[antlr-interest] Error reporting in mismatchset

[Heiko Folkerts]

Hi,
I have to following piece of grammar from wich I want to create a helpful errormessage:
Statecheck: OBJECT COMPERATOR statearg SEMI;
Statearg: PARAMREF | STATE;

Now if I give the input 
Motor =; 
Where Motor is recognized as OBJECT and = recognized as COMPERATOR I get an mismatched set exception. That's right, since a statearg is expected. 

Since this is a tree parser I get an unexpected node exception which is meaningless to our users. In the resulting exception neither the expecting nor the expecting set fields are set so I cannot create a helpful errormessage from it. I'd like to change the behaviour so that I can generate more helpful errormessages for this and other similar cases. 

I tried to specify a manual exception handler as explained in the ANTLR reference but the code isn't reached because recoverFromMismatchedToken catches and handles the error allready.

So what should I override to make things work and do it the right way?

Thx

Mit freundlichem Gruß
Heiko Folkerts
Systementwicklung und -design
--
______________________________________________
DAVID GmbH · Wendenring 1 · 38114 Braunschweig
Tel.: +49 531 24379-14
Fax.: +49 531 24379-79
E-Mail: mailto:Heiko.Folkerts at david-bs.de
WWW:   http://www.david-bs.de 
Eintragung: Amtsgericht Braunschweig, HRB 3167
Geschäftsführer: Frank Ptok
______________________________________________