[F-Script-talk] Intercepting variable access

[Bryan W. <woo...@gm...>]

I'm using F-script  as the “underlying computation engine” for a 
application I’m working on. I've been able to make slight modifications 
to F-script’s behavior using Categories and poseAsClass: until now and I 
need some guidance.

I need to intercept F-script’s variable lookup mechanism to catch 
whenever my special “range syntax” is used. That is, whenever variable 
a1_a12 is referenced I need to catch the lookup and invoke special code 
(that returns an array of variables a1 -> a10) because a1_a10 doesn't 
actually exist and is being used as a shorthand for this kind of behavior.

I originally attempted to override -[FSinterpreter 
objectForIdentifier:found:] only to discover that the interpreter 
doesn't use that method internally. I then downloaded the source and 
found the existence of the SymbolTable class. Which brings me to my 
question:

What SymbolTable method(s) should I override to do what I’m trying to 
accomplish?

So far F-script’s integration with Cocoa/Objc has made making these kind 
of customizations a dream. I’m hoping that my luck continues.

Thanks,
Bryan