Free cookie consent management tool by TermsFeed Policy Generator

source: branches/HeuristicLab.Problems.Orienteering/HeuristicLab.MainForm/3.3/TypeExtension.cs @ 11185

Last change on this file since 11185 was 11185, checked in by pfleck, 10 years ago

#2208 merged trunk and updated version info

File size: 2.6 KB
Line 
1#region License Information
2/* HeuristicLab
3 * Copyright (C) 2002-2014 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.Generic;
24using System.Linq;
25
26namespace HeuristicLab.MainForm {
27  internal static class TypeExtension {
28    internal static bool IsAssignableTo(this Type type, Type other) {
29      if (other.IsAssignableFrom(type))
30        return true;
31
32      if (RecursiveCheckGenericTypes(type, other))
33        return true;
34
35      IEnumerable<Type> implementedInterfaces = type.GetInterfaces().Where(t => t.IsGenericType);
36      foreach (Type implementedInterface in implementedInterfaces) {
37        if (implementedInterface.CheckGenericTypes(other))
38          return true;
39      }
40
41      return false;
42    }
43
44    private static bool RecursiveCheckGenericTypes(Type type, Type other) {
45      if (type.CheckGenericTypes(other))
46        return true;
47
48      if (type.BaseType == null)
49        return false;
50
51      return RecursiveCheckGenericTypes(type.BaseType, other);
52    }
53
54    internal static bool CheckGenericTypes(this Type type, Type other) {
55      if (!type.IsGenericType || !other.IsGenericType)
56        return false;
57
58      if (type.GetGenericTypeDefinition() == other.GetGenericTypeDefinition())
59        return type.CheckGenericArguments(other);
60
61      return false;
62    }
63
64    private static bool CheckGenericArguments(this Type type, Type other) {
65      Type[] typeGenericArguments = type.GetGenericArguments();
66      Type[] otherGenericArguments = other.GetGenericArguments();
67
68      if (typeGenericArguments.Length != otherGenericArguments.Length)
69        return false;
70
71      for (int i = 0; i < typeGenericArguments.Length; i++) {
72        if (typeGenericArguments[i] != otherGenericArguments[i]
73          && !otherGenericArguments[i].IsGenericParameter)
74          return false;
75      }
76      return true;
77    }
78  }
79}
Note: See TracBrowser for help on using the repository browser.