diff -r ee5959aa4410 -r c280de819a73 src/work/marci/experiment/bfs_iterator.h
--- a/src/work/marci/experiment/bfs_iterator.h	Sun Apr 17 18:57:22 2005 +0000
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,841 +0,0 @@
-// -*- c++ -*-
-#ifndef LEMON_BFS_ITERATOR_H
-#define LEMON_BFS_ITERATOR_H
-
-#include <queue>
-#include <stack>
-#include <utility>
-#include <graph_wrapper.h>
-
-namespace lemon {
-
-//   template <typename Graph>
-//   struct bfs {
-//     typedef typename Graph::Node Node;
-//     typedef typename Graph::Edge Edge;
-//     typedef typename Graph::NodeIt NodeIt;
-//     typedef typename Graph::OutEdgeIt OutEdgeIt;
-//     Graph& G;
-//     Node s;
-//     typename Graph::NodeMap<bool> reached;
-//     typename Graph::NodeMap<Edge> pred;
-//     typename Graph::NodeMap<int> dist;
-//     std::queue<Node> bfs_queue;
-//     bfs(Graph& _G, Node _s) : G(_G), s(_s), reached(_G), pred(_G), dist(_G) { 
-//       bfs_queue.push(s); 
-//       for(NodeIt i=G.template first<NodeIt>(); i.valid(); ++i) 
-// 	reached.set(i, false);
-//       reached.set(s, true);
-//       dist.set(s, 0); 
-//     }
-    
-//     void run() {
-//       while (!bfs_queue.empty()) {
-// 	Node v=bfs_queue.front();
-// 	OutEdgeIt e=G.template first<OutEdgeIt>(v);
-// 	bfs_queue.pop();
-// 	for( ; e.valid(); ++e) {
-// 	  Node w=G.bNode(e);
-// 	  std::cout << "scan node " << G.id(w) << " from node " << G.id(v) << std::endl;
-// 	  if (!reached.get(w)) {
-// 	    std::cout << G.id(w) << " is newly reached :-)" << std::endl;
-// 	    bfs_queue.push(w);
-// 	    dist.set(w, dist.get(v)+1);
-// 	    pred.set(w, e);
-// 	    reached.set(w, true);
-// 	  } else {
-// 	    std::cout << G.id(w) << " is already reached" << std::endl;
-// 	  }
-// 	}
-//       }
-//     }
-//   };
-
-//   template <typename Graph> 
-//   struct bfs_visitor {
-//     typedef typename Graph::Node Node;
-//     typedef typename Graph::Edge Edge;
-//     typedef typename Graph::OutEdgeIt OutEdgeIt;
-//     Graph& G;
-//     bfs_visitor(Graph& _G) : G(_G) { }
-//     void at_previously_reached(OutEdgeIt& e) { 
-//       //Node v=G.aNode(e);
-//       Node w=G.bNode(e);
-//       std::cout << G.id(w) << " is already reached" << std::endl;
-//    }
-//     void at_newly_reached(OutEdgeIt& e) { 
-//       //Node v=G.aNode(e);
-//       Node w=G.bNode(e);
-//       std::cout << G.id(w) << " is newly reached :-)" << std::endl;
-//     }
-//   };
-
-//   template <typename Graph, typename ReachedMap, typename visitor_type>
-//   struct bfs_iterator {
-//     typedef typename Graph::Node Node;
-//     typedef typename Graph::Edge Edge;
-//     typedef typename Graph::OutEdgeIt OutEdgeIt;
-//     Graph& G;
-//     std::queue<OutEdgeIt>& bfs_queue;
-//     ReachedMap& reached;
-//     visitor_type& visitor;
-//     void process() {
-//       while ( !bfs_queue.empty() && !bfs_queue.front().valid() ) { bfs_queue.pop(); } 
-//       if (bfs_queue.empty()) return;
-//       OutEdgeIt e=bfs_queue.front();
-//       //Node v=G.aNode(e);
-//       Node w=G.bNode(e);
-//       if (!reached.get(w)) {
-// 	visitor.at_newly_reached(e);
-// 	bfs_queue.push(G.template first<OutEdgeIt>(w));
-// 	reached.set(w, true);
-//       } else {
-// 	visitor.at_previously_reached(e);
-//       }
-//     }
-//     bfs_iterator(Graph& _G, std::queue<OutEdgeIt>& _bfs_queue, ReachedMap& _reached, visitor_type& _visitor) : G(_G), bfs_queue(_bfs_queue), reached(_reached), visitor(_visitor) { 
-//       //while ( !bfs_queue.empty() && !bfs_queue.front().valid() ) { bfs_queue.pop(); } 
-//       valid();
-//     }
-//     bfs_iterator<Graph, ReachedMap, visitor_type>& operator++() { 
-//       //while ( !bfs_queue.empty() && !bfs_queue.front().valid() ) { bfs_queue.pop(); } 
-//       //if (bfs_queue.empty()) return *this;
-//       if (!valid()) return *this;
-//       ++(bfs_queue.front());
-//       //while ( !bfs_queue.empty() && !bfs_queue.front().valid() ) { bfs_queue.pop(); } 
-//       valid();
-//       return *this;
-//     }
-//     //void next() { 
-//     //  while ( !bfs_queue.empty() && !bfs_queue.front().valid() ) { bfs_queue.pop(); } 
-//     //  if (bfs_queue.empty()) return;
-//     //  ++(bfs_queue.front());
-//     //  while ( !bfs_queue.empty() && !bfs_queue.front().valid() ) { bfs_queue.pop(); } 
-//     //}
-//     bool valid() { 
-//       while ( !bfs_queue.empty() && !bfs_queue.front().valid() ) { bfs_queue.pop(); } 
-//       if (bfs_queue.empty()) return false; else return true;
-//     }
-//     //bool finished() { 
-//     //  while ( !bfs_queue.empty() && !bfs_queue.front().valid() ) { bfs_queue.pop(); } 
-//     //  if (bfs_queue.empty()) return true; else return false;
-//     //}
-//     operator Edge () { return bfs_queue.front(); }
-
-//   };
-
-//   template <typename Graph, typename ReachedMap>
-//   struct bfs_iterator1 {
-//     typedef typename Graph::Node Node;
-//     typedef typename Graph::Edge Edge;
-//     typedef typename Graph::OutEdgeIt OutEdgeIt;
-//     Graph& G;
-//     std::queue<OutEdgeIt>& bfs_queue;
-//     ReachedMap& reached;
-//     bool _newly_reached;
-//     bfs_iterator1(Graph& _G, std::queue<OutEdgeIt>& _bfs_queue, ReachedMap& _reached) : G(_G), bfs_queue(_bfs_queue), reached(_reached) { 
-//       valid();
-//       if (!bfs_queue.empty() && bfs_queue.front().valid()) { 
-// 	OutEdgeIt e=bfs_queue.front();
-// 	Node w=G.bNode(e);
-// 	if (!reached.get(w)) {
-// 	  bfs_queue.push(G.template first<OutEdgeIt>(w));
-// 	  reached.set(w, true);
-// 	  _newly_reached=true;
-// 	} else {
-// 	  _newly_reached=false;
-// 	}
-//       }
-//     }
-//     bfs_iterator1<Graph, ReachedMap>& operator++() { 
-//       if (!valid()) return *this;
-//       ++(bfs_queue.front());
-//       valid();
-//       if (!bfs_queue.empty() && bfs_queue.front().valid()) { 
-// 	OutEdgeIt e=bfs_queue.front();
-// 	Node w=G.bNode(e);
-// 	if (!reached.get(w)) {
-// 	  bfs_queue.push(G.template first<OutEdgeIt>(w));
-// 	  reached.set(w, true);
-// 	  _newly_reached=true;
-// 	} else {
-// 	  _newly_reached=false;
-// 	}
-//       }
-//       return *this;
-//     }
-//     bool valid() { 
-//       while ( !bfs_queue.empty() && !bfs_queue.front().valid() ) { bfs_queue.pop(); } 
-//       if (bfs_queue.empty()) return false; else return true;
-//     }
-//     operator OutEdgeIt() { return bfs_queue.front(); }
-//     //ize
-//     bool newly_reached() { return _newly_reached; }
-
-//   };
-
-//   template <typename Graph, typename OutEdgeIt, typename ReachedMap>
-//   struct BfsIterator {
-//     typedef typename Graph::Node Node;
-//     Graph& G;
-//     std::queue<OutEdgeIt>& bfs_queue;
-//     ReachedMap& reached;
-//     bool b_node_newly_reached;
-//     OutEdgeIt actual_edge;
-//     BfsIterator(Graph& _G, 
-// 		std::queue<OutEdgeIt>& _bfs_queue, 
-// 		ReachedMap& _reached) : 
-//       G(_G), bfs_queue(_bfs_queue), reached(_reached) { 
-//       actual_edge=bfs_queue.front();
-//       if (actual_edge.valid()) { 
-// 	Node w=G.bNode(actual_edge);
-// 	if (!reached.get(w)) {
-// 	  bfs_queue.push(G.firstOutEdge(w));
-// 	  reached.set(w, true);
-// 	  b_node_newly_reached=true;
-// 	} else {
-// 	  b_node_newly_reached=false;
-// 	}
-//       }
-//     }
-//     BfsIterator<Graph, OutEdgeIt, ReachedMap>& 
-//     operator++() { 
-//       if (bfs_queue.front().valid()) { 
-// 	++(bfs_queue.front());
-// 	actual_edge=bfs_queue.front();
-// 	if (actual_edge.valid()) {
-// 	  Node w=G.bNode(actual_edge);
-// 	  if (!reached.get(w)) {
-// 	    bfs_queue.push(G.firstOutEdge(w));
-// 	    reached.set(w, true);
-// 	    b_node_newly_reached=true;
-// 	  } else {
-// 	    b_node_newly_reached=false;
-// 	  }
-// 	}
-//       } else {
-// 	bfs_queue.pop(); 
-// 	actual_edge=bfs_queue.front();
-// 	if (actual_edge.valid()) {
-// 	  Node w=G.bNode(actual_edge);
-// 	  if (!reached.get(w)) {
-// 	    bfs_queue.push(G.firstOutEdge(w));
-// 	    reached.set(w, true);
-// 	    b_node_newly_reached=true;
-// 	  } else {
-// 	    b_node_newly_reached=false;
-// 	  }
-// 	}
-//       }
-//       return *this;
-//     }
-//     bool finished() { return bfs_queue.empty(); }
-//     operator OutEdgeIt () { return actual_edge; }
-//     bool bNodeIsNewlyReached() { return b_node_newly_reached; }
-//     bool aNodeIsExamined() { return !(actual_edge.valid()); }
-//   };
-
-
-//   template <typename Graph, typename OutEdgeIt, typename ReachedMap>
-//   struct DfsIterator {
-//     typedef typename Graph::Node Node;
-//     Graph& G;
-//     std::stack<OutEdgeIt>& bfs_queue;
-//     ReachedMap& reached;
-//     bool b_node_newly_reached;
-//     OutEdgeIt actual_edge;
-//     DfsIterator(Graph& _G, 
-// 		std::stack<OutEdgeIt>& _bfs_queue, 
-// 		ReachedMap& _reached) : 
-//       G(_G), bfs_queue(_bfs_queue), reached(_reached) { 
-//       actual_edge=bfs_queue.top();
-//       if (actual_edge.valid()) { 
-// 	Node w=G.bNode(actual_edge);
-// 	if (!reached.get(w)) {
-// 	  bfs_queue.push(G.firstOutEdge(w));
-// 	  reached.set(w, true);
-// 	  b_node_newly_reached=true;
-// 	} else {
-// 	  ++(bfs_queue.top());
-// 	  b_node_newly_reached=false;
-// 	}
-//       } else {
-// 	bfs_queue.pop();
-//       }
-//     }
-//     DfsIterator<Graph, OutEdgeIt, ReachedMap>& 
-//     operator++() { 
-//       actual_edge=bfs_queue.top();
-//       if (actual_edge.valid()) { 
-// 	Node w=G.bNode(actual_edge);
-// 	if (!reached.get(w)) {
-// 	  bfs_queue.push(G.firstOutEdge(w));
-// 	  reached.set(w, true);
-// 	  b_node_newly_reached=true;
-// 	} else {
-// 	  ++(bfs_queue.top());
-// 	  b_node_newly_reached=false;
-// 	}
-//       } else {
-// 	bfs_queue.pop();
-//       }
-//       return *this;
-//     }
-//     bool finished() { return bfs_queue.empty(); }
-//     operator OutEdgeIt () { return actual_edge; }
-//     bool bNodeIsNewlyReached() { return b_node_newly_reached; }
-//     bool aNodeIsExamined() { return !(actual_edge.valid()); }
-//   };
-
-//   template <typename Graph, typename OutEdgeIt, typename ReachedMap>
-//   struct BfsIterator1 {
-//     typedef typename Graph::Node Node;
-//     Graph& G;
-//     std::queue<OutEdgeIt>& bfs_queue;
-//     ReachedMap& reached;
-//     bool b_node_newly_reached;
-//     OutEdgeIt actual_edge;
-//     BfsIterator1(Graph& _G, 
-// 		std::queue<OutEdgeIt>& _bfs_queue, 
-// 		ReachedMap& _reached) : 
-//       G(_G), bfs_queue(_bfs_queue), reached(_reached) { 
-//       actual_edge=bfs_queue.front();
-//       if (actual_edge.valid()) { 
-//       	Node w=G.bNode(actual_edge);
-// 	if (!reached.get(w)) {
-// 	  bfs_queue.push(OutEdgeIt(G, w));
-// 	  reached.set(w, true);
-// 	  b_node_newly_reached=true;
-// 	} else {
-// 	  b_node_newly_reached=false;
-// 	}
-//       }
-//     }
-//     void next() { 
-//       if (bfs_queue.front().valid()) { 
-// 	++(bfs_queue.front());
-// 	actual_edge=bfs_queue.front();
-// 	if (actual_edge.valid()) {
-// 	  Node w=G.bNode(actual_edge);
-// 	  if (!reached.get(w)) {
-// 	    bfs_queue.push(OutEdgeIt(G, w));
-// 	    reached.set(w, true);
-// 	    b_node_newly_reached=true;
-// 	  } else {
-// 	    b_node_newly_reached=false;
-// 	  }
-// 	}
-//       } else {
-// 	bfs_queue.pop(); 
-// 	actual_edge=bfs_queue.front();
-// 	if (actual_edge.valid()) {
-// 	  Node w=G.bNode(actual_edge);
-// 	  if (!reached.get(w)) {
-// 	    bfs_queue.push(OutEdgeIt(G, w));
-// 	    reached.set(w, true);
-// 	    b_node_newly_reached=true;
-// 	  } else {
-// 	    b_node_newly_reached=false;
-// 	  }
-// 	}
-//       }
-//       //return *this;
-//     }
-//     bool finished() { return bfs_queue.empty(); }
-//     operator OutEdgeIt () { return actual_edge; }
-//     bool bNodeIsNewlyReached() { return b_node_newly_reached; }
-//     bool aNodeIsExamined() { return !(actual_edge.valid()); }
-//   };
-
-
-//   template <typename Graph, typename OutEdgeIt, typename ReachedMap>
-//   struct DfsIterator1 {
-//     typedef typename Graph::Node Node;
-//     Graph& G;
-//     std::stack<OutEdgeIt>& bfs_queue;
-//     ReachedMap& reached;
-//     bool b_node_newly_reached;
-//     OutEdgeIt actual_edge;
-//     DfsIterator1(Graph& _G, 
-// 		std::stack<OutEdgeIt>& _bfs_queue, 
-// 		ReachedMap& _reached) : 
-//       G(_G), bfs_queue(_bfs_queue), reached(_reached) { 
-//       //actual_edge=bfs_queue.top();
-//       //if (actual_edge.valid()) { 
-//       //	Node w=G.bNode(actual_edge);
-//       //if (!reached.get(w)) {
-//       //  bfs_queue.push(OutEdgeIt(G, w));
-//       //  reached.set(w, true);
-//       //  b_node_newly_reached=true;
-//       //} else {
-//       //  ++(bfs_queue.top());
-//       //  b_node_newly_reached=false;
-//       //}
-//       //} else {
-//       //	bfs_queue.pop();
-//       //}
-//     }
-//     void next() { 
-//       actual_edge=bfs_queue.top();
-//       if (actual_edge.valid()) { 
-// 	Node w=G.bNode(actual_edge);
-// 	if (!reached.get(w)) {
-// 	  bfs_queue.push(OutEdgeIt(G, w));
-// 	  reached.set(w, true);
-// 	  b_node_newly_reached=true;
-// 	} else {
-// 	  ++(bfs_queue.top());
-// 	  b_node_newly_reached=false;
-// 	}
-//       } else {
-// 	bfs_queue.pop();
-//       }
-//       //return *this;
-//     }
-//     bool finished() { return bfs_queue.empty(); }
-//     operator OutEdgeIt () { return actual_edge; }
-//     bool bNodeIsNewlyReached() { return b_node_newly_reached; }
-//     bool aNodeIsLeaved() { return !(actual_edge.valid()); }
-//   };
-
-//   template <typename Graph, typename OutEdgeIt, typename ReachedMap>
-//   class BfsIterator2 {
-//     typedef typename Graph::Node Node;
-//     const Graph& G;
-//     std::queue<OutEdgeIt> bfs_queue;
-//     ReachedMap reached;
-//     bool b_node_newly_reached;
-//     OutEdgeIt actual_edge;
-//   public:
-//     BfsIterator2(const Graph& _G) : G(_G), reached(G, false) { }
-//     void pushAndSetReached(Node s) { 
-//       reached.set(s, true);
-//       if (bfs_queue.empty()) {
-// 	bfs_queue.push(G.template first<OutEdgeIt>(s));
-// 	actual_edge=bfs_queue.front();
-// 	if (actual_edge.valid()) { 
-// 	  Node w=G.bNode(actual_edge);
-// 	  if (!reached.get(w)) {
-// 	    bfs_queue.push(G.template first<OutEdgeIt>(w));
-// 	    reached.set(w, true);
-// 	    b_node_newly_reached=true;
-// 	  } else {
-// 	    b_node_newly_reached=false;
-// 	  }
-// 	} //else {
-// 	//}
-//       } else {
-// 	bfs_queue.push(G.template first<OutEdgeIt>(s));
-//       }
-//     }
-//     BfsIterator2<Graph, OutEdgeIt, ReachedMap>& 
-//     operator++() { 
-//       if (bfs_queue.front().valid()) { 
-// 	++(bfs_queue.front());
-// 	actual_edge=bfs_queue.front();
-// 	if (actual_edge.valid()) {
-// 	  Node w=G.bNode(actual_edge);
-// 	  if (!reached.get(w)) {
-// 	    bfs_queue.push(G.template first<OutEdgeIt>(w));
-// 	    reached.set(w, true);
-// 	    b_node_newly_reached=true;
-// 	  } else {
-// 	    b_node_newly_reached=false;
-// 	  }
-// 	}
-//       } else {
-// 	bfs_queue.pop(); 
-// 	if (!bfs_queue.empty()) {
-// 	  actual_edge=bfs_queue.front();
-// 	  if (actual_edge.valid()) {
-// 	    Node w=G.bNode(actual_edge);
-// 	    if (!reached.get(w)) {
-// 	      bfs_queue.push(G.template first<OutEdgeIt>(w));
-// 	      reached.set(w, true);
-// 	      b_node_newly_reached=true;
-// 	    } else {
-// 	      b_node_newly_reached=false;
-// 	    }
-// 	  }
-// 	}
-//       }
-//       return *this;
-//     }
-//     bool finished() const { return bfs_queue.empty(); }
-//     operator OutEdgeIt () const { return actual_edge; }
-//     bool isBNodeNewlyReached() const { return b_node_newly_reached; }
-//     bool isANodeExamined() const { return !(actual_edge.valid()); }
-//     const ReachedMap& getReachedMap() const { return reached; }
-//     const std::queue<OutEdgeIt>& getBfsQueue() const { return bfs_queue; }
-//  };
-
-
-//   template <typename Graph, typename OutEdgeIt, typename ReachedMap>
-//   class BfsIterator3 {
-//     typedef typename Graph::Node Node;
-//     const Graph& G;
-//     std::queue< std::pair<Node, OutEdgeIt> > bfs_queue;
-//     ReachedMap reached;
-//     bool b_node_newly_reached;
-//     OutEdgeIt actual_edge;
-//   public:
-//     BfsIterator3(const Graph& _G) : G(_G), reached(G, false) { }
-//     void pushAndSetReached(Node s) { 
-//       reached.set(s, true);
-//       if (bfs_queue.empty()) {
-// 	bfs_queue.push(std::pair<Node, OutEdgeIt>(s, G.template first<OutEdgeIt>(s)));
-// 	actual_edge=bfs_queue.front().second;
-// 	if (actual_edge.valid()) { 
-// 	  Node w=G.bNode(actual_edge);
-// 	  if (!reached.get(w)) {
-// 	    bfs_queue.push(std::pair<Node, OutEdgeIt>(w, G.template first<OutEdgeIt>(w)));
-// 	    reached.set(w, true);
-// 	    b_node_newly_reached=true;
-// 	  } else {
-// 	    b_node_newly_reached=false;
-// 	  }
-// 	} //else {
-// 	//}
-//       } else {
-// 	bfs_queue.push(std::pair<Node, OutEdgeIt>(s, G.template first<OutEdgeIt>(s)));
-//       }
-//     }
-//     BfsIterator3<Graph, OutEdgeIt, ReachedMap>& 
-//     operator++() { 
-//       if (bfs_queue.front().second.valid()) { 
-// 	++(bfs_queue.front().second);
-// 	actual_edge=bfs_queue.front().second;
-// 	if (actual_edge.valid()) {
-// 	  Node w=G.bNode(actual_edge);
-// 	  if (!reached.get(w)) {
-// 	    bfs_queue.push(std::pair<Node, OutEdgeIt>(w, G.template first<OutEdgeIt>(w)));
-// 	    reached.set(w, true);
-// 	    b_node_newly_reached=true;
-// 	  } else {
-// 	    b_node_newly_reached=false;
-// 	  }
-// 	}
-//       } else {
-// 	bfs_queue.pop(); 
-// 	if (!bfs_queue.empty()) {
-// 	  actual_edge=bfs_queue.front().second;
-// 	  if (actual_edge.valid()) {
-// 	    Node w=G.bNode(actual_edge);
-// 	    if (!reached.get(w)) {
-// 	      bfs_queue.push(std::pair<Node, OutEdgeIt>(w, G.template first<OutEdgeIt>(w)));
-// 	      reached.set(w, true);
-// 	      b_node_newly_reached=true;
-// 	    } else {
-// 	      b_node_newly_reached=false;
-// 	    }
-// 	  }
-// 	}
-//       }
-//       return *this;
-//     }
-//     bool finished() const { return bfs_queue.empty(); }
-//     operator OutEdgeIt () const { return actual_edge; }
-//     bool isBNodeNewlyReached() const { return b_node_newly_reached; }
-//     bool isANodeExamined() const { return !(actual_edge.valid()); }
-//     Node aNode() const { return bfs_queue.front().first; }
-//     Node bNode() const { return G.bNode(actual_edge); }
-//     const ReachedMap& getReachedMap() const { return reached; }
-//     //const std::queue< std::pair<Node, OutEdgeIt> >& getBfsQueue() const { return bfs_queue; }
-//  };
-
-
-//   template <typename Graph, typename OutEdgeIt, 
-// 	    typename ReachedMap/*=typename Graph::NodeMap<bool>*/ >
-//   class BfsIterator4 {
-//     typedef typename Graph::Node Node;
-//     const Graph& G;
-//     std::queue<Node> bfs_queue;
-//     ReachedMap& reached;
-//     bool b_node_newly_reached;
-//     OutEdgeIt actual_edge;
-//     bool own_reached_map;
-//   public:
-//     BfsIterator4(const Graph& _G, ReachedMap& _reached) : 
-//       G(_G), reached(_reached), 
-//       own_reached_map(false) { }
-//     BfsIterator4(const Graph& _G) : 
-//       G(_G), reached(*(new ReachedMap(G /*, false*/))), 
-//       own_reached_map(true) { }
-//     ~BfsIterator4() { if (own_reached_map) delete &reached; }
-//     void pushAndSetReached(Node s) { 
-//       //std::cout << "mimi" << &reached << std::endl;
-//       reached.set(s, true);
-//       //std::cout << "mumus" << std::endl;
-//       if (bfs_queue.empty()) {
-// 	//std::cout << "bibi1" << std::endl;
-// 	bfs_queue.push(s);
-// 	//std::cout << "zizi" << std::endl;
-// 	G./*getF*/first(actual_edge, s);
-// 	//std::cout << "kiki" << std::endl;
-// 	if (G.valid(actual_edge)/*.valid()*/) { 
-// 	  Node w=G.bNode(actual_edge);
-// 	  if (!reached.get(w)) {
-// 	    bfs_queue.push(w);
-// 	    reached.set(w, true);
-// 	    b_node_newly_reached=true;
-// 	  } else {
-// 	    b_node_newly_reached=false;
-// 	  }
-// 	} 
-//       } else {
-// 	//std::cout << "bibi2" << std::endl;
-// 	bfs_queue.push(s);
-//       }
-//     }
-//     BfsIterator4<Graph, OutEdgeIt, ReachedMap>& 
-//     operator++() { 
-//       if (G.valid(actual_edge)/*.valid()*/) { 
-// 	/*++*/G.next(actual_edge);
-// 	if (G.valid(actual_edge)/*.valid()*/) {
-// 	  Node w=G.bNode(actual_edge);
-// 	  if (!reached.get(w)) {
-// 	    bfs_queue.push(w);
-// 	    reached.set(w, true);
-// 	    b_node_newly_reached=true;
-// 	  } else {
-// 	    b_node_newly_reached=false;
-// 	  }
-// 	}
-//       } else {
-// 	bfs_queue.pop(); 
-// 	if (!bfs_queue.empty()) {
-// 	  G./*getF*/first(actual_edge, bfs_queue.front());
-// 	  if (G.valid(actual_edge)/*.valid()*/) {
-// 	    Node w=G.bNode(actual_edge);
-// 	    if (!reached.get(w)) {
-// 	      bfs_queue.push(w);
-// 	      reached.set(w, true);
-// 	      b_node_newly_reached=true;
-// 	    } else {
-// 	      b_node_newly_reached=false;
-// 	    }
-// 	  }
-// 	}
-//       }
-//       return *this;
-//     }
-//     bool finished() const { return bfs_queue.empty(); }
-//     operator OutEdgeIt () const { return actual_edge; }
-//     bool isBNodeNewlyReached() const { return b_node_newly_reached; }
-//     bool isANodeExamined() const { return !(G.valid(actual_edge)/*.valid()*/); }
-//     Node aNode() const { return bfs_queue.front(); }
-//     Node bNode() const { return G.bNode(actual_edge); }
-//     const ReachedMap& getReachedMap() const { return reached; }
-//     const std::queue<Node>& getBfsQueue() const { return bfs_queue; }
-//  };  
-
-
-  template <typename GraphWrapper, /*typename OutEdgeIt,*/ 
-	    typename ReachedMap/*=typename GraphWrapper::NodeMap<bool>*/ >
-  class BfsIterator5 {
-    typedef typename GraphWrapper::Node Node;
-    typedef typename GraphWrapper::OutEdgeIt OutEdgeIt;
-    GraphWrapper G;
-    std::queue<Node> bfs_queue;
-    ReachedMap& reached;
-    bool b_node_newly_reached;
-    OutEdgeIt actual_edge;
-    bool own_reached_map;
-  public:
-    BfsIterator5(const GraphWrapper& _G, ReachedMap& _reached) : 
-      G(_G), reached(_reached), 
-      own_reached_map(false) { }
-    BfsIterator5(const GraphWrapper& _G) : 
-      G(_G), reached(*(new ReachedMap(G /*, false*/))), 
-      own_reached_map(true) { }
-//     BfsIterator5(const typename GraphWrapper::BaseGraph& _G, 
-// 		 ReachedMap& _reached) : 
-//       G(_G), reached(_reached), 
-//       own_reached_map(false) { }
-//     BfsIterator5(const typename GraphWrapper::BaseGraph& _G) : 
-//       G(_G), reached(*(new ReachedMap(G /*, false*/))), 
-//       own_reached_map(true) { }
-    ~BfsIterator5() { if (own_reached_map) delete &reached; }
-    void pushAndSetReached(Node s) { 
-      reached.set(s, true);
-      if (bfs_queue.empty()) {
-	bfs_queue.push(s);
-	G./*getF*/first(actual_edge, s);
-	if (G.valid(actual_edge)/*.valid()*/) { 
-	  Node w=G.bNode(actual_edge);
-	  if (!reached.get(w)) {
-	    bfs_queue.push(w);
-	    reached.set(w, true);
-	    b_node_newly_reached=true;
-	  } else {
-	    b_node_newly_reached=false;
-	  }
-	} 
-      } else {
-	bfs_queue.push(s);
-      }
-    }
-    BfsIterator5<GraphWrapper, /*OutEdgeIt,*/ ReachedMap>& 
-    operator++() { 
-      if (G.valid(actual_edge)/*.valid()*/) { 
-	/*++*/G.next(actual_edge);
-	if (G.valid(actual_edge)/*.valid()*/) {
-	  Node w=G.bNode(actual_edge);
-	  if (!reached.get(w)) {
-	    bfs_queue.push(w);
-	    reached.set(w, true);
-	    b_node_newly_reached=true;
-	  } else {
-	    b_node_newly_reached=false;
-	  }
-	}
-      } else {
-	bfs_queue.pop(); 
-	if (!bfs_queue.empty()) {
-	  G./*getF*/first(actual_edge, bfs_queue.front());
-	  if (G.valid(actual_edge)/*.valid()*/) {
-	    Node w=G.bNode(actual_edge);
-	    if (!reached.get(w)) {
-	      bfs_queue.push(w);
-	      reached.set(w, true);
-	      b_node_newly_reached=true;
-	    } else {
-	      b_node_newly_reached=false;
-	    }
-	  }
-	}
-      }
-      return *this;
-    }
-    bool finished() const { return bfs_queue.empty(); }
-    operator OutEdgeIt () const { return actual_edge; }
-    bool isBNodeNewlyReached() const { return b_node_newly_reached; }
-    bool isANodeExamined() const { return !(G.valid(actual_edge)/*.valid()*/); }
-    Node aNode() const { return bfs_queue.front(); }
-    Node bNode() const { return G.bNode(actual_edge); }
-    const ReachedMap& getReachedMap() const { return reached; }
-    const std::queue<Node>& getBfsQueue() const { return bfs_queue; }
-  };  
-
-//   template <typename Graph, typename OutEdgeIt, 
-// 	    typename ReachedMap/*=typename Graph::NodeMap<bool>*/ >
-//   class DfsIterator4 {
-//     typedef typename Graph::Node Node;
-//     const Graph& G;
-//     std::stack<OutEdgeIt> dfs_stack;
-//     bool b_node_newly_reached;
-//     OutEdgeIt actual_edge;
-//     Node actual_node;
-//     ReachedMap& reached;
-//     bool own_reached_map;
-//   public:
-//     DfsIterator4(const Graph& _G, ReachedMap& _reached) : 
-//       G(_G), reached(_reached), 
-//       own_reached_map(false) { }
-//     DfsIterator4(const Graph& _G) : 
-//       G(_G), reached(*(new ReachedMap(G /*, false*/))), 
-//       own_reached_map(true) { }
-//     ~DfsIterator4() { if (own_reached_map) delete &reached; }
-//     void pushAndSetReached(Node s) { 
-//       actual_node=s;
-//       reached.set(s, true);
-//       dfs_stack.push(G.template first<OutEdgeIt>(s)); 
-//     }
-//     DfsIterator4<Graph, OutEdgeIt, ReachedMap>& 
-//     operator++() { 
-//       actual_edge=dfs_stack.top();
-//       //actual_node=G.aNode(actual_edge);
-//       if (G.valid(actual_edge)/*.valid()*/) { 
-// 	Node w=G.bNode(actual_edge);
-// 	actual_node=w;
-// 	if (!reached.get(w)) {
-// 	  dfs_stack.push(G.template first<OutEdgeIt>(w));
-// 	  reached.set(w, true);
-// 	  b_node_newly_reached=true;
-// 	} else {
-// 	  actual_node=G.aNode(actual_edge);
-// 	  /*++*/G.next(dfs_stack.top());
-// 	  b_node_newly_reached=false;
-// 	}
-//       } else {
-// 	//actual_node=G.aNode(dfs_stack.top());
-// 	dfs_stack.pop();
-//       }
-//       return *this;
-//     }
-//     bool finished() const { return dfs_stack.empty(); }
-//     operator OutEdgeIt () const { return actual_edge; }
-//     bool isBNodeNewlyReached() const { return b_node_newly_reached; }
-//     bool isANodeExamined() const { return !(G.valid(actual_edge)/*.valid()*/); }
-//     Node aNode() const { return actual_node; /*FIXME*/}
-//     Node bNode() const { return G.bNode(actual_edge); }
-//     const ReachedMap& getReachedMap() const { return reached; }
-//     const std::stack<OutEdgeIt>& getDfsStack() const { return dfs_stack; }
-//   };
-
-  template <typename GraphWrapper, /*typename OutEdgeIt,*/ 
-	    typename ReachedMap/*=typename GraphWrapper::NodeMap<bool>*/ >
-  class DfsIterator5 {
-    typedef typename GraphWrapper::Node Node;
-    typedef typename GraphWrapper::OutEdgeIt OutEdgeIt;
-    GraphWrapper G;
-    std::stack<OutEdgeIt> dfs_stack;
-    bool b_node_newly_reached;
-    OutEdgeIt actual_edge;
-    Node actual_node;
-    ReachedMap& reached;
-    bool own_reached_map;
-  public:
-    DfsIterator5(const GraphWrapper& _G, ReachedMap& _reached) : 
-      G(_G), reached(_reached), 
-      own_reached_map(false) { }
-    DfsIterator5(const GraphWrapper& _G) : 
-      G(_G), reached(*(new ReachedMap(G /*, false*/))), 
-      own_reached_map(true) { }
-    ~DfsIterator5() { if (own_reached_map) delete &reached; }
-    void pushAndSetReached(Node s) { 
-      actual_node=s;
-      reached.set(s, true);
-      OutEdgeIt e;
-      G.first(e, s);
-      dfs_stack.push(e); 
-    }
-    DfsIterator5<GraphWrapper, /*OutEdgeIt,*/ ReachedMap>& 
-    operator++() { 
-      actual_edge=dfs_stack.top();
-      //actual_node=G.aNode(actual_edge);
-      if (G.valid(actual_edge)/*.valid()*/) { 
-	Node w=G.bNode(actual_edge);
-	actual_node=w;
-	if (!reached.get(w)) {
-	  OutEdgeIt e;
-	  G.first(e, w);
-	  dfs_stack.push(e);
-	  reached.set(w, true);
-	  b_node_newly_reached=true;
-	} else {
-	  actual_node=G.aNode(actual_edge);
-	  /*++*/G.next(dfs_stack.top());
-	  b_node_newly_reached=false;
-	}
-      } else {
-	//actual_node=G.aNode(dfs_stack.top());
-	dfs_stack.pop();
-      }
-      return *this;
-    }
-    bool finished() const { return dfs_stack.empty(); }
-    operator OutEdgeIt () const { return actual_edge; }
-    bool isBNodeNewlyReached() const { return b_node_newly_reached; }
-    bool isANodeExamined() const { return !(G.valid(actual_edge)/*.valid()*/); }
-    Node aNode() const { return actual_node; /*FIXME*/}
-    Node bNode() const { return G.bNode(actual_edge); }
-    const ReachedMap& getReachedMap() const { return reached; }
-    const std::stack<OutEdgeIt>& getDfsStack() const { return dfs_stack; }
-  };
-
-
-
-} // namespace lemon
-
-#endif //LEMON_BFS_ITERATOR_H