1 | /* -*- mode: C++; indent-tabs-mode: nil; -*- |
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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) 2015 |
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6 | * EMAXA Kutato-fejleszto Kft. (EMAXA Research Ltd.) |
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7 | * |
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8 | * Permission to use, modify and distribute this software is granted |
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9 | * provided that this copyright notice appears in all copies. For |
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10 | * precise terms see the accompanying LICENSE file. |
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11 | * |
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12 | * This software is provided "AS IS" with no warranty of any kind, |
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13 | * express or implied, and with no claim as to its suitability for any |
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14 | * purpose. |
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15 | * |
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16 | */ |
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17 | |
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18 | #include <lemon/vf2.h> |
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19 | #include <lemon/concepts/digraph.h> |
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20 | #include <lemon/smart_graph.h> |
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21 | #include <lemon/lgf_reader.h> |
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22 | #include <lemon/concepts/maps.h> |
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23 | |
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24 | #include <test/test_tools.h> |
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25 | #include <sstream> |
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26 | |
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27 | using namespace lemon; |
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28 | |
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29 | char petersen_lgf[] = |
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30 | "@nodes\n" |
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31 | "label col1 col2\n" |
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32 | "0 1 1\n" |
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33 | "1 1 2\n" |
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34 | "2 1 3\n" |
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35 | "3 1 4\n" |
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36 | "4 2 5\n" |
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37 | "5 2 1\n" |
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38 | "6 2 2\n" |
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39 | "7 2 3\n" |
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40 | "8 2 4\n" |
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41 | "9 2 5\n" |
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42 | "@arcs\n" |
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43 | " -\n" |
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44 | "0 1\n" |
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45 | "1 2\n" |
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46 | "2 3\n" |
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47 | "3 4\n" |
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48 | "4 0\n" |
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49 | "0 5\n" |
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50 | "1 6\n" |
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51 | "2 7\n" |
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52 | "3 8\n" |
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53 | "4 9\n" |
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54 | "5 8\n" |
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55 | "5 7\n" |
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56 | "9 6\n" |
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57 | "9 7\n" |
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58 | "6 8\n"; |
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59 | |
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60 | char c5_lgf[] = |
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61 | "@nodes\n" |
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62 | "label col\n" |
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63 | "0 1\n" |
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64 | "1 2\n" |
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65 | "2 3\n" |
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66 | "3 4\n" |
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67 | "4 5\n" |
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68 | "@arcs\n" |
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69 | " -\n" |
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70 | "0 1\n" |
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71 | "1 2\n" |
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72 | "2 3\n" |
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73 | "3 4\n" |
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74 | "4 0\n"; |
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75 | |
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76 | char c7_lgf[] = |
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77 | "@nodes\n" |
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78 | "label\n" |
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79 | "0\n" |
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80 | "1\n" |
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81 | "2\n" |
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82 | "3\n" |
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83 | "4\n" |
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84 | "5\n" |
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85 | "6\n" |
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86 | "@arcs\n" |
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87 | " -\n" |
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88 | "0 1\n" |
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89 | "1 2\n" |
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90 | "2 3\n" |
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91 | "3 4\n" |
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92 | "4 5\n" |
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93 | "5 6\n" |
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94 | "6 0\n"; |
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95 | |
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96 | char c10_lgf[] = |
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97 | "@nodes\n" |
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98 | "label\n" |
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99 | "0\n" |
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100 | "1\n" |
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101 | "2\n" |
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102 | "3\n" |
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103 | "4\n" |
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104 | "5\n" |
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105 | "6\n" |
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106 | "7\n" |
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107 | "8\n" |
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108 | "9\n" |
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109 | "@arcs\n" |
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110 | " -\n" |
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111 | "0 1\n" |
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112 | "1 2\n" |
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113 | "2 3\n" |
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114 | "3 4\n" |
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115 | "4 5\n" |
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116 | "5 6\n" |
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117 | "6 7\n" |
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118 | "7 8\n" |
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119 | "8 9\n" |
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120 | "9 0\n"; |
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121 | |
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122 | char p10_lgf[] = |
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123 | "@nodes\n" |
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124 | "label\n" |
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125 | "0\n" |
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126 | "1\n" |
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127 | "2\n" |
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128 | "3\n" |
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129 | "4\n" |
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130 | "5\n" |
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131 | "6\n" |
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132 | "7\n" |
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133 | "8\n" |
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134 | "9\n" |
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135 | "@arcs\n" |
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136 | " -\n" |
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137 | "0 1\n" |
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138 | "1 2\n" |
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139 | "2 3\n" |
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140 | "3 4\n" |
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141 | "4 5\n" |
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142 | "5 6\n" |
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143 | "6 7\n" |
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144 | "7 8\n" |
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145 | "8 9\n"; |
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146 | |
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147 | SmartGraph petersen, c5, c7, c10, p10; |
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148 | SmartGraph::NodeMap<int> petersen_col1(petersen); |
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149 | SmartGraph::NodeMap<int> petersen_col2(petersen); |
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150 | SmartGraph::NodeMap<int> c5_col(c5); |
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151 | |
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152 | void make_graphs() { |
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153 | std::stringstream ss(petersen_lgf); |
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154 | graphReader(petersen, ss) |
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155 | .nodeMap("col1",petersen_col1) |
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156 | .nodeMap("col2",petersen_col2) |
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157 | .run(); |
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158 | |
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159 | ss.clear(); |
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160 | ss.str(""); |
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161 | ss<<c5_lgf; |
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162 | //std::stringstream ss2(c5_lgf); |
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163 | graphReader(c5, ss) |
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164 | .nodeMap("col",c5_col) |
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165 | .run(); |
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166 | |
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167 | ss.clear(); |
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168 | ss.str(""); |
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169 | ss<<c7_lgf; |
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170 | graphReader(c7, ss).run(); |
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171 | |
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172 | ss.clear(); |
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173 | ss.str(""); |
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174 | ss<<c10_lgf; |
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175 | graphReader(c10, ss).run(); |
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176 | |
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177 | ss.clear(); |
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178 | ss.str(""); |
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179 | ss<<p10_lgf; |
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180 | graphReader(p10, ss).run(); |
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181 | |
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182 | } |
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183 | |
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184 | class EqComparable { |
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185 | public: |
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186 | bool operator==(const EqComparable&) { return false; } |
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187 | }; |
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188 | |
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189 | template<class A, class B> |
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190 | class EqClass { |
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191 | public: |
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192 | bool operator()(A, B) { return false; } |
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193 | }; |
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194 | |
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195 | template<class G1,class G2> |
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196 | void checkVf2Compile() |
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197 | { |
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198 | G1 g; |
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199 | G2 h; |
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200 | concepts::ReadWriteMap<typename G1::Node, typename G2::Node> r; |
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201 | bool succ; |
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202 | ::lemon::ignore_unused_variable_warning(succ); |
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203 | |
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204 | succ = vf2(g,h).run(); |
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205 | succ = vf2(g,h).induced().run(); |
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206 | succ = vf2(g,h).iso().run(); |
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207 | succ = vf2(g,h).mapping(r).run(); |
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208 | succ = vf2(g,h).induced().mapping(r).run(); |
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209 | succ = vf2(g,h).iso().mapping(r).run(); |
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210 | concepts::ReadMap<typename G1::Node, EqComparable> l1; |
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211 | concepts::ReadMap<typename G2::Node, EqComparable> l2; |
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212 | succ = vf2(g,h).nodeLabels(l1,l2).mapping(r).run(); |
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213 | succ = vf2(g,h).nodeEq(EqClass<typename G1::Node,typename G2::Node>()) |
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214 | .mapping(r).run(); |
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215 | } |
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216 | |
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217 | void justCompile() |
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218 | { |
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219 | checkVf2Compile<concepts::Graph,concepts::Graph>(); |
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220 | checkVf2Compile<concepts::Graph,SmartGraph>(); |
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221 | checkVf2Compile<SmartGraph,concepts::Graph>(); |
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222 | } |
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223 | |
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224 | template<class G1, class G2, class I> |
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225 | void checkSub(const G1 &g1, const G2 &g2, const I &i) |
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226 | { |
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227 | { |
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228 | std::set<typename G2::Node> image; |
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229 | for(typename G1::NodeIt n(g1);n!=INVALID;++n) |
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230 | { |
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231 | check(i[n]!=INVALID, "Wrong isomorphism: incomplete mapping."); |
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232 | check(image.count(i[n])==0,"Wrong isomorphism: not injective."); |
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233 | image.insert(i[n]); |
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234 | } |
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235 | } |
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236 | for(typename G1::EdgeIt e(g1);e!=INVALID;++e) |
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237 | check(findEdge(g2,i[g1.u(e)],i[g1.v(e)])!=INVALID, |
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238 | "Wrong isomorphism: missing edge(checkSub)."); |
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239 | } |
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240 | |
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241 | template<class G1, class G2, class I> |
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242 | void checkInd(const G1 &g1, const G2 &g2, const I &i) |
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243 | { |
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244 | std::set<typename G2::Node> image; |
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245 | for(typename G1::NodeIt n(g1);n!=INVALID;++n) |
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246 | { |
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247 | check(i[n]!=INVALID, "Wrong isomorphism: incomplete mapping."); |
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248 | check(image.count(i[n])==0,"Wrong isomorphism: not injective."); |
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249 | image.insert(i[n]); |
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250 | } |
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251 | for(typename G1::NodeIt n(g1); n!=INVALID; ++n) |
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252 | for(typename G1::NodeIt m(g1); m!=INVALID; ++m) |
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253 | if((findEdge(g1,n,m)==INVALID) != (findEdge(g2,i[n],i[m])==INVALID)) |
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254 | { |
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255 | std::cout << "Wrong isomorphism: edge mismatch"; |
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256 | exit(1); |
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257 | } |
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258 | } |
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259 | |
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260 | template<class G1,class G2> |
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261 | int checkSub(const G1 &g1, const G2 &g2) |
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262 | { |
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263 | typename G1:: template NodeMap<typename G2::Node> iso(g1,INVALID); |
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264 | if(vf2(g1,g2).mapping(iso).run()) |
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265 | { |
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266 | checkSub(g1,g2,iso); |
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267 | return true; |
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268 | } |
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269 | else return false; |
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270 | } |
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271 | |
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272 | template<class G1,class G2> |
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273 | int checkInd(const G1 &g1, const G2 &g2) |
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274 | { |
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275 | typename G1:: template NodeMap<typename G2::Node> iso(g1,INVALID); |
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276 | if(vf2(g1,g2).induced().mapping(iso).run()) |
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277 | { |
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278 | checkInd(g1,g2,iso); |
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279 | return true; |
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280 | } |
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281 | else return false; |
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282 | } |
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283 | |
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284 | template<class G1,class G2> |
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285 | int checkIso(const G1 &g1, const G2 &g2) |
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286 | { |
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287 | typename G1:: template NodeMap<typename G2::Node> iso(g1,INVALID); |
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288 | if(vf2(g1,g2).iso().mapping(iso).run()) |
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289 | { |
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290 | check(countNodes(g1)==countNodes(g2), |
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291 | "Wrong iso alg.: they are not isomophic."); |
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292 | checkInd(g1,g2,iso); |
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293 | return true; |
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294 | } |
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295 | else return false; |
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296 | } |
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297 | |
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298 | template<class G1, class G2, class L1, class L2, class I> |
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299 | void checkLabel(const G1 &g1, const G2 &, |
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300 | const L1 &l1, const L2 &l2,const I &i) |
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301 | { |
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302 | for(typename G1::NodeIt n(g1);n!=INVALID;++n) |
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303 | { |
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304 | check(l1[n]==l2[i[n]],"Wrong isomorphism: label mismatch."); |
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305 | } |
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306 | } |
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307 | |
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308 | template<class G1,class G2,class L1,class L2> |
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309 | int checkSub(const G1 &g1, const G2 &g2, const L1 &l1, const L2 &l2) |
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310 | { |
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311 | typename G1:: template NodeMap<typename G2::Node> iso(g1,INVALID); |
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312 | if(vf2(g1,g2).nodeLabels(l1,l2).mapping(iso).run()) |
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313 | { |
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314 | checkSub(g1,g2,iso); |
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315 | checkLabel(g1,g2,l1,l2,iso); |
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316 | return true; |
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317 | } |
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318 | else return false; |
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319 | } |
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320 | |
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321 | int main() { |
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322 | make_graphs(); |
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323 | check(checkSub(c5,petersen), "There should exist a C5->Petersen mapping."); |
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324 | check(!checkSub(c7,petersen), |
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325 | "There should not exist a C7->Petersen mapping."); |
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326 | check(checkSub(p10,petersen), "There should exist a P10->Petersen mapping."); |
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327 | check(!checkSub(c10,petersen), |
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328 | "There should not exist a C10->Petersen mapping."); |
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329 | check(checkSub(petersen,petersen), |
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330 | "There should exist a Petersen->Petersen mapping."); |
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331 | |
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332 | check(checkInd(c5,petersen), |
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333 | "There should exist a C5->Petersen spanned mapping."); |
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334 | check(!checkInd(c7,petersen), |
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335 | "There should exist a C7->Petersen spanned mapping."); |
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336 | check(!checkInd(p10,petersen), |
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337 | "There should not exist a P10->Petersen spanned mapping."); |
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338 | check(!checkInd(c10,petersen), |
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339 | "There should not exist a C10->Petersen spanned mapping."); |
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340 | check(checkInd(petersen,petersen), |
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341 | "There should exist a Petersen->Petersen spanned mapping."); |
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342 | |
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343 | check(!checkSub(petersen,c10), |
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344 | "There should not exist a Petersen->C10 mapping."); |
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345 | check(checkSub(p10,c10), |
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346 | "There should exist a P10->C10 mapping."); |
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347 | check(!checkInd(p10,c10), |
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348 | "There should not exist a P10->C10 spanned mapping."); |
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349 | check(!checkSub(c10,p10), |
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350 | "There should not exist a C10->P10 mapping."); |
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351 | |
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352 | check(!checkIso(p10,c10), |
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353 | "P10 and C10 are not isomorphic."); |
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354 | check(checkIso(c10,c10), |
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355 | "C10 and C10 are isomorphic."); |
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356 | |
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357 | check(!vf2(p10,c10).iso().run(), |
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358 | "P10 and C10 are not isomorphic."); |
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359 | check(vf2(c10,c10).iso().run(), |
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360 | "C10 and C10 are isomorphic."); |
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361 | |
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362 | check(!checkSub(c5,petersen,c5_col,petersen_col1), |
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363 | "There should exist a C5->Petersen mapping."); |
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364 | check(checkSub(c5,petersen,c5_col,petersen_col2), |
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365 | "There should exist a C5->Petersen mapping."); |
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366 | } |
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