Hi nido203,

I'm using perl5.

Grammar::BNF is a module for Perl 6 (see modules.perl6.org) which won't work under Perl 5.

A quick search of CPAN (= Perl 5 modules) doesn't seem to show me any modules which directly support BNF (Update: choroba showed how to use a form of BNF with Marpa::R2 here), modules for ABNF and EBNF appear to be available though. May I ask why you need to convert to BNF instead of just continuing to use Parse::RecDescent?

Should i have perl6?

Perl 6 is strongly related to, but not directly compatible with, Perl 5. So whether you want to switch to Perl 6 depends on several factors, like if you have the time to spend learning it, whether this script is intended for production use (as Perl 6 is not yet as widespread and stable as Perl 5), whether you already have a Perl 5 codebase, etc.

Maybe if you could describe the bigger picture of what you're trying to do, that would allow us to give some better advice.

Regards,
-- Hauke D

In reply to Re^3: converting context free grammar to BNF by haukex
in thread converting context free grammar to BNF by nido203

Title:
Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
to format your post, it's "PerlMonks-approved HTML":


  • Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!
  • Titles consisting of a single word are discouraged, and in most cases are disallowed outright.
  • Read Where should I post X? if you're not absolutely sure you're posting in the right place.
  • Please read these before you post! —
  • Posts may use any of the Perl Monks Approved HTML tags:
    a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, details, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, summary, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
  • You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)
            For:     Use:
    & &amp;
    < &lt;
    > &gt;
    [ &#91;
    ] &#93;
  • Link using PerlMonks shortcuts! What shortcuts can I use for linking?
  • See Writeup Formatting Tips and other pages linked from there for more info.