// Copyright David Abrahams 2004. Use, modification and distribution is

// subject to the Boost Software License, Version 1.0. (See accompanying

// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)

#ifndef NODE_ITERATOR1_DWA2004110_HPP

# define NODE_ITERATOR1_DWA2004110_HPP

# include "node.hpp"

# include <boost/iterator/iterator_facade.hpp>

class node_iterator

: public boost::iterator_facade<

node_iterator

, node_base

, boost::forward_traversal_tag

>

{

public:

node_iterator()

: m_node(0)

{}

explicit node_iterator(node_base* p)

: m_node(p)

{}

private:

friend class boost::iterator_core_access;

void increment()

{ m_node = m_node->next(); }

bool equal(node_iterator const& other) const

{ return this->m_node == other.m_node; }

node_base& dereference() const

{ return *m_node; }

node_base* m_node;

};

#endif // NODE_ITERATOR1_DWA2004110_HPP