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      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
     29 
     30 template <class _OutputIterator, class _Tp>
     31 class _LIBCPP_TEMPLATE_VIS _LIBCPP_DEPRECATED_IN_CXX17 raw_storage_iterator
     32     : public iterator<output_iterator_tag,
     33                       _Tp,                                         // purposefully not C++03
     34                       ptrdiff_t,                                   // purposefully not C++03
     35                       _Tp*,                                        // purposefully not C++03
     36                       raw_storage_iterator<_OutputIterator, _Tp>&> // purposefully not C++03
     37 {
     38 private:
     39     _OutputIterator __x_;
     40 public:
     41     _LIBCPP_INLINE_VISIBILITY explicit raw_storage_iterator(_OutputIterator __x) : __x_(__x) {}
     42     _LIBCPP_INLINE_VISIBILITY raw_storage_iterator& operator*() {return *this;}
     43     _LIBCPP_INLINE_VISIBILITY raw_storage_iterator& operator=(const _Tp& __element)
     44         {::new ((void*)_VSTD::addressof(*__x_)) _Tp(__element); return *this;}
     45 #if _LIBCPP_STD_VER >= 14
     46     _LIBCPP_INLINE_VISIBILITY raw_storage_iterator& operator=(_Tp&& __element)
     47         {::new ((void*)_VSTD::addressof(*__x_)) _Tp(_VSTD::move(__element)); return *this;}
     48 #endif
     49     _LIBCPP_INLINE_VISIBILITY raw_storage_iterator& operator++() {++__x_; return *this;}
     50     _LIBCPP_INLINE_VISIBILITY raw_storage_iterator  operator++(int)
     51         {raw_storage_iterator __t(*this); ++__x_; return __t;}
     52 #if _LIBCPP_STD_VER >= 14
     53     _LIBCPP_INLINE_VISIBILITY _OutputIterator base() const { return __x_; }
     54 #endif
     55 };
     56 
     57 #endif // _LIBCPP_STD_VER <= 17
     58 
     59 _LIBCPP_END_NAMESPACE_STD
     60 
     61 _LIBCPP_POP_MACROS
     62 
     63 #endif // _LIBCPP___MEMORY_RAW_STORAGE_ITERATOR_H
     64