Last change
on this file since 17578 was
17434,
checked in by bburlacu, 5 years ago
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#1772: Merge trunk changes and fix all errors and compilation warnings.
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File size:
1.1 KB
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1 | using System;
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2 | using System.Collections.Generic;
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3 | using HeuristicLab.Encodings.SymbolicExpressionTreeEncoding;
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4 | using HEAL.Attic;
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5 |
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6 | namespace HeuristicLab.Problems.DataAnalysis.Symbolic {
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7 | [StorableType("535830d4-551e-4b53-97e3-9605bd7e785f")]
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8 | public class SymbolicExpressionTreeEqualityComparer : IEqualityComparer<ISymbolicExpressionTree> {
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9 | [Storable]
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10 | public SymbolicExpressionTreeNodeEqualityComparer SimilarityComparer { get; set; }
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11 |
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12 |
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13 | [StorableConstructor]
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14 | protected SymbolicExpressionTreeEqualityComparer(StorableConstructorFlag _) { }
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15 | public SymbolicExpressionTreeEqualityComparer() { }
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16 |
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17 | public bool Equals(ISymbolicExpressionTree a, ISymbolicExpressionTree b) {
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18 | if (SimilarityComparer == null) throw new Exception("SimilarityComparer needs to be initialized first.");
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19 | return a.Length == b.Length && SymbolicExpressionTreeMatching.Match(a.Root, b.Root, SimilarityComparer) == Math.Min(a.Length, b.Length);
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20 | }
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21 |
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22 | public int GetHashCode(ISymbolicExpressionTree tree) {
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23 | return (tree.Length << 8) % 12345;
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24 | }
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25 |
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26 | }
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27 | }
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