[3253] | 1 | #region License Information
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| 2 | /* HeuristicLab
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[12009] | 3 | * Copyright (C) 2002-2015 Heuristic and Evolutionary Algorithms Laboratory (HEAL)
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[3253] | 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.Collections.Generic;
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[4722] | 23 | using HeuristicLab.Common;
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[3253] | 24 | using HeuristicLab.Core;
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[4068] | 25 | using HeuristicLab.Encodings.SymbolicExpressionTreeEncoding;
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[3253] | 26 | using HeuristicLab.Persistence.Default.CompositeSerializers.Storable;
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[6803] | 27 | using HeuristicLab.PluginInfrastructure;
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[5574] | 28 |
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[3373] | 29 | namespace HeuristicLab.Problems.DataAnalysis.Symbolic {
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[6803] | 30 | [NonDiscoverableType]
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[3253] | 31 | [StorableClass]
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[3294] | 32 | [Item("ArithmeticExpressionGrammar", "Represents a grammar for functional expressions using only arithmetic operations.")]
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[5686] | 33 | public class ArithmeticExpressionGrammar : SymbolicExpressionGrammar, ISymbolicDataAnalysisGrammar {
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[4722] | 34 |
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| 35 | [StorableConstructor]
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| 36 | protected ArithmeticExpressionGrammar(bool deserializing) : base(deserializing) { }
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| 37 | protected ArithmeticExpressionGrammar(ArithmeticExpressionGrammar original, Cloner cloner) : base(original, cloner) { }
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[3294] | 38 | public ArithmeticExpressionGrammar()
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[5688] | 39 | : base(ItemAttribute.GetName(typeof(ArithmeticExpressionGrammar)), ItemAttribute.GetDescription(typeof(ArithmeticExpressionGrammar))) {
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[3294] | 40 | Initialize();
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[3253] | 41 | }
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[4722] | 42 | public override IDeepCloneable Clone(Cloner cloner) {
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| 43 | return new ArithmeticExpressionGrammar(this, cloner);
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| 44 | }
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[3253] | 45 |
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[3294] | 46 | private void Initialize() {
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| 47 | var add = new Addition();
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| 48 | var sub = new Subtraction();
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| 49 | var mul = new Multiplication();
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| 50 | var div = new Division();
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| 51 | var constant = new Constant();
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[3442] | 52 | constant.MinValue = -20;
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| 53 | constant.MaxValue = 20;
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[5574] | 54 | var variableSymbol = new HeuristicLab.Problems.DataAnalysis.Symbolic.Variable();
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[3253] | 55 |
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[3294] | 56 | var allSymbols = new List<Symbol>() { add, sub, mul, div, constant, variableSymbol };
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| 57 | var functionSymbols = new List<Symbol>() { add, sub, mul, div };
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[3373] | 58 |
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[3338] | 59 | foreach (var symb in allSymbols)
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| 60 | AddSymbol(symb);
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[3253] | 61 |
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[3338] | 62 | foreach (var funSymb in functionSymbols) {
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[5686] | 63 | SetSubtreeCount(funSymb, 1, 3);
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[3338] | 64 | }
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[5686] | 65 | SetSubtreeCount(constant, 0, 0);
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| 66 | SetSubtreeCount(variableSymbol, 0, 0);
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[3253] | 67 |
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[3338] | 68 | // allow each symbol as child of the start symbol
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| 69 | foreach (var symb in allSymbols) {
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[5686] | 70 | AddAllowedChildSymbol(StartSymbol, symb);
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[5726] | 71 | AddAllowedChildSymbol(DefunSymbol, symb);
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[3338] | 72 | }
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| 73 |
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| 74 | // allow each symbol as child of every other symbol (except for terminals that have maxSubtreeCount == 0)
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[5686] | 75 | foreach (var parent in functionSymbols) {
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| 76 | foreach (var child in allSymbols)
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| 77 | AddAllowedChildSymbol(parent, child);
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[3253] | 78 | }
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| 79 | }
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| 80 | }
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| 81 | }
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