mingw/lib/gcc/mingw32/4.3.3/include/c++/bits/stl_construct.h

   1 // nonstandard construct and destroy functions -*- C++ -*-
   2
   3 // Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008
   4 // Free Software Foundation, Inc.
   5 //
   6 // This file is part of the GNU ISO C++ Library.  This library is free
   7 // software; you can redistribute it and/or modify it under the
   8 // terms of the GNU General Public License as published by the
   9 // Free Software Foundation; either version 2, or (at your option)
  10 // any later version.
  11
  12 // This library is distributed in the hope that it will be useful,
  13 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  14 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15 // GNU General Public License for more details.
  16
  17 // You should have received a copy of the GNU General Public License along
  18 // with this library; see the file COPYING.  If not, write to the Free
  19 // Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
  20 // USA.
  21
  22 // As a special exception, you may use this file as part of a free software
  23 // library without restriction.  Specifically, if other files instantiate
  24 // templates or use macros or inline functions from this file, or you compile
  25 // this file and link it with other files to produce an executable, this
  26 // file does not by itself cause the resulting executable to be covered by
  27 // the GNU General Public License.  This exception does not however
  28 // invalidate any other reasons why the executable file might be covered by
  29 // the GNU General Public License.
  30
  31 /*
  32  *
  33  * Copyright (c) 1994
  34  * Hewlett-Packard Company
  35  *
  36  * Permission to use, copy, modify, distribute and sell this software
  37  * and its documentation for any purpose is hereby granted without fee,
  38  * provided that the above copyright notice appear in all copies and
  39  * that both that copyright notice and this permission notice appear
  40  * in supporting documentation.  Hewlett-Packard Company makes no
  41  * representations about the suitability of this software for any
  42  * purpose.  It is provided "as is" without express or implied warranty.
  43  *
  44  *
  45  * Copyright (c) 1996,1997
  46  * Silicon Graphics Computer Systems, Inc.
  47  *
  48  * Permission to use, copy, modify, distribute and sell this software
  49  * and its documentation for any purpose is hereby granted without fee,
  50  * provided that the above copyright notice appear in all copies and
  51  * that both that copyright notice and this permission notice appear
  52  * in supporting documentation.  Silicon Graphics makes no
  53  * representations about the suitability of this software for any
  54  * purpose.  It is provided "as is" without express or implied warranty.
  55  */
  56
  57 /** @file stl_construct.h
  58  *  This is an internal header file, included by other library headers.
  59  *  You should not attempt to use it directly.
  60  */
  61
  62 #ifndef _STL_CONSTRUCT_H
  63 #define _STL_CONSTRUCT_H 1
  64
  65 #include <new>
  66
  67 _GLIBCXX_BEGIN_NAMESPACE(std)
  68
  69   /**
  70    * Constructs an object in existing memory by invoking an allocated
  71    * object's constructor with an initializer.
  72    */
  73   template<typename _T1, typename _T2>
  74     inline void
  75     _Construct(_T1* __p, const _T2& __value)
  76     {
  77       // _GLIBCXX_RESOLVE_LIB_DEFECTS
  78       // 402. wrong new expression in [some_]allocator::construct
  79       ::new(static_cast<void*>(__p)) _T1(__value);
  80     }
  81
  82   /**
  83    * Destroy the object pointed to by a pointer type.
  84    */
  85   template<typename _Tp>
  86     inline void
  87     _Destroy(_Tp* __pointer)
  88     { __pointer->~_Tp(); }
  89
  90   /**
  91    * Destroy a range of objects.  If the value_type of the object has
  92    * a trivial destructor, the compiler should optimize all of this
  93    * away, otherwise the objects' destructors must be invoked.
  94    */
  95   template<typename _ForwardIterator>
  96     inline void
  97     _Destroy(_ForwardIterator __first, _ForwardIterator __last)
  98     {
  99       typedef typename iterator_traits<_ForwardIterator>::value_type
 100                        _Value_type;
 101       if (!__has_trivial_destructor(_Value_type))
 102         for (; __first != __last; ++__first)
 103           std::_Destroy(&*__first);
 104     }
 105
 106   /**
 107    * Destroy a range of objects using the supplied allocator.  For
 108    * nondefault allocators we do not optimize away invocation of
 109    * destroy() even if _Tp has a trivial destructor.
 110    */
 111
 112   template <typename _Tp> class allocator;
 113
 114   template<typename _ForwardIterator, typename _Allocator>
 115     void
 116     _Destroy(_ForwardIterator __first, _ForwardIterator __last,
 117              _Allocator& __alloc)
 118     {
 119       for (; __first != __last; ++__first)
 120         __alloc.destroy(&*__first);
 121     }
 122
 123   template<typename _ForwardIterator, typename _Tp>
 124     inline void
 125     _Destroy(_ForwardIterator __first, _ForwardIterator __last,
 126              allocator<_Tp>&)
 127     {
 128       _Destroy(__first, __last);
 129     }
 130
 131 _GLIBCXX_END_NAMESPACE
 132
 133 #endif /* _STL_CONSTRUCT_H */
 134