//=======================================================================
// Copyright 2001 Jeremy G. Siek, Andrew Lumsdaine, Lie-Quan Lee, 
//
// This file is part of the Boost Graph Library
//
// You should have received a copy of the License Agreement for the
// Boost Graph Library along with the software; see the file LICENSE.
// If not, contact Office of Research, Indiana University,
// Bloomington, IN 47405.
//
// Permission to modify the code and to distribute the code is
// granted, provided the text of this NOTICE is retained, a notice if
// the code was modified is included with the above COPYRIGHT NOTICE
// and with the COPYRIGHT NOTICE in the LICENSE file, and that the
// LICENSE file is distributed with the modified code.
//
// LICENSOR MAKES NO REPRESENTATIONS OR WARRANTIES, EXPRESS OR IMPLIED.
// By way of example, but not limitation, Licensor MAKES NO
// REPRESENTATIONS OR WARRANTIES OF MERCHANTABILITY OR FITNESS FOR ANY
// PARTICULAR PURPOSE OR THAT THE USE OF THE LICENSED SOFTWARE COMPONENTS
// OR DOCUMENTATION WILL NOT INFRINGE ANY PATENTS, COPYRIGHTS, TRADEMARKS
// OR OTHER RIGHTS.
//=======================================================================
#include <boost/config.hpp>
#include <fstream>
#include <boost/graph/adjacency_list.hpp>
#include <boost/graph/graph_utility.hpp>

using namespace boost;

template < typename T >
  std::istream & operator >> (std::istream & in, std::pair < T, T > &p) {
  in >> p.first >> p.second;
  return in;
}


int
main()
{
  typedef
    adjacency_list <
    listS,                      // Store out-edges of each vertex in a std::list
    vecS,                       // Store vertex set in a std::vector
    directedS                   // The graph is directed
    >
    graph_type;

  std::ifstream file_in("makefile-dependencies.dat");
  typedef
    graph_traits <
    graph_type >::vertices_size_type
    size_type;
  size_type
    n_vertices;
  file_in >> n_vertices;        // read in number of vertices

  graph_type
  g(n_vertices);                // create graph with n vertices

  // Read in edges
  graph_traits < graph_type >::vertices_size_type u, v;
  while (file_in >> u)
    if (file_in >> v)
      add_edge(u, v, g);
    else
      break;

  assert(num_vertices(g) == 15);
  assert(num_edges(g) == 19);
  return 0;
}