42 lines
1.5 KiB
C#
42 lines
1.5 KiB
C#
using System;
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using System.Collections.Generic;
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using System.Linq;
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namespace ET
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{
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public static class GenericHelper
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{
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/// <summary>
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/// 判断指定的类型 <paramref name="type"/> 是否是指定泛型类型的子类型，或实现了指定泛型接口。
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/// </summary>
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/// <param name="type">需要测试的类型。</param>
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/// <param name="generic">泛型接口类型，传入 typeof(IXxx<>)</param>
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/// <returns>如果是泛型接口的子类型，则返回 true，否则返回 false。</returns>
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public static bool HasImplementedRawGeneric(this Type type,Type generic)
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{
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if (type == null) throw new ArgumentNullException(nameof(type));
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if (generic == null) throw new ArgumentNullException(nameof(generic));
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// 测试接口。
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bool isTheRawGenericType = type.GetInterfaces().Any(IsTheRawGenericType);
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if (isTheRawGenericType) return true;
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// 测试类型。
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while (type != null && type != typeof(object))
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{
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isTheRawGenericType = IsTheRawGenericType(type);
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if (isTheRawGenericType) return true;
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type = type.BaseType;
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}
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// 没有找到任何匹配的接口或类型。
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return false;
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// 测试某个类型是否是指定的原始接口。
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bool IsTheRawGenericType(Type test)
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=> generic == (test.IsGenericType ? test.GetGenericTypeDefinition() : test);
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}
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}
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}
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