source: stable/HeuristicLab.Parameters/3.3/ValueParameter.cs @ 17097

Last change on this file since 17097 was 17097, checked in by mkommend, 3 months ago

#2520: Merged 16565 - 16579 into stable.

File size: 3.2 KB
Line 
1#region License Information
2/* HeuristicLab
3 * Copyright (C) 2002-2019 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;
23using System.Reflection;
24using HeuristicLab.Common;
25using HeuristicLab.Core;
26using HEAL.Attic;
27
28namespace HeuristicLab.Parameters {
29  /// <summary>
30  /// A parameter whose value is defined in the parameter itself.
31  /// </summary>
32  [Item("ValueParameter", "A parameter whose value is defined in the parameter itself.")]
33  [StorableType("CB9B83B6-DE2B-45CC-AB0B-C551E1A6E0BD")]
34  public class ValueParameter<T> : OptionalValueParameter<T> where T : class, IItem {
35    public override T Value {
36      get { return base.Value; }
37      set {
38        if ((value == null) && (Value != null)) throw new ArgumentNullException();
39        base.Value = value;
40      }
41    }
42
43    [StorableConstructor]
44    protected ValueParameter(StorableConstructorFlag _) : base(_) { }
45    protected ValueParameter(ValueParameter<T> original, Cloner cloner) : base(original, cloner) { }
46
47    public ValueParameter() : base() { }
48    public ValueParameter(string name) : base(name) { base.Value = CreateDefaultValue(); }
49    public ValueParameter(string name, bool getsCollected) : base(name, getsCollected) { base.Value = CreateDefaultValue(); }
50    public ValueParameter(string name, T value) : base(name, value) { }
51    public ValueParameter(string name, T value, bool getsCollected) : base(name, value, getsCollected) { }
52    public ValueParameter(string name, string description) : base(name, description) { base.Value = CreateDefaultValue(); }
53    public ValueParameter(string name, string description, bool getsCollected) : base(name, description, getsCollected) { base.Value = CreateDefaultValue(); }
54    public ValueParameter(string name, string description, T value) : base(name, description, value) { }
55    public ValueParameter(string name, string description, T value, bool getsCollected) : base(name, description, value, getsCollected) { }
56                                                                                 
57    protected T CreateDefaultValue() {
58      Type type = typeof(T);
59      if (type.IsAbstract) return null;
60      ConstructorInfo defaultConstructor = type.GetConstructor(Type.EmptyTypes);
61      if (defaultConstructor == null) return null;
62
63      return (T)defaultConstructor.Invoke(new object[0]);
64    }
65
66    public override IDeepCloneable Clone(Cloner cloner) {
67      return new ValueParameter<T>(this, cloner);
68    }
69  }
70}
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