Mine

hello,

there seems to be a problem when static properties are being accessed from
inside static methods of the same class, as the following example demonstrates.

the class BugDemo has a static property _objects:Object. tag:String is a local
variable containing an id for local obj:Object. if i try to set
BugDemo._objects[ tag ], it sets _objects.tag ( == _objects[ "tag" ]) instead:
  BugDemo._objects[ tag ] = obj; // sets _objects[ "tag" ]

if i write it like the following, it works as expected:
  (BugDemo._objects)[ tag ] = obj;

in the attached example, BugDemo has two static methods, "test" and "test2".
they are identical, except for the two lines setting and accessing a property
of BugDemo._objects. in "test" there are no brackets around it, in "test2"
there are.
yes, i know i could simply access it as _objects[ tag ], without the BugDemo in
front of it. if i do, it works as expected (i.e. no bug).

frame 1 contains a TextField, "output", and the following script:


<code>

  import BugDemo;

  var foo = {};
  var bar = {};

  BugDemo.test( foo );
  output.text += "-----\n";
  BugDemo.test2( bar );

</code>


it's output is:

  tag: undefined
  -----
  id1: object
  tag: object



BudDemo.as contains the following:

<code>

  class BugDemo {
       static private var _cntr:Number = 0;
       static private var _objects:Object = {};

       static public function test ( obj:Object ) {
               var tag:String = obj.tag;
               if( !tag.length ) {
                       tag = obj.tag = "id" + BugDemo._cntr++;
                       BugDemo._objects[ tag ] = obj;          // <-- behaves like "_objects.tag"
               }
               for( var i in BugDemo._objects )
                       _root.output.text += ( i + ": " + typeof BugDemo._objects[ i ] + "\n" );
       }

       static public function test2 ( obj:Object ) {
               var tag:String = obj.tag;
               if( !tag.length ) {
                       tag = obj.tag = "id" + BugDemo._cntr++;
                       (BugDemo._objects)[ tag ] = obj;        // <-- note the (...)
               }
               for( var i in BugDemo._objects )
                       _root.output.text += ( i + ": " + typeof (BugDemo._objects)[ i ] + "\n" );
       }
  }

</code>


decompiled with flasm:

in function test,
lines 93 - 98:
     push 'BugDemo'
     getVariable
     push '_objects'
     getMember
     push 'tag', r:obj // <-- 'tag' should be a reference to obj
     setMember

in function test2,
lines 167 - 172:
     push 'BugDemo'
     getVariable
     push '_objects'
     getMember
     push r:3, r:obj   // <-- that's correct
     setMember


the problem does not occur with the mtasc compiler.
i'm using Flash MX 2004, version 7.2.

hth,
mark