1 | /* -*- mode: C++; indent-tabs-mode: nil; -*- |
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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) 2003-2011 |
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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_GRAPH_ADAPTOR_EXTENDER_H |
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20 | #define LEMON_BITS_GRAPH_ADAPTOR_EXTENDER_H |
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21 | |
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22 | #include <lemon/core.h> |
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23 | #include <lemon/error.h> |
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24 | |
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25 | namespace lemon { |
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26 | |
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27 | template <typename _Digraph> |
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28 | class DigraphAdaptorExtender : public _Digraph { |
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29 | typedef _Digraph Parent; |
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30 | |
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31 | public: |
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32 | |
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33 | typedef _Digraph Digraph; |
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34 | typedef DigraphAdaptorExtender Adaptor; |
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35 | |
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36 | // Base extensions |
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37 | |
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38 | typedef typename Parent::Node Node; |
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39 | typedef typename Parent::Arc Arc; |
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40 | |
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41 | int maxId(Node) const { |
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42 | return Parent::maxNodeId(); |
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43 | } |
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44 | |
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45 | int maxId(Arc) const { |
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46 | return Parent::maxArcId(); |
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47 | } |
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48 | |
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49 | Node fromId(int id, Node) const { |
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50 | return Parent::nodeFromId(id); |
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51 | } |
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52 | |
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53 | Arc fromId(int id, Arc) const { |
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54 | return Parent::arcFromId(id); |
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55 | } |
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56 | |
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57 | Node oppositeNode(const Node &n, const Arc &e) const { |
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58 | if (n == Parent::source(e)) |
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59 | return Parent::target(e); |
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60 | else if(n==Parent::target(e)) |
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61 | return Parent::source(e); |
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62 | else |
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63 | return INVALID; |
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64 | } |
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65 | |
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66 | class NodeIt : public Node { |
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67 | const Adaptor* _adaptor; |
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68 | public: |
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69 | |
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70 | NodeIt() {} |
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71 | |
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72 | NodeIt(Invalid i) : Node(i) { } |
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73 | |
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74 | explicit NodeIt(const Adaptor& adaptor) : _adaptor(&adaptor) { |
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75 | _adaptor->first(static_cast<Node&>(*this)); |
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76 | } |
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77 | |
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78 | NodeIt(const Adaptor& adaptor, const Node& node) |
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79 | : Node(node), _adaptor(&adaptor) {} |
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80 | |
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81 | NodeIt& operator++() { |
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82 | _adaptor->next(*this); |
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83 | return *this; |
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84 | } |
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85 | |
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86 | }; |
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87 | |
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88 | |
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89 | class ArcIt : public Arc { |
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90 | const Adaptor* _adaptor; |
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91 | public: |
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92 | |
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93 | ArcIt() { } |
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94 | |
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95 | ArcIt(Invalid i) : Arc(i) { } |
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96 | |
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97 | explicit ArcIt(const Adaptor& adaptor) : _adaptor(&adaptor) { |
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98 | _adaptor->first(static_cast<Arc&>(*this)); |
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99 | } |
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100 | |
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101 | ArcIt(const Adaptor& adaptor, const Arc& e) : |
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102 | Arc(e), _adaptor(&adaptor) { } |
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103 | |
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104 | ArcIt& operator++() { |
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105 | _adaptor->next(*this); |
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106 | return *this; |
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107 | } |
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108 | |
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109 | }; |
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110 | |
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111 | |
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112 | class OutArcIt : public Arc { |
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113 | const Adaptor* _adaptor; |
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114 | public: |
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115 | |
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116 | OutArcIt() { } |
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117 | |
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118 | OutArcIt(Invalid i) : Arc(i) { } |
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119 | |
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120 | OutArcIt(const Adaptor& adaptor, const Node& node) |
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121 | : _adaptor(&adaptor) { |
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122 | _adaptor->firstOut(*this, node); |
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123 | } |
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124 | |
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125 | OutArcIt(const Adaptor& adaptor, const Arc& arc) |
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126 | : Arc(arc), _adaptor(&adaptor) {} |
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127 | |
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128 | OutArcIt& operator++() { |
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129 | _adaptor->nextOut(*this); |
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130 | return *this; |
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131 | } |
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132 | |
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133 | }; |
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134 | |
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135 | |
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136 | class InArcIt : public Arc { |
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137 | const Adaptor* _adaptor; |
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138 | public: |
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139 | |
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140 | InArcIt() { } |
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141 | |
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142 | InArcIt(Invalid i) : Arc(i) { } |
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143 | |
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144 | InArcIt(const Adaptor& adaptor, const Node& node) |
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145 | : _adaptor(&adaptor) { |
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146 | _adaptor->firstIn(*this, node); |
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147 | } |
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148 | |
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149 | InArcIt(const Adaptor& adaptor, const Arc& arc) : |
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150 | Arc(arc), _adaptor(&adaptor) {} |
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151 | |
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152 | InArcIt& operator++() { |
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153 | _adaptor->nextIn(*this); |
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154 | return *this; |
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155 | } |
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156 | |
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157 | }; |
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158 | |
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159 | Node baseNode(const OutArcIt &e) const { |
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160 | return Parent::source(e); |
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161 | } |
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162 | Node runningNode(const OutArcIt &e) const { |
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163 | return Parent::target(e); |
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164 | } |
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165 | |
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166 | Node baseNode(const InArcIt &e) const { |
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167 | return Parent::target(e); |
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168 | } |
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169 | Node runningNode(const InArcIt &e) const { |
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170 | return Parent::source(e); |
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171 | } |
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172 | |
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173 | }; |
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174 | |
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175 | template <typename _Graph> |
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176 | class GraphAdaptorExtender : public _Graph { |
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177 | typedef _Graph Parent; |
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178 | |
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179 | public: |
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180 | |
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181 | typedef _Graph Graph; |
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182 | typedef GraphAdaptorExtender Adaptor; |
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183 | |
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184 | typedef True UndirectedTag; |
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185 | |
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186 | typedef typename Parent::Node Node; |
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187 | typedef typename Parent::Arc Arc; |
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188 | typedef typename Parent::Edge Edge; |
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189 | |
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190 | // Graph extension |
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191 | |
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192 | int maxId(Node) const { |
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193 | return Parent::maxNodeId(); |
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194 | } |
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195 | |
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196 | int maxId(Arc) const { |
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197 | return Parent::maxArcId(); |
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198 | } |
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199 | |
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200 | int maxId(Edge) const { |
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201 | return Parent::maxEdgeId(); |
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202 | } |
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203 | |
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204 | Node fromId(int id, Node) const { |
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205 | return Parent::nodeFromId(id); |
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206 | } |
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207 | |
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208 | Arc fromId(int id, Arc) const { |
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209 | return Parent::arcFromId(id); |
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210 | } |
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211 | |
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212 | Edge fromId(int id, Edge) const { |
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213 | return Parent::edgeFromId(id); |
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214 | } |
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215 | |
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216 | Node oppositeNode(const Node &n, const Edge &e) const { |
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217 | if( n == Parent::u(e)) |
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218 | return Parent::v(e); |
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219 | else if( n == Parent::v(e)) |
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220 | return Parent::u(e); |
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221 | else |
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222 | return INVALID; |
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223 | } |
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224 | |
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225 | Arc oppositeArc(const Arc &a) const { |
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226 | return Parent::direct(a, !Parent::direction(a)); |
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227 | } |
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228 | |
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229 | using Parent::direct; |
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230 | Arc direct(const Edge &e, const Node &s) const { |
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231 | return Parent::direct(e, Parent::u(e) == s); |
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232 | } |
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233 | |
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234 | |
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235 | class NodeIt : public Node { |
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236 | const Adaptor* _adaptor; |
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237 | public: |
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238 | |
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239 | NodeIt() {} |
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240 | |
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241 | NodeIt(Invalid i) : Node(i) { } |
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242 | |
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243 | explicit NodeIt(const Adaptor& adaptor) : _adaptor(&adaptor) { |
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244 | _adaptor->first(static_cast<Node&>(*this)); |
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245 | } |
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246 | |
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247 | NodeIt(const Adaptor& adaptor, const Node& node) |
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248 | : Node(node), _adaptor(&adaptor) {} |
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249 | |
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250 | NodeIt& operator++() { |
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251 | _adaptor->next(*this); |
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252 | return *this; |
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253 | } |
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254 | |
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255 | }; |
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256 | |
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257 | |
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258 | class ArcIt : public Arc { |
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259 | const Adaptor* _adaptor; |
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260 | public: |
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261 | |
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262 | ArcIt() { } |
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263 | |
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264 | ArcIt(Invalid i) : Arc(i) { } |
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265 | |
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266 | explicit ArcIt(const Adaptor& adaptor) : _adaptor(&adaptor) { |
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267 | _adaptor->first(static_cast<Arc&>(*this)); |
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268 | } |
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269 | |
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270 | ArcIt(const Adaptor& adaptor, const Arc& e) : |
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271 | Arc(e), _adaptor(&adaptor) { } |
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272 | |
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273 | ArcIt& operator++() { |
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274 | _adaptor->next(*this); |
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275 | return *this; |
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276 | } |
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277 | |
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278 | }; |
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279 | |
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280 | |
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281 | class OutArcIt : public Arc { |
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282 | const Adaptor* _adaptor; |
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283 | public: |
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284 | |
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285 | OutArcIt() { } |
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286 | |
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287 | OutArcIt(Invalid i) : Arc(i) { } |
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288 | |
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289 | OutArcIt(const Adaptor& adaptor, const Node& node) |
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290 | : _adaptor(&adaptor) { |
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291 | _adaptor->firstOut(*this, node); |
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292 | } |
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293 | |
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294 | OutArcIt(const Adaptor& adaptor, const Arc& arc) |
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295 | : Arc(arc), _adaptor(&adaptor) {} |
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296 | |
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297 | OutArcIt& operator++() { |
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298 | _adaptor->nextOut(*this); |
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299 | return *this; |
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300 | } |
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301 | |
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302 | }; |
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303 | |
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304 | |
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305 | class InArcIt : public Arc { |
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306 | const Adaptor* _adaptor; |
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307 | public: |
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308 | |
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309 | InArcIt() { } |
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310 | |
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311 | InArcIt(Invalid i) : Arc(i) { } |
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312 | |
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313 | InArcIt(const Adaptor& adaptor, const Node& node) |
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314 | : _adaptor(&adaptor) { |
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315 | _adaptor->firstIn(*this, node); |
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316 | } |
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317 | |
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318 | InArcIt(const Adaptor& adaptor, const Arc& arc) : |
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319 | Arc(arc), _adaptor(&adaptor) {} |
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320 | |
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321 | InArcIt& operator++() { |
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322 | _adaptor->nextIn(*this); |
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323 | return *this; |
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324 | } |
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325 | |
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326 | }; |
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327 | |
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328 | class EdgeIt : public Parent::Edge { |
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329 | const Adaptor* _adaptor; |
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330 | public: |
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331 | |
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332 | EdgeIt() { } |
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333 | |
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334 | EdgeIt(Invalid i) : Edge(i) { } |
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335 | |
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336 | explicit EdgeIt(const Adaptor& adaptor) : _adaptor(&adaptor) { |
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337 | _adaptor->first(static_cast<Edge&>(*this)); |
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338 | } |
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339 | |
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340 | EdgeIt(const Adaptor& adaptor, const Edge& e) : |
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341 | Edge(e), _adaptor(&adaptor) { } |
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342 | |
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343 | EdgeIt& operator++() { |
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344 | _adaptor->next(*this); |
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345 | return *this; |
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346 | } |
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347 | |
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348 | }; |
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349 | |
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350 | class IncEdgeIt : public Edge { |
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351 | friend class GraphAdaptorExtender; |
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352 | const Adaptor* _adaptor; |
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353 | bool direction; |
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354 | public: |
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355 | |
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356 | IncEdgeIt() { } |
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357 | |
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358 | IncEdgeIt(Invalid i) : Edge(i), direction(false) { } |
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359 | |
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360 | IncEdgeIt(const Adaptor& adaptor, const Node &n) : _adaptor(&adaptor) { |
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361 | _adaptor->firstInc(static_cast<Edge&>(*this), direction, n); |
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362 | } |
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363 | |
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364 | IncEdgeIt(const Adaptor& adaptor, const Edge &e, const Node &n) |
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365 | : _adaptor(&adaptor), Edge(e) { |
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366 | direction = (_adaptor->u(e) == n); |
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367 | } |
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368 | |
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369 | IncEdgeIt& operator++() { |
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370 | _adaptor->nextInc(*this, direction); |
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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 | Node baseNode(const OutArcIt &a) const { |
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376 | return Parent::source(a); |
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377 | } |
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378 | Node runningNode(const OutArcIt &a) const { |
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379 | return Parent::target(a); |
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380 | } |
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381 | |
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382 | Node baseNode(const InArcIt &a) const { |
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383 | return Parent::target(a); |
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384 | } |
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385 | Node runningNode(const InArcIt &a) const { |
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386 | return Parent::source(a); |
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387 | } |
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388 | |
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389 | Node baseNode(const IncEdgeIt &e) const { |
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390 | return e.direction ? Parent::u(e) : Parent::v(e); |
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391 | } |
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392 | Node runningNode(const IncEdgeIt &e) const { |
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393 | return e.direction ? Parent::v(e) : Parent::u(e); |
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394 | } |
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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 | |
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401 | #endif |
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