1 | #region License Information
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2 | /* HeuristicLab
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3 | * Copyright (C) 2002-2015 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.Reflection;
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24 | using HeuristicLab.Common;
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25 | using HeuristicLab.Core;
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26 | using HeuristicLab.Encodings.SymbolicExpressionTreeEncoding;
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27 | using HeuristicLab.Persistence.Default.CompositeSerializers.Storable;
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28 | namespace HeuristicLab.Problems.DataAnalysis.Symbolic {
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29 | [StorableClass]
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30 | [Item("FunctionSymbol", "Symbol that wraps a user-defined binary operation.")]
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31 | public sealed class FunctionSymbol : Symbol {
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32 | private int minimumArity = 2;
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33 | private int maximumArity = 2;
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34 |
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35 | public override int MinimumArity {
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36 | get { return minimumArity; }
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37 | }
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38 | public override int MaximumArity {
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39 | get { return maximumArity; }
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40 | }
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41 |
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42 | //[Storable]
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43 | private MethodInfo methodInfo;
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44 | public MethodInfo MethodInfo {
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45 | get { return methodInfo; }
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46 | private set { methodInfo = value; }
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47 | }
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48 |
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49 | [StorableConstructor]
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50 | private FunctionSymbol(bool deserializing) : base(deserializing) { }
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51 |
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52 | private FunctionSymbol(FunctionSymbol original, Cloner cloner) : base(original, cloner) {
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53 | this.MethodInfo = original.MethodInfo; // symbols are cached so we also cache the MethodInfo in order to optimize the performance of the interpreter
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54 | }
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55 | public override IDeepCloneable Clone(Cloner cloner) {
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56 | return new FunctionSymbol(this, cloner);
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57 | }
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58 |
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59 | public FunctionSymbol(string name, Func<double, double> f) : base(name, "Symbol that wraps a user-defined unary operation.") {
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60 | MethodInfo = f.GetMethodInfo();
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61 | minimumArity = maximumArity = 1;
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62 | }
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63 |
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64 | public FunctionSymbol(string name, Func<double, double, double> f) : base(name, "Symbol that wraps a user-defined binary operation.") {
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65 | MethodInfo = f.GetMethodInfo();
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66 | minimumArity = maximumArity = 2;
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67 | }
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68 |
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69 | public FunctionSymbol(string name, Func<double, double, double, double> f) : base(name, "Symbol that wraps a user-defined tertiary operation.") {
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70 | MethodInfo = f.GetMethodInfo();
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71 | minimumArity = maximumArity = 3;
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72 | }
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73 |
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74 | public FunctionSymbol(string name, Func<double, double, double, double, double> f) : base(name, "Symbol that wraps a user-defined quaternary operation.") {
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75 | MethodInfo = f.GetMethodInfo();
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76 | minimumArity = maximumArity = 4;
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77 | }
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78 | }
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79 | }
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