lemon/graph_adaptor.h
changeset 1713 49d22d34d95f
parent 1685 5b37a10234bc
child 1725 22752dd6c693
equal deleted inserted replaced
9:d23201207332 10:1dddb9c59143
    63   */
    63   */
    64   template<typename _Graph>
    64   template<typename _Graph>
    65   class GraphAdaptorBase {
    65   class GraphAdaptorBase {
    66   public:
    66   public:
    67     typedef _Graph Graph;
    67     typedef _Graph Graph;
    68     /// \todo Is it needed?
       
    69     typedef Graph BaseGraph;
       
    70     typedef Graph ParentGraph;
    68     typedef Graph ParentGraph;
    71 
    69 
    72   protected:
    70   protected:
    73     Graph* graph;
    71     Graph* graph;
    74     GraphAdaptorBase() : graph(0) { }
    72     GraphAdaptorBase() : graph(0) { }
    91     void nextOut(Edge& i) const { graph->nextOut(i); }
    89     void nextOut(Edge& i) const { graph->nextOut(i); }
    92 
    90 
    93     Node source(const Edge& e) const { return graph->source(e); }
    91     Node source(const Edge& e) const { return graph->source(e); }
    94     Node target(const Edge& e) const { return graph->target(e); }
    92     Node target(const Edge& e) const { return graph->target(e); }
    95 
    93 
       
    94     typedef NodeNumTagIndicator<Graph> NodeNumTag;
    96     int nodeNum() const { return graph->nodeNum(); }
    95     int nodeNum() const { return graph->nodeNum(); }
       
    96     
       
    97     typedef EdgeNumTagIndicator<Graph> EdgeNumTag;
    97     int edgeNum() const { return graph->edgeNum(); }
    98     int edgeNum() const { return graph->edgeNum(); }
       
    99 
       
   100     typedef FindEdgeTagIndicator<Graph> FindEdgeTag;
       
   101     Edge findEdge(const Node& source, const Node& target, 
       
   102 		  const Edge& prev = INVALID) {
       
   103       return graph->findEdge(source, target, prev);
       
   104     }
    98   
   105   
    99     Node addNode() const { return Node(graph->addNode()); }
   106     Node addNode() const { 
       
   107       return Node(graph->addNode()); 
       
   108     }
       
   109 
   100     Edge addEdge(const Node& source, const Node& target) const { 
   110     Edge addEdge(const Node& source, const Node& target) const { 
   101       return Edge(graph->addEdge(source, target)); }
   111       return Edge(graph->addEdge(source, target)); 
       
   112     }
   102 
   113 
   103     void erase(const Node& i) const { graph->erase(i); }
   114     void erase(const Node& i) const { graph->erase(i); }
   104     void erase(const Edge& i) const { graph->erase(i); }
   115     void erase(const Edge& i) const { graph->erase(i); }
   105   
   116   
   106     void clear() const { graph->clear(); }
   117     void clear() const { graph->clear(); }
   154     RevGraphAdaptorBase() : Parent() { }
   165     RevGraphAdaptorBase() : Parent() { }
   155   public:
   166   public:
   156     typedef typename Parent::Node Node;
   167     typedef typename Parent::Node Node;
   157     typedef typename Parent::Edge Edge;
   168     typedef typename Parent::Edge Edge;
   158 
   169 
   159     //    using Parent::first;
       
   160     void firstIn(Edge& i, const Node& n) const { Parent::firstOut(i, n); }
   170     void firstIn(Edge& i, const Node& n) const { Parent::firstOut(i, n); }
   161     void firstOut(Edge& i, const Node& n ) const { Parent::firstIn(i, n); }
   171     void firstOut(Edge& i, const Node& n ) const { Parent::firstIn(i, n); }
   162 
   172 
   163     //    using Parent::next;
       
   164     void nextIn(Edge& i) const { Parent::nextOut(i); }
   173     void nextIn(Edge& i) const { Parent::nextOut(i); }
   165     void nextOut(Edge& i) const { Parent::nextIn(i); }
   174     void nextOut(Edge& i) const { Parent::nextIn(i); }
   166 
   175 
   167     Node source(const Edge& e) const { return Parent::target(e); }
   176     Node source(const Edge& e) const { return Parent::target(e); }
   168     Node target(const Edge& e) const { return Parent::source(e); }
   177     Node target(const Edge& e) const { return Parent::source(e); }
   302     bool hidden(const Node& n) const { return !(*node_filter_map)[n]; }
   311     bool hidden(const Node& n) const { return !(*node_filter_map)[n]; }
   303 
   312 
   304     /// Returns true if \c n is hidden.
   313     /// Returns true if \c n is hidden.
   305     bool hidden(const Edge& e) const { return !(*edge_filter_map)[e]; }
   314     bool hidden(const Edge& e) const { return !(*edge_filter_map)[e]; }
   306 
   315 
   307     /// \warning This is a linear time operation and works only if s
   316     typedef False NodeNumTag;
   308     /// \c Graph::NodeIt is defined.
   317     typedef False EdgeNumTag;
   309     /// \todo assign tags.
       
   310     int nodeNum() const { 
       
   311       int i=0;
       
   312       Node n;
       
   313       for (first(n); n!=INVALID; next(n)) ++i;
       
   314       return i; 
       
   315     }
       
   316 
       
   317     /// \warning This is a linear time operation and works only if 
       
   318     /// \c Graph::EdgeIt is defined.
       
   319     /// \todo assign tags.
       
   320     int edgeNum() const { 
       
   321       int i=0;
       
   322       Edge e;
       
   323       for (first(e); e!=INVALID; next(e)) ++i;
       
   324       return i; 
       
   325     }
       
   326   };
   318   };
   327 
   319 
   328   template <typename _Graph, typename NodeFilterMap, typename EdgeFilterMap>
   320   template <typename _Graph, typename NodeFilterMap, typename EdgeFilterMap>
   329   class SubGraphAdaptorBase<_Graph, NodeFilterMap, EdgeFilterMap, false> 
   321   class SubGraphAdaptorBase<_Graph, NodeFilterMap, EdgeFilterMap, false> 
   330     : public GraphAdaptorBase<_Graph> {
   322     : public GraphAdaptorBase<_Graph> {
   411     bool hidden(const Node& n) const { return !(*node_filter_map)[n]; }
   403     bool hidden(const Node& n) const { return !(*node_filter_map)[n]; }
   412 
   404 
   413     /// Returns true if \c n is hidden.
   405     /// Returns true if \c n is hidden.
   414     bool hidden(const Edge& e) const { return !(*edge_filter_map)[e]; }
   406     bool hidden(const Edge& e) const { return !(*edge_filter_map)[e]; }
   415 
   407 
   416     /// \warning This is a linear time operation and works only if s
   408     typedef False NodeNumTag;
   417     /// \c Graph::NodeIt is defined.
   409     typedef False EdgeNumTag;
   418     /// \todo assign tags.
       
   419     int nodeNum() const { 
       
   420       int i=0;
       
   421       Node n;
       
   422       for (first(n); n!=INVALID; next(n)) ++i;
       
   423       return i; 
       
   424     }
       
   425 
       
   426     /// \warning This is a linear time operation and works only if 
       
   427     /// \c Graph::EdgeIt is defined.
       
   428     /// \todo assign tags.
       
   429     int edgeNum() const { 
       
   430       int i=0;
       
   431       Edge e;
       
   432       for (first(e); e!=INVALID; next(e)) ++i;
       
   433       return i; 
       
   434     }
       
   435   };
   410   };
   436 
   411 
   437   /*! \brief A graph adaptor for hiding nodes and edges from a graph.
   412   /*! \brief A graph adaptor for hiding nodes and edges from a graph.
   438     
   413     
   439   \warning Graph adaptors are in even more experimental state than the other
   414   \warning Graph adaptors are in even more experimental state than the other
   440   parts of the lib. Use them at you own risk.
   415   parts of the lib. Use them at you own risk.
   441   
   416   
   442   SubGraphAdaptor shows the graph with filtered node-set and 
   417   SubGraphAdaptor shows the graph with filtered node-set and 
   443   edge-set. 
   418   edge-set. If the \c checked parameter is true then it filters the edgeset
       
   419   to do not get invalid edges without source or target.
   444   Let \f$G=(V, A)\f$ be a directed graph 
   420   Let \f$G=(V, A)\f$ be a directed graph 
   445   and suppose that the graph instance \c g of type ListGraph implements 
   421   and suppose that the graph instance \c g of type ListGraph implements 
   446   \f$G\f$. 
   422   \f$G\f$. 
   447   Let moreover \f$b_V\f$ and 
   423   Let moreover \f$b_V\f$ and 
   448   \f$b_A\f$ be bool-valued functions resp. on the node-set and edge-set. 
   424   \f$b_A\f$ be bool-valued functions resp. on the node-set and edge-set. 
   451   SubGraphAdaptor<...>::EdgeIt iterates 
   427   SubGraphAdaptor<...>::EdgeIt iterates 
   452   on the edge-set \f$\{e\in A : b_A(e)=true\}\f$. Similarly, 
   428   on the edge-set \f$\{e\in A : b_A(e)=true\}\f$. Similarly, 
   453   SubGraphAdaptor<...>::OutEdgeIt and SubGraphAdaptor<...>::InEdgeIt iterates 
   429   SubGraphAdaptor<...>::OutEdgeIt and SubGraphAdaptor<...>::InEdgeIt iterates 
   454   only on edges leaving and entering a specific node which have true value.
   430   only on edges leaving and entering a specific node which have true value.
   455 
   431 
   456   We have to note that this does not mean that an 
   432   If the \c checked template parameter is false then we have to note that 
   457   induced subgraph is obtained, the node-iterator cares only the filter 
   433   the node-iterator cares only the filter on the node-set, and the 
   458   on the node-set, and the edge-iterators care only the filter on the 
   434   edge-iterator cares only the filter on the edge-set. This way the edge-map
   459   edge-set. 
   435   should filter all edges which's source or target is filtered by the 
       
   436   node-filter.
   460   \code
   437   \code
   461   typedef ListGraph Graph;
   438   typedef ListGraph Graph;
   462   Graph g;
   439   Graph g;
   463   typedef Graph::Node Node;
   440   typedef Graph::Node Node;
   464   typedef Graph::Edge Edge;
   441   typedef Graph::Edge Edge;
   517   \warning Graph adaptors are in even more experimental state than the other
   494   \warning Graph adaptors are in even more experimental state than the other
   518   parts of the lib. Use them at you own risk.
   495   parts of the lib. Use them at you own risk.
   519   
   496   
   520   An adaptor for hiding nodes from a graph.
   497   An adaptor for hiding nodes from a graph.
   521   This adaptor specializes SubGraphAdaptor in the way that only the node-set 
   498   This adaptor specializes SubGraphAdaptor in the way that only the node-set 
   522   can be filtered. Note that this does not mean of considering induced 
   499   can be filtered. In usual case the checked parameter is true, we get the
   523   subgraph, the edge-iterators consider the original edge-set.
   500   induced subgraph. But if the checked parameter is false then we can only
       
   501   filter only isolated nodes.
   524   \author Marton Makai
   502   \author Marton Makai
   525   */
   503   */
   526   template<typename Graph, typename NodeFilterMap, bool checked = true>
   504   template<typename Graph, typename NodeFilterMap, bool checked = true>
   527   class NodeSubGraphAdaptor : 
   505   class NodeSubGraphAdaptor : 
   528     public SubGraphAdaptor<Graph, NodeFilterMap, 
   506     public SubGraphAdaptor<Graph, NodeFilterMap, 
   701     UndirGraphAdaptorBase() : Parent() { }
   679     UndirGraphAdaptorBase() : Parent() { }
   702   public:
   680   public:
   703     typedef typename Parent::UndirEdge UndirEdge;
   681     typedef typename Parent::UndirEdge UndirEdge;
   704     typedef typename Parent::Edge Edge;
   682     typedef typename Parent::Edge Edge;
   705     
   683     
   706     /// \bug Why cant an edge say that it is forward or not??? 
       
   707     /// By this, a pointer to the graph have to be stored
       
   708     /// The implementation
       
   709     template <typename T>
   684     template <typename T>
   710     class EdgeMap {
   685     class EdgeMap {
   711     protected:
   686     protected:
   712       const UndirGraphAdaptorBase<_Graph>* g;
   687       const UndirGraphAdaptorBase<_Graph>* g;
   713       template <typename TT> friend class EdgeMap;
   688       template <typename TT> friend class EdgeMap;
  1120     }
  1095     }
  1121 
  1096 
  1122     int edgeNum() const { 
  1097     int edgeNum() const { 
  1123       return 2*this->graph->edgeNum();
  1098       return 2*this->graph->edgeNum();
  1124     }
  1099     }
  1125     //    KEEP_MAPS(Parent, BidirGraphAdaptor);
       
  1126   };
  1100   };
  1127 
  1101 
  1128 
  1102 
  1129   template<typename Graph, typename Number,
  1103   template<typename Graph, typename Number,
  1130 	   typename CapacityMap, typename FlowMap>
  1104 	   typename CapacityMap, typename FlowMap>
  1329     } 
  1303     } 
  1330 
  1304 
  1331   };
  1305   };
  1332 
  1306 
  1333   template <typename _Graph>
  1307   template <typename _Graph>
       
  1308   class SplitGraphAdaptorBase 
       
  1309     : public GraphAdaptorBase<_Graph> {
       
  1310   public:
       
  1311     typedef GraphAdaptorBase<_Graph> Parent;
       
  1312 
       
  1313     class Node;
       
  1314     class Edge;
       
  1315     template <typename T> class NodeMap;
       
  1316     template <typename T> class EdgeMap;
       
  1317     
       
  1318 
       
  1319     class Node : public Parent::Node {
       
  1320       friend class SplitGraphAdaptorBase;
       
  1321       template <typename T> friend class NodeMap;
       
  1322       typedef typename Parent::Node NodeParent;
       
  1323     private:
       
  1324 
       
  1325       bool entry;
       
  1326       Node(typename Parent::Node _node, bool _entry)
       
  1327 	: Parent::Node(_node), entry(_entry) {}
       
  1328       
       
  1329     public:
       
  1330       Node() {}
       
  1331       Node(Invalid) : NodeParent(INVALID), entry(true) {}
       
  1332 
       
  1333       bool operator==(const Node& node) const {
       
  1334 	return NodeParent::operator==(node) && entry == node.entry;
       
  1335       }
       
  1336       
       
  1337       bool operator!=(const Node& node) const {
       
  1338 	return !(*this == node);
       
  1339       }
       
  1340       
       
  1341       bool operator<(const Node& node) const {
       
  1342 	return NodeParent::operator<(node) || 
       
  1343 	  (NodeParent::operator==(node) && entry < node.entry);
       
  1344       }
       
  1345     };
       
  1346 
       
  1347     /// \todo May we want VARIANT/union type
       
  1348     class Edge : public Parent::Edge {
       
  1349       friend class SplitGraphAdaptorBase;
       
  1350       template <typename T> friend class EdgeMap;
       
  1351     private:
       
  1352       typedef typename Parent::Edge EdgeParent;
       
  1353       typedef typename Parent::Node NodeParent;
       
  1354       NodeParent bind;
       
  1355 
       
  1356       Edge(const EdgeParent& edge, const NodeParent& node)
       
  1357 	: EdgeParent(edge), bind(node) {}
       
  1358     public:
       
  1359       Edge() {}
       
  1360       Edge(Invalid) : EdgeParent(INVALID), bind(INVALID) {}
       
  1361 
       
  1362       bool operator==(const Edge& edge) const {
       
  1363 	return EdgeParent::operator==(edge) && bind == edge.bind;
       
  1364       }
       
  1365       
       
  1366       bool operator!=(const Edge& edge) const {
       
  1367 	return !(*this == edge);
       
  1368       }
       
  1369       
       
  1370       bool operator<(const Edge& edge) const {
       
  1371 	return EdgeParent::operator<(edge) || 
       
  1372 	  (EdgeParent::operator==(edge) && bind < edge.bind);
       
  1373       }
       
  1374     };
       
  1375 
       
  1376     void first(Node& node) const {
       
  1377       Parent::first(node);
       
  1378       node.entry = true;
       
  1379     } 
       
  1380 
       
  1381     void next(Node& node) const {
       
  1382       if (node.entry) {
       
  1383 	node.entry = false;
       
  1384       } else {
       
  1385 	node.entry = true;
       
  1386 	Parent::next(node);
       
  1387       }
       
  1388     }
       
  1389 
       
  1390     void first(Edge& edge) const {
       
  1391       Parent::first(edge);
       
  1392       if ((typename Parent::Edge&)edge == INVALID) {
       
  1393 	Parent::first(edge.bind);
       
  1394       } else {
       
  1395 	edge.bind = INVALID;
       
  1396       }
       
  1397     }
       
  1398 
       
  1399     void next(Edge& edge) const {
       
  1400       if ((typename Parent::Edge&)edge != INVALID) {
       
  1401 	Parent::next(edge);
       
  1402 	if ((typename Parent::Edge&)edge == INVALID) {
       
  1403 	  Parent::first(edge.bind);
       
  1404 	}
       
  1405       } else {
       
  1406 	Parent::next(edge.bind);
       
  1407       }      
       
  1408     }
       
  1409 
       
  1410     void firstIn(Edge& edge, const Node& node) const {
       
  1411       if (node.entry) {
       
  1412 	Parent::firstIn(edge, node);
       
  1413 	edge.bind = INVALID;
       
  1414       } else {
       
  1415 	(typename Parent::Edge&)edge = INVALID;
       
  1416 	edge.bind = node;
       
  1417       }
       
  1418     }
       
  1419 
       
  1420     void nextIn(Edge& edge) const {
       
  1421       if ((typename Parent::Edge&)edge != INVALID) {
       
  1422 	Parent::nextIn(edge);
       
  1423       } else {
       
  1424 	edge.bind = INVALID;
       
  1425       }      
       
  1426     }
       
  1427 
       
  1428     void firstOut(Edge& edge, const Node& node) const {
       
  1429       if (!node.entry) {
       
  1430 	Parent::firstOut(edge, node);
       
  1431 	edge.bind = INVALID;
       
  1432       } else {
       
  1433 	(typename Parent::Edge&)edge = INVALID;
       
  1434 	edge.bind = node;
       
  1435       }
       
  1436     }
       
  1437 
       
  1438     void nextOut(Edge& edge) const {
       
  1439       if ((typename Parent::Edge&)edge != INVALID) {
       
  1440 	Parent::nextOut(edge);
       
  1441       } else {
       
  1442 	edge.bind = INVALID;
       
  1443       }
       
  1444     }
       
  1445 
       
  1446     Node source(const Edge& edge) const {
       
  1447       if ((typename Parent::Edge&)edge != INVALID) {
       
  1448 	return Node(Parent::source(edge), false);
       
  1449       } else {
       
  1450 	return Node(edge.bind, true);
       
  1451       }
       
  1452     }
       
  1453 
       
  1454     Node target(const Edge& edge) const {
       
  1455       if ((typename Parent::Edge&)edge != INVALID) {
       
  1456 	return Node(Parent::target(edge), true);
       
  1457       } else {
       
  1458 	return Node(edge.bind, false);
       
  1459       }
       
  1460     }
       
  1461 
       
  1462     static bool entryNode(const Node& node) {
       
  1463       return node.entry;
       
  1464     }
       
  1465 
       
  1466     static bool exitNode(const Node& node) {
       
  1467       return !node.entry;
       
  1468     }
       
  1469 
       
  1470     static Node getEntry(const typename Parent::Node& node) {
       
  1471       return Node(node, true);
       
  1472     }
       
  1473 
       
  1474     static Node getExit(const typename Parent::Node& node) {
       
  1475       return Node(node, false);
       
  1476     }
       
  1477 
       
  1478     static bool originalEdge(const Edge& edge) {
       
  1479       return (typename Parent::Edge&)edge != INVALID;
       
  1480     }
       
  1481 
       
  1482     static bool bindingEdge(const Edge& edge) {
       
  1483       return edge.bind != INVALID;
       
  1484     }
       
  1485 
       
  1486     static Node getBindedNode(const Edge& edge) {
       
  1487       return edge.bind;
       
  1488     }
       
  1489 
       
  1490     int nodeNum() const {
       
  1491       return Parent::nodeNum() * 2;
       
  1492     }
       
  1493 
       
  1494     typedef CompileTimeAnd<typename Parent::NodeNumTag, 
       
  1495     			   typename Parent::EdgeNumTag> EdgeNumTag;
       
  1496     
       
  1497     int edgeNum() const {
       
  1498       return Parent::edgeNum() + Parent::nodeNum();
       
  1499     }
       
  1500 
       
  1501     Edge findEdge(const Node& source, const Node& target, 
       
  1502 		  const Edge& prev = INVALID) const {
       
  1503       if (exitNode(source) && entryNode(target)) {
       
  1504 	return Parent::findEdge(source, target, prev);
       
  1505       } else {
       
  1506 	if (prev == INVALID && entryNode(source) && exitNode(target) && 
       
  1507 	    (typename Parent::Node&)source == (typename Parent::Node&)target) {
       
  1508 	  return Edge(INVALID, source);
       
  1509 	} else {
       
  1510 	  return INVALID;
       
  1511 	}
       
  1512       }
       
  1513     }
       
  1514     
       
  1515     template <typename T>
       
  1516     class NodeMap : public MapBase<Node, T> {
       
  1517       typedef typename Parent::template NodeMap<T> NodeImpl;
       
  1518     public:
       
  1519       NodeMap(const SplitGraphAdaptorBase& _graph) 
       
  1520 	: entry(_graph), exit(_graph) {}
       
  1521       NodeMap(const SplitGraphAdaptorBase& _graph, const T& t) 
       
  1522 	: entry(_graph, t), exit(_graph, t) {}
       
  1523       
       
  1524       void set(const Node& key, const T& val) {
       
  1525 	if (key.entry) { entry.set(key, val); }
       
  1526 	else {exit.set(key, val); }
       
  1527       }
       
  1528       
       
  1529       typename ReferenceMapTraits<NodeImpl>::Reference 
       
  1530       operator[](const Node& key) {
       
  1531 	if (key.entry) { return entry[key]; }
       
  1532 	else { return exit[key]; }
       
  1533       }
       
  1534 
       
  1535       T operator[](const Node& key) const {
       
  1536 	if (key.entry) { return entry[key]; }
       
  1537 	else { return exit[key]; }
       
  1538       }
       
  1539 
       
  1540     private:
       
  1541       NodeImpl entry, exit;
       
  1542     };
       
  1543 
       
  1544     template <typename T>
       
  1545     class EdgeMap : public MapBase<Edge, T> {
       
  1546       typedef typename Parent::template NodeMap<T> NodeImpl;
       
  1547       typedef typename Parent::template EdgeMap<T> EdgeImpl;
       
  1548     public:
       
  1549       EdgeMap(const SplitGraphAdaptorBase& _graph) 
       
  1550 	: bind(_graph), orig(_graph) {}
       
  1551       EdgeMap(const SplitGraphAdaptorBase& _graph, const T& t) 
       
  1552 	: bind(_graph, t), orig(_graph, t) {}
       
  1553       
       
  1554       void set(const Edge& key, const T& val) {
       
  1555 	if ((typename Parent::Edge&)key != INVALID) { orig.set(key, val); }
       
  1556 	else {bind.set(key.bind, val); }
       
  1557       }
       
  1558       
       
  1559       typename ReferenceMapTraits<EdgeImpl>::Reference
       
  1560       operator[](const Edge& key) {
       
  1561 	if ((typename Parent::Edge&)key != INVALID) { return orig[key]; }
       
  1562 	else {return bind[key.bind]; }
       
  1563       }
       
  1564 
       
  1565       T operator[](const Edge& key) const {
       
  1566 	if ((typename Parent::Edge&)key != INVALID) { return orig[key]; }
       
  1567 	else {return bind[key.bind]; }
       
  1568       }
       
  1569 
       
  1570     private:
       
  1571       typename Parent::template NodeMap<T> bind;
       
  1572       typename Parent::template EdgeMap<T> orig;
       
  1573     };
       
  1574 
       
  1575     template <typename EntryMap, typename ExitMap>
       
  1576     class CombinedNodeMap : public MapBase<Node, typename EntryMap::Value> {
       
  1577     public:
       
  1578       typedef MapBase<Node, typename EntryMap::Value> Parent;
       
  1579 
       
  1580       typedef typename Parent::Key Key;
       
  1581       typedef typename Parent::Value Value;
       
  1582 
       
  1583       CombinedNodeMap(EntryMap& _entryMap, ExitMap& _exitMap) 
       
  1584 	: entryMap(_entryMap), exitMap(_exitMap) {}
       
  1585 
       
  1586       Value& operator[](const Key& key) {
       
  1587 	if (key.entry) {
       
  1588 	  return entryMap[key];
       
  1589 	} else {
       
  1590 	  return exitMap[key];
       
  1591 	}
       
  1592       }
       
  1593 
       
  1594       Value operator[](const Key& key) const {
       
  1595 	if (key.entry) {
       
  1596 	  return entryMap[key];
       
  1597 	} else {
       
  1598 	  return exitMap[key];
       
  1599 	}
       
  1600       }
       
  1601 
       
  1602       void set(const Key& key, const Value& value) {
       
  1603 	if (key.entry) {
       
  1604 	  entryMap.set(key, value);
       
  1605 	} else {
       
  1606 	  exitMap.set(key, value);
       
  1607 	}
       
  1608       }
       
  1609       
       
  1610     private:
       
  1611       
       
  1612       EntryMap& entryMap;
       
  1613       ExitMap& exitMap;
       
  1614       
       
  1615     };
       
  1616 
       
  1617     template <typename EdgeMap, typename NodeMap>
       
  1618     class CombinedEdgeMap : public MapBase<Edge, typename EdgeMap::Value> {
       
  1619     public:
       
  1620       typedef MapBase<Edge, typename EdgeMap::Value> Parent;
       
  1621 
       
  1622       typedef typename Parent::Key Key;
       
  1623       typedef typename Parent::Value Value;
       
  1624 
       
  1625       CombinedEdgeMap(EdgeMap& _edgeMap, NodeMap& _nodeMap) 
       
  1626 	: edgeMap(_edgeMap), nodeMap(_nodeMap) {}
       
  1627 
       
  1628       void set(const Edge& edge, const Value& val) {
       
  1629 	if (SplitGraphAdaptorBase::originalEdge(edge)) {
       
  1630 	  edgeMap.set(edge, val);
       
  1631 	} else {
       
  1632 	  nodeMap.set(SplitGraphAdaptorBase::bindedNode(edge), val);
       
  1633 	}
       
  1634       }
       
  1635 
       
  1636       Value operator[](const Key& edge) const {
       
  1637 	if (SplitGraphAdaptorBase::originalEdge(edge)) {
       
  1638 	  return edgeMap[edge];
       
  1639 	} else {
       
  1640 	  return nodeMap[SplitGraphAdaptorBase::bindedNode(edge)];
       
  1641 	}
       
  1642       }      
       
  1643 
       
  1644       Value& operator[](const Key& edge) {
       
  1645 	if (SplitGraphAdaptorBase::originalEdge(edge)) {
       
  1646 	  return edgeMap[edge];
       
  1647 	} else {
       
  1648 	  return nodeMap[SplitGraphAdaptorBase::bindedNode(edge)];
       
  1649 	}
       
  1650       }      
       
  1651       
       
  1652     private:
       
  1653       EdgeMap& edgeMap;
       
  1654       NodeMap& nodeMap;
       
  1655     };
       
  1656 
       
  1657   };
       
  1658 
       
  1659   template <typename _Graph>
       
  1660   class SplitGraphAdaptor 
       
  1661     : public IterableGraphExtender<SplitGraphAdaptorBase<_Graph> > {
       
  1662   public:
       
  1663     typedef IterableGraphExtender<SplitGraphAdaptorBase<_Graph> > Parent;
       
  1664 
       
  1665     SplitGraphAdaptor(_Graph& graph) {
       
  1666       Parent::setGraph(graph);
       
  1667     }
       
  1668 
       
  1669 
       
  1670   };
       
  1671 
       
  1672   template <typename _Graph>
  1334   class NewEdgeSetAdaptorBase {
  1673   class NewEdgeSetAdaptorBase {
  1335   public:
  1674   public:
  1336 
  1675 
  1337     typedef _Graph Graph;
  1676     typedef _Graph Graph;
  1338     typedef typename Graph::Node Node;
  1677     typedef typename Graph::Node Node;