#region License Information /* HeuristicLab * Copyright (C) 2002-2011 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.Operators; using HeuristicLab.Optimization; using HeuristicLab.Parameters; using HeuristicLab.Persistence.Default.CompositeSerializers.Storable; namespace HeuristicLab.Encodings.SymbolicExpressionTreeEncoding { /// /// A base class for operators for symbolic expression trees. /// [Item("SymbolicExpressionTreeOperator", "A base class for operators for symbolic expression trees.")] [StorableClass] public abstract class SymbolicExpressionTreeOperator : SingleSuccessorOperator, IStochasticOperator, ISymbolicExpressionTreeOperator { private const string RandomParameterName = "Random"; public override bool CanChangeName { get { return false; } } #region Parameter Properties public ILookupParameter RandomParameter { get { return (LookupParameter)Parameters[RandomParameterName]; } } #endregion #region Properties public IRandom Random { get { return RandomParameter.ActualValue; } } #endregion [StorableConstructor] protected SymbolicExpressionTreeOperator(bool deserializing) : base(deserializing) { } protected SymbolicExpressionTreeOperator(SymbolicExpressionTreeOperator original, Cloner cloner) : base(original, cloner) { } protected SymbolicExpressionTreeOperator() : base() { Parameters.Add(new LookupParameter(RandomParameterName, "The pseudo random number generator which should be used for symbolic expression tree operators.")); } } }