问如何解析.as (AS3)文件

EN

package {
   class SomeClass extends AnotherClass {
      private var someVariable:Number

      public function someMethod(someParameter:Number = 4):void {
         var someLocalVariable:Number = someParameter * (2 + someVariable);
      }
   }
}

<package name="">
   <class id="783" name="SomeClass" extendsId="782">
      <variable id="784" visibility="private" type="Number"/>
      <function id="785" name="someMethod" returnType="void">
         <parameter id="786" name="someParameter" type="Number">
            <expression>
               <number value="4"/>
            </expression>
         </parameter>
         <variable id="787" name="someLocalVariable" type="Number"/>
         <code>
            <assign toId="787">
               <expression>
                  <variable id="786"/>
                  <operator type="*"/>
                  <expression>
                     <number value="2"/>
                     <operator type="+"/>
                     <variable id="786"/>
                  </expression>
               </expression>
            </assign>
         </code>
      </function>
   </class>
</package>