There are always L0 rules, although sometimes they are implicit. For example (again, off the top of my head and untested), your fix might have been
digit ::= '0' | '1' Which is just syntactic sugar for a G1 rules and two L0 rules. While you are getting used to Marpa, it may be better to write the L0 rules out explicitly. By the way, if you've ever used a parser generator like yacc or bison, Marpa's G1/L0 distinction is exactly yacc/bison's grammar vs. lexer distinction. On Fri, Mar 13, 2015 at 9:40 PM, <suslov...@gmail.com> wrote: > >> > Thank you, Jeffrey! > > I thought it is normal case (a less or more) when no L0 rules at all for > small grammars. > > > -- > You received this message because you are subscribed to the Google Groups > "marpa parser" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to marpa-parser+unsubscr...@googlegroups.com. > For more options, visit https://groups.google.com/d/optout. > -- You received this message because you are subscribed to the Google Groups "marpa parser" group. To unsubscribe from this group and stop receiving emails from it, send an email to marpa-parser+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
