[1979] | 1 | /* -*- C++ -*- |
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| 2 | * |
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| 3 | * This file is a part of LEMON, a generic C++ optimization library |
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| 4 | * |
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| 5 | * Copyright (C) 2003-2006 |
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| 6 | * Egervary Jeno Kombinatorikus Optimalizalasi Kutatocsoport |
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| 7 | * (Egervary Research Group on Combinatorial Optimization, EGRES). |
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| 8 | * |
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| 9 | * Permission to use, modify and distribute this software is granted |
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| 10 | * provided that this copyright notice appears in all copies. For |
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| 11 | * precise terms see the accompanying LICENSE file. |
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| 12 | * |
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| 13 | * This software is provided "AS IS" with no warranty of any kind, |
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| 14 | * express or implied, and with no claim as to its suitability for any |
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| 15 | * purpose. |
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| 16 | * |
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| 17 | */ |
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| 18 | |
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[1996] | 19 | #ifndef LEMON_BITS_EDGE_SET_EXTENDER_H |
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| 20 | #define LEMON_BITS_EDGE_SET_EXTENDER_H |
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[1979] | 21 | |
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[1996] | 22 | #include <lemon/bits/invalid.h> |
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| 23 | #include <lemon/error.h> |
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| 24 | |
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| 25 | #include <lemon/bits/default_map.h> |
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| 26 | |
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| 27 | ///\ingroup graphbits |
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| 28 | ///\file |
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| 29 | ///\brief Extenders for the edge set types |
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[1979] | 30 | namespace lemon { |
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| 31 | |
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[1996] | 32 | /// \ingroup graphbits |
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| 33 | /// |
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| 34 | /// \brief Extender for the EdgeSets |
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[1979] | 35 | template <typename Base> |
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| 36 | class EdgeSetExtender : public Base { |
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| 37 | public: |
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| 38 | |
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| 39 | typedef Base Parent; |
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| 40 | typedef EdgeSetExtender Graph; |
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| 41 | |
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| 42 | // Base extensions |
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| 43 | |
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| 44 | typedef typename Parent::Node Node; |
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| 45 | typedef typename Parent::Edge Edge; |
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| 46 | |
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| 47 | int maxId(Node) const { |
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| 48 | return Parent::maxNodeId(); |
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| 49 | } |
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| 50 | |
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| 51 | int maxId(Edge) const { |
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| 52 | return Parent::maxEdgeId(); |
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| 53 | } |
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| 54 | |
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| 55 | Node fromId(int id, Node) const { |
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| 56 | return Parent::nodeFromId(id); |
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| 57 | } |
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| 58 | |
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| 59 | Edge fromId(int id, Edge) const { |
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| 60 | return Parent::edgeFromId(id); |
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| 61 | } |
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| 62 | |
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| 63 | Node oppositeNode(const Node &n, const Edge &e) const { |
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| 64 | if (n == Parent::source(e)) |
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| 65 | return Parent::target(e); |
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| 66 | else if(n==Parent::target(e)) |
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| 67 | return Parent::source(e); |
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| 68 | else |
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| 69 | return INVALID; |
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| 70 | } |
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| 71 | |
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| 72 | |
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| 73 | // Alteration notifier extensions |
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| 74 | |
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| 75 | /// The edge observer registry. |
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[1999] | 76 | typedef AlterationNotifier<EdgeSetExtender, Edge> EdgeNotifier; |
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[1979] | 77 | |
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| 78 | protected: |
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| 79 | |
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| 80 | mutable EdgeNotifier edge_notifier; |
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| 81 | |
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| 82 | public: |
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| 83 | |
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[1991] | 84 | using Parent::getNotifier; |
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| 85 | |
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[1979] | 86 | /// \brief Gives back the edge alteration notifier. |
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| 87 | /// |
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| 88 | /// Gives back the edge alteration notifier. |
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| 89 | EdgeNotifier& getNotifier(Edge) const { |
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| 90 | return edge_notifier; |
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| 91 | } |
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| 92 | |
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| 93 | // Iterable extensions |
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| 94 | |
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| 95 | class NodeIt : public Node { |
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| 96 | const Graph* graph; |
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| 97 | public: |
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| 98 | |
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| 99 | NodeIt() {} |
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| 100 | |
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| 101 | NodeIt(Invalid i) : Node(i) { } |
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| 102 | |
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| 103 | explicit NodeIt(const Graph& _graph) : graph(&_graph) { |
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[2031] | 104 | _graph.first(static_cast<Node&>(*this)); |
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[1979] | 105 | } |
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| 106 | |
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| 107 | NodeIt(const Graph& _graph, const Node& node) |
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| 108 | : Node(node), graph(&_graph) {} |
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| 109 | |
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| 110 | NodeIt& operator++() { |
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| 111 | graph->next(*this); |
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| 112 | return *this; |
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| 113 | } |
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| 114 | |
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| 115 | }; |
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| 116 | |
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| 117 | |
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| 118 | class EdgeIt : public Edge { |
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| 119 | const Graph* graph; |
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| 120 | public: |
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| 121 | |
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| 122 | EdgeIt() { } |
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| 123 | |
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| 124 | EdgeIt(Invalid i) : Edge(i) { } |
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| 125 | |
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| 126 | explicit EdgeIt(const Graph& _graph) : graph(&_graph) { |
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[2031] | 127 | _graph.first(static_cast<Edge&>(*this)); |
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[1979] | 128 | } |
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| 129 | |
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| 130 | EdgeIt(const Graph& _graph, const Edge& e) : |
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| 131 | Edge(e), graph(&_graph) { } |
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| 132 | |
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| 133 | EdgeIt& operator++() { |
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| 134 | graph->next(*this); |
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| 135 | return *this; |
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| 136 | } |
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| 137 | |
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| 138 | }; |
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| 139 | |
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| 140 | |
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| 141 | class OutEdgeIt : public Edge { |
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| 142 | const Graph* graph; |
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| 143 | public: |
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| 144 | |
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| 145 | OutEdgeIt() { } |
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| 146 | |
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| 147 | OutEdgeIt(Invalid i) : Edge(i) { } |
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| 148 | |
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| 149 | OutEdgeIt(const Graph& _graph, const Node& node) |
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| 150 | : graph(&_graph) { |
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| 151 | _graph.firstOut(*this, node); |
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| 152 | } |
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| 153 | |
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| 154 | OutEdgeIt(const Graph& _graph, const Edge& edge) |
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| 155 | : Edge(edge), graph(&_graph) {} |
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| 156 | |
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| 157 | OutEdgeIt& operator++() { |
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| 158 | graph->nextOut(*this); |
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| 159 | return *this; |
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| 160 | } |
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| 161 | |
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| 162 | }; |
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| 163 | |
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| 164 | |
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| 165 | class InEdgeIt : public Edge { |
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| 166 | const Graph* graph; |
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| 167 | public: |
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| 168 | |
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| 169 | InEdgeIt() { } |
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| 170 | |
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| 171 | InEdgeIt(Invalid i) : Edge(i) { } |
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| 172 | |
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| 173 | InEdgeIt(const Graph& _graph, const Node& node) |
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| 174 | : graph(&_graph) { |
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| 175 | _graph.firstIn(*this, node); |
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| 176 | } |
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| 177 | |
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| 178 | InEdgeIt(const Graph& _graph, const Edge& edge) : |
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| 179 | Edge(edge), graph(&_graph) {} |
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| 180 | |
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| 181 | InEdgeIt& operator++() { |
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| 182 | graph->nextIn(*this); |
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| 183 | return *this; |
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| 184 | } |
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| 185 | |
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| 186 | }; |
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| 187 | |
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| 188 | /// \brief Base node of the iterator |
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| 189 | /// |
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| 190 | /// Returns the base node (ie. the source in this case) of the iterator |
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| 191 | Node baseNode(const OutEdgeIt &e) const { |
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| 192 | return Parent::source((Edge)e); |
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| 193 | } |
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| 194 | /// \brief Running node of the iterator |
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| 195 | /// |
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| 196 | /// Returns the running node (ie. the target in this case) of the |
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| 197 | /// iterator |
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| 198 | Node runningNode(const OutEdgeIt &e) const { |
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| 199 | return Parent::target((Edge)e); |
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| 200 | } |
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| 201 | |
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| 202 | /// \brief Base node of the iterator |
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| 203 | /// |
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| 204 | /// Returns the base node (ie. the target in this case) of the iterator |
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| 205 | Node baseNode(const InEdgeIt &e) const { |
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| 206 | return Parent::target((Edge)e); |
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| 207 | } |
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| 208 | /// \brief Running node of the iterator |
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| 209 | /// |
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| 210 | /// Returns the running node (ie. the source in this case) of the |
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| 211 | /// iterator |
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| 212 | Node runningNode(const InEdgeIt &e) const { |
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| 213 | return Parent::source((Edge)e); |
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| 214 | } |
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| 215 | |
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| 216 | using Parent::first; |
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| 217 | |
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| 218 | // Mappable extension |
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| 219 | |
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| 220 | template <typename _Value> |
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| 221 | class EdgeMap |
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[1999] | 222 | : public MapExtender<DefaultMap<Graph, Edge, _Value> > { |
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[1979] | 223 | public: |
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| 224 | typedef EdgeSetExtender Graph; |
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[1999] | 225 | typedef MapExtender<DefaultMap<Graph, Edge, _Value> > Parent; |
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[1979] | 226 | |
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[2046] | 227 | explicit EdgeMap(const Graph& _g) |
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[1979] | 228 | : Parent(_g) {} |
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| 229 | EdgeMap(const Graph& _g, const _Value& _v) |
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| 230 | : Parent(_g, _v) {} |
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| 231 | |
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| 232 | EdgeMap& operator=(const EdgeMap& cmap) { |
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| 233 | return operator=<EdgeMap>(cmap); |
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| 234 | } |
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| 235 | |
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| 236 | template <typename CMap> |
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| 237 | EdgeMap& operator=(const CMap& cmap) { |
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[2031] | 238 | Parent::operator=(cmap); |
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[1979] | 239 | return *this; |
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| 240 | } |
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[2031] | 241 | |
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[1979] | 242 | }; |
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| 243 | |
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| 244 | |
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| 245 | // Alteration extension |
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| 246 | |
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| 247 | Edge addEdge(const Node& from, const Node& to) { |
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| 248 | Edge edge = Parent::addEdge(from, to); |
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| 249 | getNotifier(Edge()).add(edge); |
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| 250 | return edge; |
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| 251 | } |
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| 252 | |
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| 253 | void clear() { |
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| 254 | getNotifier(Edge()).clear(); |
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| 255 | Parent::clear(); |
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| 256 | } |
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| 257 | |
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| 258 | void erase(const Edge& edge) { |
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| 259 | getNotifier(Edge()).erase(edge); |
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| 260 | Parent::erase(edge); |
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| 261 | } |
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| 262 | |
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[1999] | 263 | EdgeSetExtender() { |
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| 264 | edge_notifier.setContainer(*this); |
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| 265 | } |
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[1979] | 266 | |
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| 267 | ~EdgeSetExtender() { |
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| 268 | edge_notifier.clear(); |
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| 269 | } |
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| 270 | |
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| 271 | }; |
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| 272 | |
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| 273 | |
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[1996] | 274 | /// \ingroup graphbits |
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| 275 | /// |
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| 276 | /// \brief Extender for the UEdgeSets |
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[1979] | 277 | template <typename Base> |
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| 278 | class UEdgeSetExtender : public Base { |
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| 279 | |
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| 280 | public: |
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| 281 | |
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| 282 | typedef Base Parent; |
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| 283 | typedef UEdgeSetExtender Graph; |
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| 284 | |
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| 285 | typedef typename Parent::Node Node; |
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| 286 | typedef typename Parent::Edge Edge; |
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| 287 | typedef typename Parent::UEdge UEdge; |
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| 288 | |
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| 289 | |
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| 290 | int maxId(Node) const { |
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| 291 | return Parent::maxNodeId(); |
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| 292 | } |
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| 293 | |
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| 294 | int maxId(Edge) const { |
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| 295 | return Parent::maxEdgeId(); |
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| 296 | } |
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| 297 | |
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| 298 | int maxId(UEdge) const { |
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| 299 | return Parent::maxUEdgeId(); |
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| 300 | } |
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| 301 | |
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| 302 | Node fromId(int id, Node) const { |
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| 303 | return Parent::nodeFromId(id); |
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| 304 | } |
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| 305 | |
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| 306 | Edge fromId(int id, Edge) const { |
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| 307 | return Parent::edgeFromId(id); |
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| 308 | } |
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| 309 | |
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| 310 | UEdge fromId(int id, UEdge) const { |
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| 311 | return Parent::uEdgeFromId(id); |
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| 312 | } |
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| 313 | |
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| 314 | Node oppositeNode(const Node &n, const UEdge &e) const { |
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| 315 | if( n == Parent::source(e)) |
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| 316 | return Parent::target(e); |
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| 317 | else if( n == Parent::target(e)) |
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| 318 | return Parent::source(e); |
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| 319 | else |
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| 320 | return INVALID; |
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| 321 | } |
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| 322 | |
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| 323 | Edge oppositeEdge(const Edge &e) const { |
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| 324 | return Parent::direct(e, !Parent::direction(e)); |
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| 325 | } |
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| 326 | |
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| 327 | using Parent::direct; |
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| 328 | Edge direct(const UEdge &ue, const Node &s) const { |
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| 329 | return Parent::direct(ue, Parent::source(ue) == s); |
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| 330 | } |
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| 331 | |
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[1999] | 332 | typedef AlterationNotifier<UEdgeSetExtender, Edge> EdgeNotifier; |
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| 333 | typedef AlterationNotifier<UEdgeSetExtender, UEdge> UEdgeNotifier; |
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[1979] | 334 | |
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| 335 | |
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| 336 | protected: |
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| 337 | |
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| 338 | mutable EdgeNotifier edge_notifier; |
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| 339 | mutable UEdgeNotifier uedge_notifier; |
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| 340 | |
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| 341 | public: |
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[1991] | 342 | |
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| 343 | using Parent::getNotifier; |
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[1979] | 344 | |
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| 345 | EdgeNotifier& getNotifier(Edge) const { |
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| 346 | return edge_notifier; |
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| 347 | } |
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| 348 | |
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| 349 | UEdgeNotifier& getNotifier(UEdge) const { |
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| 350 | return uedge_notifier; |
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| 351 | } |
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| 352 | |
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| 353 | |
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| 354 | class NodeIt : public Node { |
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| 355 | const Graph* graph; |
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| 356 | public: |
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| 357 | |
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| 358 | NodeIt() {} |
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| 359 | |
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| 360 | NodeIt(Invalid i) : Node(i) { } |
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| 361 | |
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| 362 | explicit NodeIt(const Graph& _graph) : graph(&_graph) { |
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[2031] | 363 | _graph.first(static_cast<Node&>(*this)); |
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[1979] | 364 | } |
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| 365 | |
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| 366 | NodeIt(const Graph& _graph, const Node& node) |
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| 367 | : Node(node), graph(&_graph) {} |
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| 368 | |
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| 369 | NodeIt& operator++() { |
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| 370 | graph->next(*this); |
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| 371 | return *this; |
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| 372 | } |
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| 373 | |
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| 374 | }; |
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| 375 | |
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| 376 | |
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| 377 | class EdgeIt : public Edge { |
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| 378 | const Graph* graph; |
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| 379 | public: |
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| 380 | |
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| 381 | EdgeIt() { } |
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| 382 | |
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| 383 | EdgeIt(Invalid i) : Edge(i) { } |
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| 384 | |
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| 385 | explicit EdgeIt(const Graph& _graph) : graph(&_graph) { |
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[2031] | 386 | _graph.first(static_cast<Edge&>(*this)); |
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[1979] | 387 | } |
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| 388 | |
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| 389 | EdgeIt(const Graph& _graph, const Edge& e) : |
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| 390 | Edge(e), graph(&_graph) { } |
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| 391 | |
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| 392 | EdgeIt& operator++() { |
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| 393 | graph->next(*this); |
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| 394 | return *this; |
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| 395 | } |
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| 396 | |
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| 397 | }; |
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| 398 | |
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| 399 | |
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| 400 | class OutEdgeIt : public Edge { |
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| 401 | const Graph* graph; |
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| 402 | public: |
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| 403 | |
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| 404 | OutEdgeIt() { } |
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| 405 | |
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| 406 | OutEdgeIt(Invalid i) : Edge(i) { } |
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| 407 | |
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| 408 | OutEdgeIt(const Graph& _graph, const Node& node) |
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| 409 | : graph(&_graph) { |
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| 410 | _graph.firstOut(*this, node); |
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| 411 | } |
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| 412 | |
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| 413 | OutEdgeIt(const Graph& _graph, const Edge& edge) |
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| 414 | : Edge(edge), graph(&_graph) {} |
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| 415 | |
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| 416 | OutEdgeIt& operator++() { |
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| 417 | graph->nextOut(*this); |
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| 418 | return *this; |
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| 419 | } |
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| 420 | |
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| 421 | }; |
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| 422 | |
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| 423 | |
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| 424 | class InEdgeIt : public Edge { |
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| 425 | const Graph* graph; |
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| 426 | public: |
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| 427 | |
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| 428 | InEdgeIt() { } |
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| 429 | |
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| 430 | InEdgeIt(Invalid i) : Edge(i) { } |
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| 431 | |
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| 432 | InEdgeIt(const Graph& _graph, const Node& node) |
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| 433 | : graph(&_graph) { |
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| 434 | _graph.firstIn(*this, node); |
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| 435 | } |
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| 436 | |
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| 437 | InEdgeIt(const Graph& _graph, const Edge& edge) : |
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| 438 | Edge(edge), graph(&_graph) {} |
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| 439 | |
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| 440 | InEdgeIt& operator++() { |
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| 441 | graph->nextIn(*this); |
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| 442 | return *this; |
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| 443 | } |
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| 444 | |
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| 445 | }; |
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| 446 | |
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| 447 | |
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| 448 | class UEdgeIt : public Parent::UEdge { |
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| 449 | const Graph* graph; |
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| 450 | public: |
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| 451 | |
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| 452 | UEdgeIt() { } |
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| 453 | |
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| 454 | UEdgeIt(Invalid i) : UEdge(i) { } |
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| 455 | |
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| 456 | explicit UEdgeIt(const Graph& _graph) : graph(&_graph) { |
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[2031] | 457 | _graph.first(static_cast<UEdge&>(*this)); |
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[1979] | 458 | } |
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| 459 | |
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| 460 | UEdgeIt(const Graph& _graph, const UEdge& e) : |
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| 461 | UEdge(e), graph(&_graph) { } |
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| 462 | |
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| 463 | UEdgeIt& operator++() { |
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| 464 | graph->next(*this); |
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| 465 | return *this; |
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| 466 | } |
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| 467 | |
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| 468 | }; |
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| 469 | |
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| 470 | class IncEdgeIt : public Parent::UEdge { |
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| 471 | friend class UEdgeSetExtender; |
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| 472 | const Graph* graph; |
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| 473 | bool direction; |
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| 474 | public: |
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| 475 | |
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| 476 | IncEdgeIt() { } |
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| 477 | |
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| 478 | IncEdgeIt(Invalid i) : UEdge(i), direction(false) { } |
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| 479 | |
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| 480 | IncEdgeIt(const Graph& _graph, const Node &n) : graph(&_graph) { |
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| 481 | _graph.firstInc(*this, direction, n); |
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| 482 | } |
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| 483 | |
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| 484 | IncEdgeIt(const Graph& _graph, const UEdge &ue, const Node &n) |
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| 485 | : graph(&_graph), UEdge(ue) { |
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| 486 | direction = (_graph.source(ue) == n); |
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| 487 | } |
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| 488 | |
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| 489 | IncEdgeIt& operator++() { |
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| 490 | graph->nextInc(*this, direction); |
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| 491 | return *this; |
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| 492 | } |
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| 493 | }; |
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| 494 | |
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| 495 | /// \brief Base node of the iterator |
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| 496 | /// |
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| 497 | /// Returns the base node (ie. the source in this case) of the iterator |
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| 498 | Node baseNode(const OutEdgeIt &e) const { |
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| 499 | return Parent::source((Edge)e); |
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| 500 | } |
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| 501 | /// \brief Running node of the iterator |
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| 502 | /// |
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| 503 | /// Returns the running node (ie. the target in this case) of the |
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| 504 | /// iterator |
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| 505 | Node runningNode(const OutEdgeIt &e) const { |
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| 506 | return Parent::target((Edge)e); |
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| 507 | } |
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| 508 | |
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| 509 | /// \brief Base node of the iterator |
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| 510 | /// |
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| 511 | /// Returns the base node (ie. the target in this case) of the iterator |
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| 512 | Node baseNode(const InEdgeIt &e) const { |
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| 513 | return Parent::target((Edge)e); |
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| 514 | } |
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| 515 | /// \brief Running node of the iterator |
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| 516 | /// |
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| 517 | /// Returns the running node (ie. the source in this case) of the |
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| 518 | /// iterator |
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| 519 | Node runningNode(const InEdgeIt &e) const { |
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| 520 | return Parent::source((Edge)e); |
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| 521 | } |
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| 522 | |
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| 523 | /// Base node of the iterator |
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| 524 | /// |
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| 525 | /// Returns the base node of the iterator |
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| 526 | Node baseNode(const IncEdgeIt &e) const { |
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| 527 | return e.direction ? source(e) : target(e); |
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| 528 | } |
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| 529 | /// Running node of the iterator |
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| 530 | /// |
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| 531 | /// Returns the running node of the iterator |
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| 532 | Node runningNode(const IncEdgeIt &e) const { |
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| 533 | return e.direction ? target(e) : source(e); |
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| 534 | } |
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| 535 | |
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| 536 | |
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| 537 | template <typename _Value> |
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| 538 | class EdgeMap |
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[1999] | 539 | : public MapExtender<DefaultMap<Graph, Edge, _Value> > { |
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[1979] | 540 | public: |
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| 541 | typedef UEdgeSetExtender Graph; |
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[1999] | 542 | typedef MapExtender<DefaultMap<Graph, Edge, _Value> > Parent; |
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[1979] | 543 | |
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| 544 | EdgeMap(const Graph& _g) |
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| 545 | : Parent(_g) {} |
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| 546 | EdgeMap(const Graph& _g, const _Value& _v) |
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| 547 | : Parent(_g, _v) {} |
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| 548 | |
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| 549 | EdgeMap& operator=(const EdgeMap& cmap) { |
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| 550 | return operator=<EdgeMap>(cmap); |
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| 551 | } |
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| 552 | |
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| 553 | template <typename CMap> |
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| 554 | EdgeMap& operator=(const CMap& cmap) { |
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[2031] | 555 | Parent::operator=(cmap); |
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[1979] | 556 | return *this; |
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| 557 | } |
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[2031] | 558 | |
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[1979] | 559 | }; |
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| 560 | |
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| 561 | |
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| 562 | template <typename _Value> |
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| 563 | class UEdgeMap |
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[1999] | 564 | : public MapExtender<DefaultMap<Graph, UEdge, _Value> > { |
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[1979] | 565 | public: |
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| 566 | typedef UEdgeSetExtender Graph; |
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[1999] | 567 | typedef MapExtender<DefaultMap<Graph, UEdge, _Value> > Parent; |
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[1979] | 568 | |
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| 569 | UEdgeMap(const Graph& _g) |
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| 570 | : Parent(_g) {} |
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[2031] | 571 | |
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[1979] | 572 | UEdgeMap(const Graph& _g, const _Value& _v) |
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| 573 | : Parent(_g, _v) {} |
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| 574 | |
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| 575 | UEdgeMap& operator=(const UEdgeMap& cmap) { |
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| 576 | return operator=<UEdgeMap>(cmap); |
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| 577 | } |
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| 578 | |
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| 579 | template <typename CMap> |
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| 580 | UEdgeMap& operator=(const CMap& cmap) { |
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[2031] | 581 | Parent::operator=(cmap); |
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[1979] | 582 | return *this; |
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| 583 | } |
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[2031] | 584 | |
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[1979] | 585 | }; |
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| 586 | |
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| 587 | |
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| 588 | // Alteration extension |
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| 589 | |
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| 590 | UEdge addEdge(const Node& from, const Node& to) { |
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| 591 | UEdge uedge = Parent::addEdge(from, to); |
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| 592 | getNotifier(UEdge()).add(uedge); |
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| 593 | getNotifier(Edge()).add(Parent::direct(uedge, true)); |
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| 594 | getNotifier(Edge()).add(Parent::direct(uedge, false)); |
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| 595 | return uedge; |
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| 596 | } |
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| 597 | |
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| 598 | void clear() { |
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| 599 | getNotifier(Edge()).clear(); |
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| 600 | getNotifier(UEdge()).clear(); |
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| 601 | Parent::clear(); |
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| 602 | } |
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| 603 | |
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| 604 | void erase(const UEdge& uedge) { |
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| 605 | getNotifier(Edge()).erase(Parent::direct(uedge, true)); |
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| 606 | getNotifier(Edge()).erase(Parent::direct(uedge, false)); |
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| 607 | getNotifier(UEdge()).erase(uedge); |
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| 608 | Parent::erase(uedge); |
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| 609 | } |
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| 610 | |
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| 611 | |
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[1999] | 612 | UEdgeSetExtender() { |
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| 613 | edge_notifier.setContainer(*this); |
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| 614 | uedge_notifier.setContainer(*this); |
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| 615 | } |
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| 616 | |
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[1979] | 617 | ~UEdgeSetExtender() { |
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[1999] | 618 | uedge_notifier.clear(); |
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| 619 | edge_notifier.clear(); |
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[1979] | 620 | } |
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| 621 | |
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| 622 | }; |
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[1996] | 623 | |
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[1979] | 624 | } |
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[1996] | 625 | |
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| 626 | #endif |
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