iter __first, _Sent __last, _Pred& __pred, _Proj& __proj) { 3981ad6265SDimitry Andric for (; __first != __last; ++__first) { 4081ad6265SDimitry Andric if (!std::invoke(__pred, std::invoke(__proj, *__first))) 4181ad6265SDimitry Andric break; 4281ad6265SDimitry Andric } 4381ad6265SDimitry Andric 4481ad6265SDimitry Andric if (__first == __last) 4581ad6265SDimitry Andric return true; 4681ad6265SDimitry Andric ++__first; 4781ad6265SDimitry Andric 4881ad6265SDimitry Andric for (; __first != __last; ++__first) { 4981ad6265SDimitry Andric if (std::invoke(__pred, std::invoke(__proj, *__first))) 5081ad6265SDimitry Andric return false; 5181ad6265SDimitry Andric } 5281ad6265SDimitry Andric 5381ad6265SDimitry Andric return true; 5481ad6265SDimitry Andric } 5581ad6265SDimitry Andric 5606c3fb27SDimitry Andric template <input_iterator _Iter, 5706c3fb27SDimitry Andric sentinel_for<_Iter> _Sent, 5881ad6265SDimitry Andric class _Proj = identity, 5981ad6265SDimitry Andric indirect_unary_predicate<projected<_Iter, _Proj>> _Pred> 60*0fca6ea1SDimitry Andric [[nodiscard]] _LIBCPP_HIDE_FROM_ABI constexpr bool 6106c3fb27SDimitry Andric operator()(_Iter __first, _Sent __last, _Pred __pred, _Proj __proj = {}) const { 6206c3fb27SDimitry Andric return __is_partitioned_impl(std::move(__first), std::move(__last), __pred, __proj); 6381ad6265SDimitry Andric } 6481ad6265SDimitry Andric 6581ad6265SDimitry Andric template <input_range _Range, 6681ad6265SDimitry Andric class _Proj = identity, 6781ad6265SDimitry Andric indirect_unary_predicate<projected<iterator_t<_Range>, _Proj>> _Pred> 68*0fca6ea1SDimitry Andric [[nodiscard]] _LIBCPP_HIDE_FROM_ABI constexpr bool 6906c3fb27SDimitry Andric operator()(_Range&& __range, _Pred __pred, _Proj __proj = {}) const { 7006c3fb27SDimitry Andric return __is_partitioned_impl(ranges::begin(__range), ranges::end(__range), __pred, __proj); 7181ad6265SDimitry Andric } 7281ad6265SDimitry Andric }; 7381ad6265SDimitry Andric } // namespace __is_partitioned 7481ad6265SDimitry Andric 7581ad6265SDimitry Andric inline namespace __cpo { 7681ad6265SDimitry Andric inline constexpr auto is_partitioned = __is_partitioned::__fn{}; 7781ad6265SDimitry Andric } // namespace __cpo 7881ad6265SDimitry Andric } // namespace ranges 7981ad6265SDimitry Andric 8081ad6265SDimitry Andric _LIBCPP_END_NAMESPACE_STD 8181ad6265SDimitry Andric 8206c3fb27SDimitry Andric #endif // _LIBCPP_STD_VER >= 20 8381ad6265SDimitry Andric 84b3edf446SDimitry Andric _LIBCPP_POP_MACROS 85b3edf446SDimitry Andric 8681ad6265SDimitry Andric #endif // _LIBCPP___ALGORITHM_RANGES_IS_PARTITIONED_H 87