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// -*- C++ -*-

// Copyright (C) 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) 2004 Ami Tavory and Vladimir Dreizin, IBM-HRL.

// Permission to use, copy, modify, sell, and distribute this software

// is hereby granted without fee, provided that the above copyright

// notice appears in all copies, and that both that copyright notice and

// this permission notice appear in supporting documentation. None of

// the above authors, nor IBM Haifa Research Laboratories, make any

// representation about the suitability of this software for any

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

/**

 * @file const_iterator.hpp

 * Contains an iterator class used for const ranging over the elements of the

 *   table.

 */

class const_iterator_ :

  public const_find_iterator_

{

public:

  typedef std::forward_iterator_tag iterator_category;

  typedef typename Allocator::difference_type difference_type;

  typedef mapped_value_type value_type;

  typedef mapped_pointer pointer;

  typedef const_mapped_pointer const_pointer;

  typedef mapped_reference reference;

  typedef const_mapped_reference const_reference;

public:

  inline

  const_iterator_()

    : m_p_tbl(NULL)

  { }

  inline const_iterator_&

  operator++()

  {

    m_p_tbl->inc_it_state(my_base::m_p_value, m_pos);

    return (*this);

  }

  inline const_iterator_

  operator++(int)

  {

    const_iterator_ ret =* this;

    m_p_tbl->inc_it_state(my_base::m_p_value, m_pos);

    return (ret);

  }

protected:

  typedef const_find_iterator_ my_base;

protected:

  /**

   * Constructor used by the table to initiate the generalized

   *   pointer and position (e.g., this is called from within a find()

   *   of a table.

   **/

  inline

  const_iterator_(const_mapped_pointer p_value, PB_ASSOC_GEN_POS pos, const PB_ASSOC_CLASS_C_DEC* p_tbl) : const_find_iterator_(p_value),

                                                                                                           m_p_tbl(p_tbl),

                                                                                                           m_pos(pos)

  { }

protected:

  /**

   * Pointer to the table object which created the iterator (used for

   *   incrementing its position.

   **/

  const PB_ASSOC_CLASS_C_DEC* m_p_tbl;

  PB_ASSOC_GEN_POS m_pos;

  friend class PB_ASSOC_CLASS_C_DEC;

};