src/lemon/graph_wrapper.h
changeset 1091 c756973cd53c
parent 1016 18d009b23e42
child 1135 cfccb33ecf7b
equal deleted inserted replaced
13:3b4c7db33a97 14:0814060674eb
   123     GraphWrapperBase() : graph(0) { }
   123     GraphWrapperBase() : graph(0) { }
   124     void setGraph(Graph& _graph) { graph=&_graph; }
   124     void setGraph(Graph& _graph) { graph=&_graph; }
   125 
   125 
   126   public:
   126   public:
   127     GraphWrapperBase(Graph& _graph) : graph(&_graph) { }
   127     GraphWrapperBase(Graph& _graph) : graph(&_graph) { }
   128 //     GraphWrapperBase(const GraphWrapperBase<_Graph>& gw) : graph(gw.graph) { }
       
   129  
   128  
   130     typedef typename Graph::Node Node;
   129     typedef typename Graph::Node Node;
   131     typedef typename Graph::Edge Edge;
   130     typedef typename Graph::Edge Edge;
   132    
   131    
   133     void first(Node& i) const { graph->first(i); }
   132     void first(Node& i) const { graph->first(i); }
   134     void first(Edge& i) const { graph->first(i); }
   133     void first(Edge& i) const { graph->first(i); }
   135     void firstIn(Edge& i, const Node& n) const { graph->firstIn(i, n); }
   134     void firstIn(Edge& i, const Node& n) const { graph->firstIn(i, n); }
   136     void firstOut(Edge& i, const Node& n ) const { graph->firstOut(i, n); }
   135     void firstOut(Edge& i, const Node& n ) const { graph->firstOut(i, n); }
   137 //     NodeIt& first(NodeIt& i) const { 
       
   138 //       i=NodeIt(*this); return i;
       
   139 //     }
       
   140 //     OutEdgeIt& first(OutEdgeIt& i, const Node& p) const { 
       
   141 //       i=OutEdgeIt(*this, p); return i;
       
   142 //     }
       
   143 //     InEdgeIt& first(InEdgeIt& i, const Node& p) const { 
       
   144 //       i=InEdgeIt(*this, p); return i;
       
   145 //     }
       
   146 //     EdgeIt& first(EdgeIt& i) const { 
       
   147 //       i=EdgeIt(*this); return i;
       
   148 //     }
       
   149 
   136 
   150     void next(Node& i) const { graph->next(i); }
   137     void next(Node& i) const { graph->next(i); }
   151     void next(Edge& i) const { graph->next(i); }
   138     void next(Edge& i) const { graph->next(i); }
   152     void nextIn(Edge& i) const { graph->nextIn(i); }
   139     void nextIn(Edge& i) const { graph->nextIn(i); }
   153     void nextOut(Edge& i) const { graph->nextOut(i); }
   140     void nextOut(Edge& i) const { graph->nextOut(i); }
   154 
   141 
   155     Node source(const Edge& e) const { return graph->source(e); }
   142     Node source(const Edge& e) const { return graph->source(e); }
   156     Node target(const Edge& e) const { return graph->target(e); }
   143     Node target(const Edge& e) const { return graph->target(e); }
   157 //     Node source(const Edge& e) const { 
       
   158 //       return Node(graph->source(static_cast<typename Graph::Edge>(e))); }
       
   159 //     Node target(const Edge& e) const { 
       
   160 //       return Node(graph->target(static_cast<typename Graph::Edge>(e))); }
       
   161 
   144 
   162     int nodeNum() const { return graph->nodeNum(); }
   145     int nodeNum() const { return graph->nodeNum(); }
   163     int edgeNum() const { return graph->edgeNum(); }
   146     int edgeNum() const { return graph->edgeNum(); }
   164   
   147   
   165     Node addNode() const { return Node(graph->addNode()); }
   148     Node addNode() const { return Node(graph->addNode()); }
   269   protected:
   252   protected:
   270     RevGraphWrapper() { }
   253     RevGraphWrapper() { }
   271   public:
   254   public:
   272     RevGraphWrapper(_Graph& _graph) { setGraph(_graph); }
   255     RevGraphWrapper(_Graph& _graph) { setGraph(_graph); }
   273   };
   256   };
   274 //   template<typename Graph>
       
   275 //   class RevGraphWrapper : public GraphWrapper<Graph> {
       
   276 //   public:
       
   277 //     typedef GraphWrapper<Graph> Parent; 
       
   278 //   protected:
       
   279 //     RevGraphWrapper() : GraphWrapper<Graph>() { }
       
   280 //   public:
       
   281 //     RevGraphWrapper(Graph& _graph) : GraphWrapper<Graph>(_graph) { }  
       
   282 //     RevGraphWrapper(const RevGraphWrapper<Graph>& gw) : Parent(gw) { }
       
   283 
       
   284 //     typedef typename GraphWrapper<Graph>::Node Node;
       
   285 //     typedef typename GraphWrapper<Graph>::Edge Edge;
       
   286 //     //remark: OutEdgeIt and InEdgeIt cannot be typedef-ed to each other
       
   287 //     //because this does not work is some of them are not defined in the 
       
   288 //     //original graph. The problem with this is that typedef-ed stuff 
       
   289 //     //are instantiated in c++.
       
   290 //     class OutEdgeIt : public Edge { 
       
   291 //       const RevGraphWrapper<Graph>* gw;
       
   292 //       friend class GraphWrapper<Graph>;
       
   293 //      public:
       
   294 //       OutEdgeIt() { }
       
   295 //       OutEdgeIt(Invalid i) : Edge(i) { }
       
   296 //       OutEdgeIt(const RevGraphWrapper<Graph>& _gw, const Node& n) : 
       
   297 // 	Edge(typename Graph::InEdgeIt(*(_gw.graph), n)), gw(&_gw) { }
       
   298 //       OutEdgeIt(const RevGraphWrapper<Graph>& _gw, const Edge& e) : 
       
   299 // 	Edge(e), gw(&_gw) { }
       
   300 //       OutEdgeIt& operator++() { 
       
   301 // 	*(static_cast<Edge*>(this))=
       
   302 // 	  ++(typename Graph::InEdgeIt(*(gw->graph), *this));
       
   303 // 	return *this; 
       
   304 //       }
       
   305 //     };
       
   306 //     class InEdgeIt : public Edge { 
       
   307 //       const RevGraphWrapper<Graph>* gw;
       
   308 //       friend class GraphWrapper<Graph>;
       
   309 //      public:
       
   310 //       InEdgeIt() { }
       
   311 //       InEdgeIt(Invalid i) : Edge(i) { }
       
   312 //       InEdgeIt(const RevGraphWrapper<Graph>& _gw, const Node& n) : 
       
   313 // 	Edge(typename Graph::OutEdgeIt(*(_gw.graph), n)), gw(&_gw) { }
       
   314 //       InEdgeIt(const RevGraphWrapper<Graph>& _gw, const Edge& e) : 
       
   315 // 	Edge(e), gw(&_gw) { }
       
   316 //       InEdgeIt& operator++() { 
       
   317 // 	*(static_cast<Edge*>(this))=
       
   318 // 	  ++(typename Graph::OutEdgeIt(*(gw->graph), *this));
       
   319 // 	return *this; 
       
   320 //       }
       
   321 //     };
       
   322 
       
   323 //     using GraphWrapper<Graph>::first;
       
   324 //     OutEdgeIt& first(OutEdgeIt& i, const Node& p) const { 
       
   325 //       i=OutEdgeIt(*this, p); return i;
       
   326 //     }
       
   327 //     InEdgeIt& first(InEdgeIt& i, const Node& p) const { 
       
   328 //       i=InEdgeIt(*this, p); return i;
       
   329 //     }
       
   330 
       
   331 //     Node source(const Edge& e) const { 
       
   332 //       return GraphWrapper<Graph>::target(e); }
       
   333 //     Node target(const Edge& e) const { 
       
   334 //       return GraphWrapper<Graph>::source(e); }
       
   335 
       
   336 //     //    KEEP_MAPS(Parent, RevGraphWrapper);
       
   337 
       
   338 //   };
       
   339 
   257 
   340   
   258   
   341   template <typename _Graph, typename NodeFilterMap, typename EdgeFilterMap>
   259   template <typename _Graph, typename NodeFilterMap, typename EdgeFilterMap>
   342   class SubGraphWrapperBase : public GraphWrapperBase<_Graph> {
   260   class SubGraphWrapperBase : public GraphWrapperBase<_Graph> {
   343   public:
   261   public:
   514       setNodeFilterMap(_node_filter_map);
   432       setNodeFilterMap(_node_filter_map);
   515       setEdgeFilterMap(_edge_filter_map);
   433       setEdgeFilterMap(_edge_filter_map);
   516     }
   434     }
   517   };
   435   };
   518 
   436 
   519 //   template<typename Graph, typename NodeFilterMap, 
       
   520 // 	   typename EdgeFilterMap>
       
   521 //   class SubGraphWrapper : public GraphWrapper<Graph> {
       
   522 //   public:
       
   523 //     typedef GraphWrapper<Graph> Parent;
       
   524 //   protected:
       
   525 //     NodeFilterMap* node_filter_map;
       
   526 //     EdgeFilterMap* edge_filter_map;
       
   527 
       
   528 //     SubGraphWrapper() : GraphWrapper<Graph>(), 
       
   529 // 			node_filter_map(0), edge_filter_map(0) { }
       
   530 //     void setNodeFilterMap(NodeFilterMap& _node_filter_map) {
       
   531 //       node_filter_map=&_node_filter_map;
       
   532 //     }
       
   533 //     void setEdgeFilterMap(EdgeFilterMap& _edge_filter_map) {
       
   534 //       edge_filter_map=&_edge_filter_map;
       
   535 //     }
       
   536     
       
   537 //   public:
       
   538 //     SubGraphWrapper(Graph& _graph, NodeFilterMap& _node_filter_map, 
       
   539 // 		    EdgeFilterMap& _edge_filter_map) : 
       
   540 //       GraphWrapper<Graph>(_graph), node_filter_map(&_node_filter_map), 
       
   541 //       edge_filter_map(&_edge_filter_map) { }  
       
   542 
       
   543 //     typedef typename GraphWrapper<Graph>::Node Node;
       
   544 //     class NodeIt : public Node { 
       
   545 //       const SubGraphWrapper<Graph, NodeFilterMap, EdgeFilterMap>* gw;
       
   546 //       friend class SubGraphWrapper<Graph, NodeFilterMap, EdgeFilterMap>;
       
   547 //     public:
       
   548 //       NodeIt() { }
       
   549 //       NodeIt(Invalid i) : Node(i) { }
       
   550 //       NodeIt(const SubGraphWrapper<Graph, NodeFilterMap, EdgeFilterMap>& _gw) : 
       
   551 // 	Node(typename Graph::NodeIt(*(_gw.graph))), gw(&_gw) { 
       
   552 // 	while (*static_cast<Node*>(this)!=INVALID && 
       
   553 // 	       !(*(gw->node_filter_map))[*this]) 
       
   554 // 	  *(static_cast<Node*>(this))=
       
   555 // 	    ++(typename Graph::NodeIt(*(gw->graph), *this));
       
   556 //       }
       
   557 //       NodeIt(const SubGraphWrapper<Graph, NodeFilterMap, EdgeFilterMap>& _gw, 
       
   558 // 	     const Node& n) : 
       
   559 // 	Node(n), gw(&_gw) { }
       
   560 //       NodeIt& operator++() { 
       
   561 // 	*(static_cast<Node*>(this))=
       
   562 // 	  ++(typename Graph::NodeIt(*(gw->graph), *this));
       
   563 // 	while (*static_cast<Node*>(this)!=INVALID && 
       
   564 // 	       !(*(gw->node_filter_map))[*this]) 
       
   565 // 	  *(static_cast<Node*>(this))=
       
   566 // 	    ++(typename Graph::NodeIt(*(gw->graph), *this));
       
   567 // 	return *this; 
       
   568 //       }
       
   569 //     };
       
   570 //     typedef typename GraphWrapper<Graph>::Edge Edge;
       
   571 //     class OutEdgeIt : public Edge { 
       
   572 //       const SubGraphWrapper<Graph, NodeFilterMap, EdgeFilterMap>* gw;
       
   573 //       friend class SubGraphWrapper<Graph, NodeFilterMap, EdgeFilterMap>;
       
   574 //     public:
       
   575 //       OutEdgeIt() { }
       
   576 //       OutEdgeIt(Invalid i) : Edge(i) { }
       
   577 //       OutEdgeIt(const SubGraphWrapper<Graph, NodeFilterMap, EdgeFilterMap>& _gw, const Node& n) : 
       
   578 // 	Edge(typename Graph::OutEdgeIt(*(_gw.graph), n)), gw(&_gw) { 
       
   579 // 	while (*static_cast<Edge*>(this)!=INVALID && 
       
   580 // 	       !(*(gw->edge_filter_map))[*this]) 
       
   581 // 	  *(static_cast<Edge*>(this))=
       
   582 // 	    ++(typename Graph::OutEdgeIt(*(gw->graph), *this));
       
   583 //       }
       
   584 //       OutEdgeIt(const SubGraphWrapper<Graph, NodeFilterMap, EdgeFilterMap>& _gw, 
       
   585 // 	     const Edge& e) : 
       
   586 // 	Edge(e), gw(&_gw) { }
       
   587 //       OutEdgeIt& operator++() { 
       
   588 // 	*(static_cast<Edge*>(this))=
       
   589 // 	  ++(typename Graph::OutEdgeIt(*(gw->graph), *this));
       
   590 // 	while (*static_cast<Edge*>(this)!=INVALID && 
       
   591 // 	       !(*(gw->edge_filter_map))[*this]) 
       
   592 // 	  *(static_cast<Edge*>(this))=
       
   593 // 	    ++(typename Graph::OutEdgeIt(*(gw->graph), *this));
       
   594 // 	return *this; 
       
   595 //       }
       
   596 //     };
       
   597 //     class InEdgeIt : public Edge { 
       
   598 //       const SubGraphWrapper<Graph, NodeFilterMap, EdgeFilterMap>* gw;
       
   599 //       friend class SubGraphWrapper<Graph, NodeFilterMap, EdgeFilterMap>;
       
   600 //     public:
       
   601 //       InEdgeIt() { }
       
   602 //       //      InEdgeIt(const InEdgeIt& e) : Edge(e), gw(e.gw) { }
       
   603 //       InEdgeIt(Invalid i) : Edge(i) { }
       
   604 //       InEdgeIt(const SubGraphWrapper<Graph, NodeFilterMap, EdgeFilterMap>& _gw, const Node& n) : 
       
   605 // 	Edge(typename Graph::InEdgeIt(*(_gw.graph), n)), gw(&_gw) { 
       
   606 // 	while (*static_cast<Edge*>(this)!=INVALID && 
       
   607 // 	       !(*(gw->edge_filter_map))[*this]) 
       
   608 // 	  *(static_cast<Edge*>(this))=
       
   609 // 	    ++(typename Graph::InEdgeIt(*(gw->graph), *this));
       
   610 //       }
       
   611 //       InEdgeIt(const SubGraphWrapper<Graph, NodeFilterMap, EdgeFilterMap>& _gw, 
       
   612 // 	     const Edge& e) : 
       
   613 // 	Edge(e), gw(&_gw) { }
       
   614 //       InEdgeIt& operator++() { 
       
   615 // 	*(static_cast<Edge*>(this))=
       
   616 // 	  ++(typename Graph::InEdgeIt(*(gw->graph), *this));
       
   617 // 	while (*static_cast<Edge*>(this)!=INVALID && 
       
   618 // 	       !(*(gw->edge_filter_map))[*this]) 
       
   619 // 	  *(static_cast<Edge*>(this))=
       
   620 // 	    ++(typename Graph::InEdgeIt(*(gw->graph), *this));
       
   621 // 	return *this; 
       
   622 //       }
       
   623 //     };
       
   624 //     class EdgeIt : public Edge { 
       
   625 //       const SubGraphWrapper<Graph, NodeFilterMap, EdgeFilterMap>* gw;
       
   626 //       friend class SubGraphWrapper<Graph, NodeFilterMap, EdgeFilterMap>;
       
   627 //     public:
       
   628 //       EdgeIt() { }
       
   629 //       EdgeIt(Invalid i) : Edge(i) { }
       
   630 //       EdgeIt(const SubGraphWrapper<Graph, NodeFilterMap, EdgeFilterMap>& _gw) : 
       
   631 // 	Edge(typename Graph::EdgeIt(*(_gw.graph))), gw(&_gw) { 
       
   632 // 	while (*static_cast<Edge*>(this)!=INVALID && 
       
   633 // 	       !(*(gw->edge_filter_map))[*this]) 
       
   634 // 	  *(static_cast<Edge*>(this))=
       
   635 // 	    ++(typename Graph::EdgeIt(*(gw->graph), *this));
       
   636 //       }
       
   637 //       EdgeIt(const SubGraphWrapper<Graph, NodeFilterMap, EdgeFilterMap>& _gw, 
       
   638 // 	     const Edge& e) : 
       
   639 // 	Edge(e), gw(&_gw) { }
       
   640 //       EdgeIt& operator++() { 
       
   641 // 	*(static_cast<Edge*>(this))=
       
   642 // 	  ++(typename Graph::EdgeIt(*(gw->graph), *this));
       
   643 // 	while (*static_cast<Edge*>(this)!=INVALID && 
       
   644 // 	       !(*(gw->edge_filter_map))[*this]) 
       
   645 // 	  *(static_cast<Edge*>(this))=
       
   646 // 	    ++(typename Graph::EdgeIt(*(gw->graph), *this));
       
   647 // 	return *this; 
       
   648 //       }
       
   649 //     };
       
   650 
       
   651 //     NodeIt& first(NodeIt& i) const { 
       
   652 //       i=NodeIt(*this); return i;
       
   653 //     }
       
   654 //     OutEdgeIt& first(OutEdgeIt& i, const Node& p) const { 
       
   655 //       i=OutEdgeIt(*this, p); return i;
       
   656 //     }
       
   657 //     InEdgeIt& first(InEdgeIt& i, const Node& p) const { 
       
   658 //       i=InEdgeIt(*this, p); return i;
       
   659 //     }
       
   660 //     EdgeIt& first(EdgeIt& i) const { 
       
   661 //       i=EdgeIt(*this); return i;
       
   662 //     }
       
   663     
       
   664 //     /// This function hides \c n in the graph, i.e. the iteration 
       
   665 //     /// jumps over it. This is done by simply setting the value of \c n  
       
   666 //     /// to be false in the corresponding node-map.
       
   667 //     void hide(const Node& n) const { node_filter_map->set(n, false); }
       
   668 
       
   669 //     /// This function hides \c e in the graph, i.e. the iteration 
       
   670 //     /// jumps over it. This is done by simply setting the value of \c e  
       
   671 //     /// to be false in the corresponding edge-map.
       
   672 //     void hide(const Edge& e) const { edge_filter_map->set(e, false); }
       
   673 
       
   674 //     /// The value of \c n is set to be true in the node-map which stores 
       
   675 //     /// hide information. If \c n was hidden previuosly, then it is shown 
       
   676 //     /// again
       
   677 //      void unHide(const Node& n) const { node_filter_map->set(n, true); }
       
   678 
       
   679 //     /// The value of \c e is set to be true in the edge-map which stores 
       
   680 //     /// hide information. If \c e was hidden previuosly, then it is shown 
       
   681 //     /// again
       
   682 //     void unHide(const Edge& e) const { edge_filter_map->set(e, true); }
       
   683 
       
   684 //     /// Returns true if \c n is hidden.
       
   685 //     bool hidden(const Node& n) const { return !(*node_filter_map)[n]; }
       
   686 
       
   687 //     /// Returns true if \c n is hidden.
       
   688 //     bool hidden(const Edge& e) const { return !(*edge_filter_map)[e]; }
       
   689 
       
   690 //     /// \warning This is a linear time operation and works only if 
       
   691 //     /// \c Graph::NodeIt is defined.
       
   692 //     int nodeNum() const { 
       
   693 //       int i=0;
       
   694 //       for (NodeIt n(*this); n!=INVALID; ++n) ++i;
       
   695 //       return i; 
       
   696 //     }
       
   697 
       
   698 //     /// \warning This is a linear time operation and works only if 
       
   699 //     /// \c Graph::EdgeIt is defined.
       
   700 //     int edgeNum() const { 
       
   701 //       int i=0;
       
   702 //       for (EdgeIt e(*this); e!=INVALID; ++e) ++i;
       
   703 //       return i; 
       
   704 //     }
       
   705 
       
   706 //     //    KEEP_MAPS(Parent, SubGraphWrapper);
       
   707 //   };
       
   708 
   437 
   709 
   438 
   710   /*! \brief A wrapper for hiding nodes from a graph.
   439   /*! \brief A wrapper for hiding nodes from a graph.
   711 
   440 
   712   \warning Graph wrappers are in even more experimental state than the other
   441   \warning Graph wrappers are in even more experimental state than the other
  1264       setForwardFilterMap(_forward_filter);
   993       setForwardFilterMap(_forward_filter);
  1265       setBackwardFilterMap(_backward_filter);
   994       setBackwardFilterMap(_backward_filter);
  1266     }
   995     }
  1267   };
   996   };
  1268 
   997 
  1269 //   template<typename Graph, 
       
  1270 // 	   typename ForwardFilterMap, typename BackwardFilterMap>
       
  1271 //   class SubBidirGraphWrapper : public GraphWrapper<Graph> {
       
  1272 //   public:
       
  1273 //     typedef GraphWrapper<Graph> Parent; 
       
  1274 //   protected:
       
  1275 //     ForwardFilterMap* forward_filter;
       
  1276 //     BackwardFilterMap* backward_filter;
       
  1277 
       
  1278 //     SubBidirGraphWrapper() : GraphWrapper<Graph>() { }
       
  1279 //     void setForwardFilterMap(ForwardFilterMap& _forward_filter) {
       
  1280 //       forward_filter=&_forward_filter;
       
  1281 //     }
       
  1282 //     void setBackwardFilterMap(BackwardFilterMap& _backward_filter) {
       
  1283 //       backward_filter=&_backward_filter;
       
  1284 //     }
       
  1285 
       
  1286 //   public:
       
  1287 
       
  1288 //     SubBidirGraphWrapper(Graph& _graph, ForwardFilterMap& _forward_filter, 
       
  1289 // 			 BackwardFilterMap& _backward_filter) : 
       
  1290 //       GraphWrapper<Graph>(_graph), 
       
  1291 //       forward_filter(&_forward_filter), backward_filter(&_backward_filter) { }
       
  1292 //     SubBidirGraphWrapper(const SubBidirGraphWrapper<Graph, 
       
  1293 // 			 ForwardFilterMap, BackwardFilterMap>& gw) : 
       
  1294 //       Parent(gw), 
       
  1295 //       forward_filter(gw.forward_filter), 
       
  1296 //       backward_filter(gw.backward_filter) { }
       
  1297 
       
  1298 //     class Edge; 
       
  1299 //     class OutEdgeIt; 
       
  1300 //     friend class Edge; 
       
  1301 //     friend class OutEdgeIt; 
       
  1302 
       
  1303 //     template<typename T> class EdgeMap;
       
  1304 
       
  1305 //     typedef typename GraphWrapper<Graph>::Node Node;
       
  1306 
       
  1307 //     typedef typename Graph::Edge GraphEdge;
       
  1308 //     /// SubBidirGraphWrapper<..., ..., ...>::Edge is inherited from 
       
  1309 //     /// Graph::Edge. It contains an extra bool flag which is true 
       
  1310 //     /// if and only if the 
       
  1311 //     /// edge is the backward version of the original edge.
       
  1312 //     class Edge : public Graph::Edge {
       
  1313 //       friend class SubBidirGraphWrapper<Graph, 
       
  1314 // 					ForwardFilterMap, BackwardFilterMap>;
       
  1315 //       template<typename T> friend class EdgeMap;
       
  1316 //     protected:
       
  1317 //       bool backward; //true, iff backward
       
  1318 //     public:
       
  1319 //       Edge() { }
       
  1320 //       /// \todo =false is needed, or causes problems?
       
  1321 //       /// If \c _backward is false, then we get an edge corresponding to the 
       
  1322 //       /// original one, otherwise its oppositely directed pair is obtained.
       
  1323 //       Edge(const typename Graph::Edge& e, bool _backward/*=false*/) : 
       
  1324 // 	Graph::Edge(e), backward(_backward) { }
       
  1325 //       Edge(Invalid i) : Graph::Edge(i), backward(true) { }
       
  1326 //       bool operator==(const Edge& v) const { 
       
  1327 // 	return (this->backward==v.backward && 
       
  1328 // 		static_cast<typename Graph::Edge>(*this)==
       
  1329 // 		static_cast<typename Graph::Edge>(v));
       
  1330 //       } 
       
  1331 //       bool operator!=(const Edge& v) const { 
       
  1332 // 	return (this->backward!=v.backward || 
       
  1333 // 		static_cast<typename Graph::Edge>(*this)!=
       
  1334 // 		static_cast<typename Graph::Edge>(v));
       
  1335 //       }
       
  1336 //     };
       
  1337 
       
  1338 //     class OutEdgeIt : public Edge {
       
  1339 //       friend class SubBidirGraphWrapper<Graph, 
       
  1340 // 					ForwardFilterMap, BackwardFilterMap>;
       
  1341 //     protected:
       
  1342 //       const SubBidirGraphWrapper<Graph, 
       
  1343 // 				 ForwardFilterMap, BackwardFilterMap>* gw;
       
  1344 //     public:
       
  1345 //       OutEdgeIt() { }
       
  1346 //       OutEdgeIt(Invalid i) : Edge(i) { }
       
  1347 //       OutEdgeIt(const SubBidirGraphWrapper<Graph, 
       
  1348 // 		ForwardFilterMap, BackwardFilterMap>& _gw, const Node& n) : 
       
  1349 // 	Edge(typename Graph::OutEdgeIt(*(_gw.graph), n), false), gw(&_gw) { 
       
  1350 // 	while (*static_cast<GraphEdge*>(this)!=INVALID && 
       
  1351 // 	       !(*(gw->forward_filter))[*this]) 
       
  1352 // 	  *(static_cast<GraphEdge*>(this))=
       
  1353 // 	    ++(typename Graph::OutEdgeIt(*(gw->graph), *this));
       
  1354 // 	if (*static_cast<GraphEdge*>(this)==INVALID) {
       
  1355 // 	  *static_cast<Edge*>(this)=
       
  1356 // 	    Edge(typename Graph::InEdgeIt(*(_gw.graph), n), true);
       
  1357 // 	  while (*static_cast<GraphEdge*>(this)!=INVALID && 
       
  1358 // 		 !(*(gw->backward_filter))[*this]) 
       
  1359 // 	    *(static_cast<GraphEdge*>(this))=
       
  1360 // 	      ++(typename Graph::InEdgeIt(*(gw->graph), *this));
       
  1361 // 	}
       
  1362 //       }
       
  1363 //       OutEdgeIt(const SubBidirGraphWrapper<Graph, 
       
  1364 // 		ForwardFilterMap, BackwardFilterMap>& _gw, const Edge& e) : 
       
  1365 // 	Edge(e), gw(&_gw) { }
       
  1366 //       OutEdgeIt& operator++() { 
       
  1367 // 	if (!this->backward) {
       
  1368 // 	  Node n=gw->source(*this);
       
  1369 // 	  *(static_cast<GraphEdge*>(this))=
       
  1370 // 	    ++(typename Graph::OutEdgeIt(*(gw->graph), *this));
       
  1371 // 	  while (*static_cast<GraphEdge*>(this)!=INVALID && 
       
  1372 // 		 !(*(gw->forward_filter))[*this]) 
       
  1373 // 	    *(static_cast<GraphEdge*>(this))=
       
  1374 // 	      ++(typename Graph::OutEdgeIt(*(gw->graph), *this));
       
  1375 // 	  if (*static_cast<GraphEdge*>(this)==INVALID) {
       
  1376 // 	    *static_cast<Edge*>(this)=
       
  1377 // 	      Edge(typename Graph::InEdgeIt(*(gw->graph), n), true);
       
  1378 // 	    while (*static_cast<GraphEdge*>(this)!=INVALID && 
       
  1379 // 		   !(*(gw->backward_filter))[*this]) 
       
  1380 // 	      *(static_cast<GraphEdge*>(this))=
       
  1381 // 		++(typename Graph::InEdgeIt(*(gw->graph), *this));
       
  1382 // 	  }
       
  1383 // 	} else {
       
  1384 // 	  *(static_cast<GraphEdge*>(this))=
       
  1385 // 	    ++(typename Graph::InEdgeIt(*(gw->graph), *this));
       
  1386 // 	  while (*static_cast<GraphEdge*>(this)!=INVALID && 
       
  1387 // 		 !(*(gw->backward_filter))[*this]) 
       
  1388 // 	    *(static_cast<GraphEdge*>(this))=
       
  1389 // 	      ++(typename Graph::InEdgeIt(*(gw->graph), *this));
       
  1390 // 	}
       
  1391 // 	return *this;
       
  1392 //       }
       
  1393 //     };
       
  1394 
       
  1395 //     class InEdgeIt : public Edge {
       
  1396 //       friend class SubBidirGraphWrapper<Graph, 
       
  1397 // 					ForwardFilterMap, BackwardFilterMap>;
       
  1398 //     protected:
       
  1399 //       const SubBidirGraphWrapper<Graph, 
       
  1400 // 				 ForwardFilterMap, BackwardFilterMap>* gw;
       
  1401 //     public:
       
  1402 //       InEdgeIt() { }
       
  1403 //       InEdgeIt(Invalid i) : Edge(i) { }
       
  1404 //       InEdgeIt(const SubBidirGraphWrapper<Graph, 
       
  1405 // 	       ForwardFilterMap, BackwardFilterMap>& _gw, const Node& n) : 
       
  1406 // 	Edge(typename Graph::InEdgeIt(*(_gw.graph), n), false), gw(&_gw) { 
       
  1407 // 	while (*static_cast<GraphEdge*>(this)!=INVALID && 
       
  1408 // 	       !(*(gw->forward_filter))[*this]) 
       
  1409 // 	  *(static_cast<GraphEdge*>(this))=
       
  1410 // 	    ++(typename Graph::InEdgeIt(*(gw->graph), *this));
       
  1411 // 	if (*static_cast<GraphEdge*>(this)==INVALID) {
       
  1412 // 	  *static_cast<Edge*>(this)=
       
  1413 // 	    Edge(typename Graph::OutEdgeIt(*(_gw.graph), n), true);
       
  1414 // 	  while (*static_cast<GraphEdge*>(this)!=INVALID && 
       
  1415 // 		 !(*(gw->backward_filter))[*this]) 
       
  1416 // 	    *(static_cast<GraphEdge*>(this))=
       
  1417 // 	      ++(typename Graph::OutEdgeIt(*(gw->graph), *this));
       
  1418 // 	}
       
  1419 //       }
       
  1420 //       InEdgeIt(const SubBidirGraphWrapper<Graph, 
       
  1421 // 	       ForwardFilterMap, BackwardFilterMap>& _gw, const Edge& e) : 
       
  1422 // 	Edge(e), gw(&_gw) { }
       
  1423 //       InEdgeIt& operator++() { 
       
  1424 // 	if (!this->backward) {
       
  1425 // 	  Node n=gw->source(*this);
       
  1426 // 	  *(static_cast<GraphEdge*>(this))=
       
  1427 // 	    ++(typename Graph::InEdgeIt(*(gw->graph), *this));
       
  1428 // 	  while (*static_cast<GraphEdge*>(this)!=INVALID && 
       
  1429 // 		 !(*(gw->forward_filter))[*this]) 
       
  1430 // 	    *(static_cast<GraphEdge*>(this))=
       
  1431 // 	      ++(typename Graph::InEdgeIt(*(gw->graph), *this));
       
  1432 // 	  if (*static_cast<GraphEdge*>(this)==INVALID) {
       
  1433 // 	    *static_cast<Edge*>(this)=
       
  1434 // 	      Edge(typename Graph::OutEdgeIt(*(gw->graph), n), true);
       
  1435 // 	    while (*static_cast<GraphEdge*>(this)!=INVALID && 
       
  1436 // 		   !(*(gw->backward_filter))[*this]) 
       
  1437 // 	      *(static_cast<GraphEdge*>(this))=
       
  1438 // 		++(typename Graph::OutEdgeIt(*(gw->graph), *this));
       
  1439 // 	  }
       
  1440 // 	} else {
       
  1441 // 	  *(static_cast<GraphEdge*>(this))=
       
  1442 // 	    ++(typename Graph::OutEdgeIt(*(gw->graph), *this));
       
  1443 // 	  while (*static_cast<GraphEdge*>(this)!=INVALID && 
       
  1444 // 		 !(*(gw->backward_filter))[*this]) 
       
  1445 // 	    *(static_cast<GraphEdge*>(this))=
       
  1446 // 	      ++(typename Graph::OutEdgeIt(*(gw->graph), *this));
       
  1447 // 	}
       
  1448 // 	return *this;
       
  1449 //       }
       
  1450 //     };
       
  1451 
       
  1452 //     class EdgeIt : public Edge {
       
  1453 //       friend class SubBidirGraphWrapper<Graph, 
       
  1454 // 					ForwardFilterMap, BackwardFilterMap>;
       
  1455 //     protected:
       
  1456 //       const SubBidirGraphWrapper<Graph, 
       
  1457 // 				 ForwardFilterMap, BackwardFilterMap>* gw;
       
  1458 //     public:
       
  1459 //       EdgeIt() { }
       
  1460 //       EdgeIt(Invalid i) : Edge(i) { }
       
  1461 //       EdgeIt(const SubBidirGraphWrapper<Graph, 
       
  1462 // 	     ForwardFilterMap, BackwardFilterMap>& _gw) : 
       
  1463 // 	Edge(typename Graph::EdgeIt(*(_gw.graph)), false), gw(&_gw) { 
       
  1464 // 	while (*static_cast<GraphEdge*>(this)!=INVALID && 
       
  1465 // 	       !(*(gw->forward_filter))[*this]) 
       
  1466 // 	  *(static_cast<GraphEdge*>(this))=
       
  1467 // 	    ++(typename Graph::EdgeIt(*(gw->graph), *this));
       
  1468 // 	if (*static_cast<GraphEdge*>(this)==INVALID) {
       
  1469 // 	  *static_cast<Edge*>(this)=
       
  1470 // 	    Edge(typename Graph::EdgeIt(*(_gw.graph)), true);
       
  1471 // 	  while (*static_cast<GraphEdge*>(this)!=INVALID && 
       
  1472 // 		 !(*(gw->backward_filter))[*this]) 
       
  1473 // 	    *(static_cast<GraphEdge*>(this))=
       
  1474 // 	      ++(typename Graph::EdgeIt(*(gw->graph), *this));
       
  1475 // 	}
       
  1476 //       }
       
  1477 //       EdgeIt(const SubBidirGraphWrapper<Graph, 
       
  1478 // 	     ForwardFilterMap, BackwardFilterMap>& _gw, const Edge& e) : 
       
  1479 // 	Edge(e), gw(&_gw) { }
       
  1480 //       EdgeIt& operator++() { 
       
  1481 // 	if (!this->backward) {
       
  1482 // 	  *(static_cast<GraphEdge*>(this))=
       
  1483 // 	    ++(typename Graph::EdgeIt(*(gw->graph), *this));
       
  1484 // 	  while (*static_cast<GraphEdge*>(this)!=INVALID && 
       
  1485 // 		 !(*(gw->forward_filter))[*this]) 
       
  1486 // 	    *(static_cast<GraphEdge*>(this))=
       
  1487 // 	      ++(typename Graph::EdgeIt(*(gw->graph), *this));
       
  1488 // 	  if (*static_cast<GraphEdge*>(this)==INVALID) {
       
  1489 // 	    *static_cast<Edge*>(this)=
       
  1490 // 	      Edge(typename Graph::EdgeIt(*(gw->graph)), true);
       
  1491 // 	    while (*static_cast<GraphEdge*>(this)!=INVALID && 
       
  1492 // 		   !(*(gw->backward_filter))[*this]) 
       
  1493 // 	      *(static_cast<GraphEdge*>(this))=
       
  1494 // 		++(typename Graph::EdgeIt(*(gw->graph), *this));
       
  1495 // 	  }
       
  1496 // 	} else {
       
  1497 // 	  *(static_cast<GraphEdge*>(this))=
       
  1498 // 	    ++(typename Graph::EdgeIt(*(gw->graph), *this));
       
  1499 // 	  while (*static_cast<GraphEdge*>(this)!=INVALID && 
       
  1500 // 		 !(*(gw->backward_filter))[*this]) 
       
  1501 // 	    *(static_cast<GraphEdge*>(this))=
       
  1502 // 	      ++(typename Graph::EdgeIt(*(gw->graph), *this));
       
  1503 // 	}
       
  1504 // 	return *this;
       
  1505 //       }
       
  1506 //     };
       
  1507 
       
  1508 // //     using GraphWrapper<Graph>::first;
       
  1509 // //     OutEdgeIt& first(OutEdgeIt& i, const Node& p) const { 
       
  1510 // //       i=OutEdgeIt(*this, p); return i;
       
  1511 // //     }
       
  1512 // //     InEdgeIt& first(InEdgeIt& i, const Node& p) const { 
       
  1513 // //       i=InEdgeIt(*this, p); return i;
       
  1514 // //     }
       
  1515 // //     EdgeIt& first(EdgeIt& i) const { 
       
  1516 // //       i=EdgeIt(*this); return i;
       
  1517 // //     }
       
  1518   
       
  1519 
       
  1520 //     Node source(Edge e) const { 
       
  1521 //       return ((!e.backward) ? this->graph->source(e) : this->graph->target(e)); }
       
  1522 //     Node target(Edge e) const { 
       
  1523 //       return ((!e.backward) ? this->graph->target(e) : this->graph->source(e)); }
       
  1524 
       
  1525 //     /// Gives back the opposite edge.
       
  1526 //     Edge opposite(const Edge& e) const { 
       
  1527 //       Edge f=e;
       
  1528 //       f.backward=!f.backward;
       
  1529 //       return f;
       
  1530 //     }
       
  1531 
       
  1532 //     /// \warning This is a linear time operation and works only if 
       
  1533 //     /// \c Graph::EdgeIt is defined.
       
  1534 //     int edgeNum() const { 
       
  1535 //       int i=0;
       
  1536 //       for (EdgeIt e(*this); e!=INVALID; ++e) ++i;
       
  1537 //       return i; 
       
  1538 //     }
       
  1539 
       
  1540 //     bool forward(const Edge& e) const { return !e.backward; }
       
  1541 //     bool backward(const Edge& e) const { return e.backward; }
       
  1542 
       
  1543 
       
  1544 //     template <typename T>
       
  1545 //     /// \c SubBidirGraphWrapper<..., ..., ...>::EdgeMap contains two 
       
  1546 //     /// Graph::EdgeMap one for the forward edges and 
       
  1547 //     /// one for the backward edges.
       
  1548 //     class EdgeMap {
       
  1549 //       template <typename TT> friend class EdgeMap;
       
  1550 //       typename Graph::template EdgeMap<T> forward_map, backward_map; 
       
  1551 //     public:
       
  1552 //       typedef T Value;
       
  1553 //       typedef Edge Key;
       
  1554 
       
  1555 //       EdgeMap(const SubBidirGraphWrapper<Graph, 
       
  1556 // 	      ForwardFilterMap, BackwardFilterMap>& g) : 
       
  1557 // 	forward_map(*(g.graph)), backward_map(*(g.graph)) { }
       
  1558 
       
  1559 //       EdgeMap(const SubBidirGraphWrapper<Graph, 
       
  1560 // 	      ForwardFilterMap, BackwardFilterMap>& g, T a) : 
       
  1561 // 	forward_map(*(g.graph), a), backward_map(*(g.graph), a) { }
       
  1562 
       
  1563 //       template <typename TT>
       
  1564 //       EdgeMap(const EdgeMap<TT>& copy) 
       
  1565 // 	: forward_map(copy.forward_map), backward_map(copy.backward_map) {}
       
  1566 
       
  1567 //       template <typename TT>
       
  1568 //       EdgeMap& operator=(const EdgeMap<TT>& copy) {
       
  1569 // 	forward_map = copy.forward_map;
       
  1570 // 	backward_map = copy.backward_map;
       
  1571 // 	return *this;
       
  1572 //       }
       
  1573       
       
  1574 //       void set(Edge e, T a) { 
       
  1575 // 	if (!e.backward) 
       
  1576 // 	  forward_map.set(e, a); 
       
  1577 // 	else 
       
  1578 // 	  backward_map.set(e, a); 
       
  1579 //       }
       
  1580 
       
  1581 //       typename Graph::template EdgeMap<T>::ConstReference 
       
  1582 //       operator[](Edge e) const { 
       
  1583 // 	if (!e.backward) 
       
  1584 // 	  return forward_map[e]; 
       
  1585 // 	else 
       
  1586 // 	  return backward_map[e]; 
       
  1587 //       }
       
  1588 
       
  1589 //       typename Graph::template EdgeMap<T>::Reference 
       
  1590 //       operator[](Edge e) { 
       
  1591 // 	if (!e.backward) 
       
  1592 // 	  return forward_map[e]; 
       
  1593 // 	else 
       
  1594 // 	  return backward_map[e]; 
       
  1595 //       }
       
  1596 
       
  1597 //       void update() { 
       
  1598 // 	forward_map.update(); 
       
  1599 // 	backward_map.update();
       
  1600 //       }
       
  1601 //     };
       
  1602 
       
  1603 
       
  1604 //     //    KEEP_NODE_MAP(Parent, SubBidirGraphWrapper);
       
  1605 
       
  1606 //   };
       
  1607 
   998 
  1608 
   999 
  1609   ///\brief A wrapper for composing bidirected graph from a directed one. 
  1000   ///\brief A wrapper for composing bidirected graph from a directed one. 
  1610   ///
  1001   ///
  1611   ///\warning Graph wrappers are in even more experimental state than the other
  1002   ///\warning Graph wrappers are in even more experimental state than the other
  1807   public:
  1198   public:
  1808 
  1199 
  1809     typedef typename Parent::Node Node;
  1200     typedef typename Parent::Node Node;
  1810     typedef typename Parent::Edge Edge;
  1201     typedef typename Parent::Edge Edge;
  1811 
  1202 
  1812 //     using Parent::first;
       
  1813 //     void first(Node& i) const { 
       
  1814 //       Parent::first(i); 
       
  1815 //       while (i!=INVALID && !(*node_filter_map)[i]) Parent::next(i); 
       
  1816 //     }
       
  1817 //     void first(Edge& i) const { 
       
  1818 //       Parent::first(i); 
       
  1819 //       while (i!=INVALID && !(*edge_filter_map)[i]) Parent::next(i); 
       
  1820 //     }
       
  1821 //     void firstIn(Edge& i, const Node& n) const { 
       
  1822 //       Parent::firstIn(i, n); 
       
  1823 //       while (i!=INVALID && !(*edge_filter_map)[i]) Parent::nextIn(i); 
       
  1824 //     }
       
  1825     void firstOut(Edge& i, const Node& n) const { 
  1203     void firstOut(Edge& i, const Node& n) const { 
  1826       i=(*first_out_edges)[n];
  1204       i=(*first_out_edges)[n];
  1827     }
  1205     }
  1828 
  1206 
  1829     void erase(const Edge& e) const {
  1207     void erase(const Edge& e) const {
  1830       Node n=source(e);
  1208       Node n=source(e);
  1831       Edge f=e;
  1209       Edge f=e;
  1832       Parent::nextOut(f);
  1210       Parent::nextOut(f);
  1833       first_out_edges->set(n, f);
  1211       first_out_edges->set(n, f);
  1834     }    
  1212     }    
  1835 //     void next(Node& i) const { 
       
  1836 //       Parent::next(i); 
       
  1837 //       while (i!=INVALID && !(*node_filter_map)[i]) Parent::next(i); 
       
  1838 //     }
       
  1839 //     void next(Edge& i) const { 
       
  1840 //       Parent::next(i); 
       
  1841 //       while (i!=INVALID && !(*edge_filter_map)[i]) Parent::next(i); 
       
  1842 //     }
       
  1843 //     void nextIn(Edge& i) const { 
       
  1844 //       Parent::nextIn(i); 
       
  1845 //       while (i!=INVALID && !(*edge_filter_map)[i]) Parent::nextIn(i); 
       
  1846 //     }
       
  1847 //     void nextOut(Edge& i) const { 
       
  1848 //       Parent::nextOut(i); 
       
  1849 //       while (i!=INVALID && !(*edge_filter_map)[i]) Parent::nextOut(i); 
       
  1850 //     }
       
  1851   };
  1213   };
  1852 
  1214 
  1853 
  1215 
  1854   /// For blocking flows.
  1216   /// For blocking flows.
  1855 
  1217 
  1876     ErasingFirstGraphWrapper(Graph& _graph, 
  1238     ErasingFirstGraphWrapper(Graph& _graph, 
  1877 			     FirstOutEdgesMap& _first_out_edges) { 
  1239 			     FirstOutEdgesMap& _first_out_edges) { 
  1878       setGraph(_graph);
  1240       setGraph(_graph);
  1879       setFirstOutEdgesMap(_first_out_edges);
  1241       setFirstOutEdgesMap(_first_out_edges);
  1880     } 
  1242     } 
  1881 //     using GraphWrapper<Graph>::first;
  1243 
  1882 //     OutEdgeIt& first(OutEdgeIt& i, const Node& p) const { 
  1244   };
  1883 //       i=OutEdgeIt(*this, p); return i;
       
  1884 //     }
       
  1885   };
       
  1886 //   template<typename Graph, typename FirstOutEdgesMap>
       
  1887 //   class ErasingFirstGraphWrapper : public GraphWrapper<Graph> {
       
  1888 //   public:
       
  1889 //     typedef GraphWrapper<Graph> Parent; 
       
  1890 //   protected:
       
  1891 //     FirstOutEdgesMap* first_out_edges;
       
  1892 //   public:
       
  1893 //     ErasingFirstGraphWrapper(Graph& _graph, 
       
  1894 // 			     FirstOutEdgesMap& _first_out_edges) : 
       
  1895 //       GraphWrapper<Graph>(_graph), first_out_edges(&_first_out_edges) { }  
       
  1896 
       
  1897 //     typedef typename GraphWrapper<Graph>::Node Node;
       
  1898 //     typedef typename GraphWrapper<Graph>::Edge Edge;
       
  1899 //     class OutEdgeIt : public Edge { 
       
  1900 //       friend class GraphWrapper<Graph>;
       
  1901 //       friend class ErasingFirstGraphWrapper<Graph, FirstOutEdgesMap>;
       
  1902 //       const ErasingFirstGraphWrapper<Graph, FirstOutEdgesMap>* gw;
       
  1903 //     public:
       
  1904 //       OutEdgeIt() { }
       
  1905 //       OutEdgeIt(Invalid i) : Edge(i) { }
       
  1906 //       OutEdgeIt(const ErasingFirstGraphWrapper<Graph, FirstOutEdgesMap>& _gw, 
       
  1907 // 		const Node& n) : 
       
  1908 // 	Edge((*(_gw.first_out_edges))[n]), gw(&_gw) { }
       
  1909 //       OutEdgeIt(const ErasingFirstGraphWrapper<Graph, FirstOutEdgesMap>& _gw, 
       
  1910 // 		const Edge& e) : 
       
  1911 // 	Edge(e), gw(&_gw) { }
       
  1912 //       OutEdgeIt& operator++() { 
       
  1913 // 	*(static_cast<Edge*>(this))=
       
  1914 // 	  ++(typename Graph::OutEdgeIt(*(gw->graph), *this));
       
  1915 // 	return *this; 
       
  1916 //       }
       
  1917 //     };
       
  1918 
       
  1919 // //     using GraphWrapper<Graph>::first;
       
  1920 // //     OutEdgeIt& first(OutEdgeIt& i, const Node& p) const { 
       
  1921 // //       i=OutEdgeIt(*this, p); return i;
       
  1922 // //     }
       
  1923 //     void erase(const Edge& e) const {
       
  1924 //       Node n=source(e);
       
  1925 //       typename Graph::OutEdgeIt f(*Parent::graph, n);
       
  1926 //       ++f;
       
  1927 //       first_out_edges->set(n, f);
       
  1928 //     }
       
  1929 
       
  1930 //     //    KEEP_MAPS(Parent, ErasingFirstGraphWrapper);
       
  1931 //   };
       
  1932 
  1245 
  1933   ///@}
  1246   ///@}
  1934 
  1247 
  1935 } //namespace lemon
  1248 } //namespace lemon
  1936 
  1249