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[11732] | 1 | using System;
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| 2 |
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| 3 | namespace HeuristicLab.Problems.GrammaticalOptimization {
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| 4 | public class ReadonlySequence : Sequence {
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| 5 | public ReadonlySequence(string s)
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| 6 | : base(s) {
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| 7 | }
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| 8 |
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| 9 | public ReadonlySequence(char ch)
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| 10 | : base(ch) {
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| 11 | }
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| 12 |
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| 13 | public ReadonlySequence(Sequence s)
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| 14 | : base(s) {
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| 15 | }
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| 16 |
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| 17 | public override void ReplaceAt(int position, int len, Sequence replacement) {
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| 18 | throw new NotSupportedException();
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| 19 | }
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| 20 |
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| 21 | public override bool Equals(object obj) {
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| 22 | var other = obj as Sequence;
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| 23 | if (other == null) return false;
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| 24 | if (other.Length != this.Length) return false;
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| 25 | for (int i = 0; i < Length; i++)
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| 26 | if (other[i] != this[i]) return false;
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| 27 |
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| 28 | // length and all symbols are the same
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| 29 | return true;
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| 30 | }
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| 31 |
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| 32 | public override int GetHashCode() {
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| 33 | int h = 31 * Length;
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| 34 | foreach (var ch in this) { h += 31 * (byte)h; }
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| 35 | return h;
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| 36 | }
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| 37 | }
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| 38 | } |
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