def initialize(line)
super()
@original = line
items = line.split
@timezone = (TZInfo::Timezone.get(items.last) rescue nil)
items.pop if @timezone
raise ArgumentError.new(
"not a valid cronline : '#{line}'"
) unless items.length == 5 or items.length == 6
offset = items.length - 5
@seconds = offset == 1 ? parse_item(items[0], 0, 59) : [ 0 ]
@minutes = parse_item(items[0 + offset], 0, 59)
@hours = parse_item(items[1 + offset], 0, 24)
@days = parse_item(items[2 + offset], 1, 31)
@months = parse_item(items[3 + offset], 1, 12)
@weekdays, @monthdays = parse_weekdays(items[4 + offset])
end