source: branches/GP.Grammar.Editor/HeuristicLab.Encodings.SymbolicExpressionTreeEncoding/3.4/Symbols/GroupSymbol.cs @ 6409

Last change on this file since 6409 was 6409, checked in by mkommend, 8 years ago

#1479: Updated grammar editor and changed related classes.

File size: 2.8 KB
Line 
1#region License Information
2/* HeuristicLab
3 * Copyright (C) 2002-2011 Heuristic and Evolutionary Algorithms Laboratory (HEAL)
4 *
5 * This file is part of HeuristicLab.
6 *
7 * HeuristicLab is free software: you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation, either version 3 of the License, or
10 * (at your option) any later version.
11 *
12 * HeuristicLab is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
15 * GNU General Public License for more details.
16 *
17 * You should have received a copy of the GNU General Public License
18 * along with HeuristicLab. If not, see <http://www.gnu.org/licenses/>.
19 */
20#endregion
21
22using System.Collections.Generic;
23using System.Linq;
24using HeuristicLab.Collections;
25using HeuristicLab.Common;
26using HeuristicLab.Persistence.Default.CompositeSerializers.Storable;
27
28namespace HeuristicLab.Encodings.SymbolicExpressionTreeEncoding {
29  [StorableClass]
30  public sealed class GroupSymbol : Symbol {
31    private const int minimumArity = 0;
32    private const int maximumArity = 0;
33
34    public override int MinimumArity {
35      get { return minimumArity; }
36    }
37    public override int MaximumArity {
38      get { return maximumArity; }
39    }
40
41    private ObservableSet<ISymbol> symbols;
42    public IObservableSet<ISymbol> SymbolsCollection {
43      get { return symbols; }
44    }
45    [Storable]
46    public IEnumerable<ISymbol> Symbols {
47      get { return symbols; }
48      private set { symbols = new ObservableSet<ISymbol>(value); }
49    }
50
51    public override bool Enabled {
52      get { return base.Enabled; }
53      set {
54        if (value != Enabled) {
55          base.Enabled = value;
56          foreach (ISymbol symbol in symbols)
57            symbol.Enabled = value;
58        }
59      }
60    }
61
62    [StorableConstructor]
63    private GroupSymbol(bool deserializing) : base(deserializing) { }
64    private GroupSymbol(GroupSymbol original, Cloner cloner)
65      : base(original, cloner) {
66      symbols = new ObservableSet<ISymbol>(original.Symbols.Select(s => cloner.Clone(s)));
67    }
68    public override IDeepCloneable Clone(Cloner cloner) {
69      return new GroupSymbol(this, cloner);
70    }
71
72    public GroupSymbol() : this("Group Symbol", Enumerable.Empty<ISymbol>()) { }
73    public GroupSymbol(string name, IEnumerable<ISymbol> symbols)
74      : base(name, "A symbol which groups other symbols") {
75      this.symbols = new ObservableSet<ISymbol>(symbols);
76      InitialFrequency = 0.0;
77    }
78
79    public override IEnumerable<ISymbol> Flatten() {
80      return base.Flatten().Union(symbols.SelectMany(s => s.Flatten()));
81    }
82  }
83}
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