Subj : Re: Getting function name with generic function call hook
To   : Sterling Bates <sblistserv@bigbangco.com>
From : Brendan Eich <brendan@meer.net>
Date : Mon Oct 27 2003 07:05 pm

Sterling Bates wrote:

>No progress on JS_GetFunctionId -- it still requires a non-null JSFunction*,
>and I'm working my way around the null problem.
>
>    funobj := PJSObject(argv^ and (not JSVAL_TAGMASK));
>  
>

Since JSVAL_OBJECT is 0, you could cheat and just use argv^ here -- try 
that, in case there's something wrong with and or not.

>    fun := PJSFunction(JS_GetPrivate(cx,funobj));
>  
>

Can you verify via toString that funobj is a function object, in 
particular the one you expect?

>I'm guessing from jsapi.h that JSVAL_TAGMASK equals $1 and $2 and $4 (since
>JSVAL_TAGBITS is 3).
>  
>

($1 or $2 or $4), aka $7, yeah.

>If that's correct, still no dice.  Is there a certain spidermonkey roadmap I
>should follow to debug?  Keep in mind I can't precisely follow the C code
>from Delphi, but I can trace through the CPU and get a rough idea of what's
>happening.
>  
>

I was assuming you knew C enough to follow the engine code -- sorry if 
not, and it's amazing you've put this bridge together!

/be

.