Free cookie consent management tool by TermsFeed Policy Generator

source: branches/Robocode.TrunkInt/HeuristicLab.Problems.Robocode/3.3/Symbols/Statements/IfThenElseStat.cs @ 13013

Last change on this file since 13013 was 13013, checked in by gkronber, 8 years ago

#2069: reviewing and minor changes

File size: 2.9 KB
Line 
1#region License Information
2/* HeuristicLab
3 * Copyright (C) 2002-2015 Heuristic and Evolutionary Algorithms Laboratory (HEAL)
4 *
5 * This file is part of HeuristicLab.
6 *
7 * HeuristicLab is free software: you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation, either version 3 of the License, or
10 * (at your option) any later version.
11 *
12 * HeuristicLab is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
15 * GNU General Public License for more details.
16 *
17 * You should have received a copy of the GNU General Public License
18 * along with HeuristicLab. If not, see <http://www.gnu.org/licenses/>.
19 */
20#endregion
21
22using System;
23using System.Collections.Generic;
24using System.Linq;
25using HeuristicLab.Common;
26using HeuristicLab.Encodings.SymbolicExpressionTreeEncoding;
27using HeuristicLab.Persistence.Default.CompositeSerializers.Storable;
28
29namespace HeuristicLab.Problems.GeneticProgramming.Robocode {
30  [StorableClass]
31  public class IfThenElseStat : CodeNode {
32    public override int MinimumArity { get { return 2; } }
33    public override int MaximumArity { get { return 3; } }
34
35    [Storable]
36    public override string Prefix { get; set; }
37
38    [Storable]
39    public override string Suffix { get; set; }
40
41    [StorableConstructor]
42    protected IfThenElseStat(bool deserializing) : base(deserializing) { }
43    protected IfThenElseStat(IfThenElseStat original, Cloner cloner) : base(original, cloner) { }
44
45    public IfThenElseStat() : base("IfThenElseStat", "An if statement.") { }
46
47    public override IDeepCloneable Clone(Cloner cloner) {
48      return new IfThenElseStat(this, cloner);
49    }
50
51    public override string Interpret(ISymbolicExpressionTreeNode node, IEnumerable<ISymbolicExpressionTreeNode> children) {
52      ISymbolicExpressionTreeNode condition = null, truePart = null, falsePart = null;
53      string[] parts = new string[3];
54
55      if (children.Count() < 2 || children.Count() > 3)
56        throw new Exception("Unexpected number of children. Expected 2 or 3 children.");
57
58      var childLst = children.ToList();
59      condition = childLst[0];
60      truePart = childLst[1];
61      if (childLst.Count == 3)
62        falsePart = childLst[2];
63
64      parts[0] = ((CodeNode)condition.Symbol).Interpret(condition, condition.Subtrees);
65      parts[1] = ((CodeNode)truePart.Symbol).Interpret(truePart, truePart.Subtrees);
66      if (childLst.Count == 3) parts[2] = ((CodeNode)falsePart.Symbol).Interpret(falsePart, falsePart.Subtrees);
67
68      string result = "if (" + parts[0] + ") {" + parts[1] + "}";
69      if (!string.IsNullOrEmpty(parts[2]))
70        result += " else {" + result[2] + "}";
71      return result;
72    }
73  }
74}
Note: See TracBrowser for help on using the repository browser.