Re: nested inner classes and (this)

[Jamison Hope <jrh at theptrgroup dot com>]

On Oct 2, 2010, at 2:13 AM, Per Bothner wrote:

> On 10/01/2010 11:05 PM, Jamison Hope wrote:
> > Is there a way yet to refer to the outer class instance from within  
> > an
> > inner class (like
> > Java's "OuterClass.this" mechanism)? I see the website docs for the
> > (this) macro say
> > > A planned extension will allow an optional class specifier (needed  
> > > for
> > > nested clases).
> >
> > If I'm correctly interpreting thisRef.java and ThisExp.java, that  
> > hasn't
> > happened yet.
> > Are there any workarounds?
>
> You could do something like:
>
> (let ((outer-this (this)))
>   ... outer-this ...)

Thanks, that seems to work. I see that right now, thisRef just looks  
for the implicit 'this' argument from the enclosing method, which  
means you can't use it with the new automatic SAM conversion:
   (JButton text: "Click Me!"
            action-listener:
            (lambda (e) (format #t "This: ~A e: ~A~%" (this) e)))
fails to compile with the error "use of 'this' not in a named method".  
I'm not sure what to do about that (or even if it's worth doing  
anything about it).

But as far as extending it to accept a form "(this OuterClass)" -  
while the inner class is being compiled, does the Translator still  
have a reference to the outer class/method at all? Is it just stored  
in curMethodLambda (which gets overwritten in object.java), or is it  
also hidden in formStack or some other Translator instance variable?

Thanks,
Jamie

--
Jamison Hope
The PTR Group
www.theptrgroup.com