/storage/packages/gcc/5.3.0/include/c++/5.3.0/bits/stl_construct.h

// nonstandard construct and destroy functions -*- C++ -*-

// Copyright (C) 2001-2015 Free Software Foundation, Inc.

//

// This file is part of the GNU ISO C++ Library.  This library is free

// software; you can redistribute it and/or modify it under the

// terms of the GNU General Public License as published by the

// Free Software Foundation; either version 3, or (at your option)

// any later version.

// This library is distributed in the hope that it will be useful,

// but WITHOUT ANY WARRANTY; without even the implied warranty of

// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

// GNU General Public License for more details.

// Under Section 7 of GPL version 3, you are granted additional

// permissions described in the GCC Runtime Library Exception, version

// 3.1, as published by the Free Software Foundation.

// You should have received a copy of the GNU General Public License and

// a copy of the GCC Runtime Library Exception along with this program;

// see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see

// <http://www.gnu.org/licenses/>.

/*

 *

 * 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) 1996,1997

 * 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

 * representations about the suitability of this software for any

 * purpose.  It is provided "as is" without express or implied warranty.

 */

/** @file bits/stl_construct.h

 *  This is an internal header file, included by other library headers.

 *  Do not attempt to use it directly. @headername{memory}

 */

#ifndef _STL_CONSTRUCT_H

#define _STL_CONSTRUCT_H 1

#include <new>

#include <bits/move.h>

#include <ext/alloc_traits.h>

namespace std _GLIBCXX_VISIBILITY(default)

{

_GLIBCXX_BEGIN_NAMESPACE_VERSION

  /**

   * Constructs an object in existing memory by invoking an allocated

   * object's constructor with an initializer.

   */

#if __cplusplus >= 201103L

  template<typename _T1, typename... _Args>

    inline void

    _Construct(_T1* __p, _Args&&... __args)

#else

  template<typename _T1, typename _T2>

    inline void

    _Construct(_T1* __p, const _T2& __value)

    {

      // _GLIBCXX_RESOLVE_LIB_DEFECTS

      // 402. wrong new expression in [some_]allocator::construct

      ::new(static_cast<void*>(__p)) _T1(__value);

    }

#endif

  /**

   * Destroy the object pointed to by a pointer type.

   */

  template<typename _Tp>

    inline void

    _Destroy(_Tp* __pointer)

    { __pointer->~_Tp(); }

  template<bool>

    struct _Destroy_aux

    {

      template<typename _ForwardIterator>

        static void

        __destroy(_ForwardIterator __first, _ForwardIterator __last)

	{

	  for (; __first != __last; ++__first)

	    std::_Destroy(std::__addressof(*__first));

	}

    };

  template<>

    struct _Destroy_aux<true>

    {

      template<typename _ForwardIterator>

        static void

        __destroy(_ForwardIterator, _ForwardIterator) { }

    };

  /**

   * Destroy a range of objects.  If the value_type of the object has

   * a trivial destructor, the compiler should optimize all of this

   * away, otherwise the objects' destructors must be invoked.

   */

  template<typename _ForwardIterator>

    inline void

    _Destroy(_ForwardIterator __first, _ForwardIterator __last)

    {

      typedef typename iterator_traits<_ForwardIterator>::value_type

                       _Value_type;

      std::_Destroy_aux<__has_trivial_destructor(_Value_type)>::

	__destroy(__first, __last);

    }

  /**

   * Destroy a range of objects using the supplied allocator.  For

   * nondefault allocators we do not optimize away invocation of 

   * destroy() even if _Tp has a trivial destructor.

   */

  template<typename _ForwardIterator, typename _Allocator>

    void

    _Destroy(_ForwardIterator __first, _ForwardIterator __last,

	     _Allocator& __alloc)

    {

      typedef __gnu_cxx::__alloc_traits<_Allocator> __traits;

      for (; __first != __last; ++__first)

	__traits::destroy(__alloc, std::__addressof(*__first));

    }

  template<typename _ForwardIterator, typename _Tp>

    inline void

    _Destroy(_ForwardIterator __first, _ForwardIterator __last,

	     allocator<_Tp>&)

    {

      _Destroy(__first, __last);

    }

_GLIBCXX_END_NAMESPACE_VERSION

} // namespace std

#endif /* _STL_CONSTRUCT_H */