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 Undirected bipartite graphs and components of. |
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22 | |
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23 | |
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24 | #ifndef LEMON_CONCEPT_BPUGRAPH_H |
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25 | #define LEMON_CONCEPT_BPUGRAPH_H |
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26 | |
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27 | #include <lemon/concept/graph_component.h> |
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28 | |
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29 | #include <lemon/concept/graph.h> |
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30 | #include <lemon/concept/ugraph.h> |
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31 | |
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32 | #include <lemon/bits/utility.h> |
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33 | |
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34 | namespace lemon { |
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35 | namespace concept { |
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36 | |
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37 | /// \addtogroup graph_concepts |
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38 | /// @{ |
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39 | |
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40 | |
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41 | /// \brief Class describing the concept of Bipartite Undirected Graphs. |
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42 | /// |
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43 | /// This class describes the common interface of all |
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44 | /// Undirected Bipartite Graphs. |
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45 | /// |
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46 | /// As all concept describing classes it provides only interface |
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47 | /// without any sensible implementation. So any algorithm for |
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48 | /// bipartite undirected graph should compile with this class, but it |
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49 | /// will not run properly, of course. |
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50 | /// |
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51 | /// In LEMON bipartite undirected graphs also fulfill the concept of |
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52 | /// the undirected graphs (\ref lemon::concept::UGraph "UGraph Concept"). |
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53 | /// |
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54 | /// You can assume that all undirected bipartite graph can be handled |
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55 | /// as an undirected graph and consequently as a static graph. |
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56 | /// |
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57 | /// The bipartite graph stores two types of nodes which are named |
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58 | /// ANode and BNode. The graph type contains two types ANode and BNode |
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59 | /// which are inherited from Node type. Moreover they have |
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60 | /// constructor which converts Node to either ANode or BNode when it is |
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61 | /// possible. Therefor everywhere the Node type can be used instead of |
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62 | /// ANode and BNode. So the usage of the ANode and BNode is suggested. |
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63 | /// |
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64 | /// The iteration on the partition can be done with the ANodeIt and |
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65 | /// BNodeIt classes. The node map can be used to map values to the nodes |
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66 | /// and similarly we can use to map values for just the ANodes and |
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67 | /// BNodes the ANodeMap and BNodeMap template classes. |
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68 | |
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69 | class BpUGraph { |
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70 | public: |
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71 | /// \todo undocumented |
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72 | /// |
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73 | typedef True UndirectedTag; |
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74 | |
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75 | /// \brief The base type of node iterators, |
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76 | /// or in other words, the trivial node iterator. |
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77 | /// |
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78 | /// This is the base type of each node iterator, |
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79 | /// thus each kind of node iterator converts to this. |
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80 | /// More precisely each kind of node iterator should be inherited |
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81 | /// from the trivial node iterator. The Node class represents |
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82 | /// both of two types of nodes. |
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83 | class Node { |
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84 | public: |
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85 | /// Default constructor |
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86 | |
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87 | /// @warning The default constructor sets the iterator |
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88 | /// to an undefined value. |
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89 | Node() { } |
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90 | /// Copy constructor. |
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91 | |
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92 | /// Copy constructor. |
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93 | /// |
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94 | Node(const Node&) { } |
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95 | |
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96 | /// Invalid constructor \& conversion. |
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97 | |
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98 | /// This constructor initializes the iterator to be invalid. |
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99 | /// \sa Invalid for more details. |
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100 | Node(Invalid) { } |
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101 | /// Equality operator |
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102 | |
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103 | /// Two iterators are equal if and only if they point to the |
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104 | /// same object or both are invalid. |
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105 | bool operator==(Node) const { return true; } |
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106 | |
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107 | /// Inequality operator |
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108 | |
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109 | /// \sa operator==(Node n) |
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110 | /// |
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111 | bool operator!=(Node) const { return true; } |
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112 | |
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113 | /// Artificial ordering operator. |
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114 | |
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115 | /// To allow the use of graph descriptors as key type in std::map or |
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116 | /// similar associative container we require this. |
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117 | /// |
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118 | /// \note This operator only have to define some strict ordering of |
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119 | /// the items; this order has nothing to do with the iteration |
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120 | /// ordering of the items. |
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121 | /// |
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122 | /// \bug This is a technical requirement. Do we really need this? |
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123 | bool operator<(Node) const { return false; } |
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124 | |
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125 | }; |
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126 | |
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127 | /// \brief The base type of anode iterators, |
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128 | /// or in other words, the trivial anode iterator. |
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129 | /// |
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130 | /// This is the base type of each anode iterator, |
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131 | /// thus each kind of anode iterator converts to this. |
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132 | /// More precisely each kind of node iterator should be inherited |
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133 | /// from the trivial anode iterator. The ANode class should be used |
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134 | /// only in special cases. Usually the Node type should be used insted |
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135 | /// of it. |
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136 | class ANode { |
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137 | public: |
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138 | /// Default constructor |
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139 | |
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140 | /// @warning The default constructor sets the iterator |
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141 | /// to an undefined value. |
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142 | ANode() { } |
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143 | /// Copy constructor. |
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144 | |
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145 | /// Copy constructor. |
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146 | /// |
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147 | ANode(const ANode&) { } |
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148 | |
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149 | /// Construct the same node as ANode. |
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150 | |
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151 | /// Construct the same node as ANode. It may throws assertion |
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152 | /// when the given node is from the BNode set. |
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153 | ANode(const Node&) { } |
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154 | |
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155 | /// Invalid constructor \& conversion. |
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156 | |
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157 | /// This constructor initializes the iterator to be invalid. |
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158 | /// \sa Invalid for more details. |
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159 | ANode(Invalid) { } |
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160 | /// Equality operator |
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161 | |
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162 | /// Two iterators are equal if and only if they point to the |
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163 | /// same object or both are invalid. |
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164 | bool operator==(ANode) const { return true; } |
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165 | |
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166 | /// Inequality operator |
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167 | |
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168 | /// \sa operator==(ANode n) |
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169 | /// |
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170 | bool operator!=(ANode) const { return true; } |
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171 | |
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172 | /// Artificial ordering operator. |
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173 | |
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174 | /// To allow the use of graph descriptors as key type in std::map or |
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175 | /// similar associative container we require this. |
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176 | /// |
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177 | /// \note This operator only have to define some strict ordering of |
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178 | /// the items; this order has nothing to do with the iteration |
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179 | /// ordering of the items. |
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180 | bool operator<(ANode) const { return false; } |
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181 | |
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182 | }; |
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183 | |
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184 | /// \brief The base type of bnode iterators, |
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185 | /// or in other words, the trivial bnode iterator. |
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186 | /// |
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187 | /// This is the base type of each anode iterator, |
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188 | /// thus each kind of anode iterator converts to this. |
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189 | /// More precisely each kind of node iterator should be inherited |
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190 | /// from the trivial anode iterator. The BNode class should be used |
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191 | /// only in special cases. Usually the Node type should be used insted |
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192 | /// of it. |
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193 | class BNode { |
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194 | public: |
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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 | BNode() { } |
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200 | /// Copy constructor. |
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201 | |
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202 | /// Copy constructor. |
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203 | /// |
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204 | BNode(const BNode&) { } |
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205 | |
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206 | /// Construct the same node as BNode. |
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207 | |
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208 | /// Construct the same node as BNode. It may throws assertion |
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209 | /// when the given node is from the ANode set. |
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210 | BNode(const Node&) { } |
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211 | |
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212 | /// Invalid constructor \& conversion. |
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213 | |
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214 | /// This constructor initializes the iterator to be invalid. |
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215 | /// \sa Invalid for more details. |
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216 | BNode(Invalid) { } |
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217 | /// Equality operator |
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218 | |
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219 | /// Two iterators are equal if and only if they point to the |
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220 | /// same object or both are invalid. |
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221 | bool operator==(BNode) const { return true; } |
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222 | |
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223 | /// Inequality operator |
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224 | |
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225 | /// \sa operator==(BNode n) |
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226 | /// |
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227 | bool operator!=(BNode) const { return true; } |
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228 | |
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229 | /// Artificial ordering operator. |
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230 | |
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231 | /// To allow the use of graph descriptors as key type in std::map or |
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232 | /// similar associative container we require this. |
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233 | /// |
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234 | /// \note This operator only have to define some strict ordering of |
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235 | /// the items; this order has nothing to do with the iteration |
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236 | /// ordering of the items. |
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237 | bool operator<(BNode) const { return false; } |
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238 | |
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239 | }; |
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240 | |
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241 | /// This iterator goes through each node. |
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242 | |
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243 | /// This iterator goes through each node. |
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244 | /// Its usage is quite simple, for example you can count the number |
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245 | /// of nodes in graph \c g of type \c Graph like this: |
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246 | ///\code |
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247 | /// int count=0; |
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248 | /// for (Graph::NodeIt n(g); n!=INVALID; ++n) ++count; |
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249 | ///\endcode |
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250 | class NodeIt : public Node { |
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251 | public: |
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252 | /// Default constructor |
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253 | |
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254 | /// @warning The default constructor sets the iterator |
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255 | /// to an undefined value. |
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256 | NodeIt() { } |
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257 | /// Copy constructor. |
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258 | |
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259 | /// Copy constructor. |
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260 | /// |
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261 | NodeIt(const NodeIt& n) : Node(n) { } |
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262 | /// Invalid constructor \& conversion. |
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263 | |
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264 | /// Initialize the iterator to be invalid. |
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265 | /// \sa Invalid for more details. |
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266 | NodeIt(Invalid) { } |
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267 | /// Sets the iterator to the first node. |
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268 | |
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269 | /// Sets the iterator to the first node of \c g. |
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270 | /// |
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271 | NodeIt(const BpUGraph&) { } |
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272 | /// Node -> NodeIt conversion. |
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273 | |
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274 | /// Sets the iterator to the node of \c the graph pointed by |
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275 | /// the trivial iterator. |
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276 | /// This feature necessitates that each time we |
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277 | /// iterate the edge-set, the iteration order is the same. |
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278 | NodeIt(const BpUGraph&, const Node&) { } |
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279 | /// Next node. |
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280 | |
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281 | /// Assign the iterator to the next node. |
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282 | /// |
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283 | NodeIt& operator++() { return *this; } |
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284 | }; |
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285 | |
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286 | /// This iterator goes through each ANode. |
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287 | |
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288 | /// This iterator goes through each ANode. |
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289 | /// Its usage is quite simple, for example you can count the number |
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290 | /// of nodes in graph \c g of type \c Graph like this: |
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291 | ///\code |
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292 | /// int count=0; |
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293 | /// for (Graph::ANodeIt n(g); n!=INVALID; ++n) ++count; |
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294 | ///\endcode |
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295 | class ANodeIt : public ANode { |
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296 | public: |
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297 | /// Default constructor |
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298 | |
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299 | /// @warning The default constructor sets the iterator |
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300 | /// to an undefined value. |
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301 | ANodeIt() { } |
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302 | /// Copy constructor. |
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303 | |
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304 | /// Copy constructor. |
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305 | /// |
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306 | ANodeIt(const ANodeIt& n) : Node(n) { } |
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307 | /// Invalid constructor \& conversion. |
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308 | |
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309 | /// Initialize the iterator to be invalid. |
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310 | /// \sa Invalid for more details. |
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311 | ANodeIt(Invalid) { } |
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312 | /// Sets the iterator to the first node. |
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313 | |
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314 | /// Sets the iterator to the first node of \c g. |
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315 | /// |
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316 | ANodeIt(const BpUGraph&) { } |
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317 | /// Node -> ANodeIt conversion. |
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318 | |
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319 | /// Sets the iterator to the node of \c the graph pointed by |
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320 | /// the trivial iterator. |
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321 | /// This feature necessitates that each time we |
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322 | /// iterate the edge-set, the iteration order is the same. |
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323 | ANodeIt(const BpUGraph&, const Node&) { } |
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324 | /// Next node. |
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325 | |
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326 | /// Assign the iterator to the next node. |
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327 | /// |
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328 | ANodeIt& operator++() { return *this; } |
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329 | }; |
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330 | |
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331 | /// This iterator goes through each BNode. |
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332 | |
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333 | /// This iterator goes through each BNode. |
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334 | /// Its usage is quite simple, for example you can count the number |
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335 | /// of nodes in graph \c g of type \c Graph like this: |
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336 | ///\code |
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337 | /// int count=0; |
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338 | /// for (Graph::BNodeIt n(g); n!=INVALID; ++n) ++count; |
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339 | ///\endcode |
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340 | class BNodeIt : public BNode { |
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341 | public: |
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342 | /// Default constructor |
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343 | |
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344 | /// @warning The default constructor sets the iterator |
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345 | /// to an undefined value. |
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346 | BNodeIt() { } |
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347 | /// Copy constructor. |
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348 | |
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349 | /// Copy constructor. |
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350 | /// |
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351 | BNodeIt(const BNodeIt& n) : Node(n) { } |
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352 | /// Invalid constructor \& conversion. |
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353 | |
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354 | /// Initialize the iterator to be invalid. |
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355 | /// \sa Invalid for more details. |
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356 | BNodeIt(Invalid) { } |
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357 | /// Sets the iterator to the first node. |
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358 | |
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359 | /// Sets the iterator to the first node of \c g. |
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360 | /// |
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361 | BNodeIt(const BpUGraph&) { } |
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362 | /// Node -> BNodeIt conversion. |
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363 | |
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364 | /// Sets the iterator to the node of \c the graph pointed by |
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365 | /// the trivial iterator. |
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366 | /// This feature necessitates that each time we |
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367 | /// iterate the edge-set, the iteration order is the same. |
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368 | BNodeIt(const BpUGraph&, const Node&) { } |
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369 | /// Next node. |
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370 | |
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371 | /// Assign the iterator to the next node. |
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372 | /// |
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373 | BNodeIt& operator++() { return *this; } |
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374 | }; |
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375 | |
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376 | |
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377 | /// The base type of the undirected edge iterators. |
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378 | |
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379 | /// The base type of the undirected edge iterators. |
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380 | /// |
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381 | class UEdge { |
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382 | public: |
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383 | /// Default constructor |
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384 | |
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385 | /// @warning The default constructor sets the iterator |
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386 | /// to an undefined value. |
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387 | UEdge() { } |
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388 | /// Copy constructor. |
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389 | |
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390 | /// Copy constructor. |
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391 | /// |
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392 | UEdge(const UEdge&) { } |
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393 | /// Initialize the iterator to be invalid. |
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394 | |
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395 | /// Initialize the iterator to be invalid. |
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396 | /// |
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397 | UEdge(Invalid) { } |
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398 | /// Equality operator |
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399 | |
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400 | /// Two iterators are equal if and only if they point to the |
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401 | /// same object or both are invalid. |
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402 | bool operator==(UEdge) const { return true; } |
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403 | /// Inequality operator |
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404 | |
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405 | /// \sa operator==(UEdge n) |
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406 | /// |
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407 | bool operator!=(UEdge) const { return true; } |
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408 | |
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409 | /// Artificial ordering operator. |
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410 | |
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411 | /// To allow the use of graph descriptors as key type in std::map or |
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412 | /// similar associative container we require this. |
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413 | /// |
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414 | /// \note This operator only have to define some strict ordering of |
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415 | /// the items; this order has nothing to do with the iteration |
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416 | /// ordering of the items. |
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417 | /// |
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418 | /// \bug This is a technical requirement. Do we really need this? |
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419 | bool operator<(UEdge) const { return false; } |
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420 | }; |
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421 | |
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422 | /// This iterator goes through each undirected edge. |
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423 | |
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424 | /// This iterator goes through each undirected edge of a graph. |
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425 | /// Its usage is quite simple, for example you can count the number |
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426 | /// of undirected edges in a graph \c g of type \c Graph as follows: |
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427 | ///\code |
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428 | /// int count=0; |
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429 | /// for(Graph::UEdgeIt e(g); e!=INVALID; ++e) ++count; |
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430 | ///\endcode |
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431 | class UEdgeIt : public UEdge { |
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432 | public: |
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433 | /// Default constructor |
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434 | |
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435 | /// @warning The default constructor sets the iterator |
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436 | /// to an undefined value. |
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437 | UEdgeIt() { } |
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438 | /// Copy constructor. |
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439 | |
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440 | /// Copy constructor. |
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441 | /// |
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442 | UEdgeIt(const UEdgeIt& e) : UEdge(e) { } |
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443 | /// Initialize the iterator to be invalid. |
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444 | |
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445 | /// Initialize the iterator to be invalid. |
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446 | /// |
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447 | UEdgeIt(Invalid) { } |
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448 | /// This constructor sets the iterator to the first undirected edge. |
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449 | |
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450 | /// This constructor sets the iterator to the first undirected edge. |
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451 | UEdgeIt(const BpUGraph&) { } |
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452 | /// UEdge -> UEdgeIt conversion |
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453 | |
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454 | /// Sets the iterator to the value of the trivial iterator. |
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455 | /// This feature necessitates that each time we |
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456 | /// iterate the undirected edge-set, the iteration order is the |
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457 | /// same. |
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458 | UEdgeIt(const BpUGraph&, const UEdge&) { } |
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459 | /// Next undirected edge |
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460 | |
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461 | /// Assign the iterator to the next undirected edge. |
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462 | UEdgeIt& operator++() { return *this; } |
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463 | }; |
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464 | |
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465 | /// \brief This iterator goes trough the incident undirected |
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466 | /// edges of a node. |
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467 | /// |
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468 | /// This iterator goes trough the incident undirected edges |
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469 | /// of a certain node |
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470 | /// of a graph. |
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471 | /// Its usage is quite simple, for example you can compute the |
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472 | /// degree (i.e. count the number |
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473 | /// of incident edges of a node \c n |
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474 | /// in graph \c g of type \c Graph as follows. |
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475 | ///\code |
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476 | /// int count=0; |
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477 | /// for(Graph::IncEdgeIt e(g, n); e!=INVALID; ++e) ++count; |
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478 | ///\endcode |
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479 | class IncEdgeIt : public UEdge { |
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480 | public: |
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481 | /// Default constructor |
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482 | |
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483 | /// @warning The default constructor sets the iterator |
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484 | /// to an undefined value. |
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485 | IncEdgeIt() { } |
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486 | /// Copy constructor. |
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487 | |
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488 | /// Copy constructor. |
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489 | /// |
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490 | IncEdgeIt(const IncEdgeIt& e) : UEdge(e) { } |
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491 | /// Initialize the iterator to be invalid. |
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492 | |
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493 | /// Initialize the iterator to be invalid. |
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494 | /// |
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495 | IncEdgeIt(Invalid) { } |
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496 | /// This constructor sets the iterator to first incident edge. |
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497 | |
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498 | /// This constructor set the iterator to the first incident edge of |
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499 | /// the node. |
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500 | IncEdgeIt(const BpUGraph&, const Node&) { } |
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501 | /// UEdge -> IncEdgeIt conversion |
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502 | |
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503 | /// Sets the iterator to the value of the trivial iterator \c e. |
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504 | /// This feature necessitates that each time we |
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505 | /// iterate the edge-set, the iteration order is the same. |
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506 | IncEdgeIt(const BpUGraph&, const UEdge&) { } |
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507 | /// Next incident edge |
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508 | |
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509 | /// Assign the iterator to the next incident edge |
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510 | /// of the corresponding node. |
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511 | IncEdgeIt& operator++() { return *this; } |
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512 | }; |
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513 | |
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514 | /// The directed edge type. |
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515 | |
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516 | /// The directed edge type. It can be converted to the |
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517 | /// undirected edge. |
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518 | class Edge : public UEdge { |
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519 | public: |
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520 | /// Default constructor |
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521 | |
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522 | /// @warning The default constructor sets the iterator |
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523 | /// to an undefined value. |
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524 | Edge() { } |
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525 | /// Copy constructor. |
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526 | |
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527 | /// Copy constructor. |
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528 | /// |
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529 | Edge(const Edge& e) : UEdge(e) { } |
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530 | /// Initialize the iterator to be invalid. |
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531 | |
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532 | /// Initialize the iterator to be invalid. |
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533 | /// |
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534 | Edge(Invalid) { } |
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535 | /// Equality operator |
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536 | |
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537 | /// Two iterators are equal if and only if they point to the |
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538 | /// same object or both are invalid. |
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539 | bool operator==(Edge) const { return true; } |
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540 | /// Inequality operator |
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541 | |
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542 | /// \sa operator==(Edge n) |
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543 | /// |
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544 | bool operator!=(Edge) const { return true; } |
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545 | |
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546 | /// Artificial ordering operator. |
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547 | |
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548 | /// To allow the use of graph descriptors as key type in std::map or |
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549 | /// similar associative container we require this. |
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550 | /// |
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551 | /// \note This operator only have to define some strict ordering of |
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552 | /// the items; this order has nothing to do with the iteration |
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553 | /// ordering of the items. |
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554 | /// |
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555 | /// \bug This is a technical requirement. Do we really need this? |
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556 | bool operator<(Edge) const { return false; } |
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557 | |
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558 | }; |
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559 | /// This iterator goes through each directed edge. |
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560 | |
---|
561 | /// This iterator goes through each edge of a graph. |
---|
562 | /// Its usage is quite simple, for example you can count the number |
---|
563 | /// of edges in a graph \c g of type \c Graph as follows: |
---|
564 | ///\code |
---|
565 | /// int count=0; |
---|
566 | /// for(Graph::EdgeIt e(g); e!=INVALID; ++e) ++count; |
---|
567 | ///\endcode |
---|
568 | class EdgeIt : public Edge { |
---|
569 | public: |
---|
570 | /// Default constructor |
---|
571 | |
---|
572 | /// @warning The default constructor sets the iterator |
---|
573 | /// to an undefined value. |
---|
574 | EdgeIt() { } |
---|
575 | /// Copy constructor. |
---|
576 | |
---|
577 | /// Copy constructor. |
---|
578 | /// |
---|
579 | EdgeIt(const EdgeIt& e) : Edge(e) { } |
---|
580 | /// Initialize the iterator to be invalid. |
---|
581 | |
---|
582 | /// Initialize the iterator to be invalid. |
---|
583 | /// |
---|
584 | EdgeIt(Invalid) { } |
---|
585 | /// This constructor sets the iterator to the first edge. |
---|
586 | |
---|
587 | /// This constructor sets the iterator to the first edge of \c g. |
---|
588 | ///@param g the graph |
---|
589 | EdgeIt(const BpUGraph &g) { ignore_unused_variable_warning(g); } |
---|
590 | /// Edge -> EdgeIt conversion |
---|
591 | |
---|
592 | /// Sets the iterator to the value of the trivial iterator \c e. |
---|
593 | /// This feature necessitates that each time we |
---|
594 | /// iterate the edge-set, the iteration order is the same. |
---|
595 | EdgeIt(const BpUGraph&, const Edge&) { } |
---|
596 | ///Next edge |
---|
597 | |
---|
598 | /// Assign the iterator to the next edge. |
---|
599 | EdgeIt& operator++() { return *this; } |
---|
600 | }; |
---|
601 | |
---|
602 | /// This iterator goes trough the outgoing directed edges of a node. |
---|
603 | |
---|
604 | /// This iterator goes trough the \e outgoing edges of a certain node |
---|
605 | /// of a graph. |
---|
606 | /// Its usage is quite simple, for example you can count the number |
---|
607 | /// of outgoing edges of a node \c n |
---|
608 | /// in graph \c g of type \c Graph as follows. |
---|
609 | ///\code |
---|
610 | /// int count=0; |
---|
611 | /// for (Graph::OutEdgeIt e(g, n); e!=INVALID; ++e) ++count; |
---|
612 | ///\endcode |
---|
613 | |
---|
614 | class OutEdgeIt : public Edge { |
---|
615 | public: |
---|
616 | /// Default constructor |
---|
617 | |
---|
618 | /// @warning The default constructor sets the iterator |
---|
619 | /// to an undefined value. |
---|
620 | OutEdgeIt() { } |
---|
621 | /// Copy constructor. |
---|
622 | |
---|
623 | /// Copy constructor. |
---|
624 | /// |
---|
625 | OutEdgeIt(const OutEdgeIt& e) : Edge(e) { } |
---|
626 | /// Initialize the iterator to be invalid. |
---|
627 | |
---|
628 | /// Initialize the iterator to be invalid. |
---|
629 | /// |
---|
630 | OutEdgeIt(Invalid) { } |
---|
631 | /// This constructor sets the iterator to the first outgoing edge. |
---|
632 | |
---|
633 | /// This constructor sets the iterator to the first outgoing edge of |
---|
634 | /// the node. |
---|
635 | ///@param n the node |
---|
636 | ///@param g the graph |
---|
637 | OutEdgeIt(const BpUGraph& n, const Node& g) { |
---|
638 | ignore_unused_variable_warning(n); |
---|
639 | ignore_unused_variable_warning(g); |
---|
640 | } |
---|
641 | /// Edge -> OutEdgeIt conversion |
---|
642 | |
---|
643 | /// Sets the iterator to the value of the trivial iterator. |
---|
644 | /// This feature necessitates that each time we |
---|
645 | /// iterate the edge-set, the iteration order is the same. |
---|
646 | OutEdgeIt(const BpUGraph&, const Edge&) { } |
---|
647 | ///Next outgoing edge |
---|
648 | |
---|
649 | /// Assign the iterator to the next |
---|
650 | /// outgoing edge of the corresponding node. |
---|
651 | OutEdgeIt& operator++() { return *this; } |
---|
652 | }; |
---|
653 | |
---|
654 | /// This iterator goes trough the incoming directed edges of a node. |
---|
655 | |
---|
656 | /// This iterator goes trough the \e incoming edges of a certain node |
---|
657 | /// of a graph. |
---|
658 | /// Its usage is quite simple, for example you can count the number |
---|
659 | /// of outgoing edges of a node \c n |
---|
660 | /// in graph \c g of type \c Graph as follows. |
---|
661 | ///\code |
---|
662 | /// int count=0; |
---|
663 | /// for(Graph::InEdgeIt e(g, n); e!=INVALID; ++e) ++count; |
---|
664 | ///\endcode |
---|
665 | |
---|
666 | class InEdgeIt : public Edge { |
---|
667 | public: |
---|
668 | /// Default constructor |
---|
669 | |
---|
670 | /// @warning The default constructor sets the iterator |
---|
671 | /// to an undefined value. |
---|
672 | InEdgeIt() { } |
---|
673 | /// Copy constructor. |
---|
674 | |
---|
675 | /// Copy constructor. |
---|
676 | /// |
---|
677 | InEdgeIt(const InEdgeIt& e) : Edge(e) { } |
---|
678 | /// Initialize the iterator to be invalid. |
---|
679 | |
---|
680 | /// Initialize the iterator to be invalid. |
---|
681 | /// |
---|
682 | InEdgeIt(Invalid) { } |
---|
683 | /// This constructor sets the iterator to first incoming edge. |
---|
684 | |
---|
685 | /// This constructor set the iterator to the first incoming edge of |
---|
686 | /// the node. |
---|
687 | ///@param n the node |
---|
688 | ///@param g the graph |
---|
689 | InEdgeIt(const BpUGraph& g, const Node& n) { |
---|
690 | ignore_unused_variable_warning(n); |
---|
691 | ignore_unused_variable_warning(g); |
---|
692 | } |
---|
693 | /// Edge -> InEdgeIt conversion |
---|
694 | |
---|
695 | /// Sets the iterator to the value of the trivial iterator \c e. |
---|
696 | /// This feature necessitates that each time we |
---|
697 | /// iterate the edge-set, the iteration order is the same. |
---|
698 | InEdgeIt(const BpUGraph&, const Edge&) { } |
---|
699 | /// Next incoming edge |
---|
700 | |
---|
701 | /// Assign the iterator to the next inedge of the corresponding node. |
---|
702 | /// |
---|
703 | InEdgeIt& operator++() { return *this; } |
---|
704 | }; |
---|
705 | |
---|
706 | /// \brief Read write map of the nodes to type \c T. |
---|
707 | /// |
---|
708 | /// ReadWrite map of the nodes to type \c T. |
---|
709 | /// \sa Reference |
---|
710 | /// \warning Making maps that can handle bool type (NodeMap<bool>) |
---|
711 | /// needs some extra attention! |
---|
712 | /// \todo Wrong documentation |
---|
713 | template<class T> |
---|
714 | class NodeMap : public ReadWriteMap< Node, T > |
---|
715 | { |
---|
716 | public: |
---|
717 | |
---|
718 | ///\e |
---|
719 | NodeMap(const BpUGraph&) { } |
---|
720 | ///\e |
---|
721 | NodeMap(const BpUGraph&, T) { } |
---|
722 | |
---|
723 | ///Copy constructor |
---|
724 | NodeMap(const NodeMap& nm) : ReadWriteMap< Node, T >(nm) { } |
---|
725 | ///Assignment operator |
---|
726 | NodeMap& operator=(const NodeMap&) { return *this; } |
---|
727 | // \todo fix this concept |
---|
728 | }; |
---|
729 | |
---|
730 | /// \brief Read write map of the ANodes to type \c T. |
---|
731 | /// |
---|
732 | /// ReadWrite map of the ANodes to type \c T. |
---|
733 | /// \sa Reference |
---|
734 | /// \warning Making maps that can handle bool type (NodeMap<bool>) |
---|
735 | /// needs some extra attention! |
---|
736 | /// \todo Wrong documentation |
---|
737 | template<class T> |
---|
738 | class ANodeMap : public ReadWriteMap< Node, T > |
---|
739 | { |
---|
740 | public: |
---|
741 | |
---|
742 | ///\e |
---|
743 | ANodeMap(const BpUGraph&) { } |
---|
744 | ///\e |
---|
745 | ANodeMap(const BpUGraph&, T) { } |
---|
746 | |
---|
747 | ///Copy constructor |
---|
748 | ANodeMap(const NodeMap& nm) : ReadWriteMap< Node, T >(nm) { } |
---|
749 | ///Assignment operator |
---|
750 | ANodeMap& operator=(const NodeMap&) { return *this; } |
---|
751 | // \todo fix this concept |
---|
752 | }; |
---|
753 | |
---|
754 | /// \brief Read write map of the BNodes to type \c T. |
---|
755 | /// |
---|
756 | /// ReadWrite map of the BNodes to type \c T. |
---|
757 | /// \sa Reference |
---|
758 | /// \warning Making maps that can handle bool type (NodeMap<bool>) |
---|
759 | /// needs some extra attention! |
---|
760 | /// \todo Wrong documentation |
---|
761 | template<class T> |
---|
762 | class BNodeMap : public ReadWriteMap< Node, T > |
---|
763 | { |
---|
764 | public: |
---|
765 | |
---|
766 | ///\e |
---|
767 | BNodeMap(const BpUGraph&) { } |
---|
768 | ///\e |
---|
769 | BNodeMap(const BpUGraph&, T) { } |
---|
770 | |
---|
771 | ///Copy constructor |
---|
772 | BNodeMap(const NodeMap& nm) : ReadWriteMap< Node, T >(nm) { } |
---|
773 | ///Assignment operator |
---|
774 | BNodeMap& operator=(const NodeMap&) { return *this; } |
---|
775 | // \todo fix this concept |
---|
776 | }; |
---|
777 | |
---|
778 | /// \brief Read write map of the directed edges to type \c T. |
---|
779 | /// |
---|
780 | /// Reference map of the directed edges to type \c T. |
---|
781 | /// \sa Reference |
---|
782 | /// \warning Making maps that can handle bool type (EdgeMap<bool>) |
---|
783 | /// needs some extra attention! |
---|
784 | /// \todo Wrong documentation |
---|
785 | template<class T> |
---|
786 | class EdgeMap : public ReadWriteMap<Edge,T> |
---|
787 | { |
---|
788 | public: |
---|
789 | |
---|
790 | ///\e |
---|
791 | EdgeMap(const BpUGraph&) { } |
---|
792 | ///\e |
---|
793 | EdgeMap(const BpUGraph&, T) { } |
---|
794 | ///Copy constructor |
---|
795 | EdgeMap(const EdgeMap& em) : ReadWriteMap<Edge,T>(em) { } |
---|
796 | ///Assignment operator |
---|
797 | EdgeMap& operator=(const EdgeMap&) { return *this; } |
---|
798 | // \todo fix this concept |
---|
799 | }; |
---|
800 | |
---|
801 | /// Read write map of the undirected edges to type \c T. |
---|
802 | |
---|
803 | /// Reference map of the edges to type \c T. |
---|
804 | /// \sa Reference |
---|
805 | /// \warning Making maps that can handle bool type (UEdgeMap<bool>) |
---|
806 | /// needs some extra attention! |
---|
807 | /// \todo Wrong documentation |
---|
808 | template<class T> |
---|
809 | class UEdgeMap : public ReadWriteMap<UEdge,T> |
---|
810 | { |
---|
811 | public: |
---|
812 | |
---|
813 | ///\e |
---|
814 | UEdgeMap(const BpUGraph&) { } |
---|
815 | ///\e |
---|
816 | UEdgeMap(const BpUGraph&, T) { } |
---|
817 | ///Copy constructor |
---|
818 | UEdgeMap(const UEdgeMap& em) : ReadWriteMap<UEdge,T>(em) {} |
---|
819 | ///Assignment operator |
---|
820 | UEdgeMap &operator=(const UEdgeMap&) { return *this; } |
---|
821 | // \todo fix this concept |
---|
822 | }; |
---|
823 | |
---|
824 | /// \brief Direct the given undirected edge. |
---|
825 | /// |
---|
826 | /// Direct the given undirected edge. The returned edge source |
---|
827 | /// will be the given edge. |
---|
828 | Edge direct(const UEdge&, const Node&) const { |
---|
829 | return INVALID; |
---|
830 | } |
---|
831 | |
---|
832 | /// \brief Direct the given undirected edge. |
---|
833 | /// |
---|
834 | /// Direct the given undirected edge. The returned edge source |
---|
835 | /// will be the source of the undirected edge if the given bool |
---|
836 | /// is true. |
---|
837 | Edge direct(const UEdge&, bool) const { |
---|
838 | return INVALID; |
---|
839 | } |
---|
840 | |
---|
841 | /// \brief Returns true when the given node is an ANode. |
---|
842 | /// |
---|
843 | /// Returns true when the given node is an ANode. |
---|
844 | bool aNode(Node) const { return true;} |
---|
845 | |
---|
846 | /// \brief Returns true when the given node is an BNode. |
---|
847 | /// |
---|
848 | /// Returns true when the given node is an BNode. |
---|
849 | bool bNode(Node) const { return true;} |
---|
850 | |
---|
851 | /// \brief Returns the edge's end node which is in the ANode set. |
---|
852 | /// |
---|
853 | /// Returns the edge's end node which is in the ANode set. |
---|
854 | Node aNode(UEdge) const { return INVALID;} |
---|
855 | |
---|
856 | /// \brief Returns the edge's end node which is in the BNode set. |
---|
857 | /// |
---|
858 | /// Returns the edge's end node which is in the BNode set. |
---|
859 | Node bNode(UEdge) const { return INVALID;} |
---|
860 | |
---|
861 | /// \brief Returns true if the edge has default orientation. |
---|
862 | /// |
---|
863 | /// Returns whether the given directed edge is same orientation as |
---|
864 | /// the corresponding undirected edge. |
---|
865 | bool direction(Edge) const { return true; } |
---|
866 | |
---|
867 | /// \brief Returns the opposite directed edge. |
---|
868 | /// |
---|
869 | /// Returns the opposite directed edge. |
---|
870 | Edge oppositeEdge(Edge) const { return INVALID; } |
---|
871 | |
---|
872 | /// \brief Opposite node on an edge |
---|
873 | /// |
---|
874 | /// \return the opposite of the given Node on the given Edge |
---|
875 | Node oppositeNode(Node, UEdge) const { return INVALID; } |
---|
876 | |
---|
877 | /// \brief First node of the undirected edge. |
---|
878 | /// |
---|
879 | /// \return the first node of the given UEdge. |
---|
880 | /// |
---|
881 | /// Naturally uectected edges don't have direction and thus |
---|
882 | /// don't have source and target node. But we use these two methods |
---|
883 | /// to query the two endnodes of the edge. The direction of the edge |
---|
884 | /// which arises this way is called the inherent direction of the |
---|
885 | /// undirected edge, and is used to define the "default" direction |
---|
886 | /// of the directed versions of the edges. |
---|
887 | /// \sa direction |
---|
888 | Node source(UEdge) const { return INVALID; } |
---|
889 | |
---|
890 | /// \brief Second node of the undirected edge. |
---|
891 | Node target(UEdge) const { return INVALID; } |
---|
892 | |
---|
893 | /// \brief Source node of the directed edge. |
---|
894 | Node source(Edge) const { return INVALID; } |
---|
895 | |
---|
896 | /// \brief Target node of the directed edge. |
---|
897 | Node target(Edge) const { return INVALID; } |
---|
898 | |
---|
899 | /// \brief Base node of the iterator |
---|
900 | /// |
---|
901 | /// Returns the base node (the source in this case) of the iterator |
---|
902 | Node baseNode(OutEdgeIt e) const { |
---|
903 | return source(e); |
---|
904 | } |
---|
905 | |
---|
906 | /// \brief Running node of the iterator |
---|
907 | /// |
---|
908 | /// Returns the running node (the target in this case) of the |
---|
909 | /// iterator |
---|
910 | Node runningNode(OutEdgeIt e) const { |
---|
911 | return target(e); |
---|
912 | } |
---|
913 | |
---|
914 | /// \brief Base node of the iterator |
---|
915 | /// |
---|
916 | /// Returns the base node (the target in this case) of the iterator |
---|
917 | Node baseNode(InEdgeIt e) const { |
---|
918 | return target(e); |
---|
919 | } |
---|
920 | /// \brief Running node of the iterator |
---|
921 | /// |
---|
922 | /// Returns the running node (the source in this case) of the |
---|
923 | /// iterator |
---|
924 | Node runningNode(InEdgeIt e) const { |
---|
925 | return source(e); |
---|
926 | } |
---|
927 | |
---|
928 | /// \brief Base node of the iterator |
---|
929 | /// |
---|
930 | /// Returns the base node of the iterator |
---|
931 | Node baseNode(IncEdgeIt) const { |
---|
932 | return INVALID; |
---|
933 | } |
---|
934 | |
---|
935 | /// \brief Running node of the iterator |
---|
936 | /// |
---|
937 | /// Returns the running node of the iterator |
---|
938 | Node runningNode(IncEdgeIt) const { |
---|
939 | return INVALID; |
---|
940 | } |
---|
941 | |
---|
942 | template <typename Graph> |
---|
943 | struct Constraints { |
---|
944 | void constraints() { |
---|
945 | } |
---|
946 | }; |
---|
947 | |
---|
948 | }; |
---|
949 | |
---|
950 | /// \brief An empty non-static undirected graph class. |
---|
951 | /// |
---|
952 | /// This class provides everything that \ref BpUGraph does. |
---|
953 | /// Additionally it enables building graphs from scratch. |
---|
954 | class ExtendableBpUGraph : public BpUGraph { |
---|
955 | public: |
---|
956 | |
---|
957 | /// \brief Add a new ANode to the graph. |
---|
958 | /// |
---|
959 | /// Add a new ANode to the graph. |
---|
960 | /// \return the new node. |
---|
961 | Node addANode(); |
---|
962 | |
---|
963 | /// \brief Add a new ANode to the graph. |
---|
964 | /// |
---|
965 | /// Add a new ANode to the graph. |
---|
966 | /// \return the new node. |
---|
967 | Node addBNode(); |
---|
968 | |
---|
969 | /// \brief Add a new undirected edge to the graph. |
---|
970 | /// |
---|
971 | /// Add a new undirected edge to the graph. One of the nodes |
---|
972 | /// should be ANode and the other should be BNode. |
---|
973 | /// \pre The nodes are not in the same nodeset. |
---|
974 | /// \return the new edge. |
---|
975 | UEdge addEdge(const Node& from, const Node& to); |
---|
976 | |
---|
977 | /// \brief Resets the graph. |
---|
978 | /// |
---|
979 | /// This function deletes all undirected edges and nodes of the graph. |
---|
980 | /// It also frees the memory allocated to store them. |
---|
981 | void clear() { } |
---|
982 | |
---|
983 | template <typename Graph> |
---|
984 | struct Constraints { |
---|
985 | void constraints() {} |
---|
986 | }; |
---|
987 | |
---|
988 | }; |
---|
989 | |
---|
990 | /// \brief An empty erasable undirected graph class. |
---|
991 | /// |
---|
992 | /// This class is an extension of \ref ExtendableBpUGraph. It makes it |
---|
993 | /// possible to erase undirected edges or nodes. |
---|
994 | class ErasableBpUGraph : public ExtendableBpUGraph { |
---|
995 | public: |
---|
996 | |
---|
997 | /// \brief Deletes a node. |
---|
998 | /// |
---|
999 | /// Deletes a node. |
---|
1000 | /// |
---|
1001 | void erase(Node) { } |
---|
1002 | /// \brief Deletes an undirected edge. |
---|
1003 | /// |
---|
1004 | /// Deletes an undirected edge. |
---|
1005 | /// |
---|
1006 | void erase(UEdge) { } |
---|
1007 | |
---|
1008 | template <typename Graph> |
---|
1009 | struct Constraints { |
---|
1010 | void constraints() {} |
---|
1011 | }; |
---|
1012 | |
---|
1013 | }; |
---|
1014 | |
---|
1015 | /// @} |
---|
1016 | |
---|
1017 | } |
---|
1018 | |
---|
1019 | } |
---|
1020 | |
---|
1021 | #endif |
---|