Chris@16: //=======================================================================
Chris@16: // Copyright 2002 Indiana University.
Chris@16: // Authors: Andrew Lumsdaine, Lie-Quan Lee, Jeremy G. Siek
Chris@16: //
Chris@16: // Distributed under the Boost Software License, Version 1.0. (See
Chris@16: // accompanying file LICENSE_1_0.txt or copy at
Chris@16: // http://www.boost.org/LICENSE_1_0.txt)
Chris@16: //=======================================================================
Chris@16: 
Chris@16: #ifndef BOOST_ADJACENCY_ITERATOR_HPP
Chris@16: #define BOOST_ADJACENCY_ITERATOR_HPP
Chris@16: 
Chris@16: #include <boost/iterator/iterator_adaptor.hpp>
Chris@16: #include <boost/graph/graph_traits.hpp>
Chris@16: 
Chris@16: namespace boost
Chris@16: {
Chris@16: 
Chris@16:   template <class Graph, class Vertex, class OutEdgeIter, class Difference>
Chris@16:   struct adjacency_iterator
Chris@16:     : iterator_adaptor<
Chris@16:           adjacency_iterator<Graph,Vertex,OutEdgeIter,Difference>
Chris@16:         , OutEdgeIter
Chris@16:         , Vertex
Chris@16:         , use_default
Chris@16:         , Vertex
Chris@16:         , Difference
Chris@16:       >
Chris@16:   {
Chris@16:       typedef iterator_adaptor<
Chris@16:           adjacency_iterator<Graph,Vertex,OutEdgeIter,Difference>
Chris@16:         , OutEdgeIter
Chris@16:         , Vertex
Chris@16:         , use_default
Chris@16:         , Vertex
Chris@16:         , Difference
Chris@16:       > super_t;
Chris@16:       
Chris@16:       inline adjacency_iterator() {}
Chris@16:       inline adjacency_iterator(OutEdgeIter const& i, const Graph* g) : super_t(i), m_g(g) { }
Chris@16: 
Chris@16:       inline Vertex
Chris@16:       dereference() const
Chris@16:         { return target(*this->base(), *m_g); }
Chris@16: 
Chris@16:       const Graph* m_g;
Chris@16:   };
Chris@16: 
Chris@16:   template <class Graph,
Chris@16:             class Vertex = typename graph_traits<Graph>::vertex_descriptor,
Chris@16:             class OutEdgeIter=typename graph_traits<Graph>::out_edge_iterator>
Chris@16:   class adjacency_iterator_generator
Chris@16:   {
Chris@16:     typedef typename boost::detail::iterator_traits<OutEdgeIter>
Chris@16:       ::difference_type difference_type;
Chris@16:   public:
Chris@16:       typedef adjacency_iterator<Graph,Vertex,OutEdgeIter,difference_type> type;
Chris@16:   };
Chris@16: 
Chris@16:   template <class Graph, class Vertex, class InEdgeIter, class Difference>
Chris@16:   struct inv_adjacency_iterator
Chris@16:     : iterator_adaptor<
Chris@16:           inv_adjacency_iterator<Graph,Vertex,InEdgeIter,Difference>
Chris@16:         , InEdgeIter
Chris@16:         , Vertex
Chris@16:         , use_default
Chris@16:         , Vertex
Chris@16:         , Difference
Chris@16:       >
Chris@16:     {
Chris@16:       typedef iterator_adaptor<
Chris@16:                   inv_adjacency_iterator<Graph,Vertex,InEdgeIter,Difference>
Chris@16:                 , InEdgeIter
Chris@16:                 , Vertex
Chris@16:                 , use_default
Chris@16:                 , Vertex
Chris@16:                 , Difference
Chris@16:               > super_t;
Chris@16: 
Chris@16:       inline inv_adjacency_iterator() { }
Chris@16:       inline inv_adjacency_iterator(InEdgeIter const& i, const Graph* g) : super_t(i), m_g(g) { }
Chris@16: 
Chris@16:       inline Vertex
Chris@16:       dereference() const
Chris@16:         { return source(*this->base(), *m_g); }
Chris@16: 
Chris@16:       const Graph* m_g;
Chris@16:     };
Chris@16: 
Chris@16:   template <class Graph,
Chris@16:             class Vertex = typename graph_traits<Graph>::vertex_descriptor,
Chris@16:             class InEdgeIter = typename graph_traits<Graph>::in_edge_iterator>
Chris@16:   class inv_adjacency_iterator_generator {
Chris@16:     typedef typename boost::detail::iterator_traits<InEdgeIter>
Chris@16:       ::difference_type difference_type;
Chris@16:   public:
Chris@16:       typedef inv_adjacency_iterator<Graph, Vertex, InEdgeIter, difference_type> type;
Chris@16:   };
Chris@16: 
Chris@16: } // namespace boost
Chris@16: 
Chris@16: #endif // BOOST_DETAIL_ADJACENCY_ITERATOR_HPP