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source: branches/Robocode.TrunkInt/HeuristicLab.Problems.Robocode/3.3/Symbols/Numerical Expressions/NumericalExpression.cs @ 10046

Last change on this file since 10046 was 10046, checked in by ascheibe, 11 years ago

#2069 simplified Interpret methods of symbols

File size: 2.7 KB
Line 
1#region License Information
2/* HeuristicLab
3 * Copyright (C) 2002-2013 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.Robocode {
30  [StorableClass]
31  public class NumericalExpression : CodeNode {
32    public override int MinimumArity { get { return 1; } }
33    public override int MaximumArity { get { return 1; } }
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 NumericalExpression(bool deserializing) : base(deserializing) { }
43    protected NumericalExpression(NumericalExpression original, Cloner cloner) : base(original, cloner) { }
44
45    public NumericalExpression() : base("NumericalExpression", "A numerical expression.") { }
46
47    public override IDeepCloneable Clone(Cloner cloner) {
48      return new NumericalExpression(this, cloner);
49    }
50
51    public override string Interpret(ISymbolicExpressionTreeNode node, IEnumerable<ISymbolicExpressionTreeNode> children) {
52      if (children.Count() != 1)
53        throw new ArgumentException("Expected 1 child in NumericalExpression.", "children");
54
55      var exprTree = children.Single();
56      var symbol = exprTree.Symbol;
57      if (!(symbol is Number || symbol is INumericalMethod || symbol is INumericalOperator))
58        throw new System.Exception("NumericalExpression was given a child of type " + symbol.GetType() +
59            ". The expected child must be of type " + typeof(Number)
60                                           + " or " + typeof(INumericalMethod)
61                                           + " or " + typeof(INumericalOperator) + ".");
62
63      return Prefix + ((CodeNode)symbol).Interpret(exprTree, exprTree.Subtrees) + Suffix;
64    }
65  }
66}
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