#region License Information /* HeuristicLab * Copyright (C) 2002-2018 Heuristic and Evolutionary Algorithms Laboratory (HEAL) * * This file is part of HeuristicLab. * * HeuristicLab is free software: you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation, either version 3 of the License, or * (at your option) any later version. * * HeuristicLab is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with HeuristicLab. If not, see . */ #endregion using HeuristicLab.Common; using HeuristicLab.Core; using HeuristicLab.Data; using HeuristicLab.Parameters; using HeuristicLab.Persistence.Default.CompositeSerializers.Storable; namespace HeuristicLab.Operators { /// /// A branch of two operators whose executions depend on a condition. /// [Item("ConditionalBranch", "A branch of two operators whose executions depend on a boolean condition. If the boolean condition is not present, the false branch is executed.")] [StorableClass] public class ConditionalBranch : SingleSuccessorOperator { public LookupParameter ConditionParameter { get { return (LookupParameter)Parameters["Condition"]; } } protected OperatorParameter TrueBranchParameter { get { return (OperatorParameter)Parameters["TrueBranch"]; } } protected OperatorParameter FalseBranchParameter { get { return (OperatorParameter)Parameters["FalseBranch"]; } } public IOperator TrueBranch { get { return TrueBranchParameter.Value; } set { TrueBranchParameter.Value = value; } } public IOperator FalseBranch { get { return FalseBranchParameter.Value; } set { FalseBranchParameter.Value = value; } } [StorableConstructor] protected ConditionalBranch(bool deserializing) : base(deserializing) { } protected ConditionalBranch(ConditionalBranch original, Cloner cloner) : base(original, cloner) { } public ConditionalBranch() : base() { Parameters.Add(new LookupParameter("Condition", "A boolean variable which defines which branch is executed.")); Parameters.Add(new OperatorParameter("TrueBranch", "The operator which is executed if the condition is true.")); Parameters.Add(new OperatorParameter("FalseBranch", "The operator which is executed if the condition is false.")); } public override IDeepCloneable Clone(Cloner cloner) { return new ConditionalBranch(this, cloner); } public override IOperation Apply() { OperationCollection next = new OperationCollection(base.Apply()); if (ConditionParameter.ActualValue != null && ConditionParameter.ActualValue.Value) { if (TrueBranch != null) next.Insert(0, ExecutionContext.CreateOperation(TrueBranch)); } else { if (FalseBranch != null) next.Insert(0, ExecutionContext.CreateOperation(FalseBranch)); } return next; } } }