Subversion Repositories altor32

// -*- C++ -*-

// Copyright (C) 2005, 2006, 2009, 2010 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) 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 unordered_iterator/const_iterator.hpp

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

 * table.

 */

/// Const range-type iterator.

class const_iterator_

: public point_const_iterator_

{

public:

  /// Category.

  typedef std::forward_iterator_tag iterator_category;

  /// Difference type.

  typedef typename _Alloc::difference_type difference_type;

  /// Iterator's value type.

  typedef value_type_ value_type;

  /// Iterator's pointer type.

  typedef pointer_ pointer;

  /// Iterator's const pointer type.

  typedef const_pointer_ const_pointer;

  /// Iterator's reference type.

  typedef reference_ reference;

  /// Iterator's const reference type.

  typedef const_reference_ const_reference;

  /// Default constructor.

  const_iterator_() : m_p_tbl(0)

  { }

  /// Increments.

  const_iterator_&

  operator++()

  {

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

    return *this;

  }

  /// Increments.

  const_iterator_

  operator++(int)

  {

    const_iterator_ ret =* this;

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

    return ret;

  }

protected:

  typedef point_const_iterator_ base_type;

  /**

   *  Constructor used by the table to initiate the generalized

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

   *      of a table.

   * */

  const_iterator_(const_pointer_ p_value,  PB_DS_GEN_POS pos,

                  const PB_DS_CLASS_C_DEC* p_tbl)

  : point_const_iterator_(p_value), m_p_tbl(p_tbl), m_pos(pos)

  { }

  /**

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

   *      incrementing its position.

   * */

  const PB_DS_CLASS_C_DEC* m_p_tbl;

  PB_DS_GEN_POS m_pos;

  friend class PB_DS_CLASS_C_DEC;

};