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// -*- 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/point_const_iterator.hpp

 * Contains an iterator class returned by the tables' const find and insert

 *     methods.

 */

class point_iterator_;

/// Const point-type iterator.

class point_const_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;

  inline

  point_const_iterator_(const_pointer p_value) : m_p_value(p_value)

  { }

  /// Default constructor.

  inline

  point_const_iterator_() : m_p_value(0)

  { }

  /// Copy constructor.

  inline

  point_const_iterator_(const point_const_iterator_& other)

  : m_p_value(other.m_p_value)

  { }

  /// Copy constructor.

  inline

  point_const_iterator_(const point_iterator_& other)

  : m_p_value(other.m_p_value)

  { }

  /// Access.

  const_pointer

  operator->() const

  {

    _GLIBCXX_DEBUG_ASSERT(m_p_value != 0);

    return m_p_value;

  }

  /// Access.

  const_reference

  operator*() const

  {

    _GLIBCXX_DEBUG_ASSERT(m_p_value != 0);

    return *m_p_value;

  }

  /// Compares content to a different iterator object.

  bool

  operator==(const point_iterator_& other) const

  { return m_p_value == other.m_p_value; }

  /// Compares content to a different iterator object.

  bool

  operator==(const point_const_iterator_& other) const

  { return m_p_value == other.m_p_value; }

  /// Compares content (negatively) to a different iterator object.

  bool

  operator!=(const point_iterator_& other) const

  { return m_p_value != other.m_p_value; }

  /// Compares content (negatively) to a different iterator object.

  bool

  operator!=(const point_const_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;

};