1753f127fSDimitry Andric //===----------------------------------------------------------------------===// 2753f127fSDimitry Andric // 3753f127fSDimitry Andric // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4753f127fSDimitry Andric // See https://llvm.org/LICENSE.txt for license information. 5753f127fSDimitry Andric // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 6753f127fSDimitry Andric // 7753f127fSDimitry Andric //===----------------------------------------------------------------------===// 8753f127fSDimitry Andric 9753f127fSDimitry Andric #ifndef _LIBCPP___ALGORITHM_RANGES_IS_HEAP_H 10753f127fSDimitry Andric #define _LIBCPP___ALGORITHM_RANGES_IS_HEAP_H 11753f127fSDimitry Andric 12972a253aSDimitry Andric #include <__algorithm/is_heap_until.h> 13753f127fSDimitry Andric #include <__algorithm/make_projected.h> 14753f127fSDimitry Andric #include <__config> 15753f127fSDimitry Andric #include <__functional/identity.h> 16753f127fSDimitry Andric #include <__functional/ranges_operations.h> 17753f127fSDimitry Andric #include <__iterator/concepts.h> 18753f127fSDimitry Andric #include <__iterator/iterator_traits.h> 19972a253aSDimitry Andric #include <__iterator/next.h> 20753f127fSDimitry Andric #include <__iterator/projected.h> 21753f127fSDimitry Andric #include <__ranges/access.h> 22753f127fSDimitry Andric #include <__ranges/concepts.h> 23753f127fSDimitry Andric #include <__utility/move.h> 24753f127fSDimitry Andric 25753f127fSDimitry Andric #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) 26753f127fSDimitry Andric # pragma GCC system_header 27753f127fSDimitry Andric #endif 28753f127fSDimitry Andric 29b3edf446SDimitry Andric _LIBCPP_PUSH_MACROS 30b3edf446SDimitry Andric #include <__undef_macros> 31b3edf446SDimitry Andric 3206c3fb27SDimitry Andric #if _LIBCPP_STD_VER >= 20 33753f127fSDimitry Andric 34753f127fSDimitry Andric _LIBCPP_BEGIN_NAMESPACE_STD 35753f127fSDimitry Andric 36753f127fSDimitry Andric namespace ranges { 37753f127fSDimitry Andric namespace __is_heap { 38753f127fSDimitry Andric 39753f127fSDimitry Andric struct __fn { 40972a253aSDimitry Andric template <class _Iter, class _Sent, class _Proj, class _Comp> 4106c3fb27SDimitry Andric _LIBCPP_HIDE_FROM_ABI constexpr static bool 4206c3fb27SDimitry Andric __is_heap_fn_impl(_Iter __first, _Sent __last, _Comp& __comp, _Proj& __proj) { 43972a253aSDimitry Andric auto __last_iter = ranges::next(__first, __last); 4461cfbce3SDimitry Andric auto&& __projected_comp = std::__make_projected(__comp, __proj); 45972a253aSDimitry Andric 46972a253aSDimitry Andric auto __result = std::__is_heap_until(std::move(__first), std::move(__last_iter), __projected_comp); 47972a253aSDimitry Andric return __result == __last; 48972a253aSDimitry Andric } 49972a253aSDimitry Andric 5006c3fb27SDimitry Andric template <random_access_iterator _Iter, 5106c3fb27SDimitry Andric sentinel_for<_Iter> _Sent, 5206c3fb27SDimitry Andric class _Proj = identity, 53753f127fSDimitry Andric indirect_strict_weak_order<projected<_Iter, _Proj>> _Comp = ranges::less> 54*0fca6ea1SDimitry Andric [[nodiscard]] _LIBCPP_HIDE_FROM_ABI constexpr bool 5506c3fb27SDimitry Andric operator()(_Iter __first, _Sent __last, _Comp __comp = {}, _Proj __proj = {}) const { 56972a253aSDimitry Andric return __is_heap_fn_impl(std::move(__first), std::move(__last), __comp, __proj); 57753f127fSDimitry Andric } 58753f127fSDimitry Andric 5906c3fb27SDimitry Andric template <random_access_range _Range, 6006c3fb27SDimitry Andric class _Proj = identity, 61753f127fSDimitry Andric indirect_strict_weak_order<projected<iterator_t<_Range>, _Proj>> _Comp = ranges::less> 62*0fca6ea1SDimitry Andric [[nodiscard]] _LIBCPP_HIDE_FROM_ABI constexpr bool 6306c3fb27SDimitry Andric operator()(_Range&& __range, _Comp __comp = {}, _Proj __proj = {}) const { 64972a253aSDimitry Andric return __is_heap_fn_impl(ranges::begin(__range), ranges::end(__range), __comp, __proj); 65753f127fSDimitry Andric } 66753f127fSDimitry Andric }; 67753f127fSDimitry Andric 68753f127fSDimitry Andric } // namespace __is_heap 69753f127fSDimitry Andric 70753f127fSDimitry Andric inline namespace __cpo { 71753f127fSDimitry Andric inline constexpr auto is_heap = __is_heap::__fn{}; 72753f127fSDimitry Andric } // namespace __cpo 73753f127fSDimitry Andric } // namespace ranges 74753f127fSDimitry Andric 75753f127fSDimitry Andric _LIBCPP_END_NAMESPACE_STD 76753f127fSDimitry Andric 7706c3fb27SDimitry Andric #endif // _LIBCPP_STD_VER >= 20 78753f127fSDimitry Andric 79b3edf446SDimitry Andric _LIBCPP_POP_MACROS 80b3edf446SDimitry Andric 81753f127fSDimitry Andric #endif // _LIBCPP___ALGORITHM_RANGES_IS_HEAP_H 82