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# holidays
# --------
# A fast, efficient Python library for generating country, province and state
# specific sets of holidays on the fly. It aims to make determining whether a
# specific date is a holiday as fast and flexible as possible.
#
# Authors: Vacanza Team and individual contributors (see CONTRIBUTORS file)
# dr-prodigy <dr.prodigy.github@gmail.com> (c) 2017-2023
# ryanss <ryanssdev@icloud.com> (c) 2014-2017
# Website: https://github.com/vacanza/holidays
# License: MIT (see LICENSE file)
from datetime import date
from holidays.helpers import _normalize_tuple
class StaticHolidays:
"""Helper class for special and substituted holidays support.
Populates special and substituted holidays related data from
an external class.
"""
def __init__(self, cls) -> None:
for attribute_name in cls.__dict__.keys():
# Special holidays.
if attribute_name.startswith("special_") and (
value := getattr(cls, attribute_name, None)
):
setattr(self, attribute_name, value)
self.has_special_holidays = True
# "Substituted" labels.
elif attribute_name.startswith("substituted_") and (
value := getattr(cls, attribute_name, None)
):
setattr(self, attribute_name, value)
# Populate substituted holidays from adjacent years.
self.weekend_workdays = set()
for special_public_holidays in getattr(self, "special_public_holidays", {}).values():
for special_public_holiday in _normalize_tuple(special_public_holidays):
# Normally, special holiday is a 3 item tuple: (month, day, name).
if len(special_public_holiday) < 4: # Skip non-substituted holidays.
continue
# Handle cross-year substituted holidays.
if len(special_public_holiday) == 5: # The fifth element is the year.
_, _, from_month, from_day, from_year = special_public_holiday
self.weekend_workdays.add(date(from_year, from_month, from_day))
self.has_substituted_holidays = True
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