[3437] | 1 | #region License Information
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| 2 | /* HeuristicLab
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[5445] | 3 | * Copyright (C) 2002-2011 Heuristic and Evolutionary Algorithms Laboratory (HEAL)
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[3437] | 4 | *
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| 5 | * This file is part of HeuristicLab.
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| 6 | *
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| 7 | * HeuristicLab is free software: you can redistribute it and/or modify
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| 8 | * it under the terms of the GNU General Public License as published by
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| 9 | * the Free Software Foundation, either version 3 of the License, or
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| 10 | * (at your option) any later version.
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| 11 | *
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| 12 | * HeuristicLab is distributed in the hope that it will be useful,
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| 13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
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| 14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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| 15 | * GNU General Public License for more details.
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| 16 | *
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| 17 | * You should have received a copy of the GNU General Public License
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| 18 | * along with HeuristicLab. If not, see <http://www.gnu.org/licenses/>.
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| 19 | */
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| 20 | #endregion
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| 21 |
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| 22 | using System;
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| 23 | using System.Collections.Generic;
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| 24 | using System.Linq;
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| 25 |
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| 26 | namespace HeuristicLab.MainForm {
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| 27 | internal static class TypeExtension {
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| 28 | internal static bool IsAssignableTo(this Type type, Type other) {
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| 29 | if (other.IsAssignableFrom(type))
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| 30 | return true;
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| 31 |
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| 32 | if (RecursiveCheckGenericTypes(type, other))
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| 33 | return true;
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| 34 |
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| 35 | IEnumerable<Type> implementedInterfaces = type.GetInterfaces().Where(t => t.IsGenericType);
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| 36 | foreach (Type implementedInterface in implementedInterfaces) {
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| 37 | if (implementedInterface.CheckGenericTypes(other))
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| 38 | return true;
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| 39 | }
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| 40 |
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| 41 | return false;
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| 42 | }
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| 43 |
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| 44 | private static bool RecursiveCheckGenericTypes(Type type, Type other) {
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| 45 | if (type.CheckGenericTypes(other))
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| 46 | return true;
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| 47 |
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| 48 | if (type.BaseType == null)
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| 49 | return false;
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| 50 |
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| 51 | return RecursiveCheckGenericTypes(type.BaseType, other);
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| 52 | }
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| 53 |
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| 54 | internal static bool CheckGenericTypes(this Type type, Type other) {
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| 55 | if (!type.IsGenericType || !other.IsGenericType)
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| 56 | return false;
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| 57 |
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| 58 | if (type.GetGenericTypeDefinition() == other.GetGenericTypeDefinition())
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| 59 | return type.CheckGenericArguments(other);
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| 60 |
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| 61 | return false;
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| 62 | }
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| 63 |
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| 64 | private static bool CheckGenericArguments(this Type type, Type other) {
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| 65 | Type[] typeGenericArguments = type.GetGenericArguments();
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| 66 | Type[] otherGenericArguments = other.GetGenericArguments();
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| 67 |
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| 68 | if (typeGenericArguments.Length != otherGenericArguments.Length)
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| 69 | return false;
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| 70 |
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| 71 | for (int i = 0; i < typeGenericArguments.Length; i++) {
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| 72 | if (typeGenericArguments[i] != otherGenericArguments[i]
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| 73 | && !otherGenericArguments[i].IsGenericParameter)
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| 74 | return false;
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| 75 | }
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| 76 | return true;
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| 77 | }
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| 78 | }
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| 79 | }
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