1 | #region License Information
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2 | /* HeuristicLab
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3 | * Copyright (C) 2002-2008 Heuristic and Evolutionary Algorithms Laboratory (HEAL)
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4 | *
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5 | * This file is part of HeuristicLab.
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6 | *
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7 | * HeuristicLab is free software: you can redistribute it and/or modify
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8 | * it under the terms of the GNU General Public License as published by
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9 | * the Free Software Foundation, either version 3 of the License, or
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10 | * (at your option) any later version.
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11 | *
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12 | * HeuristicLab is distributed in the hope that it will be useful,
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13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
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14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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15 | * GNU General Public License for more details.
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16 | *
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17 | * You should have received a copy of the GNU General Public License
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18 | * along with HeuristicLab. If not, see <http://www.gnu.org/licenses/>.
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19 | */
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20 | #endregion
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21 |
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22 | using System;
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23 | using System.Collections.Generic;
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24 | using System.Text;
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25 | using HeuristicLab.Core;
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26 | using HeuristicLab.Data;
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27 |
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28 | namespace HeuristicLab.Operators {
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29 | public class ConditionalBranch : OperatorBase {
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30 | public override string Description {
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31 | get { return @"ConditionalBranch expects to have 1 or 2 sub-operators.
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32 | It will return the 1st sub-operator if ""Condition"" is true and the 2nd sub-operator if ""Condition"" equals to false.
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33 |
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34 | In case a 2nd sub-operator does not exist and ""Condition"" would equal to false, Conditional Branch will not return a new operation."; }
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35 | }
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36 |
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37 | public ConditionalBranch()
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38 | : base() {
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39 | AddVariableInfo(new VariableInfo("Condition", "A boolean variable that decides the branch", typeof(BoolData), VariableKind.In));
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40 | }
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41 |
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42 | public override IOperation Apply(IScope scope) {
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43 | BoolData resultData = GetVariableValue<BoolData>("Condition", scope, true);
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44 | bool result = resultData.Data;
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45 |
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46 | if ((result) && (SubOperators.Count > 0) && (SubOperators[0] != null))
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47 | return new AtomicOperation(SubOperators[0], scope);
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48 | else if ((!result) && (SubOperators.Count > 1) && (SubOperators[1] != null))
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49 | return new AtomicOperation(SubOperators[1], scope);
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50 | return null;
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51 | }
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52 | }
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53 | }
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