text: // -*- C++ -*-
  
  // Copyright (C) 2005, 2006 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, 59 Temple Place - Suite 330, Boston,
  // MA 02111-1307, 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 child_iterator.hpp
   * Contains a iterator for a patricia tree.
   */
  
  struct iterator : public const_iterator
  {
  public:
    typedef std::forward_iterator_tag iterator_category;
    typedef typename Allocator::difference_type difference_type;
    typedef node_pointer value_type;
    typedef node_pointer_pointer pointer;
    typedef node_pointer_reference reference;
  
    inline
    iterator(node_pointer_pointer p_p_cur = NULL,  
  	   node_pointer_pointer p_p_end = NULL) 
    : const_iterator(p_p_cur, p_p_end)
    { }
  
    inline bool
    operator==(const iterator& other) const
    { return const_iterator::m_p_p_cur == other.m_p_p_cur; }
  
    inline bool
    operator!=(const iterator& other) const
    { return const_iterator::m_p_p_cur != other.m_p_p_cur; }
  
    inline iterator& 
    operator++()
    {
      const_iterator::operator++();
      return *this;
    }
  
    inline iterator
    operator++(int)
    {
      iterator ret_it(*this);
      operator++();
      return ret_it;
    }
  
    node_pointer_pointer
    operator->()
    {
      _GLIBCXX_DEBUG_ONLY(const_iterator::assert_referencible();)
      return const_iterator::m_p_p_cur;
    }
  
    node_pointer
    operator*()
    {
      _GLIBCXX_DEBUG_ONLY(const_iterator::assert_referencible();)
      return *const_iterator::m_p_p_cur;
    }
  };
  
  