src/lemon/graph_utils.h
changeset 1274 5676e48ca026
parent 1192 aa4483befa56
child 1359 1581f961cfaa
equal deleted inserted replaced
9:60d86f1ca77f 10:01f29aa13c28
    19 
    19 
    20 #include <iterator>
    20 #include <iterator>
    21 
    21 
    22 #include <lemon/invalid.h>
    22 #include <lemon/invalid.h>
    23 #include <lemon/utility.h>
    23 #include <lemon/utility.h>
    24 #include <lemon/map_utils.h>
       
    25 
    24 
    26 ///\ingroup gutils
    25 ///\ingroup gutils
    27 ///\file
    26 ///\file
    28 ///\brief Graph utilities.
    27 ///\brief Graph utilities.
    29 ///
    28 ///
    32 ///
    31 ///
    33 
    32 
    34 
    33 
    35 namespace lemon {
    34 namespace lemon {
    36 
    35 
    37 /// \addtogroup gutils
    36   /// \addtogroup gutils
    38 /// @{
    37   /// @{
    39 
    38 
    40   /// \brief Function to count the items in the graph.
    39   /// \brief Function to count the items in the graph.
    41   ///
    40   ///
    42   /// This function counts the items in the graph.
    41   /// This function counts the items in the graph.
    43   /// The complexity of the function is O(n) because
    42   /// The complexity of the function is O(n) because
   158   /// \todo We may want to use the \ref concept::GraphBase "GraphBase"
   157   /// \todo We may want to use the \ref concept::GraphBase "GraphBase"
   159   /// interface here...
   158   /// interface here...
   160   /// \bug Untested ...
   159   /// \bug Untested ...
   161   template <typename Graph>
   160   template <typename Graph>
   162   typename Graph::Edge findEdge(const Graph &g,
   161   typename Graph::Edge findEdge(const Graph &g,
   163 		typename Graph::Node u, typename Graph::Node v,
   162 				typename Graph::Node u, typename Graph::Node v,
   164 		typename Graph::Edge prev = INVALID) 
   163 				typename Graph::Edge prev = INVALID) 
   165   {
   164   {
   166     typename Graph::OutEdgeIt e(g,prev);
   165     typename Graph::OutEdgeIt e(g,prev);
   167     //    if(prev==INVALID) g.first(e,u);
   166     //    if(prev==INVALID) g.first(e,u);
   168     if(prev==INVALID) e=typename Graph::OutEdgeIt(g,u);
   167     if(prev==INVALID) e=typename Graph::OutEdgeIt(g,u);
   169     else ++e;
   168     else ++e;
   223 		 NodeBijection& _nb, EdgeBijection& _eb) {
   222 		 NodeBijection& _nb, EdgeBijection& _eb) {
   224     nodeCopy(_d, _s, _nb);
   223     nodeCopy(_d, _s, _nb);
   225     edgeCopy(_d, _s, _nb, _eb);
   224     edgeCopy(_d, _s, _nb, _eb);
   226   }
   225   }
   227  
   226  
   228    template <
   227   template <
   229     typename _DestinationGraph, 
   228     typename _DestinationGraph, 
   230     typename _SourceGraph, 
   229     typename _SourceGraph, 
   231     typename _NodeBijection 
   230     typename _NodeBijection 
   232     =typename _SourceGraph::template NodeMap<typename _DestinationGraph::Node>,
   231     =typename _SourceGraph::template NodeMap<typename _DestinationGraph::Node>,
   233     typename _EdgeBijection 
   232     typename _EdgeBijection 
   234     =typename _SourceGraph::template EdgeMap<typename _DestinationGraph::Edge>
   233     = typename _SourceGraph::template EdgeMap<typename _DestinationGraph::Edge>
   235    >
   234   >
   236    class GraphCopy {
   235   class GraphCopy {
   237    public:
   236   public:
   238 
   237     
   239      typedef _DestinationGraph DestinationGraph;
   238     typedef _DestinationGraph DestinationGraph;
   240      typedef _SourceGraph SourceGraph;
   239     typedef _SourceGraph SourceGraph;
   241 
   240 
   242      typedef _NodeBijection NodeBijection;
   241     typedef _NodeBijection NodeBijection;
   243      typedef _EdgeBijection EdgeBijection;
   242     typedef _EdgeBijection EdgeBijection;
   244 
   243     
   245    protected:          
   244   protected:          
   246 
   245     
   247      NodeBijection node_bijection;
   246     NodeBijection node_bijection;
   248      EdgeBijection edge_bijection;     
   247     EdgeBijection edge_bijection;     
   249 
   248 
   250    public:
   249   public:
   251      
   250      
   252      GraphCopy(DestinationGraph& _d, const SourceGraph& _s) {
   251     GraphCopy(DestinationGraph& _d, const SourceGraph& _s) {
   253        copyGraph(_d, _s, node_bijection, edge_bijection);
   252       copyGraph(_d, _s, node_bijection, edge_bijection);
   254      }
   253     }
   255 
   254     
   256      const NodeBijection& getNodeBijection() const {
   255     const NodeBijection& getNodeBijection() const {
   257        return node_bijection;
   256       return node_bijection;
   258      }
   257     }
   259 
   258 
   260      const EdgeBijection& getEdgeBijection() const {
   259     const EdgeBijection& getEdgeBijection() const {
   261        return edge_bijection;
   260       return edge_bijection;
   262      }
   261     }
   263      
   262      
   264    };
   263   };
       
   264 
       
   265 
       
   266   template <typename _Graph, typename _Item>
       
   267   class ItemSetTraits {
       
   268   };
   265   
   269   
   266   template <typename _Graph>
   270   template <typename _Graph>
   267   class GraphNodeSet {
   271   class ItemSetTraits<_Graph, typename _Graph::Node> {
   268   public:
   272   public:
   269     
   273     
   270     typedef _Graph Graph;
   274     typedef _Graph Graph;
   271 
   275 
   272     typedef typename Graph::Node Item;
   276     typedef typename Graph::Node Item;
   281       Map(const Graph& _graph) : Parent(_graph) {}
   285       Map(const Graph& _graph) : Parent(_graph) {}
   282       Map(const Graph& _graph, const Value& _value) 
   286       Map(const Graph& _graph, const Value& _value) 
   283 	: Parent(_graph, _value) {}
   287 	: Parent(_graph, _value) {}
   284     };
   288     };
   285 
   289 
   286     typedef IdMap<Graph, Item> IdMap;
       
   287     
       
   288   private:
       
   289     Graph* graph;
       
   290   };
   290   };
   291 
   291 
   292   template <typename _Graph>
   292   template <typename _Graph>
   293   class GraphEdgeSet {
   293   class ItemSetTraits<_Graph, typename _Graph::Edge> {
   294   public:
   294   public:
   295     
   295     
   296     typedef _Graph Graph;
   296     typedef _Graph Graph;
   297 
   297 
   298     typedef typename Graph::Edge Item;
   298     typedef typename Graph::Edge Item;
   307       Map(const Graph& _graph) : Parent(_graph) {}
   307       Map(const Graph& _graph) : Parent(_graph) {}
   308       Map(const Graph& _graph, const Value& _value) 
   308       Map(const Graph& _graph, const Value& _value) 
   309 	: Parent(_graph, _value) {}
   309 	: Parent(_graph, _value) {}
   310     };
   310     };
   311 
   311 
   312     typedef IdMap<Graph, Item> IdMap;
   312   };
   313     
   313 
   314   private:
   314   template <typename _Graph>
   315     Graph* graph;
   315   class ItemSetTraits<_Graph, typename _Graph::UndirEdge> {
   316   };
   316   public:
   317 
   317     
       
   318     typedef _Graph Graph;
       
   319 
       
   320     typedef typename Graph::UndirEdge Item;
       
   321     typedef typename Graph::UndirEdgeIt ItemIt;
       
   322 
       
   323     template <typename _Value>
       
   324     class Map : public Graph::template UndirEdgeMap<_Value> {
       
   325     public:
       
   326       typedef typename Graph::template UndirEdgeMap<_Value> Parent; 
       
   327       typedef typename Parent::Value Value;
       
   328 
       
   329       Map(const Graph& _graph) : Parent(_graph) {}
       
   330       Map(const Graph& _graph, const Value& _value) 
       
   331 	: Parent(_graph, _value) {}
       
   332     };
       
   333 
       
   334   };
   318 
   335 
   319   /// @}
   336   /// @}
   320   
   337   
   321 } //END OF NAMESPACE LEMON
   338 } //END OF NAMESPACE LEMON
   322 
   339