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 <__memory/addressof.h>
15 #include <cstddef>
16 #include <iterator>
17 #include <utility>
18 
19 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
20 #pragma GCC system_header
21 #endif
22 
23 _LIBCPP_BEGIN_NAMESPACE_STD
24 
25 #if _LIBCPP_STD_VER <= 17 || defined(_LIBCPP_ENABLE_CXX20_REMOVED_RAW_STORAGE_ITERATOR)
26 
27 _LIBCPP_SUPPRESS_DEPRECATED_PUSH
28 template <class _OutputIterator, class _Tp>
29 class _LIBCPP_TEMPLATE_VIS _LIBCPP_DEPRECATED_IN_CXX17 raw_storage_iterator
30 #if _LIBCPP_STD_VER <= 14 || !defined(_LIBCPP_ABI_NO_ITERATOR_BASES)
31     : public iterator<output_iterator_tag, void, void, void, void>
32 #endif
33 {
34 _LIBCPP_SUPPRESS_DEPRECATED_POP
35 private:
36     _OutputIterator __x_;
37 public:
38     typedef output_iterator_tag iterator_category;
39     typedef void                value_type;
40 #if _LIBCPP_STD_VER > 17
41     typedef ptrdiff_t           difference_type;
42 #else
43     typedef void                difference_type;
44 #endif
45     typedef void                pointer;
46     typedef void                reference;
47 
48     _LIBCPP_INLINE_VISIBILITY explicit raw_storage_iterator(_OutputIterator __x) : __x_(__x) {}
49     _LIBCPP_INLINE_VISIBILITY raw_storage_iterator& operator*() {return *this;}
50     _LIBCPP_INLINE_VISIBILITY raw_storage_iterator& operator=(const _Tp& __element)
51         {::new ((void*)_VSTD::addressof(*__x_)) _Tp(__element); return *this;}
52 #if _LIBCPP_STD_VER >= 14
53     _LIBCPP_INLINE_VISIBILITY raw_storage_iterator& operator=(_Tp&& __element)
54         {::new ((void*)_VSTD::addressof(*__x_)) _Tp(_VSTD::move(__element)); return *this;}
55 #endif
56     _LIBCPP_INLINE_VISIBILITY raw_storage_iterator& operator++() {++__x_; return *this;}
57     _LIBCPP_INLINE_VISIBILITY raw_storage_iterator  operator++(int)
58         {raw_storage_iterator __t(*this); ++__x_; return __t;}
59 #if _LIBCPP_STD_VER >= 14
60     _LIBCPP_INLINE_VISIBILITY _OutputIterator base() const { return __x_; }
61 #endif
62 };
63 
64 #endif // _LIBCPP_STD_VER <= 17 || defined(_LIBCPP_ENABLE_CXX20_REMOVED_RAW_STORAGE_ITERATOR)
65 
66 _LIBCPP_END_NAMESPACE_STD
67 
68 #endif // _LIBCPP___MEMORY_RAW_STORAGE_ITERATOR_H
69