1 | using System;
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2 | using System.Diagnostics;
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3 | using System.IO;
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4 | using HeuristicLab.Algorithms.DataAnalysis.SymRegGrammarEnumeration.GrammarEnumeration;
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5 | using HeuristicLab.Common;
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6 | using HeuristicLab.Core;
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7 | using HeuristicLab.Persistence.Default.CompositeSerializers.Storable;
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8 |
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9 | namespace HeuristicLab.Algorithms.DataAnalysis.SymRegGrammarEnumeration {
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10 | [Item("SearchGraphVisualizer", "")]
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11 | [StorableClass]
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12 | internal class SearchGraphVisualizer : Item, IGrammarEnumerationAnalyzer {
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13 | private readonly string dotFileName = Environment.GetFolderPath(Environment.SpecialFolder.DesktopDirectory) + @"\searchgraph.dot";
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14 |
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15 | private TextWriterTraceListener dotFileTrace;
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16 |
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17 | public SearchGraphVisualizer() { }
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18 |
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19 | protected SearchGraphVisualizer(SearchGraphVisualizer original, Cloner cloner) : base(original, cloner) { }
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20 |
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21 | [StorableConstructor]
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22 | protected SearchGraphVisualizer(bool deserializing) : base(deserializing) { }
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23 |
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24 | public override IDeepCloneable Clone(Cloner cloner) {
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25 | return new SearchGraphVisualizer(this, cloner);
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26 | }
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27 |
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28 | public void Register(GrammarEnumerationAlgorithm algorithm) {
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29 | algorithm.Started += GrammarEnumerationAlgorithmOnStarted;
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30 | algorithm.Stopped += GrammarEnumerationAlgorithmOnStopped;
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31 | algorithm.ExceptionOccurred += GrammarEnumerationAlgorithmOnStopped;
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32 |
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33 | algorithm.PhraseFetched += PhraseFetched;
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34 | algorithm.PhraseDerived += PhraseDerived;
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35 | algorithm.SentenceGenerated += SentenceGenerated;
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36 | }
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37 |
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38 | public void Deregister(GrammarEnumerationAlgorithm algorithm) {
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39 | algorithm.Started -= GrammarEnumerationAlgorithmOnStarted;
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40 | algorithm.Stopped -= GrammarEnumerationAlgorithmOnStopped;
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41 | algorithm.ExceptionOccurred -= GrammarEnumerationAlgorithmOnStopped;
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42 |
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43 | algorithm.PhraseFetched -= PhraseFetched;
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44 | algorithm.PhraseDerived -= PhraseDerived;
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45 | algorithm.SentenceGenerated -= SentenceGenerated;
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46 | }
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47 |
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48 | private void GrammarEnumerationAlgorithmOnStarted(object sender, EventArgs eventArgs) {
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49 | dotFileTrace = new TextWriterTraceListener(new FileStream(dotFileName, FileMode.Create));
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50 | ((StreamWriter)dotFileTrace.Writer).AutoFlush = true;
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51 | dotFileTrace.WriteLine("digraph searchgraph { pad=0.02; nodesep=0.3; ranksep=0.02;ratio=0.5625;");
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52 | }
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53 |
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54 | private void GrammarEnumerationAlgorithmOnStopped(object sender, EventArgs eventArgs) {
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55 | try {
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56 | var alg = (GrammarEnumerationAlgorithm)sender;
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57 | var phrase0 = new SymbolString(new[] { alg.Grammar.StartSymbol });
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58 | var phrase0Hash = alg.Grammar.Hasher.CalcHashCode(phrase0);
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59 |
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60 | dotFileTrace.WriteLine($"{phrase0Hash} [label=\"{phrase0}\", shape=doublecircle]; }}");
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61 | dotFileTrace.Flush();
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62 | } catch (Exception) {
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63 | dotFileTrace.Close();
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64 | throw;
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65 | }
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66 | }
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67 |
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68 | private void PhraseFetched(object sender, PhraseEventArgs phraseEventArgs) {
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69 | dotFileTrace.WriteLine($"{phraseEventArgs.Hash} [label=\"{phraseEventArgs.Phrase}\"];");
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70 | }
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71 |
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72 | private void PhraseDerived(object sender, PhraseAddedEventArgs args) {
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73 | dotFileTrace.WriteLine($"{args.ParentHash} -> {args.NewHash} [label=\"{args.ExpandedSymbol.StringRepresentation} + → {args.ExpandedProduction}\"];");
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74 | }
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75 |
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76 | private void SentenceGenerated(object sender, PhraseAddedEventArgs args) {
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77 | var alg = (GrammarEnumerationAlgorithm)sender;
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78 | dotFileTrace.WriteLine($"{args.NewHash} [label=\"{alg.Grammar.ToInfixString(args.NewPhrase)}\", style=\"filled\", fillcolor=\"#f79423\", color=\"#f79423\"];");
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79 | }
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80 | }
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81 | }
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