contrib/gcc-8.0/libstdc++-v3/include/bits/stl_raw_storage_iter.h

   1 // -*- C++ -*-
   2
   3 // Copyright (C) 2001-2018 Free Software Foundation, Inc.
   4 //
   5 // This file is part of the GNU ISO C++ Library.  This library is free
   6 // software; you can redistribute it and/or modify it under the
   7 // terms of the GNU General Public License as published by the
   8 // Free Software Foundation; either version 3, or (at your option)
   9 // any later version.
  10
  11 // This library is distributed in the hope that it will be useful,
  12 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 // GNU General Public License for more details.
  15
  16 // Under Section 7 of GPL version 3, you are granted additional
  17 // permissions described in the GCC Runtime Library Exception, version
  18 // 3.1, as published by the Free Software Foundation.
  19
  20 // You should have received a copy of the GNU General Public License and
  21 // a copy of the GCC Runtime Library Exception along with this program;
  22 // see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
  23 // <http://www.gnu.org/licenses/>.
  24
  25 /*
  26  *
  27  * Copyright (c) 1994
  28  * Hewlett-Packard Company
  29  *
  30  * Permission to use, copy, modify, distribute and sell this software
  31  * and its documentation for any purpose is hereby granted without fee,
  32  * provided that the above copyright notice appear in all copies and
  33  * that both that copyright notice and this permission notice appear
  34  * in supporting documentation.  Hewlett-Packard Company makes no
  35  * representations about the suitability of this software for any
  36  * purpose.  It is provided "as is" without express or implied warranty.
  37  *
  38  *
  39  * Copyright (c) 1996
  40  * Silicon Graphics Computer Systems, Inc.
  41  *
  42  * Permission to use, copy, modify, distribute and sell this software
  43  * and its documentation for any purpose is hereby granted without fee,
  44  * provided that the above copyright notice appear in all copies and
  45  * that both that copyright notice and this permission notice appear
  46  * in supporting documentation.  Silicon Graphics makes no
  47  * representations about the suitability of this software for any
  48  * purpose.  It is provided "as is" without express or implied warranty.
  49  */
  50
  51 /** @file bits/stl_raw_storage_iter.h
  52  *  This is an internal header file, included by other library headers.
  53  *  Do not attempt to use it directly. @headername{memory}
  54  */
  55
  56 #ifndef _STL_RAW_STORAGE_ITERATOR_H
  57 #define _STL_RAW_STORAGE_ITERATOR_H 1
  58
  59 namespace std _GLIBCXX_VISIBILITY(default)
  60 {
  61 _GLIBCXX_BEGIN_NAMESPACE_VERSION
  62
  63   /**
  64    *  This iterator class lets algorithms store their results into
  65    *  uninitialized memory.
  66   */
  67   template <class _OutputIterator, class _Tp>
  68     class raw_storage_iterator
  69     : public iterator<output_iterator_tag, void, void, void, void>
  70     {
  71     protected:
  72       _OutputIterator _M_iter;
  73
  74     public:
  75       explicit
  76       raw_storage_iterator(_OutputIterator __x)
  77       : _M_iter(__x) {}
  78
  79       raw_storage_iterator&
  80       operator*() { return *this; }
  81
  82       raw_storage_iterator&
  83       operator=(const _Tp& __element)
  84       {
  85         std::_Construct(std::__addressof(*_M_iter), __element);
  86         return *this;
  87       }
  88
  89 #if __cplusplus >= 201103L
  90       // _GLIBCXX_RESOLVE_LIB_DEFECTS
  91       // 2127. Move-construction with raw_storage_iterator
  92       raw_storage_iterator&
  93       operator=(_Tp&& __element)
  94       {
  95         std::_Construct(std::__addressof(*_M_iter), std::move(__element));
  96         return *this;
  97       }
  98 #endif
  99
 100       raw_storage_iterator&
 101       operator++()
 102       {
 103         ++_M_iter;
 104         return *this;
 105       }
 106
 107       raw_storage_iterator
 108       operator++(int)
 109       {
 110         raw_storage_iterator __tmp = *this;
 111         ++_M_iter;
 112         return __tmp;
 113       }
 114
 115       // _GLIBCXX_RESOLVE_LIB_DEFECTS
 116       // 2454. Add raw_storage_iterator::base() member
 117       _OutputIterator base() const { return _M_iter; }
 118     };
 119
 120 _GLIBCXX_END_NAMESPACE_VERSION
 121 } // namespace
 122
 123 #endif