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"""
.. codeauthor:: Tsuyoshi Hombashi <tsuyoshi.hombashi@gmail.com>
"""
from ._checker import CheckerFactory, TypeCheckerBase, TypeCheckerDelegator
class NoneTypeCheckerStrictLevel0(TypeCheckerBase):
def is_instance(self):
return self._value is None
def is_valid_after_convert(self, converted_value):
return self._value is None
_factory = CheckerFactory(checker_mapping={0: NoneTypeCheckerStrictLevel0})
class NoneTypeChecker(TypeCheckerDelegator):
def __init__(self, value, strict_level):
super().__init__(value=value, checker_factory=_factory, strict_level=strict_level)
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