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_PUSH_MACROS
24 #include <__undef_macros>
25 
26 _LIBCPP_BEGIN_NAMESPACE_STD
27 
28 #if _LIBCPP_STD_VER <= 17 || defined(_LIBCPP_ENABLE_CXX20_REMOVED_RAW_STORAGE_ITERATOR)
29 
30 _LIBCPP_SUPPRESS_DEPRECATED_PUSH
31 template <class _OutputIterator, class _Tp>
32 class _LIBCPP_TEMPLATE_VIS _LIBCPP_DEPRECATED_IN_CXX17 raw_storage_iterator
33 #if _LIBCPP_STD_VER <= 14 || !defined(_LIBCPP_ABI_NO_ITERATOR_BASES)
34     : public iterator<output_iterator_tag, void, void, void, void>
35 #endif
36 {
37 _LIBCPP_SUPPRESS_DEPRECATED_POP
38 private:
39     _OutputIterator __x_;
40 public:
41     typedef output_iterator_tag iterator_category;
42     typedef void                value_type;
43 #if _LIBCPP_STD_VER > 17
44     typedef ptrdiff_t           difference_type;
45 #else
46     typedef void                difference_type;
47 #endif
48     typedef void                pointer;
49     typedef void                reference;
50 
raw_storage_iterator(_OutputIterator __x)51     _LIBCPP_INLINE_VISIBILITY explicit raw_storage_iterator(_OutputIterator __x) : __x_(__x) {}
52     _LIBCPP_INLINE_VISIBILITY raw_storage_iterator& operator*() {return *this;}
53     _LIBCPP_INLINE_VISIBILITY raw_storage_iterator& operator=(const _Tp& __element)
54         {::new ((void*)_VSTD::addressof(*__x_)) _Tp(__element); return *this;}
55 #if _LIBCPP_STD_VER >= 14
56     _LIBCPP_INLINE_VISIBILITY raw_storage_iterator& operator=(_Tp&& __element)
57         {::new ((void*)_VSTD::addressof(*__x_)) _Tp(_VSTD::move(__element)); return *this;}
58 #endif
59     _LIBCPP_INLINE_VISIBILITY raw_storage_iterator& operator++() {++__x_; return *this;}
60     _LIBCPP_INLINE_VISIBILITY raw_storage_iterator  operator++(int)
61         {raw_storage_iterator __t(*this); ++__x_; return __t;}
62 #if _LIBCPP_STD_VER >= 14
base()63     _LIBCPP_INLINE_VISIBILITY _OutputIterator base() const { return __x_; }
64 #endif
65 };
66 
67 #endif // _LIBCPP_STD_VER <= 17 || defined(_LIBCPP_ENABLE_CXX20_REMOVED_RAW_STORAGE_ITERATOR)
68 
69 _LIBCPP_END_NAMESPACE_STD
70 
71 _LIBCPP_POP_MACROS
72 
73 #endif // _LIBCPP___MEMORY_RAW_STORAGE_ITERATOR_H
74