[antlr-interest] Problem when parsing numerics
Thomas Woelfle
thomas.woelfle at interactive-objects.com
Tue Feb 17 05:38:25 PST 2009
Hi,
I've been running into a strange problem using ANTLR 3.1.1. I don't know
wether it is a bug in my grammar or a bug in ANTLR.
In the language that has to be parsed following lines are legal strings:
1.
1.5.
There is a rule where a numeric is followed by a dot.
The problem with my grammar can be reduced to following sample grammar:
grammar test;
options {language=Java;}
foo : NUMERIC '.';
NUMERIC : '0'..'9'+ ('.' '0'..'9'+)?;
When using this grammar the string '1.5.' can be parsed successfully but
parsing the string '1.' fails with a MismatchedTokenException. Has
anybody an idea what is going wrong with my grammar?
Any help appreciated.
Regards,
Thomas
--
Interactive Objects Software GmbH
Basler Strasse 61
79100 Freiburg, Germany
Phone: +49 761 400 73 0
mailto:thomas.woelfle at interactive-objects.com
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