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1 <html>
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2 <head>
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3 <title>MayaChemTools:Code:Graph::PathsTraversal.pm</title>
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4 <meta http-equiv="content-type" content="text/html;charset=utf-8">
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5 <link rel="stylesheet" type="text/css" href="../../../css/MayaChemToolsCode.css">
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6 </head>
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7 <body leftmargin="20" rightmargin="20" topmargin="10" bottommargin="10">
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8 <br/>
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9 <center>
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10 <a href="http://www.mayachemtools.org" title="MayaChemTools Home"><img src="../../../images/MayaChemToolsLogo.gif" border="0" alt="MayaChemTools"></a>
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11 </center>
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12 <br/>
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13 <pre>
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14 <a name="package-Graph::PathsTraversal-"></a> 1 <span class="k">package </span><span class="i">Graph::PathsTraversal</span><span class="sc">;</span>
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15 2 <span class="c">#</span>
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16 3 <span class="c"># $RCSfile: PathsTraversal.pm,v $</span>
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17 4 <span class="c"># $Date: 2015/02/28 20:49:06 $</span>
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18 5 <span class="c"># $Revision: 1.29 $</span>
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19 6 <span class="c">#</span>
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20 7 <span class="c"># Author: Manish Sud &lt;msud@san.rr.com&gt;</span>
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21 8 <span class="c">#</span>
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22 9 <span class="c"># Copyright (C) 2015 Manish Sud. All rights reserved.</span>
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23 10 <span class="c">#</span>
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24 11 <span class="c"># This file is part of MayaChemTools.</span>
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25 12 <span class="c">#</span>
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26 13 <span class="c"># MayaChemTools is free software; you can redistribute it and/or modify it under</span>
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27 14 <span class="c"># the terms of the GNU Lesser General Public License as published by the Free</span>
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28 15 <span class="c"># Software Foundation; either version 3 of the License, or (at your option) any</span>
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29 16 <span class="c"># later version.</span>
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30 17 <span class="c">#</span>
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31 18 <span class="c"># MayaChemTools is distributed in the hope that it will be useful, but without</span>
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32 19 <span class="c"># any warranty; without even the implied warranty of merchantability of fitness</span>
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33 20 <span class="c"># for a particular purpose. See the GNU Lesser General Public License for more</span>
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34 21 <span class="c"># details.</span>
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35 22 <span class="c">#</span>
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36 23 <span class="c"># You should have received a copy of the GNU Lesser General Public License</span>
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37 24 <span class="c"># along with MayaChemTools; if not, see &lt;http://www.gnu.org/licenses/&gt; or</span>
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38 25 <span class="c"># write to the Free Software Foundation Inc., 59 Temple Place, Suite 330,</span>
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39 26 <span class="c"># Boston, MA, 02111-1307, USA.</span>
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40 27 <span class="c">#</span>
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41 28
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42 29 <span class="k">use</span> <span class="w">strict</span><span class="sc">;</span>
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43 30 <span class="k">use</span> <span class="w">Carp</span><span class="sc">;</span>
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44 31 <span class="k">use</span> <span class="w">Exporter</span><span class="sc">;</span>
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45 32 <span class="k">use</span> <span class="w">Graph</span><span class="sc">;</span>
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46 33 <span class="k">use</span> <span class="w">Graph::Path</span><span class="sc">;</span>
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47 34
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48 35 <span class="k">use</span> <span class="w">vars</span> <span class="q">qw(@ISA @EXPORT @EXPORT_OK %EXPORT_TAGS)</span><span class="sc">;</span>
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49 36
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50 37 <span class="i">@ISA</span> = <span class="q">qw(Exporter)</span><span class="sc">;</span>
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51 38 <span class="i">@EXPORT</span> = <span class="q">qw()</span><span class="sc">;</span>
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52 39 <span class="i">@EXPORT_OK</span> = <span class="q">qw()</span><span class="sc">;</span>
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53 40
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54 41 <span class="i">%EXPORT_TAGS</span> = <span class="s">(</span><span class="w">all</span> <span class="cm">=&gt;</span> <span class="s">[</span><span class="i">@EXPORT</span><span class="cm">,</span> <span class="i">@EXPORT_OK</span><span class="s">]</span><span class="s">)</span><span class="sc">;</span>
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55 42
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56 43 <span class="c"># Setup class variables...</span>
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57 44 <span class="k">my</span><span class="s">(</span><span class="i">$ClassName</span><span class="s">)</span><span class="sc">;</span>
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58 45 <span class="i">_InitializeClass</span><span class="s">(</span><span class="s">)</span><span class="sc">;</span>
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59 46
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60 47 <span class="c"># Overload Perl functions...</span>
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61 48 <span class="k">use</span> <span class="w">overload</span> <span class="q">&#39;&quot;&quot;&#39;</span> <span class="cm">=&gt;</span> <span class="q">&#39;StringifyPathsTraversal&#39;</span><span class="sc">;</span>
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62 49
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63 50 <span class="c"># Class constructor...</span>
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64 <a name="new-"></a> 51 <span class="k">sub </span><span class="m">new</span> <span class="s">{</span>
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65 52 <span class="k">my</span><span class="s">(</span><span class="i">$Class</span><span class="cm">,</span> <span class="i">$Graph</span><span class="s">)</span> = <span class="i">@_</span><span class="sc">;</span>
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66 53
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67 54 <span class="c"># Initialize object...</span>
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68 55 <span class="k">my</span> <span class="i">$This</span> = <span class="s">{</span><span class="s">}</span><span class="sc">;</span>
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69 56 <span class="k">bless</span> <span class="i">$This</span><span class="cm">,</span> <span class="k">ref</span><span class="s">(</span><span class="i">$Class</span><span class="s">)</span> || <span class="i">$Class</span><span class="sc">;</span>
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70 57 <span class="i">$This</span><span class="i">-&gt;_InitializePathsTraversal</span><span class="s">(</span><span class="i">$Graph</span><span class="s">)</span><span class="sc">;</span>
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71 58
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72 59 <span class="k">return</span> <span class="i">$This</span><span class="sc">;</span>
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73 60 <span class="s">}</span>
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74 61
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75 62 <span class="c"># Initialize object data...</span>
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76 <a name="_InitializePathsTraversal-"></a> 63 <span class="k">sub </span><span class="m">_InitializePathsTraversal</span> <span class="s">{</span>
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77 64 <span class="k">my</span><span class="s">(</span><span class="i">$This</span><span class="cm">,</span> <span class="i">$Graph</span><span class="s">)</span> = <span class="i">@_</span><span class="sc">;</span>
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78 65
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79 66 <span class="c"># Graph object...</span>
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80 67 <span class="i">$This</span>-&gt;{<span class="w">Graph</span>} = <span class="i">$Graph</span><span class="sc">;</span>
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81 68
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82 69 <span class="c"># Traversal mode: Vertex or Path</span>
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83 70 <span class="i">$This</span>-&gt;{<span class="w">TraversalMode</span>} = <span class="q">&#39;&#39;</span><span class="sc">;</span>
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84 71
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85 72 <span class="c"># Traversal type: DFS, DFSWithLimit, BFS, BFSWithLimit...</span>
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86 73 <span class="i">$This</span>-&gt;{<span class="w">TraversalType</span>} = <span class="q">&#39;&#39;</span><span class="sc">;</span>
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87 74
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88 75 <span class="c"># For finding root vertex and controlling search...</span>
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89 76 <span class="k">my</span><span class="s">(</span><span class="i">@VertexIDs</span><span class="s">)</span><span class="sc">;</span>
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90 77 <span class="i">@VertexIDs</span> = <span class="i">$This</span>-&gt;{<span class="w">Graph</span>}<span class="i">-&gt;GetVertices</span><span class="s">(</span><span class="s">)</span><span class="sc">;</span>
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91 78 <span class="i">%</span>{<span class="i">$This</span>-&gt;{<span class="w">VerticesToVisit</span>}} = <span class="s">(</span><span class="s">)</span><span class="sc">;</span>
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92 79 <span class="i">@</span>{<span class="i">$This</span>-&gt;{<span class="w">VerticesToVisit</span>}}{ <span class="i">@VertexIDs</span> } = <span class="i">@VertexIDs</span><span class="sc">;</span>
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93 80
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94 81 <span class="c"># Root vertex of all visited vertices...</span>
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95 82 <span class="i">%</span>{<span class="i">$This</span>-&gt;{<span class="w">VerticesRoots</span>}} = <span class="s">(</span><span class="s">)</span><span class="sc">;</span>
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96 83
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97 84 <span class="c"># Visited vertices...</span>
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98 85 <span class="i">%</span>{<span class="i">$This</span>-&gt;{<span class="w">VisitedVertices</span>}} = <span class="s">(</span><span class="s">)</span><span class="sc">;</span>
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99 86
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100 87 <span class="c"># Finished vertices...</span>
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101 88 <span class="i">%</span>{<span class="i">$This</span>-&gt;{<span class="w">FinishedVertices</span>}} = <span class="s">(</span><span class="s">)</span><span class="sc">;</span>
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102 89
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103 90 <span class="c"># List of active vertices during DFS/BFS search...</span>
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104 91 <span class="i">@</span>{<span class="i">$This</span>-&gt;{<span class="w">ActiveVertices</span>}} = <span class="s">(</span><span class="s">)</span><span class="sc">;</span>
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105 92
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106 93 <span class="c"># List of ordered vertices traversed during DFS/BFS search...</span>
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107 94 <span class="i">@</span>{<span class="i">$This</span>-&gt;{<span class="w">Vertices</span>}} = <span class="s">(</span><span class="s">)</span><span class="sc">;</span>
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108 95
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109 96 <span class="c"># Vertex neighbors during traversal...</span>
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110 97 <span class="i">%</span>{<span class="i">$This</span>-&gt;{<span class="w">VerticesNeighbors</span>}} = <span class="s">(</span><span class="s">)</span><span class="sc">;</span>
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111 98
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112 99 <span class="c"># Vertices depth from root...</span>
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113 100 <span class="i">%</span>{<span class="i">$This</span>-&gt;{<span class="w">VerticesDepth</span>}} = <span class="s">(</span><span class="s">)</span><span class="sc">;</span>
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114 101
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115 102 <span class="c"># Predecessor of each vertex during vertex traversal. For root vertex, it&#39;s root itself...</span>
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116 103 <span class="i">%</span>{<span class="i">$This</span>-&gt;{<span class="w">VerticesPredecessors</span>}} = <span class="s">(</span><span class="s">)</span><span class="sc">;</span>
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117 104
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118 105 <span class="c"># Successors of each vertex during vertex traversal...</span>
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119 106 <span class="i">%</span>{<span class="i">$This</span>-&gt;{<span class="w">VerticesSuccessors</span>}} = <span class="s">(</span><span class="s">)</span><span class="sc">;</span>
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120 107
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121 108 <span class="c"># Vertices at different neighborhood levels during vertex traversal...</span>
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122 109 <span class="i">@</span>{<span class="i">$This</span>-&gt;{<span class="w">VerticesNeighborhoods</span>}} = <span class="s">(</span><span class="s">)</span><span class="sc">;</span>
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123 110
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124 111 <span class="c"># Vertices, along with their successors, at different neighborhood levels during vertex traversal...</span>
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125 112 <span class="i">@</span>{<span class="i">$This</span>-&gt;{<span class="w">VerticesNeighborhoodsWithSuccessors</span>}} = <span class="s">(</span><span class="s">)</span><span class="sc">;</span>
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126 113
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127 114 <span class="c"># Visited edges during Path TraversalMode...</span>
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128 115 <span class="i">%</span>{<span class="i">$This</span>-&gt;{<span class="w">VisitedEdges</span>}} = <span class="s">(</span><span class="s">)</span><span class="sc">;</span>
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129 116 <span class="i">%</span>{<span class="i">$This</span>-&gt;{<span class="w">VisitedEdges</span>}-&gt;{<span class="w">From</span>}} = <span class="s">(</span><span class="s">)</span><span class="sc">;</span>
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130 117 <span class="i">%</span>{<span class="i">$This</span>-&gt;{<span class="w">VisitedEdges</span>}-&gt;{<span class="w">To</span>}} = <span class="s">(</span><span class="s">)</span><span class="sc">;</span>
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131 118
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132 119 <span class="c"># Vertex path during Path TraversalMode...</span>
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133 120 <span class="i">%</span>{<span class="i">$This</span>-&gt;{<span class="w">VerticesPaths</span>}} = <span class="s">(</span><span class="s">)</span><span class="sc">;</span>
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134 121
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135 122 <span class="c"># Allow cycles in paths during VertexNeighborhood TraversalMode. By default, cycles are not allowed</span>
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136 123 <span class="c"># during vertex traversal: a vertex is only visited once during BFS search for neighborhoods. For</span>
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137 124 <span class="c"># neighborhood vertices search during successors identification, vertex cycles are explicity allowed</span>
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138 125 <span class="c"># to indentify all successors.</span>
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139 126 <span class="i">$This</span>-&gt;{<span class="w">AllowVertexCycles</span>} = <span class="n">0</span><span class="sc">;</span>
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140 127
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141 128 <span class="c"># Allow cycles in paths during Path TraversalMode...</span>
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142 129 <span class="i">$This</span>-&gt;{<span class="w">AllowPathCycles</span>} = <span class="n">1</span><span class="sc">;</span>
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143 130
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144 131 <span class="c"># Cycle closure vertices during Path TraversalMode...</span>
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145 132 <span class="i">%</span>{<span class="i">$This</span>-&gt;{<span class="w">CycleClosureVertices</span>}} = <span class="s">(</span><span class="s">)</span><span class="sc">;</span>
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146 133
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147 134 <span class="c"># Paths traversed during search...</span>
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148 135 <span class="i">@</span>{<span class="i">$This</span>-&gt;{<span class="w">Paths</span>}} = <span class="s">(</span><span class="s">)</span><span class="sc">;</span>
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149 136
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150 137 <span class="k">return</span> <span class="i">$This</span><span class="sc">;</span>
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151 138 <span class="s">}</span>
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152 139
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153 140 <span class="c"># Initialize class ...</span>
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154 <a name="_InitializeClass-"></a> 141 <span class="k">sub </span><span class="m">_InitializeClass</span> <span class="s">{</span>
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155 142 <span class="c">#Class name...</span>
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156 143 <span class="i">$ClassName</span> = <span class="w">__PACKAGE__</span><span class="sc">;</span>
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157 144 <span class="s">}</span>
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158 145
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159 146 <span class="c"># Perform a depth first search (DFS)...</span>
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160 147 <span class="c">#</span>
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161 <a name="PerformDepthFirstSearch-"></a> 148 <span class="k">sub </span><span class="m">PerformDepthFirstSearch</span> <span class="s">{</span>
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162 149 <span class="k">my</span><span class="s">(</span><span class="i">$This</span><span class="cm">,</span> <span class="i">$RootVertexID</span><span class="s">)</span> = <span class="i">@_</span><span class="sc">;</span>
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163 150
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164 151 <span class="k">if</span> <span class="s">(</span><span class="k">defined</span> <span class="i">$RootVertexID</span><span class="s">)</span> <span class="s">{</span>
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165 152 <span class="k">if</span> <span class="s">(</span>!<span class="i">$This</span>-&gt;{<span class="w">Graph</span>}<span class="i">-&gt;HasVertex</span><span class="s">(</span><span class="i">$RootVertexID</span><span class="s">)</span><span class="s">)</span> <span class="s">{</span>
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166 153 <span class="w">carp</span> <span class="q">&quot;Warning: ${ClassName}-&gt;PerformDepthFirstSearch: No search performed: Vertex $RootVertexID doesn&#39;t exist...&quot;</span><span class="sc">;</span>
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167 154 <span class="k">return</span> <span class="k">undef</span><span class="sc">;</span>
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168 155 <span class="s">}</span>
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169 156 <span class="s">}</span>
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170 157 <span class="k">return</span> <span class="i">$This</span><span class="i">-&gt;_PerformVertexSearch</span><span class="s">(</span><span class="q">&quot;DFS&quot;</span><span class="cm">,</span> <span class="i">$RootVertexID</span><span class="s">)</span><span class="sc">;</span>
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171 158 <span class="s">}</span>
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172 159
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173 160 <span class="c"># Perform a depth first search (DFS) with limit on depth...</span>
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174 161 <span class="c">#</span>
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175 <a name="PerformDepthFirstSearchWithLimit-"></a> 162 <span class="k">sub </span><span class="m">PerformDepthFirstSearchWithLimit</span> <span class="s">{</span>
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176 163 <span class="k">my</span><span class="s">(</span><span class="i">$This</span><span class="cm">,</span> <span class="i">$DepthLimit</span><span class="cm">,</span> <span class="i">$RootVertexID</span><span class="s">)</span> = <span class="i">@_</span><span class="sc">;</span>
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177 164
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178 165 <span class="k">if</span> <span class="s">(</span>!<span class="k">defined</span> <span class="i">$DepthLimit</span><span class="s">)</span> <span class="s">{</span>
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179 166 <span class="w">carp</span> <span class="q">&quot;Warning: ${ClassName}-&gt;PerformDepthFirstSearchWithLimit: No search performed: Depth limit must be specified...&quot;</span><span class="sc">;</span>
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180 167 <span class="k">return</span> <span class="k">undef</span><span class="sc">;</span>
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181 168 <span class="s">}</span>
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182 169 <span class="k">if</span> <span class="s">(</span><span class="i">$DepthLimit</span> &lt; <span class="n">0</span><span class="s">)</span> <span class="s">{</span>
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183 170 <span class="w">carp</span> <span class="q">&quot;Warning: ${ClassName}-&gt;PerformDepthFirstSearchWithLimit: No search performed: Specified depth limit, $DepthLimit, must be a positive integer...&quot;</span><span class="sc">;</span>
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184 171 <span class="k">return</span> <span class="k">undef</span><span class="sc">;</span>
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185 172 <span class="s">}</span>
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186 173 <span class="k">if</span> <span class="s">(</span><span class="k">defined</span> <span class="i">$RootVertexID</span><span class="s">)</span> <span class="s">{</span>
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187 174 <span class="k">if</span> <span class="s">(</span>!<span class="i">$This</span>-&gt;{<span class="w">Graph</span>}<span class="i">-&gt;HasVertex</span><span class="s">(</span><span class="i">$RootVertexID</span><span class="s">)</span><span class="s">)</span> <span class="s">{</span>
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188 175 <span class="w">carp</span> <span class="q">&quot;Warning: ${ClassName}-&gt;PerformDepthFirstSearchWithLimit: No search performed: Vertex $RootVertexID doesn&#39;t exist...&quot;</span><span class="sc">;</span>
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189 176 <span class="k">return</span> <span class="k">undef</span><span class="sc">;</span>
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190 177 <span class="s">}</span>
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191 178 <span class="s">}</span>
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192 179 <span class="k">return</span> <span class="i">$This</span><span class="i">-&gt;_PerformVertexSearch</span><span class="s">(</span><span class="q">&quot;DFSWithLimit&quot;</span><span class="cm">,</span> <span class="i">$RootVertexID</span><span class="cm">,</span> <span class="i">$DepthLimit</span><span class="s">)</span><span class="sc">;</span>
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193 180 <span class="s">}</span>
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194 181
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195 182 <span class="c"># Perform a breadth first search (BFS)...</span>
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196 183 <span class="c">#</span>
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197 <a name="PerformBreadthFirstSearch-"></a> 184 <span class="k">sub </span><span class="m">PerformBreadthFirstSearch</span> <span class="s">{</span>
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198 185 <span class="k">my</span><span class="s">(</span><span class="i">$This</span><span class="cm">,</span> <span class="i">$RootVertexID</span><span class="s">)</span> = <span class="i">@_</span><span class="sc">;</span>
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199 186
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200 187 <span class="k">if</span> <span class="s">(</span><span class="k">defined</span> <span class="i">$RootVertexID</span><span class="s">)</span> <span class="s">{</span>
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201 188 <span class="k">if</span> <span class="s">(</span>!<span class="i">$This</span>-&gt;{<span class="w">Graph</span>}<span class="i">-&gt;HasVertex</span><span class="s">(</span><span class="i">$RootVertexID</span><span class="s">)</span><span class="s">)</span> <span class="s">{</span>
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202 189 <span class="w">carp</span> <span class="q">&quot;Warning: ${ClassName}-&gt;PerformBreadthFirstSearch: No search performed: Vertex $RootVertexID doesn&#39;t exist...&quot;</span><span class="sc">;</span>
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203 190 <span class="k">return</span> <span class="k">undef</span><span class="sc">;</span>
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204 191 <span class="s">}</span>
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205 192 <span class="s">}</span>
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206 193 <span class="k">return</span> <span class="i">$This</span><span class="i">-&gt;_PerformVertexSearch</span><span class="s">(</span><span class="q">&quot;BFS&quot;</span><span class="cm">,</span> <span class="i">$RootVertexID</span><span class="s">)</span><span class="sc">;</span>
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207 194 <span class="s">}</span>
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208 195
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209 196 <span class="c"># Perform a breadth first search (BFS) with limit...</span>
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210 197 <span class="c">#</span>
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211 <a name="PerformBreadthFirstSearchWithLimit-"></a> 198 <span class="k">sub </span><span class="m">PerformBreadthFirstSearchWithLimit</span> <span class="s">{</span>
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212 199 <span class="k">my</span><span class="s">(</span><span class="i">$This</span><span class="cm">,</span> <span class="i">$DepthLimit</span><span class="cm">,</span> <span class="i">$RootVertexID</span><span class="s">)</span> = <span class="i">@_</span><span class="sc">;</span>
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213 200
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214 201 <span class="k">if</span> <span class="s">(</span>!<span class="k">defined</span> <span class="i">$DepthLimit</span><span class="s">)</span> <span class="s">{</span>
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215 202 <span class="w">carp</span> <span class="q">&quot;Warning: ${ClassName}-&gt;PerformBreadthFirstSearchWithLimit: No search performed: Depth limit must be specified...&quot;</span><span class="sc">;</span>
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216 203 <span class="k">return</span> <span class="k">undef</span><span class="sc">;</span>
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217 204 <span class="s">}</span>
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218 205 <span class="k">if</span> <span class="s">(</span><span class="i">$DepthLimit</span> &lt; <span class="n">0</span><span class="s">)</span> <span class="s">{</span>
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219 206 <span class="w">carp</span> <span class="q">&quot;Warning: ${ClassName}-&gt;PerformBreadthFirstSearchWithLimit: No search performed: Specified depth limit, $DepthLimit, must be a positive integer...&quot;</span><span class="sc">;</span>
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220 207 <span class="k">return</span> <span class="k">undef</span><span class="sc">;</span>
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221 208 <span class="s">}</span>
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222 209 <span class="k">if</span> <span class="s">(</span><span class="k">defined</span> <span class="i">$RootVertexID</span><span class="s">)</span> <span class="s">{</span>
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223 210 <span class="k">if</span> <span class="s">(</span>!<span class="i">$This</span>-&gt;{<span class="w">Graph</span>}<span class="i">-&gt;HasVertex</span><span class="s">(</span><span class="i">$RootVertexID</span><span class="s">)</span><span class="s">)</span> <span class="s">{</span>
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224 211 <span class="w">carp</span> <span class="q">&quot;Warning: ${ClassName}-&gt;PerformDepthFirstSearchWithLimit: No search performed: Vertex $RootVertexID doesn&#39;t exist...&quot;</span><span class="sc">;</span>
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225 212 <span class="k">return</span> <span class="k">undef</span><span class="sc">;</span>
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226 213 <span class="s">}</span>
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227 214 <span class="s">}</span>
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228 215 <span class="k">return</span> <span class="i">$This</span><span class="i">-&gt;_PerformVertexSearch</span><span class="s">(</span><span class="q">&quot;BFSWithLimit&quot;</span><span class="cm">,</span> <span class="i">$RootVertexID</span><span class="cm">,</span> <span class="i">$DepthLimit</span><span class="s">)</span><span class="sc">;</span>
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229 216 <span class="s">}</span>
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230 217
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231 218 <span class="c"># Perform appropriate vertex search...</span>
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232 219 <span class="c">#</span>
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233 <a name="_PerformVertexSearch-"></a> 220 <span class="k">sub </span><span class="m">_PerformVertexSearch</span> <span class="s">{</span>
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234 221 <span class="k">my</span><span class="s">(</span><span class="i">$This</span><span class="cm">,</span> <span class="i">$SearchType</span><span class="cm">,</span> <span class="i">$RootVertexID</span><span class="cm">,</span> <span class="i">$DepthLimit</span><span class="cm">,</span> <span class="i">$TargetVertexID</span><span class="s">)</span> = <span class="i">@_</span><span class="sc">;</span>
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235 222
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236 223 <span class="c"># Setup search...</span>
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237 224 <span class="i">$This</span>-&gt;{<span class="w">TraversalMode</span>} = <span class="q">&#39;Vertex&#39;</span><span class="sc">;</span>
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238 225 <span class="i">$This</span>-&gt;{<span class="w">TraversalType</span>} = <span class="i">$SearchType</span><span class="sc">;</span>
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239 226
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240 227 <span class="k">if</span> <span class="s">(</span><span class="k">defined</span> <span class="i">$RootVertexID</span><span class="s">)</span> <span class="s">{</span>
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241 228 <span class="i">$This</span>-&gt;{<span class="w">RootVertex</span>} = <span class="i">$RootVertexID</span><span class="sc">;</span>
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242 229 <span class="s">}</span>
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243 230 <span class="k">if</span> <span class="s">(</span><span class="k">defined</span> <span class="i">$DepthLimit</span><span class="s">)</span> <span class="s">{</span>
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244 231 <span class="i">$This</span>-&gt;{<span class="w">DepthLimit</span>} = <span class="i">$DepthLimit</span><span class="sc">;</span>
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245 232 <span class="s">}</span>
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246 233 <span class="k">if</span> <span class="s">(</span><span class="k">defined</span> <span class="i">$TargetVertexID</span><span class="s">)</span> <span class="s">{</span>
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247 234 <span class="i">$This</span>-&gt;{<span class="w">TargetVertex</span>} = <span class="i">$TargetVertexID</span><span class="sc">;</span>
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248 235 <span class="s">}</span>
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249 236
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250 237 <span class="c"># Perform search...</span>
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251 238 <span class="k">return</span> <span class="i">$This</span><span class="i">-&gt;_TraverseGraph</span><span class="s">(</span><span class="s">)</span><span class="sc">;</span>
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252 239 <span class="s">}</span>
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253 240
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254 241 <span class="c"># Perform DFS or BFS traversal with or without any limits...</span>
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255 242 <span class="c">#</span>
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256 <a name="_TraverseGraph-"></a> 243 <span class="k">sub </span><span class="m">_TraverseGraph</span> <span class="s">{</span>
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257 244 <span class="k">my</span><span class="s">(</span><span class="i">$This</span><span class="s">)</span> = <span class="i">@_</span><span class="sc">;</span>
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258 245 <span class="k">my</span><span class="s">(</span><span class="i">$ProcessingVertices</span><span class="cm">,</span> <span class="i">$CurrentVertexID</span><span class="cm">,</span> <span class="i">$NeighborVertexID</span><span class="cm">,</span> <span class="i">$VertexID</span><span class="s">)</span><span class="sc">;</span>
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259 246
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260 247 <span class="k">if</span> <span class="s">(</span><span class="i">$This</span>-&gt;{<span class="w">TraversalMode</span>} !~ <span class="q">/^(Vertex|Path|VertexNeighborhood)$/i</span><span class="s">)</span> <span class="s">{</span>
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261 248 <span class="k">return</span> <span class="i">$This</span><span class="sc">;</span>
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262 249 <span class="s">}</span>
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263 250
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264 251 <span class="i">$ProcessingVertices</span> = <span class="n">1</span><span class="sc">;</span>
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265 252
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266 253 <span class="j">VERTICES:</span> <span class="k">while</span> <span class="s">(</span><span class="i">$ProcessingVertices</span><span class="s">)</span> <span class="s">{</span>
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267 254 <span class="c"># Set root vertex...</span>
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268 255 <span class="k">if</span> <span class="s">(</span>!<span class="i">@</span>{<span class="i">$This</span>-&gt;{<span class="w">ActiveVertices</span>}}<span class="s">)</span> <span class="s">{</span>
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269 256 <span class="k">my</span><span class="s">(</span><span class="i">$RootVertexID</span><span class="s">)</span><span class="sc">;</span>
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270 257
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271 258 <span class="i">$RootVertexID</span> = <span class="i">$This</span><span class="i">-&gt;_GetRootVertex</span><span class="s">(</span><span class="s">)</span><span class="sc">;</span>
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272 259 <span class="k">if</span> <span class="s">(</span>!<span class="k">defined</span> <span class="i">$RootVertexID</span><span class="s">)</span> <span class="s">{</span>
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273 260 <span class="i">$ProcessingVertices</span> = <span class="n">0</span><span class="sc">;</span> <span class="k">next</span> <span class="j">VERTICES</span><span class="sc">;</span>
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274 261 <span class="s">}</span>
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275 262 <span class="i">$This</span><span class="i">-&gt;_ProcessVisitedVertex</span><span class="s">(</span><span class="i">$RootVertexID</span><span class="cm">,</span> <span class="i">$RootVertexID</span><span class="s">)</span><span class="sc">;</span>
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276 263 <span class="s">}</span>
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277 264
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278 265 <span class="c"># Get current active vertex...</span>
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279 266 <span class="i">$CurrentVertexID</span> = <span class="i">$This</span><span class="i">-&gt;_GetActiveVertex</span><span class="s">(</span><span class="s">)</span><span class="sc">;</span>
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280 267 <span class="k">if</span> <span class="s">(</span>!<span class="k">defined</span> <span class="i">$CurrentVertexID</span><span class="s">)</span> <span class="s">{</span>
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281 268 <span class="i">$ProcessingVertices</span> = <span class="n">0</span><span class="sc">;</span> <span class="k">next</span> <span class="j">VERTICES</span><span class="sc">;</span>
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282 269 <span class="s">}</span>
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283 270
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284 271 <span class="c"># Get next available neighbor of current vertex...</span>
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285 272 <span class="c">#</span>
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286 273 <span class="i">$NeighborVertexID</span> = <span class="i">$This</span><span class="i">-&gt;_GetNeighborVertex</span><span class="s">(</span><span class="i">$CurrentVertexID</span><span class="s">)</span><span class="sc">;</span>
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287 274
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288 275 <span class="c"># Process neighbor or current vertex...</span>
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289 276 <span class="k">if</span> <span class="s">(</span><span class="k">defined</span> <span class="i">$NeighborVertexID</span><span class="s">)</span> <span class="s">{</span>
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290 277 <span class="i">$This</span><span class="i">-&gt;_ProcessVisitedVertex</span><span class="s">(</span><span class="i">$NeighborVertexID</span><span class="cm">,</span> <span class="i">$CurrentVertexID</span><span class="s">)</span><span class="sc">;</span>
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291 278 <span class="s">}</span>
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292 279 <span class="k">else</span> <span class="s">{</span>
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293 280 <span class="c"># Finished with all neighbors for current vertex...</span>
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294 281 <span class="i">$This</span><span class="i">-&gt;_ProcessFinishedVertex</span><span class="s">(</span><span class="i">$CurrentVertexID</span><span class="s">)</span><span class="sc">;</span>
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295 282 <span class="s">}</span>
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296 283 <span class="s">}</span>
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297 284 <span class="k">return</span> <span class="i">$This</span><span class="sc">;</span>
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298 285 <span class="s">}</span>
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299 286
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300 287 <span class="c"># Get root vertex to start the search...</span>
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301 288 <span class="c">#</span>
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302 289 <span class="c"># Notes:</span>
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303 290 <span class="c"># . User specification of root vertex forces traversal in a specific connected component</span>
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304 291 <span class="c"># of graph; To traverse find all connected components, perform traversal without specification of</span>
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305 292 <span class="c"># a root vertex.</span>
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306 293 <span class="c">#</span>
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307 <a name="_GetRootVertex-"></a> 294 <span class="k">sub </span><span class="m">_GetRootVertex</span> <span class="s">{</span>
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308 295 <span class="k">my</span><span class="s">(</span><span class="i">$This</span><span class="s">)</span> = <span class="i">@_</span><span class="sc">;</span>
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309 296 <span class="k">my</span><span class="s">(</span><span class="i">$RootVertexID</span><span class="s">)</span><span class="sc">;</span>
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310 297
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311 298 <span class="c"># Check for specified root vertex and constrain traversal to specific connected</span>
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312 299 <span class="c"># component by setting root limit...</span>
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313 300 <span class="k">if</span> <span class="s">(</span><span class="k">exists</span> <span class="i">$This</span>-&gt;{<span class="w">RootVertex</span>}<span class="s">)</span> <span class="s">{</span>
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314 301 <span class="i">$RootVertexID</span> = <span class="i">$This</span>-&gt;{<span class="w">RootVertex</span>}<span class="sc">;</span>
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315 302 <span class="k">delete</span> <span class="i">$This</span>-&gt;{<span class="w">RootVertex</span>}<span class="sc">;</span>
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316 303 <span class="i">$This</span>-&gt;{<span class="w">RootVertexSpecified</span>} = <span class="n">1</span><span class="sc">;</span>
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317 304
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318 305 <span class="k">return</span> <span class="i">$RootVertexID</span><span class="sc">;</span>
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319 306 <span class="s">}</span>
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320 307 <span class="c"># Traversal limited to connected component containing specified root vertex...</span>
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321 308 <span class="k">if</span> <span class="s">(</span><span class="k">exists</span> <span class="i">$This</span>-&gt;{<span class="w">RootVertexSpecified</span>}<span class="s">)</span> <span class="s">{</span>
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322 309 <span class="k">return</span> <span class="k">undef</span><span class="sc">;</span>
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323 310 <span class="s">}</span>
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324 311
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325 312 <span class="c"># Use first vertex in sorted available vertices list to get root vertex. Vertex</span>
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326 313 <span class="c"># with largest degree could also be used as root vertex. However, for all</span>
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327 314 <span class="c"># practical purposes, any arbitrary vertex can be used as root vertex to</span>
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328 315 <span class="c"># start search for another disconnected component of the graph.</span>
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329 316 <span class="c">#</span>
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330 317 <span class="k">my</span><span class="s">(</span><span class="i">@VerticesToVisit</span><span class="s">)</span><span class="sc">;</span>
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331 318
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332 319 <span class="i">$RootVertexID</span> = <span class="k">undef</span><span class="sc">;</span> <span class="i">@VerticesToVisit</span> = <span class="s">(</span><span class="s">)</span><span class="sc">;</span>
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333 320 <span class="i">@VerticesToVisit</span> = <span class="k">sort</span> <span class="s">{</span> <span class="i">$a</span> &lt;=&gt; <span class="i">$b</span> <span class="s">}</span> <span class="k">keys</span> <span class="i">%</span>{<span class="i">$This</span>-&gt;{<span class="w">VerticesToVisit</span>}}<span class="sc">;</span>
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334 321 <span class="k">if</span> <span class="s">(</span><span class="i">@VerticesToVisit</span><span class="s">)</span> <span class="s">{</span>
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335 322 <span class="i">$RootVertexID</span> = <span class="i">$VerticesToVisit</span>[<span class="n">0</span>]<span class="sc">;</span>
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336 323 <span class="s">}</span>
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337 324 <span class="k">return</span> <span class="i">$RootVertexID</span><span class="sc">;</span>
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338 325 <span class="s">}</span>
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339 326
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340 327 <span class="c"># Get current or new active vertex for DFS/BFS traversals...</span>
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341 328 <span class="c">#</span>
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342 <a name="_GetActiveVertex-"></a> 329 <span class="k">sub </span><span class="m">_GetActiveVertex</span> <span class="s">{</span>
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343 330 <span class="k">my</span><span class="s">(</span><span class="i">$This</span><span class="s">)</span> = <span class="i">@_</span><span class="sc">;</span>
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344 331 <span class="k">my</span><span class="s">(</span><span class="i">$ActiveVertexID</span><span class="s">)</span><span class="sc">;</span>
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345 332
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346 333 <span class="i">$ActiveVertexID</span> = <span class="k">undef</span><span class="sc">;</span>
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347 334 <span class="k">if</span> <span class="s">(</span><span class="i">$This</span>-&gt;{<span class="w">TraversalType</span>} =~ <span class="q">/^(DFS|DFSWithLimit)$/i</span><span class="s">)</span> <span class="s">{</span>
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348 335 <span class="c"># For DFS, it&#39;s last vertex in LIFO queue...</span>
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349 336 <span class="i">$ActiveVertexID</span> = <span class="i">$This</span>-&gt;{<span class="w">ActiveVertices</span>}[<span class="n">-1</span>]<span class="sc">;</span>
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350 337 <span class="s">}</span>
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351 338 <span class="k">elsif</span> <span class="s">(</span><span class="i">$This</span>-&gt;{<span class="w">TraversalType</span>} =~ <span class="q">/^(BFS|BFSWithLimit)$/i</span><span class="s">)</span> <span class="s">{</span>
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352 339 <span class="c"># For BFS, it&#39;s first vertex in FIFO queue...</span>
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353 340 <span class="i">$ActiveVertexID</span> = <span class="i">$This</span>-&gt;{<span class="w">ActiveVertices</span>}[<span class="n">0</span>]<span class="sc">;</span>
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354 341 <span class="s">}</span>
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355 342 <span class="k">return</span> <span class="i">$ActiveVertexID</span><span class="sc">;</span>
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356 343 <span class="s">}</span>
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357 344
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358 345 <span class="c"># Get available neigbor of specified vertex...</span>
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359 346 <span class="c">#</span>
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360 <a name="_GetNeighborVertex-"></a> 347 <span class="k">sub </span><span class="m">_GetNeighborVertex</span> <span class="s">{</span>
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361 348 <span class="k">my</span><span class="s">(</span><span class="i">$This</span><span class="cm">,</span> <span class="i">$VertexID</span><span class="s">)</span> = <span class="i">@_</span><span class="sc">;</span>
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362 349
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363 350 <span class="c"># Retrieve neighbors for vertex...</span>
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364 351 <span class="k">if</span> <span class="s">(</span>!<span class="k">exists</span> <span class="i">$This</span>-&gt;{<span class="w">VerticesNeighbors</span>}{<span class="i">$VertexID</span>}<span class="s">)</span> <span class="s">{</span>
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365 352 <span class="i">@</span>{<span class="i">$This</span>-&gt;{<span class="w">VerticesNeighbors</span>}{<span class="i">$VertexID</span>}} = <span class="s">(</span><span class="s">)</span><span class="sc">;</span>
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366 353
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367 354 <span class="k">if</span> <span class="s">(</span><span class="k">exists</span> <span class="i">$This</span>-&gt;{<span class="w">DepthLimit</span>}<span class="s">)</span> <span class="s">{</span>
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368 355 <span class="c"># Only collect neighbors to visit below specified depth limit...</span>
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369 356 <span class="k">if</span> <span class="s">(</span><span class="i">$This</span>-&gt;{<span class="w">VerticesDepth</span>}{<span class="i">$VertexID</span>} &lt; <span class="i">$This</span>-&gt;{<span class="w">DepthLimit</span>}<span class="s">)</span> <span class="s">{</span>
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370 357 <span class="k">push</span> <span class="i">@</span>{<span class="i">$This</span>-&gt;{<span class="w">VerticesNeighbors</span>}{<span class="i">$VertexID</span>}}<span class="cm">,</span> <span class="i">$This</span>-&gt;{<span class="w">Graph</span>}<span class="i">-&gt;GetNeighbors</span><span class="s">(</span><span class="i">$VertexID</span><span class="s">)</span><span class="sc">;</span>
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371 358 <span class="s">}</span>
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372 359 <span class="k">else</span> <span class="s">{</span>
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373 360 <span class="k">if</span> <span class="s">(</span>!<span class="k">exists</span> <span class="i">$This</span>-&gt;{<span class="w">RootVertexSpecified</span>}<span class="s">)</span> <span class="s">{</span>
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374 361 <span class="c"># Mark all other downstream neighbor vertices to be ignored from any further</span>
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375 362 <span class="c"># processing and avoid selection of a new root...</span>
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376 363 <span class="i">$This</span><span class="i">-&gt;_IgnoreDownstreamNeighbors</span><span class="s">(</span><span class="i">$VertexID</span><span class="s">)</span><span class="sc">;</span>
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377 364 <span class="s">}</span>
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378 365 <span class="s">}</span>
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379 366 <span class="s">}</span>
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380 367 <span class="k">elsif</span> <span class="s">(</span><span class="k">exists</span> <span class="i">$This</span>-&gt;{<span class="w">TargetVertex</span>}<span class="s">)</span> <span class="s">{</span>
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381 368 <span class="k">if</span> <span class="s">(</span><span class="i">$VertexID</span> != <span class="i">$This</span>-&gt;{<span class="w">TargetVertex</span>}<span class="s">)</span> <span class="s">{</span>
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382 369 <span class="k">push</span> <span class="i">@</span>{<span class="i">$This</span>-&gt;{<span class="w">VerticesNeighbors</span>}{<span class="i">$VertexID</span>}}<span class="cm">,</span> <span class="i">$This</span>-&gt;{<span class="w">Graph</span>}<span class="i">-&gt;GetNeighbors</span><span class="s">(</span><span class="i">$VertexID</span><span class="s">)</span><span class="sc">;</span>
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383 370 <span class="s">}</span>
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384 371 <span class="s">}</span>
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385 372 <span class="k">else</span> <span class="s">{</span>
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386 373 <span class="k">push</span> <span class="i">@</span>{<span class="i">$This</span>-&gt;{<span class="w">VerticesNeighbors</span>}{<span class="i">$VertexID</span>}}<span class="cm">,</span> <span class="i">$This</span>-&gt;{<span class="w">Graph</span>}<span class="i">-&gt;GetNeighbors</span><span class="s">(</span><span class="i">$VertexID</span><span class="s">)</span><span class="sc">;</span>
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387 374 <span class="s">}</span>
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388 375 <span class="s">}</span>
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389 376
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390 377 <span class="k">if</span> <span class="s">(</span><span class="i">$This</span>-&gt;{<span class="w">TraversalMode</span>} =~ <span class="q">/^Path$/i</span><span class="s">)</span> <span class="s">{</span>
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391 378 <span class="c"># Get available neighbor for path search...</span>
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392 379 <span class="k">return</span> <span class="i">$This</span><span class="i">-&gt;_GetNeighborVertexDuringPathTraversal</span><span class="s">(</span><span class="i">$VertexID</span><span class="s">)</span><span class="sc">;</span>
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393 380 <span class="s">}</span>
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394 381 <span class="k">elsif</span> <span class="s">(</span><span class="i">$This</span>-&gt;{<span class="w">TraversalMode</span>} =~ <span class="q">/^Vertex$/i</span><span class="s">)</span> <span class="s">{</span>
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395 382 <span class="c"># Get unvisited neighbor for vertex search...</span>
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396 383 <span class="k">return</span> <span class="i">$This</span><span class="i">-&gt;_GetNeighborVertexDuringVertexTraversal</span><span class="s">(</span><span class="i">$VertexID</span><span class="s">)</span><span class="sc">;</span>
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397 384 <span class="s">}</span>
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398 385 <span class="k">elsif</span> <span class="s">(</span><span class="i">$This</span>-&gt;{<span class="w">TraversalMode</span>} =~ <span class="q">/^VertexNeighborhood$/i</span><span class="s">)</span> <span class="s">{</span>
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399 386 <span class="c"># Get available neighbor during vertex neighborhood search...</span>
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400 387 <span class="k">return</span> <span class="i">$This</span><span class="i">-&gt;_GetNeighborVertexDuringVertexNeighborhoodTraversal</span><span class="s">(</span><span class="i">$VertexID</span><span class="s">)</span><span class="sc">;</span>
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401 388 <span class="s">}</span>
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402 389 <span class="k">return</span> <span class="k">undef</span><span class="sc">;</span>
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403 390 <span class="s">}</span>
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404 391
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405 392 <span class="c"># Get unvisited neighbor of specified vertex during vertex traversal...</span>
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406 393 <span class="c">#</span>
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407 <a name="_GetNeighborVertexDuringVertexTraversal-"></a> 394 <span class="k">sub </span><span class="m">_GetNeighborVertexDuringVertexTraversal</span> <span class="s">{</span>
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408 395 <span class="k">my</span><span class="s">(</span><span class="i">$This</span><span class="cm">,</span> <span class="i">$VertexID</span><span class="s">)</span> = <span class="i">@_</span><span class="sc">;</span>
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409 396 <span class="k">my</span><span class="s">(</span><span class="i">$NeighborVertexID</span><span class="cm">,</span> <span class="i">$UnvisitedNeighborVertexID</span><span class="s">)</span><span class="sc">;</span>
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410 397
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411 398 <span class="c"># Get unvisited neighbor...</span>
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412 399 <span class="i">$UnvisitedNeighborVertexID</span> = <span class="k">undef</span><span class="sc">;</span>
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413 400 <span class="j">NEIGHBOR:</span> <span class="k">for</span> <span class="i">$NeighborVertexID</span> <span class="s">(</span><span class="i">@</span>{<span class="i">$This</span>-&gt;{<span class="w">VerticesNeighbors</span>}{<span class="i">$VertexID</span>}}<span class="s">)</span> <span class="s">{</span>
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414 401 <span class="k">if</span> <span class="s">(</span>!<span class="k">exists</span> <span class="i">$This</span>-&gt;{<span class="w">VisitedVertices</span>}{<span class="i">$NeighborVertexID</span>}<span class="s">)</span> <span class="s">{</span>
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415 402 <span class="i">$UnvisitedNeighborVertexID</span> = <span class="i">$NeighborVertexID</span><span class="sc">;</span>
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416 403 <span class="k">last</span> <span class="j">NEIGHBOR</span><span class="sc">;</span>
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417 404 <span class="s">}</span>
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418 405 <span class="s">}</span>
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419 406 <span class="k">return</span> <span class="i">$UnvisitedNeighborVertexID</span><span class="sc">;</span>
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420 407 <span class="s">}</span>
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421 408
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422 409 <span class="c"># Get available neighbor of specified vertex during vertex neighborhood traversal...</span>
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423 410 <span class="c">#</span>
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424 <a name="_GetNeighborVertexDuringVertexNeighborhoodTraversal-"></a> 411 <span class="k">sub </span><span class="m">_GetNeighborVertexDuringVertexNeighborhoodTraversal</span> <span class="s">{</span>
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425 412 <span class="k">my</span><span class="s">(</span><span class="i">$This</span><span class="cm">,</span> <span class="i">$VertexID</span><span class="s">)</span> = <span class="i">@_</span><span class="sc">;</span>
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426 413 <span class="k">my</span><span class="s">(</span><span class="i">$NeighborVertexID</span><span class="cm">,</span> <span class="i">$UnvisitedNeighborVertexID</span><span class="s">)</span><span class="sc">;</span>
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427 414
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428 415 <span class="c"># Get available neighbor...</span>
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429 416 <span class="i">$UnvisitedNeighborVertexID</span> = <span class="k">undef</span><span class="sc">;</span>
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430 417 <span class="j">NEIGHBOR:</span> <span class="k">for</span> <span class="i">$NeighborVertexID</span> <span class="s">(</span><span class="i">@</span>{<span class="i">$This</span>-&gt;{<span class="w">VerticesNeighbors</span>}{<span class="i">$VertexID</span>}}<span class="s">)</span> <span class="s">{</span>
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431 418 <span class="k">if</span> <span class="s">(</span>!<span class="k">exists</span> <span class="i">$This</span>-&gt;{<span class="w">VisitedVertices</span>}{<span class="i">$NeighborVertexID</span>}<span class="s">)</span> <span class="s">{</span>
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432 419 <span class="i">$UnvisitedNeighborVertexID</span> = <span class="i">$NeighborVertexID</span><span class="sc">;</span>
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433 420 <span class="k">last</span> <span class="j">NEIGHBOR</span><span class="sc">;</span>
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434 421 <span class="s">}</span>
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435 422 <span class="c"># Look for any unvisited edge back to visited vertex...</span>
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436 423 <span class="k">if</span> <span class="s">(</span><span class="i">$This</span><span class="i">-&gt;_IsVisitedEdge</span><span class="s">(</span><span class="i">$VertexID</span><span class="cm">,</span> <span class="i">$NeighborVertexID</span><span class="s">)</span> || <span class="i">$This</span><span class="i">-&gt;_IsVisitedEdge</span><span class="s">(</span><span class="i">$NeighborVertexID</span><span class="cm">,</span> <span class="i">$VertexID</span><span class="s">)</span><span class="s">)</span> <span class="s">{</span>
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437 424 <span class="k">next</span> <span class="j">NEIGHBOR</span><span class="sc">;</span>
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438 425 <span class="s">}</span>
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439 426 <span class="c"># Check its depth...</span>
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440 427 <span class="k">if</span> <span class="s">(</span><span class="k">exists</span> <span class="i">$This</span>-&gt;{<span class="w">DepthLimit</span>}<span class="s">)</span> <span class="s">{</span>
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441 428 <span class="k">if</span> <span class="s">(</span><span class="s">(</span><span class="i">$This</span>-&gt;{<span class="w">VerticesDepth</span>}{<span class="i">$VertexID</span>} + <span class="n">1</span><span class="s">)</span> &gt; <span class="i">$This</span>-&gt;{<span class="w">DepthLimit</span>}<span class="s">)</span> <span class="s">{</span>
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442 429 <span class="k">next</span> <span class="j">NEIGHBOR</span><span class="sc">;</span>
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443 430 <span class="s">}</span>
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444 431 <span class="s">}</span>
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445 432 <span class="c"># Its an edge that makes a cycle during BFS search...</span>
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446 433 <span class="k">if</span> <span class="s">(</span><span class="i">$This</span>-&gt;{<span class="w">AllowVertexCycles</span>}<span class="s">)</span> <span class="s">{</span>
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447 434 <span class="i">$This</span>-&gt;{<span class="w">CycleClosureVertices</span>}{<span class="i">$NeighborVertexID</span>} = <span class="n">1</span><span class="sc">;</span>
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448 435 <span class="i">$UnvisitedNeighborVertexID</span> = <span class="i">$NeighborVertexID</span><span class="sc">;</span>
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449 436 <span class="k">last</span> <span class="j">NEIGHBOR</span><span class="sc">;</span>
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450 437 <span class="s">}</span>
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451 438 <span class="s">}</span>
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452 439 <span class="k">return</span> <span class="i">$UnvisitedNeighborVertexID</span><span class="sc">;</span>
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453 440 <span class="s">}</span>
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454 441
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455 442 <span class="c"># Get available neighbor of specified vertex during path traversal...</span>
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456 443 <span class="c">#</span>
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457 <a name="_GetNeighborVertexDuringPathTraversal-"></a> 444 <span class="k">sub </span><span class="m">_GetNeighborVertexDuringPathTraversal</span> <span class="s">{</span>
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458 445 <span class="k">my</span><span class="s">(</span><span class="i">$This</span><span class="cm">,</span> <span class="i">$VertexID</span><span class="s">)</span> = <span class="i">@_</span><span class="sc">;</span>
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459 446 <span class="k">my</span><span class="s">(</span><span class="i">$NeighborVertexID</span><span class="cm">,</span> <span class="i">$UnvisitedNeighborVertexID</span><span class="s">)</span><span class="sc">;</span>
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460 447
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461 448 <span class="c"># Get unvisited neighbor...</span>
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462 449 <span class="i">$UnvisitedNeighborVertexID</span> = <span class="k">undef</span><span class="sc">;</span>
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463 450 <span class="j">NEIGHBOR:</span> <span class="k">for</span> <span class="i">$NeighborVertexID</span> <span class="s">(</span><span class="i">@</span>{<span class="i">$This</span>-&gt;{<span class="w">VerticesNeighbors</span>}{<span class="i">$VertexID</span>}}<span class="s">)</span> <span class="s">{</span>
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464 451 <span class="k">if</span> <span class="s">(</span>!<span class="k">exists</span> <span class="i">$This</span>-&gt;{<span class="w">VisitedVertices</span>}{<span class="i">$NeighborVertexID</span>}<span class="s">)</span> <span class="s">{</span>
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465 452 <span class="c"># An unvisited vertex...</span>
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466 453 <span class="i">$UnvisitedNeighborVertexID</span> = <span class="i">$NeighborVertexID</span><span class="sc">;</span>
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467 454 <span class="k">last</span> <span class="j">NEIGHBOR</span><span class="sc">;</span>
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468 455 <span class="s">}</span>
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469 456 <span class="c"># Look for any unvisited edge back to visited vertex...</span>
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470 457 <span class="k">if</span> <span class="s">(</span><span class="i">$This</span><span class="i">-&gt;_IsVisitedEdge</span><span class="s">(</span><span class="i">$VertexID</span><span class="cm">,</span> <span class="i">$NeighborVertexID</span><span class="s">)</span> || <span class="i">$This</span><span class="i">-&gt;_IsVisitedEdge</span><span class="s">(</span><span class="i">$NeighborVertexID</span><span class="cm">,</span> <span class="i">$VertexID</span><span class="s">)</span><span class="s">)</span> <span class="s">{</span>
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471 458 <span class="k">next</span> <span class="j">NEIGHBOR</span><span class="sc">;</span>
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472 459 <span class="s">}</span>
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473 460 <span class="c"># Check its depth...</span>
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474 461 <span class="k">if</span> <span class="s">(</span><span class="k">exists</span> <span class="i">$This</span>-&gt;{<span class="w">DepthLimit</span>}<span class="s">)</span> <span class="s">{</span>
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475 462 <span class="k">if</span> <span class="s">(</span><span class="s">(</span><span class="i">$This</span>-&gt;{<span class="w">VerticesDepth</span>}{<span class="i">$VertexID</span>} + <span class="n">1</span><span class="s">)</span> &gt;= <span class="i">$This</span>-&gt;{<span class="w">DepthLimit</span>}<span class="s">)</span> <span class="s">{</span>
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476 463 <span class="k">next</span> <span class="j">NEIGHBOR</span><span class="sc">;</span>
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477 464 <span class="s">}</span>
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478 465 <span class="s">}</span>
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479 466
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480 467 <span class="c"># It&#39;s the edge final edge of a cycle in case $NeighborVertexID is already in the path; otherwise, it&#39;s</span>
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481 468 <span class="c"># part of the path from a different direction in a cycle or a left over vertex during Limit search.</span>
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482 469 <span class="c">#</span>
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483 470 <span class="k">if</span> <span class="s">(</span><span class="i">$This</span><span class="i">-&gt;_IsCycleClosureEdge</span><span class="s">(</span><span class="i">$VertexID</span><span class="cm">,</span> <span class="i">$NeighborVertexID</span><span class="s">)</span><span class="s">)</span> <span class="s">{</span>
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484 471 <span class="k">if</span> <span class="s">(</span><span class="i">$This</span>-&gt;{<span class="w">AllowPathCycles</span>}<span class="s">)</span> <span class="s">{</span>
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485 472 <span class="i">$This</span>-&gt;{<span class="w">CycleClosureVertices</span>}{<span class="i">$NeighborVertexID</span>} = <span class="n">1</span><span class="sc">;</span>
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486 473 <span class="i">$UnvisitedNeighborVertexID</span> = <span class="i">$NeighborVertexID</span><span class="sc">;</span>
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487 474 <span class="k">last</span> <span class="j">NEIGHBOR</span><span class="sc">;</span>
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488 475 <span class="s">}</span>
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489 476 <span class="s">}</span>
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490 477 <span class="k">else</span> <span class="s">{</span>
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491 478 <span class="i">$UnvisitedNeighborVertexID</span> = <span class="i">$NeighborVertexID</span><span class="sc">;</span>
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492 479 <span class="k">last</span> <span class="j">NEIGHBOR</span><span class="sc">;</span>
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493 480 <span class="s">}</span>
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494 481 <span class="s">}</span>
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495 482 <span class="k">return</span> <span class="i">$UnvisitedNeighborVertexID</span><span class="sc">;</span>
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496 483 <span class="s">}</span>
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497 484
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498 485 <span class="c"># Process visited vertex...</span>
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499 486 <span class="c">#</span>
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500 <a name="_ProcessVisitedVertex-"></a> 487 <span class="k">sub </span><span class="m">_ProcessVisitedVertex</span> <span class="s">{</span>
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501 488 <span class="k">my</span><span class="s">(</span><span class="i">$This</span><span class="cm">,</span> <span class="i">$VertexID</span><span class="cm">,</span> <span class="i">$PredecessorVertexID</span><span class="s">)</span> = <span class="i">@_</span><span class="sc">;</span>
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502 489
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503 490 <span class="k">if</span> <span class="s">(</span>!<span class="k">exists</span> <span class="i">$This</span>-&gt;{<span class="w">VisitedVertices</span>}{<span class="i">$VertexID</span>}<span class="s">)</span> <span class="s">{</span>
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504 491 <span class="c"># Add it to active vertices list...</span>
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505 492 <span class="k">push</span> <span class="i">@</span>{<span class="i">$This</span>-&gt;{<span class="w">ActiveVertices</span>}}<span class="cm">,</span> <span class="i">$VertexID</span><span class="sc">;</span>
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506 493
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507 494 <span class="c"># Mark vertex as visited vertex and take it out from the list of vertices to visit...</span>
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508 495 <span class="i">$This</span>-&gt;{<span class="w">VisitedVertices</span>}{<span class="i">$VertexID</span>} = <span class="n">1</span><span class="sc">;</span>
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parents:
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509 496 <span class="k">delete</span> <span class="i">$This</span>-&gt;{<span class="w">VerticesToVisit</span>}{<span class="i">$VertexID</span>}<span class="sc">;</span>
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510 497 <span class="s">}</span>
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diff changeset
511 498
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parents:
diff changeset
512 499 <span class="c"># Set up root vertex, predecessor vertex and distance from root...</span>
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parents:
diff changeset
513 500 <span class="k">if</span> <span class="s">(</span><span class="i">$VertexID</span> == <span class="i">$PredecessorVertexID</span><span class="s">)</span> <span class="s">{</span>
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514 501 <span class="i">$This</span>-&gt;{<span class="w">VerticesRoots</span>}{<span class="i">$VertexID</span>} = <span class="i">$VertexID</span><span class="sc">;</span>
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parents:
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515 502
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516 503 <span class="i">$This</span>-&gt;{<span class="w">VerticesPredecessors</span>}{<span class="i">$VertexID</span>} = <span class="i">$VertexID</span><span class="sc">;</span>
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517 504 <span class="k">if</span> <span class="s">(</span>!<span class="k">exists</span> <span class="i">$This</span>-&gt;{<span class="w">VerticesSuccessors</span>}{<span class="i">$VertexID</span>}<span class="s">)</span> <span class="s">{</span>
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518 505 <span class="i">@</span>{<span class="i">$This</span>-&gt;{<span class="w">VerticesSuccessors</span>}{<span class="i">$VertexID</span>}} = <span class="s">(</span><span class="s">)</span><span class="sc">;</span>
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519 506 <span class="s">}</span>
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diff changeset
520 507
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parents:
diff changeset
521 508 <span class="i">$This</span>-&gt;{<span class="w">VerticesDepth</span>}{<span class="i">$VertexID</span>} = <span class="n">0</span><span class="sc">;</span>
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diff changeset
522 509
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523 510 <span class="k">if</span> <span class="s">(</span><span class="i">$This</span>-&gt;{<span class="w">TraversalMode</span>} =~ <span class="q">/^Path$/i</span><span class="s">)</span> <span class="s">{</span>
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parents:
diff changeset
524 511 <span class="i">$This</span><span class="i">-&gt;_ProcessVisitedPath</span><span class="s">(</span><span class="i">$VertexID</span><span class="cm">,</span> <span class="i">$PredecessorVertexID</span><span class="s">)</span><span class="sc">;</span>
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parents:
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525 512 <span class="s">}</span>
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parents:
diff changeset
526 513 <span class="s">}</span>
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parents:
diff changeset
527 514 <span class="k">else</span> <span class="s">{</span>
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528 515 <span class="i">$This</span>-&gt;{<span class="w">VerticesRoots</span>}{<span class="i">$VertexID</span>} = <span class="i">$This</span>-&gt;{<span class="w">VerticesRoots</span>}{<span class="i">$PredecessorVertexID</span>}<span class="sc">;</span>
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diff changeset
529 516
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530 517 <span class="i">$This</span>-&gt;{<span class="w">VerticesPredecessors</span>}{<span class="i">$VertexID</span>} = <span class="i">$PredecessorVertexID</span><span class="sc">;</span>
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531 518 <span class="k">if</span> <span class="s">(</span>!<span class="k">exists</span> <span class="i">$This</span>-&gt;{<span class="w">VerticesSuccessors</span>}{<span class="i">$PredecessorVertexID</span>}<span class="s">)</span> <span class="s">{</span>
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532 519 <span class="i">@</span>{<span class="i">$This</span>-&gt;{<span class="w">VerticesSuccessors</span>}{<span class="i">$PredecessorVertexID</span>}} = <span class="s">(</span><span class="s">)</span><span class="sc">;</span>
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533 520 <span class="s">}</span>
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parents:
diff changeset
534 521 <span class="k">push</span> <span class="i">@</span>{<span class="i">$This</span>-&gt;{<span class="w">VerticesSuccessors</span>}{<span class="i">$PredecessorVertexID</span>}}<span class="cm">,</span> <span class="i">$VertexID</span><span class="sc">;</span>
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535 522
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diff changeset
536 523 <span class="k">if</span> <span class="s">(</span>!<span class="k">exists</span> <span class="i">$This</span>-&gt;{<span class="w">VerticesDepth</span>}{<span class="i">$VertexID</span>}<span class="s">)</span> <span class="s">{</span>
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537 524 <span class="i">$This</span>-&gt;{<span class="w">VerticesDepth</span>}{<span class="i">$VertexID</span>} = <span class="i">$This</span>-&gt;{<span class="w">VerticesDepth</span>}{<span class="i">$PredecessorVertexID</span>} + <span class="n">1</span><span class="sc">;</span>
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538 525 <span class="s">}</span>
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539 526
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540 527 <span class="k">if</span> <span class="s">(</span><span class="i">$This</span>-&gt;{<span class="w">TraversalMode</span>} =~ <span class="q">/^Path$/i</span><span class="s">)</span> <span class="s">{</span>
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diff changeset
541 528 <span class="i">$This</span><span class="i">-&gt;_ProcessVisitedPath</span><span class="s">(</span><span class="i">$VertexID</span><span class="cm">,</span> <span class="i">$PredecessorVertexID</span><span class="s">)</span><span class="sc">;</span>
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parents:
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542 529 <span class="i">$This</span><span class="i">-&gt;_ProcessVisitedEdge</span><span class="s">(</span><span class="i">$PredecessorVertexID</span><span class="cm">,</span> <span class="i">$VertexID</span><span class="s">)</span><span class="sc">;</span>
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543 530 <span class="s">}</span>
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diff changeset
544 531 <span class="k">elsif</span> <span class="s">(</span><span class="i">$This</span>-&gt;{<span class="w">TraversalMode</span>} =~ <span class="q">/^VertexNeighborhood$/i</span><span class="s">)</span> <span class="s">{</span>
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545 532 <span class="i">$This</span><span class="i">-&gt;_ProcessVisitedEdge</span><span class="s">(</span><span class="i">$PredecessorVertexID</span><span class="cm">,</span> <span class="i">$VertexID</span><span class="s">)</span><span class="sc">;</span>
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546 533 <span class="s">}</span>
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diff changeset
547 534 <span class="s">}</span>
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parents:
diff changeset
548 535 <span class="k">return</span> <span class="i">$This</span><span class="sc">;</span>
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parents:
diff changeset
549 536 <span class="s">}</span>
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550 537
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parents:
diff changeset
551 538 <span class="c"># Process visited path...</span>
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parents:
diff changeset
552 539 <span class="c">#</span>
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diff changeset
553 <a name="_ProcessVisitedPath-"></a> 540 <span class="k">sub </span><span class="m">_ProcessVisitedPath</span> <span class="s">{</span>
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parents:
diff changeset
554 541 <span class="k">my</span><span class="s">(</span><span class="i">$This</span><span class="cm">,</span> <span class="i">$VertexID</span><span class="cm">,</span> <span class="i">$PredecessorVertexID</span><span class="s">)</span> = <span class="i">@_</span><span class="sc">;</span>
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555 542
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parents:
diff changeset
556 543 <span class="c"># Initialize VerticesPath...</span>
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parents:
diff changeset
557 544 <span class="k">if</span> <span class="s">(</span>!<span class="k">exists</span> <span class="i">$This</span>-&gt;{<span class="w">VerticesPaths</span>}{<span class="i">$VertexID</span>}<span class="s">)</span> <span class="s">{</span>
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parents:
diff changeset
558 545 <span class="i">@</span>{<span class="i">$This</span>-&gt;{<span class="w">VerticesPaths</span>}{<span class="i">$VertexID</span>}} = <span class="s">(</span><span class="s">)</span><span class="sc">;</span>
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diff changeset
559 546 <span class="s">}</span>
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diff changeset
560 547
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diff changeset
561 548 <span class="k">if</span> <span class="s">(</span><span class="i">$VertexID</span> == <span class="i">$PredecessorVertexID</span><span class="s">)</span> <span class="s">{</span>
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parents:
diff changeset
562 549 <span class="c"># Starting of a path from root...</span>
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parents:
diff changeset
563 550 <span class="k">push</span> <span class="i">@</span>{<span class="i">$This</span>-&gt;{<span class="w">VerticesPaths</span>}{<span class="i">$VertexID</span>}}<span class="cm">,</span> <span class="i">$VertexID</span><span class="sc">;</span>
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diff changeset
564 551 <span class="s">}</span>
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parents:
diff changeset
565 552 <span class="k">else</span> <span class="s">{</span>
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parents:
diff changeset
566 553 <span class="c"># Setup path for a vertex using path information from predecessor vertex...</span>
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parents:
diff changeset
567 554 <span class="k">if</span> <span class="s">(</span><span class="k">exists</span> <span class="i">$This</span>-&gt;{<span class="w">CycleClosureVertices</span>}{<span class="i">$PredecessorVertexID</span>}<span class="s">)</span> <span class="s">{</span>
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parents:
diff changeset
568 555 <span class="c"># Start of a new path from predecessor vertex...</span>
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parents:
diff changeset
569 556 <span class="k">push</span> <span class="i">@</span>{<span class="i">$This</span>-&gt;{<span class="w">VerticesPaths</span>}{<span class="i">$VertexID</span>}}<span class="cm">,</span> <span class="q">&quot;${PredecessorVertexID}-${VertexID}&quot;</span><span class="sc">;</span>
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diff changeset
570 557 <span class="s">}</span>
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diff changeset
571 558 <span class="k">else</span> <span class="s">{</span>
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572 559 <span class="k">my</span><span class="s">(</span><span class="i">$PredecessorVertexPath</span><span class="s">)</span><span class="sc">;</span>
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573 560 <span class="k">for</span> <span class="i">$PredecessorVertexPath</span> <span class="s">(</span><span class="i">@</span>{<span class="i">$This</span>-&gt;{<span class="w">VerticesPaths</span>}{<span class="i">$PredecessorVertexID</span>}}<span class="s">)</span> <span class="s">{</span>
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parents:
diff changeset
574 561 <span class="k">push</span> <span class="i">@</span>{<span class="i">$This</span>-&gt;{<span class="w">VerticesPaths</span>}{<span class="i">$VertexID</span>}}<span class="cm">,</span> <span class="q">&quot;${PredecessorVertexPath}-${VertexID}&quot;</span><span class="sc">;</span>
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parents:
diff changeset
575 562 <span class="s">}</span>
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diff changeset
576 563 <span class="s">}</span>
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diff changeset
577 564 <span class="s">}</span>
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578 565 <span class="k">return</span> <span class="i">$This</span><span class="sc">;</span>
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parents:
diff changeset
579 566 <span class="s">}</span>
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580 567
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581 568 <span class="c"># Process visited edge...</span>
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diff changeset
582 569 <span class="c">#</span>
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diff changeset
583 <a name="_ProcessVisitedEdge-"></a> 570 <span class="k">sub </span><span class="m">_ProcessVisitedEdge</span> <span class="s">{</span>
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584 571 <span class="k">my</span><span class="s">(</span><span class="i">$This</span><span class="cm">,</span> <span class="i">$VertexID1</span><span class="cm">,</span> <span class="i">$VertexID2</span><span class="s">)</span> = <span class="i">@_</span><span class="sc">;</span>
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585 572
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586 573 <span class="k">if</span> <span class="s">(</span>!<span class="k">exists</span> <span class="i">$This</span>-&gt;{<span class="w">VisitedEdges</span>}-&gt;{<span class="w">From</span>}-&gt;{<span class="i">$VertexID1</span>}<span class="s">)</span> <span class="s">{</span>
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587 574 <span class="i">%</span>{<span class="i">$This</span>-&gt;{<span class="w">VisitedEdges</span>}-&gt;{<span class="w">From</span>}-&gt;{<span class="i">$VertexID1</span>}} = <span class="s">(</span><span class="s">)</span><span class="sc">;</span>
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diff changeset
588 575 <span class="s">}</span>
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diff changeset
589 576 <span class="i">$This</span>-&gt;{<span class="w">VisitedEdges</span>}-&gt;{<span class="w">From</span>}-&gt;{<span class="i">$VertexID1</span>}-&gt;{<span class="i">$VertexID2</span>} = <span class="i">$VertexID2</span><span class="sc">;</span>
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diff changeset
590 577
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diff changeset
591 578 <span class="k">if</span> <span class="s">(</span>!<span class="k">exists</span> <span class="i">$This</span>-&gt;{<span class="w">VisitedEdges</span>}-&gt;{<span class="w">To</span>}-&gt;{<span class="i">$VertexID2</span>}<span class="s">)</span> <span class="s">{</span>
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parents:
diff changeset
592 579 <span class="i">%</span>{<span class="i">$This</span>-&gt;{<span class="w">VisitedEdges</span>}-&gt;{<span class="w">To</span>}-&gt;{<span class="i">$VertexID2</span>}} = <span class="s">(</span><span class="s">)</span><span class="sc">;</span>
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diff changeset
593 580 <span class="s">}</span>
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diff changeset
594 581 <span class="i">$This</span>-&gt;{<span class="w">VisitedEdges</span>}-&gt;{<span class="w">To</span>}-&gt;{<span class="i">$VertexID2</span>}-&gt;{<span class="i">$VertexID1</span>} = <span class="i">$VertexID1</span><span class="sc">;</span>
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parents:
diff changeset
595 582
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diff changeset
596 583 <span class="k">return</span> <span class="i">$This</span><span class="sc">;</span>
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parents:
diff changeset
597 584 <span class="s">}</span>
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598 585
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parents:
diff changeset
599 586 <span class="c"># Finished processing active vertex...</span>
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diff changeset
600 587 <span class="c">#</span>
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diff changeset
601 <a name="_ProcessFinishedVertex-"></a> 588 <span class="k">sub </span><span class="m">_ProcessFinishedVertex</span> <span class="s">{</span>
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diff changeset
602 589 <span class="k">my</span><span class="s">(</span><span class="i">$This</span><span class="cm">,</span> <span class="i">$VertexID</span><span class="s">)</span> = <span class="i">@_</span><span class="sc">;</span>
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603 590
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diff changeset
604 591 <span class="k">if</span> <span class="s">(</span>!<span class="k">exists</span> <span class="i">$This</span>-&gt;{<span class="w">FinishedVertices</span>}{<span class="i">$VertexID</span>}<span class="s">)</span> <span class="s">{</span>
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parents:
diff changeset
605 592 <span class="i">$This</span>-&gt;{<span class="w">FinishedVertices</span>}{<span class="i">$VertexID</span>} = <span class="i">$VertexID</span><span class="sc">;</span>
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parents:
diff changeset
606 593 <span class="c"># Add vertex to list of vertices found by traversal...</span>
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diff changeset
607 594 <span class="k">push</span> <span class="i">@</span>{<span class="i">$This</span>-&gt;{<span class="w">Vertices</span>}}<span class="cm">,</span> <span class="i">$VertexID</span><span class="sc">;</span>
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608 595 <span class="s">}</span>
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diff changeset
609 596
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diff changeset
610 597 <span class="c"># Any active vertices left...</span>
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diff changeset
611 598 <span class="k">if</span> <span class="s">(</span>!<span class="i">@</span>{<span class="i">$This</span>-&gt;{<span class="w">ActiveVertices</span>}}<span class="s">)</span> <span class="s">{</span>
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612 599 <span class="k">return</span> <span class="i">$This</span><span class="sc">;</span>
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parents:
diff changeset
613 600 <span class="s">}</span>
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614 601
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615 602 <span class="c"># Take it off active vertices list...</span>
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diff changeset
616 603 <span class="k">if</span> <span class="s">(</span><span class="i">$This</span>-&gt;{<span class="w">TraversalType</span>} =~ <span class="q">/^(DFS|DFSWithLimit)$/i</span><span class="s">)</span> <span class="s">{</span>
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617 604 <span class="c"># For DFS, it&#39;s last vertex in LIFO queue...</span>
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618 605 <span class="k">pop</span> <span class="i">@</span>{<span class="i">$This</span>-&gt;{<span class="w">ActiveVertices</span>}}<span class="sc">;</span>
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619 606 <span class="s">}</span>
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620 607 <span class="k">elsif</span> <span class="s">(</span><span class="i">$This</span>-&gt;{<span class="w">TraversalType</span>} =~ <span class="q">/^(BFS|BFSWithLimit)$/i</span><span class="s">)</span> <span class="s">{</span>
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parents:
diff changeset
621 608 <span class="c"># For BFS, it&#39;s first vertex in FIFO queue...</span>
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deepakjadmin
parents:
diff changeset
622 609 <span class="k">shift</span> <span class="i">@</span>{<span class="i">$This</span>-&gt;{<span class="w">ActiveVertices</span>}}<span class="sc">;</span>
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parents:
diff changeset
623 610 <span class="s">}</span>
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parents:
diff changeset
624 611 <span class="k">return</span> <span class="i">$This</span><span class="sc">;</span>
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parents:
diff changeset
625 612 <span class="s">}</span>
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parents:
diff changeset
626 613
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parents:
diff changeset
627 614 <span class="c"># Mark all other downstream neighbor vertices to be ignored from any further</span>
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parents:
diff changeset
628 615 <span class="c"># processing...</span>
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parents:
diff changeset
629 616 <span class="c">#</span>
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parents:
diff changeset
630 <a name="_IgnoreDownstreamNeighbors-"></a> 617 <span class="k">sub </span><span class="m">_IgnoreDownstreamNeighbors</span> <span class="s">{</span>
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parents:
diff changeset
631 618 <span class="k">my</span><span class="s">(</span><span class="i">$This</span><span class="cm">,</span> <span class="i">$VertexID</span><span class="cm">,</span> <span class="i">$PredecessorVertexID</span><span class="s">)</span> = <span class="i">@_</span><span class="sc">;</span>
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parents:
diff changeset
632 619
73ae111cf86f Uploaded
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parents:
diff changeset
633 620 <span class="k">if</span> <span class="s">(</span><span class="k">exists</span> <span class="i">$This</span>-&gt;{<span class="w">VerticesToVisit</span>}{<span class="i">$VertexID</span>}<span class="s">)</span> <span class="s">{</span>
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deepakjadmin
parents:
diff changeset
634 621 <span class="c"># Mark vertex as visited vertex and take it out from the list of vertices to visit...</span>
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parents:
diff changeset
635 622 <span class="i">$This</span>-&gt;{<span class="w">VisitedVertices</span>}{<span class="i">$VertexID</span>} = <span class="n">1</span><span class="sc">;</span>
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deepakjadmin
parents:
diff changeset
636 623 <span class="k">delete</span> <span class="i">$This</span>-&gt;{<span class="w">VerticesToVisit</span>}{<span class="i">$VertexID</span>}<span class="sc">;</span>
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parents:
diff changeset
637 624
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parents:
diff changeset
638 625 <span class="k">if</span> <span class="s">(</span><span class="k">defined</span><span class="s">(</span><span class="i">$PredecessorVertexID</span><span class="s">)</span> &amp;&amp; <span class="i">$This</span>-&gt;{<span class="w">TraversalMode</span>} =~ <span class="q">/^(Path|VertexNeighborhood)$/i</span><span class="s">)</span> <span class="s">{</span>
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parents:
diff changeset
639 626 <span class="i">$This</span><span class="i">-&gt;_ProcessVisitedEdge</span><span class="s">(</span><span class="i">$VertexID</span><span class="cm">,</span> <span class="i">$PredecessorVertexID</span><span class="s">)</span><span class="sc">;</span>
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deepakjadmin
parents:
diff changeset
640 627 <span class="s">}</span>
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deepakjadmin
parents:
diff changeset
641 628 <span class="s">}</span>
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deepakjadmin
parents:
diff changeset
642 629 <span class="k">my</span><span class="s">(</span><span class="i">$NeighborVertexID</span><span class="cm">,</span> <span class="i">@NeighborsVertexIDs</span><span class="s">)</span><span class="sc">;</span>
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parents:
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643 630
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parents:
diff changeset
644 631 <span class="i">@NeighborsVertexIDs</span> = <span class="s">(</span><span class="s">)</span><span class="sc">;</span>
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parents:
diff changeset
645 632 <span class="i">@NeighborsVertexIDs</span> = <span class="i">$This</span>-&gt;{<span class="w">Graph</span>}<span class="i">-&gt;GetNeighbors</span><span class="s">(</span><span class="i">$VertexID</span><span class="s">)</span><span class="sc">;</span>
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parents:
diff changeset
646 633 <span class="j">NEIGHBOR:</span> <span class="k">for</span> <span class="i">$NeighborVertexID</span> <span class="s">(</span><span class="i">@NeighborsVertexIDs</span><span class="s">)</span> <span class="s">{</span>
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parents:
diff changeset
647 634 <span class="k">if</span> <span class="s">(</span>!<span class="k">exists</span> <span class="i">$This</span>-&gt;{<span class="w">VerticesToVisit</span>}{<span class="i">$NeighborVertexID</span>}<span class="s">)</span> <span class="s">{</span>
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parents:
diff changeset
648 635 <span class="c"># Avoid going back to predecessor vertex which has already been ignored...</span>
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parents:
diff changeset
649 636 <span class="k">next</span> <span class="j">NEIGHBOR</span><span class="sc">;</span>
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deepakjadmin
parents:
diff changeset
650 637 <span class="s">}</span>
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parents:
diff changeset
651 638 <span class="i">$This</span><span class="i">-&gt;_IgnoreDownstreamNeighbors</span><span class="s">(</span><span class="i">$NeighborVertexID</span><span class="cm">,</span> <span class="i">$VertexID</span><span class="s">)</span><span class="sc">;</span>
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parents:
diff changeset
652 639 <span class="s">}</span>
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parents:
diff changeset
653 640 <span class="k">return</span> <span class="i">$This</span><span class="sc">;</span>
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parents:
diff changeset
654 641 <span class="s">}</span>
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deepakjadmin
parents:
diff changeset
655 642
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parents:
diff changeset
656 643 <span class="c"># Is it a visited edge?</span>
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parents:
diff changeset
657 644 <span class="c">#</span>
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parents:
diff changeset
658 <a name="_IsVisitedEdge-"></a> 645 <span class="k">sub </span><span class="m">_IsVisitedEdge</span> <span class="s">{</span>
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parents:
diff changeset
659 646 <span class="k">my</span><span class="s">(</span><span class="i">$This</span><span class="cm">,</span> <span class="i">$VertexID1</span><span class="cm">,</span> <span class="i">$VertexID2</span><span class="s">)</span> = <span class="i">@_</span><span class="sc">;</span>
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parents:
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660 647
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parents:
diff changeset
661 648 <span class="k">if</span> <span class="s">(</span><span class="k">exists</span> <span class="i">$This</span>-&gt;{<span class="w">VisitedEdges</span>}-&gt;{<span class="w">From</span>}-&gt;{<span class="i">$VertexID1</span>}<span class="s">)</span> <span class="s">{</span>
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deepakjadmin
parents:
diff changeset
662 649 <span class="k">if</span> <span class="s">(</span><span class="k">exists</span> <span class="i">$This</span>-&gt;{<span class="w">VisitedEdges</span>}-&gt;{<span class="w">From</span>}-&gt;{<span class="i">$VertexID1</span>}-&gt;{<span class="i">$VertexID2</span>}<span class="s">)</span> <span class="s">{</span>
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deepakjadmin
parents:
diff changeset
663 650 <span class="k">return</span> <span class="n">1</span><span class="sc">;</span>
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deepakjadmin
parents:
diff changeset
664 651 <span class="s">}</span>
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deepakjadmin
parents:
diff changeset
665 652 <span class="s">}</span>
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deepakjadmin
parents:
diff changeset
666 653 <span class="k">elsif</span> <span class="s">(</span><span class="k">exists</span> <span class="i">$This</span>-&gt;{<span class="w">VisitedEdges</span>}-&gt;{<span class="w">To</span>}-&gt;{<span class="i">$VertexID2</span>}<span class="s">)</span> <span class="s">{</span>
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deepakjadmin
parents:
diff changeset
667 654 <span class="k">if</span> <span class="s">(</span><span class="k">exists</span> <span class="i">$This</span>-&gt;{<span class="w">VisitedEdges</span>}-&gt;{<span class="w">To</span>}-&gt;{<span class="i">$VertexID2</span>}-&gt;{<span class="i">$VertexID1</span>}<span class="s">)</span> <span class="s">{</span>
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
668 655 <span class="k">return</span> <span class="n">1</span><span class="sc">;</span>
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
669 656 <span class="s">}</span>
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
670 657 <span class="s">}</span>
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
671 658 <span class="k">return</span> <span class="n">0</span><span class="sc">;</span>
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
672 659 <span class="s">}</span>
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
673 660
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deepakjadmin
parents:
diff changeset
674 661 <span class="c"># Is it a cycle closure edge?</span>
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deepakjadmin
parents:
diff changeset
675 662 <span class="c">#</span>
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parents:
diff changeset
676 663 <span class="c"># Notes:</span>
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parents:
diff changeset
677 664 <span class="c"># . Presence of VertexID2 in DFS path traversed for VertexID1 make it a cycle</span>
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deepakjadmin
parents:
diff changeset
678 665 <span class="c"># closure edge...</span>
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parents:
diff changeset
679 666 <span class="c">#</span>
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deepakjadmin
parents:
diff changeset
680 <a name="_IsCycleClosureEdge-"></a> 667 <span class="k">sub </span><span class="m">_IsCycleClosureEdge</span> <span class="s">{</span>
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parents:
diff changeset
681 668 <span class="k">my</span><span class="s">(</span><span class="i">$This</span><span class="cm">,</span> <span class="i">$VertexID1</span><span class="cm">,</span> <span class="i">$VertexID2</span><span class="s">)</span> = <span class="i">@_</span><span class="sc">;</span>
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parents:
diff changeset
682 669
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parents:
diff changeset
683 670 <span class="k">if</span> <span class="s">(</span>!<span class="k">exists</span> <span class="i">$This</span>-&gt;{<span class="w">VerticesPaths</span>}{<span class="i">$VertexID1</span>}<span class="s">)</span> <span class="s">{</span>
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
684 671 <span class="k">return</span> <span class="n">0</span><span class="sc">;</span>
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deepakjadmin
parents:
diff changeset
685 672 <span class="s">}</span>
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parents:
diff changeset
686 673 <span class="k">my</span><span class="s">(</span><span class="i">$Path</span><span class="s">)</span><span class="sc">;</span>
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parents:
diff changeset
687 674 <span class="k">for</span> <span class="i">$Path</span> <span class="s">(</span><span class="i">@</span>{<span class="i">$This</span>-&gt;{<span class="w">VerticesPaths</span>}{<span class="i">$VertexID1</span>}}<span class="s">)</span> <span class="s">{</span>
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parents:
diff changeset
688 675 <span class="k">if</span> <span class="s">(</span><span class="s">(</span><span class="i">$Path</span> =~ <span class="q">/-$VertexID2-/</span> || <span class="i">$Path</span> =~ <span class="q">/^$VertexID2-/</span> || <span class="i">$Path</span> =~ <span class="q">/-$VertexID2$/</span><span class="s">)</span><span class="s">)</span> <span class="s">{</span>
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
689 676 <span class="k">return</span> <span class="n">1</span><span class="sc">;</span>
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
690 677 <span class="s">}</span>
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deepakjadmin
parents:
diff changeset
691 678 <span class="s">}</span>
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
692 679 <span class="k">return</span> <span class="n">0</span><span class="sc">;</span>
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
693 680 <span class="s">}</span>
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
694 681
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
695 682 <span class="c"># Search paths starting from a specified vertex with no sharing of edges in paths traversed.</span>
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
696 683 <span class="c"># By default, cycles are included in paths. A path containing a cycle is terminated at a vertex</span>
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
697 684 <span class="c"># completing the cycle.</span>
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
698 685 <span class="c">#</span>
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
699 <a name="PerformPathsSearch-"></a> 686 <span class="k">sub </span><span class="m">PerformPathsSearch</span> <span class="s">{</span>
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deepakjadmin
parents:
diff changeset
700 687 <span class="k">my</span><span class="s">(</span><span class="i">$This</span><span class="cm">,</span> <span class="i">$StartVertexID</span><span class="cm">,</span> <span class="i">$AllowCycles</span><span class="s">)</span> = <span class="i">@_</span><span class="sc">;</span>
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
701 688
73ae111cf86f Uploaded
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parents:
diff changeset
702 689 <span class="c"># Make sure start vertex is defined...</span>
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
703 690 <span class="k">if</span> <span class="s">(</span>!<span class="k">defined</span> <span class="i">$StartVertexID</span><span class="s">)</span> <span class="s">{</span>
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deepakjadmin
parents:
diff changeset
704 691 <span class="w">carp</span> <span class="q">&quot;Warning: ${ClassName}-&gt;PerformPathsSearch: No paths search performed: Start vertex must be specified...&quot;</span><span class="sc">;</span>
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
705 692 <span class="k">return</span> <span class="k">undef</span><span class="sc">;</span>
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deepakjadmin
parents:
diff changeset
706 693 <span class="s">}</span>
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
707 694
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
708 695 <span class="c"># Make sure start vertex is valid...</span>
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
709 696 <span class="k">if</span> <span class="s">(</span>!<span class="i">$This</span>-&gt;{<span class="w">Graph</span>}<span class="i">-&gt;HasVertex</span><span class="s">(</span><span class="i">$StartVertexID</span><span class="s">)</span><span class="s">)</span> <span class="s">{</span>
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
710 697 <span class="w">carp</span> <span class="q">&quot;Warning: ${ClassName}-&gt;PerformPathsSearch: No paths search performed: Vertex $StartVertexID doesn&#39;t exist...&quot;</span><span class="sc">;</span>
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
711 698 <span class="k">return</span> <span class="k">undef</span><span class="sc">;</span>
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
712 699 <span class="s">}</span>
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deepakjadmin
parents:
diff changeset
713 700
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
714 701 <span class="k">if</span> <span class="s">(</span>!<span class="k">defined</span> <span class="i">$AllowCycles</span><span class="s">)</span> <span class="s">{</span>
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
715 702 <span class="i">$AllowCycles</span> = <span class="n">1</span><span class="sc">;</span>
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
716 703 <span class="s">}</span>
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deepakjadmin
parents:
diff changeset
717 704
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
718 705 <span class="c"># Perform paths search...</span>
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deepakjadmin
parents:
diff changeset
719 706 <span class="k">return</span> <span class="i">$This</span><span class="i">-&gt;_PerformPathsSearch</span><span class="s">(</span><span class="q">&quot;AllLengths&quot;</span><span class="cm">,</span> <span class="i">$StartVertexID</span><span class="cm">,</span> <span class="i">$AllowCycles</span><span class="s">)</span><span class="sc">;</span>
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deepakjadmin
parents:
diff changeset
720 707 <span class="s">}</span>
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
721 708
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
722 709 <span class="c"># Search paths starting from a specified vertex with length upto a specified length</span>
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
723 710 <span class="c"># with no sharing of edges in paths traversed...</span>
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
724 711 <span class="c">#</span>
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deepakjadmin
parents:
diff changeset
725 712 <span class="c"># By default, cycles are included in paths. A path containing a cycle is terminated at a vertex</span>
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deepakjadmin
parents:
diff changeset
726 713 <span class="c"># completing the cycle.</span>
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
727 714 <span class="c">#</span>
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
728 <a name="PerformPathsSearchWithLengthUpto-"></a> 715 <span class="k">sub </span><span class="m">PerformPathsSearchWithLengthUpto</span> <span class="s">{</span>
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deepakjadmin
parents:
diff changeset
729 716 <span class="k">my</span><span class="s">(</span><span class="i">$This</span><span class="cm">,</span> <span class="i">$StartVertexID</span><span class="cm">,</span> <span class="i">$Length</span><span class="cm">,</span> <span class="i">$AllowCycles</span><span class="s">)</span> = <span class="i">@_</span><span class="sc">;</span>
73ae111cf86f Uploaded
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parents:
diff changeset
730 717
73ae111cf86f Uploaded
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parents:
diff changeset
731 718 <span class="k">return</span> <span class="i">$This</span><span class="i">-&gt;_PerformPathsSearchWithLength</span><span class="s">(</span><span class="q">&quot;LengthUpto&quot;</span><span class="cm">,</span> <span class="i">$StartVertexID</span><span class="cm">,</span> <span class="i">$Length</span><span class="cm">,</span> <span class="i">$AllowCycles</span><span class="s">)</span><span class="sc">;</span>
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deepakjadmin
parents:
diff changeset
732 719 <span class="s">}</span>
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
733 720
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
734 721 <span class="c"># Search paths starting from a specified vertex with specified length</span>
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deepakjadmin
parents:
diff changeset
735 722 <span class="c"># with no sharing of edges in paths traversed...</span>
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deepakjadmin
parents:
diff changeset
736 723 <span class="c">#</span>
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
737 724 <span class="c"># By default, cycles are included in paths. A path containing a cycle is terminated at a vertex</span>
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deepakjadmin
parents:
diff changeset
738 725 <span class="c"># completing the cycle.</span>
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deepakjadmin
parents:
diff changeset
739 726 <span class="c">#</span>
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deepakjadmin
parents:
diff changeset
740 <a name="PerformPathsSearchWithLength-"></a> 727 <span class="k">sub </span><span class="m">PerformPathsSearchWithLength</span> <span class="s">{</span>
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parents:
diff changeset
741 728 <span class="k">my</span><span class="s">(</span><span class="i">$This</span><span class="cm">,</span> <span class="i">$StartVertexID</span><span class="cm">,</span> <span class="i">$Length</span><span class="cm">,</span> <span class="i">$AllowCycles</span><span class="s">)</span> = <span class="i">@_</span><span class="sc">;</span>
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
742 729
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deepakjadmin
parents:
diff changeset
743 730 <span class="k">return</span> <span class="i">$This</span><span class="i">-&gt;_PerformPathsSearchWithLength</span><span class="s">(</span><span class="q">&quot;Length&quot;</span><span class="cm">,</span> <span class="i">$StartVertexID</span><span class="cm">,</span> <span class="i">$Length</span><span class="cm">,</span> <span class="i">$AllowCycles</span><span class="s">)</span><span class="sc">;</span>
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
744 731 <span class="s">}</span>
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
745 732
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
746 733
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
747 734 <span class="c"># Search paths starting from a specified vertex with length upto a specified length</span>
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
748 735 <span class="c"># with no sharing of edges in paths traversed...</span>
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
749 736 <span class="c">#</span>
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
750 737 <span class="c"># By default, cycles are included in paths. A path containing a cycle is terminated at a vertex</span>
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
751 738 <span class="c"># completing the cycle.</span>
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
752 739 <span class="c">#</span>
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
753 <a name="_PerformPathsSearchWithLength-"></a> 740 <span class="k">sub </span><span class="m">_PerformPathsSearchWithLength</span> <span class="s">{</span>
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
754 741 <span class="k">my</span><span class="s">(</span><span class="i">$This</span><span class="cm">,</span> <span class="i">$Mode</span><span class="cm">,</span> <span class="i">$StartVertexID</span><span class="cm">,</span> <span class="i">$Length</span><span class="cm">,</span> <span class="i">$AllowCycles</span><span class="s">)</span> = <span class="i">@_</span><span class="sc">;</span>
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deepakjadmin
parents:
diff changeset
755 742
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
756 743 <span class="c"># Make sure both start vertex and length are defined...</span>
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
757 744 <span class="k">if</span> <span class="s">(</span>!<span class="k">defined</span> <span class="i">$StartVertexID</span><span class="s">)</span> <span class="s">{</span>
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
758 745 <span class="w">carp</span> <span class="q">&quot;Warning: ${ClassName}-&gt;_PerformPathsSearchWithLength: No paths search performed: Start vertex must be specified...&quot;</span><span class="sc">;</span>
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
759 746 <span class="k">return</span> <span class="k">undef</span><span class="sc">;</span>
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
760 747 <span class="s">}</span>
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deepakjadmin
parents:
diff changeset
761 748 <span class="k">if</span> <span class="s">(</span>!<span class="k">defined</span> <span class="i">$Length</span><span class="s">)</span> <span class="s">{</span>
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
762 749 <span class="w">carp</span> <span class="q">&quot;Warning: ${ClassName}-&gt;_PerformPathsSearchWithLength: No paths search performed: Length must be specified...&quot;</span><span class="sc">;</span>
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
763 750 <span class="k">return</span> <span class="k">undef</span><span class="sc">;</span>
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
764 751 <span class="s">}</span>
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
765 752
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
766 753 <span class="k">if</span> <span class="s">(</span>!<span class="k">defined</span> <span class="i">$AllowCycles</span><span class="s">)</span> <span class="s">{</span>
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
767 754 <span class="i">$AllowCycles</span> = <span class="n">1</span><span class="sc">;</span>
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
768 755 <span class="s">}</span>
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
769 756
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
770 757 <span class="c"># Make sure both start vertex and length are valid...</span>
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
771 758 <span class="k">if</span> <span class="s">(</span>!<span class="i">$This</span>-&gt;{<span class="w">Graph</span>}<span class="i">-&gt;HasVertex</span><span class="s">(</span><span class="i">$StartVertexID</span><span class="s">)</span><span class="s">)</span> <span class="s">{</span>
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
772 759 <span class="w">carp</span> <span class="q">&quot;Warning: ${ClassName}-&gt;_PerformPathsSearchWithLength: No paths search performed: Vertex $StartVertexID doesn&#39;t exist...&quot;</span><span class="sc">;</span>
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
773 760 <span class="k">return</span> <span class="k">undef</span><span class="sc">;</span>
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deepakjadmin
parents:
diff changeset
774 761 <span class="s">}</span>
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deepakjadmin
parents:
diff changeset
775 762
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deepakjadmin
parents:
diff changeset
776 763 <span class="k">if</span> <span class="s">(</span><span class="i">$Length</span> &lt; <span class="n">1</span><span class="s">)</span> <span class="s">{</span>
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
777 764 <span class="w">carp</span> <span class="q">&quot;Warning: ${ClassName}-&gt;_PerformPathsSearchWithLength: No paths search performed: Specified length, $Length, must be a positive integer with value greater than 1...&quot;</span><span class="sc">;</span>
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
778 765 <span class="k">return</span> <span class="k">undef</span><span class="sc">;</span>
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deepakjadmin
parents:
diff changeset
779 766 <span class="s">}</span>
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deepakjadmin
parents:
diff changeset
780 767
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deepakjadmin
parents:
diff changeset
781 768 <span class="c"># Perform paths search...</span>
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
782 769 <span class="k">return</span> <span class="i">$This</span><span class="i">-&gt;_PerformPathsSearch</span><span class="s">(</span><span class="i">$Mode</span><span class="cm">,</span> <span class="i">$StartVertexID</span><span class="cm">,</span> <span class="i">$AllowCycles</span><span class="cm">,</span> <span class="i">$Length</span><span class="s">)</span><span class="sc">;</span>
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deepakjadmin
parents:
diff changeset
783 770 <span class="s">}</span>
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
784 771
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
785 772 <span class="c"># Search all paths starting from a specified vertex with sharing of edges in paths traversed...</span>
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
786 773 <span class="c"># By default, cycles are included in paths. A path containing a cycle is terminated at a vertex</span>
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
787 774 <span class="c"># completing the cycle.</span>
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deepakjadmin
parents:
diff changeset
788 775 <span class="c">#</span>
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deepakjadmin
parents:
diff changeset
789 <a name="PerformAllPathsSearch-"></a> 776 <span class="k">sub </span><span class="m">PerformAllPathsSearch</span> <span class="s">{</span>
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
790 777 <span class="k">my</span><span class="s">(</span><span class="i">$This</span><span class="cm">,</span> <span class="i">$StartVertexID</span><span class="cm">,</span> <span class="i">$AllowCycles</span><span class="s">)</span> = <span class="i">@_</span><span class="sc">;</span>
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deepakjadmin
parents:
diff changeset
791 778
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
792 779 <span class="c"># Make sure start vertex is defined...</span>
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
793 780 <span class="k">if</span> <span class="s">(</span>!<span class="k">defined</span> <span class="i">$StartVertexID</span><span class="s">)</span> <span class="s">{</span>
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
794 781 <span class="w">carp</span> <span class="q">&quot;Warning: ${ClassName}-&gt;PerformAllPathsSearch: No paths search performed: Start vertex must be specified...&quot;</span><span class="sc">;</span>
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
795 782 <span class="k">return</span> <span class="k">undef</span><span class="sc">;</span>
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
796 783 <span class="s">}</span>
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
797 784
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
798 785 <span class="c"># Make sure start vertex is valid...</span>
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
799 786 <span class="k">if</span> <span class="s">(</span>!<span class="i">$This</span>-&gt;{<span class="w">Graph</span>}<span class="i">-&gt;HasVertex</span><span class="s">(</span><span class="i">$StartVertexID</span><span class="s">)</span><span class="s">)</span> <span class="s">{</span>
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
800 787 <span class="w">carp</span> <span class="q">&quot;Warning: ${ClassName}-&gt;PerformAllPathsSearch: No paths search performed: Vertex $StartVertexID doesn&#39;t exist...&quot;</span><span class="sc">;</span>
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
801 788 <span class="k">return</span> <span class="k">undef</span><span class="sc">;</span>
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
802 789 <span class="s">}</span>
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
803 790
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
804 791 <span class="k">if</span> <span class="s">(</span>!<span class="k">defined</span> <span class="i">$AllowCycles</span><span class="s">)</span> <span class="s">{</span>
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
805 792 <span class="i">$AllowCycles</span> = <span class="n">1</span><span class="sc">;</span>
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
806 793 <span class="s">}</span>
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
807 794
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
808 795 <span class="c"># Perform paths search...</span>
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
809 796 <span class="k">return</span> <span class="i">$This</span><span class="i">-&gt;_PerformAllPathsSearch</span><span class="s">(</span><span class="q">&quot;AllLengths&quot;</span><span class="cm">,</span> <span class="i">$StartVertexID</span><span class="cm">,</span> <span class="i">$AllowCycles</span><span class="s">)</span><span class="sc">;</span>
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
810 797 <span class="s">}</span>
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
811 798
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
812 799 <span class="c"># Search all paths starting from a specified vertex with length upto a specified length with sharing of</span>
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
813 800 <span class="c"># edges in paths traversed.</span>
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
814 801 <span class="c">#</span>
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
815 802 <span class="c"># By default, cycles are included in paths. A path containing a cycle is terminated at a vertex</span>
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
816 803 <span class="c"># completing the cycle.</span>
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
817 804 <span class="c">#</span>
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
818 <a name="PerformAllPathsSearchWithLengthUpto-"></a> 805 <span class="k">sub </span><span class="m">PerformAllPathsSearchWithLengthUpto</span> <span class="s">{</span>
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
819 806 <span class="k">my</span><span class="s">(</span><span class="i">$This</span><span class="cm">,</span> <span class="i">$StartVertexID</span><span class="cm">,</span> <span class="i">$Length</span><span class="cm">,</span> <span class="i">$AllowCycles</span><span class="s">)</span> = <span class="i">@_</span><span class="sc">;</span>
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
820 807
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
821 808 <span class="k">return</span> <span class="i">$This</span><span class="i">-&gt;_PerformAllPathsSearchWithLength</span><span class="s">(</span><span class="q">&quot;LengthUpto&quot;</span><span class="cm">,</span> <span class="i">$StartVertexID</span><span class="cm">,</span> <span class="i">$Length</span><span class="cm">,</span> <span class="i">$AllowCycles</span><span class="s">)</span><span class="sc">;</span>
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
822 809 <span class="s">}</span>
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
823 810
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
824 811 <span class="c"># Search all paths starting from a specified vertex with specified length with sharing of</span>
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
825 812 <span class="c"># edges in paths traversed.</span>
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
826 813 <span class="c">#</span>
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
827 814 <span class="c"># By default, cycles are included in paths. A path containing a cycle is terminated at a vertex</span>
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
828 815 <span class="c"># completing the cycle.</span>
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
829 816 <span class="c">#</span>
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
830 <a name="PerformAllPathsSearchWithLength-"></a> 817 <span class="k">sub </span><span class="m">PerformAllPathsSearchWithLength</span> <span class="s">{</span>
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
831 818 <span class="k">my</span><span class="s">(</span><span class="i">$This</span><span class="cm">,</span> <span class="i">$StartVertexID</span><span class="cm">,</span> <span class="i">$Length</span><span class="cm">,</span> <span class="i">$AllowCycles</span><span class="s">)</span> = <span class="i">@_</span><span class="sc">;</span>
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
832 819
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
833 820 <span class="k">return</span> <span class="i">$This</span><span class="i">-&gt;_PerformAllPathsSearchWithLength</span><span class="s">(</span><span class="q">&quot;Length&quot;</span><span class="cm">,</span> <span class="i">$StartVertexID</span><span class="cm">,</span> <span class="i">$Length</span><span class="cm">,</span> <span class="i">$AllowCycles</span><span class="s">)</span><span class="sc">;</span>
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
834 821 <span class="s">}</span>
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
835 822
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
836 823 <span class="c"># Search all paths starting from a specified vertex with length upto a specified length with sharing of</span>
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
837 824 <span class="c"># edges in paths traversed.</span>
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
838 825 <span class="c">#</span>
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
839 826 <span class="c"># By default, cycles are included in paths. A path containing a cycle is terminated at a vertex</span>
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
840 827 <span class="c"># completing the cycle.</span>
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
841 828 <span class="c">#</span>
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
842 <a name="_PerformAllPathsSearchWithLength-"></a> 829 <span class="k">sub </span><span class="m">_PerformAllPathsSearchWithLength</span> <span class="s">{</span>
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
843 830 <span class="k">my</span><span class="s">(</span><span class="i">$This</span><span class="cm">,</span> <span class="i">$Mode</span><span class="cm">,</span> <span class="i">$StartVertexID</span><span class="cm">,</span> <span class="i">$Length</span><span class="cm">,</span> <span class="i">$AllowCycles</span><span class="s">)</span> = <span class="i">@_</span><span class="sc">;</span>
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
844 831
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
845 832 <span class="c"># Make sure both start vertex and length are defined...</span>
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
846 833 <span class="k">if</span> <span class="s">(</span>!<span class="k">defined</span> <span class="i">$StartVertexID</span><span class="s">)</span> <span class="s">{</span>
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
847 834 <span class="w">carp</span> <span class="q">&quot;Warning: ${ClassName}-&gt;_PerformAllPathsSearchWithLength: No paths search performed: Start vertex must be specified...&quot;</span><span class="sc">;</span>
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
848 835 <span class="k">return</span> <span class="k">undef</span><span class="sc">;</span>
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
849 836 <span class="s">}</span>
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
850 837 <span class="k">if</span> <span class="s">(</span>!<span class="k">defined</span> <span class="i">$Length</span><span class="s">)</span> <span class="s">{</span>
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
851 838 <span class="w">carp</span> <span class="q">&quot;Warning: ${ClassName}-&gt;_PerformAllPathsSearchWithLength: No paths search performed: Length must be specified...&quot;</span><span class="sc">;</span>
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
852 839 <span class="k">return</span> <span class="k">undef</span><span class="sc">;</span>
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
853 840 <span class="s">}</span>
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
854 841
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
855 842 <span class="k">if</span> <span class="s">(</span>!<span class="k">defined</span> <span class="i">$AllowCycles</span><span class="s">)</span> <span class="s">{</span>
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
856 843 <span class="i">$AllowCycles</span> = <span class="n">1</span><span class="sc">;</span>
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
857 844 <span class="s">}</span>
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
858 845
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
859 846 <span class="c"># Make sure both start vertex and length are valid...</span>
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
860 847 <span class="k">if</span> <span class="s">(</span>!<span class="i">$This</span>-&gt;{<span class="w">Graph</span>}<span class="i">-&gt;HasVertex</span><span class="s">(</span><span class="i">$StartVertexID</span><span class="s">)</span><span class="s">)</span> <span class="s">{</span>
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
861 848 <span class="w">carp</span> <span class="q">&quot;Warning: ${ClassName}-&gt;_PerformAllPathsSearchWithLength: No paths search performed: Vertex $StartVertexID doesn&#39;t exist...&quot;</span><span class="sc">;</span>
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
862 849 <span class="k">return</span> <span class="k">undef</span><span class="sc">;</span>
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
863 850 <span class="s">}</span>
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
864 851
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
865 852 <span class="k">if</span> <span class="s">(</span><span class="i">$Length</span> &lt; <span class="n">1</span><span class="s">)</span> <span class="s">{</span>
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deepakjadmin
parents:
diff changeset
866 853 <span class="w">carp</span> <span class="q">&quot;Warning: ${ClassName}-&gt;_PerformAllPathsSearchWithLength: No paths search performed: Specified length, $Length, must be a positive integer with value greater than 1...&quot;</span><span class="sc">;</span>
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
867 854 <span class="k">return</span> <span class="k">undef</span><span class="sc">;</span>
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
868 855 <span class="s">}</span>
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deepakjadmin
parents:
diff changeset
869 856
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
870 857 <span class="c"># Perform paths search...</span>
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parents:
diff changeset
871 858 <span class="k">return</span> <span class="i">$This</span><span class="i">-&gt;_PerformAllPathsSearch</span><span class="s">(</span><span class="i">$Mode</span><span class="cm">,</span> <span class="i">$StartVertexID</span><span class="cm">,</span> <span class="i">$AllowCycles</span><span class="cm">,</span> <span class="i">$Length</span><span class="s">)</span><span class="sc">;</span>
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deepakjadmin
parents:
diff changeset
872 859 <span class="s">}</span>
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deepakjadmin
parents:
diff changeset
873 860
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
874 861 <span class="c"># Search paths between two vertices...</span>
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deepakjadmin
parents:
diff changeset
875 862 <span class="c">#</span>
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
876 <a name="PerformPathsSearchBetween-"></a> 863 <span class="k">sub </span><span class="m">PerformPathsSearchBetween</span> <span class="s">{</span>
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deepakjadmin
parents:
diff changeset
877 864 <span class="k">my</span><span class="s">(</span><span class="i">$This</span><span class="cm">,</span> <span class="i">$StartVertexID</span><span class="cm">,</span> <span class="i">$EndVertexID</span><span class="s">)</span> = <span class="i">@_</span><span class="sc">;</span>
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deepakjadmin
parents:
diff changeset
878 865
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
879 866 <span class="c"># Make sure start and end vertices are defined...</span>
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
880 867 <span class="k">if</span> <span class="s">(</span>!<span class="k">defined</span> <span class="i">$StartVertexID</span><span class="s">)</span> <span class="s">{</span>
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
881 868 <span class="w">carp</span> <span class="q">&quot;Warning: ${ClassName}-&gt;PerformPathsSearchBetweeb: No paths search performed: Start vertex must be specified...&quot;</span><span class="sc">;</span>
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
882 869 <span class="k">return</span> <span class="k">undef</span><span class="sc">;</span>
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
883 870 <span class="s">}</span>
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deepakjadmin
parents:
diff changeset
884 871 <span class="k">if</span> <span class="s">(</span>!<span class="k">defined</span> <span class="i">$EndVertexID</span><span class="s">)</span> <span class="s">{</span>
73ae111cf86f Uploaded
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parents:
diff changeset
885 872 <span class="w">carp</span> <span class="q">&quot;Warning: ${ClassName}-&gt;PerformPathsSearchBetweeb: No paths search performed: EndVertex vertex must be specified...&quot;</span><span class="sc">;</span>
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
886 873 <span class="k">return</span> <span class="k">undef</span><span class="sc">;</span>
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
887 874 <span class="s">}</span>
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
888 875 <span class="c"># Make sure start and end vertices are valid...</span>
73ae111cf86f Uploaded
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parents:
diff changeset
889 876 <span class="k">if</span> <span class="s">(</span>!<span class="i">$This</span>-&gt;{<span class="w">Graph</span>}<span class="i">-&gt;HasVertex</span><span class="s">(</span><span class="i">$StartVertexID</span><span class="s">)</span><span class="s">)</span> <span class="s">{</span>
73ae111cf86f Uploaded
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parents:
diff changeset
890 877 <span class="w">carp</span> <span class="q">&quot;Warning: ${ClassName}-&gt;PerformPathsSearchBetween: No paths search performed: Vertex $StartVertexID doesn&#39;t exist...&quot;</span><span class="sc">;</span>
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
891 878 <span class="k">return</span> <span class="k">undef</span><span class="sc">;</span>
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deepakjadmin
parents:
diff changeset
892 879 <span class="s">}</span>
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
893 880 <span class="k">if</span> <span class="s">(</span>!<span class="i">$This</span>-&gt;{<span class="w">Graph</span>}<span class="i">-&gt;HasVertex</span><span class="s">(</span><span class="i">$EndVertexID</span><span class="s">)</span><span class="s">)</span> <span class="s">{</span>
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
894 881 <span class="w">carp</span> <span class="q">&quot;Warning: ${ClassName}-&gt;PerformPathsSearchBetween: No paths search performed: Vertex $EndVertexID doesn&#39;t exist...&quot;</span><span class="sc">;</span>
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
895 882 <span class="k">return</span> <span class="k">undef</span><span class="sc">;</span>
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
896 883 <span class="s">}</span>
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
897 884
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
898 885 <span class="c"># Perform paths search...</span>
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
899 886 <span class="k">return</span> <span class="i">$This</span><span class="i">-&gt;_PerformPathsSearchBetween</span><span class="s">(</span><span class="i">$StartVertexID</span><span class="cm">,</span> <span class="i">$EndVertexID</span><span class="s">)</span><span class="sc">;</span>
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
900 887 <span class="s">}</span>
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
901 888
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
902 889 <span class="c"># Search paths starting from root vertex with no sharing of edges...</span>
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
903 890 <span class="c">#</span>
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
904 891 <span class="c"># Notes:</span>
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
905 892 <span class="c"># . Possible paths searche modes are: DFSPathsWithLimit, DFSPaths. And each</span>
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
906 893 <span class="c"># of these modes supports any combination of two options: CommonEdges, Cycles.</span>
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
907 894 <span class="c"># Default for CommonEdges - No; Cycles - No.</span>
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
908 895 <span class="c">#</span>
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
909 <a name="_PerformPathsSearch-"></a> 896 <span class="k">sub </span><span class="m">_PerformPathsSearch</span> <span class="s">{</span>
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
910 897 <span class="k">my</span><span class="s">(</span><span class="i">$This</span><span class="cm">,</span> <span class="i">$Mode</span><span class="cm">,</span> <span class="i">$RootVertexID</span><span class="cm">,</span> <span class="i">$AllowCycles</span><span class="cm">,</span> <span class="i">$Length</span><span class="s">)</span> = <span class="i">@_</span><span class="sc">;</span>
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deepakjadmin
parents:
diff changeset
911 898
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
912 899 <span class="c"># Perform DFS path search...</span>
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deepakjadmin
parents:
diff changeset
913 900
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
914 901 <span class="i">$This</span>-&gt;{<span class="w">TraversalMode</span>} = <span class="q">&#39;Path&#39;</span><span class="sc">;</span>
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
915 902
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
916 903 <span class="k">if</span> <span class="s">(</span><span class="i">$Mode</span> =~ <span class="q">/^(LengthUpto|Length)$/i</span><span class="s">)</span> <span class="s">{</span>
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
917 904 <span class="k">my</span><span class="s">(</span><span class="i">$DepthLimit</span><span class="s">)</span><span class="sc">;</span>
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
918 905
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
919 906 <span class="i">$DepthLimit</span> = <span class="i">$Length</span> - <span class="n">1</span><span class="sc">;</span>
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
920 907 <span class="i">$This</span>-&gt;{<span class="w">TraversalType</span>} = <span class="q">&#39;DFSWithLimit&#39;</span><span class="sc">;</span>
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
921 908 <span class="i">$This</span>-&gt;{<span class="w">DepthLimit</span>} = <span class="i">$DepthLimit</span><span class="sc">;</span>
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
922 909 <span class="s">}</span>
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
923 910 <span class="k">else</span> <span class="s">{</span>
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
924 911 <span class="i">$This</span>-&gt;{<span class="w">TraversalType</span>} = <span class="q">&#39;DFS&#39;</span><span class="sc">;</span>
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deepakjadmin
parents:
diff changeset
925 912 <span class="s">}</span>
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deepakjadmin
parents:
diff changeset
926 913 <span class="k">if</span> <span class="s">(</span><span class="k">defined</span> <span class="i">$RootVertexID</span><span class="s">)</span> <span class="s">{</span>
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
927 914 <span class="i">$This</span>-&gt;{<span class="w">RootVertex</span>} = <span class="i">$RootVertexID</span><span class="sc">;</span>
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
928 915 <span class="s">}</span>
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
929 916
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
930 917 <span class="i">$This</span>-&gt;{<span class="w">AllowPathCycles</span>} = <span class="i">$AllowCycles</span><span class="sc">;</span>
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
931 918
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
932 919 <span class="c"># Perform search...</span>
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
933 920 <span class="i">$This</span><span class="i">-&gt;_TraverseGraph</span><span class="s">(</span><span class="s">)</span><span class="sc">;</span>
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
934 921
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
935 922 <span class="c"># Make sure traversal did get the root vertex...</span>
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
936 923 <span class="k">if</span> <span class="s">(</span>!<span class="k">exists</span> <span class="i">$This</span>-&gt;{<span class="w">VerticesDepth</span>}{<span class="i">$RootVertexID</span>}<span class="s">)</span> <span class="s">{</span>
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
937 924 <span class="k">return</span> <span class="i">$This</span><span class="sc">;</span>
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
938 925 <span class="s">}</span>
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
939 926 <span class="k">if</span> <span class="s">(</span><span class="i">$Mode</span> =~ <span class="q">/^Length$/i</span><span class="s">)</span> <span class="s">{</span>
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
940 927 <span class="k">push</span> <span class="i">@</span>{<span class="i">$This</span>-&gt;{<span class="w">Paths</span>}}<span class="cm">,</span> <span class="i">$This</span><span class="i">-&gt;_CollectPathsTraversedDuringPathsSearchWithLength</span><span class="s">(</span><span class="i">$Length</span><span class="s">)</span><span class="sc">;</span>
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
941 928 <span class="s">}</span>
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
942 929 <span class="k">else</span> <span class="s">{</span>
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
943 930 <span class="k">push</span> <span class="i">@</span>{<span class="i">$This</span>-&gt;{<span class="w">Paths</span>}}<span class="cm">,</span> <span class="i">$This</span><span class="i">-&gt;_CollectPathsTraversedDuringPathsSearch</span><span class="s">(</span><span class="s">)</span><span class="sc">;</span>
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
944 931 <span class="s">}</span>
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
945 932
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
946 933 <span class="k">return</span> <span class="i">$This</span><span class="sc">;</span>
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
947 934 <span class="s">}</span>
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
948 935
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
949 936 <span class="c"># Search all paths starting from root vertex with sharing of edges...</span>
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
950 937 <span class="c">#</span>
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
951 <a name="_PerformAllPathsSearch-"></a> 938 <span class="k">sub </span><span class="m">_PerformAllPathsSearch</span> <span class="s">{</span>
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
952 939 <span class="k">my</span><span class="s">(</span><span class="i">$This</span><span class="cm">,</span> <span class="i">$Mode</span><span class="cm">,</span> <span class="i">$RootVertexID</span><span class="cm">,</span> <span class="i">$AllowCycles</span><span class="cm">,</span> <span class="i">$Length</span><span class="s">)</span> = <span class="i">@_</span><span class="sc">;</span>
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
953 940
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
954 941 <span class="c"># Perform DFS path search...</span>
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
955 942
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
956 943 <span class="i">$This</span>-&gt;{<span class="w">TraversalMode</span>} = <span class="q">&#39;AllPaths&#39;</span><span class="sc">;</span>
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
957 944
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
958 945 <span class="k">if</span> <span class="s">(</span><span class="i">$Mode</span> =~ <span class="q">/^(LengthUpto|Length)$/i</span><span class="s">)</span> <span class="s">{</span>
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
959 946 <span class="k">my</span><span class="s">(</span><span class="i">$DepthLimit</span><span class="s">)</span><span class="sc">;</span>
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
960 947
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
961 948 <span class="i">$DepthLimit</span> = <span class="i">$Length</span> - <span class="n">1</span><span class="sc">;</span>
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
962 949 <span class="i">$This</span>-&gt;{<span class="w">TraversalType</span>} = <span class="q">&#39;DFSWithLimit&#39;</span><span class="sc">;</span>
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
963 950 <span class="i">$This</span>-&gt;{<span class="w">DepthLimit</span>} = <span class="i">$DepthLimit</span><span class="sc">;</span>
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
964 951 <span class="s">}</span>
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
965 952 <span class="k">else</span> <span class="s">{</span>
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
966 953 <span class="i">$This</span>-&gt;{<span class="w">TraversalType</span>} = <span class="q">&#39;DFS&#39;</span><span class="sc">;</span>
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
967 954 <span class="s">}</span>
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
968 955 <span class="i">$This</span>-&gt;{<span class="w">RootVertex</span>} = <span class="i">$RootVertexID</span><span class="sc">;</span>
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
969 956 <span class="i">$This</span>-&gt;{<span class="w">AllowPathCycles</span>} = <span class="i">$AllowCycles</span><span class="sc">;</span>
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
970 957
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
971 958 <span class="c"># Traverse all paths search using DFS search...</span>
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
972 959 <span class="i">$This</span><span class="i">-&gt;_TraverseAllPathsInGraph</span><span class="s">(</span><span class="i">$Mode</span><span class="cm">,</span> <span class="i">$Length</span><span class="s">)</span><span class="sc">;</span>
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
973 960
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
974 961 <span class="k">return</span> <span class="i">$This</span><span class="sc">;</span>
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
975 962 <span class="s">}</span>
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
976 963
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
977 964 <span class="c"># Travese all paths in graph starting from a specified root vertex...</span>
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
978 965 <span class="c">#</span>
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
979 <a name="_TraverseAllPathsInGraph-"></a> 966 <span class="k">sub </span><span class="m">_TraverseAllPathsInGraph</span> <span class="s">{</span>
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
980 967 <span class="k">my</span><span class="s">(</span><span class="i">$This</span><span class="cm">,</span> <span class="i">$Mode</span><span class="cm">,</span> <span class="i">$Length</span><span class="s">)</span> = <span class="i">@_</span><span class="sc">;</span>
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
981 968
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
982 969 <span class="k">if</span> <span class="s">(</span><span class="i">$This</span>-&gt;{<span class="w">TraversalMode</span>} !~ <span class="q">/^AllPaths$/i</span><span class="s">)</span> <span class="s">{</span>
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
983 970 <span class="k">return</span> <span class="i">$This</span><span class="sc">;</span>
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
984 971 <span class="s">}</span>
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
985 972 <span class="k">my</span><span class="s">(</span><span class="i">$CurrentVertexID</span><span class="cm">,</span> <span class="i">$PredecessorVertexID</span><span class="cm">,</span> <span class="i">$CurrentDepth</span><span class="cm">,</span> <span class="i">$CurrentPath</span><span class="s">)</span><span class="sc">;</span>
73ae111cf86f Uploaded
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parents:
diff changeset
986 973
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
987 974 <span class="i">$CurrentVertexID</span> = <span class="i">$This</span>-&gt;{<span class="w">RootVertex</span>}<span class="sc">;</span>
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
988 975 <span class="i">$PredecessorVertexID</span> = <span class="i">$CurrentVertexID</span><span class="sc">;</span>
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
989 976 <span class="i">$CurrentDepth</span> = <span class="n">0</span><span class="sc">;</span>
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990 977 <span class="i">$CurrentPath</span> = <span class="q">&quot;$CurrentVertexID&quot;</span><span class="sc">;</span>
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991 978
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992 979 <span class="i">$This</span><span class="i">-&gt;_TraverseAllPaths</span><span class="s">(</span><span class="i">$CurrentVertexID</span><span class="cm">,</span> <span class="i">$PredecessorVertexID</span><span class="cm">,</span> <span class="i">$CurrentDepth</span><span class="cm">,</span> <span class="i">$CurrentPath</span><span class="s">)</span><span class="sc">;</span>
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993 980
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994 981 <span class="k">if</span> <span class="s">(</span><span class="i">$Mode</span> =~ <span class="q">/^Length$/i</span><span class="s">)</span> <span class="s">{</span>
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995 982 <span class="k">push</span> <span class="i">@</span>{<span class="i">$This</span>-&gt;{<span class="w">Paths</span>}}<span class="cm">,</span> <span class="i">$This</span><span class="i">-&gt;_CollectPathsTraversedDuringPathsSearchWithLength</span><span class="s">(</span><span class="i">$Length</span><span class="s">)</span><span class="sc">;</span>
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996 983 <span class="s">}</span>
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997 984 <span class="k">else</span> <span class="s">{</span>
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998 985 <span class="k">push</span> <span class="i">@</span>{<span class="i">$This</span>-&gt;{<span class="w">Paths</span>}}<span class="cm">,</span> <span class="i">$This</span><span class="i">-&gt;_CollectPathsTraversedDuringPathsSearch</span><span class="s">(</span><span class="s">)</span><span class="sc">;</span>
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999 986 <span class="s">}</span>
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1000 987
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1001 988 <span class="k">return</span> <span class="i">$This</span><span class="sc">;</span>
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1002 989 <span class="s">}</span>
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1003 990
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1004 991 <span class="c"># Traverse and collect all paths recuresively..</span>
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1005 992 <span class="c">#</span>
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1006 <a name="_TraverseAllPaths-"></a> 993 <span class="k">sub </span><span class="m">_TraverseAllPaths</span> <span class="s">{</span>
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1007 994 <span class="k">my</span><span class="s">(</span><span class="i">$This</span><span class="cm">,</span> <span class="i">$CurrentVertexID</span><span class="cm">,</span> <span class="i">$PredecessorVertexID</span><span class="cm">,</span> <span class="i">$CurrentDepth</span><span class="cm">,</span> <span class="i">$CurrentPath</span><span class="s">)</span> = <span class="i">@_</span><span class="sc">;</span>
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1008 995
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1009 996 <span class="c"># Save path traversed for current vertex..</span>
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1010 997 <span class="k">if</span> <span class="s">(</span>!<span class="k">exists</span> <span class="i">$This</span>-&gt;{<span class="w">VerticesPaths</span>}{<span class="i">$CurrentVertexID</span>}<span class="s">)</span> <span class="s">{</span>
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1011 998 <span class="i">@</span>{<span class="i">$This</span>-&gt;{<span class="w">VerticesPaths</span>}{<span class="i">$CurrentVertexID</span>}} = <span class="s">(</span><span class="s">)</span><span class="sc">;</span>
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1012 999 <span class="i">$This</span>-&gt;{<span class="w">VerticesDepth</span>}{<span class="i">$CurrentVertexID</span>} = <span class="n">0</span><span class="sc">;</span>
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1013 1000 <span class="s">}</span>
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1014 1001 <span class="k">push</span> <span class="i">@</span>{<span class="i">$This</span>-&gt;{<span class="w">VerticesPaths</span>}{<span class="i">$CurrentVertexID</span>}}<span class="cm">,</span> <span class="i">$CurrentPath</span><span class="sc">;</span>
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1015 1002 <span class="i">$This</span>-&gt;{<span class="w">VerticesDepth</span>}{<span class="i">$CurrentVertexID</span>} = <span class="i">$CurrentDepth</span><span class="sc">;</span>
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1016 1003
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1017 1004 <span class="i">$CurrentDepth</span>++<span class="sc">;</span>
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1018 1005 <span class="k">if</span> <span class="s">(</span><span class="k">exists</span> <span class="i">$This</span>-&gt;{<span class="w">DepthLimit</span>}<span class="s">)</span> <span class="s">{</span>
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1019 1006 <span class="k">if</span> <span class="s">(</span><span class="i">$CurrentDepth</span> &gt; <span class="i">$This</span>-&gt;{<span class="w">DepthLimit</span>}<span class="s">)</span> <span class="s">{</span>
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1020 1007 <span class="c"># Nothing more to do...</span>
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1021 1008 <span class="k">return</span> <span class="i">$This</span><span class="sc">;</span>
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1022 1009 <span class="s">}</span>
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1023 1010 <span class="s">}</span>
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1024 1011 <span class="k">my</span><span class="s">(</span><span class="i">$NeighborVertexID</span><span class="cm">,</span> <span class="i">$NewPath</span><span class="s">)</span><span class="sc">;</span>
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1025 1012
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1026 1013 <span class="j">NEIGHBOR:</span> <span class="k">for</span> <span class="i">$NeighborVertexID</span> <span class="s">(</span><span class="i">$This</span>-&gt;{<span class="w">Graph</span>}<span class="i">-&gt;GetNeighbors</span><span class="s">(</span><span class="i">$CurrentVertexID</span><span class="s">)</span><span class="s">)</span> <span class="s">{</span>
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1027 1014 <span class="k">if</span> <span class="s">(</span><span class="i">$NeighborVertexID</span> == <span class="i">$PredecessorVertexID</span><span class="s">)</span> <span class="s">{</span>
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1028 1015 <span class="k">next</span> <span class="j">NEIGHBOR</span><span class="sc">;</span>
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1029 1016 <span class="s">}</span>
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1030 1017 <span class="k">if</span> <span class="s">(</span><span class="i">$This</span><span class="i">-&gt;_IsVertexInTraversedPath</span><span class="s">(</span><span class="i">$NeighborVertexID</span><span class="cm">,</span> <span class="i">$CurrentPath</span><span class="s">)</span><span class="s">)</span> <span class="s">{</span>
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1031 1018 <span class="c"># It&#39;s a cycle...</span>
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1032 1019 <span class="k">if</span> <span class="s">(</span><span class="i">$This</span>-&gt;{<span class="w">AllowPathCycles</span>}<span class="s">)</span> <span class="s">{</span>
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1033 1020 <span class="i">$NewPath</span> = <span class="q">&quot;${CurrentPath}-${NeighborVertexID}&quot;</span><span class="sc">;</span>
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1034 1021 <span class="k">if</span> <span class="s">(</span>!<span class="k">exists</span> <span class="i">$This</span>-&gt;{<span class="w">VerticesPaths</span>}{<span class="i">$NeighborVertexID</span>}<span class="s">)</span> <span class="s">{</span>
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1035 1022 <span class="i">@</span>{<span class="i">$This</span>-&gt;{<span class="w">VerticesPaths</span>}{<span class="i">$NeighborVertexID</span>}} = <span class="s">(</span><span class="s">)</span><span class="sc">;</span>
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1036 1023 <span class="s">}</span>
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1037 1024 <span class="k">push</span> <span class="i">@</span>{<span class="i">$This</span>-&gt;{<span class="w">VerticesPaths</span>}{<span class="i">$NeighborVertexID</span>}}<span class="cm">,</span> <span class="i">$NewPath</span><span class="sc">;</span>
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1038 1025 <span class="s">}</span>
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1039 1026 <span class="k">next</span> <span class="j">NEIGHBOR</span><span class="sc">;</span>
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1040 1027 <span class="s">}</span>
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1041 1028 <span class="i">$NewPath</span> = <span class="q">&quot;${CurrentPath}-${NeighborVertexID}&quot;</span><span class="sc">;</span>
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1042 1029 <span class="i">$This</span><span class="i">-&gt;_TraverseAllPaths</span><span class="s">(</span><span class="i">$NeighborVertexID</span><span class="cm">,</span> <span class="i">$CurrentVertexID</span><span class="cm">,</span> <span class="i">$CurrentDepth</span><span class="cm">,</span> <span class="i">$NewPath</span><span class="s">)</span><span class="sc">;</span>
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1043 1030 <span class="s">}</span>
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1044 1031 <span class="k">return</span> <span class="i">$This</span><span class="sc">;</span>
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1045 1032 <span class="s">}</span>
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1046 1033
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1047 1034 <span class="c"># Is vertex already in traversed path?</span>
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1048 1035 <span class="c">#</span>
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1049 <a name="_IsVertexInTraversedPath-"></a>1036 <span class="k">sub </span><span class="m">_IsVertexInTraversedPath</span> <span class="s">{</span>
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1050 1037 <span class="k">my</span><span class="s">(</span><span class="i">$This</span><span class="cm">,</span> <span class="i">$VertexID</span><span class="cm">,</span> <span class="i">$Path</span><span class="s">)</span> = <span class="i">@_</span><span class="sc">;</span>
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1051 1038
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1052 1039 <span class="k">return</span> <span class="s">(</span><span class="i">$Path</span> =~ <span class="q">/-$VertexID-/</span> || <span class="i">$Path</span> =~ <span class="q">/^$VertexID-/</span> || <span class="i">$Path</span> =~ <span class="q">/-$VertexID$/</span><span class="s">)</span> ? <span class="n">1</span> <span class="co">:</span> <span class="n">0</span><span class="sc">;</span>
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1053 1040 <span class="s">}</span>
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1054 1041
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1055 1042 <span class="c"># Collect all paths traversed during Path TraversalMode and sort &#39;em in</span>
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diff changeset
1056 1043 <span class="c"># ascending order of lengths</span>
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1057 1044 <span class="c">#</span>
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1058 <a name="_CollectPathsTraversedDuringPathsSearch-"></a>1045 <span class="k">sub </span><span class="m">_CollectPathsTraversedDuringPathsSearch</span> <span class="s">{</span>
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1059 1046 <span class="k">my</span><span class="s">(</span><span class="i">$This</span><span class="s">)</span> = <span class="i">@_</span><span class="sc">;</span>
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1060 1047 <span class="k">my</span><span class="s">(</span><span class="i">$VertexID</span><span class="cm">,</span> <span class="i">@Paths</span><span class="cm">,</span> <span class="i">@SortedPaths</span><span class="s">)</span><span class="sc">;</span>
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1061 1048
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1062 1049 <span class="i">@Paths</span> = <span class="s">(</span><span class="s">)</span><span class="sc">;</span> <span class="i">@SortedPaths</span> = <span class="s">(</span><span class="s">)</span><span class="sc">;</span>
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1063 1050
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1064 1051 <span class="c"># Create path objects from path vertex strings...</span>
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1065 1052 <span class="k">for</span> <span class="i">$VertexID</span> <span class="s">(</span><span class="k">keys</span> <span class="i">%</span>{<span class="i">$This</span>-&gt;{<span class="w">VerticesPaths</span>}}<span class="s">)</span> <span class="s">{</span>
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1066 1053 <span class="k">push</span> <span class="i">@Paths</span><span class="cm">,</span> <span class="k">map</span> <span class="s">{</span> <span class="i">new</span> <span class="i">Graph::Path</span><span class="s">(</span><span class="k">split</span> <span class="q">/-/</span><span class="cm">,</span> <span class="i">$_</span><span class="s">)</span> <span class="s">}</span> <span class="i">@</span>{<span class="i">$This</span>-&gt;{<span class="w">VerticesPaths</span>}{<span class="i">$VertexID</span>}}<span class="sc">;</span>
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1067 1054 <span class="s">}</span>
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1068 1055
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1069 1056 <span class="c"># Sort paths in ascending order of lengths...</span>
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1070 1057 <span class="k">push</span> <span class="i">@SortedPaths</span><span class="cm">,</span> <span class="k">sort</span> <span class="s">{</span> <span class="i">$a</span><span class="i">-&gt;GetLength</span><span class="s">(</span><span class="s">)</span> &lt;=&gt; <span class="i">$b</span><span class="i">-&gt;GetLength</span><span class="s">(</span><span class="s">)</span> <span class="s">}</span> <span class="i">@Paths</span><span class="sc">;</span>
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1071 1058
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1072 1059 <span class="k">return</span> <span class="i">@SortedPaths</span><span class="sc">;</span>
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1073 1060 <span class="s">}</span>
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1074 1061
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1075 1062 <span class="c"># Collect paths traversed during Path TraversalMode with specific length...</span>
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diff changeset
1076 1063 <span class="c">#</span>
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1077 <a name="_CollectPathsTraversedDuringPathsSearchWithLength-"></a>1064 <span class="k">sub </span><span class="m">_CollectPathsTraversedDuringPathsSearchWithLength</span> <span class="s">{</span>
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1078 1065 <span class="k">my</span><span class="s">(</span><span class="i">$This</span><span class="cm">,</span> <span class="i">$Length</span><span class="s">)</span> = <span class="i">@_</span><span class="sc">;</span>
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1079 1066 <span class="k">my</span><span class="s">(</span><span class="i">$VertexID</span><span class="cm">,</span> <span class="i">$Depth</span><span class="cm">,</span> <span class="i">$PathString</span><span class="cm">,</span> <span class="i">@VertexIDs</span><span class="cm">,</span> <span class="i">@Paths</span><span class="s">)</span><span class="sc">;</span>
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1080 1067
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1081 1068 <span class="i">@Paths</span> = <span class="s">(</span><span class="s">)</span><span class="sc">;</span>
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1082 1069 <span class="i">$Depth</span> = <span class="i">$Length</span> - <span class="n">1</span><span class="sc">;</span>
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1083 1070
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1084 1071 <span class="c"># Create path objects from path vertex strings...</span>
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1085 1072 <span class="j">VERTEXID:</span> <span class="k">for</span> <span class="i">$VertexID</span> <span class="s">(</span><span class="k">keys</span> <span class="i">%</span>{<span class="i">$This</span>-&gt;{<span class="w">VerticesPaths</span>}}<span class="s">)</span> <span class="s">{</span>
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1086 1073 <span class="k">if</span> <span class="s">(</span><span class="i">$This</span>-&gt;{<span class="w">VerticesDepth</span>}{<span class="i">$VertexID</span>} != <span class="i">$Depth</span><span class="s">)</span> <span class="s">{</span>
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1087 1074 <span class="k">next</span> <span class="j">VERTEXID</span><span class="sc">;</span>
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diff changeset
1088 1075 <span class="s">}</span>
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1089 1076 <span class="c"># For vertices involved in cycles, the path might also contain some shorter paths. So check</span>
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1090 1077 <span class="c"># the lengths before its collection...</span>
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1091 1078 <span class="j">PATHSTRING:</span> <span class="k">for</span> <span class="i">$PathString</span> <span class="s">(</span><span class="i">@</span>{<span class="i">$This</span>-&gt;{<span class="w">VerticesPaths</span>}{<span class="i">$VertexID</span>}}<span class="s">)</span> <span class="s">{</span>
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1092 1079 <span class="i">@VertexIDs</span> = <span class="k">split</span> <span class="q">/-/</span><span class="cm">,</span> <span class="i">$PathString</span><span class="sc">;</span>
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1093 1080 <span class="k">if</span> <span class="s">(</span><span class="i">$Length</span> != <span class="i">@VertexIDs</span><span class="s">)</span> <span class="s">{</span>
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1094 1081 <span class="k">next</span> <span class="j">PATHSTRING</span><span class="sc">;</span>
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1095 1082 <span class="s">}</span>
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1096 1083 <span class="k">push</span> <span class="i">@Paths</span><span class="cm">,</span> <span class="i">new</span> <span class="i">Graph::Path</span><span class="s">(</span><span class="i">@VertexIDs</span><span class="s">)</span><span class="sc">;</span>
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1097 1084 <span class="s">}</span>
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1098 1085 <span class="s">}</span>
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1099 1086 <span class="k">return</span> <span class="i">@Paths</span><span class="sc">;</span>
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1100 1087 <span class="s">}</span>
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1101 1088
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1102 1089 <span class="c"># Collect paths traversed during Vertex TraversalMode...</span>
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1103 1090 <span class="c">#</span>
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1104 <a name="_CollectPathsTraversedDuringVertexSearch-"></a>1091 <span class="k">sub </span><span class="m">_CollectPathsTraversedDuringVertexSearch</span> <span class="s">{</span>
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1105 1092 <span class="k">my</span><span class="s">(</span><span class="i">$This</span><span class="cm">,</span> <span class="i">$RootVertexID</span><span class="s">)</span> = <span class="i">@_</span><span class="sc">;</span>
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1106 1093 <span class="k">my</span><span class="s">(</span><span class="i">$Depth</span><span class="cm">,</span> <span class="i">@Paths</span><span class="cm">,</span> <span class="i">@VerticesAtDepth</span><span class="s">)</span><span class="sc">;</span>
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1107 1094 <span class="i">@Paths</span> = <span class="s">(</span><span class="s">)</span><span class="sc">;</span>
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1108 1095
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1109 1096 <span class="c"># Get vertices at specific depths...</span>
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1110 1097 <span class="i">@VerticesAtDepth</span> = <span class="s">(</span><span class="s">)</span><span class="sc">;</span>
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1111 1098 <span class="i">@VerticesAtDepth</span> = <span class="i">$This</span><span class="i">-&gt;_CollectVerticesAtSpecificDepths</span><span class="s">(</span><span class="s">)</span><span class="sc">;</span>
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1112 1099 <span class="k">if</span> <span class="s">(</span>!<span class="i">@VerticesAtDepth</span><span class="s">)</span> <span class="s">{</span>
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1113 1100 <span class="k">return</span> <span class="i">@Paths</span><span class="sc">;</span>
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1114 1101 <span class="s">}</span>
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1115 1102
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1116 1103 <span class="c"># Make sure search found only one root vertex and it corresponds to</span>
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1117 1104 <span class="c"># what was specified...</span>
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1118 1105 <span class="i">$Depth</span> = <span class="n">0</span><span class="sc">;</span>
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1119 1106 <span class="k">if</span> <span class="s">(</span><span class="s">(</span><span class="i">@</span>{<span class="i">$VerticesAtDepth</span>[<span class="i">$Depth</span>]} &gt; <span class="n">1</span><span class="s">)</span> || <span class="s">(</span><span class="i">$VerticesAtDepth</span>[<span class="i">$Depth</span>][<span class="n">0</span>] != <span class="i">$RootVertexID</span><span class="s">)</span><span class="s">)</span> <span class="s">{</span>
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1120 1107 <span class="w">carp</span> <span class="q">&quot;Warning: ${ClassName}-&gt;_PerformPathsSearch: No paths found: Root vertex, $VerticesAtDepth[$Depth][0], identified by paths traversal doen&#39;t match specified root vertex $RootVertexID...&quot;</span><span class="sc">;</span>
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1121 1108 <span class="k">return</span> <span class="i">@Paths</span><span class="sc">;</span>
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1122 1109 <span class="s">}</span>
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1123 1110
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1124 1111 <span class="c"># Setup root vertex at depth 0. And set its path...</span>
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1125 1112 <span class="k">my</span><span class="s">(</span><span class="i">$Path</span><span class="cm">,</span> <span class="i">$VertexID</span><span class="cm">,</span> <span class="i">$SuccessorVertexID</span><span class="cm">,</span> <span class="i">@VertexIDs</span><span class="cm">,</span> <span class="i">%PathAtVertex</span><span class="s">)</span><span class="sc">;</span>
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1126 1113 <span class="i">%PathAtVertex</span> = <span class="s">(</span><span class="s">)</span><span class="sc">;</span>
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1127 1114 <span class="i">$PathAtVertex</span>{<span class="i">$RootVertexID</span>} = <span class="i">new</span> <span class="i">Graph::Path</span><span class="s">(</span><span class="i">$RootVertexID</span><span class="s">)</span><span class="sc">;</span>
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1128 1115
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1129 1116 <span class="k">for</span> <span class="i">$Depth</span> <span class="s">(</span><span class="n">0</span> .. <span class="i">$#VerticesAtDepth</span><span class="s">)</span> <span class="s">{</span>
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1130 1117 <span class="c"># Go over all vertices at current depth...</span>
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1131 1118 <span class="j">VERTEX:</span> <span class="k">for</span> <span class="i">$VertexID</span> <span class="s">(</span><span class="i">@</span>{<span class="i">$VerticesAtDepth</span>[<span class="i">$Depth</span>]}<span class="s">)</span> <span class="s">{</span>
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1132 1119 <span class="k">if</span> <span class="s">(</span>!<span class="k">exists</span> <span class="i">$This</span>-&gt;{<span class="w">VerticesSuccessors</span>}{<span class="i">$VertexID</span>}<span class="s">)</span> <span class="s">{</span>
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1133 1120 <span class="k">next</span> <span class="j">VERTEX</span><span class="sc">;</span>
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1134 1121 <span class="s">}</span>
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1135 1122 <span class="c"># Get vertices for current path...</span>
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1136 1123 <span class="i">@VertexIDs</span> = <span class="s">(</span><span class="s">)</span><span class="sc">;</span>
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1137 1124 <span class="k">push</span> <span class="i">@VertexIDs</span><span class="cm">,</span> <span class="i">$PathAtVertex</span>{<span class="i">$VertexID</span>}<span class="i">-&gt;GetVertices</span><span class="sc">;</span>
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1138 1125
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1139 1126 <span class="c"># Expand path to successor vertex found during traversal...</span>
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1140 1127 <span class="k">for</span> <span class="i">$SuccessorVertexID</span> <span class="s">(</span><span class="i">@</span>{<span class="i">$This</span>-&gt;{<span class="w">VerticesSuccessors</span>}{<span class="i">$VertexID</span>}}<span class="s">)</span> <span class="s">{</span>
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1141 1128 <span class="i">$Path</span> = <span class="i">new</span> <span class="i">Graph::Path</span><span class="s">(</span><span class="i">@VertexIDs</span><span class="s">)</span><span class="sc">;</span>
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1142 1129 <span class="i">$Path</span><span class="i">-&gt;AddVertex</span><span class="s">(</span><span class="i">$SuccessorVertexID</span><span class="s">)</span><span class="sc">;</span>
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1143 1130 <span class="i">$PathAtVertex</span>{<span class="i">$SuccessorVertexID</span>} = <span class="i">$Path</span><span class="sc">;</span>
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1144 1131 <span class="s">}</span>
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1145 1132 <span class="s">}</span>
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1146 1133 <span class="s">}</span>
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1147 1134 <span class="c"># Sort paths in ascending order of lengths...</span>
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1148 1135 <span class="k">push</span> <span class="i">@Paths</span><span class="cm">,</span> <span class="k">sort</span> <span class="s">{</span> <span class="i">$a</span><span class="i">-&gt;GetLength</span><span class="s">(</span><span class="s">)</span> &lt;=&gt; <span class="i">$b</span><span class="i">-&gt;GetLength</span><span class="s">(</span><span class="s">)</span> <span class="s">}</span> <span class="k">values</span> <span class="i">%PathAtVertex</span><span class="sc">;</span>
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1149 1136
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1150 1137 <span class="k">return</span> <span class="i">@Paths</span><span class="sc">;</span>
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1151 1138 <span class="s">}</span>
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1152 1139
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1153 1140 <span class="c"># Collect vertices at specific depths. Depth values start from 0...</span>
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1154 1141 <span class="c">#</span>
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1155 <a name="_CollectVerticesAtSpecificDepths-"></a>1142 <span class="k">sub </span><span class="m">_CollectVerticesAtSpecificDepths</span> <span class="s">{</span>
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1156 1143 <span class="k">my</span><span class="s">(</span><span class="i">$This</span><span class="s">)</span> = <span class="i">@_</span><span class="sc">;</span>
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1157 1144 <span class="k">my</span><span class="s">(</span><span class="i">$VertexID</span><span class="cm">,</span> <span class="i">$Depth</span><span class="cm">,</span> <span class="i">@VerticesAtDepth</span><span class="s">)</span><span class="sc">;</span>
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1158 1145
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1159 1146 <span class="i">@VerticesAtDepth</span> = <span class="s">(</span><span class="s">)</span><span class="sc">;</span>
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1160 1147 <span class="k">while</span> <span class="s">(</span><span class="s">(</span><span class="i">$VertexID</span><span class="cm">,</span> <span class="i">$Depth</span><span class="s">)</span> = <span class="k">each</span> <span class="i">%</span>{<span class="i">$This</span>-&gt;{<span class="w">VerticesDepth</span>}}<span class="s">)</span> <span class="s">{</span>
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1161 1148 <span class="k">push</span> <span class="i">@</span>{<span class="i">$VerticesAtDepth</span>[<span class="i">$Depth</span>]}<span class="cm">,</span> <span class="i">$VertexID</span><span class="sc">;</span>
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1162 1149 <span class="s">}</span>
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1163 1150 <span class="k">return</span> <span class="i">@VerticesAtDepth</span><span class="sc">;</span>
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diff changeset
1164 1151 <span class="s">}</span>
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diff changeset
1165 1152
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1166 1153 <span class="c"># Collect vertices, along with their successors, at specific depths and return a list containing references to</span>
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1167 1154 <span class="c"># lists with first value corresponding to vertex ID and second value a reference to a list containing</span>
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1168 1155 <span class="c"># its successors.</span>
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1169 1156 <span class="c">#</span>
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1170 1157 <span class="c"># Depth values start from 0...</span>
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1171 1158 <span class="c">#</span>
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1172 <a name="_CollectVerticesWithSuccessorsAtSpecificDepths-"></a>1159 <span class="k">sub </span><span class="m">_CollectVerticesWithSuccessorsAtSpecificDepths</span> <span class="s">{</span>
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1173 1160 <span class="k">my</span><span class="s">(</span><span class="i">$This</span><span class="s">)</span> = <span class="i">@_</span><span class="sc">;</span>
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1174 1161 <span class="k">my</span><span class="s">(</span><span class="i">$VertexID</span><span class="cm">,</span> <span class="i">$Depth</span><span class="cm">,</span> <span class="i">@VerticesWithSuccessorsAtDepth</span><span class="s">)</span><span class="sc">;</span>
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1175 1162
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1176 1163 <span class="i">@VerticesWithSuccessorsAtDepth</span> = <span class="s">(</span><span class="s">)</span><span class="sc">;</span>
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1177 1164 <span class="k">while</span> <span class="s">(</span><span class="s">(</span><span class="i">$VertexID</span><span class="cm">,</span> <span class="i">$Depth</span><span class="s">)</span> = <span class="k">each</span> <span class="i">%</span>{<span class="i">$This</span>-&gt;{<span class="w">VerticesDepth</span>}}<span class="s">)</span> <span class="s">{</span>
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1178 1165 <span class="k">my</span><span class="s">(</span><span class="i">@VertexWithSuccessors</span><span class="cm">,</span> <span class="i">@VertexSuccessors</span><span class="s">)</span><span class="sc">;</span>
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1179 1166
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1180 1167 <span class="i">@VertexWithSuccessors</span> = <span class="s">(</span><span class="s">)</span><span class="sc">;</span> <span class="i">@VertexSuccessors</span> = <span class="s">(</span><span class="s">)</span><span class="sc">;</span>
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1181 1168 <span class="k">if</span> <span class="s">(</span><span class="k">exists</span> <span class="i">$This</span>-&gt;{<span class="w">VerticesSuccessors</span>}{<span class="i">$VertexID</span>}<span class="s">)</span> <span class="s">{</span>
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1182 1169 <span class="k">push</span> <span class="i">@VertexSuccessors</span><span class="cm">,</span> <span class="i">@</span>{<span class="i">$This</span>-&gt;{<span class="w">VerticesSuccessors</span>}{<span class="i">$VertexID</span>}}<span class="sc">;</span>
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1183 1170 <span class="s">}</span>
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1184 1171 <span class="k">push</span> <span class="i">@VertexWithSuccessors</span><span class="cm">,</span> <span class="s">(</span><span class="i">$VertexID</span><span class="cm">,</span> \<span class="i">@VertexSuccessors</span><span class="s">)</span><span class="sc">;</span>
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1185 1172 <span class="c"># Multiple entries for a vertex and its successors could be present at a specific depth...</span>
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1186 1173 <span class="k">push</span> <span class="i">@</span>{<span class="i">$VerticesWithSuccessorsAtDepth</span>[<span class="i">$Depth</span>]}<span class="cm">,</span> \<span class="i">@VertexWithSuccessors</span><span class="sc">;</span>
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1187 1174 <span class="s">}</span>
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1188 1175 <span class="k">return</span> <span class="i">@VerticesWithSuccessorsAtDepth</span><span class="sc">;</span>
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1189 1176 <span class="s">}</span>
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1190 1177
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1191 1178 <span class="c"># Search paths between two vertices...</span>
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1192 1179 <span class="c">#</span>
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1193 <a name="_PerformPathsSearchBetween-"></a>1180 <span class="k">sub </span><span class="m">_PerformPathsSearchBetween</span> <span class="s">{</span>
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1194 1181 <span class="k">my</span><span class="s">(</span><span class="i">$This</span><span class="cm">,</span> <span class="i">$RootVertexID</span><span class="cm">,</span> <span class="i">$TargetVertexID</span><span class="s">)</span> = <span class="i">@_</span><span class="sc">;</span>
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1195 1182 <span class="k">my</span><span class="s">(</span><span class="i">$DepthLimit</span><span class="s">)</span><span class="sc">;</span>
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1196 1183
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1197 1184 <span class="c"># Perform a targeted DFS search...</span>
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1198 1185 <span class="i">$DepthLimit</span> = <span class="k">undef</span><span class="sc">;</span>
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1199 1186 <span class="i">$This</span><span class="i">-&gt;_PerformVertexSearch</span><span class="s">(</span><span class="q">&quot;DFS&quot;</span><span class="cm">,</span> <span class="i">$RootVertexID</span><span class="cm">,</span> <span class="i">$DepthLimit</span><span class="cm">,</span> <span class="i">$TargetVertexID</span><span class="s">)</span><span class="sc">;</span>
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1200 1187
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1201 1188 <span class="k">my</span><span class="s">(</span><span class="i">$Path</span><span class="s">)</span><span class="sc">;</span>
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1202 1189 <span class="i">$Path</span> = <span class="i">$This</span><span class="i">-&gt;_CollectPathBetween</span><span class="s">(</span><span class="i">$RootVertexID</span><span class="cm">,</span> <span class="i">$TargetVertexID</span><span class="s">)</span><span class="sc">;</span>
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1203 1190
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1204 1191 <span class="k">if</span> <span class="s">(</span><span class="k">defined</span> <span class="i">$Path</span><span class="s">)</span> <span class="s">{</span>
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1205 1192 <span class="k">push</span> <span class="i">@</span>{<span class="i">$This</span>-&gt;{<span class="w">Paths</span>}}<span class="cm">,</span> <span class="i">$Path</span><span class="sc">;</span>
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1206 1193 <span class="s">}</span>
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1207 1194 <span class="k">return</span> <span class="i">$This</span><span class="sc">;</span>
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parents:
diff changeset
1208 1195 <span class="s">}</span>
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parents:
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1209 1196
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parents:
diff changeset
1210 1197 <span class="c"># Collect path between root and target vertex after the search...</span>
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parents:
diff changeset
1211 1198 <span class="c">#</span>
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parents:
diff changeset
1212 <a name="_CollectPathBetween-"></a>1199 <span class="k">sub </span><span class="m">_CollectPathBetween</span> <span class="s">{</span>
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parents:
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1213 1200 <span class="k">my</span><span class="s">(</span><span class="i">$This</span><span class="cm">,</span> <span class="i">$RootVertexID</span><span class="cm">,</span> <span class="i">$TargetVertexID</span><span class="s">)</span> = <span class="i">@_</span><span class="sc">;</span>
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parents:
diff changeset
1214 1201
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parents:
diff changeset
1215 1202 <span class="c"># Does a path from root to target vertex exist?</span>
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parents:
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1216 1203 <span class="k">if</span> <span class="s">(</span>!<span class="s">(</span><span class="k">exists</span><span class="s">(</span><span class="i">$This</span>-&gt;{<span class="w">VerticesRoots</span>}{<span class="i">$TargetVertexID</span>}<span class="s">)</span> &amp;&amp; <span class="s">(</span><span class="i">$This</span>-&gt;{<span class="w">VerticesRoots</span>}{<span class="i">$TargetVertexID</span>} == <span class="i">$RootVertexID</span><span class="s">)</span><span class="s">)</span><span class="s">)</span> <span class="s">{</span>
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parents:
diff changeset
1217 1204 <span class="k">return</span> <span class="k">undef</span><span class="sc">;</span>
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parents:
diff changeset
1218 1205 <span class="s">}</span>
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parents:
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1219 1206
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parents:
diff changeset
1220 1207 <span class="c"># Add target vertex ID path vertices...</span>
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parents:
diff changeset
1221 1208 <span class="k">my</span><span class="s">(</span><span class="i">$VertexID</span><span class="cm">,</span> <span class="i">$Path</span><span class="cm">,</span> <span class="i">@VertexIDs</span><span class="s">)</span><span class="sc">;</span>
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parents:
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1222 1209 <span class="i">@VertexIDs</span> = <span class="s">(</span><span class="s">)</span><span class="sc">;</span>
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parents:
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1223 1210 <span class="i">$VertexID</span> = <span class="i">$TargetVertexID</span><span class="sc">;</span>
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parents:
diff changeset
1224 1211 <span class="k">push</span> <span class="i">@VertexIDs</span><span class="cm">,</span> <span class="i">$VertexID</span><span class="sc">;</span>
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parents:
diff changeset
1225 1212
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diff changeset
1226 1213 <span class="c"># Backtrack to root vertex ID...</span>
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parents:
diff changeset
1227 1214 <span class="k">while</span> <span class="s">(</span><span class="i">$This</span>-&gt;{<span class="w">VerticesPredecessors</span>}{<span class="i">$VertexID</span>} != <span class="i">$VertexID</span><span class="s">)</span> <span class="s">{</span>
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parents:
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1228 1215 <span class="i">$VertexID</span> = <span class="i">$This</span>-&gt;{<span class="w">VerticesPredecessors</span>}{<span class="i">$VertexID</span>}<span class="sc">;</span>
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parents:
diff changeset
1229 1216 <span class="k">push</span> <span class="i">@VertexIDs</span><span class="cm">,</span> <span class="i">$VertexID</span><span class="sc">;</span>
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parents:
diff changeset
1230 1217 <span class="s">}</span>
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parents:
diff changeset
1231 1218
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parents:
diff changeset
1232 1219 <span class="c"># Create path from target to root and reverse it...</span>
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parents:
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1233 1220 <span class="i">$Path</span> = <span class="i">new</span> <span class="i">Graph::Path</span><span class="s">(</span><span class="i">@VertexIDs</span><span class="s">)</span><span class="sc">;</span>
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1234 1221 <span class="i">$Path</span><span class="i">-&gt;Reverse</span><span class="s">(</span><span class="s">)</span><span class="sc">;</span>
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1235 1222
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1236 1223 <span class="k">return</span> <span class="i">$Path</span><span class="sc">;</span>
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parents:
diff changeset
1237 1224 <span class="s">}</span>
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parents:
diff changeset
1238 1225
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diff changeset
1239 1226 <span class="c"># Search vertices around specified root vertex with in specific neighborhood radius...</span>
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parents:
diff changeset
1240 1227 <span class="c">#</span>
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parents:
diff changeset
1241 <a name="PerformNeighborhoodVerticesSearchWithRadiusUpto-"></a>1228 <span class="k">sub </span><span class="m">PerformNeighborhoodVerticesSearchWithRadiusUpto</span> <span class="s">{</span>
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parents:
diff changeset
1242 1229 <span class="k">my</span><span class="s">(</span><span class="i">$This</span><span class="cm">,</span> <span class="i">$StartVertexID</span><span class="cm">,</span> <span class="i">$Radius</span><span class="s">)</span> = <span class="i">@_</span><span class="sc">;</span>
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parents:
diff changeset
1243 1230
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diff changeset
1244 1231 <span class="c"># Make sure both start vertex and radius are defined...</span>
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parents:
diff changeset
1245 1232 <span class="k">if</span> <span class="s">(</span>!<span class="k">defined</span> <span class="i">$StartVertexID</span><span class="s">)</span> <span class="s">{</span>
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parents:
diff changeset
1246 1233 <span class="w">carp</span> <span class="q">&quot;Warning: ${ClassName}-&gt;PerformNeighborhoodVerticesSearchWithRadiusUpto: No vertices search performed: Start vertex must be specified...&quot;</span><span class="sc">;</span>
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parents:
diff changeset
1247 1234 <span class="k">return</span> <span class="k">undef</span><span class="sc">;</span>
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parents:
diff changeset
1248 1235 <span class="s">}</span>
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parents:
diff changeset
1249 1236 <span class="k">if</span> <span class="s">(</span>!<span class="k">defined</span> <span class="i">$Radius</span><span class="s">)</span> <span class="s">{</span>
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parents:
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1250 1237 <span class="w">carp</span> <span class="q">&quot;Warning: ${ClassName}-&gt;PerformNeighborhoodVerticesSearchWithRadiusUpto: No vertices search performed: Radius must be specified...&quot;</span><span class="sc">;</span>
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parents:
diff changeset
1251 1238 <span class="k">return</span> <span class="k">undef</span><span class="sc">;</span>
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parents:
diff changeset
1252 1239 <span class="s">}</span>
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parents:
diff changeset
1253 1240
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diff changeset
1254 1241 <span class="c"># Make sure both start vertex and length are valid...</span>
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parents:
diff changeset
1255 1242 <span class="k">if</span> <span class="s">(</span>!<span class="i">$This</span>-&gt;{<span class="w">Graph</span>}<span class="i">-&gt;HasVertex</span><span class="s">(</span><span class="i">$StartVertexID</span><span class="s">)</span><span class="s">)</span> <span class="s">{</span>
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parents:
diff changeset
1256 1243 <span class="w">carp</span> <span class="q">&quot;Warning: ${ClassName}-&gt;PerformNeighborhoodVerticesSearchWithRadiusUpto: No vertices search performed: Vertex $StartVertexID doesn&#39;t exist...&quot;</span><span class="sc">;</span>
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parents:
diff changeset
1257 1244 <span class="k">return</span> <span class="k">undef</span><span class="sc">;</span>
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parents:
diff changeset
1258 1245 <span class="s">}</span>
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parents:
diff changeset
1259 1246 <span class="k">if</span> <span class="s">(</span><span class="i">$Radius</span> &lt; <span class="n">0</span><span class="s">)</span> <span class="s">{</span>
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parents:
diff changeset
1260 1247 <span class="w">carp</span> <span class="q">&quot;Warning: ${ClassName}-&gt;PerformNeighborhoodVerticesSearchWithRadiusUpto: No vertices search performed: Specified radius, $Radius, must be a positive integer...&quot;</span><span class="sc">;</span>
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parents:
diff changeset
1261 1248 <span class="k">return</span> <span class="k">undef</span><span class="sc">;</span>
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parents:
diff changeset
1262 1249 <span class="s">}</span>
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diff changeset
1263 1250
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diff changeset
1264 1251 <span class="c"># Perform vertices search...</span>
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parents:
diff changeset
1265 1252 <span class="k">return</span> <span class="i">$This</span><span class="i">-&gt;_PerformNeighborhoodVerticesSearch</span><span class="s">(</span><span class="q">&quot;RadiusUpto&quot;</span><span class="cm">,</span> <span class="i">$StartVertexID</span><span class="cm">,</span> <span class="i">$Radius</span><span class="s">)</span><span class="sc">;</span>
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parents:
diff changeset
1266 1253 <span class="s">}</span>
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parents:
diff changeset
1267 1254
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parents:
diff changeset
1268 1255 <span class="c"># Search vertices around specified root vertex...</span>
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parents:
diff changeset
1269 1256 <span class="c">#</span>
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parents:
diff changeset
1270 <a name="PerformNeighborhoodVerticesSearch-"></a>1257 <span class="k">sub </span><span class="m">PerformNeighborhoodVerticesSearch</span> <span class="s">{</span>
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parents:
diff changeset
1271 1258 <span class="k">my</span><span class="s">(</span><span class="i">$This</span><span class="cm">,</span> <span class="i">$StartVertexID</span><span class="s">)</span> = <span class="i">@_</span><span class="sc">;</span>
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parents:
diff changeset
1272 1259
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diff changeset
1273 1260 <span class="c"># Make sure start vertex is defined...</span>
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parents:
diff changeset
1274 1261 <span class="k">if</span> <span class="s">(</span>!<span class="k">defined</span> <span class="i">$StartVertexID</span><span class="s">)</span> <span class="s">{</span>
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parents:
diff changeset
1275 1262 <span class="w">carp</span> <span class="q">&quot;Warning: ${ClassName}-&gt;PerformNeighborhoodVerticesSearch: No vertices search performed: Start vertex must be specified...&quot;</span><span class="sc">;</span>
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parents:
diff changeset
1276 1263 <span class="k">return</span> <span class="k">undef</span><span class="sc">;</span>
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parents:
diff changeset
1277 1264 <span class="s">}</span>
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diff changeset
1278 1265
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diff changeset
1279 1266 <span class="c"># Make sure start vertex is valid...</span>
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parents:
diff changeset
1280 1267 <span class="k">if</span> <span class="s">(</span>!<span class="i">$This</span>-&gt;{<span class="w">Graph</span>}<span class="i">-&gt;HasVertex</span><span class="s">(</span><span class="i">$StartVertexID</span><span class="s">)</span><span class="s">)</span> <span class="s">{</span>
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parents:
diff changeset
1281 1268 <span class="w">carp</span> <span class="q">&quot;Warning: ${ClassName}-&gt;PerformNeighborhoodVerticesSearch: No vertices search performed: Vertex $StartVertexID doesn&#39;t exist...&quot;</span><span class="sc">;</span>
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parents:
diff changeset
1282 1269 <span class="k">return</span> <span class="k">undef</span><span class="sc">;</span>
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deepakjadmin
parents:
diff changeset
1283 1270 <span class="s">}</span>
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parents:
diff changeset
1284 1271 <span class="c"># Perform vertices search...</span>
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parents:
diff changeset
1285 1272 <span class="k">return</span> <span class="i">$This</span><span class="i">-&gt;_PerformNeighborhoodVerticesSearch</span><span class="s">(</span><span class="q">&quot;AllRadii&quot;</span><span class="cm">,</span> <span class="i">$StartVertexID</span><span class="s">)</span><span class="sc">;</span>
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parents:
diff changeset
1286 1273 <span class="s">}</span>
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parents:
diff changeset
1287 1274
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parents:
diff changeset
1288 1275 <span class="c"># Search vertices around specified root vertex with in specific neighborhood radius along with</span>
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parents:
diff changeset
1289 1276 <span class="c"># identification of successors of each vertex found during the search...</span>
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parents:
diff changeset
1290 1277 <span class="c">#</span>
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parents:
diff changeset
1291 <a name="PerformNeighborhoodVerticesSearchWithSuccessorsAndRadiusUpto-"></a>1278 <span class="k">sub </span><span class="m">PerformNeighborhoodVerticesSearchWithSuccessorsAndRadiusUpto</span> <span class="s">{</span>
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parents:
diff changeset
1292 1279 <span class="k">my</span><span class="s">(</span><span class="i">$This</span><span class="cm">,</span> <span class="i">$StartVertexID</span><span class="cm">,</span> <span class="i">$Radius</span><span class="s">)</span> = <span class="i">@_</span><span class="sc">;</span>
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parents:
diff changeset
1293 1280
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parents:
diff changeset
1294 1281 <span class="c"># Make sure both start vertex and radius are defined...</span>
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parents:
diff changeset
1295 1282 <span class="k">if</span> <span class="s">(</span>!<span class="k">defined</span> <span class="i">$StartVertexID</span><span class="s">)</span> <span class="s">{</span>
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parents:
diff changeset
1296 1283 <span class="w">carp</span> <span class="q">&quot;Warning: ${ClassName}-&gt;PerformNeighborhoodVerticesSearchWithSuccessorsAndRadiusUpto: No vertices search performed: Start vertex must be specified...&quot;</span><span class="sc">;</span>
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parents:
diff changeset
1297 1284 <span class="k">return</span> <span class="k">undef</span><span class="sc">;</span>
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parents:
diff changeset
1298 1285 <span class="s">}</span>
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parents:
diff changeset
1299 1286 <span class="k">if</span> <span class="s">(</span>!<span class="k">defined</span> <span class="i">$Radius</span><span class="s">)</span> <span class="s">{</span>
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parents:
diff changeset
1300 1287 <span class="w">carp</span> <span class="q">&quot;Warning: ${ClassName}-&gt;PerformNeighborhoodVerticesSearchWithSuccessorsAndRadiusUpto: No vertices search performed: Radius must be specified...&quot;</span><span class="sc">;</span>
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parents:
diff changeset
1301 1288 <span class="k">return</span> <span class="k">undef</span><span class="sc">;</span>
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parents:
diff changeset
1302 1289 <span class="s">}</span>
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parents:
diff changeset
1303 1290
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parents:
diff changeset
1304 1291 <span class="c"># Make sure both start vertex and length are valid...</span>
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parents:
diff changeset
1305 1292 <span class="k">if</span> <span class="s">(</span>!<span class="i">$This</span>-&gt;{<span class="w">Graph</span>}<span class="i">-&gt;HasVertex</span><span class="s">(</span><span class="i">$StartVertexID</span><span class="s">)</span><span class="s">)</span> <span class="s">{</span>
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parents:
diff changeset
1306 1293 <span class="w">carp</span> <span class="q">&quot;Warning: ${ClassName}-&gt;PerformNeighborhoodVerticesSearchWithSuccessorsAndRadiusUpto: No vertices search performed: Vertex $StartVertexID doesn&#39;t exist...&quot;</span><span class="sc">;</span>
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parents:
diff changeset
1307 1294 <span class="k">return</span> <span class="k">undef</span><span class="sc">;</span>
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parents:
diff changeset
1308 1295 <span class="s">}</span>
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parents:
diff changeset
1309 1296 <span class="k">if</span> <span class="s">(</span><span class="i">$Radius</span> &lt; <span class="n">0</span><span class="s">)</span> <span class="s">{</span>
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parents:
diff changeset
1310 1297 <span class="w">carp</span> <span class="q">&quot;Warning: ${ClassName}-&gt;PerformNeighborhoodVerticesSearchWithSuccessorsAndRadiusUpto: No vertices search performed: Specified radius, $Radius, must be a positive integer...&quot;</span><span class="sc">;</span>
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parents:
diff changeset
1311 1298 <span class="k">return</span> <span class="k">undef</span><span class="sc">;</span>
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parents:
diff changeset
1312 1299 <span class="s">}</span>
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diff changeset
1313 1300
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parents:
diff changeset
1314 1301 <span class="c"># Perform vertices search...</span>
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parents:
diff changeset
1315 1302 <span class="k">return</span> <span class="i">$This</span><span class="i">-&gt;_PerformNeighborhoodVerticesSearch</span><span class="s">(</span><span class="q">&quot;WithSuccessorsAndRadiusUpto&quot;</span><span class="cm">,</span> <span class="i">$StartVertexID</span><span class="cm">,</span> <span class="i">$Radius</span><span class="s">)</span><span class="sc">;</span>
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parents:
diff changeset
1316 1303 <span class="s">}</span>
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parents:
diff changeset
1317 1304
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parents:
diff changeset
1318 1305 <span class="c"># Search vertices around specified root vertex along with identification of</span>
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parents:
diff changeset
1319 1306 <span class="c"># successors of each vertex found during the search...</span>
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parents:
diff changeset
1320 1307 <span class="c">#</span>
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parents:
diff changeset
1321 <a name="PerformNeighborhoodVerticesSearchWithSuccessors-"></a>1308 <span class="k">sub </span><span class="m">PerformNeighborhoodVerticesSearchWithSuccessors</span> <span class="s">{</span>
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parents:
diff changeset
1322 1309 <span class="k">my</span><span class="s">(</span><span class="i">$This</span><span class="cm">,</span> <span class="i">$StartVertexID</span><span class="s">)</span> = <span class="i">@_</span><span class="sc">;</span>
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parents:
diff changeset
1323 1310
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diff changeset
1324 1311 <span class="c"># Make sure start vertex is defined...</span>
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parents:
diff changeset
1325 1312 <span class="k">if</span> <span class="s">(</span>!<span class="k">defined</span> <span class="i">$StartVertexID</span><span class="s">)</span> <span class="s">{</span>
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parents:
diff changeset
1326 1313 <span class="w">carp</span> <span class="q">&quot;Warning: ${ClassName}-&gt;PerformNeighborhoodVerticesSearchWithSuccessors: No vertices search performed: Start vertex must be specified...&quot;</span><span class="sc">;</span>
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parents:
diff changeset
1327 1314 <span class="k">return</span> <span class="k">undef</span><span class="sc">;</span>
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parents:
diff changeset
1328 1315 <span class="s">}</span>
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parents:
diff changeset
1329 1316
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parents:
diff changeset
1330 1317 <span class="c"># Make sure start vertex is valid...</span>
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diff changeset
1331 1318 <span class="k">if</span> <span class="s">(</span>!<span class="i">$This</span>-&gt;{<span class="w">Graph</span>}<span class="i">-&gt;HasVertex</span><span class="s">(</span><span class="i">$StartVertexID</span><span class="s">)</span><span class="s">)</span> <span class="s">{</span>
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parents:
diff changeset
1332 1319 <span class="w">carp</span> <span class="q">&quot;Warning: ${ClassName}-&gt;PerformNeighborhoodVerticesSearchWithSuccessors: No vertices search performed: Vertex $StartVertexID doesn&#39;t exist...&quot;</span><span class="sc">;</span>
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parents:
diff changeset
1333 1320 <span class="k">return</span> <span class="k">undef</span><span class="sc">;</span>
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parents:
diff changeset
1334 1321 <span class="s">}</span>
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parents:
diff changeset
1335 1322 <span class="c"># Perform vertices search...</span>
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parents:
diff changeset
1336 1323 <span class="k">return</span> <span class="i">$This</span><span class="i">-&gt;_PerformNeighborhoodVerticesSearch</span><span class="s">(</span><span class="q">&quot;WithSuccessorsAndAllRadii&quot;</span><span class="cm">,</span> <span class="i">$StartVertexID</span><span class="s">)</span><span class="sc">;</span>
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parents:
diff changeset
1337 1324 <span class="s">}</span>
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parents:
diff changeset
1338 1325
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diff changeset
1339 1326 <span class="c"># Search vertices at successive neighborhood radii levels...</span>
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parents:
diff changeset
1340 1327 <span class="c">#</span>
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parents:
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1341 <a name="_PerformNeighborhoodVerticesSearch-"></a>1328 <span class="k">sub </span><span class="m">_PerformNeighborhoodVerticesSearch</span> <span class="s">{</span>
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parents:
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1342 1329 <span class="k">my</span><span class="s">(</span><span class="i">$This</span><span class="cm">,</span> <span class="i">$Mode</span><span class="cm">,</span> <span class="i">$RootVertexID</span><span class="cm">,</span> <span class="i">$Radius</span><span class="s">)</span> = <span class="i">@_</span><span class="sc">;</span>
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parents:
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1343 1330 <span class="k">my</span><span class="s">(</span><span class="i">$DepthLimit</span><span class="cm">,</span> <span class="i">$AllowCycles</span><span class="s">)</span><span class="sc">;</span>
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1344 1331
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1345 1332 <span class="i">$DepthLimit</span> = <span class="k">defined</span> <span class="i">$Radius</span> ? <span class="i">$Radius</span> <span class="co">:</span> <span class="k">undef</span><span class="sc">;</span>
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parents:
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1346 1333 <span class="i">$AllowCycles</span> = <span class="k">undef</span><span class="sc">;</span>
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parents:
diff changeset
1347 1334
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1348 1335 <span class="c"># Perform BFS search...</span>
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diff changeset
1349 1336 <span class="k">if</span> <span class="s">(</span><span class="i">$Mode</span> =~ <span class="q">/^RadiusUpto$/i</span><span class="s">)</span> <span class="s">{</span>
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1350 1337 <span class="i">$This</span><span class="i">-&gt;_PerformVertexNeighborhoodSearch</span><span class="s">(</span><span class="q">&quot;BFSWithLimit&quot;</span><span class="cm">,</span> <span class="i">$RootVertexID</span><span class="cm">,</span> <span class="i">$DepthLimit</span><span class="s">)</span><span class="sc">;</span>
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parents:
diff changeset
1351 1338 <span class="s">}</span>
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1352 1339 <span class="k">elsif</span> <span class="s">(</span><span class="i">$Mode</span> =~ <span class="q">/^(AllRadii)$/i</span><span class="s">)</span> <span class="s">{</span>
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1353 1340 <span class="i">$This</span><span class="i">-&gt;_PerformVertexNeighborhoodSearch</span><span class="s">(</span><span class="q">&quot;BFS&quot;</span><span class="cm">,</span> <span class="i">$RootVertexID</span><span class="s">)</span><span class="sc">;</span>
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parents:
diff changeset
1354 1341 <span class="s">}</span>
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parents:
diff changeset
1355 1342 <span class="k">elsif</span> <span class="s">(</span><span class="i">$Mode</span> =~ <span class="q">/^WithSuccessorsAndRadiusUpto$/i</span><span class="s">)</span> <span class="s">{</span>
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parents:
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1356 1343 <span class="i">$AllowCycles</span> = <span class="n">1</span><span class="sc">;</span>
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parents:
diff changeset
1357 1344 <span class="i">$This</span><span class="i">-&gt;_PerformVertexNeighborhoodSearch</span><span class="s">(</span><span class="q">&quot;BFSWithLimit&quot;</span><span class="cm">,</span> <span class="i">$RootVertexID</span><span class="cm">,</span> <span class="i">$DepthLimit</span><span class="cm">,</span> <span class="i">$AllowCycles</span><span class="s">)</span><span class="sc">;</span>
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diff changeset
1358 1345 <span class="s">}</span>
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parents:
diff changeset
1359 1346 <span class="k">elsif</span> <span class="s">(</span><span class="i">$Mode</span> =~ <span class="q">/^WithSuccessorsAndAllRadii$/i</span><span class="s">)</span> <span class="s">{</span>
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diff changeset
1360 1347 <span class="i">$AllowCycles</span> = <span class="n">1</span><span class="sc">;</span>
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diff changeset
1361 1348 <span class="i">$This</span><span class="i">-&gt;_PerformVertexNeighborhoodSearch</span><span class="s">(</span><span class="q">&quot;BFSWithLimit&quot;</span><span class="cm">,</span> <span class="i">$RootVertexID</span><span class="cm">,</span> <span class="i">$DepthLimit</span><span class="cm">,</span> <span class="i">$AllowCycles</span><span class="s">)</span><span class="sc">;</span>
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parents:
diff changeset
1362 1349 <span class="s">}</span>
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diff changeset
1363 1350
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diff changeset
1364 1351 <span class="c"># Make sure traversal did get the root vertex...</span>
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diff changeset
1365 1352 <span class="k">if</span> <span class="s">(</span>!<span class="k">exists</span> <span class="i">$This</span>-&gt;{<span class="w">VerticesDepth</span>}{<span class="i">$RootVertexID</span>}<span class="s">)</span> <span class="s">{</span>
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parents:
diff changeset
1366 1353 <span class="k">return</span> <span class="i">$This</span><span class="sc">;</span>
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parents:
diff changeset
1367 1354 <span class="s">}</span>
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parents:
diff changeset
1368 1355
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diff changeset
1369 1356 <span class="k">if</span> <span class="s">(</span><span class="i">$Mode</span> =~ <span class="q">/^(RadiusUpto|AllRadii)$/i</span><span class="s">)</span> <span class="s">{</span>
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diff changeset
1370 1357 <span class="k">push</span> <span class="i">@</span>{<span class="i">$This</span>-&gt;{<span class="w">VerticesNeighborhoods</span>}}<span class="cm">,</span> <span class="i">$This</span><span class="i">-&gt;_CollectVerticesAtSpecificDepths</span><span class="s">(</span><span class="s">)</span><span class="sc">;</span>
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diff changeset
1371 1358 <span class="s">}</span>
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diff changeset
1372 1359 <span class="k">elsif</span> <span class="s">(</span><span class="i">$Mode</span> =~ <span class="q">/^(WithSuccessorsAndRadiusUpto|WithSuccessorsAndAllRadii)$/i</span><span class="s">)</span> <span class="s">{</span>
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parents:
diff changeset
1373 1360 <span class="k">push</span> <span class="i">@</span>{<span class="i">$This</span>-&gt;{<span class="w">VerticesNeighborhoodsWithSuccessors</span>}}<span class="cm">,</span> <span class="i">$This</span><span class="i">-&gt;_CollectVerticesWithSuccessorsAtSpecificDepths</span><span class="s">(</span><span class="s">)</span><span class="sc">;</span>
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parents:
diff changeset
1374 1361 <span class="s">}</span>
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diff changeset
1375 1362
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diff changeset
1376 1363 <span class="k">return</span> <span class="i">$This</span><span class="sc">;</span>
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parents:
diff changeset
1377 1364 <span class="s">}</span>
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diff changeset
1378 1365
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diff changeset
1379 1366 <span class="c"># Perform appropriate vertex search...</span>
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parents:
diff changeset
1380 1367 <span class="c">#</span>
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diff changeset
1381 <a name="_PerformVertexNeighborhoodSearch-"></a>1368 <span class="k">sub </span><span class="m">_PerformVertexNeighborhoodSearch</span> <span class="s">{</span>
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diff changeset
1382 1369 <span class="k">my</span><span class="s">(</span><span class="i">$This</span><span class="cm">,</span> <span class="i">$SearchType</span><span class="cm">,</span> <span class="i">$RootVertexID</span><span class="cm">,</span> <span class="i">$DepthLimit</span><span class="cm">,</span> <span class="i">$AllowCycles</span><span class="s">)</span> = <span class="i">@_</span><span class="sc">;</span>
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diff changeset
1383 1370
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diff changeset
1384 1371 <span class="c"># Setup search...</span>
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parents:
diff changeset
1385 1372 <span class="i">$This</span>-&gt;{<span class="w">TraversalMode</span>} = <span class="q">&#39;VertexNeighborhood&#39;</span><span class="sc">;</span>
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diff changeset
1386 1373 <span class="i">$This</span>-&gt;{<span class="w">TraversalType</span>} = <span class="i">$SearchType</span><span class="sc">;</span>
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diff changeset
1387 1374
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diff changeset
1388 1375 <span class="k">if</span> <span class="s">(</span><span class="k">defined</span> <span class="i">$RootVertexID</span><span class="s">)</span> <span class="s">{</span>
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parents:
diff changeset
1389 1376 <span class="i">$This</span>-&gt;{<span class="w">RootVertex</span>} = <span class="i">$RootVertexID</span><span class="sc">;</span>
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parents:
diff changeset
1390 1377 <span class="s">}</span>
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diff changeset
1391 1378 <span class="k">if</span> <span class="s">(</span><span class="k">defined</span> <span class="i">$DepthLimit</span><span class="s">)</span> <span class="s">{</span>
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diff changeset
1392 1379 <span class="i">$This</span>-&gt;{<span class="w">DepthLimit</span>} = <span class="i">$DepthLimit</span><span class="sc">;</span>
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parents:
diff changeset
1393 1380 <span class="s">}</span>
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diff changeset
1394 1381 <span class="k">if</span> <span class="s">(</span><span class="k">defined</span> <span class="i">$AllowCycles</span><span class="s">)</span> <span class="s">{</span>
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diff changeset
1395 1382 <span class="i">$This</span>-&gt;{<span class="w">AllowVertexCycles</span>} = <span class="i">$AllowCycles</span><span class="sc">;</span>
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diff changeset
1396 1383 <span class="s">}</span>
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diff changeset
1397 1384
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diff changeset
1398 1385 <span class="c"># Perform search...</span>
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diff changeset
1399 1386 <span class="k">return</span> <span class="i">$This</span><span class="i">-&gt;_TraverseGraph</span><span class="s">(</span><span class="s">)</span><span class="sc">;</span>
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diff changeset
1400 1387 <span class="s">}</span>
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diff changeset
1401 1388
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diff changeset
1402 1389 <span class="c"># Get orderded list of vertices after DFS/BFS search...</span>
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parents:
diff changeset
1403 1390 <span class="c">#</span>
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parents:
diff changeset
1404 <a name="GetVertices-"></a>1391 <span class="k">sub </span><span class="m">GetVertices</span> <span class="s">{</span>
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diff changeset
1405 1392 <span class="k">my</span><span class="s">(</span><span class="i">$This</span><span class="s">)</span> = <span class="i">@_</span><span class="sc">;</span>
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parents:
diff changeset
1406 1393
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diff changeset
1407 1394 <span class="k">return</span> <span class="k">wantarray</span> ? <span class="i">@</span>{<span class="i">$This</span>-&gt;{<span class="w">Vertices</span>}} <span class="co">:</span> <span class="k">scalar</span> <span class="i">@</span>{<span class="i">$This</span>-&gt;{<span class="w">Vertices</span>}}<span class="sc">;</span>
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parents:
diff changeset
1408 1395 <span class="s">}</span>
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diff changeset
1409 1396
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diff changeset
1410 1397 <span class="c"># Get a hash list containing vertex and root vertex as key/value pair for all vertices</span>
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parents:
diff changeset
1411 1398 <span class="c"># ordered using DFS/BFS search available via GetVertices method...</span>
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parents:
diff changeset
1412 1399 <span class="c">#</span>
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diff changeset
1413 <a name="GetVerticesRoots-"></a>1400 <span class="k">sub </span><span class="m">GetVerticesRoots</span> <span class="s">{</span>
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parents:
diff changeset
1414 1401 <span class="k">my</span><span class="s">(</span><span class="i">$This</span><span class="s">)</span> = <span class="i">@_</span><span class="sc">;</span>
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diff changeset
1415 1402
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diff changeset
1416 1403 <span class="k">return</span> <span class="i">%</span>{<span class="i">$This</span>-&gt;{<span class="w">VerticesRoots</span>}}<span class="sc">;</span>
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diff changeset
1417 1404 <span class="s">}</span>
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diff changeset
1418 1405
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diff changeset
1419 1406 <span class="c"># Get a list containing lists of vertices in connected components of graph after DFS/BFS</span>
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parents:
diff changeset
1420 1407 <span class="c"># search...</span>
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diff changeset
1421 1408 <span class="c">#</span>
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diff changeset
1422 1409 <span class="c"># Note:</span>
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diff changeset
1423 1410 <span class="c"># . List is sorted in descending order of number of vertices in each connected component.</span>
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diff changeset
1424 1411 <span class="c">#</span>
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diff changeset
1425 <a name="GetConnectedComponentsVertices-"></a>1412 <span class="k">sub </span><span class="m">GetConnectedComponentsVertices</span> <span class="s">{</span>
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diff changeset
1426 1413 <span class="k">my</span><span class="s">(</span><span class="i">$This</span><span class="s">)</span> = <span class="i">@_</span><span class="sc">;</span>
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diff changeset
1427 1414 <span class="k">my</span><span class="s">(</span><span class="i">$VertexID</span><span class="cm">,</span> <span class="i">$VertexRoot</span><span class="cm">,</span> <span class="i">@ConnectedVertices</span><span class="cm">,</span> <span class="i">%VerticesAtRoot</span><span class="s">)</span><span class="sc">;</span>
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diff changeset
1428 1415
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diff changeset
1429 1416 <span class="i">@ConnectedVertices</span> = <span class="s">(</span><span class="s">)</span><span class="sc">;</span>
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1430 1417 <span class="i">%VerticesAtRoot</span> = <span class="s">(</span><span class="s">)</span><span class="sc">;</span>
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diff changeset
1431 1418 <span class="k">for</span> <span class="i">$VertexID</span> <span class="s">(</span><span class="i">@</span>{<span class="i">$This</span>-&gt;{<span class="w">Vertices</span>}}<span class="s">)</span> <span class="s">{</span>
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diff changeset
1432 1419 <span class="i">$VertexRoot</span> = <span class="i">$This</span>-&gt;{<span class="w">VerticesRoots</span>}{<span class="i">$VertexID</span>}<span class="sc">;</span>
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diff changeset
1433 1420 <span class="k">if</span> <span class="s">(</span>!<span class="k">exists</span> <span class="i">$VerticesAtRoot</span>{<span class="i">$VertexRoot</span>}<span class="s">)</span> <span class="s">{</span>
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diff changeset
1434 1421 <span class="i">@</span>{<span class="i">$VerticesAtRoot</span>{<span class="i">$VertexRoot</span>}} = <span class="s">(</span><span class="s">)</span><span class="sc">;</span>
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parents:
diff changeset
1435 1422 <span class="s">}</span>
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diff changeset
1436 1423 <span class="k">push</span> <span class="i">@</span>{<span class="i">$VerticesAtRoot</span>{<span class="i">$VertexRoot</span>}}<span class="cm">,</span> <span class="i">$VertexID</span><span class="sc">;</span>
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parents:
diff changeset
1437 1424 <span class="s">}</span>
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diff changeset
1438 1425 <span class="k">push</span> <span class="i">@ConnectedVertices</span><span class="cm">,</span> <span class="k">sort</span> <span class="s">{</span> <span class="i">@</span>{<span class="i">$b</span>} &lt;=&gt; <span class="i">@</span>{<span class="i">$a</span>} <span class="s">}</span> <span class="k">values</span> <span class="i">%VerticesAtRoot</span><span class="sc">;</span>
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diff changeset
1439 1426
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diff changeset
1440 1427 <span class="k">return</span> <span class="k">wantarray</span> ? <span class="i">@ConnectedVertices</span> <span class="co">:</span> <span class="k">scalar</span> <span class="i">@ConnectedVertices</span><span class="sc">;</span>
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diff changeset
1441 1428 <span class="s">}</span>
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1442 1429
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1443 1430 <span class="c"># Get predecessor vertices...</span>
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1444 1431 <span class="c">#</span>
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1445 <a name="GetVerticesPredecessors-"></a>1432 <span class="k">sub </span><span class="m">GetVerticesPredecessors</span> <span class="s">{</span>
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1446 1433 <span class="k">my</span><span class="s">(</span><span class="i">$This</span><span class="s">)</span> = <span class="i">@_</span><span class="sc">;</span>
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1447 1434
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1448 1435 <span class="k">return</span> <span class="i">%</span>{<span class="i">$This</span>-&gt;{<span class="w">VerticesPredecessors</span>}}<span class="sc">;</span>
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1449 1436 <span class="s">}</span>
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1450 1437
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1451 1438 <span class="c"># Get a hash list containing vertex and depth from root vertex as key/value pair for all vertices</span>
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diff changeset
1452 1439 <span class="c"># ordered using DFS/BFS search available via GetVertices method...</span>
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1453 1440 <span class="c">#</span>
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1454 <a name="GetVerticesDepth-"></a>1441 <span class="k">sub </span><span class="m">GetVerticesDepth</span> <span class="s">{</span>
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1455 1442 <span class="k">my</span><span class="s">(</span><span class="i">$This</span><span class="s">)</span> = <span class="i">@_</span><span class="sc">;</span>
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1456 1443
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1457 1444 <span class="k">return</span> <span class="i">%</span>{<span class="i">$This</span>-&gt;{<span class="w">VerticesDepth</span>}}<span class="sc">;</span>
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1458 1445 <span class="s">}</span>
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1459 1446
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1460 1447 <span class="c"># Get paths found during paths search...</span>
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1461 1448 <span class="c">#</span>
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1462 <a name="GetPaths-"></a>1449 <span class="k">sub </span><span class="m">GetPaths</span> <span class="s">{</span>
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1463 1450 <span class="k">my</span><span class="s">(</span><span class="i">$This</span><span class="s">)</span> = <span class="i">@_</span><span class="sc">;</span>
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1464 1451
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1465 1452 <span class="k">return</span> <span class="k">wantarray</span> ? <span class="i">@</span>{<span class="i">$This</span>-&gt;{<span class="w">Paths</span>}} <span class="co">:</span> <span class="k">scalar</span> <span class="i">@</span>{<span class="i">$This</span>-&gt;{<span class="w">Paths</span>}}<span class="sc">;</span>
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1466 1453 <span class="s">}</span>
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1467 1454
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1468 1455 <span class="c"># Get vertices collected at various neighborhood radii...</span>
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1469 1456 <span class="c">#</span>
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1470 <a name="GetVerticesNeighborhoods-"></a>1457 <span class="k">sub </span><span class="m">GetVerticesNeighborhoods</span> <span class="s">{</span>
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1471 1458 <span class="k">my</span><span class="s">(</span><span class="i">$This</span><span class="s">)</span> = <span class="i">@_</span><span class="sc">;</span>
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1472 1459
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1473 1460 <span class="k">return</span> <span class="k">wantarray</span> ? <span class="i">@</span>{<span class="i">$This</span>-&gt;{<span class="w">VerticesNeighborhoods</span>}} <span class="co">:</span> <span class="k">scalar</span> <span class="i">@</span>{<span class="i">$This</span>-&gt;{<span class="w">VerticesNeighborhoods</span>}}<span class="sc">;</span>
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1474 1461 <span class="s">}</span>
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1475 1462
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1476 1463 <span class="c"># Get vertices, along with their successor vertices, collected at various neighborhood radii as</span>
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1477 1464 <span class="c"># a list containing references to lists with first value corresponding to vertex ID and second value</span>
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1478 1465 <span class="c"># a reference to a list containing its successors.</span>
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1479 1466 <span class="c">#</span>
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1480 <a name="GetVerticesNeighborhoodsWithSuccessors-"></a>1467 <span class="k">sub </span><span class="m">GetVerticesNeighborhoodsWithSuccessors</span> <span class="s">{</span>
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1481 1468 <span class="k">my</span><span class="s">(</span><span class="i">$This</span><span class="s">)</span> = <span class="i">@_</span><span class="sc">;</span>
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1482 1469
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1483 1470 <span class="k">return</span> <span class="k">wantarray</span> ? <span class="i">@</span>{<span class="i">$This</span>-&gt;{<span class="w">VerticesNeighborhoodsWithSuccessors</span>}} <span class="co">:</span> <span class="k">scalar</span> <span class="i">@</span>{<span class="i">$This</span>-&gt;{<span class="w">VerticesNeighborhoodsWithSuccessors</span>}}<span class="sc">;</span>
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1484 1471 <span class="s">}</span>
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1485 1472
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1486 1473 <span class="c"># Return a string containg data for PathsTraversal object...</span>
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1487 <a name="StringifyPathsTraversal-"></a>1474 <span class="k">sub </span><span class="m">StringifyPathsTraversal</span> <span class="s">{</span>
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1488 1475 <span class="k">my</span><span class="s">(</span><span class="i">$This</span><span class="s">)</span> = <span class="i">@_</span><span class="sc">;</span>
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1489 1476 <span class="k">my</span><span class="s">(</span><span class="i">$PathsTraversalString</span><span class="s">)</span><span class="sc">;</span>
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1490 1477
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1491 1478 <span class="i">$PathsTraversalString</span> = <span class="q">&quot;PathsTraversalMode: &quot;</span> . <span class="i">$This</span>-&gt;{<span class="w">TraversalMode</span>}<span class="sc">;</span>
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1492 1479 <span class="i">$PathsTraversalString</span> .= <span class="q">&quot;; PathsTraversalType: &quot;</span> . <span class="i">$This</span>-&gt;{<span class="w">TraversalType</span>}<span class="sc">;</span>
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1493 1480
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1494 1481 <span class="c"># Vertices ordered by traversal...</span>
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1495 1482 <span class="i">$PathsTraversalString</span> .= <span class="q">&quot;; Vertices: &quot;</span> . <span class="k">join</span><span class="s">(</span><span class="q">&#39; &#39;</span><span class="cm">,</span> <span class="i">@</span>{<span class="i">$This</span>-&gt;{<span class="w">Vertices</span>}}<span class="s">)</span><span class="sc">;</span>
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1496 1483
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1497 1484 <span class="c"># Stringify depths of vertices...</span>
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1498 1485 <span class="i">$PathsTraversalString</span> .= <span class="q">&quot;; &quot;</span> . <span class="i">$This</span><span class="i">-&gt;StringifyVerticesDepth</span><span class="s">(</span><span class="s">)</span><span class="sc">;</span>
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1499 1486
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1500 1487 <span class="c"># Stringify roots of vertices...</span>
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1501 1488 <span class="i">$PathsTraversalString</span> .= <span class="q">&quot;; &quot;</span> . <span class="i">$This</span><span class="i">-&gt;StringifyVerticesRoots</span><span class="s">(</span><span class="s">)</span><span class="sc">;</span>
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1502 1489
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1503 1490 <span class="c"># Stringify predecessor of vertices...</span>
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1504 1491 <span class="i">$PathsTraversalString</span> .= <span class="q">&quot;; &quot;</span> . <span class="i">$This</span><span class="i">-&gt;StringifyVerticesPredecessors</span><span class="s">(</span><span class="s">)</span><span class="sc">;</span>
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1505 1492
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1506 1493 <span class="c"># Stringify successor vertices...</span>
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1507 1494 <span class="i">$PathsTraversalString</span> .= <span class="q">&quot;; &quot;</span> . <span class="i">$This</span><span class="i">-&gt;StringifyVerticesSuccessors</span><span class="s">(</span><span class="s">)</span><span class="sc">;</span>
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1508 1495
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1509 1496 <span class="c"># Stringify paths...</span>
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1510 1497 <span class="i">$PathsTraversalString</span> .= <span class="q">&quot;; &quot;</span> . <span class="i">$This</span><span class="i">-&gt;StringifyPaths</span><span class="s">(</span><span class="s">)</span><span class="sc">;</span>
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1511 1498
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1512 1499 <span class="c"># Stringify vertices neighborhoods...</span>
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1513 1500 <span class="i">$PathsTraversalString</span> .= <span class="q">&quot;; &quot;</span> . <span class="i">$This</span><span class="i">-&gt;StringifyVerticesNeighborhoods</span><span class="s">(</span><span class="s">)</span><span class="sc">;</span>
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1514 1501
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1515 1502 <span class="c"># Stringify vertices neighborhoods with successors...</span>
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1516 1503 <span class="i">$PathsTraversalString</span> .= <span class="q">&quot;; &quot;</span> . <span class="i">$This</span><span class="i">-&gt;StringifyVerticesNeighborhoodsWithSuccessors</span><span class="s">(</span><span class="s">)</span><span class="sc">;</span>
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1517 1504
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1518 1505 <span class="k">return</span> <span class="i">$PathsTraversalString</span><span class="sc">;</span>
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1519 1506 <span class="s">}</span>
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1520 1507
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1521 1508 <span class="c"># Stringify vertices depth...</span>
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1522 1509 <span class="c">#</span>
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1523 <a name="StringifyVerticesDepth-"></a>1510 <span class="k">sub </span><span class="m">StringifyVerticesDepth</span> <span class="s">{</span>
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1524 1511 <span class="k">my</span><span class="s">(</span><span class="i">$This</span><span class="s">)</span> = <span class="i">@_</span><span class="sc">;</span>
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1525 1512 <span class="k">my</span><span class="s">(</span><span class="i">$VertexID</span><span class="cm">,</span> <span class="i">$VertexDepth</span><span class="cm">,</span> <span class="i">$DepthString</span><span class="s">)</span><span class="sc">;</span>
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1526 1513
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1527 1514 <span class="k">if</span> <span class="s">(</span>!<span class="i">@</span>{<span class="i">$This</span>-&gt;{<span class="w">Vertices</span>}}<span class="s">)</span> <span class="s">{</span>
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1528 1515 <span class="i">$DepthString</span> = <span class="q">&quot;&lt;Vertex-Depth&gt;: None&quot;</span><span class="sc">;</span>
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1529 1516 <span class="k">return</span> <span class="i">$DepthString</span><span class="sc">;</span>
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1530 1517 <span class="s">}</span>
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1531 1518
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1532 1519 <span class="i">$DepthString</span> = <span class="q">&quot;&lt;Vertex-Depth&gt;: &quot;</span><span class="sc">;</span>
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1533 1520 <span class="k">for</span> <span class="i">$VertexID</span> <span class="s">(</span><span class="i">@</span>{<span class="i">$This</span>-&gt;{<span class="w">Vertices</span>}}<span class="s">)</span> <span class="s">{</span>
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1534 1521 <span class="i">$VertexDepth</span> = <span class="i">$This</span>-&gt;{<span class="w">VerticesDepth</span>}{<span class="i">$VertexID</span>}<span class="sc">;</span>
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1535 1522 <span class="i">$DepthString</span> .= <span class="q">&quot; &lt;$VertexID-$VertexDepth&gt;&quot;</span><span class="sc">;</span>
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1536 1523 <span class="s">}</span>
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1537 1524 <span class="k">return</span> <span class="i">$DepthString</span><span class="sc">;</span>
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1538 1525 <span class="s">}</span>
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1539 1526
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1540 1527 <span class="c"># Stringify roots of vertices...</span>
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1541 1528 <span class="c">#</span>
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1542 <a name="StringifyVerticesRoots-"></a>1529 <span class="k">sub </span><span class="m">StringifyVerticesRoots</span> <span class="s">{</span>
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1543 1530 <span class="k">my</span><span class="s">(</span><span class="i">$This</span><span class="s">)</span> = <span class="i">@_</span><span class="sc">;</span>
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1544 1531 <span class="k">my</span><span class="s">(</span><span class="i">$VertexID</span><span class="cm">,</span> <span class="i">$RootVertexID</span><span class="cm">,</span> <span class="i">$RootsString</span><span class="s">)</span><span class="sc">;</span>
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1545 1532
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1546 1533 <span class="k">if</span> <span class="s">(</span>!<span class="i">@</span>{<span class="i">$This</span>-&gt;{<span class="w">Vertices</span>}}<span class="s">)</span> <span class="s">{</span>
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1547 1534 <span class="i">$RootsString</span> = <span class="q">&quot;&lt;Vertex-RootVertex&gt;: None&quot;</span><span class="sc">;</span>
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1548 1535 <span class="k">return</span> <span class="i">$RootsString</span><span class="sc">;</span>
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1549 1536 <span class="s">}</span>
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1550 1537
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1551 1538 <span class="i">$RootsString</span> = <span class="q">&quot;&lt;Vertex-RootVertex&gt;: &quot;</span><span class="sc">;</span>
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1552 1539 <span class="k">for</span> <span class="i">$VertexID</span> <span class="s">(</span><span class="i">@</span>{<span class="i">$This</span>-&gt;{<span class="w">Vertices</span>}}<span class="s">)</span> <span class="s">{</span>
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1553 1540 <span class="i">$RootVertexID</span> = <span class="i">$This</span>-&gt;{<span class="w">VerticesRoots</span>}{<span class="i">$VertexID</span>}<span class="sc">;</span>
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1554 1541 <span class="i">$RootsString</span> .= <span class="q">&quot; &lt;$VertexID-$RootVertexID&gt;&quot;</span><span class="sc">;</span>
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1555 1542 <span class="s">}</span>
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1556 1543 <span class="k">return</span> <span class="i">$RootsString</span><span class="sc">;</span>
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1557 1544 <span class="s">}</span>
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1558 1545
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1559 1546 <span class="c"># Stringify predecessor of vertices...</span>
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diff changeset
1560 1547 <span class="c">#</span>
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1561 <a name="StringifyVerticesPredecessors-"></a>1548 <span class="k">sub </span><span class="m">StringifyVerticesPredecessors</span> <span class="s">{</span>
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1562 1549 <span class="k">my</span><span class="s">(</span><span class="i">$This</span><span class="s">)</span> = <span class="i">@_</span><span class="sc">;</span>
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1563 1550 <span class="k">my</span><span class="s">(</span><span class="i">$VertexID</span><span class="cm">,</span> <span class="i">$PredecessorVertexID</span><span class="cm">,</span> <span class="i">$PredecessorString</span><span class="s">)</span><span class="sc">;</span>
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1564 1551
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diff changeset
1565 1552 <span class="k">if</span> <span class="s">(</span>!<span class="i">@</span>{<span class="i">$This</span>-&gt;{<span class="w">Vertices</span>}}<span class="s">)</span> <span class="s">{</span>
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1566 1553 <span class="i">$PredecessorString</span> = <span class="q">&quot;&lt;Vertex-PredecessorVertex&gt;: None&quot;</span><span class="sc">;</span>
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parents:
diff changeset
1567 1554 <span class="k">return</span> <span class="i">$PredecessorString</span><span class="sc">;</span>
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deepakjadmin
parents:
diff changeset
1568 1555 <span class="s">}</span>
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parents:
diff changeset
1569 1556
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parents:
diff changeset
1570 1557 <span class="i">$PredecessorString</span> = <span class="q">&quot;&lt;Vertex-PredecessorVertex&gt;: &quot;</span><span class="sc">;</span>
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parents:
diff changeset
1571 1558 <span class="k">for</span> <span class="i">$VertexID</span> <span class="s">(</span><span class="i">@</span>{<span class="i">$This</span>-&gt;{<span class="w">Vertices</span>}}<span class="s">)</span> <span class="s">{</span>
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parents:
diff changeset
1572 1559 <span class="i">$PredecessorVertexID</span> = <span class="i">$This</span>-&gt;{<span class="w">VerticesPredecessors</span>}{<span class="i">$VertexID</span>}<span class="sc">;</span>
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deepakjadmin
parents:
diff changeset
1573 1560 <span class="i">$PredecessorString</span> .= <span class="q">&quot; &lt;$VertexID-$PredecessorVertexID&gt;&quot;</span><span class="sc">;</span>
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deepakjadmin
parents:
diff changeset
1574 1561 <span class="s">}</span>
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
1575 1562 <span class="k">return</span> <span class="i">$PredecessorString</span><span class="sc">;</span>
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deepakjadmin
parents:
diff changeset
1576 1563 <span class="s">}</span>
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
1577 1564
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parents:
diff changeset
1578 1565 <span class="c"># Stringify successor vertices...</span>
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deepakjadmin
parents:
diff changeset
1579 1566 <span class="c">#</span>
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deepakjadmin
parents:
diff changeset
1580 <a name="StringifyVerticesSuccessors-"></a>1567 <span class="k">sub </span><span class="m">StringifyVerticesSuccessors</span> <span class="s">{</span>
73ae111cf86f Uploaded
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parents:
diff changeset
1581 1568 <span class="k">my</span><span class="s">(</span><span class="i">$This</span><span class="s">)</span> = <span class="i">@_</span><span class="sc">;</span>
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deepakjadmin
parents:
diff changeset
1582 1569 <span class="k">my</span><span class="s">(</span><span class="i">$VertexID</span><span class="cm">,</span> <span class="i">$SuccessorString</span><span class="cm">,</span> <span class="i">$VerticesSuccessorsString</span><span class="s">)</span><span class="sc">;</span>
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parents:
diff changeset
1583 1570
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parents:
diff changeset
1584 1571 <span class="k">if</span> <span class="s">(</span>!<span class="i">@</span>{<span class="i">$This</span>-&gt;{<span class="w">Vertices</span>}}<span class="s">)</span> <span class="s">{</span>
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parents:
diff changeset
1585 1572 <span class="i">$SuccessorString</span> = <span class="q">&quot;&lt;Vertex-VerticesSuccessorsList&gt;: None&quot;</span><span class="sc">;</span>
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parents:
diff changeset
1586 1573 <span class="k">return</span> <span class="i">$SuccessorString</span><span class="sc">;</span>
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deepakjadmin
parents:
diff changeset
1587 1574 <span class="s">}</span>
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parents:
diff changeset
1588 1575
73ae111cf86f Uploaded
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parents:
diff changeset
1589 1576 <span class="i">$SuccessorString</span> = <span class="q">&quot;&lt;Vertex-VerticesSuccessorsList&gt;: &quot;</span><span class="sc">;</span>
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parents:
diff changeset
1590 1577 <span class="k">for</span> <span class="i">$VertexID</span> <span class="s">(</span><span class="i">@</span>{<span class="i">$This</span>-&gt;{<span class="w">Vertices</span>}}<span class="s">)</span> <span class="s">{</span>
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parents:
diff changeset
1591 1578 <span class="k">if</span> <span class="s">(</span><span class="k">exists</span><span class="s">(</span><span class="i">$This</span>-&gt;{<span class="w">VerticesSuccessors</span>}{<span class="i">$VertexID</span>}<span class="s">)</span> &amp;&amp; <span class="i">@</span>{<span class="i">$This</span>-&gt;{<span class="w">VerticesSuccessors</span>}{<span class="i">$VertexID</span>}}<span class="s">)</span> <span class="s">{</span>
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parents:
diff changeset
1592 1579 <span class="i">$VerticesSuccessorsString</span> = <span class="k">join</span><span class="s">(</span><span class="q">&#39;,&#39;</span><span class="cm">,</span> <span class="i">@</span>{<span class="i">$This</span>-&gt;{<span class="w">VerticesSuccessors</span>}{<span class="i">$VertexID</span>}}<span class="s">)</span><span class="sc">;</span>
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deepakjadmin
parents:
diff changeset
1593 1580 <span class="s">}</span>
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deepakjadmin
parents:
diff changeset
1594 1581 <span class="k">else</span> <span class="s">{</span>
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
1595 1582 <span class="i">$VerticesSuccessorsString</span> = <span class="q">&quot;None&quot;</span><span class="sc">;</span>
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
1596 1583 <span class="s">}</span>
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
1597 1584 <span class="i">$SuccessorString</span> .= <span class="q">&quot; &lt;$VertexID-$VerticesSuccessorsString&gt;&quot;</span><span class="sc">;</span>
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
1598 1585 <span class="s">}</span>
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deepakjadmin
parents:
diff changeset
1599 1586 <span class="k">return</span> <span class="i">$SuccessorString</span><span class="sc">;</span>
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deepakjadmin
parents:
diff changeset
1600 1587 <span class="s">}</span>
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deepakjadmin
parents:
diff changeset
1601 1588
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
1602 1589 <span class="c"># Strinigify paths...</span>
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deepakjadmin
parents:
diff changeset
1603 1590 <span class="c">#</span>
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deepakjadmin
parents:
diff changeset
1604 <a name="StringifyPaths-"></a>1591 <span class="k">sub </span><span class="m">StringifyPaths</span> <span class="s">{</span>
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deepakjadmin
parents:
diff changeset
1605 1592 <span class="k">my</span><span class="s">(</span><span class="i">$This</span><span class="s">)</span> = <span class="i">@_</span><span class="sc">;</span>
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deepakjadmin
parents:
diff changeset
1606 1593 <span class="k">my</span><span class="s">(</span><span class="i">$PathsString</span><span class="cm">,</span> <span class="i">$Path</span><span class="s">)</span><span class="sc">;</span>
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
1607 1594
73ae111cf86f Uploaded
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parents:
diff changeset
1608 1595 <span class="k">if</span> <span class="s">(</span>!<span class="i">@</span>{<span class="i">$This</span>-&gt;{<span class="w">Paths</span>}}<span class="s">)</span> <span class="s">{</span>
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
1609 1596 <span class="i">$PathsString</span> = <span class="q">&quot;Paths: None&quot;</span><span class="sc">;</span>
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
1610 1597 <span class="k">return</span> <span class="i">$PathsString</span><span class="sc">;</span>
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deepakjadmin
parents:
diff changeset
1611 1598 <span class="s">}</span>
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parents:
diff changeset
1612 1599
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
1613 1600 <span class="k">my</span><span class="s">(</span><span class="i">$FirstPath</span><span class="s">)</span><span class="sc">;</span>
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
1614 1601 <span class="i">$PathsString</span> = <span class="q">&quot;Paths: &quot;</span><span class="sc">;</span>
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
1615 1602 <span class="i">$FirstPath</span> = <span class="n">1</span><span class="sc">;</span>
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
1616 1603 <span class="k">for</span> <span class="i">$Path</span> <span class="s">(</span><span class="i">@</span>{<span class="i">$This</span>-&gt;{<span class="w">Paths</span>}}<span class="s">)</span> <span class="s">{</span>
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
1617 1604 <span class="k">if</span> <span class="s">(</span><span class="i">$FirstPath</span><span class="s">)</span> <span class="s">{</span>
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
1618 1605 <span class="i">$FirstPath</span> = <span class="n">0</span><span class="sc">;</span>
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deepakjadmin
parents:
diff changeset
1619 1606 <span class="s">}</span>
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deepakjadmin
parents:
diff changeset
1620 1607 <span class="k">else</span> <span class="s">{</span>
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
1621 1608 <span class="i">$PathsString</span> .= <span class="q">&quot; &quot;</span><span class="sc">;</span>
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
1622 1609 <span class="s">}</span>
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
1623 1610 <span class="i">$PathsString</span> .= <span class="q">&quot;&lt;&quot;</span> . <span class="k">join</span><span class="s">(</span><span class="q">&#39;-&#39;</span><span class="cm">,</span> <span class="i">$Path</span><span class="i">-&gt;GetVertices</span><span class="s">(</span><span class="s">)</span><span class="s">)</span> . <span class="q">&quot;&gt;&quot;</span><span class="sc">;</span>
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deepakjadmin
parents:
diff changeset
1624 1611 <span class="s">}</span>
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
1625 1612 <span class="k">return</span> <span class="i">$PathsString</span><span class="sc">;</span>
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
1626 1613 <span class="s">}</span>
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deepakjadmin
parents:
diff changeset
1627 1614
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
1628 1615 <span class="c"># Strinigify vertices neighborhoods...</span>
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deepakjadmin
parents:
diff changeset
1629 1616 <span class="c">#</span>
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
1630 <a name="StringifyVerticesNeighborhoods-"></a>1617 <span class="k">sub </span><span class="m">StringifyVerticesNeighborhoods</span> <span class="s">{</span>
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
1631 1618 <span class="k">my</span><span class="s">(</span><span class="i">$This</span><span class="s">)</span> = <span class="i">@_</span><span class="sc">;</span>
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
1632 1619 <span class="k">my</span><span class="s">(</span><span class="i">$NeighborhoodsString</span><span class="cm">,</span> <span class="i">$NeighborhoodVerticesString</span><span class="cm">,</span> <span class="i">$Radius</span><span class="s">)</span><span class="sc">;</span>
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
1633 1620
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
1634 1621 <span class="k">if</span> <span class="s">(</span>!<span class="i">@</span>{<span class="i">$This</span>-&gt;{<span class="w">VerticesNeighborhoods</span>}}<span class="s">)</span> <span class="s">{</span>
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
1635 1622 <span class="i">$NeighborhoodsString</span> = <span class="q">&quot;&lt;NeighborhoodRadius-NeighborhoodVerticesList&gt;: None&quot;</span><span class="sc">;</span>
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
1636 1623 <span class="k">return</span> <span class="i">$NeighborhoodsString</span><span class="sc">;</span>
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
1637 1624 <span class="s">}</span>
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
1638 1625 <span class="i">$NeighborhoodsString</span> = <span class="q">&quot;&lt;NeighborhoodRadius-NeighborhoodVerticesList&gt;:&quot;</span><span class="sc">;</span>
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
1639 1626 <span class="k">for</span> <span class="i">$Radius</span> <span class="s">(</span><span class="n">0</span> .. <span class="i">$#</span>{<span class="i">$This</span>-&gt;{<span class="w">VerticesNeighborhoods</span>}}<span class="s">)</span> <span class="s">{</span>
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
1640 1627 <span class="i">$NeighborhoodVerticesString</span> = <span class="k">join</span><span class="s">(</span><span class="q">&#39;,&#39;</span><span class="cm">,</span> <span class="i">@</span>{<span class="i">$This</span>-&gt;{<span class="w">VerticesNeighborhoods</span>}[<span class="i">$Radius</span>]}<span class="s">)</span><span class="sc">;</span>
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
1641 1628 <span class="i">$NeighborhoodsString</span> .= <span class="q">&quot; &lt;$Radius-$NeighborhoodVerticesString&gt;&quot;</span><span class="sc">;</span>
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
1642 1629 <span class="s">}</span>
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
1643 1630
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
1644 1631 <span class="k">return</span> <span class="i">$NeighborhoodsString</span><span class="sc">;</span>
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
1645 1632 <span class="s">}</span>
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
1646 1633
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
1647 1634 <span class="c"># Strinigify vertices neighborhoods...</span>
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
1648 1635 <span class="c">#</span>
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
1649 <a name="StringifyVerticesNeighborhoodsWithSuccessors-"></a>1636 <span class="k">sub </span><span class="m">StringifyVerticesNeighborhoodsWithSuccessors</span> <span class="s">{</span>
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
1650 1637 <span class="k">my</span><span class="s">(</span><span class="i">$This</span><span class="s">)</span> = <span class="i">@_</span><span class="sc">;</span>
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
1651 1638 <span class="k">my</span><span class="s">(</span><span class="i">$NeighborhoodsString</span><span class="cm">,</span> <span class="i">$NeighborhoodVertexSuccessorsString</span><span class="cm">,</span> <span class="i">$Radius</span><span class="cm">,</span> <span class="i">$NeighborhoodVertericesWithSuccessorsRef</span><span class="cm">,</span> <span class="i">$NeighborhoodVertexWithSuccessorsRef</span><span class="cm">,</span> <span class="i">$VertexID</span><span class="cm">,</span> <span class="i">$NeighborhoodVertexSuccessorsRef</span><span class="s">)</span><span class="sc">;</span>
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
1652 1639
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
1653 1640 <span class="k">if</span> <span class="s">(</span>!<span class="i">@</span>{<span class="i">$This</span>-&gt;{<span class="w">VerticesNeighborhoodsWithSuccessors</span>}}<span class="s">)</span> <span class="s">{</span>
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
1654 1641 <span class="i">$NeighborhoodsString</span> = <span class="q">&quot;&lt;NeighborhoodRadius-NeighborhoodVertex-NeighborhoodVerticeSuccessorsList&gt;: None&quot;</span><span class="sc">;</span>
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
1655 1642 <span class="k">return</span> <span class="i">$NeighborhoodsString</span><span class="sc">;</span>
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
1656 1643 <span class="s">}</span>
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
1657 1644 <span class="i">$NeighborhoodsString</span> = <span class="q">&quot;&lt;NeighborhoodRadius-NeighborhoodVertex-NeighborhoodVerticeSuccessorsList&gt;: None&quot;</span><span class="sc">;</span>
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
1658 1645
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
1659 1646 <span class="i">$Radius</span> = <span class="n">0</span><span class="sc">;</span>
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
1660 1647 <span class="k">for</span> <span class="i">$NeighborhoodVertericesWithSuccessorsRef</span> <span class="s">(</span><span class="i">@</span>{<span class="i">$This</span>-&gt;{<span class="w">VerticesNeighborhoodsWithSuccessors</span>}}<span class="s">)</span> <span class="s">{</span>
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
1661 1648 <span class="k">for</span> <span class="i">$NeighborhoodVertexWithSuccessorsRef</span> <span class="s">(</span><span class="i">@</span>{<span class="i">$NeighborhoodVertericesWithSuccessorsRef</span>}<span class="s">)</span> <span class="s">{</span>
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
1662 1649 <span class="s">(</span><span class="i">$VertexID</span><span class="cm">,</span> <span class="i">$NeighborhoodVertexSuccessorsRef</span><span class="s">)</span> = <span class="i">@</span>{<span class="i">$NeighborhoodVertexWithSuccessorsRef</span>}<span class="sc">;</span>
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
1663 1650 <span class="i">$NeighborhoodVertexSuccessorsString</span> = <span class="q">&#39;None&#39;</span><span class="sc">;</span>
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
1664 1651 <span class="k">if</span> <span class="s">(</span><span class="i">@</span>{<span class="i">$NeighborhoodVertexSuccessorsRef</span>}<span class="s">)</span> <span class="s">{</span>
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
1665 1652 <span class="i">$NeighborhoodVertexSuccessorsString</span> = <span class="k">join</span><span class="s">(</span><span class="q">&#39;,&#39;</span><span class="cm">,</span> <span class="i">@</span>{<span class="i">$NeighborhoodVertexSuccessorsRef</span>}<span class="s">)</span><span class="sc">;</span>
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
1666 1653 <span class="s">}</span>
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
1667 1654 <span class="i">$NeighborhoodsString</span> .= <span class="q">&quot; &lt;$Radius-$VertexID-$NeighborhoodVertexSuccessorsString&gt;&quot;</span><span class="sc">;</span>
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
1668 1655 <span class="s">}</span>
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
1669 1656 <span class="i">$Radius</span>++<span class="sc">;</span>
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
1670 1657 <span class="s">}</span>
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
1671 1658 <span class="k">return</span> <span class="i">$NeighborhoodsString</span><span class="sc">;</span>
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
1672 1659 <span class="s">}</span>
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
1673 1660
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
1674 1661 <span class="c"># Return a reference to new paths traversal object...</span>
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
1675 <a name="Copy-"></a>1662 <span class="k">sub </span><span class="m">Copy</span> <span class="s">{</span>
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
1676 1663 <span class="k">my</span><span class="s">(</span><span class="i">$This</span><span class="s">)</span> = <span class="i">@_</span><span class="sc">;</span>
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
1677 1664 <span class="k">my</span><span class="s">(</span><span class="i">$NewPathsTraversal</span><span class="s">)</span><span class="sc">;</span>
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
1678 1665
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
1679 1666 <span class="i">$NewPathsTraversal</span> = <span class="i">Storable::dclone</span><span class="s">(</span><span class="i">$This</span><span class="s">)</span><span class="sc">;</span>
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
1680 1667
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
1681 1668 <span class="k">return</span> <span class="i">$NewPathsTraversal</span><span class="sc">;</span>
73ae111cf86f Uploaded
deepakjadmin
parents:
diff changeset
1682 1669 <span class="s">}</span>
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deepakjadmin
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1683 1670
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deepakjadmin
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1684 <a name="EOF-"></a></pre>
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deepakjadmin
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1685 <p>&nbsp;</p>
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deepakjadmin
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1686 <br />
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deepakjadmin
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1687 <center>
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deepakjadmin
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1688 <img src="../../../images/h2o2.png">
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deepakjadmin
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1689 </center>
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deepakjadmin
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1690 </body>
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deepakjadmin
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1691 </html>