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 
20 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
21 #  pragma GCC system_header
22 #endif
23 
24 _LIBCPP_BEGIN_NAMESPACE_STD
25 
26 #if _LIBCPP_STD_VER <= 17 || defined(_LIBCPP_ENABLE_CXX20_REMOVED_RAW_STORAGE_ITERATOR)
27 
28 _LIBCPP_SUPPRESS_DEPRECATED_PUSH
29 template <class _OutputIterator, class _Tp>
30 class _LIBCPP_TEMPLATE_VIS _LIBCPP_DEPRECATED_IN_CXX17 raw_storage_iterator
31 #if _LIBCPP_STD_VER <= 14 || !defined(_LIBCPP_ABI_NO_ITERATOR_BASES)
32     : public iterator<output_iterator_tag, void, void, void, void>
33 #endif
34 {
35 _LIBCPP_SUPPRESS_DEPRECATED_POP
36 private:
37     _OutputIterator __x_;
38 public:
39     typedef output_iterator_tag iterator_category;
40     typedef void                value_type;
41 #if _LIBCPP_STD_VER > 17
42     typedef ptrdiff_t           difference_type;
43 #else
44     typedef void                difference_type;
45 #endif
46     typedef void                pointer;
47     typedef void                reference;
48 
49     _LIBCPP_INLINE_VISIBILITY explicit raw_storage_iterator(_OutputIterator __x) : __x_(__x) {}
50     _LIBCPP_INLINE_VISIBILITY raw_storage_iterator& operator*() {return *this;}
51     _LIBCPP_INLINE_VISIBILITY raw_storage_iterator& operator=(const _Tp& __element)
52         {::new ((void*)_VSTD::addressof(*__x_)) _Tp(__element); return *this;}
53 #if _LIBCPP_STD_VER >= 14
54     _LIBCPP_INLINE_VISIBILITY raw_storage_iterator& operator=(_Tp&& __element)
55         {::new ((void*)_VSTD::addressof(*__x_)) _Tp(_VSTD::move(__element)); return *this;}
56 #endif
57     _LIBCPP_INLINE_VISIBILITY raw_storage_iterator& operator++() {++__x_; return *this;}
58     _LIBCPP_INLINE_VISIBILITY raw_storage_iterator  operator++(int)
59         {raw_storage_iterator __t(*this); ++__x_; return __t;}
60 #if _LIBCPP_STD_VER >= 14
61     _LIBCPP_INLINE_VISIBILITY _OutputIterator base() const { return __x_; }
62 #endif
63 };
64 
65 #endif // _LIBCPP_STD_VER <= 17 || defined(_LIBCPP_ENABLE_CXX20_REMOVED_RAW_STORAGE_ITERATOR)
66 
67 _LIBCPP_END_NAMESPACE_STD
68 
69 #endif // _LIBCPP___MEMORY_RAW_STORAGE_ITERATOR_H
70