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source: branches/Collections/sources/HeuristicLab.Operators/DelegatingOperator.cs @ 771

Last change on this file since 771 was 113, checked in by swagner, 17 years ago

Closed ticket #93

  • fixed handling of local variables in DelegatingOperator
File size: 2.4 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 abstract class DelegatingOperator : OperatorBase {
30    public override IOperation Execute(IScope scope) {
31      myCanceled = false;
32
33      if(scope.GetVariable(Guid.ToString()) == null) { // contained operator not yet executed
34        // add marker
35        scope.AddVariable(new Variable(Guid.ToString(), new NullData()));
36
37        // add aliases and local variables
38        foreach (IVariableInfo variableInfo in VariableInfos) {
39          scope.AddAlias(variableInfo.FormalName, variableInfo.ActualName);
40          if (variableInfo.Local)
41            scope.AddVariable(GetVariable(variableInfo.ActualName));
42        }
43
44        CompositeOperation next = new CompositeOperation();
45        next.AddOperation(Apply(scope));
46        // execute combined operator again after contained operators have been executed
47        next.AddOperation(new AtomicOperation(this, scope));
48
49        OnExecuted();
50        return next;
51      } else {  // contained operator already executed
52        // remove marker
53        scope.RemoveVariable(Guid.ToString());
54
55        // remove aliases and local variables
56        foreach (IVariableInfo variableInfo in VariableInfos) {
57          scope.RemoveAlias(variableInfo.FormalName);
58          if (variableInfo.Local)
59            scope.RemoveVariable(variableInfo.ActualName);
60        }
61
62        OnExecuted();
63        return null;
64      }
65    }
66  }
67}
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