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source: stable/HeuristicLab.Persistence/3.3/Default/CompositeSerializers/StackSerializer.cs @ 17388

Last change on this file since 17388 was 17181, checked in by swagner, 5 years ago

#2875: Merged r17180 from trunk to stable

File size: 2.7 KB
Line 
1#region License Information
2/* HeuristicLab
3 * Copyright (C) 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.Collections;
24using System.Collections.Generic;
25using System.Reflection;
26using HeuristicLab.Persistence.Core;
27using HEAL.Attic;
28using HeuristicLab.Persistence.Interfaces;
29
30namespace HeuristicLab.Persistence.Default.CompositeSerializers {
31
32  [StorableType("0EFD0631-C3A9-4233-B5B2-06103C908D78")]
33  internal sealed class StackSerializer : ICompositeSerializer {
34
35    [StorableConstructor]
36    private StackSerializer(StorableConstructorFlag _) { }
37    public StackSerializer() { }
38
39    public int Priority {
40      get { return 100; }
41    }
42
43
44    public bool CanSerialize(Type type) {
45      return type == typeof(Stack) ||
46        type.IsGenericType &&
47        type.GetGenericTypeDefinition() == typeof(Stack<>);
48    }
49
50    public string JustifyRejection(Type type) {
51      return "not Stack or generic Stack<>";
52    }
53
54    public IEnumerable<Tag> CreateMetaInfo(object o) {
55      return new Tag[] { };
56    }
57
58    public IEnumerable<Tag> Decompose(object obj) {
59      MethodInfo addMethod = obj.GetType().GetMethod("Push");
60      object reverseStack = Activator.CreateInstance(obj.GetType(), true);
61      foreach (object o in (IEnumerable)obj) {
62        addMethod.Invoke(reverseStack, new[] { o });
63      }
64      foreach (object o in (IEnumerable)reverseStack) {
65        yield return new Tag(null, o);
66      }
67    }
68
69    public object CreateInstance(Type type, IEnumerable<Tag> metaInfo) {
70      return Activator.CreateInstance(type, true);
71    }
72
73    public void Populate(object instance, IEnumerable<Tag> tags, Type type) {
74      MethodInfo addMethod = type.GetMethod("Push");
75      try {
76        foreach (var tag in tags)
77          addMethod.Invoke(instance, new[] { tag.Value });
78      }
79      catch (Exception e) {
80        throw new PersistenceException("Exception caught while trying to populate enumerable.", e);
81      }
82    }
83  }
84}
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