[antlr-interest] retrieving the length of a production match

[Adrian Herscu]

Hi all,

I want to embed my parser in an IDE. One of the required features is to 
provide error markers. The markers framework API requires the length of 
the error besides of the line and column.

I have looked into the AST API and couldn't find nothing to help with 
this task... Searched the group and google, but still nothing :-(

Please help,
Adrian.