1 | /* -*- C++ -*- |
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2 | * src/lemon/concept/graph_component.h - Part of LEMON, a generic C++ optimization library |
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3 | * |
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4 | * Copyright (C) 2004 Egervary Jeno Kombinatorikus Optimalizalasi Kutatocsoport |
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5 | * (Egervary Combinatorial Optimization Research Group, 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 | ///\ingroup concept |
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18 | ///\file |
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19 | ///\brief The graph components. |
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20 | |
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21 | |
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22 | #ifndef LEMON_CONCEPT_GRAPH_COMPONENT_H |
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23 | #define LEMON_CONCEPT_GRAPH_COMPONENT_H |
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24 | |
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25 | #include <lemon/invalid.h> |
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26 | #include <lemon/concept/maps.h> |
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27 | |
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28 | namespace lemon { |
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29 | namespace concept { |
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30 | |
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31 | |
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32 | /**************** Graph iterator concepts ****************/ |
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33 | |
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34 | /// Skeleton class for graph Node and Edge |
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35 | |
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36 | /// \note Because Node and Edge are forbidden to inherit from the same |
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37 | /// base class, this is a template. For Node you shoul instantiate it |
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38 | /// with character 'n' and for Edge with 'e'. |
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39 | |
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40 | template<char Ch> |
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41 | class GraphItem { |
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42 | public: |
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43 | GraphItem() {} |
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44 | GraphItem(Invalid) {} |
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45 | |
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46 | // We explicitely list these: |
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47 | GraphItem(GraphItem const&) {} |
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48 | GraphItem& operator=(GraphItem const&) { return *this; } |
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49 | |
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50 | bool operator==(GraphItem) const { return false; } |
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51 | bool operator!=(GraphItem) const { return false; } |
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52 | |
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53 | // Technical requirement. Do we really need this? |
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54 | bool operator<(GraphItem) const { return false; } |
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55 | }; |
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56 | |
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57 | |
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58 | template<typename GI> |
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59 | struct GraphItemConcept { |
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60 | void constraints() { |
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61 | GI i1; |
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62 | GI i2 = i1; |
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63 | GI i3 = INVALID; |
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64 | |
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65 | i1 = i2 = i3; |
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66 | |
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67 | bool b; |
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68 | b = (ia == ib) && (ia != ib) && (ia < ib); |
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69 | b = (ia == INVALID) && (ib != INVALID); |
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70 | } |
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71 | |
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72 | const GI &ia; |
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73 | const GI &ib; |
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74 | }; |
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75 | |
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76 | |
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77 | template<typename Iter, typename Graph, typename BaseItem> |
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78 | struct GraphIteratorConcept { |
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79 | void constraints() { |
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80 | function_requires< GraphItemConcept<Iter> >(); |
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81 | Iter it1(g); |
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82 | |
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83 | /// \todo Do we need NodeIt(Node) kind of constructor? |
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84 | // Iter it2(bj); |
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85 | Iter it2; |
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86 | |
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87 | it2 = ++it1; |
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88 | ++it2 = it1; |
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89 | ++(++it1); |
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90 | /// \bug This should be: is_base_and_derived<BaseItem, Iter> |
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91 | BaseItem bi = it1; |
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92 | bi = it2; |
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93 | } |
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94 | |
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95 | BaseItem bj; |
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96 | Graph g; |
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97 | }; |
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98 | |
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99 | template<typename Iter, typename Graph> |
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100 | struct GraphIncIteratorConcept { |
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101 | typedef typename Graph::Node Node; |
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102 | typedef typename Graph::Edge Edge; |
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103 | void constraints() { |
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104 | function_requires< GraphItemConcept<Iter> >(); |
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105 | Iter it1(graph, node); |
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106 | /// \todo Do we need OutEdgeIt(Edge) kind of constructor? |
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107 | // Iter it2(edge); |
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108 | Iter it2; |
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109 | |
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110 | it2 = ++it1; |
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111 | ++it2 = it1; |
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112 | ++(++it1); |
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113 | Edge e = it1; |
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114 | e = it2; |
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115 | } |
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116 | |
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117 | Edge edge; |
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118 | Node node; |
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119 | Graph graph; |
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120 | }; |
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121 | |
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122 | |
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123 | |
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124 | /// An empty base graph class. |
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125 | |
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126 | /// This class provides the minimal set of features needed for a graph |
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127 | /// structure. All graph concepts have to be conform to this base |
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128 | /// graph. |
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129 | /// |
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130 | /// \bug This is not true. The minimal graph concept is the |
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131 | /// BaseIterableGraphComponent. |
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132 | |
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133 | class BaseGraphComponent { |
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134 | public: |
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135 | |
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136 | typedef BaseGraphComponent Graph; |
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137 | |
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138 | /// Node class of the graph. |
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139 | |
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140 | /// This class represents the Nodes of the graph. |
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141 | /// |
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142 | class Node { |
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143 | public: |
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144 | |
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145 | /// Default constructor. |
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146 | |
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147 | /// @warning The default constructor sets the iterator |
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148 | /// to an undefined value. |
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149 | |
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150 | Node() {} |
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151 | /// Copy constructor. |
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152 | |
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153 | /// Copy constructor. |
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154 | /// |
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155 | Node(const Node&) {} |
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156 | |
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157 | /// Invalid constructor \& conversion. |
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158 | |
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159 | /// This constructor initializes the iterator to be invalid. |
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160 | /// \sa Invalid for more details. |
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161 | Node(Invalid) {} |
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162 | |
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163 | |
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164 | Node& operator=(const Node&) { return *this;} |
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165 | |
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166 | /// Equality operator. |
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167 | |
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168 | /// Two iterators are equal if and only if they represents the |
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169 | /// same node in the graph or both are invalid. |
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170 | bool operator==(const Node&) const { return true;} |
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171 | |
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172 | |
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173 | /// Inequality operator. |
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174 | |
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175 | /// \sa operator==(const Node& n) |
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176 | /// |
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177 | bool operator!=(const Node&) const { return true;} |
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178 | |
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179 | /// Comparison operator. |
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180 | |
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181 | /// This is a strict ordering between the nodes. |
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182 | /// |
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183 | /// This ordering can be different from the iterating order of nodes. |
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184 | /// \todo Possibly we don't need it. |
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185 | bool operator<(const Node&) const { return true;} |
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186 | }; |
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187 | |
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188 | /// Edge class of the graph. |
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189 | |
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190 | /// This class represents the Edges of the graph. |
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191 | /// |
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192 | class Edge { |
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193 | public: |
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194 | |
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195 | /// Default constructor. |
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196 | |
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197 | /// @warning The default constructor sets the iterator |
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198 | /// to an undefined value. |
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199 | |
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200 | Edge() {} |
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201 | /// Copy constructor. |
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202 | |
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203 | /// Copy constructor. |
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204 | /// |
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205 | Edge(const Edge&) {} |
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206 | |
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207 | /// Invalid constructor \& conversion. |
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208 | |
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209 | /// This constructor initializes the iterator to be invalid. |
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210 | /// \sa Invalid for more details. |
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211 | Edge(Invalid) {} |
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212 | |
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213 | |
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214 | Edge& operator=(const Edge&) { return *this;} |
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215 | |
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216 | /// Equality operator. |
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217 | |
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218 | /// Two iterators are equal if and only if they represents the |
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219 | /// same edge in the graph or both are invalid. |
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220 | bool operator==(const Edge&) const { return true;} |
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221 | |
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222 | |
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223 | /// Inequality operator. |
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224 | |
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225 | /// \sa operator==(const Edge& n) |
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226 | /// |
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227 | bool operator!=(const Edge&) const { return true;} |
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228 | |
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229 | /// Comparison operator. |
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230 | |
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231 | /// This is a strict ordering between the edges. |
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232 | /// |
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233 | /// This ordering can be different from the iterating order of edges. |
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234 | /// \todo Possibly we don't need it. |
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235 | bool operator<(const Edge&) const { return true;} |
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236 | }; |
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237 | |
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238 | ///Gives back the head node of an edge. |
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239 | |
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240 | ///Gives back the head node of an edge. |
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241 | /// |
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242 | Node head(const Edge&) const { return INVALID;} |
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243 | |
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244 | ///Gives back the tail node of an edge. |
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245 | |
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246 | ///Gives back the tail node of an edge. |
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247 | /// |
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248 | Node tail(const Edge&) const { return INVALID;} |
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249 | }; |
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250 | |
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251 | |
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252 | /// Concept check structure for BaseGraph. |
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253 | |
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254 | /// Concept check structure for BaseGraph. |
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255 | /// |
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256 | |
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257 | template <typename Graph> |
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258 | struct BaseGraphComponentConcept { |
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259 | typedef typename Graph::Node Node; |
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260 | typedef typename Graph::Edge Edge; |
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261 | |
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262 | void constraints() { |
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263 | function_requires< GraphItemConcept<Node> >(); |
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264 | function_requires< GraphItemConcept<Edge> >(); |
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265 | { |
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266 | const Graph& const_graph = graph; |
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267 | Node n; |
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268 | Edge e; |
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269 | n = const_graph.tail(e); |
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270 | n = const_graph.head(e); |
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271 | } |
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272 | } |
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273 | |
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274 | Graph& graph; |
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275 | }; |
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276 | |
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277 | /// An empty iterable base graph class. |
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278 | |
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279 | /// This class provides beside the core graph features |
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280 | /// core iterable interface for the graph structure. |
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281 | /// Most of the base graphs should be conform to this concept. |
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282 | |
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283 | class BaseIterableGraphComponent : virtual public BaseGraphComponent { |
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284 | public: |
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285 | |
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286 | typedef BaseGraphComponent::Node Node; |
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287 | typedef BaseGraphComponent::Edge Edge; |
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288 | |
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289 | /// Gives back the first Node in the iterating order. |
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290 | |
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291 | /// Gives back the first Node in the iterating order. |
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292 | /// |
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293 | void first(Node&) const {} |
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294 | |
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295 | /// Gives back the next Node in the iterating order. |
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296 | |
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297 | /// Gives back the next Node in the iterating order. |
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298 | /// |
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299 | void next(Node&) const {} |
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300 | |
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301 | /// Gives back the first Edge in the iterating order. |
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302 | |
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303 | /// Gives back the first Edge in the iterating order. |
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304 | /// |
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305 | void first(Edge&) const {} |
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306 | /// Gives back the next Edge in the iterating order. |
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307 | |
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308 | /// Gives back the next Edge in the iterating order. |
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309 | /// |
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310 | void next(Edge&) const {} |
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311 | |
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312 | |
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313 | /// Gives back the first of the Edges point to the given Node. |
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314 | |
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315 | /// Gives back the first of the Edges point to the given Node. |
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316 | /// |
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317 | void firstIn(Edge&, const Node&) const {} |
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318 | |
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319 | /// Gives back the next of the Edges points to the given Node. |
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320 | |
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321 | |
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322 | /// Gives back the next of the Edges points to the given Node. |
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323 | /// |
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324 | void nextIn(Edge&) const {} |
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325 | |
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326 | /// Gives back the first of the Edges start from the given Node. |
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327 | |
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328 | /// Gives back the first of the Edges start from the given Node. |
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329 | /// |
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330 | void firstOut(Edge&, const Node&) const {} |
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331 | |
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332 | /// Gives back the next of the Edges start from the given Node. |
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333 | |
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334 | /// Gives back the next of the Edges start from the given Node. |
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335 | /// |
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336 | void nextOut(Edge&) const {} |
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337 | }; |
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338 | |
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339 | |
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340 | /// Concept check structure for IterableBaseGraph. |
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341 | |
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342 | /// Concept check structure for IterableBaseGraph. |
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343 | /// |
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344 | template <typename Graph> |
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345 | struct BaseIterableGraphComponentConcept { |
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346 | |
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347 | void constraints() { |
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348 | function_requires< BaseGraphComponentConcept<Graph> >(); |
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349 | typename Graph::Node node; |
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350 | typename Graph::Edge edge; |
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351 | { |
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352 | graph.first(node); |
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353 | graph.next(node); |
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354 | } |
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355 | { |
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356 | graph.first(edge); |
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357 | graph.next(edge); |
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358 | } |
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359 | { |
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360 | graph.firstIn(edge, node); |
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361 | graph.nextIn(edge); |
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362 | } |
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363 | { |
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364 | graph.firstOut(edge, node); |
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365 | graph.nextOut(edge); |
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366 | } |
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367 | } |
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368 | |
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369 | const Graph& graph; |
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370 | }; |
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371 | |
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372 | /// An empty idable base graph class. |
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373 | |
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374 | /// This class provides beside the core graph features |
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375 | /// core id functions for the graph structure. |
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376 | /// The most of the base graphs should be conform to this concept. |
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377 | /// The id's are unique and immutable. |
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378 | |
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379 | class IDableGraphComponent : virtual public BaseGraphComponent { |
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380 | public: |
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381 | |
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382 | typedef BaseGraphComponent::Node Node; |
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383 | typedef BaseGraphComponent::Edge Edge; |
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384 | |
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385 | /// Gives back an unique integer id for the Node. |
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386 | |
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387 | /// Gives back an unique integer id for the Node. |
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388 | /// |
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389 | int id(const Node&) const { return -1;} |
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390 | |
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391 | /// Gives back an unique integer id for the Edge. |
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392 | |
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393 | /// Gives back an unique integer id for the Edge. |
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394 | /// |
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395 | int id(const Edge&) const { return -1;} |
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396 | }; |
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397 | |
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398 | |
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399 | /// Concept check structure for IdableBaseGraph. |
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400 | |
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401 | /// Concept check structure for IdableBaseGraph. |
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402 | /// |
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403 | template <typename Graph> |
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404 | struct IDableGraphComponentConcept { |
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405 | |
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406 | void constraints() { |
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407 | function_requires< BaseGraphComponentConcept<Graph> >(); |
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408 | typename Graph::Node node; |
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409 | int nid = graph.id(node); |
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410 | nid = graph.id(node); |
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411 | typename Graph::Edge edge; |
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412 | int eid = graph.id(edge); |
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413 | eid = graph.id(edge); |
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414 | } |
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415 | |
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416 | const Graph& graph; |
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417 | }; |
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418 | |
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419 | |
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420 | /// An empty max-idable base graph class. |
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421 | |
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422 | /// This class provides beside the core graph features |
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423 | /// core max id functions for the graph structure. |
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424 | /// The most of the base graphs should be conform to this concept. |
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425 | /// The id's are unique and immutable. |
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426 | class MaxIDableGraphComponent : virtual public BaseGraphComponent { |
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427 | public: |
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428 | |
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429 | /// Gives back an integer greater or equal to the maximum Node id. |
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430 | |
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431 | /// Gives back an integer greater or equal to the maximum Node id. |
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432 | /// |
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433 | int maxEdgeId() const { return -1;} |
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434 | |
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435 | /// Gives back an integer greater or equal to the maximum Edge id. |
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436 | |
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437 | /// Gives back an integer greater or equal to the maximum Edge id. |
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438 | /// |
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439 | int maxNodeId() const { return -1;} |
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440 | }; |
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441 | |
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442 | /// Concept check structure for MaxIdableBaseGraph. |
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443 | |
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444 | /// Concept check structure for MaxIdableBaseGraph. |
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445 | /// |
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446 | template <typename Graph> |
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447 | struct MaxIDableGraphComponentConcept { |
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448 | |
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449 | void constraints() { |
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450 | function_requires< BaseGraphComponentConcept<Graph> >(); |
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451 | int nid = graph.maxEdgeId(); |
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452 | ignore_unused_variable_warning(nid); |
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453 | int eid = graph.maxNodeId(); |
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454 | ignore_unused_variable_warning(eid); |
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455 | } |
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456 | |
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457 | const Graph& graph; |
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458 | }; |
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459 | |
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460 | /// An empty extendable base graph class. |
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461 | |
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462 | /// This class provides beside the core graph features |
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463 | /// core graph extend interface for the graph structure. |
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464 | /// The most of the base graphs should be conform to this concept. |
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465 | class BaseExtendableGraphComponent : virtual public BaseGraphComponent { |
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466 | public: |
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467 | |
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468 | typedef BaseGraphComponent::Node Node; |
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469 | typedef BaseGraphComponent::Edge Edge; |
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470 | |
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471 | /// Adds a new Node to the graph. |
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472 | |
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473 | /// Adds a new Node to the graph. |
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474 | /// |
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475 | Node addNode() { |
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476 | return INVALID; |
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477 | } |
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478 | |
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479 | /// Adds a new Edge connects the two Nodes to the graph. |
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480 | |
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481 | /// Adds a new Edge connects the two Nodes to the graph. |
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482 | /// |
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483 | Edge addEdge(const Node& from, const Node& to) { |
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484 | return INVALID; |
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485 | } |
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486 | |
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487 | }; |
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488 | |
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489 | /// Concept check structure for ExtendableBaseGraph. |
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490 | |
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491 | /// Concept check structure for ExtendableBaseGraph. |
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492 | /// |
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493 | template <typename Graph> |
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494 | struct BaseExtendableGraphComponentConcept { |
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495 | void constraints() { |
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496 | function_requires< BaseGraphComponentConcept<Graph> >(); |
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497 | typename Graph::Node node_a, node_b; |
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498 | node_a = graph.addNode(); |
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499 | typename Graph::Edge edge; |
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500 | edge = graph.addEdge(node_a, node_b); |
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501 | } |
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502 | |
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503 | Graph& graph; |
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504 | }; |
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505 | |
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506 | /// An empty erasable base graph class. |
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507 | |
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508 | /// This class provides beside the core graph features |
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509 | /// core erase functions for the graph structure. |
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510 | /// The most of the base graphs should be conform to this concept. |
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511 | class BaseErasableGraphComponent : virtual public BaseGraphComponent { |
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512 | public: |
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513 | |
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514 | typedef BaseGraphComponent::Node Node; |
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515 | typedef BaseGraphComponent::Edge Edge; |
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516 | |
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517 | /// Erase a Node from the graph. |
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518 | |
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519 | /// Erase a Node from the graph. This function should not |
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520 | /// erase edges connecting to the Node. |
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521 | void erase(const Node&) {} |
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522 | |
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523 | /// Erase an Edge from the graph. |
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524 | |
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525 | /// Erase an Edge from the graph. |
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526 | /// |
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527 | void erase(const Edge&) {} |
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528 | |
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529 | }; |
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530 | |
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531 | /// Concept check structure for ErasableBaseGraph. |
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532 | |
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533 | /// Concept check structure for ErasableBaseGraph. |
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534 | /// |
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535 | template <typename Graph> |
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536 | struct BaseErasableGraphComponentConcept { |
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537 | void constraints() { |
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538 | function_requires< BaseGraphComponentConcept<Graph> >(); |
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539 | typename Graph::Node node; |
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540 | graph.erase(node); |
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541 | typename Graph::Edge edge; |
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542 | graph.erase(edge); |
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543 | } |
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544 | |
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545 | Graph& graph; |
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546 | }; |
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547 | |
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548 | /// An empty clearable base graph class. |
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549 | |
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550 | /// This class provides beside the core graph features |
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551 | /// core clear functions for the graph structure. |
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552 | /// The most of the base graphs should be conform to this concept. |
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553 | class BaseClearableGraphComponent : virtual public BaseGraphComponent { |
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554 | public: |
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555 | |
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556 | /// Erase all the Nodes and Edges from the graph. |
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557 | |
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558 | /// Erase all the Nodes and Edges from the graph. |
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559 | /// |
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560 | void clear() {} |
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561 | }; |
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562 | |
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563 | /// Concept check function for ErasableBaseGraph. |
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564 | |
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565 | /// Concept check function for ErasableBaseGraph. |
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566 | /// |
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567 | template <typename Graph> |
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568 | struct BaseClearableGraphComponentConcept { |
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569 | void constraints() { |
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570 | function_requires< BaseGraphComponentConcept<Graph> >(); |
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571 | graph.clear(); |
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572 | } |
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573 | |
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574 | Graph& graph; |
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575 | }; |
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576 | |
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577 | |
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578 | class IterableGraphComponent : |
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579 | virtual public BaseIterableGraphComponent { |
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580 | |
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581 | public: |
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582 | |
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583 | typedef IterableGraphComponent Graph; |
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584 | |
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585 | typedef BaseGraphComponent::Node Node; |
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586 | typedef BaseGraphComponent::Edge Edge; |
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587 | |
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588 | class NodeIt : public Node { |
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589 | public: |
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590 | NodeIt() {} |
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591 | NodeIt(Invalid) {} |
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592 | // explicit NodeIt(Node) {} |
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593 | explicit NodeIt(const Graph&) {} |
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594 | |
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595 | NodeIt& operator++() { return *this; } |
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596 | // Node operator*() const { return INVALID; } |
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597 | |
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598 | bool operator==(const NodeIt&) const { return true;} |
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599 | bool operator!=(const NodeIt&) const { return true;} |
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600 | }; |
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601 | |
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602 | class EdgeIt : public Edge { |
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603 | public: |
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604 | EdgeIt() {} |
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605 | EdgeIt(Invalid) {} |
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606 | // explicit EdgeIt(Edge) {} |
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607 | explicit EdgeIt(const Graph&) {} |
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608 | |
---|
609 | EdgeIt& operator++() { return *this; } |
---|
610 | // Edge operator*() const { return INVALID; } |
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611 | |
---|
612 | bool operator==(const EdgeIt&) const { return true;} |
---|
613 | bool operator!=(const EdgeIt&) const { return true;} |
---|
614 | }; |
---|
615 | |
---|
616 | class InEdgeIt : public Edge { |
---|
617 | public: |
---|
618 | InEdgeIt() {} |
---|
619 | InEdgeIt(Invalid) {} |
---|
620 | // explicit InEdgeIt(Edge) {} |
---|
621 | explicit InEdgeIt(const Graph&, const Node&) {} |
---|
622 | |
---|
623 | InEdgeIt& operator++() { return *this; } |
---|
624 | // Edge operator*() const { return INVALID; } |
---|
625 | |
---|
626 | bool operator==(const InEdgeIt&) const { return true;} |
---|
627 | bool operator!=(const InEdgeIt&) const { return true;} |
---|
628 | }; |
---|
629 | |
---|
630 | class OutEdgeIt : public Edge { |
---|
631 | public: |
---|
632 | OutEdgeIt() {} |
---|
633 | OutEdgeIt(Invalid) {} |
---|
634 | // explicit OutEdgeIt(Edge) {} |
---|
635 | explicit OutEdgeIt(const Graph&, const Node&) {} |
---|
636 | |
---|
637 | OutEdgeIt& operator++() { return *this; } |
---|
638 | // Edge operator*() const { return INVALID; } |
---|
639 | |
---|
640 | bool operator==(const OutEdgeIt&) const { return true;} |
---|
641 | bool operator!=(const OutEdgeIt&) const { return true;} |
---|
642 | }; |
---|
643 | |
---|
644 | }; |
---|
645 | |
---|
646 | template <typename Graph> |
---|
647 | struct IterableGraphComponentConcept { |
---|
648 | |
---|
649 | void constraints() { |
---|
650 | function_requires< BaseIterableGraphComponentConcept<Graph> >(); |
---|
651 | |
---|
652 | typedef typename Graph::Node Node; |
---|
653 | typedef typename Graph::NodeIt NodeIt; |
---|
654 | typedef typename Graph::Edge Edge; |
---|
655 | typedef typename Graph::EdgeIt EdgeIt; |
---|
656 | typedef typename Graph::InEdgeIt InEdgeIt; |
---|
657 | typedef typename Graph::OutEdgeIt OutEdgeIt; |
---|
658 | |
---|
659 | function_requires< GraphIteratorConcept<NodeIt, Graph, Node> >(); |
---|
660 | function_requires< GraphIteratorConcept<EdgeIt, Graph, Edge> >(); |
---|
661 | function_requires< GraphIncIteratorConcept<OutEdgeIt, Graph> >(); |
---|
662 | function_requires< GraphIncIteratorConcept<InEdgeIt, Graph> >(); |
---|
663 | } |
---|
664 | Graph& graph; |
---|
665 | }; |
---|
666 | |
---|
667 | |
---|
668 | class IdMappableGraphComponent : virtual public BaseGraphComponent { |
---|
669 | |
---|
670 | typedef IdMappableGraphComponent Graph; |
---|
671 | |
---|
672 | public: |
---|
673 | |
---|
674 | typedef BaseGraphComponent::Node Node; |
---|
675 | typedef BaseGraphComponent::Edge Edge; |
---|
676 | |
---|
677 | class NodeIdMap : public ReadMap<Node, int> { |
---|
678 | public: |
---|
679 | NodeIdMap(const Graph&) {} |
---|
680 | int maxId() const { return -1;} |
---|
681 | }; |
---|
682 | |
---|
683 | class EdgeIdMap : public ReadMap<Edge, int> { |
---|
684 | public: |
---|
685 | EdgeIdMap(const Graph&) {} |
---|
686 | int maxId() const { return -1;} |
---|
687 | }; |
---|
688 | |
---|
689 | }; |
---|
690 | |
---|
691 | template <typename Graph> |
---|
692 | struct IdMappableGraphComponentConcept { |
---|
693 | void constraints() { |
---|
694 | function_requires< BaseGraphComponentConcept<Graph> >(); |
---|
695 | { |
---|
696 | typedef typename Graph::EdgeIdMap EdgeIdMap; |
---|
697 | function_requires<ReadMapConcept<EdgeIdMap> >(); |
---|
698 | EdgeIdMap edge_map(graph); |
---|
699 | int n = edge_map.maxId(); |
---|
700 | ignore_unused_variable_warning(n); |
---|
701 | } |
---|
702 | { |
---|
703 | typedef typename Graph::NodeIdMap NodeIdMap; |
---|
704 | function_requires<ReadMapConcept<NodeIdMap> >(); |
---|
705 | NodeIdMap node_map(graph); |
---|
706 | int n = node_map.maxId(); |
---|
707 | ignore_unused_variable_warning(n); |
---|
708 | } |
---|
709 | } |
---|
710 | Graph& graph; |
---|
711 | }; |
---|
712 | |
---|
713 | |
---|
714 | class MappableGraphComponent : virtual public BaseGraphComponent { |
---|
715 | public: |
---|
716 | |
---|
717 | typedef MappableGraphComponent Graph; |
---|
718 | |
---|
719 | typedef BaseGraphComponent::Node Node; |
---|
720 | typedef BaseGraphComponent::Edge Edge; |
---|
721 | |
---|
722 | template <typename Value> |
---|
723 | class NodeMap : public ReferenceMap<Node, Value> { |
---|
724 | public: |
---|
725 | NodeMap(const Graph&) {} |
---|
726 | NodeMap(const Graph&, const Value&) {} |
---|
727 | NodeMap(const NodeMap&) {} |
---|
728 | |
---|
729 | NodeMap& operator=(const NodeMap&) { return *this;} |
---|
730 | |
---|
731 | }; |
---|
732 | |
---|
733 | template <typename Value> |
---|
734 | class EdgeMap : public ReferenceMap<Edge, Value> { |
---|
735 | public: |
---|
736 | EdgeMap(const Graph&) {} |
---|
737 | EdgeMap(const Graph&, const Value&) {} |
---|
738 | EdgeMap(const EdgeMap&) {} |
---|
739 | |
---|
740 | EdgeMap& operator=(const EdgeMap&) { return *this;} |
---|
741 | |
---|
742 | }; |
---|
743 | |
---|
744 | }; |
---|
745 | |
---|
746 | template <typename Graph> |
---|
747 | struct MappableGraphComponentConcept { |
---|
748 | |
---|
749 | struct Type { |
---|
750 | int value; |
---|
751 | Type() : value(0) {} |
---|
752 | Type(int _v) : value(_v) {} |
---|
753 | }; |
---|
754 | |
---|
755 | void constraints() { |
---|
756 | function_requires< BaseGraphComponentConcept<Graph> >(); |
---|
757 | { // int map test |
---|
758 | typedef typename Graph::template NodeMap<int> IntNodeMap; |
---|
759 | function_requires<GraphMapConcept<IntNodeMap,Graph> >(); |
---|
760 | } { // bool map test |
---|
761 | typedef typename Graph::template NodeMap<bool> BoolNodeMap; |
---|
762 | function_requires<GraphMapConcept<BoolNodeMap,Graph> >(); |
---|
763 | } { // Type map test |
---|
764 | typedef typename Graph::template NodeMap<Type> TypeNodeMap; |
---|
765 | function_requires<GraphMapConcept<TypeNodeMap,Graph> >(); |
---|
766 | } |
---|
767 | |
---|
768 | { // int map test |
---|
769 | typedef typename Graph::template EdgeMap<int> IntEdgeMap; |
---|
770 | function_requires<GraphMapConcept<IntEdgeMap,Graph> >(); |
---|
771 | } { // bool map test |
---|
772 | typedef typename Graph::template EdgeMap<bool> BoolEdgeMap; |
---|
773 | function_requires<GraphMapConcept<BoolEdgeMap,Graph> >(); |
---|
774 | } { // Type map test |
---|
775 | typedef typename Graph::template EdgeMap<Type> TypeEdgeMap; |
---|
776 | function_requires<GraphMapConcept<TypeEdgeMap,Graph> >(); |
---|
777 | } |
---|
778 | } |
---|
779 | |
---|
780 | Graph& graph; |
---|
781 | }; |
---|
782 | |
---|
783 | |
---|
784 | class ExtendableGraphComponent : virtual public BaseGraphComponent { |
---|
785 | public: |
---|
786 | |
---|
787 | typedef ExtendableGraphComponent Graph; |
---|
788 | |
---|
789 | typedef BaseGraphComponent::Node Node; |
---|
790 | typedef BaseGraphComponent::Edge Edge; |
---|
791 | |
---|
792 | Node addNode() { |
---|
793 | return INVALID; |
---|
794 | } |
---|
795 | |
---|
796 | Edge addEdge(const Node& from, const Node& to) { |
---|
797 | return INVALID; |
---|
798 | } |
---|
799 | |
---|
800 | }; |
---|
801 | |
---|
802 | template <typename Graph> |
---|
803 | struct ExtendableGraphComponentConcept { |
---|
804 | void constraints() { |
---|
805 | function_requires< BaseGraphComponentConcept<Graph> >(); |
---|
806 | typename Graph::Node node_a, node_b; |
---|
807 | node_a = graph.addNode(); |
---|
808 | typename Graph::Edge edge; |
---|
809 | edge = graph.addEdge(node_a, node_b); |
---|
810 | } |
---|
811 | Graph& graph; |
---|
812 | }; |
---|
813 | |
---|
814 | class ErasableGraphComponent : virtual public BaseGraphComponent { |
---|
815 | public: |
---|
816 | |
---|
817 | typedef ErasableGraphComponent Graph; |
---|
818 | |
---|
819 | typedef BaseGraphComponent::Node Node; |
---|
820 | typedef BaseGraphComponent::Edge Edge; |
---|
821 | |
---|
822 | void erase(const Node&) {} |
---|
823 | void erase(const Edge&) {} |
---|
824 | |
---|
825 | }; |
---|
826 | |
---|
827 | template <typename Graph> |
---|
828 | struct ErasableGraphComponentConcept { |
---|
829 | void constraints() { |
---|
830 | function_requires< BaseGraphComponentConcept<Graph> >(); |
---|
831 | typename Graph::Node node; |
---|
832 | graph.erase(node); |
---|
833 | typename Graph::Edge edge; |
---|
834 | graph.erase(edge); |
---|
835 | } |
---|
836 | |
---|
837 | Graph& graph; |
---|
838 | }; |
---|
839 | |
---|
840 | class ClearableGraphComponent : virtual public BaseGraphComponent { |
---|
841 | public: |
---|
842 | |
---|
843 | typedef ClearableGraphComponent Graph; |
---|
844 | |
---|
845 | typedef BaseGraphComponent::Node Node; |
---|
846 | typedef BaseGraphComponent::Edge Edge; |
---|
847 | |
---|
848 | void clear() {} |
---|
849 | |
---|
850 | }; |
---|
851 | |
---|
852 | template <typename Graph> |
---|
853 | struct ClearableGraphComponentConcept { |
---|
854 | void constraints() { |
---|
855 | function_requires< BaseGraphComponentConcept<Graph> >(); |
---|
856 | graph.clear(); |
---|
857 | } |
---|
858 | Graph& graph; |
---|
859 | }; |
---|
860 | |
---|
861 | } |
---|
862 | |
---|
863 | } |
---|
864 | |
---|
865 | #endif |
---|