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___MEMORY_RAW_STORAGE_ITERATOR_H
11#define _LIBCPP___MEMORY_RAW_STORAGE_ITERATOR_H
12
13#include <__config>
14#include <__iterator/iterator.h>
15#include <__iterator/iterator_traits.h>
16#include <__memory/addressof.h>
17#include <__utility/move.h>
18#include <cstddef>
19#include <new>
20
21#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
22#  pragma GCC system_header
23#endif
24
25_LIBCPP_PUSH_MACROS
26#include <__undef_macros>
27
28_LIBCPP_BEGIN_NAMESPACE_STD
29
30#if _LIBCPP_STD_VER <= 17 || defined(_LIBCPP_ENABLE_CXX20_REMOVED_RAW_STORAGE_ITERATOR)
31
32_LIBCPP_SUPPRESS_DEPRECATED_PUSH
33template <class _OutputIterator, class _Tp>
34class _LIBCPP_TEMPLATE_VIS _LIBCPP_DEPRECATED_IN_CXX17 raw_storage_iterator
35#  if _LIBCPP_STD_VER <= 14 || !defined(_LIBCPP_ABI_NO_ITERATOR_BASES)
36    : public iterator<output_iterator_tag, void, void, void, void>
37#  endif
38{
39  _LIBCPP_SUPPRESS_DEPRECATED_POP
40
41private:
42  _OutputIterator __x_;
43
44public:
45  typedef output_iterator_tag iterator_category;
46  typedef void value_type;
47#  if _LIBCPP_STD_VER >= 20
48  typedef ptrdiff_t difference_type;
49#  else
50  typedef void difference_type;
51#  endif
52  typedef void pointer;
53  typedef void reference;
54
55  _LIBCPP_HIDE_FROM_ABI explicit raw_storage_iterator(_OutputIterator __x) : __x_(__x) {}
56  _LIBCPP_HIDE_FROM_ABI raw_storage_iterator& operator*() { return *this; }
57  _LIBCPP_HIDE_FROM_ABI raw_storage_iterator& operator=(const _Tp& __element) {
58    ::new ((void*)std::addressof(*__x_)) _Tp(__element);
59    return *this;
60  }
61#  if _LIBCPP_STD_VER >= 14
62  _LIBCPP_HIDE_FROM_ABI raw_storage_iterator& operator=(_Tp&& __element) {
63    ::new ((void*)std::addressof(*__x_)) _Tp(std::move(__element));
64    return *this;
65  }
66#  endif
67  _LIBCPP_HIDE_FROM_ABI raw_storage_iterator& operator++() {
68    ++__x_;
69    return *this;
70  }
71  _LIBCPP_HIDE_FROM_ABI raw_storage_iterator operator++(int) {
72    raw_storage_iterator __t(*this);
73    ++__x_;
74    return __t;
75  }
76#  if _LIBCPP_STD_VER >= 14
77  _LIBCPP_HIDE_FROM_ABI _OutputIterator base() const { return __x_; }
78#  endif
79};
80
81#endif // _LIBCPP_STD_VER <= 17 || defined(_LIBCPP_ENABLE_CXX20_REMOVED_RAW_STORAGE_ITERATOR)
82
83_LIBCPP_END_NAMESPACE_STD
84
85_LIBCPP_POP_MACROS
86
87#endif // _LIBCPP___MEMORY_RAW_STORAGE_ITERATOR_H
88