[antlr-interest] How to print different messages for different failed predicates in rule

[Ramanand Mandayam]

Hi,

I have a rule that users three different semantic predicates for validation. 
But each of these will only raise the FailedPredicateException. 
What is the best way to use semantic predicates while still printing different
error messages based on the actual predicate that failed?

Cheers

Ramanand