xref: /freebsd-src/contrib/llvm-project/libcxx/include/__algorithm/ranges_find_end.h (revision 0fca6ea1d4eea4c934cfff25ac9ee8ad6fe95583)
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_FIND_END_H
10753f127fSDimitry Andric #define _LIBCPP___ALGORITHM_RANGES_FIND_END_H
11753f127fSDimitry Andric 
12753f127fSDimitry Andric #include <__algorithm/find_end.h>
13753f127fSDimitry Andric #include <__algorithm/iterator_operations.h>
14fcaf7f86SDimitry Andric #include <__algorithm/ranges_iterator_concept.h>
15753f127fSDimitry Andric #include <__config>
16753f127fSDimitry Andric #include <__functional/identity.h>
17753f127fSDimitry Andric #include <__functional/ranges_operations.h>
18753f127fSDimitry Andric #include <__iterator/concepts.h>
19753f127fSDimitry Andric #include <__iterator/indirectly_comparable.h>
20753f127fSDimitry Andric #include <__iterator/iterator_traits.h>
21753f127fSDimitry Andric #include <__ranges/access.h>
22753f127fSDimitry Andric #include <__ranges/concepts.h>
23753f127fSDimitry Andric #include <__ranges/subrange.h>
24bdd1243dSDimitry Andric #include <__utility/pair.h>
25753f127fSDimitry Andric 
26753f127fSDimitry Andric #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
27753f127fSDimitry Andric #  pragma GCC system_header
28753f127fSDimitry Andric #endif
29753f127fSDimitry Andric 
30b3edf446SDimitry Andric _LIBCPP_PUSH_MACROS
31b3edf446SDimitry Andric #include <__undef_macros>
32b3edf446SDimitry Andric 
3306c3fb27SDimitry Andric #if _LIBCPP_STD_VER >= 20
34753f127fSDimitry Andric 
35753f127fSDimitry Andric _LIBCPP_BEGIN_NAMESPACE_STD
36753f127fSDimitry Andric 
37753f127fSDimitry Andric namespace ranges {
38753f127fSDimitry Andric namespace __find_end {
39753f127fSDimitry Andric struct __fn {
4006c3fb27SDimitry Andric   template <forward_iterator _Iter1,
4106c3fb27SDimitry Andric             sentinel_for<_Iter1> _Sent1,
4206c3fb27SDimitry Andric             forward_iterator _Iter2,
4306c3fb27SDimitry Andric             sentinel_for<_Iter2> _Sent2,
44753f127fSDimitry Andric             class _Pred  = ranges::equal_to,
45753f127fSDimitry Andric             class _Proj1 = identity,
46753f127fSDimitry Andric             class _Proj2 = identity>
47753f127fSDimitry Andric     requires indirectly_comparable<_Iter1, _Iter2, _Pred, _Proj1, _Proj2>
48*0fca6ea1SDimitry Andric   [[nodiscard]] _LIBCPP_HIDE_FROM_ABI constexpr subrange<_Iter1> operator()(
4906c3fb27SDimitry Andric       _Iter1 __first1,
5006c3fb27SDimitry Andric       _Sent1 __last1,
5106c3fb27SDimitry Andric       _Iter2 __first2,
5206c3fb27SDimitry Andric       _Sent2 __last2,
53753f127fSDimitry Andric       _Pred __pred   = {},
54753f127fSDimitry Andric       _Proj1 __proj1 = {},
55753f127fSDimitry Andric       _Proj2 __proj2 = {}) const {
56753f127fSDimitry Andric     auto __ret = std::__find_end_impl<_RangeAlgPolicy>(
57753f127fSDimitry Andric         __first1,
58753f127fSDimitry Andric         __last1,
59753f127fSDimitry Andric         __first2,
60753f127fSDimitry Andric         __last2,
61753f127fSDimitry Andric         __pred,
62753f127fSDimitry Andric         __proj1,
63753f127fSDimitry Andric         __proj2,
64753f127fSDimitry Andric         __iterator_concept<_Iter1>(),
65753f127fSDimitry Andric         __iterator_concept<_Iter2>());
66753f127fSDimitry Andric     return {__ret.first, __ret.second};
67753f127fSDimitry Andric   }
68753f127fSDimitry Andric 
69753f127fSDimitry Andric   template <forward_range _Range1,
70753f127fSDimitry Andric             forward_range _Range2,
71753f127fSDimitry Andric             class _Pred  = ranges::equal_to,
72753f127fSDimitry Andric             class _Proj1 = identity,
73753f127fSDimitry Andric             class _Proj2 = identity>
74753f127fSDimitry Andric     requires indirectly_comparable<iterator_t<_Range1>, iterator_t<_Range2>, _Pred, _Proj1, _Proj2>
75*0fca6ea1SDimitry Andric   [[nodiscard]] _LIBCPP_HIDE_FROM_ABI constexpr borrowed_subrange_t<_Range1> operator()(
7606c3fb27SDimitry Andric       _Range1&& __range1, _Range2&& __range2, _Pred __pred = {}, _Proj1 __proj1 = {}, _Proj2 __proj2 = {}) const {
77753f127fSDimitry Andric     auto __ret = std::__find_end_impl<_RangeAlgPolicy>(
78753f127fSDimitry Andric         ranges::begin(__range1),
79753f127fSDimitry Andric         ranges::end(__range1),
80753f127fSDimitry Andric         ranges::begin(__range2),
81753f127fSDimitry Andric         ranges::end(__range2),
82753f127fSDimitry Andric         __pred,
83753f127fSDimitry Andric         __proj1,
84753f127fSDimitry Andric         __proj2,
85753f127fSDimitry Andric         __iterator_concept<iterator_t<_Range1>>(),
86753f127fSDimitry Andric         __iterator_concept<iterator_t<_Range2>>());
87753f127fSDimitry Andric     return {__ret.first, __ret.second};
88753f127fSDimitry Andric   }
89753f127fSDimitry Andric };
90753f127fSDimitry Andric } // namespace __find_end
91753f127fSDimitry Andric 
92753f127fSDimitry Andric inline namespace __cpo {
93753f127fSDimitry Andric inline constexpr auto find_end = __find_end::__fn{};
94753f127fSDimitry Andric } // namespace __cpo
95753f127fSDimitry Andric } // namespace ranges
96753f127fSDimitry Andric 
97753f127fSDimitry Andric _LIBCPP_END_NAMESPACE_STD
98753f127fSDimitry Andric 
9906c3fb27SDimitry Andric #endif // _LIBCPP_STD_VER >= 20
100753f127fSDimitry Andric 
101b3edf446SDimitry Andric _LIBCPP_POP_MACROS
102b3edf446SDimitry Andric 
103753f127fSDimitry Andric #endif // _LIBCPP___ALGORITHM_RANGES_FIND_END_H
104