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1//===----------------------------------------------------------------------===//
2//
3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4// See https://llvm.org/LICENSE.txt for license information.
5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6//
7//===----------------------------------------------------------------------===//
8
9#ifndef _LIBCPP___ALGORITHM_RANGES_UPPER_BOUND_H
10#define _LIBCPP___ALGORITHM_RANGES_UPPER_BOUND_H
11
12#include <__algorithm/iterator_operations.h>
13#include <__algorithm/lower_bound.h>
14#include <__config>
15#include <__functional/identity.h>
16#include <__functional/invoke.h>
17#include <__functional/ranges_operations.h>
18#include <__iterator/concepts.h>
19#include <__iterator/projected.h>
20#include <__ranges/access.h>
21#include <__ranges/concepts.h>
22#include <__ranges/dangling.h>
23
24#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
25# pragma GCC system_header
26#endif
27
28#if _LIBCPP_STD_VER >= 20
29
30_LIBCPP_BEGIN_NAMESPACE_STD
31
32namespace ranges {
33struct __upper_bound {
34 template <forward_iterator _Iter,
35 sentinel_for<_Iter> _Sent,
36 class _Type,
37 class _Proj = identity,
38 indirect_strict_weak_order<const _Type*, projected<_Iter, _Proj>> _Comp = ranges::less>
39 [[nodiscard]] _LIBCPP_HIDE_FROM_ABI constexpr _Iter
40 operator()(_Iter __first, _Sent __last, const _Type& __value, _Comp __comp = {}, _Proj __proj = {}) const {
41 auto __comp_lhs_rhs_swapped = [&](const auto& __lhs, const auto& __rhs) -> bool {
42 return !std::invoke(__comp, __rhs, __lhs);
43 };
44
45 return std::__lower_bound<_RangeAlgPolicy>(__first, __last, __value, __comp_lhs_rhs_swapped, __proj);
46 }
47
48 template <forward_range _Range,
49 class _Type,
50 class _Proj = identity,
51 indirect_strict_weak_order<const _Type*, projected<iterator_t<_Range>, _Proj>> _Comp = ranges::less>
52 [[nodiscard]] _LIBCPP_HIDE_FROM_ABI constexpr borrowed_iterator_t<_Range>
53 operator()(_Range&& __r, const _Type& __value, _Comp __comp = {}, _Proj __proj = {}) const {
54 auto __comp_lhs_rhs_swapped = [&](const auto& __lhs, const auto& __rhs) -> bool {
55 return !std::invoke(__comp, __rhs, __lhs);
56 };
57
58 return std::__lower_bound<_RangeAlgPolicy>(
59 ranges::begin(__r), ranges::end(__r), __value, __comp_lhs_rhs_swapped, __proj);
60 }
61};
62
63inline namespace __cpo {
64inline constexpr auto upper_bound = __upper_bound{};
65} // namespace __cpo
66} // namespace ranges
67
68_LIBCPP_END_NAMESPACE_STD
69
70#endif // _LIBCPP_STD_VER >= 20
71
72#endif // _LIBCPP___ALGORITHM_RANGES_UPPER_BOUND_H