1 | #region License Information
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2 | /* HeuristicLab
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3 | * Copyright (C) 2002-2013 Heuristic and Evolutionary Algorithms Laboratory (HEAL)
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4 | *
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5 | * This file is part of HeuristicLab.
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6 | *
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7 | * HeuristicLab is free software: you can redistribute it and/or modify
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8 | * it under the terms of the GNU General Public License as published by
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9 | * the Free Software Foundation, either version 3 of the License, or
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10 | * (at your option) any later version.
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11 | *
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12 | * HeuristicLab is distributed in the hope that it will be useful,
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13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
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14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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15 | * GNU General Public License for more details.
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16 | *
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17 | * You should have received a copy of the GNU General Public License
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18 | * along with HeuristicLab. If not, see <http://www.gnu.org/licenses/>.
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19 | */
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20 | #endregion
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21 |
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22 | using HeuristicLab.Common;
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23 | using HeuristicLab.Encodings.SymbolicExpressionTreeEncoding;
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24 | using HeuristicLab.Persistence.Default.CompositeSerializers.Storable;
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25 |
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26 | namespace HeuristicLab.Problems.Robocode {
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27 | [StorableClass]
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28 | public class LogicalComparison : CodeNode {
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29 | public override int MinimumArity { get { return 3; } }
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30 | public override int MaximumArity { get { return 3; } }
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31 |
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32 | [Storable]
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33 | public override string Prefix { get; set; }
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34 |
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35 | [Storable]
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36 | public override string Suffix { get; set; }
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37 |
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38 | [StorableConstructor]
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39 | private LogicalComparison(bool deserializing) : base(deserializing) { }
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40 | private LogicalComparison(LogicalComparison original, Cloner cloner)
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41 | : base(original, cloner) {
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42 | }
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43 |
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44 | public LogicalComparison()
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45 | : base("LogicalComparison", "A LogicalComparison.") {
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46 | this.Prefix = "(";
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47 | this.Suffix = ")";
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48 | }
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49 |
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50 | public override IDeepCloneable Clone(Cloner cloner) {
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51 | return new LogicalComparison(this, cloner);
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52 | }
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53 |
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54 | public override string Interpret(ISymbolicExpressionTreeNode node, System.Collections.Generic.IEnumerable<ISymbolicExpressionTreeNode> children) {
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55 | ISymbolicExpressionTreeNode condition = null, lhs = null, rhs = null;
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56 | var enumerator = children.GetEnumerator();
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57 | int childCount = 0;
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58 | while (enumerator.MoveNext()) {
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59 | childCount++;
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60 | switch (childCount) {
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61 | case 1: condition = enumerator.Current; break;
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62 | case 2: lhs = enumerator.Current; break;
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63 | case 3: rhs = enumerator.Current; break;
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64 | default: throw new System.Exception("Unexpected number of children. Expected 3 children.");
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65 | }
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66 | }
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67 | if (childCount < 3) throw new System.Exception("Unexpected number of children. Expected 3 children.");
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68 |
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69 | if (!(condition.Symbol is Conjunction || condition.Symbol is Disjunction))
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70 | throw new System.Exception("Unexpected first child for LogicalComparison of type: " +
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71 | condition.GetType().ToString() + ". Expected " + typeof(Conjunction).ToString() +
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72 | " or " + typeof(Disjunction).ToString() + ".");
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73 |
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74 | // TODO Check children 2 & 3 for correct types
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75 |
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76 | string[] result = new string[]
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77 | {
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78 | ((CodeNode)condition.Symbol).Interpret(condition, condition.Subtrees),
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79 | ((CodeNode)lhs.Symbol).Interpret(lhs, lhs.Subtrees),
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80 | ((CodeNode)rhs.Symbol).Interpret(rhs, rhs.Subtrees)
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81 | };
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82 |
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83 | return this.Prefix + " " + result[1] + " " + result[0] + " " + result[2] + " " + this.Suffix;
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84 | }
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85 | }
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86 | }
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