rev_edge_map.h

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namespace pr_bgl
{

template <class G>
class rev_edge_map
{
public:
   typedef typename boost::graph_traits<G>::edge_descriptor GEdge;
   typedef typename boost::reverse_graph<G> R;
   typedef typename boost::graph_traits<R>::edge_descriptor REdge;
   typedef REdge key_type;
   typedef GEdge value_type;
   typedef GEdge reference;
   typedef boost::readable_property_map_tag category;
   const R & rgp;
   rev_edge_map(const R & in) : rgp(in) {}
};

template <class G>
inline typename pr_bgl::rev_edge_map<G>::GEdge
get(const rev_edge_map<G>& map, const typename pr_bgl::rev_edge_map<G>::REdge& k)
{
   return boost::get(boost::edge_underlying_t(), map.rgp, k);
}

} // namespace pr_bgl