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 32 namespace ranges { 33 struct __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 63 inline namespace __cpo { 64 inline 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 73