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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-exception
7//
8//===----------------------------------------------------------------------===//
9
10#ifndef _LIBCPP___CXX03___ITERATOR_INSERT_ITERATOR_H
11#define _LIBCPP___CXX03___ITERATOR_INSERT_ITERATOR_H
12
13#include <__cxx03/__config>
14#include <__cxx03/__iterator/iterator.h>
15#include <__cxx03/__iterator/iterator_traits.h>
16#include <__cxx03/__memory/addressof.h>
17#include <__cxx03/__utility/move.h>
18#include <__cxx03/cstddef>
19
20#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
21# pragma GCC system_header
22#endif
23
24_LIBCPP_PUSH_MACROS
25#include <__cxx03/__undef_macros>
26
27_LIBCPP_BEGIN_NAMESPACE_STD
28
29template <class _Container>
30using __insert_iterator_iter_t = typename _Container::iterator;
31
32_LIBCPP_SUPPRESS_DEPRECATED_PUSH
33template <class _Container>
34class _LIBCPP_TEMPLATE_VIS insert_iterator : public iterator<output_iterator_tag, void, void, void, void> {
35 _LIBCPP_SUPPRESS_DEPRECATED_POP
36
37protected:
38 _Container* container;
39 __insert_iterator_iter_t<_Container> iter;
40
41public:
42 typedef output_iterator_tag iterator_category;
43 typedef void value_type;
44 typedef void difference_type;
45 typedef void pointer;
46 typedef void reference;
47 typedef _Container container_type;
48
49 _LIBCPP_HIDE_FROM_ABI insert_iterator(_Container& __x, __insert_iterator_iter_t<_Container> __i)
50 : container(std::addressof(__x)), iter(__i) {}
51 _LIBCPP_HIDE_FROM_ABI insert_iterator& operator=(const typename _Container::value_type& __value) {
52 iter = container->insert(iter, __value);
53 ++iter;
54 return *this;
55 }
56 _LIBCPP_HIDE_FROM_ABI insert_iterator& operator*() { return *this; }
57 _LIBCPP_HIDE_FROM_ABI insert_iterator& operator++() { return *this; }
58 _LIBCPP_HIDE_FROM_ABI insert_iterator& operator++(int) { return *this; }
59};
60
61template <class _Container>
62inline _LIBCPP_HIDE_FROM_ABI insert_iterator<_Container>
63inserter(_Container& __x, __insert_iterator_iter_t<_Container> __i) {
64 return insert_iterator<_Container>(__x, __i);
65}
66
67_LIBCPP_END_NAMESPACE_STD
68
69_LIBCPP_POP_MACROS
70
71#endif // _LIBCPP___CXX03___ITERATOR_INSERT_ITERATOR_H
72

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source code of libcxx/include/__cxx03/__iterator/insert_iterator.h