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_EQUAL_RANGE_H 10 #define _LIBCPP___ALGORITHM_RANGES_EQUAL_RANGE_H 11 12 #include <__algorithm/equal_range.h> 13 #include <__algorithm/iterator_operations.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/iterator_traits.h> 20 #include <__iterator/projected.h> 21 #include <__ranges/access.h> 22 #include <__ranges/concepts.h> 23 #include <__ranges/dangling.h> 24 #include <__ranges/subrange.h> 25 #include <__utility/forward.h> 26 #include <__utility/move.h> 27 #include <__utility/pair.h> 28 29 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) 30 # pragma GCC system_header 31 #endif 32 33 _LIBCPP_PUSH_MACROS 34 #include <__undef_macros> 35 36 #if _LIBCPP_STD_VER >= 20 37 38 _LIBCPP_BEGIN_NAMESPACE_STD 39 40 namespace ranges { 41 struct __equal_range { 42 template <forward_iterator _Iter, 43 sentinel_for<_Iter> _Sent, 44 class _Tp, 45 class _Proj = identity, 46 indirect_strict_weak_order<const _Tp*, projected<_Iter, _Proj>> _Comp = ranges::less> 47 [[nodiscard]] _LIBCPP_HIDE_FROM_ABI constexpr subrange<_Iter> 48 operator()(_Iter __first, _Sent __last, const _Tp& __value, _Comp __comp = {}, _Proj __proj = {}) const { 49 auto __ret = std::__equal_range<_RangeAlgPolicy>(std::move(__first), std::move(__last), __value, __comp, __proj); 50 return {std::move(__ret.first), std::move(__ret.second)}; 51 } 52 53 template <forward_range _Range, 54 class _Tp, 55 class _Proj = identity, 56 indirect_strict_weak_order<const _Tp*, projected<iterator_t<_Range>, _Proj>> _Comp = ranges::less> 57 [[nodiscard]] _LIBCPP_HIDE_FROM_ABI constexpr borrowed_subrange_t<_Range> 58 operator()(_Range&& __range, const _Tp& __value, _Comp __comp = {}, _Proj __proj = {}) const { 59 auto __ret = 60 std::__equal_range<_RangeAlgPolicy>(ranges::begin(__range), ranges::end(__range), __value, __comp, __proj); 61 return {std::move(__ret.first), std::move(__ret.second)}; 62 } 63 }; 64 65 inline namespace __cpo { 66 inline constexpr auto equal_range = __equal_range{}; 67 } // namespace __cpo 68 } // namespace ranges 69 70 _LIBCPP_END_NAMESPACE_STD 71 72 #endif // _LIBCPP_STD_VER >= 20 73 74 _LIBCPP_POP_MACROS 75 76 #endif // _LIBCPP___ALGORITHM_RANGES_EQUAL_RANGE_H 77