[antlr-interest] NullPointerException in antlr
SAGAR BIYANI
sagarbiyani at yahoo.com
Tue Feb 26 05:03:04 PST 2002
Hi ,
I am writing an grammar file for SQL commands.
I have extended the same grammar for some other
purpose. Now during
generating
the code for derived lexer and parser classes it is
throwing following
error.
#$%%*&@# internal error:
java.lang.NullPointerException
[complain to nearest government official
or send hate-mail to parrt at jguru.com;
please send stack trace with report.]
java.lang.NullPointerException
at java.util.Hashtable.get(Hashtable.java:320)
at
antlr.SimpleTokenManager.getTokenSymbol(SimpleTokenManager.java:84)
at
antlr.SimpleTokenManager.getTokenSymbolAt(SimpleTokenManager.java:89)
at
antlr.JavaCodeGenerator.getValueString(JavaCodeGenerator.java:3046)
at
antlr.JavaCodeGenerator.getRangeExpression(JavaCodeGenerator.java:3032)
at
antlr.JavaCodeGenerator.getLookaheadTestTerm(JavaCodeGenerator.java:2991)
at
antlr.JavaCodeGenerator.getLookaheadTestExpression(JavaCodeGenerator.java:29
47)
at
antlr.JavaCodeGenerator.getLookaheadTestExpression(JavaCodeGenerator.java:29
73)
at
antlr.JavaCodeGenerator.genCommonBlock(JavaCodeGenerator.java:1644)
at
antlr.JavaCodeGenerator.gen(JavaCodeGenerator.java:533)
at
antlr.OneOrMoreBlock.generate(OneOrMoreBlock.java:21)
at
antlr.JavaCodeGenerator.genAlt(JavaCodeGenerator.java:1190)
at
antlr.JavaCodeGenerator.genRule(JavaCodeGenerator.java:2503)
at
antlr.JavaCodeGenerator.gen(JavaCodeGenerator.java:693)
at
antlr.ParserGrammar.generate(ParserGrammar.java:28)
at
antlr.JavaCodeGenerator.gen(JavaCodeGenerator.java:111)
at antlr.Tool.doEverything(Tool.java:254)
at antlr.Tool.main(Tool.java:390)
Is is a bug ? Any help on this will be greatly
appreciated.
Thanks,
Sagar
__________________________________________________
Do You Yahoo!?
Yahoo! Sports - Coverage of the 2002 Olympic Games
http://sports.yahoo.com
Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/
More information about the antlr-interest
mailing list