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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_IS_SORTED_H |
| 10 | #define _LIBCPP__ALGORITHM_RANGES_IS_SORTED_H |
| 11 | |
| 12 | #include <__algorithm/ranges_is_sorted_until.h> |
| 13 | #include <__config> |
| 14 | #include <__functional/identity.h> |
| 15 | #include <__functional/ranges_operations.h> |
| 16 | #include <__iterator/concepts.h> |
| 17 | #include <__iterator/projected.h> |
| 18 | #include <__ranges/access.h> |
| 19 | #include <__ranges/concepts.h> |
| 20 | #include <__utility/move.h> |
| 21 | |
| 22 | #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) |
| 23 | # pragma GCC system_header |
| 24 | #endif |
| 25 | |
| 26 | _LIBCPP_PUSH_MACROS |
| 27 | #include <__undef_macros> |
| 28 | |
| 29 | #if _LIBCPP_STD_VER >= 20 |
| 30 | |
| 31 | _LIBCPP_BEGIN_NAMESPACE_STD |
| 32 | |
| 33 | namespace ranges { |
| 34 | struct __is_sorted { |
| 35 | template <forward_iterator _Iter, |
| 36 | sentinel_for<_Iter> _Sent, |
| 37 | class _Proj = identity, |
| 38 | indirect_strict_weak_order<projected<_Iter, _Proj>> _Comp = ranges::less> |
| 39 | [[nodiscard]] _LIBCPP_HIDE_FROM_ABI constexpr bool |
| 40 | operator()(_Iter __first, _Sent __last, _Comp __comp = {}, _Proj __proj = {}) const { |
| 41 | return ranges::__is_sorted_until_impl(std::move(__first), __last, __comp, __proj) == __last; |
| 42 | } |
| 43 | |
| 44 | template <forward_range _Range, |
| 45 | class _Proj = identity, |
| 46 | indirect_strict_weak_order<projected<iterator_t<_Range>, _Proj>> _Comp = ranges::less> |
| 47 | [[nodiscard]] _LIBCPP_HIDE_FROM_ABI constexpr bool |
| 48 | operator()(_Range&& __range, _Comp __comp = {}, _Proj __proj = {}) const { |
| 49 | auto __last = ranges::end(__range); |
| 50 | return ranges::__is_sorted_until_impl(ranges::begin(__range), __last, __comp, __proj) == __last; |
| 51 | } |
| 52 | }; |
| 53 | |
| 54 | inline namespace __cpo { |
| 55 | inline constexpr auto is_sorted = __is_sorted{}; |
| 56 | } // namespace __cpo |
| 57 | } // namespace ranges |
| 58 | |
| 59 | _LIBCPP_END_NAMESPACE_STD |
| 60 | |
| 61 | #endif // _LIBCPP_STD_VER >= 20 |
| 62 | |
| 63 | _LIBCPP_POP_MACROS |
| 64 | |
| 65 | #endif // _LIBCPP__ALGORITHM_RANGES_IS_SORTED_H |
| 66 |
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