def _field_matches_upper_bound_inclusive(field):
"""
Return :bool:`True` if the given field matches its maximum bound value.
"""
below = field.matches(field.max - 1)
exact = field.matches(field.max)
above = field.matches(field.max + 1)
return below is True and exact is True and above is False
def _field_matches_multiple_values_within_bounds(field, values):
"""
Return :bool:`True` if the given field _only_ matches against a collection of specified values. This will check
that the given values match and that no other values within the expected min/max bounds do.
"""
exact = (field.matches(v) for v in values)
others_within_bounds = (field.matches(v) for v in compat.range(field.min, field.max) if v not in values)
return all(exact) and not any(others_within_bounds)
def _field_matches_single_value_within_bounds(field, value):
"""
Return :bool:`True` if the given field _only_ matches the given value. This will check that the given
value matches and that no other values within the expected min/max bounds do.
"""
exact = field.matches(value)
others_within_bounds = (field.matches(v) for v in compat.range(field.min, field.max) if v != value)
return exact is True and not any(others_within_bounds)
def _field_matches_upper_bound_inclusive(field):
"""
Return :bool:`True` if the given field matches its maximum bound value.
"""
below = field.matches(field.max - 1)
exact = field.matches(field.max)
above = field.matches(field.max + 1)
return below is True and exact is True and above is False
def _field_matches_multiple_values_within_bounds(field, values):
"""
Return :bool:`True` if the given field _only_ matches against a collection of specified values. This will check
that the given values match and that no other values within the expected min/max bounds do.
"""
exact = (field.matches(v) for v in values)
others_within_bounds = (field.matches(v)
for v in compat.range(field.min, field.max)
if v not in values)
return all(exact) and not any(others_within_bounds)
def _field_matches_single_value_within_bounds(field, value):
"""
Return :bool:`True` if the given field _only_ matches the given value. This will check that the given
value matches and that no other values within the expected min/max bounds do.
"""
exact = field.matches(value)
others_within_bounds = (field.matches(v)
for v in compat.range(field.min, field.max)
if v != value)
return exact is True and not any(others_within_bounds)
def fields_lazy_eval(datetime_fields,
expression_fields,
field_names=field.NAMES):
"""
Generator function that yields back individual field names and the "match" result of the
:class:`~crython.field.CronField` with the :class:`~datetime.datetime` field value.
:param datetime_fields: Mapping of field name to actual datetime value.
:param expression_fields: Mapping of field name to cron field instance.
:param field_names: Sequence of field names to use.
:return: Generator that yields tuple pairs of field name and the match result.
"""
for name in field_names:
field = expression_fields[name] # pylint: disable=redefined-outer-name
time = datetime_fields[name]
match = field.matches(datetime_fields[name])
match_str = 'matches' if match else 'does not match'
self.logger.debug('Field "{0}:{1}" {2} value "{3}"'.format(
name, field, match_str, time))
yield match
