C# IType.IsSubclassOf方法代码示例

 public virtual bool IsAssignableFrom(IType other)
 {
     ExternalType external = other as ExternalType;
     if (null == external)
     {
         if (EntityType.Null == other.EntityType)
         {
             return !IsValueType;
         }
         return other.IsSubclassOf(this);
     }
     if (other == _typeSystemServices.VoidType)
     {
         return false;
     }
     return _type.IsAssignableFrom(external._type);
 }

		public bool KnowsQuackFu(IType type)
		{
			return type.IsSubclassOf(IQuackFuType);
		}

		public bool IsAttribute(IType type)
		{
			return type.IsSubclassOf(SystemAttribute);
		}

		public virtual bool IsMacro(IType type)
		{
			return type.IsSubclassOf(IAstMacroType) || type.IsSubclassOf(IAstGeneratorMacroType);
		}

		public virtual bool IsAstNode(IType type)
		{
			return type == AstNodeType || type.IsSubclassOf(AstNodeType);
		}

 public bool IsScriptType(IType type)
 {
     return type.IsSubclassOf(this._ScriptBaseType);
 }

		public virtual bool IsAssignableFrom(IType other)
		{
			if (other == null)
				return false;

			if (other == this || other.IsSubclassOf(this) || (other.IsNull() && !IsValueType))
				return true;

			return false;
		}

		public virtual bool IsAssignableFrom(IType other)
		{
			var external = other as ExternalType;
			if (null == external)
			{
				if (EntityType.Null == other.EntityType)
				{
					return !IsValueType;
				}
				return other.IsSubclassOf(this);
			}
			if (other == _provider.Map(Types.Void))
			{
				return false;
			}
			return _type.IsAssignableFrom(external._type);
		}

		public virtual bool IsAssignableFrom(IType other)
		{
			if (other == null)
			{
				return false;
			}

			if (other == this || other.IsSubclassOf(this) || (other == Null.Default && !IsValueType))
			{
				return true;
			}

			return false;
		}

 public virtual bool IsAssignableFrom(IType other)
 {
     return this == other ||
             (!this.IsValueType && Null.Default == other) ||
             other.IsSubclassOf(this);
 }