wNQc@sdZddlZdZdS(sDNS GENERATE range conversion.iNcCsLddl}d}d}d}x|D]}|dkr^|dkr^t|}d}d}q%|dkrt|}d}d }q%|jr||7}q%tjjd |q%W|d krtjjn|dkrt|}n|d kr t|}n|dkst|dks-t||ks?t|||fS( sConvert the text form of a range in a GENERATE statement to an integer. @param text: the textual range @type text: string @return: The start, stop and step values. @rtype: tuple iNitit-it/isCould not parse %si(ii(tpdbtinttisdigittdnst exceptiont SyntaxErrortAssertionError(ttextRtsteptcurtstatetctstarttstop((s0/usr/lib64/python2.7/site-packages/dns/grange.pyt from_texts4            (t__doc__RR(((s0/usr/lib64/python2.7/site-packages/dns/grange.pyts