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source: trunk/sources/HeuristicLab.Encodings.SymbolicExpressionTreeEncoding/3.3/Creators/SymbolicExpressionTreeCreator.cs @ 4722

Last change on this file since 4722 was 4722, checked in by swagner, 13 years ago

Merged cloning refactoring branch back into trunk (#922)

File size: 4.2 KB
Line 
1#region License Information
2/* HeuristicLab
3 * Copyright (C) 2002-2010 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 HeuristicLab.Common;
23using HeuristicLab.Core;
24using HeuristicLab.Data;
25using HeuristicLab.Encodings.SymbolicExpressionTreeEncoding.Interfaces;
26using HeuristicLab.Parameters;
27using HeuristicLab.Persistence.Default.CompositeSerializers.Storable;
28
29namespace HeuristicLab.Encodings.SymbolicExpressionTreeEncoding.Creators {
30  /// <summary>
31  /// A base class for operators creating symbolic expression trees.
32  /// </summary>
33  [Item("SymbolicExpressionTreeCreator", "A base class for operators creating symbolic expression trees.")]
34  [StorableClass]
35  public abstract class SymbolicExpressionTreeCreator : SymbolicExpressionTreeOperator, ISymbolicExpressionTreeCreator {
36    private const string MaxFunctionDefinitionsParameterName = "MaxFunctionDefinitions";
37    private const string MaxFunctionArgumentsParameterName = "MaxFunctionArguments";
38    private const string SymbolicExpressionTreeParameterName = "SymbolicExpressionTree";
39    #region Parameter Properties
40    public IValueLookupParameter<IntValue> MaxFunctionDefinitionsParameter {
41      get { return (IValueLookupParameter<IntValue>)Parameters[MaxFunctionDefinitionsParameterName]; }
42    }
43    public IValueLookupParameter<IntValue> MaxFunctionArgumentsParameter {
44      get { return (IValueLookupParameter<IntValue>)Parameters[MaxFunctionArgumentsParameterName]; }
45    }
46    public ILookupParameter<SymbolicExpressionTree> SymbolicExpressionTreeParameter {
47      get { return (ILookupParameter<SymbolicExpressionTree>)Parameters[SymbolicExpressionTreeParameterName]; }
48    }
49    #endregion
50
51    #region Propeties
52    public IntValue MaxFunctionDefinitions {
53      get { return MaxFunctionDefinitionsParameter.ActualValue; }
54    }
55    public IntValue MaxFunctionArguments {
56      get { return MaxFunctionArgumentsParameter.ActualValue; }
57    }
58    public SymbolicExpressionTree SymbolicExpressionTree {
59      get { return SymbolicExpressionTreeParameter.ActualValue; }
60      set { SymbolicExpressionTreeParameter.ActualValue = value; }
61    }
62
63    #endregion
64    [StorableConstructor]
65    protected SymbolicExpressionTreeCreator(bool deserializing) : base(deserializing) { }
66    protected SymbolicExpressionTreeCreator(SymbolicExpressionTreeCreator original, Cloner cloner) : base(original, cloner) { }
67    protected SymbolicExpressionTreeCreator()
68      : base() {
69      Parameters.Add(new ValueLookupParameter<IntValue>(MaxFunctionDefinitionsParameterName, "Maximal number of function definitions in the symbolic expression tree."));
70      Parameters.Add(new ValueLookupParameter<IntValue>(MaxFunctionArgumentsParameterName, "Maximal number of arguments of automatically defined functions in the symbolic expression tree."));
71      Parameters.Add(new LookupParameter<SymbolicExpressionTree>(SymbolicExpressionTreeParameterName, "The symbolic expression tree that should be created."));
72    }
73
74    public sealed override IOperation Apply() {
75      SymbolicExpressionTree = Create(Random, SymbolicExpressionGrammar,
76        MaxTreeSize, MaxTreeHeight, MaxFunctionDefinitions, MaxFunctionArguments);
77      return base.Apply();
78    }
79
80    protected abstract SymbolicExpressionTree Create(
81      IRandom random,
82      ISymbolicExpressionGrammar grammar,
83      IntValue maxTreeSize, IntValue maxTreeHeight,
84      IntValue maxFunctionDefinitions, IntValue maxFunctionArguments
85      );
86  }
87}
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