gistfile1.txt

use v6;
use Grammar::Debugger;
grammar IRC::Grammar:ver<1.001001> {
    token TOP        { [ <message> \n ]                                       }
    token message    { [':' <prefix> ' '+ ]? <command> <params>                }
    token prefix     { [<servername> | <nick>] [ '!' <user> ]? [ '@' <host> ]? }
    token command    { <[a..zA..Z]>+ | <[0..9]>**3                             }
    token params     { ' '* [ ':' <trailing> | <middle> <params> ]?            }
    token middle     { <-[:\ \0\r\n]> <-[\ \0\r\n]>+                           }
    token trailing   { <-[\0\r\n]>+                                            }
    token servername { <host> } # see RFC 952 [DNS:4] for allowed hostnames
    token host       { <-[\s!@]>+ } # see RFC 952 [DNS:4] for allowed hostnames
    token nick       { <[a..zA..Z]> [ <[a..zA..Z0..9]> | <[-\[\]\\`^{}]> ]+    }
    token user       { <-[\ \0\r\n]>+                                          }
}

say IRC::Grammar.parse(":verne.freenode.net 372 Perl6IRC :- running for their sustained support.\r\n");