def _in_dom_range(self, rng, year, month, day_of_month):
# if either range value is negative, convert to positive by counting back from end of the month
if rng.start < 0 or rng.end < 0:
days_in_month = get_days_in_month(year, month)
rng = rng.clone()
if rng.start < 0:
rng.start = days_in_month + rng.start + 1
if rng.end < 0:
rng.end = days_in_month + rng.end + 1
return self._in_integer_range(rng, day_of_month, get_days_in_previous_month(year, month))
def _validate_date(self, value, index):
if value.year is not None:
if value.year < 1900 or value.year > 2200:
raise SchyntaxParseException("Year %d is not a valid year. Must be between 1900 and 2200." % value.year, self._input, index)
if value.month < 1 or value.month > 12:
raise SchyntaxParseException("Month %d is not a valid month. Must be between 1 and 12." % value.month, self._input, index)
year = value.year
if year is None:
year = 2000 # default to a leap year, if no year is specified
days_in_month = get_days_in_month(year, value.month)
if value.day < 1 or value.day > days_in_month:
raise SchyntaxParseException("%d is not a valid day for the month specified. Must be between 1 and %d" % (value.day, days_in_month), self._input, index)
def _in_date_range(self, rng, year, month, day_of_month):
if rng.is_half_open:
if rng.end.day == day_of_month and rng.end.month == month and (rng.end.year is None or rng.end.year == year):
return False
# check if in between start and end dates
if rng.start.year is not None:
# absolute dates with years. both will have years or neither will.
if year < rng.start.year or year > rng.end.year:
return False
if year == rng.start.year and self._compare_month_and_day(month, day_of_month, rng.start.month, rng.start.day) < 0:
return False
if year == rng.end.year and self._compare_month_and_day(month, day_of_month, rng.end.month, rng.end.day) > 0:
return False
elif rng.start > rng.end:
# split range
# "split ranges aren't allowed to have years (it wouldn't make any sense)"
if month == rng.start.month or month == rng.end.month:
if month == rng.start.month and day_of_month < rng.start.day:
return False
if month == rng.end.month and day_of_month > rng.end.day:
return False
elif not (month < rng.end.month or month > rng.start.month):
return False
else:
# "not a split range, and no year information - just month and day to go on"
if self._compare_month_and_day(month, day_of_month, rng.start.month, rng.start.day) < 0:
return False
if self._compare_month_and_day(month, day_of_month, rng.end.month, rng.end.day) > 0:
return False
# If we get here, then we're definitely somewhere within the range.
# If there's no interval, then there's nothing else we need to check
if rng.interval == 1: # I just made nonspecified intervals unify to a 1
return True
# "figure out the actual date of the low date so we know whether we're on the desired interval"
if rng.start.year is not None:
start_year = rng.start.year
elif rng.start > rng.end and month <= rng.end.month:
# "start date is from the previous year"
start_year = year - 1
else:
start_year = year
start_day = rng.start.day
# "check if start date was actually supposed to be February 29th, but isn't because of non-leap-year."
if rng.start.month == 2 and rng.start.day == 29 and get_days_in_month(start_year, 2) != 29:
# "bump the start day back to February 28th so that interval schemes work based on that imaginary date"
# "but seriously, people should probably just expect weird results if they're doing something that stupid."
start_day = 28
start = datetime.date(start_year, rng.start.month, start_day)
current = datetime.date(year, month, day_of_month)
day_count = (current - start).days
return day_count % rng.interval == 0