[antlr-interest] convert an old ANTLR v2 grammar to ANTLR v3:-
faraz ahmed
passionist_81 at yahoo.co.uk
Wed Aug 6 17:36:44 PDT 2008
I'm struggling to convert an old ANTLR v2 grammar to ANTLR v3. I'm a newbie .ANTLR reports errors:-
could any body help me to fix those errors:-
ANTLR Parser Generator Version 3.1b1 (May 20, 2008) 1989-2008
error(100): ANTLRSyntax100.g:3:1: syntax error: antlr: ANTLRSyntax100.g:3:1: unexpected token:
import java.io.*;
import antlr.*;
import uk.ac.sheffield.dcs.dfa.*;
import uk.ac.sheffield.dcs.dfa.spec.*;
warning(149): ANTLRSyntax100.g:0:0: rewrite syntax or operator with no output option; setting output=AST
error(150): grammar file ANTLRSyntax100.g has no rules
error(100): ANTLRSyntax100.g:0:0: syntax error: assign.types: <AST>:0:0: unexpected end of subtree
error(100): ANTLRSyntax100.g:0:0: syntax error: define: <AST>:0:0: unexpected end of subtree
I can't understand what ANTLR doesn't like. The grammar is
attached. Any help appreciated!
faraz
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