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source: branches/HL-3.2-MonoMigration/HeuristicLab.Operators/ConditionalBranch.cs @ 755

Last change on this file since 755 was 49, checked in by swagner, 17 years ago

Updated operator description

File size: 2.1 KB
Line 
1#region License Information
2/* HeuristicLab
3 * Copyright (C) 2002-2008 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.Text;
25using HeuristicLab.Core;
26using HeuristicLab.Data;
27
28namespace HeuristicLab.Operators {
29  public class ConditionalBranch : OperatorBase {
30    public override string Description {
31      get { return @"ConditionalBranch expects to have 1 or 2 sub-operators.
32It will return the 1st sub-operator if ""Condition"" is true and the 2nd sub-operator if ""Condition"" equals to false.
33
34In case a 2nd sub-operator does not exist and ""Condition"" would equal to false, Conditional Branch will not return a new operation."; }
35    }
36
37    public ConditionalBranch()
38      : base() {
39      AddVariableInfo(new VariableInfo("Condition", "A boolean variable that decides the branch", typeof(BoolData), VariableKind.In));
40    }
41
42    public override IOperation Apply(IScope scope) {
43      BoolData resultData = GetVariableValue<BoolData>("Condition", scope, true);
44      bool result = resultData.Data;
45
46      if ((result) && (SubOperators.Count > 0) && (SubOperators[0] != null))
47        return new AtomicOperation(SubOperators[0], scope);
48      else if ((!result) && (SubOperators.Count > 1) && (SubOperators[1] != null))
49        return new AtomicOperation(SubOperators[1], scope);
50      return null;
51    }
52  }
53}
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