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source: branches/2522_RefactorPluginInfrastructure/HeuristicLab.Persistence/3.3/Default/CompositeSerializers/ConcreteDictionarySerializer.cs

Last change on this file was 15973, checked in by gkronber, 6 years ago

#2522: merged trunk changes from r13402:15972 to branch resolving conflicts where necessary

File size: 3.2 KB
RevLine 
[3742]1#region License Information
2/* HeuristicLab
[15973]3 * Copyright (C) 2002-2018 Heuristic and Evolutionary Algorithms Laboratory (HEAL)
[3742]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;
[1454]23using System.Collections;
[4068]24using System.Collections.Generic;
[5290]25using System.Linq;
[1454]26using HeuristicLab.Persistence.Core;
[4068]27using HeuristicLab.Persistence.Default.CompositeSerializers.Storable;
[1454]28using HeuristicLab.Persistence.Interfaces;
29
[1823]30namespace HeuristicLab.Persistence.Default.CompositeSerializers {
[1566]31
[3017]32  [StorableClass]
[5290]33  internal sealed class ConcreteDictionarySerializer : ICompositeSerializer {
[1454]34
[4806]35    [StorableConstructor]
[5290]36    private ConcreteDictionarySerializer(bool deserializing) { }
37    public ConcreteDictionarySerializer() { }
[4806]38
[1539]39    public int Priority {
[5425]40      get { return 150; }
[1539]41    }
42
43
[1823]44    public bool CanSerialize(Type type) {
[5290]45      return type.IsGenericType && type.GetGenericTypeDefinition() == typeof(Dictionary<,>);
[1454]46    }
47
[2993]48    public string JustifyRejection(Type type) {
[5290]49      return "Type is not a generic Dictionary<>";
[2993]50    }
51
[1553]52    public IEnumerable<Tag> CreateMetaInfo(object o) {
[5290]53      yield return new Tag("Comparer", o.GetType().GetProperty("Comparer").GetValue(o, null));
[1553]54    }
55
[1542]56    public IEnumerable<Tag> Decompose(object o) {
[1566]57      IDictionary dict = (IDictionary)o;
58      foreach (DictionaryEntry entry in dict) {
[1454]59        yield return new Tag("key", entry.Key);
60        yield return new Tag("value", entry.Value);
61      }
62    }
63
[1553]64    public object CreateInstance(Type t, IEnumerable<Tag> metaInfo) {
[5290]65      return Activator.CreateInstance(t, metaInfo.First().Value);
[1454]66    }
67
[1553]68    public void Populate(object instance, IEnumerable<Tag> o, Type t) {
[1454]69      IDictionary dict = (IDictionary)instance;
70      IEnumerator<Tag> iter = o.GetEnumerator();
[1625]71      try {
72        while (iter.MoveNext()) {
73          Tag key = iter.Current;
74          iter.MoveNext();
75          Tag value = iter.Current;
76          dict.Add(key.Value, value.Value);
77        }
[5290]78      } catch (InvalidOperationException e) {
[1625]79        throw new PersistenceException("Dictionaries must contain an even number of elements (key+value).", e);
[5290]80      } catch (NotSupportedException e) {
[1625]81        throw new PersistenceException("The serialized dictionary type was read-only or had a fixed size and cannot be deserialized.", e);
[5290]82      } catch (ArgumentNullException e) {
[1625]83        throw new PersistenceException("Dictionary key was null.", e);
[5290]84      } catch (ArgumentException e) {
[1625]85        throw new PersistenceException("Duplicate dictionary key.", e);
[1705]86      }
[1454]87    }
88  }
89
90}
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