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3rdparty/boost_1_81_0/libs/graph/example/dfs-parenthesis.cpp 1.59 KB
977ed18d   Hu Chunming   提交三方库
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  //=======================================================================
  // Copyright 2001 Jeremy G. Siek, Andrew Lumsdaine, Lie-Quan Lee,
  //
  // Distributed under the Boost Software License, Version 1.0. (See
  // accompanying file LICENSE_1_0.txt or copy at
  // http://www.boost.org/LICENSE_1_0.txt)
  //=======================================================================
  
  /*
     IMPORTANT!!!
     ~~~~~~~~~~~~
     This example uses interfaces that have been deprecated and removed from
     Boost.Grpah. Someone needs to update it, as it does NOT compile.
  */
  
  #include <boost/graph/graphviz.hpp>
  #include <boost/graph/depth_first_search.hpp>
  
  char name[] = "abcdefghij";
  
  struct parenthesis_visitor : public boost::default_dfs_visitor
  {
      template < class Vertex, class Graph >
      void start_vertex(Vertex v, const Graph&)
      {
          std::cout << ' ';
      }
      template < class Vertex, class Graph >
      void discover_vertex(Vertex v, const Graph&)
      {
          std::cout << "(" << name[v] << ' ';
      }
      template < class Vertex, class Graph >
      void finish_vertex(Vertex v, const Graph&)
      {
          std::cout << ' ' << name[v] << ")";
      }
  };
  
  int main()
  {
      using namespace boost;
      GraphvizGraph g;
      read_graphviz("figs/dfs-example.dot", g);
      graph_traits< GraphvizGraph >::edge_iterator e, e_end;
      for (boost::tie(e, e_end) = edges(g); e != e_end; ++e)
          std::cout << '(' << name[source(*e, g)] << ' ' << name[target(*e, g)]
                    << ')' << std::endl;
      parenthesis_visitor paren_vis;
      depth_first_search(g, visitor(paren_vis));
      std::cout << std::endl;
      return 0;
  }