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source: trunk/sources/HeuristicLab.GP.Operators/3.3/Util.cs @ 2420

Last change on this file since 2420 was 2222, checked in by gkronber, 15 years ago

Merged changes from GP-refactoring branch back into the trunk #713.

File size: 2.0 KB
RevLine 
[2212]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.Collections.Generic;
23using System.Linq;
24using HeuristicLab.Core;
25using HeuristicLab.GP.Interfaces;
26using HeuristicLab.Selection;
27
28namespace HeuristicLab.GP.Operators {
29  internal static class Util {
30    internal static CompositeOperation CreateInitializationOperation(ICollection<IFunctionTree> trees, IScope scope) {
31      // create a backup of sub scopes to restore after initialization
32      Scope backupScope = new Scope("backup");
33      foreach (Scope subScope in scope.SubScopes) {
34        backupScope.AddSubScope(subScope);
35      }
36
37      CompositeOperation initializationOperation = new CompositeOperation();
38      Scope tempScope = new Scope("Temp. initialization scope");
39
40      var parametricTrees = trees.Where(t => t.HasLocalParameters);
41      foreach (IFunctionTree tree in parametricTrees) {
42        initializationOperation.AddOperation(tree.CreateInitOperation(tempScope));
43      }
44      scope.AddSubScope(tempScope);
45      scope.AddSubScope(backupScope);
46      // add an operation to remove the temporary scopes       
47      initializationOperation.AddOperation(new AtomicOperation(new RightReducer(), scope));
48      return initializationOperation;
49    }
50  }
51}
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