stl_raw_storage_iter.h

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// -*- C++ -*-

// Copyright (C) 2001-2017 Free Software Foundation, Inc.
//
// This file is part of the GNU ISO C++ Library.  This library is free
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// terms of the GNU General Public License as published by the
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/*
 *
 * Copyright (c) 1994
 * Hewlett-Packard Company
 *
 * Permission to use, copy, modify, distribute and sell this software
 * and its documentation for any purpose is hereby granted without fee,
 * provided that the above copyright notice appear in all copies and
 * that both that copyright notice and this permission notice appear
 * in supporting documentation.  Hewlett-Packard Company makes no
 * representations about the suitability of this software for any
 * purpose.  It is provided "as is" without express or implied warranty.
 *
 *
 * Copyright (c) 1996
 * Silicon Graphics Computer Systems, Inc.
 *
 * Permission to use, copy, modify, distribute and sell this software
 * and its documentation for any purpose is hereby granted without fee,
 * provided that the above copyright notice appear in all copies and
 * that both that copyright notice and this permission notice appear
 * in supporting documentation.  Silicon Graphics makes no
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 */

/** @file bits/stl_raw_storage_iter.h
 *  This is an internal header file, included by other library headers.
 *  Do not attempt to use it directly. @headername{memory}
 */

#ifndef _STL_RAW_STORAGE_ITERATOR_H
#define _STL_RAW_STORAGE_ITERATOR_H 1

namespace std _GLIBCXX_VISIBILITY(default)
{
_GLIBCXX_BEGIN_NAMESPACE_VERSION

  /**
   *  This iterator class lets algorithms store their results into
   *  uninitialized memory.
  */
  template <class _OutputIterator, class _Tp>
    class raw_storage_iterator
    : public iterator<output_iterator_tag, void, void, void, void>
    {
    protected:
      _OutputIterator _M_iter;

    public:
      explicit
      raw_storage_iterator(_OutputIterator __x)
      : _M_iter(__x) {}

      raw_storage_iterator&
      operator*() { return *this; }

      raw_storage_iterator&
      operator=(const _Tp& __element)
      {
        std::_Construct(std::__addressof(*_M_iter), __element);
        return *this;
      }

#if __cplusplus >= 201103L
      // _GLIBCXX_RESOLVE_LIB_DEFECTS
      // 2127. Move-construction with raw_storage_iterator
      raw_storage_iterator&
      operator=(_Tp&& __element)
      {
        std::_Construct(std::__addressof(*_M_iter), std::move(__element));
        return *this;
      }
#endif

      raw_storage_iterator&
      operator++()
      {
        ++_M_iter;
        return *this;
      }

      raw_storage_iterator
      operator++(int)
      {
        raw_storage_iterator __tmp = *this;
        ++_M_iter;
        return __tmp;
      }

      // _GLIBCXX_RESOLVE_LIB_DEFECTS
      // 2454. Add raw_storage_iterator::base() member
      _OutputIterator base() const { return _M_iter; }
    };

_GLIBCXX_END_NAMESPACE_VERSION
} // namespace

#endif