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1 |
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2 /* -*- C++ -*- |
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3 * |
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4 * This file is a part of LEMON, a generic C++ optimization library |
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5 * |
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6 * Copyright (C) 2003-2007 |
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7 * Egervary Jeno Kombinatorikus Optimalizalasi Kutatocsoport |
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8 * (Egervary Research Group on Combinatorial Optimization, EGRES). |
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9 * |
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10 * Permission to use, modify and distribute this software is granted |
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11 * provided that this copyright notice appears in all copies. For |
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12 * precise terms see the accompanying LICENSE file. |
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13 * |
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14 * This software is provided "AS IS" with no warranty of any kind, |
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15 * express or implied, and with no claim as to its suitability for any |
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16 * purpose. |
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17 * |
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18 */ |
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19 |
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20 #ifndef LEMON_BITS_TRAITS_H |
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21 #define LEMON_BITS_TRAITS_H |
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22 |
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23 #include <lemon/bits/utility.h> |
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24 |
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25 ///\file |
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26 ///\brief Traits for graphs and maps |
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27 /// |
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28 |
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29 namespace lemon { |
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30 template <typename _Graph, typename _Item> |
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31 class ItemSetTraits {}; |
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32 |
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33 |
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34 template <typename Graph, typename Enable = void> |
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35 struct NodeNotifierIndicator { |
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36 typedef InvalidType Type; |
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37 }; |
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38 template <typename Graph> |
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39 struct NodeNotifierIndicator< |
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40 Graph, |
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41 typename enable_if<typename Graph::NodeNotifier::Notifier, void>::type |
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42 > { |
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43 typedef typename Graph::NodeNotifier Type; |
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44 }; |
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45 |
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46 template <typename _Graph> |
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47 class ItemSetTraits<_Graph, typename _Graph::Node> { |
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48 public: |
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49 |
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50 typedef _Graph Graph; |
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51 |
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52 typedef typename Graph::Node Item; |
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53 typedef typename Graph::NodeIt ItemIt; |
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54 |
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55 typedef typename NodeNotifierIndicator<Graph>::Type ItemNotifier; |
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56 |
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57 template <typename _Value> |
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58 class Map : public Graph::template NodeMap<_Value> { |
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59 public: |
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60 typedef typename Graph::template NodeMap<_Value> Parent; |
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61 typedef typename Graph::template NodeMap<_Value> Type; |
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62 typedef typename Parent::Value Value; |
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63 |
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64 Map(const Graph& _digraph) : Parent(_digraph) {} |
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65 Map(const Graph& _digraph, const Value& _value) |
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66 : Parent(_digraph, _value) {} |
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67 |
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68 }; |
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69 |
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70 }; |
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71 |
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72 template <typename Graph, typename Enable = void> |
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73 struct ArcNotifierIndicator { |
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74 typedef InvalidType Type; |
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75 }; |
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76 template <typename Graph> |
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77 struct ArcNotifierIndicator< |
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78 Graph, |
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79 typename enable_if<typename Graph::ArcNotifier::Notifier, void>::type |
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80 > { |
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81 typedef typename Graph::ArcNotifier Type; |
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82 }; |
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83 |
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84 template <typename _Graph> |
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85 class ItemSetTraits<_Graph, typename _Graph::Arc> { |
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86 public: |
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87 |
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88 typedef _Graph Graph; |
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89 |
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90 typedef typename Graph::Arc Item; |
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91 typedef typename Graph::ArcIt ItemIt; |
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92 |
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93 typedef typename ArcNotifierIndicator<Graph>::Type ItemNotifier; |
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94 |
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95 template <typename _Value> |
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96 class Map : public Graph::template ArcMap<_Value> { |
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97 public: |
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98 typedef typename Graph::template ArcMap<_Value> Parent; |
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99 typedef typename Graph::template ArcMap<_Value> Type; |
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100 typedef typename Parent::Value Value; |
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101 |
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102 Map(const Graph& _digraph) : Parent(_digraph) {} |
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103 Map(const Graph& _digraph, const Value& _value) |
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104 : Parent(_digraph, _value) {} |
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105 }; |
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106 |
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107 }; |
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108 |
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109 template <typename Graph, typename Enable = void> |
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110 struct EdgeNotifierIndicator { |
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111 typedef InvalidType Type; |
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112 }; |
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113 template <typename Graph> |
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114 struct EdgeNotifierIndicator< |
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115 Graph, |
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116 typename enable_if<typename Graph::EdgeNotifier::Notifier, void>::type |
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117 > { |
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118 typedef typename Graph::EdgeNotifier Type; |
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119 }; |
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120 |
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121 template <typename _Graph> |
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122 class ItemSetTraits<_Graph, typename _Graph::Edge> { |
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123 public: |
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124 |
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125 typedef _Graph Graph; |
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126 |
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127 typedef typename Graph::Edge Item; |
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128 typedef typename Graph::EdgeIt ItemIt; |
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129 |
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130 typedef typename EdgeNotifierIndicator<Graph>::Type ItemNotifier; |
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131 |
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132 template <typename _Value> |
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133 class Map : public Graph::template EdgeMap<_Value> { |
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134 public: |
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135 typedef typename Graph::template EdgeMap<_Value> Parent; |
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136 typedef typename Graph::template EdgeMap<_Value> Type; |
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137 typedef typename Parent::Value Value; |
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138 |
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139 Map(const Graph& _digraph) : Parent(_digraph) {} |
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140 Map(const Graph& _digraph, const Value& _value) |
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141 : Parent(_digraph, _value) {} |
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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 template <typename Map, typename Enable = void> |
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147 struct MapTraits { |
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148 typedef False ReferenceMapTag; |
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149 |
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150 typedef typename Map::Key Key; |
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151 typedef typename Map::Value Value; |
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152 |
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153 typedef const Value ConstReturnValue; |
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154 typedef const Value ReturnValue; |
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155 }; |
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156 |
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157 template <typename Map> |
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158 struct MapTraits< |
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159 Map, typename enable_if<typename Map::ReferenceMapTag, void>::type > |
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160 { |
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161 typedef True ReferenceMapTag; |
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162 |
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163 typedef typename Map::Key Key; |
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164 typedef typename Map::Value Value; |
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165 |
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166 typedef typename Map::ConstReference ConstReturnValue; |
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167 typedef typename Map::Reference ReturnValue; |
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168 |
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169 typedef typename Map::ConstReference ConstReference; |
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170 typedef typename Map::Reference Reference; |
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171 }; |
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172 |
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173 template <typename MatrixMap, typename Enable = void> |
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174 struct MatrixMapTraits { |
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175 typedef False ReferenceMapTag; |
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176 |
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177 typedef typename MatrixMap::FirstKey FirstKey; |
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178 typedef typename MatrixMap::SecondKey SecondKey; |
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179 typedef typename MatrixMap::Value Value; |
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180 |
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181 typedef const Value ConstReturnValue; |
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182 typedef const Value ReturnValue; |
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183 }; |
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184 |
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185 template <typename MatrixMap> |
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186 struct MatrixMapTraits< |
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187 MatrixMap, typename enable_if<typename MatrixMap::ReferenceMapTag, |
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188 void>::type > |
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189 { |
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190 typedef True ReferenceMapTag; |
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191 |
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192 typedef typename MatrixMap::FirstKey FirstKey; |
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193 typedef typename MatrixMap::SecondKey SecondKey; |
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194 typedef typename MatrixMap::Value Value; |
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195 |
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196 typedef typename MatrixMap::ConstReference ConstReturnValue; |
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197 typedef typename MatrixMap::Reference ReturnValue; |
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198 |
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199 typedef typename MatrixMap::ConstReference ConstReference; |
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200 typedef typename MatrixMap::Reference Reference; |
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201 }; |
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202 |
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203 // Indicators for the tags |
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204 |
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205 template <typename Graph, typename Enable = void> |
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206 struct NodeNumTagIndicator { |
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207 static const bool value = false; |
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208 }; |
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209 |
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210 template <typename Graph> |
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211 struct NodeNumTagIndicator< |
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212 Graph, |
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213 typename enable_if<typename Graph::NodeNumTag, void>::type |
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214 > { |
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215 static const bool value = true; |
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216 }; |
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217 |
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218 template <typename Graph, typename Enable = void> |
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219 struct ArcNumTagIndicator { |
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220 static const bool value = false; |
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221 }; |
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222 |
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223 template <typename Graph> |
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224 struct ArcNumTagIndicator< |
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225 Graph, |
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226 typename enable_if<typename Graph::ArcNumTag, void>::type |
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227 > { |
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228 static const bool value = true; |
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229 }; |
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230 |
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231 template <typename Graph, typename Enable = void> |
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232 struct FindArcTagIndicator { |
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233 static const bool value = false; |
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234 }; |
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235 |
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236 template <typename Graph> |
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237 struct FindArcTagIndicator< |
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238 Graph, |
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239 typename enable_if<typename Graph::FindArcTag, void>::type |
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240 > { |
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241 static const bool value = true; |
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242 }; |
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243 |
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244 template <typename Graph, typename Enable = void> |
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245 struct UndirectedTagIndicator { |
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246 static const bool value = false; |
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247 }; |
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248 |
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249 template <typename Graph> |
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250 struct UndirectedTagIndicator< |
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251 Graph, |
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252 typename enable_if<typename Graph::UndirectedTag, void>::type |
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253 > { |
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254 static const bool value = true; |
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255 }; |
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256 |
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257 template <typename Graph, typename Enable = void> |
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258 struct BuildTagIndicator { |
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259 static const bool value = false; |
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260 }; |
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261 |
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262 template <typename Graph> |
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263 struct BuildTagIndicator< |
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264 Graph, |
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265 typename enable_if<typename Graph::BuildTag, void>::type |
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266 > { |
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267 static const bool value = true; |
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268 }; |
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269 |
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270 } |
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271 |
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272 #endif |