Subj : Re: Pairs of 32-bit pointers
To   : netscape.public.mozilla.jseng
From : "Sterling Bates" <sblist*nospam*serv@bigbangco.com>
Date : Sat Dec 06 2003 09:58 pm

> > stores two pointers for every object method: one to the code, and one
> >to "this" or "self".  By permitting a method pointer as a callback,
> >developers could point directly to the object instance that expects the
call
> >instead of a call wrapper.  The private slot is not always available, or
> >sometimes just not a good idea, for this.
>
> It's not relevant.

I just clued in to what you meant here :)  What I meant to say, without
making any apparent effort to say it <g>, was in reference to storing an
external object reference in the private slot, so that a callback procedure
would know where to pass a given property operation.  This is tied to the
double pointer for variables.  Both JSString and jsdouble could leave the
private slot alone, putting the entire pointer to the value in the second 32
bits.  Then an outside developer can drop an object instance into the
private slot.

Thanks,

Sterling

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