#include <fstream>

#include <iostream>

#include <lemon/xy.h>

#include <lemon/maps.h>

#include <lemon/error.h>

#include <lemon/list_graph.h>

#include <lemon/graph_reader.h>

#include <lemon/graph_utils.h>

using namespace lemon;

typedef ListGraph Graph;

typedef xy<double> Coordinates;

typedef Graph::NodeMap<Coordinates> CoordinatesMap;

typedef Graph::Node Node;

class CoordReaderMap: public MapBase<Node, double>

{

    CoordinatesMap * cm;

    char xoy;

public:

    CoordReaderMap(char xory, CoordinatesMap * coordmap): cm(coordmap)

    {

	switch(xory)

	{

	    case 'x':

	    case 'y':

		xoy=xory;

		break;

	    default:

		throw UninitializedParameter() ;

	}

    }

    void set(Node node, double coord)

    {

	switch(xoy)

	{

	    case 'x':

		(*cm)[node].x=coord;

		break;

	    case 'y':

		(*cm)[node].y=coord;

		break;

	    default:

		throw UninitializedParameter() ;

	}

    }

};

int main(void)

{

    Graph g;

    CoordinatesMap cm(g);

    CoordReaderMap xreader('x',&cm);

    CoordReaderMap yreader('y',&cm);

    std::ifstream is("dijkstra_test.lemon");

    GraphReader<Graph> reader(is, g);

    reader.addNodeMap("coordinates_x", xreader);

    reader.addNodeMap("coordinates_y", yreader);

    reader.run();

    return 0;

}