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

// Copyright (C) 2001, 2002, 2003, 2004, 2005 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 2, 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.

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

// with this library; see the file COPYING.  If not, write to the Free

// Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,

// USA.

// As a special exception, you may use this file as part of a free software

// library without restriction.  Specifically, if other files instantiate

// templates or use macros or inline functions from this file, or you compile

// this file and link it with other files to produce an executable, this

// file does not by itself cause the resulting executable to be covered by

// the GNU General Public License.  This exception does not however

// invalidate any other reasons why the executable file might be covered by

// the GNU General Public License.

/*

 *

 * 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 stl_construct.h

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

 *  You should not attempt to use it directly.

 */

#ifndef _STL_CONSTRUCT_H

#define _STL_CONSTRUCT_H 1

#include <bits/cpp_type_traits.h>

#include <new>

namespace std

{

  /**

   * @if maint

   * Constructs an object in existing memory by invoking an allocated

   * object's constructor with an initializer.

   * @endif

   */

  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);

    }

  /**

   * @if maint

   * Constructs an object in existing memory by invoking an allocated

   * object's default constructor (no initializers).

   * @endif

   */

  template<typename _T1>

    inline void

    _Construct(_T1* __p)

    {

      // _GLIBCXX_RESOLVE_LIB_DEFECTS

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

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

    }

  /**

   * @if maint

   * Destroy the object pointed to by a pointer type.

   * @endif

   */

  template<typename _Tp>

    inline void

    _Destroy(_Tp* __pointer)

    { __pointer->~_Tp(); }

  /**

   * @if maint

   * Destroy a range of objects with nontrivial destructors.

   *

   * This is a helper function used only by _Destroy().

   * @endif

   */

  template<typename _ForwardIterator>

    inline void

    __destroy_aux(_ForwardIterator __first, _ForwardIterator __last,

                  __false_type)

    {

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

        std::_Destroy(&*__first);

    }

  /**

   * @if maint

   * Destroy a range of objects with trivial destructors.  Since the destructors

   * are trivial, there's nothing to do and hopefully this function will be

   * entirely optimized away.

   *

   * This is a helper function used only by _Destroy().

   * @endif

   */

  template<typename _ForwardIterator>

    inline void

    __destroy_aux(_ForwardIterator, _ForwardIterator, __true_type)

    { }

  /**

   * @if maint

   * 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.

   * @endif

   */

  template<typename _ForwardIterator>

    inline void

    _Destroy(_ForwardIterator __first, _ForwardIterator __last)

    {

      typedef typename iterator_traits<_ForwardIterator>::value_type

                       _Value_type;

      typedef typename std::__is_scalar<_Value_type>::__type

                       _Has_trivial_destructor;

      std::__destroy_aux(__first, __last, _Has_trivial_destructor());

    }

  /**

   * @if maint

   * 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.

   * @endif

   */

  template <typename _Tp> class allocator;

  template<typename _ForwardIterator, typename _Allocator>

    void

    _Destroy(_ForwardIterator __first, _ForwardIterator __last,

             _Allocator __alloc)

    {

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

        __alloc.destroy(&*__first);

    }

  template<typename _ForwardIterator, typename _Tp>

    inline void

    _Destroy(_ForwardIterator __first, _ForwardIterator __last,

             allocator<_Tp>)

    {

      _Destroy(__first, __last);

    }

} // namespace std

#endif /* _STL_CONSTRUCT_H */