1 | /* -*- C++ -*- |
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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) 2003-2006 |
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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 | ///\ingroup graph_concepts |
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20 | ///\file |
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21 | ///\brief The concept of the undirected graphs. |
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22 | |
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23 | |
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24 | #ifndef LEMON_CONCEPT_UGRAPH_H |
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25 | #define LEMON_CONCEPT_UGRAPH_H |
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26 | |
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27 | #include <lemon/concepts/graph_components.h> |
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28 | #include <lemon/concepts/graph.h> |
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29 | #include <lemon/bits/utility.h> |
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30 | |
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31 | namespace lemon { |
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32 | namespace concepts { |
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33 | |
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34 | /// \addtogroup graph_concepts |
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35 | /// @{ |
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36 | |
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37 | |
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38 | /// \brief Class describing the concept of Undirected Graphs. |
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39 | /// |
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40 | /// This class describes the common interface of all Undirected |
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41 | /// Graphs. |
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42 | /// |
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43 | /// As all concept describing classes it provides only interface |
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44 | /// without any sensible implementation. So any algorithm for |
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45 | /// undirected graph should compile with this class, but it will not |
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46 | /// run properly, of course. |
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47 | /// |
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48 | /// The LEMON undirected graphs also fulfill the concept of |
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49 | /// directed graphs (\ref lemon::concepts::Graph "Graph |
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50 | /// Concept"). Each undirected edges can be seen as two opposite |
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51 | /// directed edge and consequently the undirected graph can be |
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52 | /// seen as the direceted graph of these directed edges. The |
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53 | /// UGraph has the UEdge inner class for the undirected edges and |
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54 | /// the Edge type for the directed edges. The Edge type is |
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55 | /// convertible to UEdge or inherited from it so from a directed |
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56 | /// edge we can get the represented undirected edge. |
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57 | /// |
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58 | /// In the sense of the LEMON each undirected edge has a default |
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59 | /// direction (it should be in every computer implementation, |
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60 | /// because the order of undirected edge's nodes defines an |
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61 | /// orientation). With the default orientation we can define that |
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62 | /// the directed edge is forward or backward directed. With the \c |
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63 | /// direction() and \c direct() function we can get the direction |
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64 | /// of the directed edge and we can direct an undirected edge. |
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65 | /// |
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66 | /// The UEdgeIt is an iterator for the undirected edges. We can use |
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67 | /// the UEdgeMap to map values for the undirected edges. The InEdgeIt and |
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68 | /// OutEdgeIt iterates on the same undirected edges but with opposite |
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69 | /// direction. The IncEdgeIt iterates also on the same undirected edges |
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70 | /// as the OutEdgeIt and InEdgeIt but it is not convertible to Edge just |
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71 | /// to UEdge. |
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72 | class UGraph { |
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73 | public: |
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74 | /// \brief The undirected graph should be tagged by the |
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75 | /// UndirectedTag. |
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76 | /// |
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77 | /// The undirected graph should be tagged by the UndirectedTag. This |
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78 | /// tag helps the enable_if technics to make compile time |
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79 | /// specializations for undirected graphs. |
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80 | typedef True UndirectedTag; |
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81 | |
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82 | /// \brief The base type of node iterators, |
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83 | /// or in other words, the trivial node iterator. |
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84 | /// |
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85 | /// This is the base type of each node iterator, |
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86 | /// thus each kind of node iterator converts to this. |
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87 | /// More precisely each kind of node iterator should be inherited |
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88 | /// from the trivial node iterator. |
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89 | class Node { |
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90 | public: |
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91 | /// Default constructor |
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92 | |
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93 | /// @warning The default constructor sets the iterator |
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94 | /// to an undefined value. |
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95 | Node() { } |
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96 | /// Copy constructor. |
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97 | |
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98 | /// Copy constructor. |
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99 | /// |
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100 | Node(const Node&) { } |
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101 | |
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102 | /// Invalid constructor \& conversion. |
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103 | |
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104 | /// This constructor initializes the iterator to be invalid. |
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105 | /// \sa Invalid for more details. |
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106 | Node(Invalid) { } |
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107 | /// Equality operator |
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108 | |
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109 | /// Two iterators are equal if and only if they point to the |
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110 | /// same object or both are invalid. |
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111 | bool operator==(Node) const { return true; } |
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112 | |
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113 | /// Inequality operator |
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114 | |
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115 | /// \sa operator==(Node n) |
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116 | /// |
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117 | bool operator!=(Node) const { return true; } |
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118 | |
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119 | /// Artificial ordering operator. |
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120 | |
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121 | /// To allow the use of graph descriptors as key type in std::map or |
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122 | /// similar associative container we require this. |
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123 | /// |
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124 | /// \note This operator only have to define some strict ordering of |
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125 | /// the items; this order has nothing to do with the iteration |
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126 | /// ordering of the items. |
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127 | bool operator<(Node) const { return false; } |
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128 | |
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129 | }; |
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130 | |
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131 | /// This iterator goes through each node. |
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132 | |
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133 | /// This iterator goes through each node. |
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134 | /// Its usage is quite simple, for example you can count the number |
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135 | /// of nodes in graph \c g of type \c Graph like this: |
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136 | ///\code |
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137 | /// int count=0; |
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138 | /// for (Graph::NodeIt n(g); n!=INVALID; ++n) ++count; |
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139 | ///\endcode |
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140 | class NodeIt : public Node { |
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141 | public: |
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142 | /// Default constructor |
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143 | |
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144 | /// @warning The default constructor sets the iterator |
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145 | /// to an undefined value. |
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146 | NodeIt() { } |
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147 | /// Copy constructor. |
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148 | |
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149 | /// Copy constructor. |
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150 | /// |
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151 | NodeIt(const NodeIt& n) : Node(n) { } |
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152 | /// Invalid constructor \& conversion. |
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153 | |
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154 | /// Initialize the iterator to be invalid. |
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155 | /// \sa Invalid for more details. |
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156 | NodeIt(Invalid) { } |
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157 | /// Sets the iterator to the first node. |
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158 | |
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159 | /// Sets the iterator to the first node of \c g. |
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160 | /// |
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161 | NodeIt(const UGraph&) { } |
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162 | /// Node -> NodeIt conversion. |
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163 | |
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164 | /// Sets the iterator to the node of \c the graph pointed by |
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165 | /// the trivial iterator. |
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166 | /// This feature necessitates that each time we |
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167 | /// iterate the edge-set, the iteration order is the same. |
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168 | NodeIt(const UGraph&, const Node&) { } |
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169 | /// Next node. |
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170 | |
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171 | /// Assign the iterator to the next node. |
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172 | /// |
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173 | NodeIt& operator++() { return *this; } |
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174 | }; |
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175 | |
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176 | |
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177 | /// The base type of the undirected edge iterators. |
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178 | |
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179 | /// The base type of the undirected edge iterators. |
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180 | /// |
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181 | class UEdge { |
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182 | public: |
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183 | /// Default constructor |
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184 | |
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185 | /// @warning The default constructor sets the iterator |
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186 | /// to an undefined value. |
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187 | UEdge() { } |
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188 | /// Copy constructor. |
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189 | |
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190 | /// Copy constructor. |
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191 | /// |
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192 | UEdge(const UEdge&) { } |
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193 | /// Initialize the iterator to be invalid. |
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194 | |
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195 | /// Initialize the iterator to be invalid. |
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196 | /// |
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197 | UEdge(Invalid) { } |
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198 | /// Equality operator |
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199 | |
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200 | /// Two iterators are equal if and only if they point to the |
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201 | /// same object or both are invalid. |
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202 | bool operator==(UEdge) const { return true; } |
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203 | /// Inequality operator |
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204 | |
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205 | /// \sa operator==(UEdge n) |
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206 | /// |
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207 | bool operator!=(UEdge) const { return true; } |
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208 | |
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209 | /// Artificial ordering operator. |
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210 | |
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211 | /// To allow the use of graph descriptors as key type in std::map or |
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212 | /// similar associative container we require this. |
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213 | /// |
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214 | /// \note This operator only have to define some strict ordering of |
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215 | /// the items; this order has nothing to do with the iteration |
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216 | /// ordering of the items. |
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217 | bool operator<(UEdge) const { return false; } |
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218 | }; |
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219 | |
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220 | /// This iterator goes through each undirected edge. |
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221 | |
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222 | /// This iterator goes through each undirected edge of a graph. |
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223 | /// Its usage is quite simple, for example you can count the number |
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224 | /// of undirected edges in a graph \c g of type \c Graph as follows: |
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225 | ///\code |
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226 | /// int count=0; |
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227 | /// for(Graph::UEdgeIt e(g); e!=INVALID; ++e) ++count; |
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228 | ///\endcode |
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229 | class UEdgeIt : public UEdge { |
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230 | public: |
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231 | /// Default constructor |
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232 | |
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233 | /// @warning The default constructor sets the iterator |
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234 | /// to an undefined value. |
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235 | UEdgeIt() { } |
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236 | /// Copy constructor. |
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237 | |
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238 | /// Copy constructor. |
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239 | /// |
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240 | UEdgeIt(const UEdgeIt& e) : UEdge(e) { } |
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241 | /// Initialize the iterator to be invalid. |
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242 | |
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243 | /// Initialize the iterator to be invalid. |
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244 | /// |
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245 | UEdgeIt(Invalid) { } |
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246 | /// This constructor sets the iterator to the first undirected edge. |
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247 | |
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248 | /// This constructor sets the iterator to the first undirected edge. |
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249 | UEdgeIt(const UGraph&) { } |
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250 | /// UEdge -> UEdgeIt conversion |
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251 | |
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252 | /// Sets the iterator to the value of the trivial iterator. |
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253 | /// This feature necessitates that each time we |
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254 | /// iterate the undirected edge-set, the iteration order is the |
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255 | /// same. |
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256 | UEdgeIt(const UGraph&, const UEdge&) { } |
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257 | /// Next undirected edge |
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258 | |
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259 | /// Assign the iterator to the next undirected edge. |
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260 | UEdgeIt& operator++() { return *this; } |
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261 | }; |
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262 | |
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263 | /// \brief This iterator goes trough the incident undirected |
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264 | /// edges of a node. |
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265 | /// |
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266 | /// This iterator goes trough the incident undirected edges |
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267 | /// of a certain node of a graph. You should assume that the |
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268 | /// loop edges will be iterated twice. |
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269 | /// |
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270 | /// Its usage is quite simple, for example you can compute the |
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271 | /// degree (i.e. count the number of incident edges of a node \c n |
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272 | /// in graph \c g of type \c Graph as follows. |
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273 | /// |
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274 | ///\code |
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275 | /// int count=0; |
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276 | /// for(Graph::IncEdgeIt e(g, n); e!=INVALID; ++e) ++count; |
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277 | ///\endcode |
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278 | class IncEdgeIt : public UEdge { |
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279 | public: |
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280 | /// Default constructor |
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281 | |
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282 | /// @warning The default constructor sets the iterator |
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283 | /// to an undefined value. |
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284 | IncEdgeIt() { } |
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285 | /// Copy constructor. |
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286 | |
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287 | /// Copy constructor. |
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288 | /// |
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289 | IncEdgeIt(const IncEdgeIt& e) : UEdge(e) { } |
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290 | /// Initialize the iterator to be invalid. |
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291 | |
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292 | /// Initialize the iterator to be invalid. |
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293 | /// |
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294 | IncEdgeIt(Invalid) { } |
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295 | /// This constructor sets the iterator to first incident edge. |
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296 | |
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297 | /// This constructor set the iterator to the first incident edge of |
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298 | /// the node. |
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299 | IncEdgeIt(const UGraph&, const Node&) { } |
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300 | /// UEdge -> IncEdgeIt conversion |
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301 | |
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302 | /// Sets the iterator to the value of the trivial iterator \c e. |
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303 | /// This feature necessitates that each time we |
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304 | /// iterate the edge-set, the iteration order is the same. |
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305 | IncEdgeIt(const UGraph&, const UEdge&) { } |
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306 | /// Next incident edge |
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307 | |
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308 | /// Assign the iterator to the next incident edge |
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309 | /// of the corresponding node. |
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310 | IncEdgeIt& operator++() { return *this; } |
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311 | }; |
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312 | |
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313 | /// The directed edge type. |
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314 | |
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315 | /// The directed edge type. It can be converted to the |
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316 | /// undirected edge or it should be inherited from the undirected |
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317 | /// edge. |
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318 | class Edge : public UEdge { |
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319 | public: |
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320 | /// Default constructor |
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321 | |
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322 | /// @warning The default constructor sets the iterator |
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323 | /// to an undefined value. |
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324 | Edge() { } |
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325 | /// Copy constructor. |
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326 | |
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327 | /// Copy constructor. |
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328 | /// |
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329 | Edge(const Edge& e) : UEdge(e) { } |
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330 | /// Initialize the iterator to be invalid. |
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331 | |
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332 | /// Initialize the iterator to be invalid. |
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333 | /// |
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334 | Edge(Invalid) { } |
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335 | /// Equality operator |
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336 | |
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337 | /// Two iterators are equal if and only if they point to the |
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338 | /// same object or both are invalid. |
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339 | bool operator==(Edge) const { return true; } |
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340 | /// Inequality operator |
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341 | |
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342 | /// \sa operator==(Edge n) |
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343 | /// |
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344 | bool operator!=(Edge) const { return true; } |
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345 | |
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346 | /// Artificial ordering operator. |
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347 | |
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348 | /// To allow the use of graph descriptors as key type in std::map or |
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349 | /// similar associative container we require this. |
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350 | /// |
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351 | /// \note This operator only have to define some strict ordering of |
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352 | /// the items; this order has nothing to do with the iteration |
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353 | /// ordering of the items. |
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354 | bool operator<(Edge) const { return false; } |
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355 | |
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356 | }; |
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357 | /// This iterator goes through each directed edge. |
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358 | |
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359 | /// This iterator goes through each edge of a graph. |
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360 | /// Its usage is quite simple, for example you can count the number |
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361 | /// of edges in a graph \c g of type \c Graph as follows: |
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362 | ///\code |
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363 | /// int count=0; |
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364 | /// for(Graph::EdgeIt e(g); e!=INVALID; ++e) ++count; |
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365 | ///\endcode |
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366 | class EdgeIt : public Edge { |
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367 | public: |
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368 | /// Default constructor |
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369 | |
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370 | /// @warning The default constructor sets the iterator |
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371 | /// to an undefined value. |
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372 | EdgeIt() { } |
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373 | /// Copy constructor. |
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374 | |
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375 | /// Copy constructor. |
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376 | /// |
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377 | EdgeIt(const EdgeIt& e) : Edge(e) { } |
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378 | /// Initialize the iterator to be invalid. |
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379 | |
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380 | /// Initialize the iterator to be invalid. |
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381 | /// |
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382 | EdgeIt(Invalid) { } |
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383 | /// This constructor sets the iterator to the first edge. |
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384 | |
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385 | /// This constructor sets the iterator to the first edge of \c g. |
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386 | ///@param g the graph |
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387 | EdgeIt(const UGraph &g) { ignore_unused_variable_warning(g); } |
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388 | /// Edge -> EdgeIt conversion |
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389 | |
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390 | /// Sets the iterator to the value of the trivial iterator \c e. |
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391 | /// This feature necessitates that each time we |
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392 | /// iterate the edge-set, the iteration order is the same. |
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393 | EdgeIt(const UGraph&, const Edge&) { } |
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394 | ///Next edge |
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395 | |
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396 | /// Assign the iterator to the next edge. |
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397 | EdgeIt& operator++() { return *this; } |
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398 | }; |
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399 | |
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400 | /// This iterator goes trough the outgoing directed edges of a node. |
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401 | |
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402 | /// This iterator goes trough the \e outgoing edges of a certain node |
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403 | /// of a graph. |
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404 | /// Its usage is quite simple, for example you can count the number |
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405 | /// of outgoing edges of a node \c n |
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406 | /// in graph \c g of type \c Graph as follows. |
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407 | ///\code |
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408 | /// int count=0; |
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409 | /// for (Graph::OutEdgeIt e(g, n); e!=INVALID; ++e) ++count; |
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410 | ///\endcode |
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411 | |
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412 | class OutEdgeIt : public Edge { |
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413 | public: |
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414 | /// Default constructor |
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415 | |
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416 | /// @warning The default constructor sets the iterator |
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417 | /// to an undefined value. |
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418 | OutEdgeIt() { } |
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419 | /// Copy constructor. |
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420 | |
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421 | /// Copy constructor. |
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422 | /// |
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423 | OutEdgeIt(const OutEdgeIt& e) : Edge(e) { } |
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424 | /// Initialize the iterator to be invalid. |
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425 | |
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426 | /// Initialize the iterator to be invalid. |
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427 | /// |
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428 | OutEdgeIt(Invalid) { } |
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429 | /// This constructor sets the iterator to the first outgoing edge. |
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430 | |
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431 | /// This constructor sets the iterator to the first outgoing edge of |
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432 | /// the node. |
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433 | ///@param n the node |
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434 | ///@param g the graph |
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435 | OutEdgeIt(const UGraph& n, const Node& g) { |
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436 | ignore_unused_variable_warning(n); |
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437 | ignore_unused_variable_warning(g); |
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438 | } |
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439 | /// Edge -> OutEdgeIt conversion |
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440 | |
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441 | /// Sets the iterator to the value of the trivial iterator. |
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442 | /// This feature necessitates that each time we |
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443 | /// iterate the edge-set, the iteration order is the same. |
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444 | OutEdgeIt(const UGraph&, const Edge&) { } |
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445 | ///Next outgoing edge |
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446 | |
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447 | /// Assign the iterator to the next |
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448 | /// outgoing edge of the corresponding node. |
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449 | OutEdgeIt& operator++() { return *this; } |
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450 | }; |
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451 | |
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452 | /// This iterator goes trough the incoming directed edges of a node. |
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453 | |
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454 | /// This iterator goes trough the \e incoming edges of a certain node |
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455 | /// of a graph. |
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456 | /// Its usage is quite simple, for example you can count the number |
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457 | /// of outgoing edges of a node \c n |
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458 | /// in graph \c g of type \c Graph as follows. |
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459 | ///\code |
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460 | /// int count=0; |
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461 | /// for(Graph::InEdgeIt e(g, n); e!=INVALID; ++e) ++count; |
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462 | ///\endcode |
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463 | |
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464 | class InEdgeIt : public Edge { |
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465 | public: |
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466 | /// Default constructor |
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467 | |
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468 | /// @warning The default constructor sets the iterator |
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469 | /// to an undefined value. |
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470 | InEdgeIt() { } |
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471 | /// Copy constructor. |
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472 | |
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473 | /// Copy constructor. |
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474 | /// |
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475 | InEdgeIt(const InEdgeIt& e) : Edge(e) { } |
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476 | /// Initialize the iterator to be invalid. |
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477 | |
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478 | /// Initialize the iterator to be invalid. |
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479 | /// |
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480 | InEdgeIt(Invalid) { } |
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481 | /// This constructor sets the iterator to first incoming edge. |
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482 | |
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483 | /// This constructor set the iterator to the first incoming edge of |
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484 | /// the node. |
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485 | ///@param n the node |
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486 | ///@param g the graph |
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487 | InEdgeIt(const UGraph& g, const Node& n) { |
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488 | ignore_unused_variable_warning(n); |
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489 | ignore_unused_variable_warning(g); |
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490 | } |
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491 | /// Edge -> InEdgeIt conversion |
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492 | |
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493 | /// Sets the iterator to the value of the trivial iterator \c e. |
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494 | /// This feature necessitates that each time we |
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495 | /// iterate the edge-set, the iteration order is the same. |
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496 | InEdgeIt(const UGraph&, const Edge&) { } |
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497 | /// Next incoming edge |
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498 | |
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499 | /// Assign the iterator to the next inedge of the corresponding node. |
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500 | /// |
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501 | InEdgeIt& operator++() { return *this; } |
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502 | }; |
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503 | |
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504 | /// \brief Read write map of the nodes to type \c T. |
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505 | /// |
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506 | /// ReadWrite map of the nodes to type \c T. |
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507 | /// \sa Reference |
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508 | /// \warning Making maps that can handle bool type (NodeMap<bool>) |
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509 | /// needs some extra attention! |
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510 | template<class T> |
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511 | class NodeMap : public ReadWriteMap< Node, T > |
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512 | { |
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513 | public: |
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514 | |
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515 | ///\e |
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516 | NodeMap(const UGraph&) { } |
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517 | ///\e |
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518 | NodeMap(const UGraph&, T) { } |
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519 | |
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520 | ///Copy constructor |
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521 | NodeMap(const NodeMap& nm) : ReadWriteMap< Node, T >(nm) { } |
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522 | ///Assignment operator |
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523 | template <typename CMap> |
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524 | NodeMap& operator=(const CMap&) { |
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525 | checkConcept<ReadMap<Node, T>, CMap>(); |
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526 | return *this; |
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527 | } |
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528 | }; |
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529 | |
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530 | /// \brief Read write map of the directed edges to type \c T. |
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531 | /// |
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532 | /// Reference map of the directed edges to type \c T. |
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533 | /// \sa Reference |
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534 | /// \warning Making maps that can handle bool type (EdgeMap<bool>) |
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535 | /// needs some extra attention! |
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536 | template<class T> |
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537 | class EdgeMap : public ReadWriteMap<Edge,T> |
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538 | { |
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539 | public: |
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540 | |
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541 | ///\e |
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542 | EdgeMap(const UGraph&) { } |
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543 | ///\e |
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544 | EdgeMap(const UGraph&, T) { } |
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545 | ///Copy constructor |
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546 | EdgeMap(const EdgeMap& em) : ReadWriteMap<Edge,T>(em) { } |
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547 | ///Assignment operator |
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548 | template <typename CMap> |
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549 | EdgeMap& operator=(const CMap&) { |
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550 | checkConcept<ReadMap<Edge, T>, CMap>(); |
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551 | return *this; |
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552 | } |
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553 | }; |
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554 | |
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555 | /// Read write map of the undirected edges to type \c T. |
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556 | |
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557 | /// Reference map of the edges to type \c T. |
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558 | /// \sa Reference |
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559 | /// \warning Making maps that can handle bool type (UEdgeMap<bool>) |
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560 | /// needs some extra attention! |
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561 | template<class T> |
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562 | class UEdgeMap : public ReadWriteMap<UEdge,T> |
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563 | { |
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564 | public: |
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565 | |
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566 | ///\e |
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567 | UEdgeMap(const UGraph&) { } |
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568 | ///\e |
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569 | UEdgeMap(const UGraph&, T) { } |
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570 | ///Copy constructor |
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571 | UEdgeMap(const UEdgeMap& em) : ReadWriteMap<UEdge,T>(em) {} |
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572 | ///Assignment operator |
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573 | template <typename CMap> |
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574 | UEdgeMap& operator=(const CMap&) { |
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575 | checkConcept<ReadMap<UEdge, T>, CMap>(); |
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576 | return *this; |
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577 | } |
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578 | }; |
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579 | |
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580 | /// \brief Direct the given undirected edge. |
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581 | /// |
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582 | /// Direct the given undirected edge. The returned edge source |
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583 | /// will be the given node. |
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584 | Edge direct(const UEdge&, const Node&) const { |
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585 | return INVALID; |
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586 | } |
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587 | |
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588 | /// \brief Direct the given undirected edge. |
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589 | /// |
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590 | /// Direct the given undirected edge. The returned edge |
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591 | /// represents the given undireted edge and the direction comes |
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592 | /// from the given bool. The source of the undirected edge and |
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593 | /// the directed edge is the same when the given bool is true. |
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594 | Edge direct(const UEdge&, bool) const { |
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595 | return INVALID; |
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596 | } |
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597 | |
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598 | /// \brief Returns true if the edge has default orientation. |
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599 | /// |
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600 | /// Returns whether the given directed edge is same orientation as |
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601 | /// the corresponding undirected edge's default orientation. |
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602 | bool direction(Edge) const { return true; } |
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603 | |
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604 | /// \brief Returns the opposite directed edge. |
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605 | /// |
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606 | /// Returns the opposite directed edge. |
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607 | Edge oppositeEdge(Edge) const { return INVALID; } |
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608 | |
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609 | /// \brief Opposite node on an edge |
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610 | /// |
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611 | /// \return the opposite of the given Node on the given UEdge |
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612 | Node oppositeNode(Node, UEdge) const { return INVALID; } |
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613 | |
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614 | /// \brief First node of the undirected edge. |
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615 | /// |
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616 | /// \return the first node of the given UEdge. |
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617 | /// |
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618 | /// Naturally undirected edges don't have direction and thus |
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619 | /// don't have source and target node. But we use these two methods |
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620 | /// to query the two nodes of the edge. The direction of the edge |
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621 | /// which arises this way is called the inherent direction of the |
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622 | /// undirected edge, and is used to define the "default" direction |
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623 | /// of the directed versions of the edges. |
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624 | /// \sa direction |
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625 | Node source(UEdge) const { return INVALID; } |
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626 | |
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627 | /// \brief Second node of the undirected edge. |
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628 | Node target(UEdge) const { return INVALID; } |
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629 | |
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630 | /// \brief Source node of the directed edge. |
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631 | Node source(Edge) const { return INVALID; } |
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632 | |
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633 | /// \brief Target node of the directed edge. |
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634 | Node target(Edge) const { return INVALID; } |
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635 | |
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636 | void first(Node&) const {} |
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637 | void next(Node&) const {} |
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638 | |
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639 | void first(UEdge&) const {} |
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640 | void next(UEdge&) const {} |
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641 | |
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642 | void first(Edge&) const {} |
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643 | void next(Edge&) const {} |
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644 | |
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645 | void firstOut(Edge&, Node) const {} |
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646 | void nextOut(Edge&) const {} |
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647 | |
---|
648 | void firstIn(Edge&, Node) const {} |
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649 | void nextIn(Edge&) const {} |
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650 | |
---|
651 | |
---|
652 | void firstInc(UEdge &, bool &, const Node &) const {} |
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653 | void nextInc(UEdge &, bool &) const {} |
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654 | |
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655 | /// \brief Base node of the iterator |
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656 | /// |
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657 | /// Returns the base node (the source in this case) of the iterator |
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658 | Node baseNode(OutEdgeIt e) const { |
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659 | return source(e); |
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660 | } |
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661 | /// \brief Running node of the iterator |
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662 | /// |
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663 | /// Returns the running node (the target in this case) of the |
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664 | /// iterator |
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665 | Node runningNode(OutEdgeIt e) const { |
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666 | return target(e); |
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667 | } |
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668 | |
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669 | /// \brief Base node of the iterator |
---|
670 | /// |
---|
671 | /// Returns the base node (the target in this case) of the iterator |
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672 | Node baseNode(InEdgeIt e) const { |
---|
673 | return target(e); |
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674 | } |
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675 | /// \brief Running node of the iterator |
---|
676 | /// |
---|
677 | /// Returns the running node (the source in this case) of the |
---|
678 | /// iterator |
---|
679 | Node runningNode(InEdgeIt e) const { |
---|
680 | return source(e); |
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681 | } |
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682 | |
---|
683 | /// \brief Base node of the iterator |
---|
684 | /// |
---|
685 | /// Returns the base node of the iterator |
---|
686 | Node baseNode(IncEdgeIt) const { |
---|
687 | return INVALID; |
---|
688 | } |
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689 | |
---|
690 | /// \brief Running node of the iterator |
---|
691 | /// |
---|
692 | /// Returns the running node of the iterator |
---|
693 | Node runningNode(IncEdgeIt) const { |
---|
694 | return INVALID; |
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695 | } |
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696 | |
---|
697 | template <typename Graph> |
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698 | struct Constraints { |
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699 | void constraints() { |
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700 | checkConcept<IterableUGraphComponent<>, Graph>(); |
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701 | checkConcept<MappableUGraphComponent<>, Graph>(); |
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702 | } |
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703 | }; |
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704 | |
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705 | }; |
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706 | |
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707 | /// @} |
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708 | |
---|
709 | } |
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710 | |
---|
711 | } |
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712 | |
---|
713 | #endif |
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