Subj : Re: using  js_HashString in a getter callback
To   : netscape.public.mozilla.jseng
From : Sterling Bates
Date : Tue May 25 2004 11:28 am

Brann Joly wrote:

>>Don't you mean JS_SetReservedSlot, not JS_SetPrivate, here?
> 
> I meant JS_SetPrivate, but of course I may be wrong. What I want is to
> attach some data to a function object, so I can get it back when my callback
> is called by SM. Since I use JS_SetPrivate to attach private data to
> objects, i thought it was a good idea to use it for functions too. What's
> the difference between the 2 functions? I can't find JS_SetReservedSlot in
> the apidoc

In JSClass.reserveSlots you can set up to 255 reserved slots.  While 
there are other reserved slots for the engine internals, you can 
reference the slots from 0..n-1.

Here's the signature for JS_SetReservedSlot:

JSBool JS_SetReservedSlot(JSContext *cx, JSObject *obj, uint32 index, 
jsval v);

And the signature for JS_GetReservedSlot:

JSBool JS_GetReservedSlot(JSContext *cx, JSObject *obj, uint32 index, 
jsval *vp);

Sterling

.