Connected.Framework/Connected.Interop/Generics.cs

namespace Connected.Interop
{
	public static class Generics
	{
		public static bool IsSubclassOfGenericType(this Type type, Type genericType)
		{
			var current = type.BaseType;

			while (current is not null && current != typeof(object))
			{
				var currentType = current.IsGenericType ? current.GetGenericTypeDefinition() : current;

				if (genericType == currentType)
					return true;

				current = current.BaseType;
			}

			return false;
		}

		public static bool ImplementsInterface(this Type type, Type interfaceType)
		{
			var interfaces = type.GetInterfaces();

			foreach (var i in interfaces)
			{
				if (!i.IsGenericType)
				{
					if (i == interfaceType)
						return true;

					continue;
				}

				var definition = i.GetGenericTypeDefinition();

				if (definition == interfaceType)
					return true;
			}

			return false;
		}

		public static bool ImplementsInterface<TInterface>(this Type type)
		{
			return ImplementsInterface(type, typeof(TInterface));
		}
	}
}