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//=======================================================================
// Copyright 2001 University of Notre Dame.
// Copyright 2003 Jeremy Siek
// Authors: Lie-Quan Lee and Jeremy Siek
//
// 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)
//=======================================================================
#ifndef BOOST_GRAPHVIZ_HPP
#define BOOST_GRAPHVIZ_HPP

#include <boost/config.hpp>
#include <string>
#include <map>
#include <iostream>
#include <fstream>
#include <stdio.h> // for FILE
#include <boost/property_map.hpp>
#include <boost/tuple/tuple.hpp>
#include <boost/graph/graph_traits.hpp>
#include <boost/graph/properties.hpp>
#include <boost/graph/subgraph.hpp>
#include <boost/graph/adjacency_list.hpp>
#include <boost/dynamic_property_map.hpp>

#ifdef BOOST_HAS_DECLSPEC
#  if defined(BOOST_ALL_DYN_LINK) || defined(BOOST_GRAPH_DYN_LINK)
#    ifdef BOOST_GRAPH_SOURCE
#      define BOOST_GRAPH_DECL __declspec(dllexport)
#    else
#      define BOOST_GRAPH_DECL __declspec(dllimport)
#    endif  // BOOST_GRAPH_SOURCE
#  endif  // DYN_LINK
#endif  // BOOST_HAS_DECLSPEC

#ifndef BOOST_GRAPH_DECL
#  define BOOST_GRAPH_DECL
#endif

namespace boost {

  template <typename directed_category>
  struct graphviz_io_traits {
    static std::string name() {
      return "digraph";
    }
    static std::string delimiter() {
      return "->";
    }  };

  template <>
  struct graphviz_io_traits <undirected_tag> {
    static std::string name() {
      return "graph";
    }
    static std::string delimiter() {
      return "--";
    }
  };

  struct default_writer {
    void operator()(std::ostream&) const {
    }
    template <class VorE>
    void operator()(std::ostream&, const VorE&) const {
    }
  };

  template <class Name>
  class label_writer {
  public:
    label_writer(Name _name) : name(_name) {}
    template <class VertexOrEdge>
    void operator()(std::ostream& out, const VertexOrEdge& v) const {
      out << "[label=\"" << get(name, v) << "\"]";
    }
  private:
    Name name;
  };
  template <class Name>
  inline label_writer<Name>
  make_label_writer(Name n) {
    return label_writer<Name>(n);
  }

  enum edge_attribute_t        { edge_attribute        = 1111 };
  enum vertex_attribute_t      { vertex_attribute      = 2222 };
  enum graph_graph_attribute_t { graph_graph_attribute = 3333 };
  enum graph_vertex_attribute_t  { graph_vertex_attribute  = 4444 };
  enum graph_edge_attribute_t  { graph_edge_attribute  = 5555 };

  BOOST_INSTALL_PROPERTY(edge, attribute);
  BOOST_INSTALL_PROPERTY(vertex, attribute);
  BOOST_INSTALL_PROPERTY(graph, graph_attribute);
  BOOST_INSTALL_PROPERTY(graph, vertex_attribute);
  BOOST_INSTALL_PROPERTY(graph, edge_attribute);


  template <class Attribute>
  inline void write_attributes(const Attribute& attr, std::ostream& out) {
    typename Attribute::const_iterator i, iend;
    i    = attr.begin();
    iend = attr.end();

    while ( i != iend ) {
      out << i->first << "=\"" << i->second << "\"";
      ++i;
      if ( i != iend )
        out << ", ";
    }
  }

  template<typename Attributes>
  inline void write_all_attributes(Attributes attributes,
                                   const std::string& name,
                                   std::ostream& out)
  {
    typename Attributes::const_iterator i = attributes.begin(),
                                        end = attributes.end();
    if (i != end) {
      out << name << " [\n";
      write_attributes(attributes, out);
      out << "];\n";
    }
  }

  inline void write_all_attributes(detail::error_property_not_found,
                                   const std::string&,
                                   std::ostream&)
  {
    // Do nothing - no attributes exist
  }




  template <typename GraphGraphAttributes,
            typename GraphNodeAttributes,
            typename GraphEdgeAttributes>
  struct graph_attributes_writer
  {
    graph_attributes_writer(GraphGraphAttributes gg,
                            GraphNodeAttributes gn,
                            GraphEdgeAttributes ge)
      : g_attributes(gg), n_attributes(gn), e_attributes(ge) { }

    void operator()(std::ostream& out) const {
      write_all_attributes(g_attributes, "graph", out);
      write_all_attributes(n_attributes, "node", out);
      write_all_attributes(e_attributes, "edge", out);
    }
    GraphGraphAttributes g_attributes;
    GraphNodeAttributes n_attributes;
    GraphEdgeAttributes e_attributes;
  };

  template <typename GAttrMap, typename NAttrMap, typename EAttrMap>
  graph_attributes_writer<GAttrMap, NAttrMap, EAttrMap>
  make_graph_attributes_writer(const GAttrMap& g_attr, const NAttrMap& n_attr,
                              const EAttrMap& e_attr) {
    return graph_attributes_writer<GAttrMap, NAttrMap, EAttrMap>
      (g_attr, n_attr, e_attr);
  }


  template <typename Graph>
  graph_attributes_writer
    <typename graph_property<Graph, graph_graph_attribute_t>::type,
     typename graph_property<Graph, graph_vertex_attribute_t>::type,
     typename graph_property<Graph, graph_edge_attribute_t>::type>
  make_graph_attributes_writer(const Graph& g)
  {
    typedef typename graph_property<Graph, graph_graph_attribute_t>::type
      GAttrMap;
    typedef typename graph_property<Graph, graph_vertex_attribute_t>::type
      NAttrMap;
    typedef typename graph_property<Graph, graph_edge_attribute_t>::type
      EAttrMap;
    GAttrMap gam = get_property(g, graph_graph_attribute);
    NAttrMap nam = get_property(g, graph_vertex_attribute);
    EAttrMap eam = get_property(g, graph_edge_attribute);
    graph_attributes_writer<GAttrMap, NAttrMap, EAttrMap> writer(gam, nam, eam);
    return writer;
  }

  template <typename AttributeMap>
  struct attributes_writer {
    attributes_writer(AttributeMap attr)
      : attributes(attr) { }

    template <class VorE>
    void operator()(std::ostream& out, const VorE& e) const {
      this->write_attribute(out, attributes[e]);
    }

    private:
      template<typename AttributeSequence>
      void write_attribute(std::ostream& out,
                           const AttributeSequence& seq) const
      {
        if (!seq.empty()) {
          out << "[";
          write_attributes(seq, out);
          out << "]";
        }
      }

      void write_attribute(std::ostream&,
                           detail::error_property_not_found) const
      {
      }
    AttributeMap attributes;
  };

  template <typename Graph>
  attributes_writer
    <typename property_map<Graph, edge_attribute_t>::const_type>
  make_edge_attributes_writer(const Graph& g)
  {
    typedef typename property_map<Graph, edge_attribute_t>::const_type
      EdgeAttributeMap;
    return attributes_writer<EdgeAttributeMap>(get(edge_attribute, g));
  }

  template <typename Graph>
  attributes_writer
    <typename property_map<Graph, vertex_attribute_t>::const_type>
  make_vertex_attributes_writer(const Graph& g)
  {
    typedef typename property_map<Graph, vertex_attribute_t>::const_type
      VertexAttributeMap;
    return attributes_writer<VertexAttributeMap>(get(vertex_attribute, g));
  }

  template <typename Graph, typename VertexPropertiesWriter,
            typename EdgePropertiesWriter, typename GraphPropertiesWriter,
            typename VertexID>
  inline void write_graphviz(std::ostream& out, const Graph& g,
                             VertexPropertiesWriter vpw,
                             EdgePropertiesWriter epw,
                             GraphPropertiesWriter gpw,
                             VertexID vertex_id)
  {
    typedef typename graph_traits<Graph>::directed_category cat_type;
    typedef graphviz_io_traits<cat_type> Traits;
    std::string name = "G";
    out << Traits::name() << " " << name << " {" << std::endl;

    gpw(out); //print graph properties

    typename graph_traits<Graph>::vertex_iterator i, end;

    for(tie(i,end) = vertices(g); i != end; ++i) {
      out << get(vertex_id, *i);
      vpw(out, *i); //print vertex attributes
      out << ";" << std::endl;
    }
    typename graph_traits<Graph>::edge_iterator ei, edge_end;
    for(tie(ei, edge_end) = edges(g); ei != edge_end; ++ei) {
      out << get(vertex_id, source(*ei, g)) << Traits::delimiter() << get(vertex_id, target(*ei, g)) << " ";
      epw(out, *ei); //print edge attributes
      out << ";" << std::endl;
    }
    out << "}" << std::endl;
  }

  template <typename Graph, typename VertexPropertiesWriter,
            typename EdgePropertiesWriter, typename GraphPropertiesWriter>
  inline void write_graphviz(std::ostream& out, const Graph& g,
                             VertexPropertiesWriter vpw,
                             EdgePropertiesWriter epw,
                             GraphPropertiesWriter gpw)
  { write_graphviz(out, g, vpw, epw, gpw, get(vertex_index, g)); }

#if !defined(BOOST_MSVC) || BOOST_MSVC > 1300
  // ambiguous overload problem with VC++
  template <typename Graph>
  inline void
  write_graphviz(std::ostream& out, const Graph& g) {
    default_writer dw;
    default_writer gw;
    write_graphviz(out, g, dw, dw, gw);
  }
#endif

  template <typename Graph, typename VertexWriter>
  inline void
  write_graphviz(std::ostream& out, const Graph& g, VertexWriter vw) {
    default_writer dw;
    default_writer gw;
    write_graphviz(out, g, vw, dw, gw);
  }

  template <typename Graph, typename VertexWriter, typename EdgeWriter>
  inline void
  write_graphviz(std::ostream& out, const Graph& g,
                 VertexWriter vw, EdgeWriter ew) {
    default_writer gw;
    write_graphviz(out, g, vw, ew, gw);
  }

  namespace detail {

    template <class Graph_, class RandomAccessIterator, class VertexID>
    void write_graphviz_subgraph (std::ostream& out,
                                  const subgraph<Graph_>& g,
                                  RandomAccessIterator vertex_marker,
                                  RandomAccessIterator edge_marker,
                                  VertexID vertex_id)
    {
      typedef subgraph<Graph_> Graph;
      typedef typename graph_traits<Graph>::vertex_descriptor Vertex;
      typedef typename graph_traits<Graph>::directed_category cat_type;
      typedef graphviz_io_traits<cat_type> Traits;

      typedef typename graph_property<Graph, graph_name_t>::type NameType;
      const NameType& g_name = get_property(g, graph_name);

      if ( g.is_root() )
        out << Traits::name() ;
      else
        out << "subgraph";

      out << " " << g_name << " {" << std::endl;

      typename Graph::const_children_iterator i_child, j_child;

      //print graph/node/edge attributes
#if defined(BOOST_MSVC) && BOOST_MSVC <= 1300
      typedef typename graph_property<Graph, graph_graph_attribute_t>::type
        GAttrMap;
      typedef typename graph_property<Graph, graph_vertex_attribute_t>::type
        NAttrMap;
      typedef typename graph_property<Graph, graph_edge_attribute_t>::type
        EAttrMap;
      GAttrMap gam = get_property(g, graph_graph_attribute);
      NAttrMap nam = get_property(g, graph_vertex_attribute);
      EAttrMap eam = get_property(g, graph_edge_attribute);
      graph_attributes_writer<GAttrMap, NAttrMap, EAttrMap> writer(gam, nam, eam);
      writer(out);
#else
      make_graph_attributes_writer(g)(out);
#endif

      //print subgraph
      for ( tie(i_child,j_child) = g.children();
            i_child != j_child; ++i_child )
        write_graphviz_subgraph(out, *i_child, vertex_marker, edge_marker,
                                vertex_id);

      // Print out vertices and edges not in the subgraphs.

      typename graph_traits<Graph>::vertex_iterator i, end;
      typename graph_traits<Graph>::edge_iterator ei, edge_end;

      for(tie(i,end) = vertices(g); i != end; ++i) {
        Vertex v = g.local_to_global(*i);
        int pos = get(vertex_id, v);
        if ( vertex_marker[pos] ) {
          vertex_marker[pos] = false;
          out << pos;
#if defined(BOOST_MSVC) && BOOST_MSVC <= 1300
          typedef typename property_map<Graph, vertex_attribute_t>::const_type
            VertexAttributeMap;
          attributes_writer<VertexAttributeMap> vawriter(get(vertex_attribute,
                                                             g.root()));
          vawriter(out, v);
#else
          make_vertex_attributes_writer(g.root())(out, v);
#endif
          out << ";" << std::endl;
        }
      }

      for (tie(ei, edge_end) = edges(g); ei != edge_end; ++ei) {
        Vertex u = g.local_to_global(source(*ei,g)),
          v = g.local_to_global(target(*ei, g));
        int pos = get(get(edge_index, g.root()), g.local_to_global(*ei));
        if ( edge_marker[pos] ) {
          edge_marker[pos] = false;
          out << get(vertex_id, u) << " " << Traits::delimiter()
              << " " << get(vertex_id, v);
#if defined(BOOST_MSVC) && BOOST_MSVC <= 1300
          typedef typename property_map<Graph, edge_attribute_t>::const_type
            EdgeAttributeMap;
          attributes_writer<EdgeAttributeMap> eawriter(get(edge_attribute, g));
          eawriter(out, *ei);
#else
          make_edge_attributes_writer(g)(out, *ei); //print edge properties
#endif
          out << ";" << std::endl;
        }
      }
      out << "}" << std::endl;
    }
  } // namespace detail

  // requires graph_name graph property
  template <typename Graph>
  void write_graphviz(std::ostream& out, const subgraph<Graph>& g) {
    std::vector<bool> edge_marker(num_edges(g), true);
    std::vector<bool> vertex_marker(num_vertices(g), true);

    detail::write_graphviz_subgraph(out, g,
                                    vertex_marker.begin(),
                                    edge_marker.begin(), 
                                    get(vertex_index, g));
  }

  template <typename Graph>
  void write_graphviz(const std::string& filename, const subgraph<Graph>& g) {
    std::ofstream out(filename.c_str());
    std::vector<bool> edge_marker(num_edges(g), true);
    std::vector<bool> vertex_marker(num_vertices(g), true);

    detail::write_graphviz_subgraph(out, g,
                                    vertex_marker.begin(),
                                    edge_marker.begin(),
                                    get(vertex_index, g));
  }

  template <typename Graph, typename VertexID>
  void write_graphviz(std::ostream& out, const subgraph<Graph>& g,
                      VertexID vertex_id) 
  {
    std::vector<bool> edge_marker(num_edges(g), true);
    std::vector<bool> vertex_marker(num_vertices(g), true);

    detail::write_graphviz_subgraph(out, g,
                                    vertex_marker.begin(),
                                    edge_marker.begin(), 
                                    vertex_id);
  }

  template <typename Graph, typename VertexID>
  void write_graphviz(const std::string& filename, const subgraph<Graph>& g,
                      VertexID vertex_id) 
  {
    std::ofstream out(filename.c_str());
    std::vector<bool> edge_marker(num_edges(g), true);
    std::vector<bool> vertex_marker(num_vertices(g), true);

    detail::write_graphviz_subgraph(out, g,
                                    vertex_marker.begin(),
                                    edge_marker.begin(),
                                    vertex_id);
  }

  typedef std::map<std::string, std::string> GraphvizAttrList;

  typedef property<vertex_attribute_t, GraphvizAttrList>
          GraphvizVertexProperty;

  typedef property<edge_attribute_t, GraphvizAttrList,
                   property<edge_index_t, int> >
          GraphvizEdgeProperty;

  typedef property<graph_graph_attribute_t, GraphvizAttrList,
                   property<graph_vertex_attribute_t, GraphvizAttrList,
                   property<graph_edge_attribute_t, GraphvizAttrList,
                   property<graph_name_t, std::string> > > >
          GraphvizGraphProperty;

  typedef subgraph<adjacency_list<vecS,
                   vecS, directedS,
                   GraphvizVertexProperty,
                   GraphvizEdgeProperty,
                   GraphvizGraphProperty> >
          GraphvizDigraph;

  typedef subgraph<adjacency_list<vecS,
                   vecS, undirectedS,
                   GraphvizVertexProperty,
                   GraphvizEdgeProperty,
                   GraphvizGraphProperty> >
          GraphvizGraph;


  // These four require linking the BGL-Graphviz library: libbgl-viz.a
  // from the /src directory.
  extern void read_graphviz(const std::string& file, GraphvizDigraph& g);
  extern void read_graphviz(FILE* file, GraphvizDigraph& g);

  extern void read_graphviz(const std::string& file, GraphvizGraph& g);
  extern void read_graphviz(FILE* file, GraphvizGraph& g);

  class dynamic_properties_writer
  {
  public:
    dynamic_properties_writer(const dynamic_properties& dp) : dp(&dp) { }

    template<typename Descriptor>
    void operator()(std::ostream& out, Descriptor key) const
    {
      bool first = true;
      for (dynamic_properties::const_iterator i = dp->begin(); 
           i != dp->end(); ++i) {
        if (typeid(key) == i->second->key()) {
          if (first) out << " [";
          else out << ", ";
          first = false;

          out << i->first << "=\"" << i->second->get_string(key) << "\"";
        }
      }

      if (!first) out << "]";
    }

  private:
    const dynamic_properties* dp;
  };

  class dynamic_vertex_properties_writer
  {
  public:
    dynamic_vertex_properties_writer(const dynamic_properties& dp,
                                     const std::string& node_id) 
      : dp(&dp), node_id(&node_id) { }

    template<typename Descriptor>
    void operator()(std::ostream& out, Descriptor key) const
    {
      bool first = true;
      for (dynamic_properties::const_iterator i = dp->begin(); 
           i != dp->end(); ++i) {
        if (typeid(key) == i->second->key()
            && i->first != *node_id) {
          if (first) out << " [";
          else out << ", ";
          first = false;

          out << i->first << "=\"" << i->second->get_string(key) << "\"";
        }
      }

      if (!first) out << "]";
    }

  private:
    const dynamic_properties* dp;
    const std::string* node_id;
  };

  namespace graph { namespace detail {

    template<typename Vertex>
    struct node_id_property_map
    {
      typedef std::string value_type;
      typedef value_type reference;
      typedef Vertex key_type;
      typedef readable_property_map_tag category;

      node_id_property_map() {}

      node_id_property_map(const dynamic_properties& dp,
                           const std::string& node_id)
        : dp(&dp), node_id(&node_id) { }

      const dynamic_properties* dp;
      const std::string* node_id;
    };

    template<typename Vertex>
    inline std::string 
    get(node_id_property_map<Vertex> pm, 
        typename node_id_property_map<Vertex>::key_type v)
    { return get(*pm.node_id, *pm.dp, v); }

  } } // end namespace graph::detail

  template<typename Graph>
  inline void
  write_graphviz(std::ostream& out, const Graph& g,
                 const dynamic_properties& dp, 
                 const std::string& node_id = "node_id")
  {
    typedef typename graph_traits<Graph>::vertex_descriptor Vertex;
    write_graphviz(out, g, dp, node_id,
                   graph::detail::node_id_property_map<Vertex>(dp, node_id));
  }

  template<typename Graph, typename VertexID>
  void
  write_graphviz(std::ostream& out, const Graph& g,
                 const dynamic_properties& dp, const std::string& node_id,
                 VertexID id)
  {
    write_graphviz
      (out, g,
       /*vertex_writer=*/dynamic_vertex_properties_writer(dp, node_id),
       /*edge_writer=*/dynamic_properties_writer(dp),
       /*graph_writer=*/default_writer(),
       id);
  }

/////////////////////////////////////////////////////////////////////////////
// Graph reader exceptions
/////////////////////////////////////////////////////////////////////////////
struct graph_exception : public std::exception {
  virtual ~graph_exception() throw() {}
  virtual const char* what() const throw() = 0;
};

struct bad_parallel_edge : public graph_exception {
  std::string from;
  std::string to;
  mutable std::string statement;
  bad_parallel_edge(const std::string& i, const std::string& j) :
    from(i), to(j) {}

  virtual ~bad_parallel_edge() throw() {}
  const char* what() const throw() {
    if(statement.empty())
      statement =
        std::string("Failed to add parallel edge: (")
        + from +  "," + to + ")\n";

    return statement.c_str();
  }
};

struct directed_graph_error : public graph_exception {
  virtual ~directed_graph_error() throw() {}
  virtual const char* what() const throw() {
    return
      "read_graphviz: "
      "Tried to read a directed graph into an undirected graph.";
  }
};

struct undirected_graph_error : public graph_exception {
  virtual ~undirected_graph_error() throw() {}
  virtual const char* what() const throw() {
    return
      "read_graphviz: "
      "Tried to read an undirected graph into a directed graph.";
  }
};

namespace detail { namespace graph {

typedef std::string id_t;
typedef id_t node_t;

// edges are not uniquely determined by adjacent nodes
class edge_t {
  int idx_;
  explicit edge_t(int i) : idx_(i) {}
public:
  static edge_t new_edge() {
    static int idx = 0;
    return edge_t(idx++);
  };
  
  bool operator==(const edge_t& rhs) const {
    return idx_ == rhs.idx_;
  }
  bool operator<(const edge_t& rhs) const {
    return idx_ < rhs.idx_;
  }
};

class mutate_graph
{
 public:
  virtual ~mutate_graph() {}
  virtual bool is_directed() const = 0;
  virtual void do_add_vertex(const node_t& node) = 0;

  virtual void 
  do_add_edge(const edge_t& edge, const node_t& source, const node_t& target)
    = 0;

  virtual void 
  set_node_property(const id_t& key, const node_t& node, const id_t& value) = 0;

  virtual void 
  set_edge_property(const id_t& key, const edge_t& edge, const id_t& value) = 0;

  virtual void  // RG: need new second parameter to support BGL subgraphs
  set_graph_property(const id_t& key, const id_t& value) = 0;
};

template<typename MutableGraph>
class mutate_graph_impl : public mutate_graph
{
  typedef typename graph_traits<MutableGraph>::vertex_descriptor bgl_vertex_t;
  typedef typename graph_traits<MutableGraph>::edge_descriptor   bgl_edge_t;

 public:
  mutate_graph_impl(MutableGraph& graph, dynamic_properties& dp,
                    std::string node_id_prop)
    : graph_(graph), dp_(dp), node_id_prop_(node_id_prop) { }

  ~mutate_graph_impl() {}

  bool is_directed() const
  {
    return 
      boost::is_convertible<
        typename boost::graph_traits<MutableGraph>::directed_category,
        boost::directed_tag>::value;
  }

  virtual void do_add_vertex(const node_t& node)
  {
    // Add the node to the graph.
    bgl_vertex_t v = add_vertex(graph_);

    // Set up a mapping from name to BGL vertex.
    bgl_nodes.insert(std::make_pair(node, v));
    
    // node_id_prop_ allows the caller to see the real id names for nodes.
    put(node_id_prop_, dp_, v, node);
  }

  void 
  do_add_edge(const edge_t& edge, const node_t& source, const node_t& target)
  {
    std::pair<bgl_edge_t, bool> result =
     add_edge(bgl_nodes[source], bgl_nodes[target], graph_);
    
    if(!result.second) {
      // In the case of no parallel edges allowed
      throw bad_parallel_edge(source, target);
    } else {
      bgl_edges.insert(std::make_pair(edge, result.first));
    }
  }

  void
  set_node_property(const id_t& key, const node_t& node, const id_t& value)
  {
    put(key, dp_, bgl_nodes[node], value);
  }

  void
  set_edge_property(const id_t& key, const edge_t& edge, const id_t& value)
  {
    put(key, dp_, bgl_edges[edge], value);
  }

  void
  set_graph_property(const id_t& key, const id_t& value)
  {
    /* RG: pointer to graph prevents copying */
    put(key, dp_, &graph_, value);
  }

    
 protected:
  MutableGraph& graph_;
  dynamic_properties& dp_;
  std::string node_id_prop_;
  std::map<node_t, bgl_vertex_t> bgl_nodes;
  std::map<edge_t, bgl_edge_t> bgl_edges;
};

BOOST_GRAPH_DECL
bool read_graphviz(std::istream& in, mutate_graph& graph);

} } // end namespace detail::graph

// Parse the passed stream as a GraphViz dot file.
template <typename MutableGraph>
bool read_graphviz(std::istream& in, MutableGraph& graph,
                   dynamic_properties& dp,
                   std::string const& node_id = "node_id") 
{
  detail::graph::mutate_graph_impl<MutableGraph> m_graph(graph, dp, node_id);
  return detail::graph::read_graphviz(in, m_graph);
}

} // namespace boost

#ifdef BOOST_GRAPH_READ_GRAPHVIZ_ITERATORS
#  include <boost/graph/detail/read_graphviz_spirit.hpp>
#endif // BOOST_GRAPH_READ_GRAPHVIZ_ITERATORS

#endif // BOOST_GRAPHVIZ_HPP
graphviz.hpp
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