Subj : Re: Getting function name with generic function call hook
To   : netscape.public.mozilla.jseng
From : "Sterling Bates" <sterlingb@bigbangmapsonco.com>
Date : Tue Oct 28 2003 11:43 am


"Brendan Eich" <brendan@meer.net> wrote in message
news:bnm8u8$mi4@ripley.netscape.com...
> It's not a function object, so JS_GetPrivate will return something other
> than a JSFunction*.  If you build the engine with DEBUG defined, it will
> assert if the CBridgeMethod class lacks the JSCLASS_HAS_PRIVATE flag.
> If that class has private data per object, though, it won't be of the
> type (JSFunction) you want.
>
> Why did you expect the callee (argv[-2]) to be a function object?  In
> what code is this pascal you've been showing run?

After some searching I think I'm clueing in on what the private attribute
is.  If I understand it right, instead of setting a property (say "__addr")
of a JSObject pointing to a memory address, I could simply
JS_SetPrivate(cx,obj,Pointer(self)), and whenever I see a JSObject*, I can
use JS_GetPrivate to retrieve a pointer to the Delphi class instance.

That would also be why JS_GetPrivate returns nil for my generic method call
hook -- it isn't set :-)  Would it make sense to, for each "method" JSClass
instance, JS_SetPrivate a pointer to the native method that it refers to?
(Hope that made sense.)

Thanks,

Sterling

.