Subj : Re: Rhino equivalent of JSNewEnumerateOp
To   : Larry Blair <lmb@docent.com>
From : Igor Bukanov <igor@fastmail.fm>
Date : Mon Apr 14 2003 08:10 pm

Larry Blair wrote:
> Igor Bukanov wrote:
> 
>> Larry Blair wrote:
>>
>>> We're porting our JavaScript app from spidermonkey to rhino.  Today's 
>>> new discovery is that in order to make 'for(p in o)' work, an 
>>> enumeration method was coded in.  I've searched all over and I can't 
>>> find the rhino equivalent.  How do I do this in rhino?
>>>
>>
>> See Scriptable.getIds() which your application should subclass to 
>> provide list of properties of 'o' visible in for (in).
> 
> 
> Thanks for the response, Igor.  My problem is that the JSNewEnumerateOp 
> stuff allows spidermonkey to transparently perform 'for(p in o)'.  As 
> far as I can tell, to use Scriptable.getIds() I would have to root out 
> everywhere 'for(p in o)' was used in 1900 application files and change 
> it to call getIds() and loop through the resulting array.  What I was 
> hoping for was a way to make rhino treat 'for(p in o)' the way it can be 
> treated in spidermonkey.

Rhino always implements "for (p in o)" by calling getIds on o and all 
members of its prototype chain internally.

Regards, Igor

.