lemon/bits/erasable_graph_extender.h
author deba
Tue, 31 Jan 2006 20:14:52 +0000
changeset 1934 272fa8a0b680
parent 1842 8abf74160dc4
child 1956 a055123339d5
permissions -rw-r--r--
Bug fix

ANodeIt/BNodeIt should not be inherited from ANode/BNode

The reason:
assert(graph.id(ANodeIt(graph)) == graph.id((Node)ANodeIt(graph)));
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// -*- c++ -*-
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#ifndef LEMON_ERASABLE_GRAPH_EXTENDER_H
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#define LEMON_ERASABLE_GRAPH_EXTENDER_H
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#include <vector>
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#include <lemon/invalid.h>
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namespace lemon {
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  template <typename _Base> 
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  class ErasableGraphExtender : public _Base {
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  public:
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    typedef ErasableGraphExtender Graph;
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    typedef _Base Parent;
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    typedef typename Parent::Node Node;
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    typedef typename Parent::Edge Edge;
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    void erase(const Node& node) {
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      Edge edge;
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      Parent::firstOut(edge, node);
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      while (edge != INVALID ) {
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	erase(edge);
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	Parent::firstOut(edge, node);
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      } 
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      Parent::firstIn(edge, node);
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      while (edge != INVALID ) {
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	erase(edge);
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	Parent::firstIn(edge, node);
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      }
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      Parent::getNotifier(Node()).erase(node);
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      Parent::erase(node);
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    }
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    void erase(const Edge& edge) {
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      Parent::getNotifier(Edge()).erase(edge);
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      Parent::erase(edge);
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    }
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  };
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  template <typename _Base> 
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  class ErasableEdgeSetExtender : public _Base {
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  public:
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    typedef ErasableEdgeSetExtender Graph;
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    typedef _Base Parent;
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    typedef typename Parent::Edge Edge;
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    void erase(const Edge& edge) {
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      Parent::getNotifier(Edge()).erase(edge);
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      Parent::erase(edge);
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    }
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  };
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  template <typename _Base> 
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  class ErasableUGraphExtender : public _Base {
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  public:
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    typedef ErasableUGraphExtender Graph;
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    typedef _Base Parent;
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    typedef typename Parent::Node Node;
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    typedef typename Parent::UEdge UEdge;
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    typedef typename Parent::Edge Edge;
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    void erase(const Node& node) {
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      Edge edge;
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      Parent::firstOut(edge, node);
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      while (edge != INVALID ) {
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	erase(edge);
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	Parent::firstOut(edge, node);
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      } 
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      Parent::getNotifier(Node()).erase(node);
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      Parent::erase(node);
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    }
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    void erase(const UEdge& uedge) {
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      std::vector<Edge> edges;
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      edges.push_back(Parent::direct(uedge,true));
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      edges.push_back(Parent::direct(uedge,false));
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      Parent::getNotifier(Edge()).erase(edges);
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      Parent::getNotifier(UEdge()).erase(uedge);
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      Parent::erase(uedge);
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    }
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  };
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  template <typename _Base> 
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  class ErasableUEdgeSetExtender : public _Base {
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  public:
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    typedef ErasableUEdgeSetExtender Graph;
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    typedef _Base Parent;
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    typedef typename Parent::Node Node;
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    typedef typename Parent::UEdge UEdge;
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    typedef typename Parent::Edge Edge;
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    void erase(const UEdge& uedge) {
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      std::vector<Edge> edges;
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      edges.push_back(Parent::direct(uedge,true));
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      edges.push_back(Parent::direct(uedge,false));
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      Parent::getNotifier(Edge()).erase(edges);
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      Parent::getNotifier(UEdge()).erase(uedge);
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      Parent::erase(uedge);
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    }
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  };
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}
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#endif