@Ruslan: Thanks for the follow-up! On Thu, Nov 19, 2015 at 11:24 AM, Ruslan Shvedov <[email protected]> wrote:
> [a-zA-Z0-9_]+ is a quantified rule RHS and it just needs its own LHS as > you did above with identifier_extend, otherwise it is a SLIF DSL syntax > error. > > As the doc says: > > The right side declaration of a rule will often contain one or more RHS >> alternatives. A RHS alternative is a series of RHS primaries, where a RHS >> primary may be a symbol name, a character class, or a single-quoted string. > > > https://metacpan.org/pod/distribution/Marpa-R2/pod/Scanless/DSL.pod#RHS-alternatives > > Note that RHS primary can't be a quantified character class -- there are > quantified rules for that -- > https://metacpan.org/pod/distribution/Marpa-R2/pod/Scanless/DSL.pod#Quantified-rule > > > > On Thu, Nov 19, 2015 at 11:07 AM, <[email protected]> wrote: > >> I am new to Marpa and I hope I can ask some newbie questions here. >> >> I very often get the error "No lexeme found" and I would like to >> understand it. >> >> The following grammar part works fine: >> >> limited_identifier ~ [a-zA-Z_] identifier_extend >> identifier_extend ~ [a-zA-Z0-9_]+ >> >> >> But this one throws the error: >> >> limited_identifier ~ [a-zA-Z_] [a-zA-Z0-9_]+ >> >> >> For me there is no difference. But there seems to be a difference for >> Marpa. >> >> What is the difference? >> >> -- >> 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 [email protected]. >> 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 [email protected]. > 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 [email protected]. For more options, visit https://groups.google.com/d/optout.
