[15828] | 1 | using System;
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[15975] | 2 | using System.Collections;
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[15828] | 3 | using System.Collections.Generic;
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[15975] | 4 | using System.Linq;
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[15960] | 5 | using HeuristicLab.Common;
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| 6 | using HeuristicLab.Persistence.Default.CompositeSerializers.Storable;
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[15712] | 7 |
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| 8 | namespace HeuristicLab.Algorithms.DataAnalysis.SymRegGrammarEnumeration {
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[15960] | 9 | [StorableClass]
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| 10 | public abstract class Symbol : DeepCloneable, IEquatable<Symbol> {
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| 11 | [Storable]
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[15828] | 12 | private readonly int stringRepresentationHash;
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| 13 |
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[15974] | 14 | [Storable]
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| 15 | public string StringRepresentation { get; private set; }
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[15712] | 16 |
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| 17 | protected Symbol(string representation) {
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[15714] | 18 | StringRepresentation = representation;
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[15828] | 19 | stringRepresentationHash = representation.GetHashCode();
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[15712] | 20 | }
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| 21 |
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[15960] | 22 | protected Symbol(Symbol original, Cloner cloner) : base(original, cloner) {
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| 23 | StringRepresentation = original.StringRepresentation;
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| 24 | stringRepresentationHash = original.stringRepresentationHash;
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| 25 | }
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| 26 |
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[15963] | 27 | [StorableConstructor]
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| 28 | protected Symbol(bool deserializing) { }
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| 29 |
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[15712] | 30 | public override string ToString() {
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[15714] | 31 | return StringRepresentation;
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[15712] | 32 | }
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[15828] | 33 |
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| 34 | #region IEquatable
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| 35 | public static bool operator ==(Symbol s1, Symbol s2) {
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[15832] | 36 | if (ReferenceEquals(s1, s2)) return true;
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| 37 | if (ReferenceEquals(s1, null) || ReferenceEquals(s2, null)) return false;
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| 38 | return s1.Equals(s2);
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[15828] | 39 | }
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| 40 |
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| 41 | public static bool operator !=(Symbol s1, Symbol s2) {
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| 42 | return !(s1 == s2);
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| 43 | }
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| 44 |
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| 45 | public bool Equals(Symbol other) {
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[15832] | 46 | if (ReferenceEquals(other, null)) return false;
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| 47 | if (ReferenceEquals(other, this)) return true;
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| 48 | if (this.GetType() != other.GetType()) return false; // Otherwise, this needs to be reimplemented in derived classes.
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| 49 | return StringRepresentation == other.StringRepresentation;
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[15828] | 50 | }
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| 51 |
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| 52 | public override bool Equals(object obj) {
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[15832] | 53 | if (ReferenceEquals(obj, null)) return false;
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| 54 | if (ReferenceEquals(obj, this)) return true;
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| 55 | if (this.GetType() != obj.GetType()) return false;
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[15828] | 56 | return Equals((Symbol)obj);
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| 57 | }
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| 58 |
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| 59 | public override int GetHashCode() {
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| 60 | return stringRepresentationHash;
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| 61 | }
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| 62 | #endregion
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[15712] | 63 | }
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| 64 |
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[15960] | 65 | [StorableClass]
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[15712] | 66 | public class TerminalSymbol : Symbol {
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[15960] | 67 | public TerminalSymbol(string representation) : base(representation) { }
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| 68 | public TerminalSymbol(TerminalSymbol original, Cloner cloner) : base(original, cloner) { }
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[15812] | 69 |
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[15960] | 70 | public override IDeepCloneable Clone(Cloner cloner) {
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| 71 | return new TerminalSymbol(this, cloner);
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| 72 | }
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[15963] | 73 |
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| 74 | [StorableConstructor]
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| 75 | protected TerminalSymbol(bool deserializing) : base(deserializing) { }
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[15712] | 76 | }
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| 77 |
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[15960] | 78 | [StorableClass]
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[15832] | 79 | public class VariableTerminalSymbol : TerminalSymbol {
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| 80 | public VariableTerminalSymbol(string representation) : base(representation) { }
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[15960] | 81 | public VariableTerminalSymbol(VariableTerminalSymbol original, Cloner cloner) : base(original, cloner) { }
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| 82 |
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| 83 | public override IDeepCloneable Clone(Cloner cloner) {
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| 84 | return new VariableTerminalSymbol(this, cloner);
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| 85 | }
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[15963] | 86 |
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| 87 | [StorableConstructor]
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| 88 | protected VariableTerminalSymbol(bool deserializing) : base(deserializing) { }
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[15832] | 89 | }
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| 90 |
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[15960] | 91 | [StorableClass]
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[15712] | 92 | public class NonterminalSymbol : Symbol {
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[15834] | 93 | public NonterminalSymbol(string representation) : base(representation) { }
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[15960] | 94 | public NonterminalSymbol(NonterminalSymbol original, Cloner cloner) : base(original, cloner) { }
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| 95 |
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| 96 | public override IDeepCloneable Clone(Cloner cloner) {
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| 97 | return new NonterminalSymbol(this, cloner);
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| 98 | }
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[15963] | 99 |
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| 100 | [StorableConstructor]
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| 101 | protected NonterminalSymbol(bool deserializing) : base(deserializing) { }
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[15712] | 102 | }
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| 103 |
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[15960] | 104 | [StorableClass]
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[15975] | 105 | public class Production : DeepCloneable, IList<Symbol> {
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| 106 | [Storable]
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| 107 | private List<Symbol> symbols;
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[15712] | 108 |
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[15975] | 109 | public int Count { get { return symbols.Count; } }
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[15712] | 110 |
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[15981] | 111 | public bool IsReadOnly {
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| 112 | get { throw new NotImplementedException(); }
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| 113 | }
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[15712] | 114 |
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[15981] | 115 | public Symbol this[int index] {
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| 116 | get { throw new NotImplementedException(); }
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| 117 | set { throw new NotImplementedException(); }
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| 118 | }
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[15975] | 119 |
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| 120 | public Production(params Symbol[] symbols) {
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| 121 | this.symbols = symbols.ToList();
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| 122 | }
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| 123 |
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| 124 | public Production(IEnumerable<Symbol> symbols) {
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| 125 | this.symbols = symbols.ToList();
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| 126 | }
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| 127 |
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[15963] | 128 | [StorableConstructor]
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| 129 | protected Production(bool deserializing) { }
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| 130 |
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[15975] | 131 | protected Production(Production original, Cloner cloner) {
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| 132 | symbols = original.symbols.Select(cloner.Clone).ToList();
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[15960] | 133 | }
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| 134 |
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[15975] | 135 | public override IDeepCloneable Clone(Cloner cloner) {
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[15960] | 136 | return new Production(this, cloner);
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| 137 | }
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| 138 |
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[15712] | 139 | public override string ToString() {
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| 140 | return string.Join(" ", this);
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| 141 | }
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[15975] | 142 |
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| 143 | #region IList<Symbol> methods
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| 144 | public IEnumerator<Symbol> GetEnumerator() {
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| 145 | return symbols.GetEnumerator();
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| 146 | }
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| 147 |
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| 148 | IEnumerator IEnumerable.GetEnumerator() {
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| 149 | return GetEnumerator();
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| 150 | }
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| 151 |
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| 152 | public int IndexOf(Symbol item) {
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| 153 | return symbols.IndexOf(item);
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| 154 | }
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| 155 |
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| 156 | public void Insert(int index, Symbol item) {
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| 157 | symbols.Insert(index, item);
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| 158 | }
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| 159 |
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| 160 | public void RemoveAt(int index) {
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| 161 | symbols.RemoveAt(index);
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| 162 | }
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| 163 |
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| 164 | public void Add(Symbol item) {
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| 165 | symbols.Add(item);
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| 166 | }
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| 167 |
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| 168 | public void Clear() {
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| 169 | symbols.Clear();
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| 170 | }
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| 171 |
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| 172 | public bool Contains(Symbol item) {
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| 173 | return symbols.Contains(item);
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| 174 | }
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| 175 |
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| 176 | public void CopyTo(Symbol[] array, int arrayIndex) {
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| 177 | symbols.CopyTo(array, arrayIndex);
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| 178 | }
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| 179 |
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| 180 | public void CopyTo(int index, Symbol[] array, int arrayIndex, int count) {
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| 181 | symbols.CopyTo(index, array, arrayIndex, count);
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| 182 | }
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| 183 |
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| 184 | public bool Remove(Symbol item) {
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| 185 | return symbols.Remove(item);
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| 186 | }
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| 187 | #endregion
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[15712] | 188 | }
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| 189 | }
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