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// -*- C++ -*-
 
// Copyright (C) 2005, 2006, 2009 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 const_point_iterator.hpp
 * Contains an iterator class returned by the tables' const find and insert
 *     methods.
 */
 
class point_iterator_;
 
// Const point-type iterator.
class const_point_iterator_
{
 
public:
 
  // Category.
  typedef trivial_iterator_tag iterator_category;
 
  // Difference type.
  typedef trivial_iterator_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;
 
public:
 
  inline
  const_point_iterator_(const_pointer p_value) : m_p_value(p_value)
  { }
 
  // Default constructor.
  inline
  const_point_iterator_()
 
    : m_p_value(NULL)
  { }
 
  // Copy constructor.
  inline
  const_point_iterator_(const const_point_iterator_& other)
 
    : m_p_value(other.m_p_value)
  { }
 
  // Copy constructor.
  inline
  const_point_iterator_(const point_iterator_& other)
 
    : m_p_value(other.m_p_value)
  { }
 
  // Access.
  inline const_pointer
  operator->() const
  {
    _GLIBCXX_DEBUG_ASSERT(m_p_value != NULL);
 
    return (m_p_value);
  }
 
  // Access.
  inline const_reference
  operator*() const
  {
    _GLIBCXX_DEBUG_ASSERT(m_p_value != NULL);
 
    return (*m_p_value);
  }
 
  // Compares content to a different iterator object.
  inline bool
  operator==(const point_iterator_& other) const
  {
    return (m_p_value == other.m_p_value);
  }
 
  // Compares content to a different iterator object.
  inline bool
  operator==(const const_point_iterator_& other) const
  {
    return (m_p_value == other.m_p_value);
  }
 
  // Compares content (negatively) to a different iterator object.
  inline bool
  operator!=(const point_iterator_& other) const
  {
    return (m_p_value != other.m_p_value);
  }
 
  // Compares content (negatively) to a different iterator object.
  inline bool
  operator!=(const const_point_iterator_& other) const
  {
    return (m_p_value != other.m_p_value);
  }
 
protected:
  const_pointer m_p_value;
 
  friend class point_iterator_;
 
  friend class PB_DS_CLASS_C_DEC;
};