lemon/edge_set.h
changeset 2621 814ba94d9989
parent 2553 bfced05fa852
equal deleted inserted replaced
24:655e19c23943 25:54d8f49f428c
   152     }
   152     }
   153 
   153 
   154     void first(Edge& edge) const {
   154     void first(Edge& edge) const {
   155       Node node;
   155       Node node;
   156       for (first(node); node != INVALID && (*nodes)[node].first_in == -1; 
   156       for (first(node); node != INVALID && (*nodes)[node].first_in == -1; 
   157 	   next(node));
   157 	   next(node)) { }
   158       edge.id = (node == INVALID) ? -1 : (*nodes)[node].first_in;
   158       edge.id = (node == INVALID) ? -1 : (*nodes)[node].first_in;
   159     }
   159     }
   160 
   160 
   161     void next(Edge& edge) const {
   161     void next(Edge& edge) const {
   162       if (edges[edge.id].next_in != -1) {
   162       if (edges[edge.id].next_in != -1) {
   163 	edge.id = edges[edge.id].next_in;
   163 	edge.id = edges[edge.id].next_in;
   164       } else {
   164       } else {
   165 	Node node = edges[edge.id].target;
   165 	Node node = edges[edge.id].target;
   166 	for (next(node); node != INVALID && (*nodes)[node].first_in == -1; 
   166 	for (next(node); node != INVALID && (*nodes)[node].first_in == -1; 
   167 	     next(node));
   167 	     next(node)) { }
   168 	edge.id = (node == INVALID) ? -1 : (*nodes)[node].first_in;
   168 	edge.id = (node == INVALID) ? -1 : (*nodes)[node].first_in;
   169       }      
   169       }      
   170     }
   170     }
   171 
   171 
   172     void firstOut(Edge& edge, const Node& node) const {
   172     void firstOut(Edge& edge, const Node& node) const {