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# -*- coding: utf-8 -*-
# Licensed under a 3-clause BSD style license - see LICENSE.rst
from ..core import IrreducibleUnit, Unit
class FunctionMixin(object):
"""Mixin class that makes UnitBase subclasses callable.
Provides a __call__ method that passes on arguments to a FunctionUnit.
Instances of this class should define ``_function_unit_class`` pointing
to the relevant class.
See units.py and logarithmic.py for usage.
"""
def __call__(self, unit=None):
return self._function_unit_class(physical_unit=unit,
function_unit=self)
class IrreducibleFunctionUnit(FunctionMixin, IrreducibleUnit):
pass
class RegularFunctionUnit(FunctionMixin, Unit):
pass
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