1 | /* -*- C++ -*- |
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2 | * lemon/traits.h - Part of LEMON, a generic C++ optimization library |
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3 | * |
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4 | * Copyright (C) 2005 Egervary Jeno Kombinatorikus Optimalizalasi Kutatocsoport |
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5 | * (Egervary Research Group on Combinatorial Optimization, EGRES). |
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6 | * |
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7 | * Permission to use, modify and distribute this software is granted |
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8 | * provided that this copyright notice appears in all copies. For |
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9 | * precise terms see the accompanying LICENSE file. |
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10 | * |
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11 | * This software is provided "AS IS" with no warranty of any kind, |
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12 | * express or implied, and with no claim as to its suitability for any |
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13 | * purpose. |
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14 | * |
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15 | */ |
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16 | |
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17 | #ifndef LEMON_TRAITS_H |
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18 | #define LEMON_TRAITS_H |
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19 | |
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20 | #include <lemon/utility.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 | namespace lemon { |
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27 | template <typename _Graph, typename _Item> |
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28 | class ItemSetTraits {}; |
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29 | |
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30 | template <typename _Graph> |
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31 | class ItemSetTraits<_Graph, typename _Graph::Node> { |
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32 | public: |
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33 | |
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34 | typedef _Graph Graph; |
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35 | |
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36 | typedef typename Graph::Node Item; |
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37 | typedef typename Graph::NodeIt ItemIt; |
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38 | |
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39 | template <typename _Value> |
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40 | class Map : public Graph::template NodeMap<_Value> { |
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41 | public: |
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42 | typedef typename Graph::template NodeMap<_Value> Parent; |
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43 | typedef typename Parent::Value Value; |
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44 | |
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45 | Map(const Graph& _graph) : Parent(_graph) {} |
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46 | Map(const Graph& _graph, const Value& _value) |
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47 | : Parent(_graph, _value) {} |
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48 | }; |
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49 | |
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50 | }; |
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51 | |
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52 | template <typename _Graph> |
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53 | class ItemSetTraits<_Graph, typename _Graph::Edge> { |
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54 | public: |
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55 | |
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56 | typedef _Graph Graph; |
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57 | |
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58 | typedef typename Graph::Edge Item; |
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59 | typedef typename Graph::EdgeIt ItemIt; |
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60 | |
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61 | template <typename _Value> |
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62 | class Map : public Graph::template EdgeMap<_Value> { |
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63 | public: |
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64 | typedef typename Graph::template EdgeMap<_Value> Parent; |
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65 | typedef typename Parent::Value Value; |
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66 | |
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67 | Map(const Graph& _graph) : Parent(_graph) {} |
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68 | Map(const Graph& _graph, const Value& _value) |
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69 | : Parent(_graph, _value) {} |
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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> |
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75 | class ItemSetTraits<_Graph, typename _Graph::UndirEdge> { |
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76 | public: |
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77 | |
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78 | typedef _Graph Graph; |
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79 | |
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80 | typedef typename Graph::UndirEdge Item; |
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81 | typedef typename Graph::UndirEdgeIt ItemIt; |
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82 | |
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83 | template <typename _Value> |
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84 | class Map : public Graph::template UndirEdgeMap<_Value> { |
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85 | public: |
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86 | typedef typename Graph::template UndirEdgeMap<_Value> Parent; |
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87 | typedef typename Parent::Value Value; |
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88 | |
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89 | Map(const Graph& _graph) : Parent(_graph) {} |
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90 | Map(const Graph& _graph, const Value& _value) |
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91 | : Parent(_graph, _value) {} |
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92 | }; |
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93 | |
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94 | }; |
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95 | |
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96 | template <typename Map, typename Enable = void> |
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97 | struct MapTraits { |
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98 | typedef False ReferenceMapTag; |
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99 | |
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100 | typedef typename Map::Key Key; |
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101 | typedef typename Map::Value Value; |
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102 | |
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103 | typedef Value ConstReturnValue; |
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104 | typedef Value& ReturnValue; |
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105 | }; |
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106 | |
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107 | template <typename Map> |
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108 | struct MapTraits< |
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109 | Map, typename enable_if<typename Map::ReferenceMapTag, void>::type > |
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110 | { |
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111 | typedef True ReferenceMapTag; |
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112 | |
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113 | typedef typename Map::Key Key; |
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114 | typedef typename Map::Value Value; |
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115 | |
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116 | typedef typename Map::ConstReference ConstReturnValue; |
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117 | typedef typename Map::Reference ReturnValue; |
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118 | |
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119 | typedef typename Map::ConstReference ConstReference; |
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120 | typedef typename Map::Reference Reference; |
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121 | }; |
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122 | |
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123 | // Indicators for the tags |
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124 | |
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125 | template <typename Graph, typename Enable = void> |
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126 | struct NodeNumTagIndicator { |
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127 | static const bool value = false; |
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128 | }; |
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129 | |
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130 | template <typename Graph> |
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131 | struct NodeNumTagIndicator< |
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132 | Graph, |
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133 | typename enable_if<typename Graph::NodeNumTag, void>::type |
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134 | > { |
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135 | static const bool value = true; |
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136 | }; |
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137 | |
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138 | template <typename Graph, typename Enable = void> |
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139 | struct EdgeNumTagIndicator { |
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140 | static const bool value = false; |
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141 | }; |
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142 | |
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143 | template <typename Graph> |
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144 | struct EdgeNumTagIndicator< |
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145 | Graph, |
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146 | typename enable_if<typename Graph::EdgeNumTag, void>::type |
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147 | > { |
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148 | static const bool value = true; |
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149 | }; |
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150 | |
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151 | template <typename Graph, typename Enable = void> |
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152 | struct FindEdgeTagIndicator { |
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153 | static const bool value = false; |
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154 | }; |
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155 | |
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156 | template <typename Graph> |
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157 | struct FindEdgeTagIndicator< |
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158 | Graph, |
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159 | typename enable_if<typename Graph::FindEdgeTag, void>::type |
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160 | > { |
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161 | static const bool value = true; |
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162 | }; |
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163 | |
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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 | #endif // LEMON_MAPS_H |
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