xref: /freebsd-src/contrib/llvm-project/libcxx/include/__algorithm/ranges_make_heap.h (revision b3edf4467982447620505a28fc82e38a414c07dc)
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_MAKE_HEAP_H
10753f127fSDimitry Andric #define _LIBCPP___ALGORITHM_RANGES_MAKE_HEAP_H
11753f127fSDimitry Andric 
12fcaf7f86SDimitry Andric #include <__algorithm/iterator_operations.h>
13753f127fSDimitry Andric #include <__algorithm/make_heap.h>
14753f127fSDimitry Andric #include <__algorithm/make_projected.h>
15753f127fSDimitry Andric #include <__concepts/same_as.h>
16753f127fSDimitry Andric #include <__config>
17753f127fSDimitry Andric #include <__functional/identity.h>
18753f127fSDimitry Andric #include <__functional/invoke.h>
19753f127fSDimitry Andric #include <__functional/ranges_operations.h>
20753f127fSDimitry Andric #include <__iterator/concepts.h>
21753f127fSDimitry Andric #include <__iterator/iterator_traits.h>
22753f127fSDimitry Andric #include <__iterator/next.h>
23753f127fSDimitry Andric #include <__iterator/projected.h>
24753f127fSDimitry Andric #include <__iterator/sortable.h>
25753f127fSDimitry Andric #include <__ranges/access.h>
26753f127fSDimitry Andric #include <__ranges/concepts.h>
27753f127fSDimitry Andric #include <__ranges/dangling.h>
28753f127fSDimitry Andric #include <__utility/forward.h>
29753f127fSDimitry Andric #include <__utility/move.h>
30753f127fSDimitry Andric 
31753f127fSDimitry Andric #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
32753f127fSDimitry Andric #  pragma GCC system_header
33753f127fSDimitry Andric #endif
34753f127fSDimitry Andric 
35*b3edf446SDimitry Andric _LIBCPP_PUSH_MACROS
36*b3edf446SDimitry Andric #include <__undef_macros>
37*b3edf446SDimitry Andric 
3806c3fb27SDimitry Andric #if _LIBCPP_STD_VER >= 20
39753f127fSDimitry Andric 
40753f127fSDimitry Andric _LIBCPP_BEGIN_NAMESPACE_STD
41753f127fSDimitry Andric 
42753f127fSDimitry Andric namespace ranges {
43753f127fSDimitry Andric namespace __make_heap {
44753f127fSDimitry Andric 
45753f127fSDimitry Andric struct __fn {
46753f127fSDimitry Andric   template <class _Iter, class _Sent, class _Comp, class _Proj>
4706c3fb27SDimitry Andric   _LIBCPP_HIDE_FROM_ABI constexpr static _Iter
__make_heap_fn_impl__fn4806c3fb27SDimitry Andric   __make_heap_fn_impl(_Iter __first, _Sent __last, _Comp& __comp, _Proj& __proj) {
49753f127fSDimitry Andric     auto __last_iter = ranges::next(__first, __last);
50753f127fSDimitry Andric 
5161cfbce3SDimitry Andric     auto&& __projected_comp = std::__make_projected(__comp, __proj);
52fcaf7f86SDimitry Andric     std::__make_heap<_RangeAlgPolicy>(std::move(__first), __last_iter, __projected_comp);
53753f127fSDimitry Andric 
54753f127fSDimitry Andric     return __last_iter;
55753f127fSDimitry Andric   }
56753f127fSDimitry Andric 
57753f127fSDimitry Andric   template <random_access_iterator _Iter, sentinel_for<_Iter> _Sent, class _Comp = ranges::less, class _Proj = identity>
58753f127fSDimitry Andric     requires sortable<_Iter, _Comp, _Proj>
5906c3fb27SDimitry Andric   _LIBCPP_HIDE_FROM_ABI constexpr _Iter
operator__fn6006c3fb27SDimitry Andric   operator()(_Iter __first, _Sent __last, _Comp __comp = {}, _Proj __proj = {}) const {
61753f127fSDimitry Andric     return __make_heap_fn_impl(std::move(__first), std::move(__last), __comp, __proj);
62753f127fSDimitry Andric   }
63753f127fSDimitry Andric 
64753f127fSDimitry Andric   template <random_access_range _Range, class _Comp = ranges::less, class _Proj = identity>
65753f127fSDimitry Andric     requires sortable<iterator_t<_Range>, _Comp, _Proj>
6606c3fb27SDimitry Andric   _LIBCPP_HIDE_FROM_ABI constexpr borrowed_iterator_t<_Range>
operator__fn6706c3fb27SDimitry Andric   operator()(_Range&& __r, _Comp __comp = {}, _Proj __proj = {}) const {
68753f127fSDimitry Andric     return __make_heap_fn_impl(ranges::begin(__r), ranges::end(__r), __comp, __proj);
69753f127fSDimitry Andric   }
70753f127fSDimitry Andric };
71753f127fSDimitry Andric 
72753f127fSDimitry Andric } // namespace __make_heap
73753f127fSDimitry Andric 
74753f127fSDimitry Andric inline namespace __cpo {
75753f127fSDimitry Andric inline constexpr auto make_heap = __make_heap::__fn{};
76753f127fSDimitry Andric } // namespace __cpo
77753f127fSDimitry Andric } // namespace ranges
78753f127fSDimitry Andric 
79753f127fSDimitry Andric _LIBCPP_END_NAMESPACE_STD
80753f127fSDimitry Andric 
8106c3fb27SDimitry Andric #endif // _LIBCPP_STD_VER >= 20
82753f127fSDimitry Andric 
83*b3edf446SDimitry Andric _LIBCPP_POP_MACROS
84*b3edf446SDimitry Andric 
85753f127fSDimitry Andric #endif // _LIBCPP___ALGORITHM_RANGES_MAKE_HEAP_H
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