// -*- c++ -*-

#ifndef LEMON_IDMAPPABLE_GRAPH_EXTENDER_H

#define LEMON_IDMAPPABLE_GRAPH_EXTENDER_H

namespace lemon {

  template <typename Base> 

  class IdMappableGraphExtender : public Base {

  public:

    typedef IdMappableGraphExtender Graph;

    typedef Base Parent;

    typedef typename Parent::Node Node;

    typedef typename Parent::Edge Edge;

  public:

    class NodeIdMap {

    private:

      const Graph* graph;

    public:

      NodeIdMap(const Graph& g) : graph(&g) {}

      int operator[](const Node& node) const { return graph->id(node); }

      int maxId() const {return graph->maxNodeId(); }

    };

    class EdgeIdMap {

    private:

      const Graph* graph;

    public:

      EdgeIdMap(const Graph& g) : graph(&g) {}

      int operator[](const Edge& edge) const { return graph->id(edge); }

      int maxId() const {return graph->maxEdgeId(); }

    };

  };

}

#endif