java CUP contradiction

Hello! I'm in a dilly of a pickle here and can't seem to get any
answers on the web. My problem is one of EOF token recognition with
CUP.


When I define EOF as one of my terminals, CUP complains:


Duplicate terminal (EOF) created


So, I take it out, and CUP complains:


Error at 86(24): java_cup.runtime.Symbol "EOF" has not been declared


So what's this all about? Everything else works just fine if I remove
all references to that evil and allusive EOF symbol. The parse works
its way through, but then craps out due to a null pointer exception at
the end of file.


I am using JLex with the %cup compatibility flag and have the standard:


%eofval{
return new Symbol(sym.EOF);
%eofval}


in my lex file.


Can anyone offer any suggestions on how to proceed? Or point me in the
direction of someone or someplace that could give me a few suggestions?


Thank you,
Scott Briening
brienin2@tcnj.edu

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