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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19 | #ifndef LEMON_BITS_UGRAPH_EXTENDER_H |
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20 | #define LEMON_BITS_UGRAPH_EXTENDER_H |
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21 | |
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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/map_extender.h> |
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26 | #include <lemon/bits/default_map.h> |
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27 | |
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28 | #include <lemon/concept_check.h> |
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29 | #include <lemon/concept/maps.h> |
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30 | |
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31 | ///\ingroup graphbits |
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32 | ///\file |
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33 | ///\brief Extenders for the graph types |
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34 | namespace lemon { |
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35 | |
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36 | /// \ingroup graphbits |
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37 | /// |
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38 | /// \brief Extender for the UGraphs |
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39 | template <typename Base> |
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40 | class UGraphExtender : public Base { |
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41 | public: |
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42 | |
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43 | typedef Base Parent; |
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44 | typedef UGraphExtender Graph; |
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45 | |
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46 | typedef typename Parent::Node Node; |
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47 | typedef typename Parent::Edge Edge; |
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48 | typedef typename Parent::UEdge UEdge; |
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49 | |
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50 | // UGraph extension |
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51 | |
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52 | int maxId(Node) const { |
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53 | return Parent::maxNodeId(); |
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54 | } |
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55 | |
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56 | int maxId(Edge) const { |
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57 | return Parent::maxEdgeId(); |
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58 | } |
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59 | |
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60 | int maxId(UEdge) const { |
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61 | return Parent::maxUEdgeId(); |
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62 | } |
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63 | |
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64 | Node fromId(int id, Node) const { |
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65 | return Parent::nodeFromId(id); |
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66 | } |
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67 | |
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68 | Edge fromId(int id, Edge) const { |
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69 | return Parent::edgeFromId(id); |
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70 | } |
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71 | |
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72 | UEdge fromId(int id, UEdge) const { |
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73 | return Parent::uEdgeFromId(id); |
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74 | } |
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75 | |
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76 | Node oppositeNode(const Node &n, const UEdge &e) const { |
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77 | if( n == Parent::source(e)) |
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78 | return Parent::target(e); |
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79 | else if( n == Parent::target(e)) |
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80 | return Parent::source(e); |
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81 | else |
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82 | return INVALID; |
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83 | } |
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84 | |
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85 | Edge oppositeEdge(const Edge &e) const { |
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86 | return Parent::direct(e, !Parent::direction(e)); |
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87 | } |
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88 | |
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89 | using Parent::direct; |
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90 | Edge direct(const UEdge &ue, const Node &s) const { |
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91 | return Parent::direct(ue, Parent::source(ue) == s); |
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92 | } |
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93 | |
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94 | // Alterable extension |
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95 | |
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96 | typedef AlterationNotifier<UGraphExtender, Node> NodeNotifier; |
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97 | typedef AlterationNotifier<UGraphExtender, Edge> EdgeNotifier; |
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98 | typedef AlterationNotifier<UGraphExtender, UEdge> UEdgeNotifier; |
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99 | |
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100 | |
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101 | protected: |
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102 | |
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103 | mutable NodeNotifier node_notifier; |
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104 | mutable EdgeNotifier edge_notifier; |
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105 | mutable UEdgeNotifier uedge_notifier; |
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106 | |
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107 | public: |
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108 | |
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109 | NodeNotifier& getNotifier(Node) const { |
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110 | return node_notifier; |
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111 | } |
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112 | |
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113 | EdgeNotifier& getNotifier(Edge) const { |
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114 | return edge_notifier; |
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115 | } |
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116 | |
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117 | UEdgeNotifier& getNotifier(UEdge) const { |
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118 | return uedge_notifier; |
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119 | } |
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120 | |
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121 | |
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122 | |
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123 | class NodeIt : public Node { |
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124 | const Graph* graph; |
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125 | public: |
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126 | |
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127 | NodeIt() {} |
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128 | |
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129 | NodeIt(Invalid i) : Node(i) { } |
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130 | |
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131 | explicit NodeIt(const Graph& _graph) : graph(&_graph) { |
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132 | _graph.first(static_cast<Node&>(*this)); |
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133 | } |
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134 | |
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135 | NodeIt(const Graph& _graph, const Node& node) |
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136 | : Node(node), graph(&_graph) {} |
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137 | |
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138 | NodeIt& operator++() { |
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139 | graph->next(*this); |
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140 | return *this; |
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141 | } |
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142 | |
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143 | }; |
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144 | |
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145 | |
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146 | class EdgeIt : public Edge { |
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147 | const Graph* graph; |
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148 | public: |
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149 | |
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150 | EdgeIt() { } |
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151 | |
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152 | EdgeIt(Invalid i) : Edge(i) { } |
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153 | |
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154 | explicit EdgeIt(const Graph& _graph) : graph(&_graph) { |
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155 | _graph.first(static_cast<Edge&>(*this)); |
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156 | } |
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157 | |
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158 | EdgeIt(const Graph& _graph, const Edge& e) : |
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159 | Edge(e), graph(&_graph) { } |
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160 | |
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161 | EdgeIt& operator++() { |
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162 | graph->next(*this); |
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163 | return *this; |
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164 | } |
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165 | |
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166 | }; |
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167 | |
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168 | |
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169 | class OutEdgeIt : public Edge { |
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170 | const Graph* graph; |
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171 | public: |
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172 | |
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173 | OutEdgeIt() { } |
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174 | |
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175 | OutEdgeIt(Invalid i) : Edge(i) { } |
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176 | |
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177 | OutEdgeIt(const Graph& _graph, const Node& node) |
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178 | : graph(&_graph) { |
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179 | _graph.firstOut(*this, node); |
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180 | } |
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181 | |
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182 | OutEdgeIt(const Graph& _graph, const Edge& edge) |
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183 | : Edge(edge), graph(&_graph) {} |
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184 | |
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185 | OutEdgeIt& operator++() { |
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186 | graph->nextOut(*this); |
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187 | return *this; |
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188 | } |
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189 | |
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190 | }; |
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191 | |
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192 | |
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193 | class InEdgeIt : public Edge { |
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194 | const Graph* graph; |
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195 | public: |
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196 | |
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197 | InEdgeIt() { } |
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198 | |
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199 | InEdgeIt(Invalid i) : Edge(i) { } |
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200 | |
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201 | InEdgeIt(const Graph& _graph, const Node& node) |
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202 | : graph(&_graph) { |
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203 | _graph.firstIn(*this, node); |
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204 | } |
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205 | |
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206 | InEdgeIt(const Graph& _graph, const Edge& edge) : |
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207 | Edge(edge), graph(&_graph) {} |
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208 | |
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209 | InEdgeIt& operator++() { |
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210 | graph->nextIn(*this); |
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211 | return *this; |
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212 | } |
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213 | |
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214 | }; |
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215 | |
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216 | |
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217 | class UEdgeIt : public Parent::UEdge { |
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218 | const Graph* graph; |
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219 | public: |
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220 | |
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221 | UEdgeIt() { } |
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222 | |
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223 | UEdgeIt(Invalid i) : UEdge(i) { } |
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224 | |
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225 | explicit UEdgeIt(const Graph& _graph) : graph(&_graph) { |
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226 | _graph.first(static_cast<UEdge&>(*this)); |
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227 | } |
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228 | |
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229 | UEdgeIt(const Graph& _graph, const UEdge& e) : |
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230 | UEdge(e), graph(&_graph) { } |
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231 | |
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232 | UEdgeIt& operator++() { |
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233 | graph->next(*this); |
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234 | return *this; |
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235 | } |
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236 | |
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237 | }; |
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238 | |
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239 | class IncEdgeIt : public Parent::UEdge { |
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240 | friend class UGraphExtender; |
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241 | const Graph* graph; |
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242 | bool direction; |
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243 | public: |
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244 | |
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245 | IncEdgeIt() { } |
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246 | |
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247 | IncEdgeIt(Invalid i) : UEdge(i), direction(false) { } |
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248 | |
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249 | IncEdgeIt(const Graph& _graph, const Node &n) : graph(&_graph) { |
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250 | _graph.firstInc(*this, direction, n); |
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251 | } |
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252 | |
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253 | IncEdgeIt(const Graph& _graph, const UEdge &ue, const Node &n) |
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254 | : graph(&_graph), UEdge(ue) { |
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255 | direction = (_graph.source(ue) == n); |
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256 | } |
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257 | |
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258 | IncEdgeIt& operator++() { |
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259 | graph->nextInc(*this, direction); |
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260 | return *this; |
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261 | } |
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262 | }; |
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263 | |
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264 | /// \brief Base node of the iterator |
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265 | /// |
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266 | /// Returns the base node (ie. the source in this case) of the iterator |
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267 | Node baseNode(const OutEdgeIt &e) const { |
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268 | return Parent::source((Edge)e); |
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269 | } |
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270 | /// \brief Running node of the iterator |
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271 | /// |
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272 | /// Returns the running node (ie. the target in this case) of the |
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273 | /// iterator |
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274 | Node runningNode(const OutEdgeIt &e) const { |
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275 | return Parent::target((Edge)e); |
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276 | } |
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277 | |
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278 | /// \brief Base node of the iterator |
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279 | /// |
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280 | /// Returns the base node (ie. the target in this case) of the iterator |
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281 | Node baseNode(const InEdgeIt &e) const { |
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282 | return Parent::target((Edge)e); |
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283 | } |
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284 | /// \brief Running node of the iterator |
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285 | /// |
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286 | /// Returns the running node (ie. the source in this case) of the |
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287 | /// iterator |
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288 | Node runningNode(const InEdgeIt &e) const { |
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289 | return Parent::source((Edge)e); |
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290 | } |
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291 | |
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292 | /// Base node of the iterator |
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293 | /// |
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294 | /// Returns the base node of the iterator |
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295 | Node baseNode(const IncEdgeIt &e) const { |
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296 | return e.direction ? source(e) : target(e); |
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297 | } |
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298 | /// Running node of the iterator |
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299 | /// |
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300 | /// Returns the running node of the iterator |
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301 | Node runningNode(const IncEdgeIt &e) const { |
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302 | return e.direction ? target(e) : source(e); |
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303 | } |
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304 | |
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305 | // Mappable extension |
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306 | |
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307 | template <typename _Value> |
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308 | class NodeMap |
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309 | : public MapExtender<DefaultMap<Graph, Node, _Value> > { |
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310 | public: |
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311 | typedef UGraphExtender Graph; |
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312 | typedef MapExtender<DefaultMap<Graph, Node, _Value> > Parent; |
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313 | |
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314 | NodeMap(const Graph& graph) |
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315 | : Parent(graph) {} |
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316 | NodeMap(const Graph& graph, const _Value& value) |
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317 | : Parent(graph, value) {} |
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318 | |
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319 | NodeMap& operator=(const NodeMap& cmap) { |
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320 | return operator=<NodeMap>(cmap); |
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321 | } |
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322 | |
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323 | template <typename CMap> |
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324 | NodeMap& operator=(const CMap& cmap) { |
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325 | Parent::operator=(cmap); |
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326 | return *this; |
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327 | } |
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328 | |
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329 | }; |
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330 | |
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331 | template <typename _Value> |
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332 | class EdgeMap |
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333 | : public MapExtender<DefaultMap<Graph, Edge, _Value> > { |
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334 | public: |
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335 | typedef UGraphExtender Graph; |
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336 | typedef MapExtender<DefaultMap<Graph, Edge, _Value> > Parent; |
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337 | |
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338 | EdgeMap(const Graph& graph) |
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339 | : Parent(graph) {} |
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340 | EdgeMap(const Graph& graph, const _Value& value) |
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341 | : Parent(graph, value) {} |
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342 | |
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343 | EdgeMap& operator=(const EdgeMap& cmap) { |
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344 | return operator=<EdgeMap>(cmap); |
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345 | } |
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346 | |
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347 | template <typename CMap> |
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348 | EdgeMap& operator=(const CMap& cmap) { |
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349 | Parent::operator=(cmap); |
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350 | return *this; |
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351 | } |
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352 | }; |
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353 | |
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354 | |
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355 | template <typename _Value> |
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356 | class UEdgeMap |
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357 | : public MapExtender<DefaultMap<Graph, UEdge, _Value> > { |
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358 | public: |
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359 | typedef UGraphExtender Graph; |
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360 | typedef MapExtender<DefaultMap<Graph, UEdge, _Value> > Parent; |
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361 | |
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362 | UEdgeMap(const Graph& graph) |
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363 | : Parent(graph) {} |
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364 | |
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365 | UEdgeMap(const Graph& graph, const _Value& value) |
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366 | : Parent(graph, value) {} |
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367 | |
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368 | UEdgeMap& operator=(const UEdgeMap& cmap) { |
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369 | return operator=<UEdgeMap>(cmap); |
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370 | } |
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371 | |
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372 | template <typename CMap> |
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373 | UEdgeMap& operator=(const CMap& cmap) { |
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374 | Parent::operator=(cmap); |
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375 | return *this; |
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376 | } |
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377 | |
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378 | }; |
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379 | |
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380 | // Alteration extension |
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381 | |
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382 | Node addNode() { |
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383 | Node node = Parent::addNode(); |
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384 | getNotifier(Node()).add(node); |
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385 | return node; |
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386 | } |
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387 | |
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388 | UEdge addEdge(const Node& from, const Node& to) { |
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389 | UEdge uedge = Parent::addEdge(from, to); |
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390 | getNotifier(UEdge()).add(uedge); |
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391 | getNotifier(Edge()).add(Parent::direct(uedge, true)); |
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392 | getNotifier(Edge()).add(Parent::direct(uedge, false)); |
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393 | return uedge; |
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394 | } |
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395 | |
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396 | void clear() { |
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397 | getNotifier(Edge()).clear(); |
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398 | getNotifier(UEdge()).clear(); |
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399 | getNotifier(Node()).clear(); |
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400 | Parent::clear(); |
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401 | } |
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402 | |
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403 | void erase(const Node& node) { |
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404 | Edge edge; |
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405 | Parent::firstOut(edge, node); |
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406 | while (edge != INVALID ) { |
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407 | erase(edge); |
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408 | Parent::firstOut(edge, node); |
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409 | } |
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410 | |
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411 | Parent::firstIn(edge, node); |
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412 | while (edge != INVALID ) { |
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413 | erase(edge); |
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414 | Parent::firstIn(edge, node); |
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415 | } |
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416 | |
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417 | getNotifier(Node()).erase(node); |
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418 | Parent::erase(node); |
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419 | } |
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420 | |
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421 | void erase(const UEdge& uedge) { |
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422 | getNotifier(Edge()).erase(Parent::direct(uedge, true)); |
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423 | getNotifier(Edge()).erase(Parent::direct(uedge, false)); |
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424 | getNotifier(UEdge()).erase(uedge); |
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425 | Parent::erase(uedge); |
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426 | } |
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427 | |
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428 | UGraphExtender() { |
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429 | node_notifier.setContainer(*this); |
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430 | edge_notifier.setContainer(*this); |
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431 | uedge_notifier.setContainer(*this); |
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432 | } |
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433 | |
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434 | ~UGraphExtender() { |
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435 | uedge_notifier.clear(); |
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436 | edge_notifier.clear(); |
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437 | node_notifier.clear(); |
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438 | } |
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439 | |
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440 | }; |
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441 | |
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442 | } |
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443 | |
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444 | #endif |
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