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##############################################################################
# Copyright (c) 2020 Zope Foundation and Contributors.
# All Rights Reserved.
#
# This software is subject to the provisions of the Zope Public License,
# Version 2.1 (ZPL). A copy of the ZPL should accompany this distribution.
# THIS SOFTWARE IS PROVIDED "AS IS" AND ANY AND ALL EXPRESS OR IMPLIED
# WARRANTIES ARE DISCLAIMED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
# WARRANTIES OF TITLE, MERCHANTABILITY, AGAINST INFRINGEMENT, AND FITNESS
# FOR A PARTICULAR PURPOSE.
##############################################################################
"""
Interface definitions paralleling the abstract base classes defined in
:mod:`numbers`.
After this module is imported, the standard library types will declare
that they implement the appropriate interface.
.. versionadded:: 5.0.0
"""
from __future__ import absolute_import
import numbers as abc
from zope.interface.common import ABCInterface
from zope.interface.common import optional
from zope.interface._compat import PYTHON2 as PY2
# pylint:disable=inherit-non-class,
# pylint:disable=no-self-argument,no-method-argument
# pylint:disable=unexpected-special-method-signature
# pylint:disable=no-value-for-parameter
class INumber(ABCInterface):
abc = abc.Number
class IComplex(INumber):
abc = abc.Complex
@optional
def __complex__():
"""
Rarely implemented, even in builtin types.
"""
if PY2:
@optional
def __eq__(other):
"""
The interpreter may supply one through complicated rules.
"""
__ne__ = __eq__
class IReal(IComplex):
abc = abc.Real
@optional
def __complex__():
"""
Rarely implemented, even in builtin types.
"""
__floor__ = __ceil__ = __complex__
if PY2:
@optional
def __le__(other):
"""
The interpreter may supply one through complicated rules.
"""
__lt__ = __le__
class IRational(IReal):
abc = abc.Rational
class IIntegral(IRational):
abc = abc.Integral
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