[antlr-interest] handshake problems

[David Smith]

I think I might have graduated from Kindergarten to Big Boy 
questions.  Something annoying keeps happening within my Java 
code.  It runs fine, then a butterfly flaps its wings somewhere, and 
none of my code runs.  It stops in the middle of my (gr)Parser.java 
at this code:

         setTokenStream(new DebugTokenStream(input,proxy));
         try {
             proxy.handshake();
         }

It seems to disappear into compiled code in the handshake never to 
reappear.  I have no idea what happened to cause this to fail and 
therefore no idea how to fix it.  So I take a couple of Aspirin, take 
the night off and maybe in the morning it will work again.

Two questions:

1. Why are we shaking hands with something else when all I want to do 
is parse a file?

2. Do we know some settings somewhere that make this lightning strike 
less likely?

DMS

David M. Smith http://www.cc.gatech.edu/fac/David.Smith
Georgia Institute of Technology, College of Computing
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