[antlr-interest] Can someone please explain
Silvain Piree
s.piree at enneya.com
Thu Jun 20 23:51:03 PDT 2002
Hi,
I'm getting nondeterminism warnings on my grammar but
I don't understand why.
Following rule does not cause a problem when using k=5:
rule: A B C D E | A B C D F ;
But, when I make the B optional then I get a nondeterminism
warning regardless of lookahead 'k':
rule: A (B)? C D E | A (B)? C D F ;
Any suggestions would be much appreciated,
Silvain
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