src/hugo/list_graph.h
changeset 782 df2e45e09652
parent 774 4297098d9677
child 798 6d1abeb62dd3
equal deleted inserted replaced
10:24f6be559575 11:ba35b0eb55f1
     6 ///\ingroup graphs
     6 ///\ingroup graphs
     7 ///\file
     7 ///\file
     8 ///\brief ListGraph, SymListGraph, NodeSet and EdgeSet classes.
     8 ///\brief ListGraph, SymListGraph, NodeSet and EdgeSet classes.
     9 
     9 
    10 #include <vector>
    10 #include <vector>
    11 #include <limits.h>
    11 #include <climits>
    12 
    12 
    13 #include <hugo/invalid.h>
    13 #include <hugo/invalid.h>
       
    14 
       
    15 #include <hugo/map_registry.h>
       
    16 #include <hugo/array_map_factory.h>
       
    17 
       
    18 #include <hugo/sym_map_factory.h>
       
    19 
       
    20 #include <hugo/map_defines.h>
       
    21 
    14 
    22 
    15 namespace hugo {
    23 namespace hugo {
    16 
    24 
    17 /// \addtogroup graphs
    25 /// \addtogroup graphs
    18 /// @{
    26 /// @{
    19 
    27 
    20   class SymListGraph;
    28 //  class SymListGraph;
    21 
    29 
    22   ///A list graph class.
    30   ///A list graph class.
    23 
    31 
    24   ///This is a simple and fast erasable graph implementation.
    32   ///This is a simple and fast erasable graph implementation.
    25   ///
    33   ///
    54     int first_free_node;
    62     int first_free_node;
    55     std::vector<EdgeT> edges;
    63     std::vector<EdgeT> edges;
    56     //The first free edge
    64     //The first free edge
    57     int first_free_edge;
    65     int first_free_edge;
    58     
    66     
    59   protected:
    67   public:
    60     
    68     
    61     template <typename Key> class DynMapBase
    69     typedef ListGraph Graph;
    62     {
       
    63     protected:
       
    64       const ListGraph* G; 
       
    65     public:
       
    66       virtual void add(const Key k) = 0;
       
    67       virtual void erase(const Key k) = 0;
       
    68       DynMapBase(const ListGraph &_G) : G(&_G) {}
       
    69       virtual ~DynMapBase() {}
       
    70       friend class ListGraph;
       
    71     };
       
    72     
       
    73   public:
       
    74     template <typename T> class EdgeMap;
       
    75     template <typename T> class NodeMap;
       
    76     
    70     
    77     class Node;
    71     class Node;
    78     class Edge;
    72     class Edge;
    79 
    73 
    80     //  protected:
       
    81     // HELPME:
       
    82   protected:
       
    83     ///\bug It must be public because of SymEdgeMap.
       
    84     ///
       
    85     mutable std::vector<DynMapBase<Node> * > dyn_node_maps;
       
    86     ///\bug It must be public because of SymEdgeMap.
       
    87     ///
       
    88     mutable std::vector<DynMapBase<Edge> * > dyn_edge_maps;
       
    89     
    74     
    90   public:
    75   public:
    91 
    76 
    92     class NodeIt;
    77     class NodeIt;
    93     class EdgeIt;
    78     class EdgeIt;
    94     class OutEdgeIt;
    79     class OutEdgeIt;
    95     class InEdgeIt;
    80     class InEdgeIt;
    96     
    81 
    97   public:
    82     CREATE_MAP_REGISTRIES;
    98 
    83     CREATE_MAPS(ArrayMapFactory);
    99     ListGraph() : nodes(), first_node(-1),
    84 
   100 		  first_free_node(-1), edges(), first_free_edge(-1) {}
    85   public:
   101     ListGraph(const ListGraph &_g) : nodes(_g.nodes), first_node(_g.first_node),
    86 
   102 				     first_free_node(_g.first_free_node),
    87     ListGraph() 
   103 				     edges(_g.edges),
    88       : nodes(), first_node(-1),
   104 				     first_free_edge(_g.first_free_edge) {}
    89 	first_free_node(-1), edges(), first_free_edge(-1) {}
   105     
    90 
   106     ~ListGraph()
    91     ListGraph(const ListGraph &_g) 
   107     {
    92       : nodes(_g.nodes), first_node(_g.first_node),
   108       for(std::vector<DynMapBase<Node> * >::iterator i=dyn_node_maps.begin();
    93 	first_free_node(_g.first_free_node), edges(_g.edges),
   109 	  i!=dyn_node_maps.end(); ++i) (**i).G=NULL;
    94 	first_free_edge(_g.first_free_edge) {}
   110       for(std::vector<DynMapBase<Edge> * >::iterator i=dyn_edge_maps.begin();
    95     
   111 	  i!=dyn_edge_maps.end(); ++i) (**i).G=NULL;
       
   112     }
       
   113 
       
   114     int nodeNum() const { return nodes.size(); }  //FIXME: What is this?
    96     int nodeNum() const { return nodes.size(); }  //FIXME: What is this?
   115     int edgeNum() const { return edges.size(); }  //FIXME: What is this?
    97     int edgeNum() const { return edges.size(); }  //FIXME: What is this?
   116 
    98 
   117     ///Set the expected number of edges
    99     ///Set the expected number of edges
   118 
   100 
   168       nodes[n].first_in = nodes[n].first_out = -1;
   150       nodes[n].first_in = nodes[n].first_out = -1;
   169       
   151       
   170       Node nn; nn.n=n;
   152       Node nn; nn.n=n;
   171 
   153 
   172       //Update dynamic maps
   154       //Update dynamic maps
   173       for(std::vector<DynMapBase<Node> * >::iterator i=dyn_node_maps.begin();
   155       node_maps.add(nn);
   174 	  i!=dyn_node_maps.end(); ++i) (**i).add(nn);
       
   175 
   156 
   176       return nn;
   157       return nn;
   177     }
   158     }
   178     
   159     
   179     Edge addEdge(Node u, Node v) {
   160     Edge addEdge(Node u, Node v) {
   200       nodes[u.n].first_out = nodes[v.n].first_in = n;
   181       nodes[u.n].first_out = nodes[v.n].first_in = n;
   201 
   182 
   202       Edge e; e.n=n;
   183       Edge e; e.n=n;
   203 
   184 
   204       //Update dynamic maps
   185       //Update dynamic maps
   205       for(std::vector<DynMapBase<Edge> * >::iterator i=dyn_edge_maps.begin();
   186       edge_maps.add(e);
   206 	  i!=dyn_edge_maps.end(); ++i) (**i).add(e);
       
   207 
   187 
   208       return e;
   188       return e;
   209     }
   189     }
   210     
   190     
   211     /// Finds an edge between two nodes.
   191     /// Finds an edge between two nodes.
   242       edges[n].next_in = first_free_edge;
   222       edges[n].next_in = first_free_edge;
   243       first_free_edge = n;      
   223       first_free_edge = n;      
   244 
   224 
   245       //Update dynamic maps
   225       //Update dynamic maps
   246       Edge e; e.n=n;
   226       Edge e; e.n=n;
   247       for(std::vector<DynMapBase<Edge> * >::iterator i=dyn_edge_maps.begin();
   227       edge_maps.erase(e);
   248 	  i!=dyn_edge_maps.end(); ++i) (**i).erase(e);
   228 
   249     }
   229     }
   250       
   230       
   251   public:
   231   public:
   252 
   232 
   253     void erase(Node nn) {
   233     void erase(Node nn) {
   263       
   243       
   264       nodes[n].next = first_free_node;
   244       nodes[n].next = first_free_node;
   265       first_free_node = n;
   245       first_free_node = n;
   266 
   246 
   267       //Update dynamic maps
   247       //Update dynamic maps
   268       for(std::vector<DynMapBase<Node> * >::iterator i=dyn_node_maps.begin();
   248       node_maps.erase(nn);
   269 	  i!=dyn_node_maps.end(); ++i) (**i).erase(nn);
   249 
   270     }
   250     }
   271     
   251     
   272     void erase(Edge e) { eraseEdge(e.n); }
   252     void erase(Edge e) { eraseEdge(e.n); }
   273 
   253 
   274     ///\bug Dynamic maps must be updated!
       
   275     ///
       
   276     void clear() {
   254     void clear() {
   277       nodes.clear();edges.clear();
   255       edge_maps.clear();
       
   256       edges.clear();
       
   257       node_maps.clear();
       
   258       nodes.clear();
   278       first_node=first_free_node=first_free_edge=-1;
   259       first_node=first_free_node=first_free_edge=-1;
   279     }
   260     }
   280 
   261 
   281     class Node {
   262     class Node {
   282       friend class ListGraph;
   263       friend class ListGraph;
   408 	: Edge(_G.nodes[v.n].first_in), G(&_G) { }
   389 	: Edge(_G.nodes[v.n].first_in), G(&_G) { }
   409       InEdgeIt &operator++() { n=G->edges[n].next_in; return *this; }
   390       InEdgeIt &operator++() { n=G->edges[n].next_in; return *this; }
   410       //      ///Validity check
   391       //      ///Validity check
   411       //      operator bool() { return Edge::operator bool(); }      
   392       //      operator bool() { return Edge::operator bool(); }      
   412     };
   393     };
   413 
       
   414     template <typename T> class NodeMap : public DynMapBase<Node>
       
   415     {
       
   416       std::vector<T> container;
       
   417 
       
   418     public:
       
   419       typedef T ValueType;
       
   420       typedef Node KeyType;
       
   421 
       
   422       NodeMap(const ListGraph &_G) :
       
   423 	DynMapBase<Node>(_G), container(_G.maxNodeId())
       
   424       {
       
   425 	G->dyn_node_maps.push_back(this);
       
   426       }
       
   427       NodeMap(const ListGraph &_G,const T &t) :
       
   428 	DynMapBase<Node>(_G), container(_G.maxNodeId(),t)
       
   429       {
       
   430 	G->dyn_node_maps.push_back(this);
       
   431       }
       
   432       
       
   433       NodeMap(const NodeMap<T> &m) :
       
   434  	DynMapBase<Node>(*m.G), container(m.container)
       
   435       {
       
   436  	G->dyn_node_maps.push_back(this);
       
   437       }
       
   438 
       
   439       template<typename TT> friend class NodeMap;
       
   440  
       
   441       ///\todo It can copy between different types.
       
   442       ///
       
   443       template<typename TT> NodeMap(const NodeMap<TT> &m) :
       
   444 	DynMapBase<Node>(*m.G), container(m.container.size())
       
   445 
       
   446       {
       
   447 	G->dyn_node_maps.push_back(this);
       
   448 	typename std::vector<TT>::const_iterator i;
       
   449 	for(typename std::vector<TT>::const_iterator i=m.container.begin();
       
   450 	    i!=m.container.end();
       
   451 	    i++)
       
   452 	  container.push_back(*i);
       
   453       }
       
   454       ~NodeMap()
       
   455       {
       
   456 	if(G) {
       
   457 	  std::vector<DynMapBase<Node>* >::iterator i;
       
   458 	  for(i=G->dyn_node_maps.begin();
       
   459 	      i!=G->dyn_node_maps.end() && *i!=this; ++i) ;
       
   460 	  //if(*i==this) G->dyn_node_maps.erase(i); //FIXME: Way too slow...
       
   461 	  //A better way to do that: (Is this really important?)
       
   462 	  if(*i==this) {
       
   463 	    *i=G->dyn_node_maps.back();
       
   464 	    G->dyn_node_maps.pop_back();
       
   465 	  }
       
   466 	}
       
   467       }
       
   468 
       
   469       void add(const Node k) 
       
   470       {
       
   471 	if(k.n>=int(container.size())) container.resize(k.n+1);
       
   472       }
       
   473 
       
   474       void erase(const Node) { }
       
   475       
       
   476       void set(Node n, T a) { container[n.n]=a; }
       
   477       //'T& operator[](Node n)' would be wrong here
       
   478       typename std::vector<T>::reference
       
   479       operator[](Node n) { return container[n.n]; }
       
   480       //'const T& operator[](Node n)' would be wrong here
       
   481       typename std::vector<T>::const_reference 
       
   482       operator[](Node n) const { return container[n.n]; }
       
   483 
       
   484       ///\warning There is no safety check at all!
       
   485       ///Using operator = between maps attached to different graph may
       
   486       ///cause serious problem.
       
   487       ///\todo Is this really so?
       
   488       ///\todo It can copy between different types.
       
   489       const NodeMap<T>& operator=(const NodeMap<T> &m)
       
   490       {
       
   491 	container = m.container;
       
   492 	return *this;
       
   493       }
       
   494       template<typename TT>
       
   495       const NodeMap<T>& operator=(const NodeMap<TT> &m)
       
   496       {
       
   497 	std::copy(m.container.begin(), m.container.end(), container.begin());
       
   498 	return *this;
       
   499       }
       
   500       
       
   501       void update() {}    //Useless for Dynamic Maps
       
   502       void update(T a) {}  //Useless for Dynamic Maps
       
   503     };
       
   504     
       
   505     template <typename T> class EdgeMap : public DynMapBase<Edge>
       
   506     {
       
   507     protected:
       
   508       std::vector<T> container;
       
   509 
       
   510     public:
       
   511       typedef T ValueType;
       
   512       typedef Edge KeyType;
       
   513 
       
   514       EdgeMap(const ListGraph &_G) :
       
   515 	DynMapBase<Edge>(_G), container(_G.maxEdgeId())
       
   516       {
       
   517 	//FIXME: What if there are empty Id's?
       
   518 	//FIXME: Can I use 'this' in a constructor?
       
   519 	G->dyn_edge_maps.push_back(this);
       
   520       }
       
   521       EdgeMap(const ListGraph &_G,const T &t) :
       
   522 	DynMapBase<Edge>(_G), container(_G.maxEdgeId(),t)
       
   523       {
       
   524 	G->dyn_edge_maps.push_back(this);
       
   525       } 
       
   526       EdgeMap(const EdgeMap<T> &m) :
       
   527  	DynMapBase<Edge>(*m.G), container(m.container)
       
   528       {
       
   529  	G->dyn_edge_maps.push_back(this);
       
   530       }
       
   531 
       
   532       template<typename TT> friend class EdgeMap;
       
   533 
       
   534       ///\todo It can copy between different types.
       
   535       ///
       
   536       template<typename TT> EdgeMap(const EdgeMap<TT> &m) :
       
   537 	DynMapBase<Edge>(*m.G), container(m.container.size())
       
   538       {
       
   539 	G->dyn_edge_maps.push_back(this);
       
   540 	typename std::vector<TT>::const_iterator i;
       
   541 	for(typename std::vector<TT>::const_iterator i=m.container.begin();
       
   542 	    i!=m.container.end();
       
   543 	    i++)
       
   544 	  container.push_back(*i);
       
   545       }
       
   546       ~EdgeMap()
       
   547       {
       
   548 	if(G) {
       
   549 	  std::vector<DynMapBase<Edge>* >::iterator i;
       
   550 	  for(i=G->dyn_edge_maps.begin();
       
   551 	      i!=G->dyn_edge_maps.end() && *i!=this; ++i) ;
       
   552 	  //if(*i==this) G->dyn_edge_maps.erase(i); //Way too slow...
       
   553 	  //A better way to do that: (Is this really important?)
       
   554 	  if(*i==this) {
       
   555 	    *i=G->dyn_edge_maps.back();
       
   556 	    G->dyn_edge_maps.pop_back();
       
   557 	  }
       
   558 	}
       
   559       }
       
   560       
       
   561       void add(const Edge k) 
       
   562       {
       
   563 	if(k.n>=int(container.size())) container.resize(k.n+1);
       
   564       }
       
   565       void erase(const Edge) { }
       
   566       
       
   567       void set(Edge n, T a) { container[n.n]=a; }
       
   568       //T get(Edge n) const { return container[n.n]; }
       
   569       typename std::vector<T>::reference
       
   570       operator[](Edge n) { return container[n.n]; }
       
   571       typename std::vector<T>::const_reference
       
   572       operator[](Edge n) const { return container[n.n]; }
       
   573 
       
   574       ///\warning There is no safety check at all!
       
   575       ///Using operator = between maps attached to different graph may
       
   576       ///cause serious problem.
       
   577       ///\todo Is this really so?
       
   578       ///\todo It can copy between different types.
       
   579       const EdgeMap<T>& operator=(const EdgeMap<T> &m)
       
   580       {
       
   581 	container = m.container;
       
   582 	return *this;
       
   583       }
       
   584       template<typename TT>
       
   585       const EdgeMap<T>& operator=(const EdgeMap<TT> &m)
       
   586       {
       
   587 	std::copy(m.container.begin(), m.container.end(), container.begin());
       
   588 	return *this;
       
   589       }
       
   590       
       
   591       void update() {}    //Useless for DynMaps
       
   592       void update(T a) {}  //Useless for DynMaps
       
   593     };
       
   594 
       
   595   };
   394   };
   596 
   395 
   597   ///Graph for bidirectional edges.
   396   ///Graph for bidirectional edges.
   598 
   397 
   599   ///The purpose of this graph structure is to handle graphs
   398   ///The purpose of this graph structure is to handle graphs
   613   ///
   412   ///
   614   ///Here erase(Edge) deletes a pair of edges.
   413   ///Here erase(Edge) deletes a pair of edges.
   615   ///
   414   ///
   616   ///\todo this date structure need some reconsiderations. Maybe it
   415   ///\todo this date structure need some reconsiderations. Maybe it
   617   ///should be implemented independently from ListGraph.
   416   ///should be implemented independently from ListGraph.
   618 
   417   
   619   class SymListGraph : public ListGraph
   418   class SymListGraph : public ListGraph
   620   {
   419   {
   621   public:
   420   public:
   622     template<typename T> class SymEdgeMap;
   421 
   623     template<typename T> friend class SymEdgeMap;
   422     typedef SymListGraph Graph;
       
   423 
       
   424     KEEP_NODE_MAP(ListGraph);
       
   425     KEEP_EDGE_MAP(ListGraph);
       
   426 
       
   427     CREATE_SYM_EDGE_MAP_REGISTRY;
       
   428     CREATE_SYM_EDGE_MAP_FACTORY(ArrayMapFactory);
       
   429     IMPORT_SYM_EDGE_MAP(SymEdgeMapFactory);
   624 
   430 
   625     SymListGraph() : ListGraph() { }
   431     SymListGraph() : ListGraph() { }
   626     SymListGraph(const ListGraph &_g) : ListGraph(_g) { }
   432     SymListGraph(const ListGraph &_g) : ListGraph(_g) { }
   627     ///Adds a pair of oppositely directed edges to the graph.
   433     ///Adds a pair of oppositely directed edges to the graph.
   628     Edge addEdge(Node u, Node v)
   434     Edge addEdge(Node u, Node v)
   629     {
   435     {
   630       Edge e = ListGraph::addEdge(u,v);
   436       Edge e = ListGraph::addEdge(u,v);
   631       ListGraph::addEdge(v,u);
   437       Edge f = ListGraph::addEdge(v,u);
       
   438       sym_edge_maps.add(e);
       
   439       sym_edge_maps.add(f);
       
   440       
   632       return e;
   441       return e;
   633     }
   442     }
   634 
   443 
   635     void erase(Node n) { ListGraph::erase(n); }
   444     void erase(Node n) { ListGraph::erase(n);}
   636     ///The oppositely directed edge.
   445     ///The oppositely directed edge.
   637 
   446 
   638     ///Returns the oppositely directed
   447     ///Returns the oppositely directed
   639     ///pair of the edge \c e.
   448     ///pair of the edge \c e.
   640     static Edge opposite(Edge e)
   449     static Edge opposite(Edge e)
   644       return f;
   453       return f;
   645     }
   454     }
   646     
   455     
   647     ///Removes a pair of oppositely directed edges to the graph.
   456     ///Removes a pair of oppositely directed edges to the graph.
   648     void erase(Edge e) {
   457     void erase(Edge e) {
   649       ListGraph::erase(opposite(e));
   458       Edge f = opposite(e);
       
   459       sym_edge_maps.erase(e);
       
   460       sym_edge_maps.erase(f);
       
   461       ListGraph::erase(f);
   650       ListGraph::erase(e);
   462       ListGraph::erase(e);
   651     }
   463     }    
   652     
       
   653     ///Common data storage for the edge pairs.
       
   654 
       
   655     ///This map makes it possible to store data shared by the oppositely
       
   656     ///directed pairs of edges.
       
   657     template <typename T> class SymEdgeMap : public DynMapBase<Edge>
       
   658     {
       
   659       std::vector<T> container;
       
   660       
       
   661     public:
       
   662       typedef T ValueType;
       
   663       typedef Edge KeyType;
       
   664 
       
   665       SymEdgeMap(const SymListGraph &_G) :
       
   666 	DynMapBase<Edge>(_G), container(_G.maxEdgeId()/2)
       
   667       {
       
   668 	static_cast<const SymListGraph*>(G)->dyn_edge_maps.push_back(this);
       
   669       }
       
   670       SymEdgeMap(const SymListGraph &_G,const T &t) :
       
   671 	DynMapBase<Edge>(_G), container(_G.maxEdgeId()/2,t)
       
   672       {
       
   673 	G->dyn_edge_maps.push_back(this);
       
   674       }
       
   675 
       
   676       SymEdgeMap(const SymEdgeMap<T> &m) :
       
   677  	DynMapBase<SymEdge>(*m.G), container(m.container)
       
   678       {
       
   679  	G->dyn_node_maps.push_back(this);
       
   680       }
       
   681 
       
   682       //      template<typename TT> friend class SymEdgeMap;
       
   683 
       
   684       ///\todo It can copy between different types.
       
   685       ///
       
   686 
       
   687       template<typename TT> SymEdgeMap(const SymEdgeMap<TT> &m) :
       
   688 	DynMapBase<SymEdge>(*m.G), container(m.container.size())
       
   689       {
       
   690 	G->dyn_node_maps.push_back(this);
       
   691 	typename std::vector<TT>::const_iterator i;
       
   692 	for(typename std::vector<TT>::const_iterator i=m.container.begin();
       
   693 	    i!=m.container.end();
       
   694 	    i++)
       
   695 	  container.push_back(*i);
       
   696       }
       
   697  
       
   698       ~SymEdgeMap()
       
   699       {
       
   700 	if(G) {
       
   701 	  std::vector<DynMapBase<Edge>* >::iterator i;
       
   702 	  for(i=static_cast<const SymListGraph*>(G)->dyn_edge_maps.begin();
       
   703 	      i!=static_cast<const SymListGraph*>(G)->dyn_edge_maps.end()
       
   704 		&& *i!=this; ++i) ;
       
   705 	  //if(*i==this) G->dyn_edge_maps.erase(i); //Way too slow...
       
   706 	  //A better way to do that: (Is this really important?)
       
   707 	  if(*i==this) {
       
   708 	    *i=static_cast<const SymListGraph*>(G)->dyn_edge_maps.back();
       
   709 	    static_cast<const SymListGraph*>(G)->dyn_edge_maps.pop_back();
       
   710 	  }
       
   711 	}
       
   712       }
       
   713       
       
   714       void add(const Edge k) 
       
   715       {
       
   716 	if(!k.idref()%2&&k.idref()/2>=int(container.size()))
       
   717 	  container.resize(k.idref()/2+1);
       
   718       }
       
   719       void erase(const Edge k) { }
       
   720       
       
   721       void set(Edge n, T a) { container[n.idref()/2]=a; }
       
   722       //T get(Edge n) const { return container[n.idref()/2]; }
       
   723       typename std::vector<T>::reference
       
   724       operator[](Edge n) { return container[n.idref()/2]; }
       
   725       typename std::vector<T>::const_reference
       
   726       operator[](Edge n) const { return container[n.idref()/2]; }
       
   727 
       
   728       ///\warning There is no safety check at all!
       
   729       ///Using operator = between maps attached to different graph may
       
   730       ///cause serious problem.
       
   731       ///\todo Is this really so?
       
   732       ///\todo It can copy between different types.
       
   733       const SymEdgeMap<T>& operator=(const SymEdgeMap<T> &m)
       
   734       {
       
   735 	container = m.container;
       
   736 	return *this;
       
   737       }
       
   738       template<typename TT>
       
   739       const SymEdgeMap<T>& operator=(const SymEdgeMap<TT> &m)
       
   740       {
       
   741 	std::copy(m.container.begin(), m.container.end(), container.begin());
       
   742 	return *this;
       
   743       }
       
   744       
       
   745       void update() {}    //Useless for DynMaps
       
   746       void update(T a) {}  //Useless for DynMaps
       
   747 
       
   748     };
       
   749 
       
   750   };
   464   };
   751   
   465 
   752 
   466 
   753   ///A graph class containing only nodes.
   467   ///A graph class containing only nodes.
   754 
   468 
   755   ///This class implements a graph structure without edges.
   469   ///This class implements a graph structure without edges.
   756   ///The most useful application of this class is to be the node set of an
   470   ///The most useful application of this class is to be the node set of an
   777     //The first node
   491     //The first node
   778     int first_node;
   492     int first_node;
   779     //The first free node
   493     //The first free node
   780     int first_free_node;
   494     int first_free_node;
   781     
   495     
   782   protected:
   496   public:
   783     
   497 
   784     template <typename Key> class DynMapBase
   498     typedef NodeSet Graph;
   785     {
       
   786     protected:
       
   787       const NodeSet* G; 
       
   788     public:
       
   789       virtual void add(const Key k) = 0;
       
   790       virtual void erase(const Key k) = 0;
       
   791       DynMapBase(const NodeSet &_G) : G(&_G) {}
       
   792       virtual ~DynMapBase() {}
       
   793       friend class NodeSet;
       
   794     };
       
   795     
       
   796   public:
       
   797     template <typename T> class EdgeMap;
       
   798     template <typename T> class NodeMap;
       
   799     
   499     
   800     class Node;
   500     class Node;
   801     class Edge;
   501     class Edge;
   802 
   502 
   803     //  protected:
       
   804     // HELPME:
       
   805   protected:
       
   806     ///\bug It must be public because of SymEdgeMap.
       
   807     ///
       
   808     mutable std::vector<DynMapBase<Node> * > dyn_node_maps;
       
   809     //mutable std::vector<DynMapBase<Edge> * > dyn_edge_maps;
       
   810     
       
   811   public:
   503   public:
   812 
   504 
   813     class NodeIt;
   505     class NodeIt;
   814     class EdgeIt;
   506     class EdgeIt;
   815     class OutEdgeIt;
   507     class OutEdgeIt;
   816     class InEdgeIt;
   508     class InEdgeIt;
   817     
   509     
   818     template <typename T> class NodeMap;
   510     CREATE_MAP_REGISTRIES;
   819     template <typename T> class EdgeMap;
   511     CREATE_MAPS(ArrayMapFactory);
   820     
   512     
   821   public:
   513   public:
   822 
   514 
   823     ///Default constructor
   515     ///Default constructor
   824     NodeSet() : nodes(), first_node(-1),
   516     NodeSet() 
   825 		  first_free_node(-1) {}
   517       : nodes(), first_node(-1), first_free_node(-1) {}
   826     ///Copy constructor
   518     ///Copy constructor
   827     NodeSet(const NodeSet &_g) : nodes(_g.nodes), first_node(_g.first_node),
   519     NodeSet(const NodeSet &_g) 
   828 				     first_free_node(_g.first_free_node) {}
   520       : nodes(_g.nodes), first_node(_g.first_node),
   829     
   521 	first_free_node(_g.first_free_node) {}
   830     ~NodeSet()
   522     
   831     {
       
   832       for(std::vector<DynMapBase<Node> * >::iterator i=dyn_node_maps.begin();
       
   833 	  i!=dyn_node_maps.end(); ++i) (**i).G=NULL;
       
   834       //for(std::vector<DynMapBase<Edge> * >::iterator i=dyn_edge_maps.begin();
       
   835       //	  i!=dyn_edge_maps.end(); ++i) (**i).G=NULL;
       
   836     }
       
   837 
       
   838     int nodeNum() const { return nodes.size(); }  //FIXME: What is this?
   523     int nodeNum() const { return nodes.size(); }  //FIXME: What is this?
   839     int edgeNum() const { return 0; }  //FIXME: What is this?
   524     int edgeNum() const { return 0; }  //FIXME: What is this?
   840 
   525 
   841     ///\bug This function does something different than
   526     ///\bug This function does something different than
   842     ///its name would suggests...
   527     ///its name would suggests...
   885       nodes[n].first_in = nodes[n].first_out = -1;
   570       nodes[n].first_in = nodes[n].first_out = -1;
   886       
   571       
   887       Node nn; nn.n=n;
   572       Node nn; nn.n=n;
   888 
   573 
   889       //Update dynamic maps
   574       //Update dynamic maps
   890       for(std::vector<DynMapBase<Node> * >::iterator i=dyn_node_maps.begin();
   575       node_maps.add(nn);
   891 	  i!=dyn_node_maps.end(); ++i) (**i).add(nn);
       
   892 
   576 
   893       return nn;
   577       return nn;
   894     }
   578     }
   895     
   579     
   896     void erase(Node nn) {
   580     void erase(Node nn) {
   902       
   586       
   903       nodes[n].next = first_free_node;
   587       nodes[n].next = first_free_node;
   904       first_free_node = n;
   588       first_free_node = n;
   905 
   589 
   906       //Update dynamic maps
   590       //Update dynamic maps
   907       for(std::vector<DynMapBase<Node> * >::iterator i=dyn_node_maps.begin();
   591       node_maps.erase(nn);
   908 	  i!=dyn_node_maps.end(); ++i) (**i).erase(nn);
       
   909     }
   592     }
   910     
   593     
   911         
   594         
   912     Edge findEdge(Node u,Node v, Edge prev = INVALID) 
   595     Edge findEdge(Node u,Node v, Edge prev = INVALID) 
   913     {
   596     {
   914       return INVALID;
   597       return INVALID;
   915     }
   598     }
   916     
   599     
   917     ///\bug Dynamic maps must be updated!
       
   918     ///
       
   919     void clear() {
   600     void clear() {
       
   601       node_maps.clear();
   920       nodes.clear();
   602       nodes.clear();
   921       first_node = first_free_node = -1;
   603       first_node = first_free_node = -1;
   922     }
   604     }
   923 
   605 
   924     class Node {
   606     class Node {
  1010       InEdgeIt (Invalid i) : Edge(i) { }
   692       InEdgeIt (Invalid i) : Edge(i) { }
  1011       InEdgeIt(const NodeSet& G,Node v) :Edge() {}
   693       InEdgeIt(const NodeSet& G,Node v) :Edge() {}
  1012       InEdgeIt operator++() { return INVALID; }
   694       InEdgeIt operator++() { return INVALID; }
  1013     };
   695     };
  1014 
   696 
  1015     template <typename T> class NodeMap : public DynMapBase<Node>
       
  1016     {
       
  1017       std::vector<T> container;
       
  1018 
       
  1019     public:
       
  1020       typedef T ValueType;
       
  1021       typedef Node KeyType;
       
  1022 
       
  1023       NodeMap(const NodeSet &_G) :
       
  1024 	DynMapBase<Node>(_G), container(_G.maxNodeId())
       
  1025       {
       
  1026 	G->dyn_node_maps.push_back(this);
       
  1027       }
       
  1028       NodeMap(const NodeSet &_G,const T &t) :
       
  1029 	DynMapBase<Node>(_G), container(_G.maxNodeId(),t)
       
  1030       {
       
  1031 	G->dyn_node_maps.push_back(this);
       
  1032       }
       
  1033       
       
  1034       NodeMap(const NodeMap<T> &m) :
       
  1035  	DynMapBase<Node>(*m.G), container(m.container)
       
  1036       {
       
  1037  	G->dyn_node_maps.push_back(this);
       
  1038       }
       
  1039 
       
  1040       template<typename TT> friend class NodeMap;
       
  1041  
       
  1042       ///\todo It can copy between different types.
       
  1043       ///
       
  1044       template<typename TT> NodeMap(const NodeMap<TT> &m) :
       
  1045 	DynMapBase<Node>(*m.G), container(m.container.size())
       
  1046       {
       
  1047 	G->dyn_node_maps.push_back(this);
       
  1048 	typename std::vector<TT>::const_iterator i;
       
  1049 	for(typename std::vector<TT>::const_iterator i=m.container.begin();
       
  1050 	    i!=m.container.end();
       
  1051 	    i++)
       
  1052 	  container.push_back(*i);
       
  1053       }
       
  1054       ~NodeMap()
       
  1055       {
       
  1056 	if(G) {
       
  1057 	  std::vector<DynMapBase<Node>* >::iterator i;
       
  1058 	  for(i=G->dyn_node_maps.begin();
       
  1059 	      i!=G->dyn_node_maps.end() && *i!=this; ++i) ;
       
  1060 	  //if(*i==this) G->dyn_node_maps.erase(i); //FIXME: Way too slow...
       
  1061 	  //A better way to do that: (Is this really important?)
       
  1062 	  if(*i==this) {
       
  1063 	    *i=G->dyn_node_maps.back();
       
  1064 	    G->dyn_node_maps.pop_back();
       
  1065 	  }
       
  1066 	}
       
  1067       }
       
  1068 
       
  1069       void add(const Node k) 
       
  1070       {
       
  1071 	if(k.n>=int(container.size())) container.resize(k.n+1);
       
  1072       }
       
  1073 
       
  1074       void erase(const Node) { }
       
  1075       
       
  1076       void set(Node n, T a) { container[n.n]=a; }
       
  1077       //'T& operator[](Node n)' would be wrong here
       
  1078       typename std::vector<T>::reference
       
  1079       operator[](Node n) { return container[n.n]; }
       
  1080       //'const T& operator[](Node n)' would be wrong here
       
  1081       typename std::vector<T>::const_reference 
       
  1082       operator[](Node n) const { return container[n.n]; }
       
  1083 
       
  1084       ///\warning There is no safety check at all!
       
  1085       ///Using operator = between maps attached to different graph may
       
  1086       ///cause serious problem.
       
  1087       ///\todo Is this really so?
       
  1088       ///\todo It can copy between different types.
       
  1089       const NodeMap<T>& operator=(const NodeMap<T> &m)
       
  1090       {
       
  1091 	container = m.container;
       
  1092 	return *this;
       
  1093       }
       
  1094       template<typename TT>
       
  1095       const NodeMap<T>& operator=(const NodeMap<TT> &m)
       
  1096       {
       
  1097 	std::copy(m.container.begin(), m.container.end(), container.begin());
       
  1098 	return *this;
       
  1099       }
       
  1100       
       
  1101       void update() {}    //Useless for Dynamic Maps
       
  1102       void update(T a) {}  //Useless for Dynamic Maps
       
  1103     };
       
  1104     
       
  1105     template <typename T> class EdgeMap
       
  1106     {
       
  1107     public:
       
  1108       typedef T ValueType;
       
  1109       typedef Edge KeyType;
       
  1110 
       
  1111       EdgeMap(const NodeSet &) { }
       
  1112       EdgeMap(const NodeSet &,const T &) { }
       
  1113       EdgeMap(const EdgeMap<T> &) { }
       
  1114       //      template<typename TT> friend class EdgeMap;
       
  1115 
       
  1116       ///\todo It can copy between different types.
       
  1117       ///
       
  1118       template<typename TT> EdgeMap(const EdgeMap<TT> &) { }
       
  1119       ~EdgeMap() { }
       
  1120 
       
  1121       void add(const Edge  ) { }
       
  1122       void erase(const Edge) { }
       
  1123       
       
  1124       void set(Edge, T) { }
       
  1125       //T get(Edge n) const { return container[n.n]; }
       
  1126       ValueType &operator[](Edge) { return *((T*)(NULL)); }
       
  1127       const ValueType &operator[](Edge) const { return *((T*)(NULL)); }
       
  1128 
       
  1129       const EdgeMap<T>& operator=(const EdgeMap<T> &) { return *this; }
       
  1130     
       
  1131       template<typename TT>
       
  1132       const EdgeMap<T>& operator=(const EdgeMap<TT> &m) { return *this; }
       
  1133       
       
  1134       void update() {}
       
  1135       void update(T a) {}
       
  1136     };
       
  1137   };
   697   };
  1138 
   698 
  1139 
   699 
  1140 
   700 
  1141   ///Graph structure using a node set of another graph.
   701   ///Graph structure using a node set of another graph.
  1164     typedef GG NodeGraphType;
   724     typedef GG NodeGraphType;
  1165 
   725 
  1166     NodeGraphType &G;
   726     NodeGraphType &G;
  1167 
   727 
  1168   public:
   728   public:
       
   729 
  1169     class Node;
   730     class Node;
  1170     class Edge;
   731     class Edge;
  1171     class OutEdgeIt;
   732     class OutEdgeIt;
  1172     class InEdgeIt;
   733     class InEdgeIt;
  1173     class SymEdge;
   734     class SymEdge;
       
   735 
       
   736     typedef EdgeSet Graph;
       
   737 
  1174     int id(Node v) const; 
   738     int id(Node v) const; 
  1175 
   739 
  1176     class Node : public NodeGraphType::Node {
   740     class Node : public NodeGraphType::Node {
  1177       friend class EdgeSet;
   741       friend class EdgeSet;
  1178       //      template <typename T> friend class NodeMap;
   742       //      template <typename T> friend class NodeMap;
  1227     
   791     
  1228     std::vector<EdgeT> edges;
   792     std::vector<EdgeT> edges;
  1229     //The first free edge
   793     //The first free edge
  1230     int first_free_edge;
   794     int first_free_edge;
  1231     
   795     
  1232   protected:
   796   public:
  1233     
       
  1234     template <typename Key> class DynMapBase
       
  1235     {
       
  1236     protected:
       
  1237       const EdgeSet* G; 
       
  1238     public:
       
  1239       virtual void add(const Key k) = 0;
       
  1240       virtual void erase(const Key k) = 0;
       
  1241       DynMapBase(const EdgeSet &_G) : G(&_G) {}
       
  1242       virtual ~DynMapBase() {}
       
  1243       friend class EdgeSet;
       
  1244     };
       
  1245     
       
  1246   public:
       
  1247     //template <typename T> class NodeMap;
       
  1248     template <typename T> class EdgeMap;
       
  1249     
   797     
  1250     class Node;
   798     class Node;
  1251     class Edge;
   799     class Edge;
  1252 
       
  1253     //  protected:
       
  1254     // HELPME:
       
  1255   protected:
       
  1256     // mutable std::vector<DynMapBase<Node> * > dyn_node_maps;
       
  1257     ///\bug It must be public because of SymEdgeMap.
       
  1258     ///
       
  1259     mutable std::vector<DynMapBase<Edge> * > dyn_edge_maps;
       
  1260     
       
  1261   public:
       
  1262 
   800 
  1263     class NodeIt;
   801     class NodeIt;
  1264     class EdgeIt;
   802     class EdgeIt;
  1265     class OutEdgeIt;
   803     class OutEdgeIt;
  1266     class InEdgeIt;
   804     class InEdgeIt;
  1267     
   805 
  1268     template <typename T> class NodeMap;
   806 
  1269     template <typename T> class EdgeMap;
   807     CREATE_EDGE_MAP_REGISTRY;
       
   808     CREATE_EDGE_MAP_FACTORY(ArrayMapFactory);
       
   809     IMPORT_EDGE_MAP(EdgeMapFactory);
       
   810     
  1270     
   811     
  1271   public:
   812   public:
  1272 
   813 
  1273     ///Constructor
   814     ///Constructor
  1274     
   815     
  1275     ///Construates a new graph based on the nodeset of an existing one.
   816     ///Construates a new graph based on the nodeset of an existing one.
  1276     ///\param _G the base graph.
   817     ///\param _G the base graph.
  1277     ///\todo It looks like a copy constructor, but it isn't.
   818     ///\todo It looks like a copy constructor, but it isn't.
  1278     EdgeSet(NodeGraphType &_G) : G(_G),
   819     EdgeSet(NodeGraphType &_G) 
  1279 				 nodes(_G), edges(),
   820       : G(_G), nodes(_G), edges(),
  1280 				 first_free_edge(-1) { }
   821 	first_free_edge(-1) {}
  1281     ///Copy constructor
   822     ///Copy constructor
  1282 
   823 
  1283     ///Makes a copy of an EdgeSet.
   824     ///Makes a copy of an EdgeSet.
  1284     ///It will be based on the same graph.
   825     ///It will be based on the same graph.
  1285     EdgeSet(const EdgeSet &_g) : G(_g.G), nodes(_g.G), edges(_g.edges),
   826     EdgeSet(const EdgeSet &_g) 
  1286 				 first_free_edge(_g.first_free_edge) { }
   827       : G(_g.G), nodes(_g.G), edges(_g.edges),
  1287     
   828 	first_free_edge(_g.first_free_edge) {}
  1288     ~EdgeSet()
   829     
  1289     {
       
  1290       // for(std::vector<DynMapBase<Node> * >::iterator i=dyn_node_maps.begin();
       
  1291       //  i!=dyn_node_maps.end(); ++i) (**i).G=NULL;
       
  1292       for(typename std::vector<DynMapBase<Edge> * >::iterator
       
  1293 	    i=dyn_edge_maps.begin();
       
  1294 	  i!=dyn_edge_maps.end(); ++i) (**i).G=NULL;
       
  1295     }
       
  1296 
       
  1297     int nodeNum() const { return G.nodeNum(); }  //FIXME: What is this?
   830     int nodeNum() const { return G.nodeNum(); }  //FIXME: What is this?
  1298     int edgeNum() const { return edges.size(); }  //FIXME: What is this?
   831     int edgeNum() const { return edges.size(); }  //FIXME: What is this?
  1299 
   832 
  1300     ///\bug This function does something different than
   833     ///\bug This function does something different than
  1301     ///its name would suggests...
   834     ///its name would suggests...
  1345       nodes[u].first_out = nodes[v].first_in = n;
   878       nodes[u].first_out = nodes[v].first_in = n;
  1346 
   879 
  1347       Edge e; e.n=n;
   880       Edge e; e.n=n;
  1348 
   881 
  1349       //Update dynamic maps
   882       //Update dynamic maps
  1350       for(typename std::vector<DynMapBase<Edge> * >::iterator
   883       edge_maps.add(e);
  1351 	    i=dyn_edge_maps.begin();
       
  1352 	  i!=dyn_edge_maps.end(); ++i) (**i).add(e);
       
  1353 
   884 
  1354       return e;
   885       return e;
  1355     }
   886     }
  1356 
   887 
  1357     /// Finds an edge between two nodes.
   888     /// Finds an edge between two nodes.
  1387       
   918       
  1388       edges[n].next_in = first_free_edge;
   919       edges[n].next_in = first_free_edge;
  1389       first_free_edge = -1;      
   920       first_free_edge = -1;      
  1390 
   921 
  1391       //Update dynamic maps
   922       //Update dynamic maps
  1392       Edge e; e.n=n;
   923       Edge e; e.n = n;
  1393       for(typename std::vector<DynMapBase<Edge> * >::iterator
   924       edge_maps.erase(e);
  1394 	    i=dyn_edge_maps.begin();
       
  1395 	  i!=dyn_edge_maps.end(); ++i) (**i).erase(e);
       
  1396     }
   925     }
  1397       
   926       
  1398   public:
   927   public:
  1399 
   928 
  1400 //     void erase(Node nn) {
   929 //     void erase(Node nn) {
  1406     
   935     
  1407     void erase(Edge e) { eraseEdge(e.n); }
   936     void erase(Edge e) { eraseEdge(e.n); }
  1408 
   937 
  1409     ///Clear all edges. (Doesn't clear the nodes!)
   938     ///Clear all edges. (Doesn't clear the nodes!)
  1410     void clear() {
   939     void clear() {
       
   940       edge_maps.clear();
  1411       edges.clear();
   941       edges.clear();
  1412       first_free_edge=-1;
   942       first_free_edge=-1;
  1413     }
   943     }
  1414 
   944 
  1415 
   945 
  1416 //     //\bug Dynamic maps must be updated!
       
  1417 //     //
       
  1418 //     void clear() {
       
  1419 //       nodes.clear();edges.clear();
       
  1420 //       first_node=first_free_node=first_free_edge=-1;
       
  1421 //     }
       
  1422 
       
  1423   public:
       
  1424     template <typename T> class EdgeMap;
       
  1425     
       
  1426     ///
       
  1427     class Edge {
   946     class Edge {
  1428     public:
   947     public:
  1429       friend class EdgeSet;
   948       friend class EdgeSet;
  1430       template <typename T> friend class EdgeMap;
   949       template <typename T> friend class EdgeMap;
  1431 
   950 
  1488       OutEdgeIt (Invalid i) : Edge(i) { }
  1007       OutEdgeIt (Invalid i) : Edge(i) { }
  1489       OutEdgeIt(const EdgeSet& _G, Edge e) : Edge(e), G(&_G) { }
  1008       OutEdgeIt(const EdgeSet& _G, Edge e) : Edge(e), G(&_G) { }
  1490 
  1009 
  1491       OutEdgeIt(const EdgeSet& _G,const Node v) :
  1010       OutEdgeIt(const EdgeSet& _G,const Node v) :
  1492 	Edge(_G.nodes[v].first_out), G(&_G) { }
  1011 	Edge(_G.nodes[v].first_out), G(&_G) { }
  1493       OutEdgeIt &operator++() { n=G->edges[n].next_out; return *this; }
  1012       OutEdgeIt &operator++() { n = G->edges[n].next_out; return *this; }
  1494     };
  1013     };
  1495     
  1014     
  1496     class InEdgeIt : public Edge {
  1015     class InEdgeIt : public Edge {
  1497       const EdgeSet *G;
  1016       const EdgeSet *G;
  1498       friend class EdgeSet;
  1017       friend class EdgeSet;
  1503       InEdgeIt(const EdgeSet& _G,Node v)
  1022       InEdgeIt(const EdgeSet& _G,Node v)
  1504 	: Edge(_G.nodes[v].first_in), G(&_G) { }
  1023 	: Edge(_G.nodes[v].first_in), G(&_G) { }
  1505       InEdgeIt &operator++() { n=G->edges[n].next_in; return *this; }
  1024       InEdgeIt &operator++() { n=G->edges[n].next_in; return *this; }
  1506     };
  1025     };
  1507 
  1026 
  1508     template <typename T> class NodeMap : 
  1027     
  1509       public NodeGraphType::template NodeMap<T>
  1028     template <typename V> class NodeMap 
       
  1029       : public NodeGraphType::template NodeMap<V>
  1510     {
  1030     {
  1511       //This is a must, the constructors need it.
  1031       //This is a must, the constructors need it.
  1512       typedef typename NodeGraphType::template NodeMap<T> ParentNodeMap;
  1032       typedef typename NodeGraphType::template NodeMap<V> MapImpl;
  1513     public:
  1033       typedef V Value;
  1514       NodeMap(const EdgeSet &_G) : ParentNodeMap(_G.G) { }
  1034     public:
  1515       NodeMap(const EdgeSet &_G,const T &t) : ParentNodeMap(_G.G,t) { }
  1035       NodeMap() : MapImpl() {}
  1516       //It is unnecessary
  1036       
  1517       NodeMap(const typename NodeGraphType::template NodeMap<T> &m) :
  1037       NodeMap(const EdgeSet& graph) 
  1518 	ParentNodeMap(m) { }
  1038 	: MapImpl(graph.G) { }
  1519 
  1039 
  1520       ///\todo It can copy between different types.
  1040       NodeMap(const EdgeSet& graph, const Value& value) 
  1521       ///
  1041 	: MapImpl(graph.G, value) { }
  1522       template<typename TT>
  1042 
  1523       NodeMap(const typename NodeGraphType::template NodeMap<TT> &m)
  1043       NodeMap(const NodeMap& copy) 
  1524 	: ParentNodeMap(m) { }
  1044 	: MapImpl(static_cast<const MapImpl&>(copy)) {}
  1525     };
  1045 
  1526     
  1046       template<typename CMap>
  1527     ///
  1047       NodeMap(const CMap& copy)
  1528     template <typename T> class EdgeMap : public DynMapBase<Edge>
  1048 	: MapImpl(copy) { }
  1529     {
  1049 
  1530     protected:
  1050       NodeMap& operator=(const NodeMap& copy) {
  1531     public:
  1051 	MapImpl::operator=(static_cast<const MapImpl&>(copy));
  1532       ///\bug It should be at least protected
       
  1533       ///
       
  1534       std::vector<T> container;
       
  1535 
       
  1536     public:
       
  1537       typedef T ValueType;
       
  1538       typedef Edge KeyType;
       
  1539 
       
  1540       EdgeMap(const EdgeSet &_G) :
       
  1541 	DynMapBase<Edge>(_G), container(_G.maxEdgeId())
       
  1542       {
       
  1543 	//FIXME: What if there are empty Id's?
       
  1544 	//FIXME: Can I use 'this' in a constructor?
       
  1545 	this->G->dyn_edge_maps.push_back(this);
       
  1546       }
       
  1547       EdgeMap(const EdgeSet &_G,const T &t) :
       
  1548 	DynMapBase<Edge>(_G), container(_G.maxEdgeId(),t)
       
  1549       {
       
  1550 	this->G->dyn_edge_maps.push_back(this);
       
  1551       } 
       
  1552       EdgeMap(const EdgeMap<T> &m) :
       
  1553  	DynMapBase<Edge>(*m.G), container(m.container)
       
  1554       {
       
  1555  	this->G->dyn_edge_maps.push_back(this);
       
  1556       }
       
  1557 
       
  1558       ///\todo It can copy between different types.
       
  1559       ///
       
  1560       template<typename TT> EdgeMap(const EdgeMap<TT> &m) :
       
  1561 	DynMapBase<Edge>(*m.G), container(m.container.size())
       
  1562       {
       
  1563 	this->G->dyn_edge_maps.push_back(this);
       
  1564 	typename std::vector<TT>::const_iterator i;
       
  1565 	for(typename std::vector<TT>::const_iterator i=m.container.begin();
       
  1566 	    i!=m.container.end();
       
  1567 	    i++)
       
  1568 	  container.push_back(*i);
       
  1569       }
       
  1570       ~EdgeMap()
       
  1571       {
       
  1572 	if(this->G) {
       
  1573 	  typename std::vector<DynMapBase<Edge>* >::iterator i;
       
  1574 	  for(i=this->G->dyn_edge_maps.begin();
       
  1575 	      i!=this->G->dyn_edge_maps.end() && *i!=this; ++i) ;
       
  1576 	  //if(*i==this) G->dyn_edge_maps.erase(i); //Way too slow...
       
  1577 	  //A better way to do that: (Is this really important?)
       
  1578 	  if(*i==this) {
       
  1579 	    *i=this->G->dyn_edge_maps.back();
       
  1580 	    this->G->dyn_edge_maps.pop_back();
       
  1581 	  }
       
  1582 	}
       
  1583       }
       
  1584       
       
  1585       void add(const Edge k) 
       
  1586       {
       
  1587 	if(k.n>=int(container.size())) container.resize(k.n+1);
       
  1588       }
       
  1589       void erase(const Edge) { }
       
  1590       
       
  1591       ///\bug This doesn't work. Why?
       
  1592       ///      void set(Edge n, T a) { container[n.n]=a; }
       
  1593       void set(Edge n, T a) { container[this->G->id(n)]=a; }
       
  1594       //T get(Edge n) const { return container[n.n]; }
       
  1595       typename std::vector<T>::reference
       
  1596       ///\bug This doesn't work. Why?
       
  1597       ///      operator[](Edge n) { return container[n.n]; }
       
  1598       operator[](Edge n) { return container[this->G->id(n)]; }
       
  1599       typename std::vector<T>::const_reference
       
  1600       ///\bug This doesn't work. Why?
       
  1601       ///      operator[](Edge n) const { return container[n.n]; }
       
  1602       operator[](Edge n) const { return container[this->G->id(n)]; }
       
  1603 
       
  1604       ///\warning There is no safety check at all!
       
  1605       ///Using operator = between maps attached to different graph may
       
  1606       ///cause serious problem.
       
  1607       ///\todo Is this really so?
       
  1608       ///\todo It can copy between different types.
       
  1609       const EdgeMap<T>& operator=(const EdgeMap<T> &m)
       
  1610       {
       
  1611 	container = m.container;
       
  1612 	return *this;
  1052 	return *this;
  1613       }
  1053       }
  1614       
  1054 
  1615       template<typename TT> friend class EdgeMap;
  1055       template <typename CMap>
  1616 
  1056       NodeMap& operator=(const CMap& copy) {
  1617       template<typename TT>
  1057 	MapImpl::operator=(copy);
  1618       const EdgeMap<T>& operator=(const EdgeMap<TT> &m)
       
  1619       {
       
  1620 	std::copy(m.container.begin(), m.container.end(), container.begin());
       
  1621 	return *this;
  1058 	return *this;
  1622       }
  1059       }
  1623       
  1060 
  1624       void update() {}    //Useless for DynMaps
  1061     };
  1625       void update(T a) {}  //Useless for DynMaps
       
  1626     };
       
  1627 
       
  1628   };
  1062   };
  1629 
  1063 
  1630   template<typename GG>
  1064   template<typename GG>
  1631   inline int EdgeSet<GG>::id(Node v) const { return G.id(v); }
  1065   inline int EdgeSet<GG>::id(Node v) const { return G.id(v); }
  1632 
  1066