Re: Tracing Function Invocations

Hi John,

Based on the Firebug code, it looks like I need to hook the function
invocations, and when a function is called, hook execution (interrupts). I
can then get all the info I need in the interrupt, and unhook interrupts
until the next function call. I had hoped that there was a better way, but
it seems to work. Thanks for your help!

Regards,

Daniel



On Mon, Feb 18, 2008 at 9:35 PM, John J. Barton <[email protected]>
wrote:

> Daniel Gredler wrote:
> > Hi guys,
> >
> > I'm trying to use the jsdIDebuggerService interface in a Firefox
> extension
> > to trace function invocations. Specifically, I'm using the debugger
> > service's functionHook. This hook takes two arguments: the current frame
> and
> > the invocation type.
> >
> > However, I'm having trouble accessing the name of the function being
> > invoked, as well as the names and values of the arguments being passed
> to
> > the function. The problem is that frame.functionName and
> > frame.script.functionObject refer to the function within which the
> > invocation is made, not the function being invoked.
> >
> > Has anyone used the functionHook to trace and/or log JavaScript function
> > calls? If not, has anyone used a different method to do achieve this?
> I'm
> > attaching a snippet of code below so as to give a better idea of what
> I'm
> > doing (wrong).
> >
> You can look at firebug-service.js in
>
> http://code.google.com/p/fbug/source/browse/branches/firebug1.2/components/firebug-service.js
> to see how step-in, step-out etc are implemented.
>
> John.
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>



-- 
Daniel Gredler
http://daniel.gredler.net/