1 | // -*- c++ -*- |
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2 | |
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3 | #ifndef LEMON_ERASABLE_GRAPH_EXTENDER_H |
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4 | #define LEMON_ERASABLE_GRAPH_EXTENDER_H |
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5 | |
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6 | #include <vector> |
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7 | |
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8 | #include <lemon/invalid.h> |
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9 | |
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10 | |
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11 | namespace lemon { |
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12 | |
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13 | template <typename _Base> |
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14 | class ErasableGraphExtender : public _Base { |
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15 | public: |
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16 | |
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17 | typedef ErasableGraphExtender Graph; |
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18 | typedef _Base Parent; |
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19 | |
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20 | typedef typename Parent::Node Node; |
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21 | typedef typename Parent::Edge Edge; |
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22 | |
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23 | void erase(const Node& node) { |
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24 | Edge edge; |
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25 | Parent::firstOut(edge, node); |
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26 | while (edge != INVALID ) { |
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27 | erase(edge); |
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28 | Parent::firstOut(edge, node); |
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29 | } |
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30 | |
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31 | Parent::firstIn(edge, node); |
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32 | while (edge != INVALID ) { |
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33 | erase(edge); |
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34 | Parent::firstIn(edge, node); |
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35 | } |
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36 | |
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37 | Parent::getNotifier(Node()).erase(node); |
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38 | Parent::erase(node); |
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39 | } |
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40 | |
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41 | void erase(const Edge& edge) { |
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42 | Parent::getNotifier(Edge()).erase(edge); |
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43 | Parent::erase(edge); |
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44 | } |
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45 | |
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46 | }; |
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47 | |
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48 | template <typename _Base> |
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49 | class ErasableUndirGraphExtender : public _Base { |
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50 | public: |
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51 | |
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52 | typedef ErasableUndirGraphExtender Graph; |
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53 | typedef _Base Parent; |
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54 | |
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55 | typedef typename Parent::Node Node; |
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56 | typedef typename Parent::UndirEdge UndirEdge; |
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57 | typedef typename Parent::Edge Edge; |
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58 | |
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59 | void erase(const Node& node) { |
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60 | Edge edge; |
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61 | Parent::firstOut(edge, node); |
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62 | while (edge != INVALID ) { |
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63 | erase(edge); |
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64 | Parent::firstOut(edge, node); |
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65 | } |
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66 | |
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67 | Parent::getNotifier(Node()).erase(node); |
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68 | Parent::erase(node); |
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69 | } |
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70 | |
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71 | void erase(const UndirEdge& uedge) { |
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72 | std::vector<Edge> edges; |
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73 | edges.push_back(Parent::direct(uedge,true)); |
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74 | edges.push_back(Parent::direct(uedge,false)); |
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75 | Parent::getNotifier(Edge()).erase(edges); |
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76 | Parent::getNotifier(UndirEdge()).erase(uedge); |
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77 | Parent::erase(uedge); |
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78 | } |
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79 | |
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80 | }; |
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81 | |
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82 | } |
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83 | |
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84 | #endif |
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