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 namespace __upper_bound { 34 struct __fn { 35 template <forward_iterator _Iter, 36 sentinel_for<_Iter> _Sent, 37 class _Type, 38 class _Proj = identity, 39 indirect_strict_weak_order<const _Type*, projected<_Iter, _Proj>> _Comp = ranges::less> 40 [[nodiscard]] _LIBCPP_HIDE_FROM_ABI constexpr _Iter operator__fn41 operator()(_Iter __first, _Sent __last, const _Type& __value, _Comp __comp = {}, _Proj __proj = {}) const { 42 auto __comp_lhs_rhs_swapped = [&](const auto& __lhs, const auto& __rhs) -> bool { 43 return !std::invoke(__comp, __rhs, __lhs); 44 }; 45 46 return std::__lower_bound<_RangeAlgPolicy>(__first, __last, __value, __comp_lhs_rhs_swapped, __proj); 47 } 48 49 template <forward_range _Range, 50 class _Type, 51 class _Proj = identity, 52 indirect_strict_weak_order<const _Type*, projected<iterator_t<_Range>, _Proj>> _Comp = ranges::less> 53 [[nodiscard]] _LIBCPP_HIDE_FROM_ABI constexpr borrowed_iterator_t<_Range> operator__fn54 operator()(_Range&& __r, const _Type& __value, _Comp __comp = {}, _Proj __proj = {}) const { 55 auto __comp_lhs_rhs_swapped = [&](const auto& __lhs, const auto& __rhs) -> bool { 56 return !std::invoke(__comp, __rhs, __lhs); 57 }; 58 59 return std::__lower_bound<_RangeAlgPolicy>( 60 ranges::begin(__r), ranges::end(__r), __value, __comp_lhs_rhs_swapped, __proj); 61 } 62 }; 63 } // namespace __upper_bound 64 65 inline namespace __cpo { 66 inline constexpr auto upper_bound = __upper_bound::__fn{}; 67 } // namespace __cpo 68 } // namespace ranges 69 70 _LIBCPP_END_NAMESPACE_STD 71 72 #endif // _LIBCPP_STD_VER >= 20 73 74 #endif // _LIBCPP___ALGORITHM_RANGES_UPPER_BOUND_H 75