Mercurial > repos > deepakjadmin > mayatool3_test3
comparison mayachemtools/docs/modules/html/code/PathsTraversal.html @ 0:73ae111cf86f draft
Uploaded
author | deepakjadmin |
---|---|
date | Wed, 20 Jan 2016 11:55:01 -0500 |
parents | |
children |
comparison
equal
deleted
inserted
replaced
-1:000000000000 | 0:73ae111cf86f |
---|---|
1 <html> | |
2 <head> | |
3 <title>MayaChemTools:Code:Graph::PathsTraversal.pm</title> | |
4 <meta http-equiv="content-type" content="text/html;charset=utf-8"> | |
5 <link rel="stylesheet" type="text/css" href="../../../css/MayaChemToolsCode.css"> | |
6 </head> | |
7 <body leftmargin="20" rightmargin="20" topmargin="10" bottommargin="10"> | |
8 <br/> | |
9 <center> | |
10 <a href="http://www.mayachemtools.org" title="MayaChemTools Home"><img src="../../../images/MayaChemToolsLogo.gif" border="0" alt="MayaChemTools"></a> | |
11 </center> | |
12 <br/> | |
13 <pre> | |
14 <a name="package-Graph::PathsTraversal-"></a> 1 <span class="k">package </span><span class="i">Graph::PathsTraversal</span><span class="sc">;</span> | |
15 2 <span class="c">#</span> | |
16 3 <span class="c"># $RCSfile: PathsTraversal.pm,v $</span> | |
17 4 <span class="c"># $Date: 2015/02/28 20:49:06 $</span> | |
18 5 <span class="c"># $Revision: 1.29 $</span> | |
19 6 <span class="c">#</span> | |
20 7 <span class="c"># Author: Manish Sud <msud@san.rr.com></span> | |
21 8 <span class="c">#</span> | |
22 9 <span class="c"># Copyright (C) 2015 Manish Sud. All rights reserved.</span> | |
23 10 <span class="c">#</span> | |
24 11 <span class="c"># This file is part of MayaChemTools.</span> | |
25 12 <span class="c">#</span> | |
26 13 <span class="c"># MayaChemTools is free software; you can redistribute it and/or modify it under</span> | |
27 14 <span class="c"># the terms of the GNU Lesser General Public License as published by the Free</span> | |
28 15 <span class="c"># Software Foundation; either version 3 of the License, or (at your option) any</span> | |
29 16 <span class="c"># later version.</span> | |
30 17 <span class="c">#</span> | |
31 18 <span class="c"># MayaChemTools is distributed in the hope that it will be useful, but without</span> | |
32 19 <span class="c"># any warranty; without even the implied warranty of merchantability of fitness</span> | |
33 20 <span class="c"># for a particular purpose. See the GNU Lesser General Public License for more</span> | |
34 21 <span class="c"># details.</span> | |
35 22 <span class="c">#</span> | |
36 23 <span class="c"># You should have received a copy of the GNU Lesser General Public License</span> | |
37 24 <span class="c"># along with MayaChemTools; if not, see <http://www.gnu.org/licenses/> or</span> | |
38 25 <span class="c"># write to the Free Software Foundation Inc., 59 Temple Place, Suite 330,</span> | |
39 26 <span class="c"># Boston, MA, 02111-1307, USA.</span> | |
40 27 <span class="c">#</span> | |
41 28 | |
42 29 <span class="k">use</span> <span class="w">strict</span><span class="sc">;</span> | |
43 30 <span class="k">use</span> <span class="w">Carp</span><span class="sc">;</span> | |
44 31 <span class="k">use</span> <span class="w">Exporter</span><span class="sc">;</span> | |
45 32 <span class="k">use</span> <span class="w">Graph</span><span class="sc">;</span> | |
46 33 <span class="k">use</span> <span class="w">Graph::Path</span><span class="sc">;</span> | |
47 34 | |
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> | |
49 36 | |
50 37 <span class="i">@ISA</span> = <span class="q">qw(Exporter)</span><span class="sc">;</span> | |
51 38 <span class="i">@EXPORT</span> = <span class="q">qw()</span><span class="sc">;</span> | |
52 39 <span class="i">@EXPORT_OK</span> = <span class="q">qw()</span><span class="sc">;</span> | |
53 40 | |
54 41 <span class="i">%EXPORT_TAGS</span> = <span class="s">(</span><span class="w">all</span> <span class="cm">=></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> | |
55 42 | |
56 43 <span class="c"># Setup class variables...</span> | |
57 44 <span class="k">my</span><span class="s">(</span><span class="i">$ClassName</span><span class="s">)</span><span class="sc">;</span> | |
58 45 <span class="i">_InitializeClass</span><span class="s">(</span><span class="s">)</span><span class="sc">;</span> | |
59 46 | |
60 47 <span class="c"># Overload Perl functions...</span> | |
61 48 <span class="k">use</span> <span class="w">overload</span> <span class="q">'""'</span> <span class="cm">=></span> <span class="q">'StringifyPathsTraversal'</span><span class="sc">;</span> | |
62 49 | |
63 50 <span class="c"># Class constructor...</span> | |
64 <a name="new-"></a> 51 <span class="k">sub </span><span class="m">new</span> <span class="s">{</span> | |
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> | |
66 53 | |
67 54 <span class="c"># Initialize object...</span> | |
68 55 <span class="k">my</span> <span class="i">$This</span> = <span class="s">{</span><span class="s">}</span><span class="sc">;</span> | |
69 56 <span class="k">bless</span> <span class="i">$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> | |
70 57 <span class="i">$This</span><span class="i">->_InitializePathsTraversal</span><span class="s">(</span><span class="i">$Graph</span><span class="s">)</span><span class="sc">;</span> | |
71 58 | |
72 59 <span class="k">return</span> <span class="i">$This</span><span class="sc">;</span> | |
73 60 <span class="s">}</span> | |
74 61 | |
75 62 <span class="c"># Initialize object data...</span> | |
76 <a name="_InitializePathsTraversal-"></a> 63 <span class="k">sub </span><span class="m">_InitializePathsTraversal</span> <span class="s">{</span> | |
77 64 <span class="k">my</span><span class="s">(</span><span class="i">$This</span><span class="cm">,</span> <span class="i">$Graph</span><span class="s">)</span> = <span class="i">@_</span><span class="sc">;</span> | |
78 65 | |
79 66 <span class="c"># Graph object...</span> | |
80 67 <span class="i">$This</span>->{<span class="w">Graph</span>} = <span class="i">$Graph</span><span class="sc">;</span> | |
81 68 | |
82 69 <span class="c"># Traversal mode: Vertex or Path</span> | |
83 70 <span class="i">$This</span>->{<span class="w">TraversalMode</span>} = <span class="q">''</span><span class="sc">;</span> | |
84 71 | |
85 72 <span class="c"># Traversal type: DFS, DFSWithLimit, BFS, BFSWithLimit...</span> | |
86 73 <span class="i">$This</span>->{<span class="w">TraversalType</span>} = <span class="q">''</span><span class="sc">;</span> | |
87 74 | |
88 75 <span class="c"># For finding root vertex and controlling search...</span> | |
89 76 <span class="k">my</span><span class="s">(</span><span class="i">@VertexIDs</span><span class="s">)</span><span class="sc">;</span> | |
90 77 <span class="i">@VertexIDs</span> = <span class="i">$This</span>->{<span class="w">Graph</span>}<span class="i">->GetVertices</span><span class="s">(</span><span class="s">)</span><span class="sc">;</span> | |
91 78 <span class="i">%</span>{<span class="i">$This</span>->{<span class="w">VerticesToVisit</span>}} = <span class="s">(</span><span class="s">)</span><span class="sc">;</span> | |
92 79 <span class="i">@</span>{<span class="i">$This</span>->{<span class="w">VerticesToVisit</span>}}{ <span class="i">@VertexIDs</span> } = <span class="i">@VertexIDs</span><span class="sc">;</span> | |
93 80 | |
94 81 <span class="c"># Root vertex of all visited vertices...</span> | |
95 82 <span class="i">%</span>{<span class="i">$This</span>->{<span class="w">VerticesRoots</span>}} = <span class="s">(</span><span class="s">)</span><span class="sc">;</span> | |
96 83 | |
97 84 <span class="c"># Visited vertices...</span> | |
98 85 <span class="i">%</span>{<span class="i">$This</span>->{<span class="w">VisitedVertices</span>}} = <span class="s">(</span><span class="s">)</span><span class="sc">;</span> | |
99 86 | |
100 87 <span class="c"># Finished vertices...</span> | |
101 88 <span class="i">%</span>{<span class="i">$This</span>->{<span class="w">FinishedVertices</span>}} = <span class="s">(</span><span class="s">)</span><span class="sc">;</span> | |
102 89 | |
103 90 <span class="c"># List of active vertices during DFS/BFS search...</span> | |
104 91 <span class="i">@</span>{<span class="i">$This</span>->{<span class="w">ActiveVertices</span>}} = <span class="s">(</span><span class="s">)</span><span class="sc">;</span> | |
105 92 | |
106 93 <span class="c"># List of ordered vertices traversed during DFS/BFS search...</span> | |
107 94 <span class="i">@</span>{<span class="i">$This</span>->{<span class="w">Vertices</span>}} = <span class="s">(</span><span class="s">)</span><span class="sc">;</span> | |
108 95 | |
109 96 <span class="c"># Vertex neighbors during traversal...</span> | |
110 97 <span class="i">%</span>{<span class="i">$This</span>->{<span class="w">VerticesNeighbors</span>}} = <span class="s">(</span><span class="s">)</span><span class="sc">;</span> | |
111 98 | |
112 99 <span class="c"># Vertices depth from root...</span> | |
113 100 <span class="i">%</span>{<span class="i">$This</span>->{<span class="w">VerticesDepth</span>}} = <span class="s">(</span><span class="s">)</span><span class="sc">;</span> | |
114 101 | |
115 102 <span class="c"># Predecessor of each vertex during vertex traversal. For root vertex, it's root itself...</span> | |
116 103 <span class="i">%</span>{<span class="i">$This</span>->{<span class="w">VerticesPredecessors</span>}} = <span class="s">(</span><span class="s">)</span><span class="sc">;</span> | |
117 104 | |
118 105 <span class="c"># Successors of each vertex during vertex traversal...</span> | |
119 106 <span class="i">%</span>{<span class="i">$This</span>->{<span class="w">VerticesSuccessors</span>}} = <span class="s">(</span><span class="s">)</span><span class="sc">;</span> | |
120 107 | |
121 108 <span class="c"># Vertices at different neighborhood levels during vertex traversal...</span> | |
122 109 <span class="i">@</span>{<span class="i">$This</span>->{<span class="w">VerticesNeighborhoods</span>}} = <span class="s">(</span><span class="s">)</span><span class="sc">;</span> | |
123 110 | |
124 111 <span class="c"># Vertices, along with their successors, at different neighborhood levels during vertex traversal...</span> | |
125 112 <span class="i">@</span>{<span class="i">$This</span>->{<span class="w">VerticesNeighborhoodsWithSuccessors</span>}} = <span class="s">(</span><span class="s">)</span><span class="sc">;</span> | |
126 113 | |
127 114 <span class="c"># Visited edges during Path TraversalMode...</span> | |
128 115 <span class="i">%</span>{<span class="i">$This</span>->{<span class="w">VisitedEdges</span>}} = <span class="s">(</span><span class="s">)</span><span class="sc">;</span> | |
129 116 <span class="i">%</span>{<span class="i">$This</span>->{<span class="w">VisitedEdges</span>}->{<span class="w">From</span>}} = <span class="s">(</span><span class="s">)</span><span class="sc">;</span> | |
130 117 <span class="i">%</span>{<span class="i">$This</span>->{<span class="w">VisitedEdges</span>}->{<span class="w">To</span>}} = <span class="s">(</span><span class="s">)</span><span class="sc">;</span> | |
131 118 | |
132 119 <span class="c"># Vertex path during Path TraversalMode...</span> | |
133 120 <span class="i">%</span>{<span class="i">$This</span>->{<span class="w">VerticesPaths</span>}} = <span class="s">(</span><span class="s">)</span><span class="sc">;</span> | |
134 121 | |
135 122 <span class="c"># Allow cycles in paths during VertexNeighborhood TraversalMode. By default, cycles are not allowed</span> | |
136 123 <span class="c"># during vertex traversal: a vertex is only visited once during BFS search for neighborhoods. For</span> | |
137 124 <span class="c"># neighborhood vertices search during successors identification, vertex cycles are explicity allowed</span> | |
138 125 <span class="c"># to indentify all successors.</span> | |
139 126 <span class="i">$This</span>->{<span class="w">AllowVertexCycles</span>} = <span class="n">0</span><span class="sc">;</span> | |
140 127 | |
141 128 <span class="c"># Allow cycles in paths during Path TraversalMode...</span> | |
142 129 <span class="i">$This</span>->{<span class="w">AllowPathCycles</span>} = <span class="n">1</span><span class="sc">;</span> | |
143 130 | |
144 131 <span class="c"># Cycle closure vertices during Path TraversalMode...</span> | |
145 132 <span class="i">%</span>{<span class="i">$This</span>->{<span class="w">CycleClosureVertices</span>}} = <span class="s">(</span><span class="s">)</span><span class="sc">;</span> | |
146 133 | |
147 134 <span class="c"># Paths traversed during search...</span> | |
148 135 <span class="i">@</span>{<span class="i">$This</span>->{<span class="w">Paths</span>}} = <span class="s">(</span><span class="s">)</span><span class="sc">;</span> | |
149 136 | |
150 137 <span class="k">return</span> <span class="i">$This</span><span class="sc">;</span> | |
151 138 <span class="s">}</span> | |
152 139 | |
153 140 <span class="c"># Initialize class ...</span> | |
154 <a name="_InitializeClass-"></a> 141 <span class="k">sub </span><span class="m">_InitializeClass</span> <span class="s">{</span> | |
155 142 <span class="c">#Class name...</span> | |
156 143 <span class="i">$ClassName</span> = <span class="w">__PACKAGE__</span><span class="sc">;</span> | |
157 144 <span class="s">}</span> | |
158 145 | |
159 146 <span class="c"># Perform a depth first search (DFS)...</span> | |
160 147 <span class="c">#</span> | |
161 <a name="PerformDepthFirstSearch-"></a> 148 <span class="k">sub </span><span class="m">PerformDepthFirstSearch</span> <span class="s">{</span> | |
162 149 <span class="k">my</span><span class="s">(</span><span class="i">$This</span><span class="cm">,</span> <span class="i">$RootVertexID</span><span class="s">)</span> = <span class="i">@_</span><span class="sc">;</span> | |
163 150 | |
164 151 <span class="k">if</span> <span class="s">(</span><span class="k">defined</span> <span class="i">$RootVertexID</span><span class="s">)</span> <span class="s">{</span> | |
165 152 <span class="k">if</span> <span class="s">(</span>!<span class="i">$This</span>->{<span class="w">Graph</span>}<span class="i">->HasVertex</span><span class="s">(</span><span class="i">$RootVertexID</span><span class="s">)</span><span class="s">)</span> <span class="s">{</span> | |
166 153 <span class="w">carp</span> <span class="q">"Warning: ${ClassName}->PerformDepthFirstSearch: No search performed: Vertex $RootVertexID doesn't exist..."</span><span class="sc">;</span> | |
167 154 <span class="k">return</span> <span class="k">undef</span><span class="sc">;</span> | |
168 155 <span class="s">}</span> | |
169 156 <span class="s">}</span> | |
170 157 <span class="k">return</span> <span class="i">$This</span><span class="i">->_PerformVertexSearch</span><span class="s">(</span><span class="q">"DFS"</span><span class="cm">,</span> <span class="i">$RootVertexID</span><span class="s">)</span><span class="sc">;</span> | |
171 158 <span class="s">}</span> | |
172 159 | |
173 160 <span class="c"># Perform a depth first search (DFS) with limit on depth...</span> | |
174 161 <span class="c">#</span> | |
175 <a name="PerformDepthFirstSearchWithLimit-"></a> 162 <span class="k">sub </span><span class="m">PerformDepthFirstSearchWithLimit</span> <span class="s">{</span> | |
176 163 <span class="k">my</span><span class="s">(</span><span class="i">$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> | |
177 164 | |
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> | |
179 166 <span class="w">carp</span> <span class="q">"Warning: ${ClassName}->PerformDepthFirstSearchWithLimit: No search performed: Depth limit must be specified..."</span><span class="sc">;</span> | |
180 167 <span class="k">return</span> <span class="k">undef</span><span class="sc">;</span> | |
181 168 <span class="s">}</span> | |
182 169 <span class="k">if</span> <span class="s">(</span><span class="i">$DepthLimit</span> < <span class="n">0</span><span class="s">)</span> <span class="s">{</span> | |
183 170 <span class="w">carp</span> <span class="q">"Warning: ${ClassName}->PerformDepthFirstSearchWithLimit: No search performed: Specified depth limit, $DepthLimit, must be a positive integer..."</span><span class="sc">;</span> | |
184 171 <span class="k">return</span> <span class="k">undef</span><span class="sc">;</span> | |
185 172 <span class="s">}</span> | |
186 173 <span class="k">if</span> <span class="s">(</span><span class="k">defined</span> <span class="i">$RootVertexID</span><span class="s">)</span> <span class="s">{</span> | |
187 174 <span class="k">if</span> <span class="s">(</span>!<span class="i">$This</span>->{<span class="w">Graph</span>}<span class="i">->HasVertex</span><span class="s">(</span><span class="i">$RootVertexID</span><span class="s">)</span><span class="s">)</span> <span class="s">{</span> | |
188 175 <span class="w">carp</span> <span class="q">"Warning: ${ClassName}->PerformDepthFirstSearchWithLimit: No search performed: Vertex $RootVertexID doesn't exist..."</span><span class="sc">;</span> | |
189 176 <span class="k">return</span> <span class="k">undef</span><span class="sc">;</span> | |
190 177 <span class="s">}</span> | |
191 178 <span class="s">}</span> | |
192 179 <span class="k">return</span> <span class="i">$This</span><span class="i">->_PerformVertexSearch</span><span class="s">(</span><span class="q">"DFSWithLimit"</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> | |
193 180 <span class="s">}</span> | |
194 181 | |
195 182 <span class="c"># Perform a breadth first search (BFS)...</span> | |
196 183 <span class="c">#</span> | |
197 <a name="PerformBreadthFirstSearch-"></a> 184 <span class="k">sub </span><span class="m">PerformBreadthFirstSearch</span> <span class="s">{</span> | |
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> | |
199 186 | |
200 187 <span class="k">if</span> <span class="s">(</span><span class="k">defined</span> <span class="i">$RootVertexID</span><span class="s">)</span> <span class="s">{</span> | |
201 188 <span class="k">if</span> <span class="s">(</span>!<span class="i">$This</span>->{<span class="w">Graph</span>}<span class="i">->HasVertex</span><span class="s">(</span><span class="i">$RootVertexID</span><span class="s">)</span><span class="s">)</span> <span class="s">{</span> | |
202 189 <span class="w">carp</span> <span class="q">"Warning: ${ClassName}->PerformBreadthFirstSearch: No search performed: Vertex $RootVertexID doesn't exist..."</span><span class="sc">;</span> | |
203 190 <span class="k">return</span> <span class="k">undef</span><span class="sc">;</span> | |
204 191 <span class="s">}</span> | |
205 192 <span class="s">}</span> | |
206 193 <span class="k">return</span> <span class="i">$This</span><span class="i">->_PerformVertexSearch</span><span class="s">(</span><span class="q">"BFS"</span><span class="cm">,</span> <span class="i">$RootVertexID</span><span class="s">)</span><span class="sc">;</span> | |
207 194 <span class="s">}</span> | |
208 195 | |
209 196 <span class="c"># Perform a breadth first search (BFS) with limit...</span> | |
210 197 <span class="c">#</span> | |
211 <a name="PerformBreadthFirstSearchWithLimit-"></a> 198 <span class="k">sub </span><span class="m">PerformBreadthFirstSearchWithLimit</span> <span class="s">{</span> | |
212 199 <span class="k">my</span><span class="s">(</span><span class="i">$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> | |
213 200 | |
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> | |
215 202 <span class="w">carp</span> <span class="q">"Warning: ${ClassName}->PerformBreadthFirstSearchWithLimit: No search performed: Depth limit must be specified..."</span><span class="sc">;</span> | |
216 203 <span class="k">return</span> <span class="k">undef</span><span class="sc">;</span> | |
217 204 <span class="s">}</span> | |
218 205 <span class="k">if</span> <span class="s">(</span><span class="i">$DepthLimit</span> < <span class="n">0</span><span class="s">)</span> <span class="s">{</span> | |
219 206 <span class="w">carp</span> <span class="q">"Warning: ${ClassName}->PerformBreadthFirstSearchWithLimit: No search performed: Specified depth limit, $DepthLimit, must be a positive integer..."</span><span class="sc">;</span> | |
220 207 <span class="k">return</span> <span class="k">undef</span><span class="sc">;</span> | |
221 208 <span class="s">}</span> | |
222 209 <span class="k">if</span> <span class="s">(</span><span class="k">defined</span> <span class="i">$RootVertexID</span><span class="s">)</span> <span class="s">{</span> | |
223 210 <span class="k">if</span> <span class="s">(</span>!<span class="i">$This</span>->{<span class="w">Graph</span>}<span class="i">->HasVertex</span><span class="s">(</span><span class="i">$RootVertexID</span><span class="s">)</span><span class="s">)</span> <span class="s">{</span> | |
224 211 <span class="w">carp</span> <span class="q">"Warning: ${ClassName}->PerformDepthFirstSearchWithLimit: No search performed: Vertex $RootVertexID doesn't exist..."</span><span class="sc">;</span> | |
225 212 <span class="k">return</span> <span class="k">undef</span><span class="sc">;</span> | |
226 213 <span class="s">}</span> | |
227 214 <span class="s">}</span> | |
228 215 <span class="k">return</span> <span class="i">$This</span><span class="i">->_PerformVertexSearch</span><span class="s">(</span><span class="q">"BFSWithLimit"</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> | |
229 216 <span class="s">}</span> | |
230 217 | |
231 218 <span class="c"># Perform appropriate vertex search...</span> | |
232 219 <span class="c">#</span> | |
233 <a name="_PerformVertexSearch-"></a> 220 <span class="k">sub </span><span class="m">_PerformVertexSearch</span> <span class="s">{</span> | |
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">$TargetVertexID</span><span class="s">)</span> = <span class="i">@_</span><span class="sc">;</span> | |
235 222 | |
236 223 <span class="c"># Setup search...</span> | |
237 224 <span class="i">$This</span>->{<span class="w">TraversalMode</span>} = <span class="q">'Vertex'</span><span class="sc">;</span> | |
238 225 <span class="i">$This</span>->{<span class="w">TraversalType</span>} = <span class="i">$SearchType</span><span class="sc">;</span> | |
239 226 | |
240 227 <span class="k">if</span> <span class="s">(</span><span class="k">defined</span> <span class="i">$RootVertexID</span><span class="s">)</span> <span class="s">{</span> | |
241 228 <span class="i">$This</span>->{<span class="w">RootVertex</span>} = <span class="i">$RootVertexID</span><span class="sc">;</span> | |
242 229 <span class="s">}</span> | |
243 230 <span class="k">if</span> <span class="s">(</span><span class="k">defined</span> <span class="i">$DepthLimit</span><span class="s">)</span> <span class="s">{</span> | |
244 231 <span class="i">$This</span>->{<span class="w">DepthLimit</span>} = <span class="i">$DepthLimit</span><span class="sc">;</span> | |
245 232 <span class="s">}</span> | |
246 233 <span class="k">if</span> <span class="s">(</span><span class="k">defined</span> <span class="i">$TargetVertexID</span><span class="s">)</span> <span class="s">{</span> | |
247 234 <span class="i">$This</span>->{<span class="w">TargetVertex</span>} = <span class="i">$TargetVertexID</span><span class="sc">;</span> | |
248 235 <span class="s">}</span> | |
249 236 | |
250 237 <span class="c"># Perform search...</span> | |
251 238 <span class="k">return</span> <span class="i">$This</span><span class="i">->_TraverseGraph</span><span class="s">(</span><span class="s">)</span><span class="sc">;</span> | |
252 239 <span class="s">}</span> | |
253 240 | |
254 241 <span class="c"># Perform DFS or BFS traversal with or without any limits...</span> | |
255 242 <span class="c">#</span> | |
256 <a name="_TraverseGraph-"></a> 243 <span class="k">sub </span><span class="m">_TraverseGraph</span> <span class="s">{</span> | |
257 244 <span class="k">my</span><span class="s">(</span><span class="i">$This</span><span class="s">)</span> = <span class="i">@_</span><span class="sc">;</span> | |
258 245 <span class="k">my</span><span class="s">(</span><span class="i">$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">$VertexID</span><span class="s">)</span><span class="sc">;</span> | |
259 246 | |
260 247 <span class="k">if</span> <span class="s">(</span><span class="i">$This</span>->{<span class="w">TraversalMode</span>} !~ <span class="q">/^(Vertex|Path|VertexNeighborhood)$/i</span><span class="s">)</span> <span class="s">{</span> | |
261 248 <span class="k">return</span> <span class="i">$This</span><span class="sc">;</span> | |
262 249 <span class="s">}</span> | |
263 250 | |
264 251 <span class="i">$ProcessingVertices</span> = <span class="n">1</span><span class="sc">;</span> | |
265 252 | |
266 253 <span class="j">VERTICES:</span> <span class="k">while</span> <span class="s">(</span><span class="i">$ProcessingVertices</span><span class="s">)</span> <span class="s">{</span> | |
267 254 <span class="c"># Set root vertex...</span> | |
268 255 <span class="k">if</span> <span class="s">(</span>!<span class="i">@</span>{<span class="i">$This</span>->{<span class="w">ActiveVertices</span>}}<span class="s">)</span> <span class="s">{</span> | |
269 256 <span class="k">my</span><span class="s">(</span><span class="i">$RootVertexID</span><span class="s">)</span><span class="sc">;</span> | |
270 257 | |
271 258 <span class="i">$RootVertexID</span> = <span class="i">$This</span><span class="i">->_GetRootVertex</span><span class="s">(</span><span class="s">)</span><span class="sc">;</span> | |
272 259 <span class="k">if</span> <span class="s">(</span>!<span class="k">defined</span> <span class="i">$RootVertexID</span><span class="s">)</span> <span class="s">{</span> | |
273 260 <span class="i">$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> | |
274 261 <span class="s">}</span> | |
275 262 <span class="i">$This</span><span class="i">->_ProcessVisitedVertex</span><span class="s">(</span><span class="i">$RootVertexID</span><span class="cm">,</span> <span class="i">$RootVertexID</span><span class="s">)</span><span class="sc">;</span> | |
276 263 <span class="s">}</span> | |
277 264 | |
278 265 <span class="c"># Get current active vertex...</span> | |
279 266 <span class="i">$CurrentVertexID</span> = <span class="i">$This</span><span class="i">->_GetActiveVertex</span><span class="s">(</span><span class="s">)</span><span class="sc">;</span> | |
280 267 <span class="k">if</span> <span class="s">(</span>!<span class="k">defined</span> <span class="i">$CurrentVertexID</span><span class="s">)</span> <span class="s">{</span> | |
281 268 <span class="i">$ProcessingVertices</span> = <span class="n">0</span><span class="sc">;</span> <span class="k">next</span> <span class="j">VERTICES</span><span class="sc">;</span> | |
282 269 <span class="s">}</span> | |
283 270 | |
284 271 <span class="c"># Get next available neighbor of current vertex...</span> | |
285 272 <span class="c">#</span> | |
286 273 <span class="i">$NeighborVertexID</span> = <span class="i">$This</span><span class="i">->_GetNeighborVertex</span><span class="s">(</span><span class="i">$CurrentVertexID</span><span class="s">)</span><span class="sc">;</span> | |
287 274 | |
288 275 <span class="c"># Process neighbor or current vertex...</span> | |
289 276 <span class="k">if</span> <span class="s">(</span><span class="k">defined</span> <span class="i">$NeighborVertexID</span><span class="s">)</span> <span class="s">{</span> | |
290 277 <span class="i">$This</span><span class="i">->_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> | |
291 278 <span class="s">}</span> | |
292 279 <span class="k">else</span> <span class="s">{</span> | |
293 280 <span class="c"># Finished with all neighbors for current vertex...</span> | |
294 281 <span class="i">$This</span><span class="i">->_ProcessFinishedVertex</span><span class="s">(</span><span class="i">$CurrentVertexID</span><span class="s">)</span><span class="sc">;</span> | |
295 282 <span class="s">}</span> | |
296 283 <span class="s">}</span> | |
297 284 <span class="k">return</span> <span class="i">$This</span><span class="sc">;</span> | |
298 285 <span class="s">}</span> | |
299 286 | |
300 287 <span class="c"># Get root vertex to start the search...</span> | |
301 288 <span class="c">#</span> | |
302 289 <span class="c"># Notes:</span> | |
303 290 <span class="c"># . User specification of root vertex forces traversal in a specific connected component</span> | |
304 291 <span class="c"># of graph; To traverse find all connected components, perform traversal without specification of</span> | |
305 292 <span class="c"># a root vertex.</span> | |
306 293 <span class="c">#</span> | |
307 <a name="_GetRootVertex-"></a> 294 <span class="k">sub </span><span class="m">_GetRootVertex</span> <span class="s">{</span> | |
308 295 <span class="k">my</span><span class="s">(</span><span class="i">$This</span><span class="s">)</span> = <span class="i">@_</span><span class="sc">;</span> | |
309 296 <span class="k">my</span><span class="s">(</span><span class="i">$RootVertexID</span><span class="s">)</span><span class="sc">;</span> | |
310 297 | |
311 298 <span class="c"># Check for specified root vertex and constrain traversal to specific connected</span> | |
312 299 <span class="c"># component by setting root limit...</span> | |
313 300 <span class="k">if</span> <span class="s">(</span><span class="k">exists</span> <span class="i">$This</span>->{<span class="w">RootVertex</span>}<span class="s">)</span> <span class="s">{</span> | |
314 301 <span class="i">$RootVertexID</span> = <span class="i">$This</span>->{<span class="w">RootVertex</span>}<span class="sc">;</span> | |
315 302 <span class="k">delete</span> <span class="i">$This</span>->{<span class="w">RootVertex</span>}<span class="sc">;</span> | |
316 303 <span class="i">$This</span>->{<span class="w">RootVertexSpecified</span>} = <span class="n">1</span><span class="sc">;</span> | |
317 304 | |
318 305 <span class="k">return</span> <span class="i">$RootVertexID</span><span class="sc">;</span> | |
319 306 <span class="s">}</span> | |
320 307 <span class="c"># Traversal limited to connected component containing specified root vertex...</span> | |
321 308 <span class="k">if</span> <span class="s">(</span><span class="k">exists</span> <span class="i">$This</span>->{<span class="w">RootVertexSpecified</span>}<span class="s">)</span> <span class="s">{</span> | |
322 309 <span class="k">return</span> <span class="k">undef</span><span class="sc">;</span> | |
323 310 <span class="s">}</span> | |
324 311 | |
325 312 <span class="c"># Use first vertex in sorted available vertices list to get root vertex. Vertex</span> | |
326 313 <span class="c"># with largest degree could also be used as root vertex. However, for all</span> | |
327 314 <span class="c"># practical purposes, any arbitrary vertex can be used as root vertex to</span> | |
328 315 <span class="c"># start search for another disconnected component of the graph.</span> | |
329 316 <span class="c">#</span> | |
330 317 <span class="k">my</span><span class="s">(</span><span class="i">@VerticesToVisit</span><span class="s">)</span><span class="sc">;</span> | |
331 318 | |
332 319 <span class="i">$RootVertexID</span> = <span class="k">undef</span><span class="sc">;</span> <span class="i">@VerticesToVisit</span> = <span class="s">(</span><span class="s">)</span><span class="sc">;</span> | |
333 320 <span class="i">@VerticesToVisit</span> = <span class="k">sort</span> <span class="s">{</span> <span class="i">$a</span> <=> <span class="i">$b</span> <span class="s">}</span> <span class="k">keys</span> <span class="i">%</span>{<span class="i">$This</span>->{<span class="w">VerticesToVisit</span>}}<span class="sc">;</span> | |
334 321 <span class="k">if</span> <span class="s">(</span><span class="i">@VerticesToVisit</span><span class="s">)</span> <span class="s">{</span> | |
335 322 <span class="i">$RootVertexID</span> = <span class="i">$VerticesToVisit</span>[<span class="n">0</span>]<span class="sc">;</span> | |
336 323 <span class="s">}</span> | |
337 324 <span class="k">return</span> <span class="i">$RootVertexID</span><span class="sc">;</span> | |
338 325 <span class="s">}</span> | |
339 326 | |
340 327 <span class="c"># Get current or new active vertex for DFS/BFS traversals...</span> | |
341 328 <span class="c">#</span> | |
342 <a name="_GetActiveVertex-"></a> 329 <span class="k">sub </span><span class="m">_GetActiveVertex</span> <span class="s">{</span> | |
343 330 <span class="k">my</span><span class="s">(</span><span class="i">$This</span><span class="s">)</span> = <span class="i">@_</span><span class="sc">;</span> | |
344 331 <span class="k">my</span><span class="s">(</span><span class="i">$ActiveVertexID</span><span class="s">)</span><span class="sc">;</span> | |
345 332 | |
346 333 <span class="i">$ActiveVertexID</span> = <span class="k">undef</span><span class="sc">;</span> | |
347 334 <span class="k">if</span> <span class="s">(</span><span class="i">$This</span>->{<span class="w">TraversalType</span>} =~ <span class="q">/^(DFS|DFSWithLimit)$/i</span><span class="s">)</span> <span class="s">{</span> | |
348 335 <span class="c"># For DFS, it's last vertex in LIFO queue...</span> | |
349 336 <span class="i">$ActiveVertexID</span> = <span class="i">$This</span>->{<span class="w">ActiveVertices</span>}[<span class="n">-1</span>]<span class="sc">;</span> | |
350 337 <span class="s">}</span> | |
351 338 <span class="k">elsif</span> <span class="s">(</span><span class="i">$This</span>->{<span class="w">TraversalType</span>} =~ <span class="q">/^(BFS|BFSWithLimit)$/i</span><span class="s">)</span> <span class="s">{</span> | |
352 339 <span class="c"># For BFS, it's first vertex in FIFO queue...</span> | |
353 340 <span class="i">$ActiveVertexID</span> = <span class="i">$This</span>->{<span class="w">ActiveVertices</span>}[<span class="n">0</span>]<span class="sc">;</span> | |
354 341 <span class="s">}</span> | |
355 342 <span class="k">return</span> <span class="i">$ActiveVertexID</span><span class="sc">;</span> | |
356 343 <span class="s">}</span> | |
357 344 | |
358 345 <span class="c"># Get available neigbor of specified vertex...</span> | |
359 346 <span class="c">#</span> | |
360 <a name="_GetNeighborVertex-"></a> 347 <span class="k">sub </span><span class="m">_GetNeighborVertex</span> <span class="s">{</span> | |
361 348 <span class="k">my</span><span class="s">(</span><span class="i">$This</span><span class="cm">,</span> <span class="i">$VertexID</span><span class="s">)</span> = <span class="i">@_</span><span class="sc">;</span> | |
362 349 | |
363 350 <span class="c"># Retrieve neighbors for vertex...</span> | |
364 351 <span class="k">if</span> <span class="s">(</span>!<span class="k">exists</span> <span class="i">$This</span>->{<span class="w">VerticesNeighbors</span>}{<span class="i">$VertexID</span>}<span class="s">)</span> <span class="s">{</span> | |
365 352 <span class="i">@</span>{<span class="i">$This</span>->{<span class="w">VerticesNeighbors</span>}{<span class="i">$VertexID</span>}} = <span class="s">(</span><span class="s">)</span><span class="sc">;</span> | |
366 353 | |
367 354 <span class="k">if</span> <span class="s">(</span><span class="k">exists</span> <span class="i">$This</span>->{<span class="w">DepthLimit</span>}<span class="s">)</span> <span class="s">{</span> | |
368 355 <span class="c"># Only collect neighbors to visit below specified depth limit...</span> | |
369 356 <span class="k">if</span> <span class="s">(</span><span class="i">$This</span>->{<span class="w">VerticesDepth</span>}{<span class="i">$VertexID</span>} < <span class="i">$This</span>->{<span class="w">DepthLimit</span>}<span class="s">)</span> <span class="s">{</span> | |
370 357 <span class="k">push</span> <span class="i">@</span>{<span class="i">$This</span>->{<span class="w">VerticesNeighbors</span>}{<span class="i">$VertexID</span>}}<span class="cm">,</span> <span class="i">$This</span>->{<span class="w">Graph</span>}<span class="i">->GetNeighbors</span><span class="s">(</span><span class="i">$VertexID</span><span class="s">)</span><span class="sc">;</span> | |
371 358 <span class="s">}</span> | |
372 359 <span class="k">else</span> <span class="s">{</span> | |
373 360 <span class="k">if</span> <span class="s">(</span>!<span class="k">exists</span> <span class="i">$This</span>->{<span class="w">RootVertexSpecified</span>}<span class="s">)</span> <span class="s">{</span> | |
374 361 <span class="c"># Mark all other downstream neighbor vertices to be ignored from any further</span> | |
375 362 <span class="c"># processing and avoid selection of a new root...</span> | |
376 363 <span class="i">$This</span><span class="i">->_IgnoreDownstreamNeighbors</span><span class="s">(</span><span class="i">$VertexID</span><span class="s">)</span><span class="sc">;</span> | |
377 364 <span class="s">}</span> | |
378 365 <span class="s">}</span> | |
379 366 <span class="s">}</span> | |
380 367 <span class="k">elsif</span> <span class="s">(</span><span class="k">exists</span> <span class="i">$This</span>->{<span class="w">TargetVertex</span>}<span class="s">)</span> <span class="s">{</span> | |
381 368 <span class="k">if</span> <span class="s">(</span><span class="i">$VertexID</span> != <span class="i">$This</span>->{<span class="w">TargetVertex</span>}<span class="s">)</span> <span class="s">{</span> | |
382 369 <span class="k">push</span> <span class="i">@</span>{<span class="i">$This</span>->{<span class="w">VerticesNeighbors</span>}{<span class="i">$VertexID</span>}}<span class="cm">,</span> <span class="i">$This</span>->{<span class="w">Graph</span>}<span class="i">->GetNeighbors</span><span class="s">(</span><span class="i">$VertexID</span><span class="s">)</span><span class="sc">;</span> | |
383 370 <span class="s">}</span> | |
384 371 <span class="s">}</span> | |
385 372 <span class="k">else</span> <span class="s">{</span> | |
386 373 <span class="k">push</span> <span class="i">@</span>{<span class="i">$This</span>->{<span class="w">VerticesNeighbors</span>}{<span class="i">$VertexID</span>}}<span class="cm">,</span> <span class="i">$This</span>->{<span class="w">Graph</span>}<span class="i">->GetNeighbors</span><span class="s">(</span><span class="i">$VertexID</span><span class="s">)</span><span class="sc">;</span> | |
387 374 <span class="s">}</span> | |
388 375 <span class="s">}</span> | |
389 376 | |
390 377 <span class="k">if</span> <span class="s">(</span><span class="i">$This</span>->{<span class="w">TraversalMode</span>} =~ <span class="q">/^Path$/i</span><span class="s">)</span> <span class="s">{</span> | |
391 378 <span class="c"># Get available neighbor for path search...</span> | |
392 379 <span class="k">return</span> <span class="i">$This</span><span class="i">->_GetNeighborVertexDuringPathTraversal</span><span class="s">(</span><span class="i">$VertexID</span><span class="s">)</span><span class="sc">;</span> | |
393 380 <span class="s">}</span> | |
394 381 <span class="k">elsif</span> <span class="s">(</span><span class="i">$This</span>->{<span class="w">TraversalMode</span>} =~ <span class="q">/^Vertex$/i</span><span class="s">)</span> <span class="s">{</span> | |
395 382 <span class="c"># Get unvisited neighbor for vertex search...</span> | |
396 383 <span class="k">return</span> <span class="i">$This</span><span class="i">->_GetNeighborVertexDuringVertexTraversal</span><span class="s">(</span><span class="i">$VertexID</span><span class="s">)</span><span class="sc">;</span> | |
397 384 <span class="s">}</span> | |
398 385 <span class="k">elsif</span> <span class="s">(</span><span class="i">$This</span>->{<span class="w">TraversalMode</span>} =~ <span class="q">/^VertexNeighborhood$/i</span><span class="s">)</span> <span class="s">{</span> | |
399 386 <span class="c"># Get available neighbor during vertex neighborhood search...</span> | |
400 387 <span class="k">return</span> <span class="i">$This</span><span class="i">->_GetNeighborVertexDuringVertexNeighborhoodTraversal</span><span class="s">(</span><span class="i">$VertexID</span><span class="s">)</span><span class="sc">;</span> | |
401 388 <span class="s">}</span> | |
402 389 <span class="k">return</span> <span class="k">undef</span><span class="sc">;</span> | |
403 390 <span class="s">}</span> | |
404 391 | |
405 392 <span class="c"># Get unvisited neighbor of specified vertex during vertex traversal...</span> | |
406 393 <span class="c">#</span> | |
407 <a name="_GetNeighborVertexDuringVertexTraversal-"></a> 394 <span class="k">sub </span><span class="m">_GetNeighborVertexDuringVertexTraversal</span> <span class="s">{</span> | |
408 395 <span class="k">my</span><span class="s">(</span><span class="i">$This</span><span class="cm">,</span> <span class="i">$VertexID</span><span class="s">)</span> = <span class="i">@_</span><span class="sc">;</span> | |
409 396 <span class="k">my</span><span class="s">(</span><span class="i">$NeighborVertexID</span><span class="cm">,</span> <span class="i">$UnvisitedNeighborVertexID</span><span class="s">)</span><span class="sc">;</span> | |
410 397 | |
411 398 <span class="c"># Get unvisited neighbor...</span> | |
412 399 <span class="i">$UnvisitedNeighborVertexID</span> = <span class="k">undef</span><span class="sc">;</span> | |
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>->{<span class="w">VerticesNeighbors</span>}{<span class="i">$VertexID</span>}}<span class="s">)</span> <span class="s">{</span> | |
414 401 <span class="k">if</span> <span class="s">(</span>!<span class="k">exists</span> <span class="i">$This</span>->{<span class="w">VisitedVertices</span>}{<span class="i">$NeighborVertexID</span>}<span class="s">)</span> <span class="s">{</span> | |
415 402 <span class="i">$UnvisitedNeighborVertexID</span> = <span class="i">$NeighborVertexID</span><span class="sc">;</span> | |
416 403 <span class="k">last</span> <span class="j">NEIGHBOR</span><span class="sc">;</span> | |
417 404 <span class="s">}</span> | |
418 405 <span class="s">}</span> | |
419 406 <span class="k">return</span> <span class="i">$UnvisitedNeighborVertexID</span><span class="sc">;</span> | |
420 407 <span class="s">}</span> | |
421 408 | |
422 409 <span class="c"># Get available neighbor of specified vertex during vertex neighborhood traversal...</span> | |
423 410 <span class="c">#</span> | |
424 <a name="_GetNeighborVertexDuringVertexNeighborhoodTraversal-"></a> 411 <span class="k">sub </span><span class="m">_GetNeighborVertexDuringVertexNeighborhoodTraversal</span> <span class="s">{</span> | |
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> | |
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> | |
427 414 | |
428 415 <span class="c"># Get available neighbor...</span> | |
429 416 <span class="i">$UnvisitedNeighborVertexID</span> = <span class="k">undef</span><span class="sc">;</span> | |
430 417 <span class="j">NEIGHBOR:</span> <span class="k">for</span> <span class="i">$NeighborVertexID</span> <span class="s">(</span><span class="i">@</span>{<span class="i">$This</span>->{<span class="w">VerticesNeighbors</span>}{<span class="i">$VertexID</span>}}<span class="s">)</span> <span class="s">{</span> | |
431 418 <span class="k">if</span> <span class="s">(</span>!<span class="k">exists</span> <span class="i">$This</span>->{<span class="w">VisitedVertices</span>}{<span class="i">$NeighborVertexID</span>}<span class="s">)</span> <span class="s">{</span> | |
432 419 <span class="i">$UnvisitedNeighborVertexID</span> = <span class="i">$NeighborVertexID</span><span class="sc">;</span> | |
433 420 <span class="k">last</span> <span class="j">NEIGHBOR</span><span class="sc">;</span> | |
434 421 <span class="s">}</span> | |
435 422 <span class="c"># Look for any unvisited edge back to visited vertex...</span> | |
436 423 <span class="k">if</span> <span class="s">(</span><span class="i">$This</span><span class="i">->_IsVisitedEdge</span><span class="s">(</span><span class="i">$VertexID</span><span class="cm">,</span> <span class="i">$NeighborVertexID</span><span class="s">)</span> || <span class="i">$This</span><span class="i">->_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> | |
437 424 <span class="k">next</span> <span class="j">NEIGHBOR</span><span class="sc">;</span> | |
438 425 <span class="s">}</span> | |
439 426 <span class="c"># Check its depth...</span> | |
440 427 <span class="k">if</span> <span class="s">(</span><span class="k">exists</span> <span class="i">$This</span>->{<span class="w">DepthLimit</span>}<span class="s">)</span> <span class="s">{</span> | |
441 428 <span class="k">if</span> <span class="s">(</span><span class="s">(</span><span class="i">$This</span>->{<span class="w">VerticesDepth</span>}{<span class="i">$VertexID</span>} + <span class="n">1</span><span class="s">)</span> > <span class="i">$This</span>->{<span class="w">DepthLimit</span>}<span class="s">)</span> <span class="s">{</span> | |
442 429 <span class="k">next</span> <span class="j">NEIGHBOR</span><span class="sc">;</span> | |
443 430 <span class="s">}</span> | |
444 431 <span class="s">}</span> | |
445 432 <span class="c"># Its an edge that makes a cycle during BFS search...</span> | |
446 433 <span class="k">if</span> <span class="s">(</span><span class="i">$This</span>->{<span class="w">AllowVertexCycles</span>}<span class="s">)</span> <span class="s">{</span> | |
447 434 <span class="i">$This</span>->{<span class="w">CycleClosureVertices</span>}{<span class="i">$NeighborVertexID</span>} = <span class="n">1</span><span class="sc">;</span> | |
448 435 <span class="i">$UnvisitedNeighborVertexID</span> = <span class="i">$NeighborVertexID</span><span class="sc">;</span> | |
449 436 <span class="k">last</span> <span class="j">NEIGHBOR</span><span class="sc">;</span> | |
450 437 <span class="s">}</span> | |
451 438 <span class="s">}</span> | |
452 439 <span class="k">return</span> <span class="i">$UnvisitedNeighborVertexID</span><span class="sc">;</span> | |
453 440 <span class="s">}</span> | |
454 441 | |
455 442 <span class="c"># Get available neighbor of specified vertex during path traversal...</span> | |
456 443 <span class="c">#</span> | |
457 <a name="_GetNeighborVertexDuringPathTraversal-"></a> 444 <span class="k">sub </span><span class="m">_GetNeighborVertexDuringPathTraversal</span> <span class="s">{</span> | |
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> | |
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> | |
460 447 | |
461 448 <span class="c"># Get unvisited neighbor...</span> | |
462 449 <span class="i">$UnvisitedNeighborVertexID</span> = <span class="k">undef</span><span class="sc">;</span> | |
463 450 <span class="j">NEIGHBOR:</span> <span class="k">for</span> <span class="i">$NeighborVertexID</span> <span class="s">(</span><span class="i">@</span>{<span class="i">$This</span>->{<span class="w">VerticesNeighbors</span>}{<span class="i">$VertexID</span>}}<span class="s">)</span> <span class="s">{</span> | |
464 451 <span class="k">if</span> <span class="s">(</span>!<span class="k">exists</span> <span class="i">$This</span>->{<span class="w">VisitedVertices</span>}{<span class="i">$NeighborVertexID</span>}<span class="s">)</span> <span class="s">{</span> | |
465 452 <span class="c"># An unvisited vertex...</span> | |
466 453 <span class="i">$UnvisitedNeighborVertexID</span> = <span class="i">$NeighborVertexID</span><span class="sc">;</span> | |
467 454 <span class="k">last</span> <span class="j">NEIGHBOR</span><span class="sc">;</span> | |
468 455 <span class="s">}</span> | |
469 456 <span class="c"># Look for any unvisited edge back to visited vertex...</span> | |
470 457 <span class="k">if</span> <span class="s">(</span><span class="i">$This</span><span class="i">->_IsVisitedEdge</span><span class="s">(</span><span class="i">$VertexID</span><span class="cm">,</span> <span class="i">$NeighborVertexID</span><span class="s">)</span> || <span class="i">$This</span><span class="i">->_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> | |
471 458 <span class="k">next</span> <span class="j">NEIGHBOR</span><span class="sc">;</span> | |
472 459 <span class="s">}</span> | |
473 460 <span class="c"># Check its depth...</span> | |
474 461 <span class="k">if</span> <span class="s">(</span><span class="k">exists</span> <span class="i">$This</span>->{<span class="w">DepthLimit</span>}<span class="s">)</span> <span class="s">{</span> | |
475 462 <span class="k">if</span> <span class="s">(</span><span class="s">(</span><span class="i">$This</span>->{<span class="w">VerticesDepth</span>}{<span class="i">$VertexID</span>} + <span class="n">1</span><span class="s">)</span> >= <span class="i">$This</span>->{<span class="w">DepthLimit</span>}<span class="s">)</span> <span class="s">{</span> | |
476 463 <span class="k">next</span> <span class="j">NEIGHBOR</span><span class="sc">;</span> | |
477 464 <span class="s">}</span> | |
478 465 <span class="s">}</span> | |
479 466 | |
480 467 <span class="c"># It's the edge final edge of a cycle in case $NeighborVertexID is already in the path; otherwise, it's</span> | |
481 468 <span class="c"># part of the path from a different direction in a cycle or a left over vertex during Limit search.</span> | |
482 469 <span class="c">#</span> | |
483 470 <span class="k">if</span> <span class="s">(</span><span class="i">$This</span><span class="i">->_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> | |
484 471 <span class="k">if</span> <span class="s">(</span><span class="i">$This</span>->{<span class="w">AllowPathCycles</span>}<span class="s">)</span> <span class="s">{</span> | |
485 472 <span class="i">$This</span>->{<span class="w">CycleClosureVertices</span>}{<span class="i">$NeighborVertexID</span>} = <span class="n">1</span><span class="sc">;</span> | |
486 473 <span class="i">$UnvisitedNeighborVertexID</span> = <span class="i">$NeighborVertexID</span><span class="sc">;</span> | |
487 474 <span class="k">last</span> <span class="j">NEIGHBOR</span><span class="sc">;</span> | |
488 475 <span class="s">}</span> | |
489 476 <span class="s">}</span> | |
490 477 <span class="k">else</span> <span class="s">{</span> | |
491 478 <span class="i">$UnvisitedNeighborVertexID</span> = <span class="i">$NeighborVertexID</span><span class="sc">;</span> | |
492 479 <span class="k">last</span> <span class="j">NEIGHBOR</span><span class="sc">;</span> | |
493 480 <span class="s">}</span> | |
494 481 <span class="s">}</span> | |
495 482 <span class="k">return</span> <span class="i">$UnvisitedNeighborVertexID</span><span class="sc">;</span> | |
496 483 <span class="s">}</span> | |
497 484 | |
498 485 <span class="c"># Process visited vertex...</span> | |
499 486 <span class="c">#</span> | |
500 <a name="_ProcessVisitedVertex-"></a> 487 <span class="k">sub </span><span class="m">_ProcessVisitedVertex</span> <span class="s">{</span> | |
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">$PredecessorVertexID</span><span class="s">)</span> = <span class="i">@_</span><span class="sc">;</span> | |
502 489 | |
503 490 <span class="k">if</span> <span class="s">(</span>!<span class="k">exists</span> <span class="i">$This</span>->{<span class="w">VisitedVertices</span>}{<span class="i">$VertexID</span>}<span class="s">)</span> <span class="s">{</span> | |
504 491 <span class="c"># Add it to active vertices list...</span> | |
505 492 <span class="k">push</span> <span class="i">@</span>{<span class="i">$This</span>->{<span class="w">ActiveVertices</span>}}<span class="cm">,</span> <span class="i">$VertexID</span><span class="sc">;</span> | |
506 493 | |
507 494 <span class="c"># Mark vertex as visited vertex and take it out from the list of vertices to visit...</span> | |
508 495 <span class="i">$This</span>->{<span class="w">VisitedVertices</span>}{<span class="i">$VertexID</span>} = <span class="n">1</span><span class="sc">;</span> | |
509 496 <span class="k">delete</span> <span class="i">$This</span>->{<span class="w">VerticesToVisit</span>}{<span class="i">$VertexID</span>}<span class="sc">;</span> | |
510 497 <span class="s">}</span> | |
511 498 | |
512 499 <span class="c"># Set up root vertex, predecessor vertex and distance from root...</span> | |
513 500 <span class="k">if</span> <span class="s">(</span><span class="i">$VertexID</span> == <span class="i">$PredecessorVertexID</span><span class="s">)</span> <span class="s">{</span> | |
514 501 <span class="i">$This</span>->{<span class="w">VerticesRoots</span>}{<span class="i">$VertexID</span>} = <span class="i">$VertexID</span><span class="sc">;</span> | |
515 502 | |
516 503 <span class="i">$This</span>->{<span class="w">VerticesPredecessors</span>}{<span class="i">$VertexID</span>} = <span class="i">$VertexID</span><span class="sc">;</span> | |
517 504 <span class="k">if</span> <span class="s">(</span>!<span class="k">exists</span> <span class="i">$This</span>->{<span class="w">VerticesSuccessors</span>}{<span class="i">$VertexID</span>}<span class="s">)</span> <span class="s">{</span> | |
518 505 <span class="i">@</span>{<span class="i">$This</span>->{<span class="w">VerticesSuccessors</span>}{<span class="i">$VertexID</span>}} = <span class="s">(</span><span class="s">)</span><span class="sc">;</span> | |
519 506 <span class="s">}</span> | |
520 507 | |
521 508 <span class="i">$This</span>->{<span class="w">VerticesDepth</span>}{<span class="i">$VertexID</span>} = <span class="n">0</span><span class="sc">;</span> | |
522 509 | |
523 510 <span class="k">if</span> <span class="s">(</span><span class="i">$This</span>->{<span class="w">TraversalMode</span>} =~ <span class="q">/^Path$/i</span><span class="s">)</span> <span class="s">{</span> | |
524 511 <span class="i">$This</span><span class="i">->_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> | |
525 512 <span class="s">}</span> | |
526 513 <span class="s">}</span> | |
527 514 <span class="k">else</span> <span class="s">{</span> | |
528 515 <span class="i">$This</span>->{<span class="w">VerticesRoots</span>}{<span class="i">$VertexID</span>} = <span class="i">$This</span>->{<span class="w">VerticesRoots</span>}{<span class="i">$PredecessorVertexID</span>}<span class="sc">;</span> | |
529 516 | |
530 517 <span class="i">$This</span>->{<span class="w">VerticesPredecessors</span>}{<span class="i">$VertexID</span>} = <span class="i">$PredecessorVertexID</span><span class="sc">;</span> | |
531 518 <span class="k">if</span> <span class="s">(</span>!<span class="k">exists</span> <span class="i">$This</span>->{<span class="w">VerticesSuccessors</span>}{<span class="i">$PredecessorVertexID</span>}<span class="s">)</span> <span class="s">{</span> | |
532 519 <span class="i">@</span>{<span class="i">$This</span>->{<span class="w">VerticesSuccessors</span>}{<span class="i">$PredecessorVertexID</span>}} = <span class="s">(</span><span class="s">)</span><span class="sc">;</span> | |
533 520 <span class="s">}</span> | |
534 521 <span class="k">push</span> <span class="i">@</span>{<span class="i">$This</span>->{<span class="w">VerticesSuccessors</span>}{<span class="i">$PredecessorVertexID</span>}}<span class="cm">,</span> <span class="i">$VertexID</span><span class="sc">;</span> | |
535 522 | |
536 523 <span class="k">if</span> <span class="s">(</span>!<span class="k">exists</span> <span class="i">$This</span>->{<span class="w">VerticesDepth</span>}{<span class="i">$VertexID</span>}<span class="s">)</span> <span class="s">{</span> | |
537 524 <span class="i">$This</span>->{<span class="w">VerticesDepth</span>}{<span class="i">$VertexID</span>} = <span class="i">$This</span>->{<span class="w">VerticesDepth</span>}{<span class="i">$PredecessorVertexID</span>} + <span class="n">1</span><span class="sc">;</span> | |
538 525 <span class="s">}</span> | |
539 526 | |
540 527 <span class="k">if</span> <span class="s">(</span><span class="i">$This</span>->{<span class="w">TraversalMode</span>} =~ <span class="q">/^Path$/i</span><span class="s">)</span> <span class="s">{</span> | |
541 528 <span class="i">$This</span><span class="i">->_ProcessVisitedPath</span><span class="s">(</span><span class="i">$VertexID</span><span class="cm">,</span> <span class="i">$PredecessorVertexID</span><span class="s">)</span><span class="sc">;</span> | |
542 529 <span class="i">$This</span><span class="i">->_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> | |
543 530 <span class="s">}</span> | |
544 531 <span class="k">elsif</span> <span class="s">(</span><span class="i">$This</span>->{<span class="w">TraversalMode</span>} =~ <span class="q">/^VertexNeighborhood$/i</span><span class="s">)</span> <span class="s">{</span> | |
545 532 <span class="i">$This</span><span class="i">->_ProcessVisitedEdge</span><span class="s">(</span><span class="i">$PredecessorVertexID</span><span class="cm">,</span> <span class="i">$VertexID</span><span class="s">)</span><span class="sc">;</span> | |
546 533 <span class="s">}</span> | |
547 534 <span class="s">}</span> | |
548 535 <span class="k">return</span> <span class="i">$This</span><span class="sc">;</span> | |
549 536 <span class="s">}</span> | |
550 537 | |
551 538 <span class="c"># Process visited path...</span> | |
552 539 <span class="c">#</span> | |
553 <a name="_ProcessVisitedPath-"></a> 540 <span class="k">sub </span><span class="m">_ProcessVisitedPath</span> <span class="s">{</span> | |
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">$PredecessorVertexID</span><span class="s">)</span> = <span class="i">@_</span><span class="sc">;</span> | |
555 542 | |
556 543 <span class="c"># Initialize VerticesPath...</span> | |
557 544 <span class="k">if</span> <span class="s">(</span>!<span class="k">exists</span> <span class="i">$This</span>->{<span class="w">VerticesPaths</span>}{<span class="i">$VertexID</span>}<span class="s">)</span> <span class="s">{</span> | |
558 545 <span class="i">@</span>{<span class="i">$This</span>->{<span class="w">VerticesPaths</span>}{<span class="i">$VertexID</span>}} = <span class="s">(</span><span class="s">)</span><span class="sc">;</span> | |
559 546 <span class="s">}</span> | |
560 547 | |
561 548 <span class="k">if</span> <span class="s">(</span><span class="i">$VertexID</span> == <span class="i">$PredecessorVertexID</span><span class="s">)</span> <span class="s">{</span> | |
562 549 <span class="c"># Starting of a path from root...</span> | |
563 550 <span class="k">push</span> <span class="i">@</span>{<span class="i">$This</span>->{<span class="w">VerticesPaths</span>}{<span class="i">$VertexID</span>}}<span class="cm">,</span> <span class="i">$VertexID</span><span class="sc">;</span> | |
564 551 <span class="s">}</span> | |
565 552 <span class="k">else</span> <span class="s">{</span> | |
566 553 <span class="c"># Setup path for a vertex using path information from predecessor vertex...</span> | |
567 554 <span class="k">if</span> <span class="s">(</span><span class="k">exists</span> <span class="i">$This</span>->{<span class="w">CycleClosureVertices</span>}{<span class="i">$PredecessorVertexID</span>}<span class="s">)</span> <span class="s">{</span> | |
568 555 <span class="c"># Start of a new path from predecessor vertex...</span> | |
569 556 <span class="k">push</span> <span class="i">@</span>{<span class="i">$This</span>->{<span class="w">VerticesPaths</span>}{<span class="i">$VertexID</span>}}<span class="cm">,</span> <span class="q">"${PredecessorVertexID}-${VertexID}"</span><span class="sc">;</span> | |
570 557 <span class="s">}</span> | |
571 558 <span class="k">else</span> <span class="s">{</span> | |
572 559 <span class="k">my</span><span class="s">(</span><span class="i">$PredecessorVertexPath</span><span class="s">)</span><span class="sc">;</span> | |
573 560 <span class="k">for</span> <span class="i">$PredecessorVertexPath</span> <span class="s">(</span><span class="i">@</span>{<span class="i">$This</span>->{<span class="w">VerticesPaths</span>}{<span class="i">$PredecessorVertexID</span>}}<span class="s">)</span> <span class="s">{</span> | |
574 561 <span class="k">push</span> <span class="i">@</span>{<span class="i">$This</span>->{<span class="w">VerticesPaths</span>}{<span class="i">$VertexID</span>}}<span class="cm">,</span> <span class="q">"${PredecessorVertexPath}-${VertexID}"</span><span class="sc">;</span> | |
575 562 <span class="s">}</span> | |
576 563 <span class="s">}</span> | |
577 564 <span class="s">}</span> | |
578 565 <span class="k">return</span> <span class="i">$This</span><span class="sc">;</span> | |
579 566 <span class="s">}</span> | |
580 567 | |
581 568 <span class="c"># Process visited edge...</span> | |
582 569 <span class="c">#</span> | |
583 <a name="_ProcessVisitedEdge-"></a> 570 <span class="k">sub </span><span class="m">_ProcessVisitedEdge</span> <span class="s">{</span> | |
584 571 <span class="k">my</span><span class="s">(</span><span class="i">$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> | |
585 572 | |
586 573 <span class="k">if</span> <span class="s">(</span>!<span class="k">exists</span> <span class="i">$This</span>->{<span class="w">VisitedEdges</span>}->{<span class="w">From</span>}->{<span class="i">$VertexID1</span>}<span class="s">)</span> <span class="s">{</span> | |
587 574 <span class="i">%</span>{<span class="i">$This</span>->{<span class="w">VisitedEdges</span>}->{<span class="w">From</span>}->{<span class="i">$VertexID1</span>}} = <span class="s">(</span><span class="s">)</span><span class="sc">;</span> | |
588 575 <span class="s">}</span> | |
589 576 <span class="i">$This</span>->{<span class="w">VisitedEdges</span>}->{<span class="w">From</span>}->{<span class="i">$VertexID1</span>}->{<span class="i">$VertexID2</span>} = <span class="i">$VertexID2</span><span class="sc">;</span> | |
590 577 | |
591 578 <span class="k">if</span> <span class="s">(</span>!<span class="k">exists</span> <span class="i">$This</span>->{<span class="w">VisitedEdges</span>}->{<span class="w">To</span>}->{<span class="i">$VertexID2</span>}<span class="s">)</span> <span class="s">{</span> | |
592 579 <span class="i">%</span>{<span class="i">$This</span>->{<span class="w">VisitedEdges</span>}->{<span class="w">To</span>}->{<span class="i">$VertexID2</span>}} = <span class="s">(</span><span class="s">)</span><span class="sc">;</span> | |
593 580 <span class="s">}</span> | |
594 581 <span class="i">$This</span>->{<span class="w">VisitedEdges</span>}->{<span class="w">To</span>}->{<span class="i">$VertexID2</span>}->{<span class="i">$VertexID1</span>} = <span class="i">$VertexID1</span><span class="sc">;</span> | |
595 582 | |
596 583 <span class="k">return</span> <span class="i">$This</span><span class="sc">;</span> | |
597 584 <span class="s">}</span> | |
598 585 | |
599 586 <span class="c"># Finished processing active vertex...</span> | |
600 587 <span class="c">#</span> | |
601 <a name="_ProcessFinishedVertex-"></a> 588 <span class="k">sub </span><span class="m">_ProcessFinishedVertex</span> <span class="s">{</span> | |
602 589 <span class="k">my</span><span class="s">(</span><span class="i">$This</span><span class="cm">,</span> <span class="i">$VertexID</span><span class="s">)</span> = <span class="i">@_</span><span class="sc">;</span> | |
603 590 | |
604 591 <span class="k">if</span> <span class="s">(</span>!<span class="k">exists</span> <span class="i">$This</span>->{<span class="w">FinishedVertices</span>}{<span class="i">$VertexID</span>}<span class="s">)</span> <span class="s">{</span> | |
605 592 <span class="i">$This</span>->{<span class="w">FinishedVertices</span>}{<span class="i">$VertexID</span>} = <span class="i">$VertexID</span><span class="sc">;</span> | |
606 593 <span class="c"># Add vertex to list of vertices found by traversal...</span> | |
607 594 <span class="k">push</span> <span class="i">@</span>{<span class="i">$This</span>->{<span class="w">Vertices</span>}}<span class="cm">,</span> <span class="i">$VertexID</span><span class="sc">;</span> | |
608 595 <span class="s">}</span> | |
609 596 | |
610 597 <span class="c"># Any active vertices left...</span> | |
611 598 <span class="k">if</span> <span class="s">(</span>!<span class="i">@</span>{<span class="i">$This</span>->{<span class="w">ActiveVertices</span>}}<span class="s">)</span> <span class="s">{</span> | |
612 599 <span class="k">return</span> <span class="i">$This</span><span class="sc">;</span> | |
613 600 <span class="s">}</span> | |
614 601 | |
615 602 <span class="c"># Take it off active vertices list...</span> | |
616 603 <span class="k">if</span> <span class="s">(</span><span class="i">$This</span>->{<span class="w">TraversalType</span>} =~ <span class="q">/^(DFS|DFSWithLimit)$/i</span><span class="s">)</span> <span class="s">{</span> | |
617 604 <span class="c"># For DFS, it's last vertex in LIFO queue...</span> | |
618 605 <span class="k">pop</span> <span class="i">@</span>{<span class="i">$This</span>->{<span class="w">ActiveVertices</span>}}<span class="sc">;</span> | |
619 606 <span class="s">}</span> | |
620 607 <span class="k">elsif</span> <span class="s">(</span><span class="i">$This</span>->{<span class="w">TraversalType</span>} =~ <span class="q">/^(BFS|BFSWithLimit)$/i</span><span class="s">)</span> <span class="s">{</span> | |
621 608 <span class="c"># For BFS, it's first vertex in FIFO queue...</span> | |
622 609 <span class="k">shift</span> <span class="i">@</span>{<span class="i">$This</span>->{<span class="w">ActiveVertices</span>}}<span class="sc">;</span> | |
623 610 <span class="s">}</span> | |
624 611 <span class="k">return</span> <span class="i">$This</span><span class="sc">;</span> | |
625 612 <span class="s">}</span> | |
626 613 | |
627 614 <span class="c"># Mark all other downstream neighbor vertices to be ignored from any further</span> | |
628 615 <span class="c"># processing...</span> | |
629 616 <span class="c">#</span> | |
630 <a name="_IgnoreDownstreamNeighbors-"></a> 617 <span class="k">sub </span><span class="m">_IgnoreDownstreamNeighbors</span> <span class="s">{</span> | |
631 618 <span class="k">my</span><span class="s">(</span><span class="i">$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> | |
632 619 | |
633 620 <span class="k">if</span> <span class="s">(</span><span class="k">exists</span> <span class="i">$This</span>->{<span class="w">VerticesToVisit</span>}{<span class="i">$VertexID</span>}<span class="s">)</span> <span class="s">{</span> | |
634 621 <span class="c"># Mark vertex as visited vertex and take it out from the list of vertices to visit...</span> | |
635 622 <span class="i">$This</span>->{<span class="w">VisitedVertices</span>}{<span class="i">$VertexID</span>} = <span class="n">1</span><span class="sc">;</span> | |
636 623 <span class="k">delete</span> <span class="i">$This</span>->{<span class="w">VerticesToVisit</span>}{<span class="i">$VertexID</span>}<span class="sc">;</span> | |
637 624 | |
638 625 <span class="k">if</span> <span class="s">(</span><span class="k">defined</span><span class="s">(</span><span class="i">$PredecessorVertexID</span><span class="s">)</span> && <span class="i">$This</span>->{<span class="w">TraversalMode</span>} =~ <span class="q">/^(Path|VertexNeighborhood)$/i</span><span class="s">)</span> <span class="s">{</span> | |
639 626 <span class="i">$This</span><span class="i">->_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> | |
640 627 <span class="s">}</span> | |
641 628 <span class="s">}</span> | |
642 629 <span class="k">my</span><span class="s">(</span><span class="i">$NeighborVertexID</span><span class="cm">,</span> <span class="i">@NeighborsVertexIDs</span><span class="s">)</span><span class="sc">;</span> | |
643 630 | |
644 631 <span class="i">@NeighborsVertexIDs</span> = <span class="s">(</span><span class="s">)</span><span class="sc">;</span> | |
645 632 <span class="i">@NeighborsVertexIDs</span> = <span class="i">$This</span>->{<span class="w">Graph</span>}<span class="i">->GetNeighbors</span><span class="s">(</span><span class="i">$VertexID</span><span class="s">)</span><span class="sc">;</span> | |
646 633 <span class="j">NEIGHBOR:</span> <span class="k">for</span> <span class="i">$NeighborVertexID</span> <span class="s">(</span><span class="i">@NeighborsVertexIDs</span><span class="s">)</span> <span class="s">{</span> | |
647 634 <span class="k">if</span> <span class="s">(</span>!<span class="k">exists</span> <span class="i">$This</span>->{<span class="w">VerticesToVisit</span>}{<span class="i">$NeighborVertexID</span>}<span class="s">)</span> <span class="s">{</span> | |
648 635 <span class="c"># Avoid going back to predecessor vertex which has already been ignored...</span> | |
649 636 <span class="k">next</span> <span class="j">NEIGHBOR</span><span class="sc">;</span> | |
650 637 <span class="s">}</span> | |
651 638 <span class="i">$This</span><span class="i">->_IgnoreDownstreamNeighbors</span><span class="s">(</span><span class="i">$NeighborVertexID</span><span class="cm">,</span> <span class="i">$VertexID</span><span class="s">)</span><span class="sc">;</span> | |
652 639 <span class="s">}</span> | |
653 640 <span class="k">return</span> <span class="i">$This</span><span class="sc">;</span> | |
654 641 <span class="s">}</span> | |
655 642 | |
656 643 <span class="c"># Is it a visited edge?</span> | |
657 644 <span class="c">#</span> | |
658 <a name="_IsVisitedEdge-"></a> 645 <span class="k">sub </span><span class="m">_IsVisitedEdge</span> <span class="s">{</span> | |
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">$VertexID2</span><span class="s">)</span> = <span class="i">@_</span><span class="sc">;</span> | |
660 647 | |
661 648 <span class="k">if</span> <span class="s">(</span><span class="k">exists</span> <span class="i">$This</span>->{<span class="w">VisitedEdges</span>}->{<span class="w">From</span>}->{<span class="i">$VertexID1</span>}<span class="s">)</span> <span class="s">{</span> | |
662 649 <span class="k">if</span> <span class="s">(</span><span class="k">exists</span> <span class="i">$This</span>->{<span class="w">VisitedEdges</span>}->{<span class="w">From</span>}->{<span class="i">$VertexID1</span>}->{<span class="i">$VertexID2</span>}<span class="s">)</span> <span class="s">{</span> | |
663 650 <span class="k">return</span> <span class="n">1</span><span class="sc">;</span> | |
664 651 <span class="s">}</span> | |
665 652 <span class="s">}</span> | |
666 653 <span class="k">elsif</span> <span class="s">(</span><span class="k">exists</span> <span class="i">$This</span>->{<span class="w">VisitedEdges</span>}->{<span class="w">To</span>}->{<span class="i">$VertexID2</span>}<span class="s">)</span> <span class="s">{</span> | |
667 654 <span class="k">if</span> <span class="s">(</span><span class="k">exists</span> <span class="i">$This</span>->{<span class="w">VisitedEdges</span>}->{<span class="w">To</span>}->{<span class="i">$VertexID2</span>}->{<span class="i">$VertexID1</span>}<span class="s">)</span> <span class="s">{</span> | |
668 655 <span class="k">return</span> <span class="n">1</span><span class="sc">;</span> | |
669 656 <span class="s">}</span> | |
670 657 <span class="s">}</span> | |
671 658 <span class="k">return</span> <span class="n">0</span><span class="sc">;</span> | |
672 659 <span class="s">}</span> | |
673 660 | |
674 661 <span class="c"># Is it a cycle closure edge?</span> | |
675 662 <span class="c">#</span> | |
676 663 <span class="c"># Notes:</span> | |
677 664 <span class="c"># . Presence of VertexID2 in DFS path traversed for VertexID1 make it a cycle</span> | |
678 665 <span class="c"># closure edge...</span> | |
679 666 <span class="c">#</span> | |
680 <a name="_IsCycleClosureEdge-"></a> 667 <span class="k">sub </span><span class="m">_IsCycleClosureEdge</span> <span class="s">{</span> | |
681 668 <span class="k">my</span><span class="s">(</span><span class="i">$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> | |
682 669 | |
683 670 <span class="k">if</span> <span class="s">(</span>!<span class="k">exists</span> <span class="i">$This</span>->{<span class="w">VerticesPaths</span>}{<span class="i">$VertexID1</span>}<span class="s">)</span> <span class="s">{</span> | |
684 671 <span class="k">return</span> <span class="n">0</span><span class="sc">;</span> | |
685 672 <span class="s">}</span> | |
686 673 <span class="k">my</span><span class="s">(</span><span class="i">$Path</span><span class="s">)</span><span class="sc">;</span> | |
687 674 <span class="k">for</span> <span class="i">$Path</span> <span class="s">(</span><span class="i">@</span>{<span class="i">$This</span>->{<span class="w">VerticesPaths</span>}{<span class="i">$VertexID1</span>}}<span class="s">)</span> <span class="s">{</span> | |
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$/</span><span class="s">)</span><span class="s">)</span> <span class="s">{</span> | |
689 676 <span class="k">return</span> <span class="n">1</span><span class="sc">;</span> | |
690 677 <span class="s">}</span> | |
691 678 <span class="s">}</span> | |
692 679 <span class="k">return</span> <span class="n">0</span><span class="sc">;</span> | |
693 680 <span class="s">}</span> | |
694 681 | |
695 682 <span class="c"># Search paths starting from a specified vertex with no sharing of edges in paths traversed.</span> | |
696 683 <span class="c"># By default, cycles are included in paths. A path containing a cycle is terminated at a vertex</span> | |
697 684 <span class="c"># completing the cycle.</span> | |
698 685 <span class="c">#</span> | |
699 <a name="PerformPathsSearch-"></a> 686 <span class="k">sub </span><span class="m">PerformPathsSearch</span> <span class="s">{</span> | |
700 687 <span class="k">my</span><span class="s">(</span><span class="i">$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> | |
701 688 | |
702 689 <span class="c"># Make sure start vertex is defined...</span> | |
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> | |
704 691 <span class="w">carp</span> <span class="q">"Warning: ${ClassName}->PerformPathsSearch: No paths search performed: Start vertex must be specified..."</span><span class="sc">;</span> | |
705 692 <span class="k">return</span> <span class="k">undef</span><span class="sc">;</span> | |
706 693 <span class="s">}</span> | |
707 694 | |
708 695 <span class="c"># Make sure start vertex is valid...</span> | |
709 696 <span class="k">if</span> <span class="s">(</span>!<span class="i">$This</span>->{<span class="w">Graph</span>}<span class="i">->HasVertex</span><span class="s">(</span><span class="i">$StartVertexID</span><span class="s">)</span><span class="s">)</span> <span class="s">{</span> | |
710 697 <span class="w">carp</span> <span class="q">"Warning: ${ClassName}->PerformPathsSearch: No paths search performed: Vertex $StartVertexID doesn't exist..."</span><span class="sc">;</span> | |
711 698 <span class="k">return</span> <span class="k">undef</span><span class="sc">;</span> | |
712 699 <span class="s">}</span> | |
713 700 | |
714 701 <span class="k">if</span> <span class="s">(</span>!<span class="k">defined</span> <span class="i">$AllowCycles</span><span class="s">)</span> <span class="s">{</span> | |
715 702 <span class="i">$AllowCycles</span> = <span class="n">1</span><span class="sc">;</span> | |
716 703 <span class="s">}</span> | |
717 704 | |
718 705 <span class="c"># Perform paths search...</span> | |
719 706 <span class="k">return</span> <span class="i">$This</span><span class="i">->_PerformPathsSearch</span><span class="s">(</span><span class="q">"AllLengths"</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> | |
720 707 <span class="s">}</span> | |
721 708 | |
722 709 <span class="c"># Search paths starting from a specified vertex with length upto a specified length</span> | |
723 710 <span class="c"># with no sharing of edges in paths traversed...</span> | |
724 711 <span class="c">#</span> | |
725 712 <span class="c"># By default, cycles are included in paths. A path containing a cycle is terminated at a vertex</span> | |
726 713 <span class="c"># completing the cycle.</span> | |
727 714 <span class="c">#</span> | |
728 <a name="PerformPathsSearchWithLengthUpto-"></a> 715 <span class="k">sub </span><span class="m">PerformPathsSearchWithLengthUpto</span> <span class="s">{</span> | |
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> | |
730 717 | |
731 718 <span class="k">return</span> <span class="i">$This</span><span class="i">->_PerformPathsSearchWithLength</span><span class="s">(</span><span class="q">"LengthUpto"</span><span class="cm">,</span> <span class="i">$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> | |
732 719 <span class="s">}</span> | |
733 720 | |
734 721 <span class="c"># Search paths starting from a specified vertex with specified length</span> | |
735 722 <span class="c"># with no sharing of edges in paths traversed...</span> | |
736 723 <span class="c">#</span> | |
737 724 <span class="c"># By default, cycles are included in paths. A path containing a cycle is terminated at a vertex</span> | |
738 725 <span class="c"># completing the cycle.</span> | |
739 726 <span class="c">#</span> | |
740 <a name="PerformPathsSearchWithLength-"></a> 727 <span class="k">sub </span><span class="m">PerformPathsSearchWithLength</span> <span class="s">{</span> | |
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> | |
742 729 | |
743 730 <span class="k">return</span> <span class="i">$This</span><span class="i">->_PerformPathsSearchWithLength</span><span class="s">(</span><span class="q">"Length"</span><span class="cm">,</span> <span class="i">$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> | |
744 731 <span class="s">}</span> | |
745 732 | |
746 733 | |
747 734 <span class="c"># Search paths starting from a specified vertex with length upto a specified length</span> | |
748 735 <span class="c"># with no sharing of edges in paths traversed...</span> | |
749 736 <span class="c">#</span> | |
750 737 <span class="c"># By default, cycles are included in paths. A path containing a cycle is terminated at a vertex</span> | |
751 738 <span class="c"># completing the cycle.</span> | |
752 739 <span class="c">#</span> | |
753 <a name="_PerformPathsSearchWithLength-"></a> 740 <span class="k">sub </span><span class="m">_PerformPathsSearchWithLength</span> <span class="s">{</span> | |
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">$AllowCycles</span><span class="s">)</span> = <span class="i">@_</span><span class="sc">;</span> | |
755 742 | |
756 743 <span class="c"># Make sure both start vertex and length are defined...</span> | |
757 744 <span class="k">if</span> <span class="s">(</span>!<span class="k">defined</span> <span class="i">$StartVertexID</span><span class="s">)</span> <span class="s">{</span> | |
758 745 <span class="w">carp</span> <span class="q">"Warning: ${ClassName}->_PerformPathsSearchWithLength: No paths search performed: Start vertex must be specified..."</span><span class="sc">;</span> | |
759 746 <span class="k">return</span> <span class="k">undef</span><span class="sc">;</span> | |
760 747 <span class="s">}</span> | |
761 748 <span class="k">if</span> <span class="s">(</span>!<span class="k">defined</span> <span class="i">$Length</span><span class="s">)</span> <span class="s">{</span> | |
762 749 <span class="w">carp</span> <span class="q">"Warning: ${ClassName}->_PerformPathsSearchWithLength: No paths search performed: Length must be specified..."</span><span class="sc">;</span> | |
763 750 <span class="k">return</span> <span class="k">undef</span><span class="sc">;</span> | |
764 751 <span class="s">}</span> | |
765 752 | |
766 753 <span class="k">if</span> <span class="s">(</span>!<span class="k">defined</span> <span class="i">$AllowCycles</span><span class="s">)</span> <span class="s">{</span> | |
767 754 <span class="i">$AllowCycles</span> = <span class="n">1</span><span class="sc">;</span> | |
768 755 <span class="s">}</span> | |
769 756 | |
770 757 <span class="c"># Make sure both start vertex and length are valid...</span> | |
771 758 <span class="k">if</span> <span class="s">(</span>!<span class="i">$This</span>->{<span class="w">Graph</span>}<span class="i">->HasVertex</span><span class="s">(</span><span class="i">$StartVertexID</span><span class="s">)</span><span class="s">)</span> <span class="s">{</span> | |
772 759 <span class="w">carp</span> <span class="q">"Warning: ${ClassName}->_PerformPathsSearchWithLength: No paths search performed: Vertex $StartVertexID doesn't exist..."</span><span class="sc">;</span> | |
773 760 <span class="k">return</span> <span class="k">undef</span><span class="sc">;</span> | |
774 761 <span class="s">}</span> | |
775 762 | |
776 763 <span class="k">if</span> <span class="s">(</span><span class="i">$Length</span> < <span class="n">1</span><span class="s">)</span> <span class="s">{</span> | |
777 764 <span class="w">carp</span> <span class="q">"Warning: ${ClassName}->_PerformPathsSearchWithLength: No paths search performed: Specified length, $Length, must be a positive integer with value greater than 1..."</span><span class="sc">;</span> | |
778 765 <span class="k">return</span> <span class="k">undef</span><span class="sc">;</span> | |
779 766 <span class="s">}</span> | |
780 767 | |
781 768 <span class="c"># Perform paths search...</span> | |
782 769 <span class="k">return</span> <span class="i">$This</span><span class="i">->_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> | |
783 770 <span class="s">}</span> | |
784 771 | |
785 772 <span class="c"># Search all paths starting from a specified vertex with sharing of edges in paths traversed...</span> | |
786 773 <span class="c"># By default, cycles are included in paths. A path containing a cycle is terminated at a vertex</span> | |
787 774 <span class="c"># completing the cycle.</span> | |
788 775 <span class="c">#</span> | |
789 <a name="PerformAllPathsSearch-"></a> 776 <span class="k">sub </span><span class="m">PerformAllPathsSearch</span> <span class="s">{</span> | |
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">$AllowCycles</span><span class="s">)</span> = <span class="i">@_</span><span class="sc">;</span> | |
791 778 | |
792 779 <span class="c"># Make sure start vertex is defined...</span> | |
793 780 <span class="k">if</span> <span class="s">(</span>!<span class="k">defined</span> <span class="i">$StartVertexID</span><span class="s">)</span> <span class="s">{</span> | |
794 781 <span class="w">carp</span> <span class="q">"Warning: ${ClassName}->PerformAllPathsSearch: No paths search performed: Start vertex must be specified..."</span><span class="sc">;</span> | |
795 782 <span class="k">return</span> <span class="k">undef</span><span class="sc">;</span> | |
796 783 <span class="s">}</span> | |
797 784 | |
798 785 <span class="c"># Make sure start vertex is valid...</span> | |
799 786 <span class="k">if</span> <span class="s">(</span>!<span class="i">$This</span>->{<span class="w">Graph</span>}<span class="i">->HasVertex</span><span class="s">(</span><span class="i">$StartVertexID</span><span class="s">)</span><span class="s">)</span> <span class="s">{</span> | |
800 787 <span class="w">carp</span> <span class="q">"Warning: ${ClassName}->PerformAllPathsSearch: No paths search performed: Vertex $StartVertexID doesn't exist..."</span><span class="sc">;</span> | |
801 788 <span class="k">return</span> <span class="k">undef</span><span class="sc">;</span> | |
802 789 <span class="s">}</span> | |
803 790 | |
804 791 <span class="k">if</span> <span class="s">(</span>!<span class="k">defined</span> <span class="i">$AllowCycles</span><span class="s">)</span> <span class="s">{</span> | |
805 792 <span class="i">$AllowCycles</span> = <span class="n">1</span><span class="sc">;</span> | |
806 793 <span class="s">}</span> | |
807 794 | |
808 795 <span class="c"># Perform paths search...</span> | |
809 796 <span class="k">return</span> <span class="i">$This</span><span class="i">->_PerformAllPathsSearch</span><span class="s">(</span><span class="q">"AllLengths"</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> | |
810 797 <span class="s">}</span> | |
811 798 | |
812 799 <span class="c"># Search all paths starting from a specified vertex with length upto a specified length with sharing of</span> | |
813 800 <span class="c"># edges in paths traversed.</span> | |
814 801 <span class="c">#</span> | |
815 802 <span class="c"># By default, cycles are included in paths. A path containing a cycle is terminated at a vertex</span> | |
816 803 <span class="c"># completing the cycle.</span> | |
817 804 <span class="c">#</span> | |
818 <a name="PerformAllPathsSearchWithLengthUpto-"></a> 805 <span class="k">sub </span><span class="m">PerformAllPathsSearchWithLengthUpto</span> <span class="s">{</span> | |
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> | |
820 807 | |
821 808 <span class="k">return</span> <span class="i">$This</span><span class="i">->_PerformAllPathsSearchWithLength</span><span class="s">(</span><span class="q">"LengthUpto"</span><span class="cm">,</span> <span class="i">$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> | |
822 809 <span class="s">}</span> | |
823 810 | |
824 811 <span class="c"># Search all paths starting from a specified vertex with specified length with sharing of</span> | |
825 812 <span class="c"># edges in paths traversed.</span> | |
826 813 <span class="c">#</span> | |
827 814 <span class="c"># By default, cycles are included in paths. A path containing a cycle is terminated at a vertex</span> | |
828 815 <span class="c"># completing the cycle.</span> | |
829 816 <span class="c">#</span> | |
830 <a name="PerformAllPathsSearchWithLength-"></a> 817 <span class="k">sub </span><span class="m">PerformAllPathsSearchWithLength</span> <span class="s">{</span> | |
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> | |
832 819 | |
833 820 <span class="k">return</span> <span class="i">$This</span><span class="i">->_PerformAllPathsSearchWithLength</span><span class="s">(</span><span class="q">"Length"</span><span class="cm">,</span> <span class="i">$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> | |
834 821 <span class="s">}</span> | |
835 822 | |
836 823 <span class="c"># Search all paths starting from a specified vertex with length upto a specified length with sharing of</span> | |
837 824 <span class="c"># edges in paths traversed.</span> | |
838 825 <span class="c">#</span> | |
839 826 <span class="c"># By default, cycles are included in paths. A path containing a cycle is terminated at a vertex</span> | |
840 827 <span class="c"># completing the cycle.</span> | |
841 828 <span class="c">#</span> | |
842 <a name="_PerformAllPathsSearchWithLength-"></a> 829 <span class="k">sub </span><span class="m">_PerformAllPathsSearchWithLength</span> <span class="s">{</span> | |
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">$AllowCycles</span><span class="s">)</span> = <span class="i">@_</span><span class="sc">;</span> | |
844 831 | |
845 832 <span class="c"># Make sure both start vertex and length are defined...</span> | |
846 833 <span class="k">if</span> <span class="s">(</span>!<span class="k">defined</span> <span class="i">$StartVertexID</span><span class="s">)</span> <span class="s">{</span> | |
847 834 <span class="w">carp</span> <span class="q">"Warning: ${ClassName}->_PerformAllPathsSearchWithLength: No paths search performed: Start vertex must be specified..."</span><span class="sc">;</span> | |
848 835 <span class="k">return</span> <span class="k">undef</span><span class="sc">;</span> | |
849 836 <span class="s">}</span> | |
850 837 <span class="k">if</span> <span class="s">(</span>!<span class="k">defined</span> <span class="i">$Length</span><span class="s">)</span> <span class="s">{</span> | |
851 838 <span class="w">carp</span> <span class="q">"Warning: ${ClassName}->_PerformAllPathsSearchWithLength: No paths search performed: Length must be specified..."</span><span class="sc">;</span> | |
852 839 <span class="k">return</span> <span class="k">undef</span><span class="sc">;</span> | |
853 840 <span class="s">}</span> | |
854 841 | |
855 842 <span class="k">if</span> <span class="s">(</span>!<span class="k">defined</span> <span class="i">$AllowCycles</span><span class="s">)</span> <span class="s">{</span> | |
856 843 <span class="i">$AllowCycles</span> = <span class="n">1</span><span class="sc">;</span> | |
857 844 <span class="s">}</span> | |
858 845 | |
859 846 <span class="c"># Make sure both start vertex and length are valid...</span> | |
860 847 <span class="k">if</span> <span class="s">(</span>!<span class="i">$This</span>->{<span class="w">Graph</span>}<span class="i">->HasVertex</span><span class="s">(</span><span class="i">$StartVertexID</span><span class="s">)</span><span class="s">)</span> <span class="s">{</span> | |
861 848 <span class="w">carp</span> <span class="q">"Warning: ${ClassName}->_PerformAllPathsSearchWithLength: No paths search performed: Vertex $StartVertexID doesn't exist..."</span><span class="sc">;</span> | |
862 849 <span class="k">return</span> <span class="k">undef</span><span class="sc">;</span> | |
863 850 <span class="s">}</span> | |
864 851 | |
865 852 <span class="k">if</span> <span class="s">(</span><span class="i">$Length</span> < <span class="n">1</span><span class="s">)</span> <span class="s">{</span> | |
866 853 <span class="w">carp</span> <span class="q">"Warning: ${ClassName}->_PerformAllPathsSearchWithLength: No paths search performed: Specified length, $Length, must be a positive integer with value greater than 1..."</span><span class="sc">;</span> | |
867 854 <span class="k">return</span> <span class="k">undef</span><span class="sc">;</span> | |
868 855 <span class="s">}</span> | |
869 856 | |
870 857 <span class="c"># Perform paths search...</span> | |
871 858 <span class="k">return</span> <span class="i">$This</span><span class="i">->_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> | |
872 859 <span class="s">}</span> | |
873 860 | |
874 861 <span class="c"># Search paths between two vertices...</span> | |
875 862 <span class="c">#</span> | |
876 <a name="PerformPathsSearchBetween-"></a> 863 <span class="k">sub </span><span class="m">PerformPathsSearchBetween</span> <span class="s">{</span> | |
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">$EndVertexID</span><span class="s">)</span> = <span class="i">@_</span><span class="sc">;</span> | |
878 865 | |
879 866 <span class="c"># Make sure start and end vertices are defined...</span> | |
880 867 <span class="k">if</span> <span class="s">(</span>!<span class="k">defined</span> <span class="i">$StartVertexID</span><span class="s">)</span> <span class="s">{</span> | |
881 868 <span class="w">carp</span> <span class="q">"Warning: ${ClassName}->PerformPathsSearchBetweeb: No paths search performed: Start vertex must be specified..."</span><span class="sc">;</span> | |
882 869 <span class="k">return</span> <span class="k">undef</span><span class="sc">;</span> | |
883 870 <span class="s">}</span> | |
884 871 <span class="k">if</span> <span class="s">(</span>!<span class="k">defined</span> <span class="i">$EndVertexID</span><span class="s">)</span> <span class="s">{</span> | |
885 872 <span class="w">carp</span> <span class="q">"Warning: ${ClassName}->PerformPathsSearchBetweeb: No paths search performed: EndVertex vertex must be specified..."</span><span class="sc">;</span> | |
886 873 <span class="k">return</span> <span class="k">undef</span><span class="sc">;</span> | |
887 874 <span class="s">}</span> | |
888 875 <span class="c"># Make sure start and end vertices are valid...</span> | |
889 876 <span class="k">if</span> <span class="s">(</span>!<span class="i">$This</span>->{<span class="w">Graph</span>}<span class="i">->HasVertex</span><span class="s">(</span><span class="i">$StartVertexID</span><span class="s">)</span><span class="s">)</span> <span class="s">{</span> | |
890 877 <span class="w">carp</span> <span class="q">"Warning: ${ClassName}->PerformPathsSearchBetween: No paths search performed: Vertex $StartVertexID doesn't exist..."</span><span class="sc">;</span> | |
891 878 <span class="k">return</span> <span class="k">undef</span><span class="sc">;</span> | |
892 879 <span class="s">}</span> | |
893 880 <span class="k">if</span> <span class="s">(</span>!<span class="i">$This</span>->{<span class="w">Graph</span>}<span class="i">->HasVertex</span><span class="s">(</span><span class="i">$EndVertexID</span><span class="s">)</span><span class="s">)</span> <span class="s">{</span> | |
894 881 <span class="w">carp</span> <span class="q">"Warning: ${ClassName}->PerformPathsSearchBetween: No paths search performed: Vertex $EndVertexID doesn't exist..."</span><span class="sc">;</span> | |
895 882 <span class="k">return</span> <span class="k">undef</span><span class="sc">;</span> | |
896 883 <span class="s">}</span> | |
897 884 | |
898 885 <span class="c"># Perform paths search...</span> | |
899 886 <span class="k">return</span> <span class="i">$This</span><span class="i">->_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> | |
900 887 <span class="s">}</span> | |
901 888 | |
902 889 <span class="c"># Search paths starting from root vertex with no sharing of edges...</span> | |
903 890 <span class="c">#</span> | |
904 891 <span class="c"># Notes:</span> | |
905 892 <span class="c"># . Possible paths searche modes are: DFSPathsWithLimit, DFSPaths. And each</span> | |
906 893 <span class="c"># of these modes supports any combination of two options: CommonEdges, Cycles.</span> | |
907 894 <span class="c"># Default for CommonEdges - No; Cycles - No.</span> | |
908 895 <span class="c">#</span> | |
909 <a name="_PerformPathsSearch-"></a> 896 <span class="k">sub </span><span class="m">_PerformPathsSearch</span> <span class="s">{</span> | |
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">$Length</span><span class="s">)</span> = <span class="i">@_</span><span class="sc">;</span> | |
911 898 | |
912 899 <span class="c"># Perform DFS path search...</span> | |
913 900 | |
914 901 <span class="i">$This</span>->{<span class="w">TraversalMode</span>} = <span class="q">'Path'</span><span class="sc">;</span> | |
915 902 | |
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> | |
917 904 <span class="k">my</span><span class="s">(</span><span class="i">$DepthLimit</span><span class="s">)</span><span class="sc">;</span> | |
918 905 | |
919 906 <span class="i">$DepthLimit</span> = <span class="i">$Length</span> - <span class="n">1</span><span class="sc">;</span> | |
920 907 <span class="i">$This</span>->{<span class="w">TraversalType</span>} = <span class="q">'DFSWithLimit'</span><span class="sc">;</span> | |
921 908 <span class="i">$This</span>->{<span class="w">DepthLimit</span>} = <span class="i">$DepthLimit</span><span class="sc">;</span> | |
922 909 <span class="s">}</span> | |
923 910 <span class="k">else</span> <span class="s">{</span> | |
924 911 <span class="i">$This</span>->{<span class="w">TraversalType</span>} = <span class="q">'DFS'</span><span class="sc">;</span> | |
925 912 <span class="s">}</span> | |
926 913 <span class="k">if</span> <span class="s">(</span><span class="k">defined</span> <span class="i">$RootVertexID</span><span class="s">)</span> <span class="s">{</span> | |
927 914 <span class="i">$This</span>->{<span class="w">RootVertex</span>} = <span class="i">$RootVertexID</span><span class="sc">;</span> | |
928 915 <span class="s">}</span> | |
929 916 | |
930 917 <span class="i">$This</span>->{<span class="w">AllowPathCycles</span>} = <span class="i">$AllowCycles</span><span class="sc">;</span> | |
931 918 | |
932 919 <span class="c"># Perform search...</span> | |
933 920 <span class="i">$This</span><span class="i">->_TraverseGraph</span><span class="s">(</span><span class="s">)</span><span class="sc">;</span> | |
934 921 | |
935 922 <span class="c"># Make sure traversal did get the root vertex...</span> | |
936 923 <span class="k">if</span> <span class="s">(</span>!<span class="k">exists</span> <span class="i">$This</span>->{<span class="w">VerticesDepth</span>}{<span class="i">$RootVertexID</span>}<span class="s">)</span> <span class="s">{</span> | |
937 924 <span class="k">return</span> <span class="i">$This</span><span class="sc">;</span> | |
938 925 <span class="s">}</span> | |
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> | |
940 927 <span class="k">push</span> <span class="i">@</span>{<span class="i">$This</span>->{<span class="w">Paths</span>}}<span class="cm">,</span> <span class="i">$This</span><span class="i">->_CollectPathsTraversedDuringPathsSearchWithLength</span><span class="s">(</span><span class="i">$Length</span><span class="s">)</span><span class="sc">;</span> | |
941 928 <span class="s">}</span> | |
942 929 <span class="k">else</span> <span class="s">{</span> | |
943 930 <span class="k">push</span> <span class="i">@</span>{<span class="i">$This</span>->{<span class="w">Paths</span>}}<span class="cm">,</span> <span class="i">$This</span><span class="i">->_CollectPathsTraversedDuringPathsSearch</span><span class="s">(</span><span class="s">)</span><span class="sc">;</span> | |
944 931 <span class="s">}</span> | |
945 932 | |
946 933 <span class="k">return</span> <span class="i">$This</span><span class="sc">;</span> | |
947 934 <span class="s">}</span> | |
948 935 | |
949 936 <span class="c"># Search all paths starting from root vertex with sharing of edges...</span> | |
950 937 <span class="c">#</span> | |
951 <a name="_PerformAllPathsSearch-"></a> 938 <span class="k">sub </span><span class="m">_PerformAllPathsSearch</span> <span class="s">{</span> | |
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">$Length</span><span class="s">)</span> = <span class="i">@_</span><span class="sc">;</span> | |
953 940 | |
954 941 <span class="c"># Perform DFS path search...</span> | |
955 942 | |
956 943 <span class="i">$This</span>->{<span class="w">TraversalMode</span>} = <span class="q">'AllPaths'</span><span class="sc">;</span> | |
957 944 | |
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> | |
959 946 <span class="k">my</span><span class="s">(</span><span class="i">$DepthLimit</span><span class="s">)</span><span class="sc">;</span> | |
960 947 | |
961 948 <span class="i">$DepthLimit</span> = <span class="i">$Length</span> - <span class="n">1</span><span class="sc">;</span> | |
962 949 <span class="i">$This</span>->{<span class="w">TraversalType</span>} = <span class="q">'DFSWithLimit'</span><span class="sc">;</span> | |
963 950 <span class="i">$This</span>->{<span class="w">DepthLimit</span>} = <span class="i">$DepthLimit</span><span class="sc">;</span> | |
964 951 <span class="s">}</span> | |
965 952 <span class="k">else</span> <span class="s">{</span> | |
966 953 <span class="i">$This</span>->{<span class="w">TraversalType</span>} = <span class="q">'DFS'</span><span class="sc">;</span> | |
967 954 <span class="s">}</span> | |
968 955 <span class="i">$This</span>->{<span class="w">RootVertex</span>} = <span class="i">$RootVertexID</span><span class="sc">;</span> | |
969 956 <span class="i">$This</span>->{<span class="w">AllowPathCycles</span>} = <span class="i">$AllowCycles</span><span class="sc">;</span> | |
970 957 | |
971 958 <span class="c"># Traverse all paths search using DFS search...</span> | |
972 959 <span class="i">$This</span><span class="i">->_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> | |
973 960 | |
974 961 <span class="k">return</span> <span class="i">$This</span><span class="sc">;</span> | |
975 962 <span class="s">}</span> | |
976 963 | |
977 964 <span class="c"># Travese all paths in graph starting from a specified root vertex...</span> | |
978 965 <span class="c">#</span> | |
979 <a name="_TraverseAllPathsInGraph-"></a> 966 <span class="k">sub </span><span class="m">_TraverseAllPathsInGraph</span> <span class="s">{</span> | |
980 967 <span class="k">my</span><span class="s">(</span><span class="i">$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> | |
981 968 | |
982 969 <span class="k">if</span> <span class="s">(</span><span class="i">$This</span>->{<span class="w">TraversalMode</span>} !~ <span class="q">/^AllPaths$/i</span><span class="s">)</span> <span class="s">{</span> | |
983 970 <span class="k">return</span> <span class="i">$This</span><span class="sc">;</span> | |
984 971 <span class="s">}</span> | |
985 972 <span class="k">my</span><span class="s">(</span><span class="i">$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">$CurrentPath</span><span class="s">)</span><span class="sc">;</span> | |
986 973 | |
987 974 <span class="i">$CurrentVertexID</span> = <span class="i">$This</span>->{<span class="w">RootVertex</span>}<span class="sc">;</span> | |
988 975 <span class="i">$PredecessorVertexID</span> = <span class="i">$CurrentVertexID</span><span class="sc">;</span> | |
989 976 <span class="i">$CurrentDepth</span> = <span class="n">0</span><span class="sc">;</span> | |
990 977 <span class="i">$CurrentPath</span> = <span class="q">"$CurrentVertexID"</span><span class="sc">;</span> | |
991 978 | |
992 979 <span class="i">$This</span><span class="i">->_TraverseAllPaths</span><span class="s">(</span><span class="i">$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">$CurrentPath</span><span class="s">)</span><span class="sc">;</span> | |
993 980 | |
994 981 <span class="k">if</span> <span class="s">(</span><span class="i">$Mode</span> =~ <span class="q">/^Length$/i</span><span class="s">)</span> <span class="s">{</span> | |
995 982 <span class="k">push</span> <span class="i">@</span>{<span class="i">$This</span>->{<span class="w">Paths</span>}}<span class="cm">,</span> <span class="i">$This</span><span class="i">->_CollectPathsTraversedDuringPathsSearchWithLength</span><span class="s">(</span><span class="i">$Length</span><span class="s">)</span><span class="sc">;</span> | |
996 983 <span class="s">}</span> | |
997 984 <span class="k">else</span> <span class="s">{</span> | |
998 985 <span class="k">push</span> <span class="i">@</span>{<span class="i">$This</span>->{<span class="w">Paths</span>}}<span class="cm">,</span> <span class="i">$This</span><span class="i">->_CollectPathsTraversedDuringPathsSearch</span><span class="s">(</span><span class="s">)</span><span class="sc">;</span> | |
999 986 <span class="s">}</span> | |
1000 987 | |
1001 988 <span class="k">return</span> <span class="i">$This</span><span class="sc">;</span> | |
1002 989 <span class="s">}</span> | |
1003 990 | |
1004 991 <span class="c"># Traverse and collect all paths recuresively..</span> | |
1005 992 <span class="c">#</span> | |
1006 <a name="_TraverseAllPaths-"></a> 993 <span class="k">sub </span><span class="m">_TraverseAllPaths</span> <span class="s">{</span> | |
1007 994 <span class="k">my</span><span class="s">(</span><span class="i">$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> | |
1008 995 | |
1009 996 <span class="c"># Save path traversed for current vertex..</span> | |
1010 997 <span class="k">if</span> <span class="s">(</span>!<span class="k">exists</span> <span class="i">$This</span>->{<span class="w">VerticesPaths</span>}{<span class="i">$CurrentVertexID</span>}<span class="s">)</span> <span class="s">{</span> | |
1011 998 <span class="i">@</span>{<span class="i">$This</span>->{<span class="w">VerticesPaths</span>}{<span class="i">$CurrentVertexID</span>}} = <span class="s">(</span><span class="s">)</span><span class="sc">;</span> | |
1012 999 <span class="i">$This</span>->{<span class="w">VerticesDepth</span>}{<span class="i">$CurrentVertexID</span>} = <span class="n">0</span><span class="sc">;</span> | |
1013 1000 <span class="s">}</span> | |
1014 1001 <span class="k">push</span> <span class="i">@</span>{<span class="i">$This</span>->{<span class="w">VerticesPaths</span>}{<span class="i">$CurrentVertexID</span>}}<span class="cm">,</span> <span class="i">$CurrentPath</span><span class="sc">;</span> | |
1015 1002 <span class="i">$This</span>->{<span class="w">VerticesDepth</span>}{<span class="i">$CurrentVertexID</span>} = <span class="i">$CurrentDepth</span><span class="sc">;</span> | |
1016 1003 | |
1017 1004 <span class="i">$CurrentDepth</span>++<span class="sc">;</span> | |
1018 1005 <span class="k">if</span> <span class="s">(</span><span class="k">exists</span> <span class="i">$This</span>->{<span class="w">DepthLimit</span>}<span class="s">)</span> <span class="s">{</span> | |
1019 1006 <span class="k">if</span> <span class="s">(</span><span class="i">$CurrentDepth</span> > <span class="i">$This</span>->{<span class="w">DepthLimit</span>}<span class="s">)</span> <span class="s">{</span> | |
1020 1007 <span class="c"># Nothing more to do...</span> | |
1021 1008 <span class="k">return</span> <span class="i">$This</span><span class="sc">;</span> | |
1022 1009 <span class="s">}</span> | |
1023 1010 <span class="s">}</span> | |
1024 1011 <span class="k">my</span><span class="s">(</span><span class="i">$NeighborVertexID</span><span class="cm">,</span> <span class="i">$NewPath</span><span class="s">)</span><span class="sc">;</span> | |
1025 1012 | |
1026 1013 <span class="j">NEIGHBOR:</span> <span class="k">for</span> <span class="i">$NeighborVertexID</span> <span class="s">(</span><span class="i">$This</span>->{<span class="w">Graph</span>}<span class="i">->GetNeighbors</span><span class="s">(</span><span class="i">$CurrentVertexID</span><span class="s">)</span><span class="s">)</span> <span class="s">{</span> | |
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> | |
1028 1015 <span class="k">next</span> <span class="j">NEIGHBOR</span><span class="sc">;</span> | |
1029 1016 <span class="s">}</span> | |
1030 1017 <span class="k">if</span> <span class="s">(</span><span class="i">$This</span><span class="i">->_IsVertexInTraversedPath</span><span class="s">(</span><span class="i">$NeighborVertexID</span><span class="cm">,</span> <span class="i">$CurrentPath</span><span class="s">)</span><span class="s">)</span> <span class="s">{</span> | |
1031 1018 <span class="c"># It's a cycle...</span> | |
1032 1019 <span class="k">if</span> <span class="s">(</span><span class="i">$This</span>->{<span class="w">AllowPathCycles</span>}<span class="s">)</span> <span class="s">{</span> | |
1033 1020 <span class="i">$NewPath</span> = <span class="q">"${CurrentPath}-${NeighborVertexID}"</span><span class="sc">;</span> | |
1034 1021 <span class="k">if</span> <span class="s">(</span>!<span class="k">exists</span> <span class="i">$This</span>->{<span class="w">VerticesPaths</span>}{<span class="i">$NeighborVertexID</span>}<span class="s">)</span> <span class="s">{</span> | |
1035 1022 <span class="i">@</span>{<span class="i">$This</span>->{<span class="w">VerticesPaths</span>}{<span class="i">$NeighborVertexID</span>}} = <span class="s">(</span><span class="s">)</span><span class="sc">;</span> | |
1036 1023 <span class="s">}</span> | |
1037 1024 <span class="k">push</span> <span class="i">@</span>{<span class="i">$This</span>->{<span class="w">VerticesPaths</span>}{<span class="i">$NeighborVertexID</span>}}<span class="cm">,</span> <span class="i">$NewPath</span><span class="sc">;</span> | |
1038 1025 <span class="s">}</span> | |
1039 1026 <span class="k">next</span> <span class="j">NEIGHBOR</span><span class="sc">;</span> | |
1040 1027 <span class="s">}</span> | |
1041 1028 <span class="i">$NewPath</span> = <span class="q">"${CurrentPath}-${NeighborVertexID}"</span><span class="sc">;</span> | |
1042 1029 <span class="i">$This</span><span class="i">->_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> | |
1043 1030 <span class="s">}</span> | |
1044 1031 <span class="k">return</span> <span class="i">$This</span><span class="sc">;</span> | |
1045 1032 <span class="s">}</span> | |
1046 1033 | |
1047 1034 <span class="c"># Is vertex already in traversed path?</span> | |
1048 1035 <span class="c">#</span> | |
1049 <a name="_IsVertexInTraversedPath-"></a>1036 <span class="k">sub </span><span class="m">_IsVertexInTraversedPath</span> <span class="s">{</span> | |
1050 1037 <span class="k">my</span><span class="s">(</span><span class="i">$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> | |
1051 1038 | |
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$/</span><span class="s">)</span> ? <span class="n">1</span> <span class="co">:</span> <span class="n">0</span><span class="sc">;</span> | |
1053 1040 <span class="s">}</span> | |
1054 1041 | |
1055 1042 <span class="c"># Collect all paths traversed during Path TraversalMode and sort 'em in</span> | |
1056 1043 <span class="c"># ascending order of lengths</span> | |
1057 1044 <span class="c">#</span> | |
1058 <a name="_CollectPathsTraversedDuringPathsSearch-"></a>1045 <span class="k">sub </span><span class="m">_CollectPathsTraversedDuringPathsSearch</span> <span class="s">{</span> | |
1059 1046 <span class="k">my</span><span class="s">(</span><span class="i">$This</span><span class="s">)</span> = <span class="i">@_</span><span class="sc">;</span> | |
1060 1047 <span class="k">my</span><span class="s">(</span><span class="i">$VertexID</span><span class="cm">,</span> <span class="i">@Paths</span><span class="cm">,</span> <span class="i">@SortedPaths</span><span class="s">)</span><span class="sc">;</span> | |
1061 1048 | |
1062 1049 <span class="i">@Paths</span> = <span class="s">(</span><span class="s">)</span><span class="sc">;</span> <span class="i">@SortedPaths</span> = <span class="s">(</span><span class="s">)</span><span class="sc">;</span> | |
1063 1050 | |
1064 1051 <span class="c"># Create path objects from path vertex strings...</span> | |
1065 1052 <span class="k">for</span> <span class="i">$VertexID</span> <span class="s">(</span><span class="k">keys</span> <span class="i">%</span>{<span class="i">$This</span>->{<span class="w">VerticesPaths</span>}}<span class="s">)</span> <span class="s">{</span> | |
1066 1053 <span class="k">push</span> <span class="i">@Paths</span><span class="cm">,</span> <span class="k">map</span> <span class="s">{</span> <span class="i">new</span> <span class="i">Graph::Path</span><span class="s">(</span><span class="k">split</span> <span class="q">/-/</span><span class="cm">,</span> <span class="i">$_</span><span class="s">)</span> <span class="s">}</span> <span class="i">@</span>{<span class="i">$This</span>->{<span class="w">VerticesPaths</span>}{<span class="i">$VertexID</span>}}<span class="sc">;</span> | |
1067 1054 <span class="s">}</span> | |
1068 1055 | |
1069 1056 <span class="c"># Sort paths in ascending order of lengths...</span> | |
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">$a</span><span class="i">->GetLength</span><span class="s">(</span><span class="s">)</span> <=> <span class="i">$b</span><span class="i">->GetLength</span><span class="s">(</span><span class="s">)</span> <span class="s">}</span> <span class="i">@Paths</span><span class="sc">;</span> | |
1071 1058 | |
1072 1059 <span class="k">return</span> <span class="i">@SortedPaths</span><span class="sc">;</span> | |
1073 1060 <span class="s">}</span> | |
1074 1061 | |
1075 1062 <span class="c"># Collect paths traversed during Path TraversalMode with specific length...</span> | |
1076 1063 <span class="c">#</span> | |
1077 <a name="_CollectPathsTraversedDuringPathsSearchWithLength-"></a>1064 <span class="k">sub </span><span class="m">_CollectPathsTraversedDuringPathsSearchWithLength</span> <span class="s">{</span> | |
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> | |
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">$PathString</span><span class="cm">,</span> <span class="i">@VertexIDs</span><span class="cm">,</span> <span class="i">@Paths</span><span class="s">)</span><span class="sc">;</span> | |
1080 1067 | |
1081 1068 <span class="i">@Paths</span> = <span class="s">(</span><span class="s">)</span><span class="sc">;</span> | |
1082 1069 <span class="i">$Depth</span> = <span class="i">$Length</span> - <span class="n">1</span><span class="sc">;</span> | |
1083 1070 | |
1084 1071 <span class="c"># Create path objects from path vertex strings...</span> | |
1085 1072 <span class="j">VERTEXID:</span> <span class="k">for</span> <span class="i">$VertexID</span> <span class="s">(</span><span class="k">keys</span> <span class="i">%</span>{<span class="i">$This</span>->{<span class="w">VerticesPaths</span>}}<span class="s">)</span> <span class="s">{</span> | |
1086 1073 <span class="k">if</span> <span class="s">(</span><span class="i">$This</span>->{<span class="w">VerticesDepth</span>}{<span class="i">$VertexID</span>} != <span class="i">$Depth</span><span class="s">)</span> <span class="s">{</span> | |
1087 1074 <span class="k">next</span> <span class="j">VERTEXID</span><span class="sc">;</span> | |
1088 1075 <span class="s">}</span> | |
1089 1076 <span class="c"># For vertices involved in cycles, the path might also contain some shorter paths. So check</span> | |
1090 1077 <span class="c"># the lengths before its collection...</span> | |
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>->{<span class="w">VerticesPaths</span>}{<span class="i">$VertexID</span>}}<span class="s">)</span> <span class="s">{</span> | |
1092 1079 <span class="i">@VertexIDs</span> = <span class="k">split</span> <span class="q">/-/</span><span class="cm">,</span> <span class="i">$PathString</span><span class="sc">;</span> | |
1093 1080 <span class="k">if</span> <span class="s">(</span><span class="i">$Length</span> != <span class="i">@VertexIDs</span><span class="s">)</span> <span class="s">{</span> | |
1094 1081 <span class="k">next</span> <span class="j">PATHSTRING</span><span class="sc">;</span> | |
1095 1082 <span class="s">}</span> | |
1096 1083 <span class="k">push</span> <span class="i">@Paths</span><span class="cm">,</span> <span class="i">new</span> <span class="i">Graph::Path</span><span class="s">(</span><span class="i">@VertexIDs</span><span class="s">)</span><span class="sc">;</span> | |
1097 1084 <span class="s">}</span> | |
1098 1085 <span class="s">}</span> | |
1099 1086 <span class="k">return</span> <span class="i">@Paths</span><span class="sc">;</span> | |
1100 1087 <span class="s">}</span> | |
1101 1088 | |
1102 1089 <span class="c"># Collect paths traversed during Vertex TraversalMode...</span> | |
1103 1090 <span class="c">#</span> | |
1104 <a name="_CollectPathsTraversedDuringVertexSearch-"></a>1091 <span class="k">sub </span><span class="m">_CollectPathsTraversedDuringVertexSearch</span> <span class="s">{</span> | |
1105 1092 <span class="k">my</span><span class="s">(</span><span class="i">$This</span><span class="cm">,</span> <span class="i">$RootVertexID</span><span class="s">)</span> = <span class="i">@_</span><span class="sc">;</span> | |
1106 1093 <span class="k">my</span><span class="s">(</span><span class="i">$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> | |
1107 1094 <span class="i">@Paths</span> = <span class="s">(</span><span class="s">)</span><span class="sc">;</span> | |
1108 1095 | |
1109 1096 <span class="c"># Get vertices at specific depths...</span> | |
1110 1097 <span class="i">@VerticesAtDepth</span> = <span class="s">(</span><span class="s">)</span><span class="sc">;</span> | |
1111 1098 <span class="i">@VerticesAtDepth</span> = <span class="i">$This</span><span class="i">->_CollectVerticesAtSpecificDepths</span><span class="s">(</span><span class="s">)</span><span class="sc">;</span> | |
1112 1099 <span class="k">if</span> <span class="s">(</span>!<span class="i">@VerticesAtDepth</span><span class="s">)</span> <span class="s">{</span> | |
1113 1100 <span class="k">return</span> <span class="i">@Paths</span><span class="sc">;</span> | |
1114 1101 <span class="s">}</span> | |
1115 1102 | |
1116 1103 <span class="c"># Make sure search found only one root vertex and it corresponds to</span> | |
1117 1104 <span class="c"># what was specified...</span> | |
1118 1105 <span class="i">$Depth</span> = <span class="n">0</span><span class="sc">;</span> | |
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>]} > <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> | |
1120 1107 <span class="w">carp</span> <span class="q">"Warning: ${ClassName}->_PerformPathsSearch: No paths found: Root vertex, $VerticesAtDepth[$Depth][0], identified by paths traversal doen't match specified root vertex $RootVertexID..."</span><span class="sc">;</span> | |
1121 1108 <span class="k">return</span> <span class="i">@Paths</span><span class="sc">;</span> | |
1122 1109 <span class="s">}</span> | |
1123 1110 | |
1124 1111 <span class="c"># Setup root vertex at depth 0. And set its path...</span> | |
1125 1112 <span class="k">my</span><span class="s">(</span><span class="i">$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> | |
1126 1113 <span class="i">%PathAtVertex</span> = <span class="s">(</span><span class="s">)</span><span class="sc">;</span> | |
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">$RootVertexID</span><span class="s">)</span><span class="sc">;</span> | |
1128 1115 | |
1129 1116 <span class="k">for</span> <span class="i">$Depth</span> <span class="s">(</span><span class="n">0</span> .. <span class="i">$#VerticesAtDepth</span><span class="s">)</span> <span class="s">{</span> | |
1130 1117 <span class="c"># Go over all vertices at current depth...</span> | |
1131 1118 <span class="j">VERTEX:</span> <span class="k">for</span> <span class="i">$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> | |
1132 1119 <span class="k">if</span> <span class="s">(</span>!<span class="k">exists</span> <span class="i">$This</span>->{<span class="w">VerticesSuccessors</span>}{<span class="i">$VertexID</span>}<span class="s">)</span> <span class="s">{</span> | |
1133 1120 <span class="k">next</span> <span class="j">VERTEX</span><span class="sc">;</span> | |
1134 1121 <span class="s">}</span> | |
1135 1122 <span class="c"># Get vertices for current path...</span> | |
1136 1123 <span class="i">@VertexIDs</span> = <span class="s">(</span><span class="s">)</span><span class="sc">;</span> | |
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">->GetVertices</span><span class="sc">;</span> | |
1138 1125 | |
1139 1126 <span class="c"># Expand path to successor vertex found during traversal...</span> | |
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>->{<span class="w">VerticesSuccessors</span>}{<span class="i">$VertexID</span>}}<span class="s">)</span> <span class="s">{</span> | |
1141 1128 <span class="i">$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> | |
1142 1129 <span class="i">$Path</span><span class="i">->AddVertex</span><span class="s">(</span><span class="i">$SuccessorVertexID</span><span class="s">)</span><span class="sc">;</span> | |
1143 1130 <span class="i">$PathAtVertex</span>{<span class="i">$SuccessorVertexID</span>} = <span class="i">$Path</span><span class="sc">;</span> | |
1144 1131 <span class="s">}</span> | |
1145 1132 <span class="s">}</span> | |
1146 1133 <span class="s">}</span> | |
1147 1134 <span class="c"># Sort paths in ascending order of lengths...</span> | |
1148 1135 <span class="k">push</span> <span class="i">@Paths</span><span class="cm">,</span> <span class="k">sort</span> <span class="s">{</span> <span class="i">$a</span><span class="i">->GetLength</span><span class="s">(</span><span class="s">)</span> <=> <span class="i">$b</span><span class="i">->GetLength</span><span class="s">(</span><span class="s">)</span> <span class="s">}</span> <span class="k">values</span> <span class="i">%PathAtVertex</span><span class="sc">;</span> | |
1149 1136 | |
1150 1137 <span class="k">return</span> <span class="i">@Paths</span><span class="sc">;</span> | |
1151 1138 <span class="s">}</span> | |
1152 1139 | |
1153 1140 <span class="c"># Collect vertices at specific depths. Depth values start from 0...</span> | |
1154 1141 <span class="c">#</span> | |
1155 <a name="_CollectVerticesAtSpecificDepths-"></a>1142 <span class="k">sub </span><span class="m">_CollectVerticesAtSpecificDepths</span> <span class="s">{</span> | |
1156 1143 <span class="k">my</span><span class="s">(</span><span class="i">$This</span><span class="s">)</span> = <span class="i">@_</span><span class="sc">;</span> | |
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> | |
1158 1145 | |
1159 1146 <span class="i">@VerticesAtDepth</span> = <span class="s">(</span><span class="s">)</span><span class="sc">;</span> | |
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">$This</span>->{<span class="w">VerticesDepth</span>}}<span class="s">)</span> <span class="s">{</span> | |
1161 1148 <span class="k">push</span> <span class="i">@</span>{<span class="i">$VerticesAtDepth</span>[<span class="i">$Depth</span>]}<span class="cm">,</span> <span class="i">$VertexID</span><span class="sc">;</span> | |
1162 1149 <span class="s">}</span> | |
1163 1150 <span class="k">return</span> <span class="i">@VerticesAtDepth</span><span class="sc">;</span> | |
1164 1151 <span class="s">}</span> | |
1165 1152 | |
1166 1153 <span class="c"># Collect vertices, along with their successors, at specific depths and return a list containing references to</span> | |
1167 1154 <span class="c"># lists with first value corresponding to vertex ID and second value a reference to a list containing</span> | |
1168 1155 <span class="c"># its successors.</span> | |
1169 1156 <span class="c">#</span> | |
1170 1157 <span class="c"># Depth values start from 0...</span> | |
1171 1158 <span class="c">#</span> | |
1172 <a name="_CollectVerticesWithSuccessorsAtSpecificDepths-"></a>1159 <span class="k">sub </span><span class="m">_CollectVerticesWithSuccessorsAtSpecificDepths</span> <span class="s">{</span> | |
1173 1160 <span class="k">my</span><span class="s">(</span><span class="i">$This</span><span class="s">)</span> = <span class="i">@_</span><span class="sc">;</span> | |
1174 1161 <span class="k">my</span><span class="s">(</span><span class="i">$VertexID</span><span class="cm">,</span> <span class="i">$Depth</span><span class="cm">,</span> <span class="i">@VerticesWithSuccessorsAtDepth</span><span class="s">)</span><span class="sc">;</span> | |
1175 1162 | |
1176 1163 <span class="i">@VerticesWithSuccessorsAtDepth</span> = <span class="s">(</span><span class="s">)</span><span class="sc">;</span> | |
1177 1164 <span class="k">while</span> <span class="s">(</span><span class="s">(</span><span class="i">$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>->{<span class="w">VerticesDepth</span>}}<span class="s">)</span> <span class="s">{</span> | |
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> | |
1179 1166 | |
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> | |
1181 1168 <span class="k">if</span> <span class="s">(</span><span class="k">exists</span> <span class="i">$This</span>->{<span class="w">VerticesSuccessors</span>}{<span class="i">$VertexID</span>}<span class="s">)</span> <span class="s">{</span> | |
1182 1169 <span class="k">push</span> <span class="i">@VertexSuccessors</span><span class="cm">,</span> <span class="i">@</span>{<span class="i">$This</span>->{<span class="w">VerticesSuccessors</span>}{<span class="i">$VertexID</span>}}<span class="sc">;</span> | |
1183 1170 <span class="s">}</span> | |
1184 1171 <span class="k">push</span> <span class="i">@VertexWithSuccessors</span><span class="cm">,</span> <span class="s">(</span><span class="i">$VertexID</span><span class="cm">,</span> \<span class="i">@VertexSuccessors</span><span class="s">)</span><span class="sc">;</span> | |
1185 1172 <span class="c"># Multiple entries for a vertex and its successors could be present at a specific depth...</span> | |
1186 1173 <span class="k">push</span> <span class="i">@</span>{<span class="i">$VerticesWithSuccessorsAtDepth</span>[<span class="i">$Depth</span>]}<span class="cm">,</span> \<span class="i">@VertexWithSuccessors</span><span class="sc">;</span> | |
1187 1174 <span class="s">}</span> | |
1188 1175 <span class="k">return</span> <span class="i">@VerticesWithSuccessorsAtDepth</span><span class="sc">;</span> | |
1189 1176 <span class="s">}</span> | |
1190 1177 | |
1191 1178 <span class="c"># Search paths between two vertices...</span> | |
1192 1179 <span class="c">#</span> | |
1193 <a name="_PerformPathsSearchBetween-"></a>1180 <span class="k">sub </span><span class="m">_PerformPathsSearchBetween</span> <span class="s">{</span> | |
1194 1181 <span class="k">my</span><span class="s">(</span><span class="i">$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> | |
1195 1182 <span class="k">my</span><span class="s">(</span><span class="i">$DepthLimit</span><span class="s">)</span><span class="sc">;</span> | |
1196 1183 | |
1197 1184 <span class="c"># Perform a targeted DFS search...</span> | |
1198 1185 <span class="i">$DepthLimit</span> = <span class="k">undef</span><span class="sc">;</span> | |
1199 1186 <span class="i">$This</span><span class="i">->_PerformVertexSearch</span><span class="s">(</span><span class="q">"DFS"</span><span class="cm">,</span> <span class="i">$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> | |
1200 1187 | |
1201 1188 <span class="k">my</span><span class="s">(</span><span class="i">$Path</span><span class="s">)</span><span class="sc">;</span> | |
1202 1189 <span class="i">$Path</span> = <span class="i">$This</span><span class="i">->_CollectPathBetween</span><span class="s">(</span><span class="i">$RootVertexID</span><span class="cm">,</span> <span class="i">$TargetVertexID</span><span class="s">)</span><span class="sc">;</span> | |
1203 1190 | |
1204 1191 <span class="k">if</span> <span class="s">(</span><span class="k">defined</span> <span class="i">$Path</span><span class="s">)</span> <span class="s">{</span> | |
1205 1192 <span class="k">push</span> <span class="i">@</span>{<span class="i">$This</span>->{<span class="w">Paths</span>}}<span class="cm">,</span> <span class="i">$Path</span><span class="sc">;</span> | |
1206 1193 <span class="s">}</span> | |
1207 1194 <span class="k">return</span> <span class="i">$This</span><span class="sc">;</span> | |
1208 1195 <span class="s">}</span> | |
1209 1196 | |
1210 1197 <span class="c"># Collect path between root and target vertex after the search...</span> | |
1211 1198 <span class="c">#</span> | |
1212 <a name="_CollectPathBetween-"></a>1199 <span class="k">sub </span><span class="m">_CollectPathBetween</span> <span class="s">{</span> | |
1213 1200 <span class="k">my</span><span class="s">(</span><span class="i">$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> | |
1214 1201 | |
1215 1202 <span class="c"># Does a path from root to target vertex exist?</span> | |
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">$This</span>->{<span class="w">VerticesRoots</span>}{<span class="i">$TargetVertexID</span>}<span class="s">)</span> && <span class="s">(</span><span class="i">$This</span>->{<span class="w">VerticesRoots</span>}{<span class="i">$TargetVertexID</span>} == <span class="i">$RootVertexID</span><span class="s">)</span><span class="s">)</span><span class="s">)</span> <span class="s">{</span> | |
1217 1204 <span class="k">return</span> <span class="k">undef</span><span class="sc">;</span> | |
1218 1205 <span class="s">}</span> | |
1219 1206 | |
1220 1207 <span class="c"># Add target vertex ID path vertices...</span> | |
1221 1208 <span class="k">my</span><span class="s">(</span><span class="i">$VertexID</span><span class="cm">,</span> <span class="i">$Path</span><span class="cm">,</span> <span class="i">@VertexIDs</span><span class="s">)</span><span class="sc">;</span> | |
1222 1209 <span class="i">@VertexIDs</span> = <span class="s">(</span><span class="s">)</span><span class="sc">;</span> | |
1223 1210 <span class="i">$VertexID</span> = <span class="i">$TargetVertexID</span><span class="sc">;</span> | |
1224 1211 <span class="k">push</span> <span class="i">@VertexIDs</span><span class="cm">,</span> <span class="i">$VertexID</span><span class="sc">;</span> | |
1225 1212 | |
1226 1213 <span class="c"># Backtrack to root vertex ID...</span> | |
1227 1214 <span class="k">while</span> <span class="s">(</span><span class="i">$This</span>->{<span class="w">VerticesPredecessors</span>}{<span class="i">$VertexID</span>} != <span class="i">$VertexID</span><span class="s">)</span> <span class="s">{</span> | |
1228 1215 <span class="i">$VertexID</span> = <span class="i">$This</span>->{<span class="w">VerticesPredecessors</span>}{<span class="i">$VertexID</span>}<span class="sc">;</span> | |
1229 1216 <span class="k">push</span> <span class="i">@VertexIDs</span><span class="cm">,</span> <span class="i">$VertexID</span><span class="sc">;</span> | |
1230 1217 <span class="s">}</span> | |
1231 1218 | |
1232 1219 <span class="c"># Create path from target to root and reverse it...</span> | |
1233 1220 <span class="i">$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> | |
1234 1221 <span class="i">$Path</span><span class="i">->Reverse</span><span class="s">(</span><span class="s">)</span><span class="sc">;</span> | |
1235 1222 | |
1236 1223 <span class="k">return</span> <span class="i">$Path</span><span class="sc">;</span> | |
1237 1224 <span class="s">}</span> | |
1238 1225 | |
1239 1226 <span class="c"># Search vertices around specified root vertex with in specific neighborhood radius...</span> | |
1240 1227 <span class="c">#</span> | |
1241 <a name="PerformNeighborhoodVerticesSearchWithRadiusUpto-"></a>1228 <span class="k">sub </span><span class="m">PerformNeighborhoodVerticesSearchWithRadiusUpto</span> <span class="s">{</span> | |
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">$Radius</span><span class="s">)</span> = <span class="i">@_</span><span class="sc">;</span> | |
1243 1230 | |
1244 1231 <span class="c"># Make sure both start vertex and radius are defined...</span> | |
1245 1232 <span class="k">if</span> <span class="s">(</span>!<span class="k">defined</span> <span class="i">$StartVertexID</span><span class="s">)</span> <span class="s">{</span> | |
1246 1233 <span class="w">carp</span> <span class="q">"Warning: ${ClassName}->PerformNeighborhoodVerticesSearchWithRadiusUpto: No vertices search performed: Start vertex must be specified..."</span><span class="sc">;</span> | |
1247 1234 <span class="k">return</span> <span class="k">undef</span><span class="sc">;</span> | |
1248 1235 <span class="s">}</span> | |
1249 1236 <span class="k">if</span> <span class="s">(</span>!<span class="k">defined</span> <span class="i">$Radius</span><span class="s">)</span> <span class="s">{</span> | |
1250 1237 <span class="w">carp</span> <span class="q">"Warning: ${ClassName}->PerformNeighborhoodVerticesSearchWithRadiusUpto: No vertices search performed: Radius must be specified..."</span><span class="sc">;</span> | |
1251 1238 <span class="k">return</span> <span class="k">undef</span><span class="sc">;</span> | |
1252 1239 <span class="s">}</span> | |
1253 1240 | |
1254 1241 <span class="c"># Make sure both start vertex and length are valid...</span> | |
1255 1242 <span class="k">if</span> <span class="s">(</span>!<span class="i">$This</span>->{<span class="w">Graph</span>}<span class="i">->HasVertex</span><span class="s">(</span><span class="i">$StartVertexID</span><span class="s">)</span><span class="s">)</span> <span class="s">{</span> | |
1256 1243 <span class="w">carp</span> <span class="q">"Warning: ${ClassName}->PerformNeighborhoodVerticesSearchWithRadiusUpto: No vertices search performed: Vertex $StartVertexID doesn't exist..."</span><span class="sc">;</span> | |
1257 1244 <span class="k">return</span> <span class="k">undef</span><span class="sc">;</span> | |
1258 1245 <span class="s">}</span> | |
1259 1246 <span class="k">if</span> <span class="s">(</span><span class="i">$Radius</span> < <span class="n">0</span><span class="s">)</span> <span class="s">{</span> | |
1260 1247 <span class="w">carp</span> <span class="q">"Warning: ${ClassName}->PerformNeighborhoodVerticesSearchWithRadiusUpto: No vertices search performed: Specified radius, $Radius, must be a positive integer..."</span><span class="sc">;</span> | |
1261 1248 <span class="k">return</span> <span class="k">undef</span><span class="sc">;</span> | |
1262 1249 <span class="s">}</span> | |
1263 1250 | |
1264 1251 <span class="c"># Perform vertices search...</span> | |
1265 1252 <span class="k">return</span> <span class="i">$This</span><span class="i">->_PerformNeighborhoodVerticesSearch</span><span class="s">(</span><span class="q">"RadiusUpto"</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> | |
1266 1253 <span class="s">}</span> | |
1267 1254 | |
1268 1255 <span class="c"># Search vertices around specified root vertex...</span> | |
1269 1256 <span class="c">#</span> | |
1270 <a name="PerformNeighborhoodVerticesSearch-"></a>1257 <span class="k">sub </span><span class="m">PerformNeighborhoodVerticesSearch</span> <span class="s">{</span> | |
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> | |
1272 1259 | |
1273 1260 <span class="c"># Make sure start vertex is defined...</span> | |
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> | |
1275 1262 <span class="w">carp</span> <span class="q">"Warning: ${ClassName}->PerformNeighborhoodVerticesSearch: No vertices search performed: Start vertex must be specified..."</span><span class="sc">;</span> | |
1276 1263 <span class="k">return</span> <span class="k">undef</span><span class="sc">;</span> | |
1277 1264 <span class="s">}</span> | |
1278 1265 | |
1279 1266 <span class="c"># Make sure start vertex is valid...</span> | |
1280 1267 <span class="k">if</span> <span class="s">(</span>!<span class="i">$This</span>->{<span class="w">Graph</span>}<span class="i">->HasVertex</span><span class="s">(</span><span class="i">$StartVertexID</span><span class="s">)</span><span class="s">)</span> <span class="s">{</span> | |
1281 1268 <span class="w">carp</span> <span class="q">"Warning: ${ClassName}->PerformNeighborhoodVerticesSearch: No vertices search performed: Vertex $StartVertexID doesn't exist..."</span><span class="sc">;</span> | |
1282 1269 <span class="k">return</span> <span class="k">undef</span><span class="sc">;</span> | |
1283 1270 <span class="s">}</span> | |
1284 1271 <span class="c"># Perform vertices search...</span> | |
1285 1272 <span class="k">return</span> <span class="i">$This</span><span class="i">->_PerformNeighborhoodVerticesSearch</span><span class="s">(</span><span class="q">"AllRadii"</span><span class="cm">,</span> <span class="i">$StartVertexID</span><span class="s">)</span><span class="sc">;</span> | |
1286 1273 <span class="s">}</span> | |
1287 1274 | |
1288 1275 <span class="c"># Search vertices around specified root vertex with in specific neighborhood radius along with</span> | |
1289 1276 <span class="c"># identification of successors of each vertex found during the search...</span> | |
1290 1277 <span class="c">#</span> | |
1291 <a name="PerformNeighborhoodVerticesSearchWithSuccessorsAndRadiusUpto-"></a>1278 <span class="k">sub </span><span class="m">PerformNeighborhoodVerticesSearchWithSuccessorsAndRadiusUpto</span> <span class="s">{</span> | |
1292 1279 <span class="k">my</span><span class="s">(</span><span class="i">$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> | |
1293 1280 | |
1294 1281 <span class="c"># Make sure both start vertex and radius are defined...</span> | |
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> | |
1296 1283 <span class="w">carp</span> <span class="q">"Warning: ${ClassName}->PerformNeighborhoodVerticesSearchWithSuccessorsAndRadiusUpto: No vertices search performed: Start vertex must be specified..."</span><span class="sc">;</span> | |
1297 1284 <span class="k">return</span> <span class="k">undef</span><span class="sc">;</span> | |
1298 1285 <span class="s">}</span> | |
1299 1286 <span class="k">if</span> <span class="s">(</span>!<span class="k">defined</span> <span class="i">$Radius</span><span class="s">)</span> <span class="s">{</span> | |
1300 1287 <span class="w">carp</span> <span class="q">"Warning: ${ClassName}->PerformNeighborhoodVerticesSearchWithSuccessorsAndRadiusUpto: No vertices search performed: Radius must be specified..."</span><span class="sc">;</span> | |
1301 1288 <span class="k">return</span> <span class="k">undef</span><span class="sc">;</span> | |
1302 1289 <span class="s">}</span> | |
1303 1290 | |
1304 1291 <span class="c"># Make sure both start vertex and length are valid...</span> | |
1305 1292 <span class="k">if</span> <span class="s">(</span>!<span class="i">$This</span>->{<span class="w">Graph</span>}<span class="i">->HasVertex</span><span class="s">(</span><span class="i">$StartVertexID</span><span class="s">)</span><span class="s">)</span> <span class="s">{</span> | |
1306 1293 <span class="w">carp</span> <span class="q">"Warning: ${ClassName}->PerformNeighborhoodVerticesSearchWithSuccessorsAndRadiusUpto: No vertices search performed: Vertex $StartVertexID doesn't exist..."</span><span class="sc">;</span> | |
1307 1294 <span class="k">return</span> <span class="k">undef</span><span class="sc">;</span> | |
1308 1295 <span class="s">}</span> | |
1309 1296 <span class="k">if</span> <span class="s">(</span><span class="i">$Radius</span> < <span class="n">0</span><span class="s">)</span> <span class="s">{</span> | |
1310 1297 <span class="w">carp</span> <span class="q">"Warning: ${ClassName}->PerformNeighborhoodVerticesSearchWithSuccessorsAndRadiusUpto: No vertices search performed: Specified radius, $Radius, must be a positive integer..."</span><span class="sc">;</span> | |
1311 1298 <span class="k">return</span> <span class="k">undef</span><span class="sc">;</span> | |
1312 1299 <span class="s">}</span> | |
1313 1300 | |
1314 1301 <span class="c"># Perform vertices search...</span> | |
1315 1302 <span class="k">return</span> <span class="i">$This</span><span class="i">->_PerformNeighborhoodVerticesSearch</span><span class="s">(</span><span class="q">"WithSuccessorsAndRadiusUpto"</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> | |
1316 1303 <span class="s">}</span> | |
1317 1304 | |
1318 1305 <span class="c"># Search vertices around specified root vertex along with identification of</span> | |
1319 1306 <span class="c"># successors of each vertex found during the search...</span> | |
1320 1307 <span class="c">#</span> | |
1321 <a name="PerformNeighborhoodVerticesSearchWithSuccessors-"></a>1308 <span class="k">sub </span><span class="m">PerformNeighborhoodVerticesSearchWithSuccessors</span> <span class="s">{</span> | |
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> | |
1323 1310 | |
1324 1311 <span class="c"># Make sure start vertex is defined...</span> | |
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> | |
1326 1313 <span class="w">carp</span> <span class="q">"Warning: ${ClassName}->PerformNeighborhoodVerticesSearchWithSuccessors: No vertices search performed: Start vertex must be specified..."</span><span class="sc">;</span> | |
1327 1314 <span class="k">return</span> <span class="k">undef</span><span class="sc">;</span> | |
1328 1315 <span class="s">}</span> | |
1329 1316 | |
1330 1317 <span class="c"># Make sure start vertex is valid...</span> | |
1331 1318 <span class="k">if</span> <span class="s">(</span>!<span class="i">$This</span>->{<span class="w">Graph</span>}<span class="i">->HasVertex</span><span class="s">(</span><span class="i">$StartVertexID</span><span class="s">)</span><span class="s">)</span> <span class="s">{</span> | |
1332 1319 <span class="w">carp</span> <span class="q">"Warning: ${ClassName}->PerformNeighborhoodVerticesSearchWithSuccessors: No vertices search performed: Vertex $StartVertexID doesn't exist..."</span><span class="sc">;</span> | |
1333 1320 <span class="k">return</span> <span class="k">undef</span><span class="sc">;</span> | |
1334 1321 <span class="s">}</span> | |
1335 1322 <span class="c"># Perform vertices search...</span> | |
1336 1323 <span class="k">return</span> <span class="i">$This</span><span class="i">->_PerformNeighborhoodVerticesSearch</span><span class="s">(</span><span class="q">"WithSuccessorsAndAllRadii"</span><span class="cm">,</span> <span class="i">$StartVertexID</span><span class="s">)</span><span class="sc">;</span> | |
1337 1324 <span class="s">}</span> | |
1338 1325 | |
1339 1326 <span class="c"># Search vertices at successive neighborhood radii levels...</span> | |
1340 1327 <span class="c">#</span> | |
1341 <a name="_PerformNeighborhoodVerticesSearch-"></a>1328 <span class="k">sub </span><span class="m">_PerformNeighborhoodVerticesSearch</span> <span class="s">{</span> | |
1342 1329 <span class="k">my</span><span class="s">(</span><span class="i">$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">$Radius</span><span class="s">)</span> = <span class="i">@_</span><span class="sc">;</span> | |
1343 1330 <span class="k">my</span><span class="s">(</span><span class="i">$DepthLimit</span><span class="cm">,</span> <span class="i">$AllowCycles</span><span class="s">)</span><span class="sc">;</span> | |
1344 1331 | |
1345 1332 <span class="i">$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> | |
1346 1333 <span class="i">$AllowCycles</span> = <span class="k">undef</span><span class="sc">;</span> | |
1347 1334 | |
1348 1335 <span class="c"># Perform BFS search...</span> | |
1349 1336 <span class="k">if</span> <span class="s">(</span><span class="i">$Mode</span> =~ <span class="q">/^RadiusUpto$/i</span><span class="s">)</span> <span class="s">{</span> | |
1350 1337 <span class="i">$This</span><span class="i">->_PerformVertexNeighborhoodSearch</span><span class="s">(</span><span class="q">"BFSWithLimit"</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> | |
1351 1338 <span class="s">}</span> | |
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> | |
1353 1340 <span class="i">$This</span><span class="i">->_PerformVertexNeighborhoodSearch</span><span class="s">(</span><span class="q">"BFS"</span><span class="cm">,</span> <span class="i">$RootVertexID</span><span class="s">)</span><span class="sc">;</span> | |
1354 1341 <span class="s">}</span> | |
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> | |
1356 1343 <span class="i">$AllowCycles</span> = <span class="n">1</span><span class="sc">;</span> | |
1357 1344 <span class="i">$This</span><span class="i">->_PerformVertexNeighborhoodSearch</span><span class="s">(</span><span class="q">"BFSWithLimit"</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">$AllowCycles</span><span class="s">)</span><span class="sc">;</span> | |
1358 1345 <span class="s">}</span> | |
1359 1346 <span class="k">elsif</span> <span class="s">(</span><span class="i">$Mode</span> =~ <span class="q">/^WithSuccessorsAndAllRadii$/i</span><span class="s">)</span> <span class="s">{</span> | |
1360 1347 <span class="i">$AllowCycles</span> = <span class="n">1</span><span class="sc">;</span> | |
1361 1348 <span class="i">$This</span><span class="i">->_PerformVertexNeighborhoodSearch</span><span class="s">(</span><span class="q">"BFSWithLimit"</span><span class="cm">,</span> <span class="i">$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> | |
1362 1349 <span class="s">}</span> | |
1363 1350 | |
1364 1351 <span class="c"># Make sure traversal did get the root vertex...</span> | |
1365 1352 <span class="k">if</span> <span class="s">(</span>!<span class="k">exists</span> <span class="i">$This</span>->{<span class="w">VerticesDepth</span>}{<span class="i">$RootVertexID</span>}<span class="s">)</span> <span class="s">{</span> | |
1366 1353 <span class="k">return</span> <span class="i">$This</span><span class="sc">;</span> | |
1367 1354 <span class="s">}</span> | |
1368 1355 | |
1369 1356 <span class="k">if</span> <span class="s">(</span><span class="i">$Mode</span> =~ <span class="q">/^(RadiusUpto|AllRadii)$/i</span><span class="s">)</span> <span class="s">{</span> | |
1370 1357 <span class="k">push</span> <span class="i">@</span>{<span class="i">$This</span>->{<span class="w">VerticesNeighborhoods</span>}}<span class="cm">,</span> <span class="i">$This</span><span class="i">->_CollectVerticesAtSpecificDepths</span><span class="s">(</span><span class="s">)</span><span class="sc">;</span> | |
1371 1358 <span class="s">}</span> | |
1372 1359 <span class="k">elsif</span> <span class="s">(</span><span class="i">$Mode</span> =~ <span class="q">/^(WithSuccessorsAndRadiusUpto|WithSuccessorsAndAllRadii)$/i</span><span class="s">)</span> <span class="s">{</span> | |
1373 1360 <span class="k">push</span> <span class="i">@</span>{<span class="i">$This</span>->{<span class="w">VerticesNeighborhoodsWithSuccessors</span>}}<span class="cm">,</span> <span class="i">$This</span><span class="i">->_CollectVerticesWithSuccessorsAtSpecificDepths</span><span class="s">(</span><span class="s">)</span><span class="sc">;</span> | |
1374 1361 <span class="s">}</span> | |
1375 1362 | |
1376 1363 <span class="k">return</span> <span class="i">$This</span><span class="sc">;</span> | |
1377 1364 <span class="s">}</span> | |
1378 1365 | |
1379 1366 <span class="c"># Perform appropriate vertex search...</span> | |
1380 1367 <span class="c">#</span> | |
1381 <a name="_PerformVertexNeighborhoodSearch-"></a>1368 <span class="k">sub </span><span class="m">_PerformVertexNeighborhoodSearch</span> <span class="s">{</span> | |
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">$AllowCycles</span><span class="s">)</span> = <span class="i">@_</span><span class="sc">;</span> | |
1383 1370 | |
1384 1371 <span class="c"># Setup search...</span> | |
1385 1372 <span class="i">$This</span>->{<span class="w">TraversalMode</span>} = <span class="q">'VertexNeighborhood'</span><span class="sc">;</span> | |
1386 1373 <span class="i">$This</span>->{<span class="w">TraversalType</span>} = <span class="i">$SearchType</span><span class="sc">;</span> | |
1387 1374 | |
1388 1375 <span class="k">if</span> <span class="s">(</span><span class="k">defined</span> <span class="i">$RootVertexID</span><span class="s">)</span> <span class="s">{</span> | |
1389 1376 <span class="i">$This</span>->{<span class="w">RootVertex</span>} = <span class="i">$RootVertexID</span><span class="sc">;</span> | |
1390 1377 <span class="s">}</span> | |
1391 1378 <span class="k">if</span> <span class="s">(</span><span class="k">defined</span> <span class="i">$DepthLimit</span><span class="s">)</span> <span class="s">{</span> | |
1392 1379 <span class="i">$This</span>->{<span class="w">DepthLimit</span>} = <span class="i">$DepthLimit</span><span class="sc">;</span> | |
1393 1380 <span class="s">}</span> | |
1394 1381 <span class="k">if</span> <span class="s">(</span><span class="k">defined</span> <span class="i">$AllowCycles</span><span class="s">)</span> <span class="s">{</span> | |
1395 1382 <span class="i">$This</span>->{<span class="w">AllowVertexCycles</span>} = <span class="i">$AllowCycles</span><span class="sc">;</span> | |
1396 1383 <span class="s">}</span> | |
1397 1384 | |
1398 1385 <span class="c"># Perform search...</span> | |
1399 1386 <span class="k">return</span> <span class="i">$This</span><span class="i">->_TraverseGraph</span><span class="s">(</span><span class="s">)</span><span class="sc">;</span> | |
1400 1387 <span class="s">}</span> | |
1401 1388 | |
1402 1389 <span class="c"># Get orderded list of vertices after DFS/BFS search...</span> | |
1403 1390 <span class="c">#</span> | |
1404 <a name="GetVertices-"></a>1391 <span class="k">sub </span><span class="m">GetVertices</span> <span class="s">{</span> | |
1405 1392 <span class="k">my</span><span class="s">(</span><span class="i">$This</span><span class="s">)</span> = <span class="i">@_</span><span class="sc">;</span> | |
1406 1393 | |
1407 1394 <span class="k">return</span> <span class="k">wantarray</span> ? <span class="i">@</span>{<span class="i">$This</span>->{<span class="w">Vertices</span>}} <span class="co">:</span> <span class="k">scalar</span> <span class="i">@</span>{<span class="i">$This</span>->{<span class="w">Vertices</span>}}<span class="sc">;</span> | |
1408 1395 <span class="s">}</span> | |
1409 1396 | |
1410 1397 <span class="c"># Get a hash list containing vertex and root vertex as key/value pair for all vertices</span> | |
1411 1398 <span class="c"># ordered using DFS/BFS search available via GetVertices method...</span> | |
1412 1399 <span class="c">#</span> | |
1413 <a name="GetVerticesRoots-"></a>1400 <span class="k">sub </span><span class="m">GetVerticesRoots</span> <span class="s">{</span> | |
1414 1401 <span class="k">my</span><span class="s">(</span><span class="i">$This</span><span class="s">)</span> = <span class="i">@_</span><span class="sc">;</span> | |
1415 1402 | |
1416 1403 <span class="k">return</span> <span class="i">%</span>{<span class="i">$This</span>->{<span class="w">VerticesRoots</span>}}<span class="sc">;</span> | |
1417 1404 <span class="s">}</span> | |
1418 1405 | |
1419 1406 <span class="c"># Get a list containing lists of vertices in connected components of graph after DFS/BFS</span> | |
1420 1407 <span class="c"># search...</span> | |
1421 1408 <span class="c">#</span> | |
1422 1409 <span class="c"># Note:</span> | |
1423 1410 <span class="c"># . List is sorted in descending order of number of vertices in each connected component.</span> | |
1424 1411 <span class="c">#</span> | |
1425 <a name="GetConnectedComponentsVertices-"></a>1412 <span class="k">sub </span><span class="m">GetConnectedComponentsVertices</span> <span class="s">{</span> | |
1426 1413 <span class="k">my</span><span class="s">(</span><span class="i">$This</span><span class="s">)</span> = <span class="i">@_</span><span class="sc">;</span> | |
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> | |
1428 1415 | |
1429 1416 <span class="i">@ConnectedVertices</span> = <span class="s">(</span><span class="s">)</span><span class="sc">;</span> | |
1430 1417 <span class="i">%VerticesAtRoot</span> = <span class="s">(</span><span class="s">)</span><span class="sc">;</span> | |
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>->{<span class="w">Vertices</span>}}<span class="s">)</span> <span class="s">{</span> | |
1432 1419 <span class="i">$VertexRoot</span> = <span class="i">$This</span>->{<span class="w">VerticesRoots</span>}{<span class="i">$VertexID</span>}<span class="sc">;</span> | |
1433 1420 <span class="k">if</span> <span class="s">(</span>!<span class="k">exists</span> <span class="i">$VerticesAtRoot</span>{<span class="i">$VertexRoot</span>}<span class="s">)</span> <span class="s">{</span> | |
1434 1421 <span class="i">@</span>{<span class="i">$VerticesAtRoot</span>{<span class="i">$VertexRoot</span>}} = <span class="s">(</span><span class="s">)</span><span class="sc">;</span> | |
1435 1422 <span class="s">}</span> | |
1436 1423 <span class="k">push</span> <span class="i">@</span>{<span class="i">$VerticesAtRoot</span>{<span class="i">$VertexRoot</span>}}<span class="cm">,</span> <span class="i">$VertexID</span><span class="sc">;</span> | |
1437 1424 <span class="s">}</span> | |
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">$b</span>} <=> <span class="i">@</span>{<span class="i">$a</span>} <span class="s">}</span> <span class="k">values</span> <span class="i">%VerticesAtRoot</span><span class="sc">;</span> | |
1439 1426 | |
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> | |
1441 1428 <span class="s">}</span> | |
1442 1429 | |
1443 1430 <span class="c"># Get predecessor vertices...</span> | |
1444 1431 <span class="c">#</span> | |
1445 <a name="GetVerticesPredecessors-"></a>1432 <span class="k">sub </span><span class="m">GetVerticesPredecessors</span> <span class="s">{</span> | |
1446 1433 <span class="k">my</span><span class="s">(</span><span class="i">$This</span><span class="s">)</span> = <span class="i">@_</span><span class="sc">;</span> | |
1447 1434 | |
1448 1435 <span class="k">return</span> <span class="i">%</span>{<span class="i">$This</span>->{<span class="w">VerticesPredecessors</span>}}<span class="sc">;</span> | |
1449 1436 <span class="s">}</span> | |
1450 1437 | |
1451 1438 <span class="c"># Get a hash list containing vertex and depth from root vertex as key/value pair for all vertices</span> | |
1452 1439 <span class="c"># ordered using DFS/BFS search available via GetVertices method...</span> | |
1453 1440 <span class="c">#</span> | |
1454 <a name="GetVerticesDepth-"></a>1441 <span class="k">sub </span><span class="m">GetVerticesDepth</span> <span class="s">{</span> | |
1455 1442 <span class="k">my</span><span class="s">(</span><span class="i">$This</span><span class="s">)</span> = <span class="i">@_</span><span class="sc">;</span> | |
1456 1443 | |
1457 1444 <span class="k">return</span> <span class="i">%</span>{<span class="i">$This</span>->{<span class="w">VerticesDepth</span>}}<span class="sc">;</span> | |
1458 1445 <span class="s">}</span> | |
1459 1446 | |
1460 1447 <span class="c"># Get paths found during paths search...</span> | |
1461 1448 <span class="c">#</span> | |
1462 <a name="GetPaths-"></a>1449 <span class="k">sub </span><span class="m">GetPaths</span> <span class="s">{</span> | |
1463 1450 <span class="k">my</span><span class="s">(</span><span class="i">$This</span><span class="s">)</span> = <span class="i">@_</span><span class="sc">;</span> | |
1464 1451 | |
1465 1452 <span class="k">return</span> <span class="k">wantarray</span> ? <span class="i">@</span>{<span class="i">$This</span>->{<span class="w">Paths</span>}} <span class="co">:</span> <span class="k">scalar</span> <span class="i">@</span>{<span class="i">$This</span>->{<span class="w">Paths</span>}}<span class="sc">;</span> | |
1466 1453 <span class="s">}</span> | |
1467 1454 | |
1468 1455 <span class="c"># Get vertices collected at various neighborhood radii...</span> | |
1469 1456 <span class="c">#</span> | |
1470 <a name="GetVerticesNeighborhoods-"></a>1457 <span class="k">sub </span><span class="m">GetVerticesNeighborhoods</span> <span class="s">{</span> | |
1471 1458 <span class="k">my</span><span class="s">(</span><span class="i">$This</span><span class="s">)</span> = <span class="i">@_</span><span class="sc">;</span> | |
1472 1459 | |
1473 1460 <span class="k">return</span> <span class="k">wantarray</span> ? <span class="i">@</span>{<span class="i">$This</span>->{<span class="w">VerticesNeighborhoods</span>}} <span class="co">:</span> <span class="k">scalar</span> <span class="i">@</span>{<span class="i">$This</span>->{<span class="w">VerticesNeighborhoods</span>}}<span class="sc">;</span> | |
1474 1461 <span class="s">}</span> | |
1475 1462 | |
1476 1463 <span class="c"># Get vertices, along with their successor vertices, collected at various neighborhood radii as</span> | |
1477 1464 <span class="c"># a list containing references to lists with first value corresponding to vertex ID and second value</span> | |
1478 1465 <span class="c"># a reference to a list containing its successors.</span> | |
1479 1466 <span class="c">#</span> | |
1480 <a name="GetVerticesNeighborhoodsWithSuccessors-"></a>1467 <span class="k">sub </span><span class="m">GetVerticesNeighborhoodsWithSuccessors</span> <span class="s">{</span> | |
1481 1468 <span class="k">my</span><span class="s">(</span><span class="i">$This</span><span class="s">)</span> = <span class="i">@_</span><span class="sc">;</span> | |
1482 1469 | |
1483 1470 <span class="k">return</span> <span class="k">wantarray</span> ? <span class="i">@</span>{<span class="i">$This</span>->{<span class="w">VerticesNeighborhoodsWithSuccessors</span>}} <span class="co">:</span> <span class="k">scalar</span> <span class="i">@</span>{<span class="i">$This</span>->{<span class="w">VerticesNeighborhoodsWithSuccessors</span>}}<span class="sc">;</span> | |
1484 1471 <span class="s">}</span> | |
1485 1472 | |
1486 1473 <span class="c"># Return a string containg data for PathsTraversal object...</span> | |
1487 <a name="StringifyPathsTraversal-"></a>1474 <span class="k">sub </span><span class="m">StringifyPathsTraversal</span> <span class="s">{</span> | |
1488 1475 <span class="k">my</span><span class="s">(</span><span class="i">$This</span><span class="s">)</span> = <span class="i">@_</span><span class="sc">;</span> | |
1489 1476 <span class="k">my</span><span class="s">(</span><span class="i">$PathsTraversalString</span><span class="s">)</span><span class="sc">;</span> | |
1490 1477 | |
1491 1478 <span class="i">$PathsTraversalString</span> = <span class="q">"PathsTraversalMode: "</span> . <span class="i">$This</span>->{<span class="w">TraversalMode</span>}<span class="sc">;</span> | |
1492 1479 <span class="i">$PathsTraversalString</span> .= <span class="q">"; PathsTraversalType: "</span> . <span class="i">$This</span>->{<span class="w">TraversalType</span>}<span class="sc">;</span> | |
1493 1480 | |
1494 1481 <span class="c"># Vertices ordered by traversal...</span> | |
1495 1482 <span class="i">$PathsTraversalString</span> .= <span class="q">"; Vertices: "</span> . <span class="k">join</span><span class="s">(</span><span class="q">' '</span><span class="cm">,</span> <span class="i">@</span>{<span class="i">$This</span>->{<span class="w">Vertices</span>}}<span class="s">)</span><span class="sc">;</span> | |
1496 1483 | |
1497 1484 <span class="c"># Stringify depths of vertices...</span> | |
1498 1485 <span class="i">$PathsTraversalString</span> .= <span class="q">"; "</span> . <span class="i">$This</span><span class="i">->StringifyVerticesDepth</span><span class="s">(</span><span class="s">)</span><span class="sc">;</span> | |
1499 1486 | |
1500 1487 <span class="c"># Stringify roots of vertices...</span> | |
1501 1488 <span class="i">$PathsTraversalString</span> .= <span class="q">"; "</span> . <span class="i">$This</span><span class="i">->StringifyVerticesRoots</span><span class="s">(</span><span class="s">)</span><span class="sc">;</span> | |
1502 1489 | |
1503 1490 <span class="c"># Stringify predecessor of vertices...</span> | |
1504 1491 <span class="i">$PathsTraversalString</span> .= <span class="q">"; "</span> . <span class="i">$This</span><span class="i">->StringifyVerticesPredecessors</span><span class="s">(</span><span class="s">)</span><span class="sc">;</span> | |
1505 1492 | |
1506 1493 <span class="c"># Stringify successor vertices...</span> | |
1507 1494 <span class="i">$PathsTraversalString</span> .= <span class="q">"; "</span> . <span class="i">$This</span><span class="i">->StringifyVerticesSuccessors</span><span class="s">(</span><span class="s">)</span><span class="sc">;</span> | |
1508 1495 | |
1509 1496 <span class="c"># Stringify paths...</span> | |
1510 1497 <span class="i">$PathsTraversalString</span> .= <span class="q">"; "</span> . <span class="i">$This</span><span class="i">->StringifyPaths</span><span class="s">(</span><span class="s">)</span><span class="sc">;</span> | |
1511 1498 | |
1512 1499 <span class="c"># Stringify vertices neighborhoods...</span> | |
1513 1500 <span class="i">$PathsTraversalString</span> .= <span class="q">"; "</span> . <span class="i">$This</span><span class="i">->StringifyVerticesNeighborhoods</span><span class="s">(</span><span class="s">)</span><span class="sc">;</span> | |
1514 1501 | |
1515 1502 <span class="c"># Stringify vertices neighborhoods with successors...</span> | |
1516 1503 <span class="i">$PathsTraversalString</span> .= <span class="q">"; "</span> . <span class="i">$This</span><span class="i">->StringifyVerticesNeighborhoodsWithSuccessors</span><span class="s">(</span><span class="s">)</span><span class="sc">;</span> | |
1517 1504 | |
1518 1505 <span class="k">return</span> <span class="i">$PathsTraversalString</span><span class="sc">;</span> | |
1519 1506 <span class="s">}</span> | |
1520 1507 | |
1521 1508 <span class="c"># Stringify vertices depth...</span> | |
1522 1509 <span class="c">#</span> | |
1523 <a name="StringifyVerticesDepth-"></a>1510 <span class="k">sub </span><span class="m">StringifyVerticesDepth</span> <span class="s">{</span> | |
1524 1511 <span class="k">my</span><span class="s">(</span><span class="i">$This</span><span class="s">)</span> = <span class="i">@_</span><span class="sc">;</span> | |
1525 1512 <span class="k">my</span><span class="s">(</span><span class="i">$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> | |
1526 1513 | |
1527 1514 <span class="k">if</span> <span class="s">(</span>!<span class="i">@</span>{<span class="i">$This</span>->{<span class="w">Vertices</span>}}<span class="s">)</span> <span class="s">{</span> | |
1528 1515 <span class="i">$DepthString</span> = <span class="q">"<Vertex-Depth>: None"</span><span class="sc">;</span> | |
1529 1516 <span class="k">return</span> <span class="i">$DepthString</span><span class="sc">;</span> | |
1530 1517 <span class="s">}</span> | |
1531 1518 | |
1532 1519 <span class="i">$DepthString</span> = <span class="q">"<Vertex-Depth>: "</span><span class="sc">;</span> | |
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>->{<span class="w">Vertices</span>}}<span class="s">)</span> <span class="s">{</span> | |
1534 1521 <span class="i">$VertexDepth</span> = <span class="i">$This</span>->{<span class="w">VerticesDepth</span>}{<span class="i">$VertexID</span>}<span class="sc">;</span> | |
1535 1522 <span class="i">$DepthString</span> .= <span class="q">" <$VertexID-$VertexDepth>"</span><span class="sc">;</span> | |
1536 1523 <span class="s">}</span> | |
1537 1524 <span class="k">return</span> <span class="i">$DepthString</span><span class="sc">;</span> | |
1538 1525 <span class="s">}</span> | |
1539 1526 | |
1540 1527 <span class="c"># Stringify roots of vertices...</span> | |
1541 1528 <span class="c">#</span> | |
1542 <a name="StringifyVerticesRoots-"></a>1529 <span class="k">sub </span><span class="m">StringifyVerticesRoots</span> <span class="s">{</span> | |
1543 1530 <span class="k">my</span><span class="s">(</span><span class="i">$This</span><span class="s">)</span> = <span class="i">@_</span><span class="sc">;</span> | |
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">$RootsString</span><span class="s">)</span><span class="sc">;</span> | |
1545 1532 | |
1546 1533 <span class="k">if</span> <span class="s">(</span>!<span class="i">@</span>{<span class="i">$This</span>->{<span class="w">Vertices</span>}}<span class="s">)</span> <span class="s">{</span> | |
1547 1534 <span class="i">$RootsString</span> = <span class="q">"<Vertex-RootVertex>: None"</span><span class="sc">;</span> | |
1548 1535 <span class="k">return</span> <span class="i">$RootsString</span><span class="sc">;</span> | |
1549 1536 <span class="s">}</span> | |
1550 1537 | |
1551 1538 <span class="i">$RootsString</span> = <span class="q">"<Vertex-RootVertex>: "</span><span class="sc">;</span> | |
1552 1539 <span class="k">for</span> <span class="i">$VertexID</span> <span class="s">(</span><span class="i">@</span>{<span class="i">$This</span>->{<span class="w">Vertices</span>}}<span class="s">)</span> <span class="s">{</span> | |
1553 1540 <span class="i">$RootVertexID</span> = <span class="i">$This</span>->{<span class="w">VerticesRoots</span>}{<span class="i">$VertexID</span>}<span class="sc">;</span> | |
1554 1541 <span class="i">$RootsString</span> .= <span class="q">" <$VertexID-$RootVertexID>"</span><span class="sc">;</span> | |
1555 1542 <span class="s">}</span> | |
1556 1543 <span class="k">return</span> <span class="i">$RootsString</span><span class="sc">;</span> | |
1557 1544 <span class="s">}</span> | |
1558 1545 | |
1559 1546 <span class="c"># Stringify predecessor of vertices...</span> | |
1560 1547 <span class="c">#</span> | |
1561 <a name="StringifyVerticesPredecessors-"></a>1548 <span class="k">sub </span><span class="m">StringifyVerticesPredecessors</span> <span class="s">{</span> | |
1562 1549 <span class="k">my</span><span class="s">(</span><span class="i">$This</span><span class="s">)</span> = <span class="i">@_</span><span class="sc">;</span> | |
1563 1550 <span class="k">my</span><span class="s">(</span><span class="i">$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> | |
1564 1551 | |
1565 1552 <span class="k">if</span> <span class="s">(</span>!<span class="i">@</span>{<span class="i">$This</span>->{<span class="w">Vertices</span>}}<span class="s">)</span> <span class="s">{</span> | |
1566 1553 <span class="i">$PredecessorString</span> = <span class="q">"<Vertex-PredecessorVertex>: None"</span><span class="sc">;</span> | |
1567 1554 <span class="k">return</span> <span class="i">$PredecessorString</span><span class="sc">;</span> | |
1568 1555 <span class="s">}</span> | |
1569 1556 | |
1570 1557 <span class="i">$PredecessorString</span> = <span class="q">"<Vertex-PredecessorVertex>: "</span><span class="sc">;</span> | |
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>->{<span class="w">Vertices</span>}}<span class="s">)</span> <span class="s">{</span> | |
1572 1559 <span class="i">$PredecessorVertexID</span> = <span class="i">$This</span>->{<span class="w">VerticesPredecessors</span>}{<span class="i">$VertexID</span>}<span class="sc">;</span> | |
1573 1560 <span class="i">$PredecessorString</span> .= <span class="q">" <$VertexID-$PredecessorVertexID>"</span><span class="sc">;</span> | |
1574 1561 <span class="s">}</span> | |
1575 1562 <span class="k">return</span> <span class="i">$PredecessorString</span><span class="sc">;</span> | |
1576 1563 <span class="s">}</span> | |
1577 1564 | |
1578 1565 <span class="c"># Stringify successor vertices...</span> | |
1579 1566 <span class="c">#</span> | |
1580 <a name="StringifyVerticesSuccessors-"></a>1567 <span class="k">sub </span><span class="m">StringifyVerticesSuccessors</span> <span class="s">{</span> | |
1581 1568 <span class="k">my</span><span class="s">(</span><span class="i">$This</span><span class="s">)</span> = <span class="i">@_</span><span class="sc">;</span> | |
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">$VerticesSuccessorsString</span><span class="s">)</span><span class="sc">;</span> | |
1583 1570 | |
1584 1571 <span class="k">if</span> <span class="s">(</span>!<span class="i">@</span>{<span class="i">$This</span>->{<span class="w">Vertices</span>}}<span class="s">)</span> <span class="s">{</span> | |
1585 1572 <span class="i">$SuccessorString</span> = <span class="q">"<Vertex-VerticesSuccessorsList>: None"</span><span class="sc">;</span> | |
1586 1573 <span class="k">return</span> <span class="i">$SuccessorString</span><span class="sc">;</span> | |
1587 1574 <span class="s">}</span> | |
1588 1575 | |
1589 1576 <span class="i">$SuccessorString</span> = <span class="q">"<Vertex-VerticesSuccessorsList>: "</span><span class="sc">;</span> | |
1590 1577 <span class="k">for</span> <span class="i">$VertexID</span> <span class="s">(</span><span class="i">@</span>{<span class="i">$This</span>->{<span class="w">Vertices</span>}}<span class="s">)</span> <span class="s">{</span> | |
1591 1578 <span class="k">if</span> <span class="s">(</span><span class="k">exists</span><span class="s">(</span><span class="i">$This</span>->{<span class="w">VerticesSuccessors</span>}{<span class="i">$VertexID</span>}<span class="s">)</span> && <span class="i">@</span>{<span class="i">$This</span>->{<span class="w">VerticesSuccessors</span>}{<span class="i">$VertexID</span>}}<span class="s">)</span> <span class="s">{</span> | |
1592 1579 <span class="i">$VerticesSuccessorsString</span> = <span class="k">join</span><span class="s">(</span><span class="q">','</span><span class="cm">,</span> <span class="i">@</span>{<span class="i">$This</span>->{<span class="w">VerticesSuccessors</span>}{<span class="i">$VertexID</span>}}<span class="s">)</span><span class="sc">;</span> | |
1593 1580 <span class="s">}</span> | |
1594 1581 <span class="k">else</span> <span class="s">{</span> | |
1595 1582 <span class="i">$VerticesSuccessorsString</span> = <span class="q">"None"</span><span class="sc">;</span> | |
1596 1583 <span class="s">}</span> | |
1597 1584 <span class="i">$SuccessorString</span> .= <span class="q">" <$VertexID-$VerticesSuccessorsString>"</span><span class="sc">;</span> | |
1598 1585 <span class="s">}</span> | |
1599 1586 <span class="k">return</span> <span class="i">$SuccessorString</span><span class="sc">;</span> | |
1600 1587 <span class="s">}</span> | |
1601 1588 | |
1602 1589 <span class="c"># Strinigify paths...</span> | |
1603 1590 <span class="c">#</span> | |
1604 <a name="StringifyPaths-"></a>1591 <span class="k">sub </span><span class="m">StringifyPaths</span> <span class="s">{</span> | |
1605 1592 <span class="k">my</span><span class="s">(</span><span class="i">$This</span><span class="s">)</span> = <span class="i">@_</span><span class="sc">;</span> | |
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> | |
1607 1594 | |
1608 1595 <span class="k">if</span> <span class="s">(</span>!<span class="i">@</span>{<span class="i">$This</span>->{<span class="w">Paths</span>}}<span class="s">)</span> <span class="s">{</span> | |
1609 1596 <span class="i">$PathsString</span> = <span class="q">"Paths: None"</span><span class="sc">;</span> | |
1610 1597 <span class="k">return</span> <span class="i">$PathsString</span><span class="sc">;</span> | |
1611 1598 <span class="s">}</span> | |
1612 1599 | |
1613 1600 <span class="k">my</span><span class="s">(</span><span class="i">$FirstPath</span><span class="s">)</span><span class="sc">;</span> | |
1614 1601 <span class="i">$PathsString</span> = <span class="q">"Paths: "</span><span class="sc">;</span> | |
1615 1602 <span class="i">$FirstPath</span> = <span class="n">1</span><span class="sc">;</span> | |
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>->{<span class="w">Paths</span>}}<span class="s">)</span> <span class="s">{</span> | |
1617 1604 <span class="k">if</span> <span class="s">(</span><span class="i">$FirstPath</span><span class="s">)</span> <span class="s">{</span> | |
1618 1605 <span class="i">$FirstPath</span> = <span class="n">0</span><span class="sc">;</span> | |
1619 1606 <span class="s">}</span> | |
1620 1607 <span class="k">else</span> <span class="s">{</span> | |
1621 1608 <span class="i">$PathsString</span> .= <span class="q">" "</span><span class="sc">;</span> | |
1622 1609 <span class="s">}</span> | |
1623 1610 <span class="i">$PathsString</span> .= <span class="q">"<"</span> . <span class="k">join</span><span class="s">(</span><span class="q">'-'</span><span class="cm">,</span> <span class="i">$Path</span><span class="i">->GetVertices</span><span class="s">(</span><span class="s">)</span><span class="s">)</span> . <span class="q">">"</span><span class="sc">;</span> | |
1624 1611 <span class="s">}</span> | |
1625 1612 <span class="k">return</span> <span class="i">$PathsString</span><span class="sc">;</span> | |
1626 1613 <span class="s">}</span> | |
1627 1614 | |
1628 1615 <span class="c"># Strinigify vertices neighborhoods...</span> | |
1629 1616 <span class="c">#</span> | |
1630 <a name="StringifyVerticesNeighborhoods-"></a>1617 <span class="k">sub </span><span class="m">StringifyVerticesNeighborhoods</span> <span class="s">{</span> | |
1631 1618 <span class="k">my</span><span class="s">(</span><span class="i">$This</span><span class="s">)</span> = <span class="i">@_</span><span class="sc">;</span> | |
1632 1619 <span class="k">my</span><span class="s">(</span><span class="i">$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> | |
1633 1620 | |
1634 1621 <span class="k">if</span> <span class="s">(</span>!<span class="i">@</span>{<span class="i">$This</span>->{<span class="w">VerticesNeighborhoods</span>}}<span class="s">)</span> <span class="s">{</span> | |
1635 1622 <span class="i">$NeighborhoodsString</span> = <span class="q">"<NeighborhoodRadius-NeighborhoodVerticesList>: None"</span><span class="sc">;</span> | |
1636 1623 <span class="k">return</span> <span class="i">$NeighborhoodsString</span><span class="sc">;</span> | |
1637 1624 <span class="s">}</span> | |
1638 1625 <span class="i">$NeighborhoodsString</span> = <span class="q">"<NeighborhoodRadius-NeighborhoodVerticesList>:"</span><span class="sc">;</span> | |
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">$This</span>->{<span class="w">VerticesNeighborhoods</span>}}<span class="s">)</span> <span class="s">{</span> | |
1640 1627 <span class="i">$NeighborhoodVerticesString</span> = <span class="k">join</span><span class="s">(</span><span class="q">','</span><span class="cm">,</span> <span class="i">@</span>{<span class="i">$This</span>->{<span class="w">VerticesNeighborhoods</span>}[<span class="i">$Radius</span>]}<span class="s">)</span><span class="sc">;</span> | |
1641 1628 <span class="i">$NeighborhoodsString</span> .= <span class="q">" <$Radius-$NeighborhoodVerticesString>"</span><span class="sc">;</span> | |
1642 1629 <span class="s">}</span> | |
1643 1630 | |
1644 1631 <span class="k">return</span> <span class="i">$NeighborhoodsString</span><span class="sc">;</span> | |
1645 1632 <span class="s">}</span> | |
1646 1633 | |
1647 1634 <span class="c"># Strinigify vertices neighborhoods...</span> | |
1648 1635 <span class="c">#</span> | |
1649 <a name="StringifyVerticesNeighborhoodsWithSuccessors-"></a>1636 <span class="k">sub </span><span class="m">StringifyVerticesNeighborhoodsWithSuccessors</span> <span class="s">{</span> | |
1650 1637 <span class="k">my</span><span class="s">(</span><span class="i">$This</span><span class="s">)</span> = <span class="i">@_</span><span class="sc">;</span> | |
1651 1638 <span class="k">my</span><span class="s">(</span><span class="i">$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> | |
1652 1639 | |
1653 1640 <span class="k">if</span> <span class="s">(</span>!<span class="i">@</span>{<span class="i">$This</span>->{<span class="w">VerticesNeighborhoodsWithSuccessors</span>}}<span class="s">)</span> <span class="s">{</span> | |
1654 1641 <span class="i">$NeighborhoodsString</span> = <span class="q">"<NeighborhoodRadius-NeighborhoodVertex-NeighborhoodVerticeSuccessorsList>: None"</span><span class="sc">;</span> | |
1655 1642 <span class="k">return</span> <span class="i">$NeighborhoodsString</span><span class="sc">;</span> | |
1656 1643 <span class="s">}</span> | |
1657 1644 <span class="i">$NeighborhoodsString</span> = <span class="q">"<NeighborhoodRadius-NeighborhoodVertex-NeighborhoodVerticeSuccessorsList>: None"</span><span class="sc">;</span> | |
1658 1645 | |
1659 1646 <span class="i">$Radius</span> = <span class="n">0</span><span class="sc">;</span> | |
1660 1647 <span class="k">for</span> <span class="i">$NeighborhoodVertericesWithSuccessorsRef</span> <span class="s">(</span><span class="i">@</span>{<span class="i">$This</span>->{<span class="w">VerticesNeighborhoodsWithSuccessors</span>}}<span class="s">)</span> <span class="s">{</span> | |
1661 1648 <span class="k">for</span> <span class="i">$NeighborhoodVertexWithSuccessorsRef</span> <span class="s">(</span><span class="i">@</span>{<span class="i">$NeighborhoodVertericesWithSuccessorsRef</span>}<span class="s">)</span> <span class="s">{</span> | |
1662 1649 <span class="s">(</span><span class="i">$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> | |
1663 1650 <span class="i">$NeighborhoodVertexSuccessorsString</span> = <span class="q">'None'</span><span class="sc">;</span> | |
1664 1651 <span class="k">if</span> <span class="s">(</span><span class="i">@</span>{<span class="i">$NeighborhoodVertexSuccessorsRef</span>}<span class="s">)</span> <span class="s">{</span> | |
1665 1652 <span class="i">$NeighborhoodVertexSuccessorsString</span> = <span class="k">join</span><span class="s">(</span><span class="q">','</span><span class="cm">,</span> <span class="i">@</span>{<span class="i">$NeighborhoodVertexSuccessorsRef</span>}<span class="s">)</span><span class="sc">;</span> | |
1666 1653 <span class="s">}</span> | |
1667 1654 <span class="i">$NeighborhoodsString</span> .= <span class="q">" <$Radius-$VertexID-$NeighborhoodVertexSuccessorsString>"</span><span class="sc">;</span> | |
1668 1655 <span class="s">}</span> | |
1669 1656 <span class="i">$Radius</span>++<span class="sc">;</span> | |
1670 1657 <span class="s">}</span> | |
1671 1658 <span class="k">return</span> <span class="i">$NeighborhoodsString</span><span class="sc">;</span> | |
1672 1659 <span class="s">}</span> | |
1673 1660 | |
1674 1661 <span class="c"># Return a reference to new paths traversal object...</span> | |
1675 <a name="Copy-"></a>1662 <span class="k">sub </span><span class="m">Copy</span> <span class="s">{</span> | |
1676 1663 <span class="k">my</span><span class="s">(</span><span class="i">$This</span><span class="s">)</span> = <span class="i">@_</span><span class="sc">;</span> | |
1677 1664 <span class="k">my</span><span class="s">(</span><span class="i">$NewPathsTraversal</span><span class="s">)</span><span class="sc">;</span> | |
1678 1665 | |
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> | |
1680 1667 | |
1681 1668 <span class="k">return</span> <span class="i">$NewPathsTraversal</span><span class="sc">;</span> | |
1682 1669 <span class="s">}</span> | |
1683 1670 | |
1684 <a name="EOF-"></a></pre> | |
1685 <p> </p> | |
1686 <br /> | |
1687 <center> | |
1688 <img src="../../../images/h2o2.png"> | |
1689 </center> | |
1690 </body> | |
1691 </html> |