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_BEGIN_NAMESPACE_STD
26 
27 #if _LIBCPP_STD_VER <= 17 || defined(_LIBCPP_ENABLE_CXX20_REMOVED_RAW_STORAGE_ITERATOR)
28 
29 _LIBCPP_SUPPRESS_DEPRECATED_PUSH
30 template <class _OutputIterator, class _Tp>
31 class _LIBCPP_TEMPLATE_VIS _LIBCPP_DEPRECATED_IN_CXX17 raw_storage_iterator
32 #if _LIBCPP_STD_VER <= 14 || !defined(_LIBCPP_ABI_NO_ITERATOR_BASES)
33     : public iterator<output_iterator_tag, void, void, void, void>
34 #endif
35 {
36 _LIBCPP_SUPPRESS_DEPRECATED_POP
37 private:
38     _OutputIterator __x_;
39 public:
40     typedef output_iterator_tag iterator_category;
41     typedef void                value_type;
42 #if _LIBCPP_STD_VER >= 20
43     typedef ptrdiff_t           difference_type;
44 #else
45     typedef void                difference_type;
46 #endif
47     typedef void                pointer;
48     typedef void                reference;
49 
50     _LIBCPP_INLINE_VISIBILITY explicit raw_storage_iterator(_OutputIterator __x) : __x_(__x) {}
51     _LIBCPP_INLINE_VISIBILITY raw_storage_iterator& operator*() {return *this;}
52     _LIBCPP_INLINE_VISIBILITY raw_storage_iterator& operator=(const _Tp& __element)
53         {::new ((void*)_VSTD::addressof(*__x_)) _Tp(__element); return *this;}
54 #if _LIBCPP_STD_VER >= 14
55     _LIBCPP_INLINE_VISIBILITY raw_storage_iterator& operator=(_Tp&& __element)
56         {::new ((void*)_VSTD::addressof(*__x_)) _Tp(_VSTD::move(__element)); return *this;}
57 #endif
58     _LIBCPP_INLINE_VISIBILITY raw_storage_iterator& operator++() {++__x_; return *this;}
59     _LIBCPP_INLINE_VISIBILITY raw_storage_iterator  operator++(int)
60         {raw_storage_iterator __t(*this); ++__x_; return __t;}
61 #if _LIBCPP_STD_VER >= 14
62     _LIBCPP_INLINE_VISIBILITY _OutputIterator base() const { return __x_; }
63 #endif
64 };
65 
66 #endif // _LIBCPP_STD_VER <= 17 || defined(_LIBCPP_ENABLE_CXX20_REMOVED_RAW_STORAGE_ITERATOR)
67 
68 _LIBCPP_END_NAMESPACE_STD
69 
70 #endif // _LIBCPP___MEMORY_RAW_STORAGE_ITERATOR_H
71