[antlr-interest] Getting token source within tree walker?

[Cameron Esfahani]

I'm doing some input validation and error checking in my parser.  I'd  
like to move it to my tree walker, but I'm having some trouble: If I  
get an error, in addition to printing out the line number, I need to  
print out the input file name as well.

 From the parser, I can access the input stream associated with a  
token, and get the file name from there.

Is it possible to do something similar with the tree elements we have  
in a tree walker?

Cameron Esfahani
dirty at apple.com

"In the elder days of Art, Builders wrought with greatest care each  
minute and unseen part; For the gods see everywhere."

"The Builders", H. W. Longfellow



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