[antlr-interest] problem in this grammer file:-

[faraz ahmed]

Hi i am new to antlr .i have to use this grammer file produced by
somebody else . i am trying to run it.can somebody plz check those
errors in this grammer.

the errors it is giving are 

ANTLR Parser Generator  Version 3.1b1 (May 20, 2008)  1989-2008

error(100): Dfa.g:4:1: syntax error: antlr: Dfa.g:4:1: unexpected token: 

  import java.io.*;

  import antlr.*;

  import uk.ac.sheffield.dcs.dfa.*;

  import uk.ac.sheffield.dcs.dfa.spec.*;



warning(149): Dfa.g:0:0: rewrite syntax or operator with no output option; setting output=AST

error(150):  grammar file Dfa.g has no rules

error(100): Dfa.g:0:0: syntax error: assign.types: <AST>:0:0: unexpected end of subtree

error(100): Dfa.g:0:0: syntax error: define: <AST>:0:0: unexpected end of subtree

grammer file is attached with this e-mail.

thanking you,

faraz







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