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) 2003-2008 |
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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_TRAITS_H |
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20 | #define LEMON_BITS_TRAITS_H |
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21 | |
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22 | //\file |
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23 | //\brief Traits for graphs and maps |
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24 | // |
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25 | |
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26 | #include <lemon/bits/enable_if.h> |
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27 | |
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28 | namespace lemon { |
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29 | |
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30 | struct InvalidType {}; |
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31 | |
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32 | template <typename _Graph, typename _Item> |
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33 | class ItemSetTraits {}; |
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34 | |
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35 | |
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36 | template <typename Graph, typename Enable = void> |
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37 | struct NodeNotifierIndicator { |
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38 | typedef InvalidType Type; |
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39 | }; |
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40 | template <typename Graph> |
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41 | struct NodeNotifierIndicator< |
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42 | Graph, |
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43 | typename enable_if<typename Graph::NodeNotifier::Notifier, void>::type |
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44 | > { |
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45 | typedef typename Graph::NodeNotifier Type; |
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46 | }; |
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47 | |
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48 | template <typename _Graph> |
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49 | class ItemSetTraits<_Graph, typename _Graph::Node> { |
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50 | public: |
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51 | |
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52 | typedef _Graph Graph; |
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53 | |
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54 | typedef typename Graph::Node Item; |
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55 | typedef typename Graph::NodeIt ItemIt; |
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56 | |
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57 | typedef typename NodeNotifierIndicator<Graph>::Type ItemNotifier; |
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58 | |
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59 | template <typename _Value> |
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60 | class Map : public Graph::template NodeMap<_Value> { |
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61 | public: |
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62 | typedef typename Graph::template NodeMap<_Value> Parent; |
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63 | typedef typename Graph::template NodeMap<_Value> Type; |
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64 | typedef typename Parent::Value Value; |
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65 | |
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66 | Map(const Graph& _digraph) : Parent(_digraph) {} |
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67 | Map(const Graph& _digraph, const Value& _value) |
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68 | : Parent(_digraph, _value) {} |
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69 | |
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70 | }; |
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71 | |
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72 | }; |
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73 | |
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74 | template <typename Graph, typename Enable = void> |
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75 | struct ArcNotifierIndicator { |
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76 | typedef InvalidType Type; |
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77 | }; |
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78 | template <typename Graph> |
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79 | struct ArcNotifierIndicator< |
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80 | Graph, |
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81 | typename enable_if<typename Graph::ArcNotifier::Notifier, void>::type |
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82 | > { |
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83 | typedef typename Graph::ArcNotifier Type; |
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84 | }; |
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85 | |
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86 | template <typename _Graph> |
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87 | class ItemSetTraits<_Graph, typename _Graph::Arc> { |
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88 | public: |
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89 | |
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90 | typedef _Graph Graph; |
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91 | |
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92 | typedef typename Graph::Arc Item; |
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93 | typedef typename Graph::ArcIt ItemIt; |
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94 | |
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95 | typedef typename ArcNotifierIndicator<Graph>::Type ItemNotifier; |
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96 | |
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97 | template <typename _Value> |
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98 | class Map : public Graph::template ArcMap<_Value> { |
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99 | public: |
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100 | typedef typename Graph::template ArcMap<_Value> Parent; |
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101 | typedef typename Graph::template ArcMap<_Value> Type; |
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102 | typedef typename Parent::Value Value; |
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103 | |
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104 | Map(const Graph& _digraph) : Parent(_digraph) {} |
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105 | Map(const Graph& _digraph, const Value& _value) |
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106 | : Parent(_digraph, _value) {} |
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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 | template <typename Graph, typename Enable = void> |
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112 | struct EdgeNotifierIndicator { |
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113 | typedef InvalidType Type; |
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114 | }; |
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115 | template <typename Graph> |
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116 | struct EdgeNotifierIndicator< |
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117 | Graph, |
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118 | typename enable_if<typename Graph::EdgeNotifier::Notifier, void>::type |
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119 | > { |
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120 | typedef typename Graph::EdgeNotifier Type; |
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121 | }; |
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122 | |
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123 | template <typename _Graph> |
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124 | class ItemSetTraits<_Graph, typename _Graph::Edge> { |
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125 | public: |
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126 | |
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127 | typedef _Graph Graph; |
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128 | |
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129 | typedef typename Graph::Edge Item; |
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130 | typedef typename Graph::EdgeIt ItemIt; |
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131 | |
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132 | typedef typename EdgeNotifierIndicator<Graph>::Type ItemNotifier; |
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133 | |
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134 | template <typename _Value> |
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135 | class Map : public Graph::template EdgeMap<_Value> { |
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136 | public: |
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137 | typedef typename Graph::template EdgeMap<_Value> Parent; |
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138 | typedef typename Graph::template EdgeMap<_Value> Type; |
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139 | typedef typename Parent::Value Value; |
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140 | |
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141 | Map(const Graph& _digraph) : Parent(_digraph) {} |
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142 | Map(const Graph& _digraph, const Value& _value) |
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143 | : Parent(_digraph, _value) {} |
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144 | }; |
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145 | |
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146 | }; |
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147 | |
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148 | template <typename Map, typename Enable = void> |
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149 | struct MapTraits { |
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150 | typedef False ReferenceMapTag; |
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151 | |
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152 | typedef typename Map::Key Key; |
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153 | typedef typename Map::Value Value; |
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154 | |
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155 | typedef Value ConstReturnValue; |
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156 | typedef Value ReturnValue; |
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157 | }; |
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158 | |
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159 | template <typename Map> |
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160 | struct MapTraits< |
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161 | Map, typename enable_if<typename Map::ReferenceMapTag, void>::type > |
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162 | { |
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163 | typedef True ReferenceMapTag; |
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164 | |
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165 | typedef typename Map::Key Key; |
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166 | typedef typename Map::Value Value; |
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167 | |
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168 | typedef typename Map::ConstReference ConstReturnValue; |
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169 | typedef typename Map::Reference ReturnValue; |
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170 | |
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171 | typedef typename Map::ConstReference ConstReference; |
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172 | typedef typename Map::Reference Reference; |
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173 | }; |
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174 | |
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175 | template <typename MatrixMap, typename Enable = void> |
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176 | struct MatrixMapTraits { |
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177 | typedef False ReferenceMapTag; |
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178 | |
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179 | typedef typename MatrixMap::FirstKey FirstKey; |
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180 | typedef typename MatrixMap::SecondKey SecondKey; |
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181 | typedef typename MatrixMap::Value Value; |
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182 | |
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183 | typedef Value ConstReturnValue; |
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184 | typedef Value ReturnValue; |
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185 | }; |
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186 | |
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187 | template <typename MatrixMap> |
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188 | struct MatrixMapTraits< |
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189 | MatrixMap, typename enable_if<typename MatrixMap::ReferenceMapTag, |
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190 | void>::type > |
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191 | { |
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192 | typedef True ReferenceMapTag; |
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193 | |
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194 | typedef typename MatrixMap::FirstKey FirstKey; |
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195 | typedef typename MatrixMap::SecondKey SecondKey; |
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196 | typedef typename MatrixMap::Value Value; |
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197 | |
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198 | typedef typename MatrixMap::ConstReference ConstReturnValue; |
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199 | typedef typename MatrixMap::Reference ReturnValue; |
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200 | |
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201 | typedef typename MatrixMap::ConstReference ConstReference; |
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202 | typedef typename MatrixMap::Reference Reference; |
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203 | }; |
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204 | |
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205 | // Indicators for the tags |
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206 | |
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207 | template <typename Graph, typename Enable = void> |
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208 | struct NodeNumTagIndicator { |
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209 | static const bool value = false; |
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210 | }; |
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211 | |
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212 | template <typename Graph> |
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213 | struct NodeNumTagIndicator< |
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214 | Graph, |
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215 | typename enable_if<typename Graph::NodeNumTag, void>::type |
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216 | > { |
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217 | static const bool value = true; |
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218 | }; |
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219 | |
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220 | template <typename Graph, typename Enable = void> |
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221 | struct EdgeNumTagIndicator { |
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222 | static const bool value = false; |
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223 | }; |
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224 | |
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225 | template <typename Graph> |
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226 | struct EdgeNumTagIndicator< |
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227 | Graph, |
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228 | typename enable_if<typename Graph::EdgeNumTag, void>::type |
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229 | > { |
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230 | static const bool value = true; |
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231 | }; |
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232 | |
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233 | template <typename Graph, typename Enable = void> |
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234 | struct FindEdgeTagIndicator { |
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235 | static const bool value = false; |
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236 | }; |
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237 | |
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238 | template <typename Graph> |
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239 | struct FindEdgeTagIndicator< |
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240 | Graph, |
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241 | typename enable_if<typename Graph::FindEdgeTag, void>::type |
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242 | > { |
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243 | static const bool value = true; |
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244 | }; |
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245 | |
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246 | template <typename Graph, typename Enable = void> |
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247 | struct UndirectedTagIndicator { |
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248 | static const bool value = false; |
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249 | }; |
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250 | |
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251 | template <typename Graph> |
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252 | struct UndirectedTagIndicator< |
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253 | Graph, |
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254 | typename enable_if<typename Graph::UndirectedTag, void>::type |
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255 | > { |
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256 | static const bool value = true; |
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257 | }; |
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258 | |
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259 | template <typename Graph, typename Enable = void> |
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260 | struct BuildTagIndicator { |
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261 | static const bool value = false; |
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262 | }; |
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263 | |
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264 | template <typename Graph> |
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265 | struct BuildTagIndicator< |
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266 | Graph, |
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267 | typename enable_if<typename Graph::BuildTag, void>::type |
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268 | > { |
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269 | static const bool value = true; |
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270 | }; |
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271 | |
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272 | } |
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273 | |
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274 | #endif |
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