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"""
pint.facets.measurement.registry
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
:copyright: 2022 by Pint Authors, see AUTHORS for more details.
:license: BSD, see LICENSE for more details.
"""
from __future__ import annotations
from typing import Generic
from ...compat import TypeAlias, ufloat
from ...util import create_class_with_registry
from ..plain import GenericPlainRegistry, QuantityT, UnitT
from . import objects
class GenericMeasurementRegistry(
Generic[QuantityT, UnitT], GenericPlainRegistry[QuantityT, UnitT]
):
Measurement = objects.Measurement
def _init_dynamic_classes(self) -> None:
"""Generate subclasses on the fly and attach them to self"""
super()._init_dynamic_classes()
if ufloat is not None:
self.Measurement = create_class_with_registry(self, self.Measurement)
else:
def no_uncertainties(*args, **kwargs):
raise RuntimeError(
"Pint requires the 'uncertainties' package to create a Measurement object."
)
self.Measurement = no_uncertainties
class MeasurementRegistry(
GenericMeasurementRegistry[objects.MeasurementQuantity, objects.MeasurementUnit]
):
Quantity: TypeAlias = objects.MeasurementQuantity
Unit: TypeAlias = objects.MeasurementUnit
|
