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1// -*- C++ -*-2//===----------------------------------------------------------------------===//3//4// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.5// See https://llvm.org/LICENSE.txt for license information.6// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception7//8//===----------------------------------------------------------------------===//9 10#ifndef _LIBCPP___ITERATOR_INSERT_ITERATOR_H11#define _LIBCPP___ITERATOR_INSERT_ITERATOR_H12 13#include <__config>14#include <__cstddef/ptrdiff_t.h>15#include <__iterator/iterator.h>16#include <__iterator/iterator_traits.h>17#include <__memory/addressof.h>18#include <__ranges/access.h>19#include <__utility/move.h>20 21#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)22# pragma GCC system_header23#endif24 25_LIBCPP_PUSH_MACROS26#include <__undef_macros>27 28_LIBCPP_BEGIN_NAMESPACE_STD29 30#if _LIBCPP_STD_VER >= 2031template <class _Container>32using __insert_iterator_iter_t _LIBCPP_NODEBUG = ranges::iterator_t<_Container>;33#else34template <class _Container>35using __insert_iterator_iter_t _LIBCPP_NODEBUG = typename _Container::iterator;36#endif37 38template <class _Container>39class insert_iterator40 : public __iterator_base<insert_iterator<_Container>, output_iterator_tag, void, void, void, void> {41protected:42 _Container* container;43 __insert_iterator_iter_t<_Container> iter;44 45public:46 typedef output_iterator_tag iterator_category;47 typedef void value_type;48#if _LIBCPP_STD_VER >= 2049 typedef ptrdiff_t difference_type;50#else51 typedef void difference_type;52#endif53 typedef void pointer;54 typedef void reference;55 typedef _Container container_type;56 57 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX2058 insert_iterator(_Container& __x, __insert_iterator_iter_t<_Container> __i)59 : container(std::addressof(__x)), iter(__i) {}60 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 insert_iterator&61 operator=(const typename _Container::value_type& __value) {62 iter = container->insert(iter, __value);63 ++iter;64 return *this;65 }66#ifndef _LIBCPP_CXX03_LANG67 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 insert_iterator&68 operator=(typename _Container::value_type&& __value) {69 iter = container->insert(iter, std::move(__value));70 ++iter;71 return *this;72 }73#endif // _LIBCPP_CXX03_LANG74 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 insert_iterator& operator*() { return *this; }75 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 insert_iterator& operator++() { return *this; }76 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 insert_iterator& operator++(int) { return *this; }77};78 79template <class _Container>80inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 insert_iterator<_Container>81inserter(_Container& __x, __insert_iterator_iter_t<_Container> __i) {82 return insert_iterator<_Container>(__x, __i);83}84 85_LIBCPP_END_NAMESPACE_STD86 87_LIBCPP_POP_MACROS88 89#endif // _LIBCPP___ITERATOR_INSERT_ITERATOR_H90