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 | #ifndef LEMON_EDGE_SET_H |
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20 | #define LEMON_EDGE_SET_H |
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21 | |
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22 | |
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23 | #include <lemon/bits/default_map.h> |
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24 | #include <lemon/bits/edge_set_extender.h> |
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25 | |
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26 | /// \ingroup semi_adaptors |
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27 | /// \file |
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28 | /// \brief EdgeSet classes. |
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29 | /// |
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30 | /// Graphs which use another graph's node-set as own. |
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31 | |
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32 | namespace lemon { |
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33 | |
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34 | template <typename _Graph> |
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35 | class ListEdgeSetBase { |
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36 | public: |
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37 | |
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38 | typedef _Graph Graph; |
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39 | typedef typename Graph::Node Node; |
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40 | typedef typename Graph::NodeIt NodeIt; |
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41 | |
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42 | protected: |
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43 | |
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44 | struct NodeT { |
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45 | int first_out, first_in; |
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46 | NodeT() : first_out(-1), first_in(-1) {} |
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47 | }; |
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48 | |
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49 | typedef DefaultMap<Graph, Node, NodeT> NodesImplBase; |
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50 | |
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51 | NodesImplBase* nodes; |
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52 | |
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53 | struct EdgeT { |
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54 | Node source, target; |
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55 | int next_out, next_in; |
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56 | int prev_out, prev_in; |
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57 | EdgeT() : prev_out(-1), prev_in(-1) {} |
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58 | }; |
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59 | |
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60 | std::vector<EdgeT> edges; |
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61 | |
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62 | int first_edge; |
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63 | int first_free_edge; |
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64 | |
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65 | const Graph* graph; |
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66 | |
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67 | void initalize(const Graph& _graph, NodesImplBase& _nodes) { |
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68 | graph = &_graph; |
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69 | nodes = &_nodes; |
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70 | } |
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71 | |
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72 | public: |
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73 | |
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74 | class Edge { |
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75 | friend class ListEdgeSetBase<Graph>; |
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76 | protected: |
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77 | Edge(int _id) : id(_id) {} |
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78 | int id; |
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79 | public: |
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80 | Edge() {} |
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81 | Edge(Invalid) : id(-1) {} |
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82 | bool operator==(const Edge& edge) const { return id == edge.id; } |
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83 | bool operator!=(const Edge& edge) const { return id != edge.id; } |
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84 | bool operator<(const Edge& edge) const { return id < edge.id; } |
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85 | }; |
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86 | |
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87 | ListEdgeSetBase() : first_edge(-1), first_free_edge(-1) {} |
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88 | |
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89 | Edge addEdge(const Node& source, const Node& target) { |
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90 | int n; |
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91 | if (first_free_edge == -1) { |
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92 | n = edges.size(); |
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93 | edges.push_back(EdgeT()); |
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94 | } else { |
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95 | n = first_free_edge; |
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96 | first_free_edge = edges[first_free_edge].next_in; |
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97 | } |
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98 | edges[n].next_in = (*nodes)[target].first_in; |
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99 | if ((*nodes)[target].first_in != -1) { |
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100 | edges[(*nodes)[target].first_in].prev_in = n; |
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101 | } |
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102 | (*nodes)[target].first_in = n; |
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103 | edges[n].next_out = (*nodes)[source].first_out; |
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104 | if ((*nodes)[source].first_out != -1) { |
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105 | edges[(*nodes)[source].first_out].prev_out = n; |
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106 | } |
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107 | (*nodes)[source].first_out = n; |
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108 | edges[n].source = source; |
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109 | edges[n].target = target; |
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110 | return Edge(n); |
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111 | } |
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112 | |
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113 | void erase(const Edge& edge) { |
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114 | int n = edge.id; |
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115 | if (edges[n].prev_in != -1) { |
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116 | edges[edges[n].prev_in].next_in = edges[n].next_in; |
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117 | } else { |
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118 | (*nodes)[edges[n].target].first_in = edges[n].next_in; |
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119 | } |
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120 | if (edges[n].next_in != -1) { |
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121 | edges[edges[n].next_in].prev_in = edges[n].prev_in; |
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122 | } |
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123 | |
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124 | if (edges[n].prev_out != -1) { |
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125 | edges[edges[n].prev_out].next_out = edges[n].next_out; |
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126 | } else { |
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127 | (*nodes)[edges[n].source].first_out = edges[n].next_out; |
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128 | } |
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129 | if (edges[n].next_out != -1) { |
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130 | edges[edges[n].next_out].prev_out = edges[n].prev_out; |
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131 | } |
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132 | |
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133 | } |
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134 | |
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135 | void clear() { |
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136 | Node node; |
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137 | for (first(node); node != INVALID; next(node)) { |
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138 | (*nodes)[node].first_in = -1; |
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139 | (*nodes)[node].first_out = -1; |
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140 | } |
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141 | edges.clear(); |
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142 | first_edge = -1; |
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143 | first_free_edge = -1; |
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144 | } |
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145 | |
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146 | void first(Node& node) const { |
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147 | graph->first(node); |
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148 | } |
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149 | |
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150 | void next(Node& node) const { |
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151 | graph->next(node); |
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152 | } |
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153 | |
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154 | void first(Edge& edge) const { |
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155 | Node node; |
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156 | for (first(node); node != INVALID && (*nodes)[node].first_in == -1; |
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157 | next(node)); |
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158 | edge.id = (node == INVALID) ? -1 : (*nodes)[node].first_in; |
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159 | } |
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160 | |
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161 | void next(Edge& edge) const { |
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162 | if (edges[edge.id].next_in != -1) { |
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163 | edge.id = edges[edge.id].next_in; |
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164 | } else { |
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165 | Node node = edges[edge.id].target; |
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166 | for (next(node); node != INVALID && (*nodes)[node].first_in == -1; |
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167 | next(node)); |
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168 | edge.id = (node == INVALID) ? -1 : (*nodes)[node].first_in; |
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169 | } |
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170 | } |
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171 | |
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172 | void firstOut(Edge& edge, const Node& node) const { |
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173 | edge.id = (*nodes)[node].first_out; |
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174 | } |
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175 | |
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176 | void nextOut(Edge& edge) const { |
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177 | edge.id = edges[edge.id].next_out; |
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178 | } |
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179 | |
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180 | void firstIn(Edge& edge, const Node& node) const { |
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181 | edge.id = (*nodes)[node].first_in; |
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182 | } |
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183 | |
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184 | void nextIn(Edge& edge) const { |
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185 | edge.id = edges[edge.id].next_in; |
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186 | } |
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187 | |
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188 | int id(const Node& node) const { return graph->id(node); } |
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189 | int id(const Edge& edge) const { return edge.id; } |
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190 | |
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191 | Node nodeFromId(int id) const { return graph->nodeFromId(id); } |
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192 | Edge edgeFromId(int id) const { return Edge(id); } |
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193 | |
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194 | int maxNodeId() const { return graph->maxNodeId(); }; |
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195 | int maxEdgeId() const { return edges.size() - 1; } |
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196 | |
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197 | Node source(const Edge& edge) const { return edges[edge.id].source;} |
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198 | Node target(const Edge& edge) const { return edges[edge.id].target;} |
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199 | |
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200 | typedef typename ItemSetTraits<Graph, Node>::ItemNotifier NodeNotifier; |
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201 | |
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202 | NodeNotifier& getNotifier(Node) const { |
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203 | return graph->getNotifier(Node()); |
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204 | } |
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205 | |
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206 | template <typename _Value> |
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207 | class NodeMap : public Graph::template NodeMap<_Value> { |
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208 | public: |
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209 | |
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210 | typedef typename _Graph::template NodeMap<_Value> Parent; |
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211 | |
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212 | explicit NodeMap(const ListEdgeSetBase<Graph>& edgeset) |
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213 | : Parent(*edgeset.graph) {} |
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214 | |
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215 | NodeMap(const ListEdgeSetBase<Graph>& edgeset, const _Value& value) |
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216 | : Parent(*edgeset.graph, value) {} |
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217 | |
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218 | NodeMap& operator=(const NodeMap& cmap) { |
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219 | return operator=<NodeMap>(cmap); |
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220 | } |
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221 | |
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222 | template <typename CMap> |
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223 | NodeMap& operator=(const CMap& cmap) { |
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224 | Parent::operator=(cmap); |
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225 | return *this; |
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226 | } |
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227 | }; |
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228 | |
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229 | }; |
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230 | |
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231 | /// \ingroup semi_adaptors |
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232 | /// |
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233 | /// \brief Graph using a node set of another graph and an |
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234 | /// own edge set. |
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235 | /// |
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236 | /// This structure can be used to establish another graph over a node set |
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237 | /// of an existing one. The node iterator will go through the nodes of the |
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238 | /// original graph. |
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239 | /// |
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240 | /// \param _Graph The type of the graph which shares its node set with |
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241 | /// this class. Its interface must conform to the \ref concept::Graph |
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242 | /// "Graph" concept. |
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243 | /// |
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244 | /// In the edge extension and removing it conforms to the |
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245 | /// \ref concept::Graph "Graph" concept. |
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246 | template <typename _Graph> |
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247 | class ListEdgeSet : public EdgeSetExtender<ListEdgeSetBase<_Graph> > { |
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248 | |
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249 | public: |
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250 | |
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251 | typedef EdgeSetExtender<ListEdgeSetBase<_Graph> > Parent; |
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252 | |
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253 | typedef typename Parent::Node Node; |
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254 | typedef typename Parent::Edge Edge; |
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255 | |
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256 | typedef _Graph Graph; |
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257 | |
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258 | |
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259 | typedef typename Parent::NodesImplBase NodesImplBase; |
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260 | |
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261 | void eraseNode(const Node& node) { |
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262 | Edge edge; |
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263 | Parent::firstOut(edge, node); |
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264 | while (edge != INVALID ) { |
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265 | erase(edge); |
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266 | Parent::firstOut(edge, node); |
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267 | } |
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268 | |
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269 | Parent::firstIn(edge, node); |
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270 | while (edge != INVALID ) { |
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271 | erase(edge); |
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272 | Parent::firstIn(edge, node); |
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273 | } |
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274 | } |
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275 | |
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276 | void clearNodes() { |
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277 | Parent::clear(); |
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278 | } |
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279 | |
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280 | class NodesImpl : public NodesImplBase { |
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281 | public: |
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282 | typedef NodesImplBase Parent; |
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283 | |
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284 | NodesImpl(const Graph& graph, ListEdgeSet& edgeset) |
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285 | : Parent(graph), _edgeset(edgeset) {} |
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286 | |
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287 | virtual ~NodesImpl() {} |
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288 | |
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289 | protected: |
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290 | |
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291 | virtual void erase(const Node& node) { |
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292 | _edgeset.eraseNode(node); |
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293 | Parent::erase(node); |
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294 | } |
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295 | virtual void erase(const std::vector<Node>& nodes) { |
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296 | for (int i = 0; i < (int)nodes.size(); ++i) { |
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297 | _edgeset.eraseNode(nodes[i]); |
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298 | } |
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299 | Parent::erase(nodes); |
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300 | } |
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301 | virtual void clear() { |
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302 | _edgeset.clearNodes(); |
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303 | Parent::clear(); |
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304 | } |
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305 | |
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306 | private: |
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307 | ListEdgeSet& _edgeset; |
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308 | }; |
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309 | |
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310 | NodesImpl nodes; |
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311 | |
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312 | public: |
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313 | |
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314 | /// \brief Constructor of the adaptor. |
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315 | /// |
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316 | /// Constructor of the adaptor. |
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317 | ListEdgeSet(const Graph& graph) : nodes(graph, *this) { |
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318 | Parent::initalize(graph, nodes); |
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319 | } |
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320 | |
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321 | }; |
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322 | |
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323 | /// \ingroup semi_adaptors |
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324 | /// |
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325 | /// \brief Graph using a node set of another graph and an |
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326 | /// own uedge set. |
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327 | /// |
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328 | /// This structure can be used to establish another graph over a node set |
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329 | /// of an existing one. The node iterator will go through the nodes of the |
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330 | /// original graph. |
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331 | /// |
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332 | /// \param _Graph The type of the graph which shares its node set with |
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333 | /// this class. Its interface must conform to the \ref concept::Graph |
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334 | /// "Graph" concept. |
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335 | /// |
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336 | /// In the edge extension and removing it conforms to the |
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337 | /// \ref concept::UGraph "UGraph" concept. |
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338 | template <typename _Graph> |
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339 | class ListUEdgeSet |
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340 | : public UEdgeSetExtender<UndirGraphExtender<ListEdgeSetBase<_Graph> > > { |
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341 | |
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342 | public: |
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343 | |
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344 | typedef UEdgeSetExtender<UndirGraphExtender< |
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345 | ListEdgeSetBase<_Graph> > > Parent; |
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346 | |
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347 | typedef typename Parent::Node Node; |
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348 | typedef typename Parent::Edge Edge; |
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349 | |
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350 | typedef _Graph Graph; |
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351 | |
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352 | |
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353 | typedef typename Parent::NodesImplBase NodesImplBase; |
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354 | |
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355 | void eraseNode(const Node& node) { |
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356 | Edge edge; |
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357 | Parent::firstOut(edge, node); |
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358 | while (edge != INVALID ) { |
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359 | erase(edge); |
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360 | Parent::firstOut(edge, node); |
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361 | } |
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362 | |
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363 | } |
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364 | |
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365 | void clearNodes() { |
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366 | Parent::clear(); |
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367 | } |
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368 | |
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369 | class NodesImpl : public NodesImplBase { |
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370 | public: |
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371 | typedef NodesImplBase Parent; |
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372 | |
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373 | NodesImpl(const Graph& graph, ListUEdgeSet& edgeset) |
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374 | : Parent(graph), _edgeset(edgeset) {} |
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375 | |
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376 | virtual ~NodesImpl() {} |
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377 | |
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378 | protected: |
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379 | |
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380 | virtual void erase(const Node& node) { |
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381 | _edgeset.eraseNode(node); |
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382 | Parent::erase(node); |
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383 | } |
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384 | virtual void erase(const std::vector<Node>& nodes) { |
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385 | for (int i = 0; i < (int)nodes.size(); ++i) { |
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386 | _edgeset.eraseNode(nodes[i]); |
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387 | } |
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388 | Parent::erase(nodes); |
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389 | } |
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390 | virtual void clear() { |
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391 | _edgeset.clearNodes(); |
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392 | Parent::clear(); |
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393 | } |
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394 | |
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395 | private: |
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396 | ListUEdgeSet& _edgeset; |
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397 | }; |
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398 | |
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399 | NodesImpl nodes; |
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400 | |
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401 | public: |
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402 | |
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403 | /// \brief Constructor of the adaptor. |
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404 | /// |
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405 | /// Constructor of the adaptor. |
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406 | ListUEdgeSet(const Graph& graph) : nodes(graph, *this) { |
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407 | Parent::initalize(graph, nodes); |
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408 | } |
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409 | |
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410 | }; |
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411 | |
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412 | template <typename _Graph> |
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413 | class SmartEdgeSetBase { |
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414 | public: |
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415 | |
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416 | typedef _Graph Graph; |
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417 | typedef typename Graph::Node Node; |
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418 | typedef typename Graph::NodeIt NodeIt; |
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419 | |
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420 | protected: |
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421 | |
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422 | struct NodeT { |
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423 | int first_out, first_in; |
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424 | NodeT() : first_out(-1), first_in(-1) {} |
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425 | }; |
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426 | |
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427 | typedef DefaultMap<Graph, Node, NodeT> NodesImplBase; |
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428 | |
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429 | NodesImplBase* nodes; |
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430 | |
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431 | struct EdgeT { |
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432 | Node source, target; |
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433 | int next_out, next_in; |
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434 | EdgeT() {} |
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435 | }; |
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436 | |
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437 | std::vector<EdgeT> edges; |
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438 | |
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439 | const Graph* graph; |
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440 | |
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441 | void initalize(const Graph& _graph, NodesImplBase& _nodes) { |
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442 | graph = &_graph; |
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443 | nodes = &_nodes; |
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444 | } |
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445 | |
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446 | public: |
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447 | |
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448 | class Edge { |
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449 | friend class SmartEdgeSetBase<Graph>; |
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450 | protected: |
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451 | Edge(int _id) : id(_id) {} |
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452 | int id; |
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453 | public: |
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454 | Edge() {} |
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455 | Edge(Invalid) : id(-1) {} |
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456 | bool operator==(const Edge& edge) const { return id == edge.id; } |
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457 | bool operator!=(const Edge& edge) const { return id != edge.id; } |
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458 | bool operator<(const Edge& edge) const { return id < edge.id; } |
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459 | }; |
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460 | |
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461 | SmartEdgeSetBase() {} |
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462 | |
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463 | Edge addEdge(const Node& source, const Node& target) { |
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464 | int n = edges.size(); |
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465 | edges.push_back(EdgeT()); |
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466 | edges[n].next_in = (*nodes)[target].first_in; |
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467 | (*nodes)[target].first_in = n; |
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468 | edges[n].next_out = (*nodes)[source].first_out; |
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469 | (*nodes)[source].first_out = n; |
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470 | edges[n].source = source; |
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471 | edges[n].target = target; |
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472 | return Edge(n); |
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473 | } |
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474 | |
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475 | void clear() { |
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476 | Node node; |
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477 | for (first(node); node != INVALID; next(node)) { |
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478 | (*nodes)[node].first_in = -1; |
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479 | (*nodes)[node].first_out = -1; |
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480 | } |
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481 | edges.clear(); |
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482 | } |
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483 | |
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484 | void first(Node& node) const { |
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485 | graph->first(node); |
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486 | } |
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487 | |
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488 | void next(Node& node) const { |
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489 | graph->next(node); |
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490 | } |
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491 | |
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492 | void first(Edge& edge) const { |
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493 | edge.id = edges.size() - 1; |
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494 | } |
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495 | |
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496 | void next(Edge& edge) const { |
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497 | --edge.id; |
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498 | } |
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499 | |
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500 | void firstOut(Edge& edge, const Node& node) const { |
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501 | edge.id = (*nodes)[node].first_out; |
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502 | } |
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503 | |
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504 | void nextOut(Edge& edge) const { |
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505 | edge.id = edges[edge.id].next_out; |
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506 | } |
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507 | |
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508 | void firstIn(Edge& edge, const Node& node) const { |
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509 | edge.id = (*nodes)[node].first_in; |
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510 | } |
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511 | |
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512 | void nextIn(Edge& edge) const { |
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513 | edge.id = edges[edge.id].next_in; |
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514 | } |
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515 | |
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516 | int id(const Node& node) const { return graph->id(node); } |
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517 | int id(const Edge& edge) const { return edge.id; } |
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518 | |
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519 | Node nodeFromId(int id) const { return graph->nodeFromId(id); } |
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520 | Edge edgeFromId(int id) const { return Edge(id); } |
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521 | |
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522 | int maxNodeId() const { return graph->maxNodeId(); }; |
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523 | int maxEdgeId() const { return edges.size() - 1; } |
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524 | |
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525 | Node source(const Edge& edge) const { return edges[edge.id].source;} |
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526 | Node target(const Edge& edge) const { return edges[edge.id].target;} |
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527 | |
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528 | typedef typename ItemSetTraits<Graph, Node>::ItemNotifier NodeNotifier; |
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529 | |
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530 | NodeNotifier& getNotifier(Node) const { |
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531 | return graph->getNotifier(Node()); |
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532 | } |
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533 | |
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534 | template <typename _Value> |
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535 | class NodeMap : public Graph::template NodeMap<_Value> { |
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536 | public: |
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537 | |
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538 | typedef typename _Graph::template NodeMap<_Value> Parent; |
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539 | |
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540 | explicit NodeMap(const SmartEdgeSetBase<Graph>& edgeset) |
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541 | : Parent(*edgeset.graph) { } |
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542 | |
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543 | NodeMap(const SmartEdgeSetBase<Graph>& edgeset, const _Value& value) |
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544 | : Parent(*edgeset.graph, value) { } |
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545 | |
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546 | NodeMap& operator=(const NodeMap& cmap) { |
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547 | return operator=<NodeMap>(cmap); |
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548 | } |
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549 | |
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550 | template <typename CMap> |
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551 | NodeMap& operator=(const CMap& cmap) { |
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552 | Parent::operator=(cmap); |
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553 | return *this; |
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554 | } |
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555 | }; |
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556 | |
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557 | }; |
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558 | |
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559 | |
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560 | /// \ingroup semi_adaptors |
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561 | /// |
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562 | /// \brief Graph using a node set of another graph and an |
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563 | /// own edge set. |
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564 | /// |
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565 | /// This structure can be used to establish another graph over a node set |
---|
566 | /// of an existing one. The node iterator will go through the nodes of the |
---|
567 | /// original graph. |
---|
568 | /// |
---|
569 | /// \param _Graph The type of the graph which shares its node set with |
---|
570 | /// this class. Its interface must conform to the \ref concept::Graph |
---|
571 | /// "Graph" concept. |
---|
572 | /// |
---|
573 | /// In the edge extension and removing it conforms to the |
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574 | /// \ref concept::Graph "Graph" concept. |
---|
575 | template <typename _Graph> |
---|
576 | class SmartEdgeSet : public EdgeSetExtender<SmartEdgeSetBase<_Graph> > { |
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577 | |
---|
578 | public: |
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579 | |
---|
580 | typedef EdgeSetExtender<SmartEdgeSetBase<_Graph> > Parent; |
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581 | |
---|
582 | typedef typename Parent::Node Node; |
---|
583 | typedef typename Parent::Edge Edge; |
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584 | |
---|
585 | typedef _Graph Graph; |
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586 | |
---|
587 | protected: |
---|
588 | |
---|
589 | typedef typename Parent::NodesImplBase NodesImplBase; |
---|
590 | |
---|
591 | void eraseNode(const Node& node) { |
---|
592 | if (Parent::InEdgeIt(*this, node) == INVALID && |
---|
593 | Parent::OutEdgeIt(*this, node) == INVALID) { |
---|
594 | return; |
---|
595 | } |
---|
596 | throw typename NodesImplBase::Notifier::ImmediateDetach(); |
---|
597 | } |
---|
598 | |
---|
599 | void clearNodes() { |
---|
600 | Parent::clear(); |
---|
601 | } |
---|
602 | |
---|
603 | class NodesImpl : public NodesImplBase { |
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604 | public: |
---|
605 | typedef NodesImplBase Parent; |
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606 | |
---|
607 | NodesImpl(const Graph& graph, SmartEdgeSet& edgeset) |
---|
608 | : Parent(graph), _edgeset(edgeset) {} |
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609 | |
---|
610 | virtual ~NodesImpl() {} |
---|
611 | |
---|
612 | bool attached() const { |
---|
613 | return Parent::attached(); |
---|
614 | } |
---|
615 | |
---|
616 | protected: |
---|
617 | |
---|
618 | virtual void erase(const Node& node) { |
---|
619 | try { |
---|
620 | _edgeset.eraseNode(node); |
---|
621 | Parent::erase(node); |
---|
622 | } catch (const typename NodesImplBase::Notifier::ImmediateDetach&) { |
---|
623 | Parent::clear(); |
---|
624 | throw; |
---|
625 | } |
---|
626 | } |
---|
627 | virtual void erase(const std::vector<Node>& nodes) { |
---|
628 | try { |
---|
629 | for (int i = 0; i < (int)nodes.size(); ++i) { |
---|
630 | _edgeset.eraseNode(nodes[i]); |
---|
631 | } |
---|
632 | Parent::erase(nodes); |
---|
633 | } catch (const typename NodesImplBase::Notifier::ImmediateDetach&) { |
---|
634 | Parent::clear(); |
---|
635 | throw; |
---|
636 | } |
---|
637 | } |
---|
638 | virtual void clear() { |
---|
639 | _edgeset.clearNodes(); |
---|
640 | Parent::clear(); |
---|
641 | } |
---|
642 | |
---|
643 | private: |
---|
644 | SmartEdgeSet& _edgeset; |
---|
645 | }; |
---|
646 | |
---|
647 | NodesImpl nodes; |
---|
648 | |
---|
649 | public: |
---|
650 | |
---|
651 | /// \brief Constructor of the adaptor. |
---|
652 | /// |
---|
653 | /// Constructor of the adaptor. |
---|
654 | SmartEdgeSet(const Graph& graph) : nodes(graph, *this) { |
---|
655 | Parent::initalize(graph, nodes); |
---|
656 | } |
---|
657 | |
---|
658 | bool valid() const { |
---|
659 | return nodes.attached(); |
---|
660 | } |
---|
661 | |
---|
662 | }; |
---|
663 | |
---|
664 | /// \ingroup semi_adaptors |
---|
665 | /// |
---|
666 | /// \brief Graph using a node set of another graph and an |
---|
667 | /// own uedge set. |
---|
668 | /// |
---|
669 | /// This structure can be used to establish another graph over a node set |
---|
670 | /// of an existing one. The node iterator will go through the nodes of the |
---|
671 | /// original graph. |
---|
672 | /// |
---|
673 | /// \param _Graph The type of the graph which shares its node set with |
---|
674 | /// this class. Its interface must conform to the \ref concept::Graph |
---|
675 | /// "Graph" concept. |
---|
676 | /// |
---|
677 | /// In the edge extension and removing it conforms to the |
---|
678 | /// \ref concept::UGraph "UGraph" concept. |
---|
679 | template <typename _Graph> |
---|
680 | class SmartUEdgeSet |
---|
681 | : public UEdgeSetExtender<UndirGraphExtender<SmartEdgeSetBase<_Graph> > > { |
---|
682 | |
---|
683 | public: |
---|
684 | |
---|
685 | typedef UEdgeSetExtender<UndirGraphExtender< |
---|
686 | SmartEdgeSetBase<_Graph> > > Parent; |
---|
687 | |
---|
688 | typedef typename Parent::Node Node; |
---|
689 | typedef typename Parent::Edge Edge; |
---|
690 | |
---|
691 | typedef _Graph Graph; |
---|
692 | |
---|
693 | protected: |
---|
694 | |
---|
695 | typedef typename Parent::NodesImplBase NodesImplBase; |
---|
696 | |
---|
697 | void eraseNode(const Node& node) { |
---|
698 | if (typename Parent::IncEdgeIt(*this, node) == INVALID) { |
---|
699 | return; |
---|
700 | } |
---|
701 | throw typename NodesImplBase::Notifier::ImmediateDetach(); |
---|
702 | } |
---|
703 | |
---|
704 | void clearNodes() { |
---|
705 | Parent::clear(); |
---|
706 | } |
---|
707 | |
---|
708 | class NodesImpl : public NodesImplBase { |
---|
709 | public: |
---|
710 | typedef NodesImplBase Parent; |
---|
711 | |
---|
712 | NodesImpl(const Graph& graph, SmartUEdgeSet& edgeset) |
---|
713 | : Parent(graph), _edgeset(edgeset) {} |
---|
714 | |
---|
715 | virtual ~NodesImpl() {} |
---|
716 | |
---|
717 | bool attached() const { |
---|
718 | return Parent::attached(); |
---|
719 | } |
---|
720 | |
---|
721 | protected: |
---|
722 | |
---|
723 | virtual void erase(const Node& node) { |
---|
724 | try { |
---|
725 | _edgeset.eraseNode(node); |
---|
726 | Parent::erase(node); |
---|
727 | } catch (const typename NodesImplBase::Notifier::ImmediateDetach&) { |
---|
728 | Parent::clear(); |
---|
729 | throw; |
---|
730 | } |
---|
731 | } |
---|
732 | virtual void erase(const std::vector<Node>& nodes) { |
---|
733 | try { |
---|
734 | for (int i = 0; i < (int)nodes.size(); ++i) { |
---|
735 | _edgeset.eraseNode(nodes[i]); |
---|
736 | } |
---|
737 | Parent::erase(nodes); |
---|
738 | } catch (const typename NodesImplBase::Notifier::ImmediateDetach&) { |
---|
739 | Parent::clear(); |
---|
740 | throw; |
---|
741 | } |
---|
742 | } |
---|
743 | virtual void clear() { |
---|
744 | _edgeset.clearNodes(); |
---|
745 | Parent::clear(); |
---|
746 | } |
---|
747 | |
---|
748 | private: |
---|
749 | SmartUEdgeSet& _edgeset; |
---|
750 | }; |
---|
751 | |
---|
752 | NodesImpl nodes; |
---|
753 | |
---|
754 | public: |
---|
755 | |
---|
756 | /// \brief Constructor of the adaptor. |
---|
757 | /// |
---|
758 | /// Constructor of the adaptor. |
---|
759 | SmartUEdgeSet(const Graph& graph) : nodes(graph, *this) { |
---|
760 | Parent::initalize(graph, nodes); |
---|
761 | } |
---|
762 | |
---|
763 | bool valid() const { |
---|
764 | return nodes.attached(); |
---|
765 | } |
---|
766 | |
---|
767 | }; |
---|
768 | |
---|
769 | } |
---|
770 | |
---|
771 | #endif |
---|