[2757] | 1 | #region License Information
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| 2 | /* HeuristicLab
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[14186] | 3 | * Copyright (C) 2002-2016 Heuristic and Evolutionary Algorithms Laboratory (HEAL)
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[2757] | 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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[4722] | 23 | using HeuristicLab.Common;
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[2757] | 24 | using HeuristicLab.Core;
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| 25 | using HeuristicLab.Data;
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| 26 | using HeuristicLab.Parameters;
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| 27 | using HeuristicLab.Persistence.Default.CompositeSerializers.Storable;
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| 28 |
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| 29 | namespace HeuristicLab.Operators {
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| 30 | /// <summary>
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[2794] | 31 | /// An operator which compares two items.
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[2757] | 32 | /// </summary>
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| 33 | [Item("Comparator", "An operator which compares two items.")]
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[3017] | 34 | [StorableClass]
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[2757] | 35 | public sealed class Comparator : SingleSuccessorOperator {
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| 36 | public LookupParameter<IItem> LeftSideParameter {
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| 37 | get { return (LookupParameter<IItem>)Parameters["LeftSide"]; }
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| 38 | }
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| 39 | public ValueLookupParameter<IItem> RightSideParameter {
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| 40 | get { return (ValueLookupParameter<IItem>)Parameters["RightSide"]; }
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| 41 | }
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[3048] | 42 | private ValueParameter<Comparison> ComparisonParameter {
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| 43 | get { return (ValueParameter<Comparison>)Parameters["Comparison"]; }
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[2757] | 44 | }
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[3048] | 45 | public LookupParameter<BoolValue> ResultParameter {
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| 46 | get { return (LookupParameter<BoolValue>)Parameters["Result"]; }
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[2757] | 47 | }
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[3048] | 48 | public Comparison Comparison {
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[2757] | 49 | get { return ComparisonParameter.Value; }
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| 50 | set { ComparisonParameter.Value = value; }
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| 51 | }
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| 52 |
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[4722] | 53 | [StorableConstructor]
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| 54 | private Comparator(bool deserializing) : base(deserializing) { }
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| 55 | private Comparator(Comparator original, Cloner cloner)
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| 56 | : base(original, cloner) {
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| 57 | }
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[2757] | 58 | public Comparator()
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| 59 | : base() {
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| 60 | Parameters.Add(new LookupParameter<IItem>("LeftSide", "The left side of the comparison."));
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| 61 | Parameters.Add(new ValueLookupParameter<IItem>("RightSide", "The right side of the comparison."));
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[3048] | 62 | Parameters.Add(new ValueParameter<Comparison>("Comparison", "The type of comparison.", new Comparison(Data.ComparisonType.Equal)));
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| 63 | Parameters.Add(new LookupParameter<BoolValue>("Result", "The result of the comparison."));
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[2757] | 64 | }
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| 65 |
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[4722] | 66 | public override IDeepCloneable Clone(Cloner cloner) {
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| 67 | return new Comparator(this, cloner);
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| 68 | }
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| 69 |
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[2834] | 70 | public override IOperation Apply() {
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[2757] | 71 | IItem left = LeftSideParameter.ActualValue;
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| 72 | IItem right = RightSideParameter.ActualValue;
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| 73 | IComparable comparable = left as IComparable;
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| 74 | if (comparable == null) throw new InvalidOperationException();
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| 75 |
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| 76 | int i = comparable.CompareTo(right);
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| 77 | bool b = false;
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| 78 | switch (Comparison.Value) {
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[3048] | 79 | case HeuristicLab.Data.ComparisonType.Less:
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[2757] | 80 | b = i < 0; break;
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[3048] | 81 | case HeuristicLab.Data.ComparisonType.LessOrEqual:
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[2757] | 82 | b = i <= 0; break;
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[3048] | 83 | case HeuristicLab.Data.ComparisonType.Equal:
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[2757] | 84 | b = i == 0; break;
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[3048] | 85 | case HeuristicLab.Data.ComparisonType.GreaterOrEqual:
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[2831] | 86 | b = i >= 0; break;
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[3048] | 87 | case HeuristicLab.Data.ComparisonType.Greater:
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[2757] | 88 | b = i > 0; break;
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[3048] | 89 | case HeuristicLab.Data.ComparisonType.NotEqual:
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[2757] | 90 | b = i != 0; break;
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| 91 | }
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[3048] | 92 | ResultParameter.ActualValue = new BoolValue(b);
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[2757] | 93 | return base.Apply();
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| 94 | }
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| 95 | }
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| 96 | }
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