AS3检查类是否扩展了另一个类

Question

在AS3中,我试图检查一个对象是一个实例,还是扩展一个特定的类.if (object is ClassName)如果对象是实例,则使用类似的工作,ClassName但如果它是扩展 的类的实例则不使用ClassName.

伪代码示例:

class Foo {}
class Bar extends Foo {}

var object = new Bar();

if (object is Foo){ /* not executed */ }
if (object is Foo){ /* is executed */ }

我想要的东西:

class Foo {}
class Bar extends Foo {}

var object = new Bar();

if (object is Foo){ /* is executed */ }

任何人的想法？

Answer 1

package {
 import flash.display.Sprite;



public class Main extends Sprite {
  public function Main() {
   var bar:Bar=new Bar();
   trace("bar is Bar",bar is Bar);//true
   trace("bar is Foo:",bar is Foo);//true
   trace("bar is IKingKong:",bar is IKingKong);//true
   trace(describeType(bar));
   //<type name="Main.as$0::Bar" base="Main.as$0::Foo" isDynamic="false" isFinal="false" isStatic="false">
   //<extendsClass type="Main.as$0::Foo"/>
   //<extendsClass type="Object"/>
   //<implementsInterface type="Main.as$0::IKingKong"/>
   //</type>
  }
 }
}
interface IKingKong{}
class Foo implements IKingKong{}
class Bar extends Foo{}