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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-exception6//7//===----------------------------------------------------------------------===//8 9#ifndef _LIBCPP___ITERATOR_ITERATOR_WITH_DATA_H10#define _LIBCPP___ITERATOR_ITERATOR_WITH_DATA_H11 12#include <__compare/compare_three_way_result.h>13#include <__compare/three_way_comparable.h>14#include <__config>15#include <__iterator/concepts.h>16#include <__iterator/incrementable_traits.h>17#include <__iterator/iter_move.h>18#include <__iterator/iter_swap.h>19#include <__iterator/iterator_traits.h>20#include <__iterator/readable_traits.h>21#include <__utility/move.h>22 23#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)24# pragma GCC system_header25#endif26 27_LIBCPP_PUSH_MACROS28#include <__undef_macros>29 30#if _LIBCPP_STD_VER >= 2031 32_LIBCPP_BEGIN_NAMESPACE_STD33 34template <forward_iterator _Iterator, class _Data>35class __iterator_with_data {36 _Iterator __iter_{};37 _Data __data_{};38 39public:40 using value_type = iter_value_t<_Iterator>;41 using difference_type = iter_difference_t<_Iterator>;42 43 _LIBCPP_HIDE_FROM_ABI __iterator_with_data() = default;44 45 constexpr _LIBCPP_HIDE_FROM_ABI __iterator_with_data(_Iterator __iter, _Data __data)46 : __iter_(std::move(__iter)), __data_(std::move(__data)) {}47 48 constexpr _LIBCPP_HIDE_FROM_ABI _Iterator __get_iter() const { return __iter_; }49 50 constexpr _LIBCPP_HIDE_FROM_ABI _Data __get_data() && { return std::move(__data_); }51 52 friend constexpr _LIBCPP_HIDE_FROM_ABI bool53 operator==(const __iterator_with_data& __lhs, const __iterator_with_data& __rhs) {54 return __lhs.__iter_ == __rhs.__iter_;55 }56 57 constexpr _LIBCPP_HIDE_FROM_ABI __iterator_with_data& operator++() {58 ++__iter_;59 return *this;60 }61 62 constexpr _LIBCPP_HIDE_FROM_ABI __iterator_with_data operator++(int) {63 auto __tmp = *this;64 __iter_++;65 return __tmp;66 }67 68 constexpr _LIBCPP_HIDE_FROM_ABI __iterator_with_data& operator--()69 requires bidirectional_iterator<_Iterator>70 {71 --__iter_;72 return *this;73 }74 75 constexpr _LIBCPP_HIDE_FROM_ABI __iterator_with_data operator--(int)76 requires bidirectional_iterator<_Iterator>77 {78 auto __tmp = *this;79 --__iter_;80 return __tmp;81 }82 83 constexpr _LIBCPP_HIDE_FROM_ABI iter_reference_t<_Iterator> operator*() const { return *__iter_; }84 85 _LIBCPP_HIDE_FROM_ABI friend constexpr iter_rvalue_reference_t<_Iterator>86 iter_move(const __iterator_with_data& __iter) noexcept(noexcept(ranges::iter_move(__iter.__iter_))) {87 return ranges::iter_move(__iter.__iter_);88 }89 90 _LIBCPP_HIDE_FROM_ABI friend constexpr void91 iter_swap(const __iterator_with_data& __lhs,92 const __iterator_with_data& __rhs) noexcept(noexcept(ranges::iter_swap(__lhs.__iter_, __rhs.__iter_)))93 requires indirectly_swappable<_Iterator>94 {95 return ranges::iter_swap(__lhs.__data_, __rhs.__iter_);96 }97};98 99_LIBCPP_END_NAMESPACE_STD100 101#endif // _LIBCPP_STD_VER >= 20102 103_LIBCPP_POP_MACROS104 105#endif // _LIBCPP___ITERATOR_ITERATOR_WITH_DATA_H106