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- # -*- coding: utf-8 -*-
- #
- # Copyright (C) 2012-2016 Ben Kurtovic <ben.kurtovic@gmail.com>
- # Copyright (C) 2019-2020 Yuri Astrakhan <YuriAstrakhan@gmail.com>
- #
- # Permission is hereby granted, free of charge, to any person obtaining a copy
- # of this software and associated documentation files (the "Software"), to deal
- # in the Software without restriction, including without limitation the rights
- # to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
- # copies of the Software, and to permit persons to whom the Software is
- # furnished to do so, subject to the following conditions:
- #
- # The above copyright notice and this permission notice shall be included in
- # all copies or substantial portions of the Software.
- #
- # THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- # IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- # FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
- # AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- # LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
- # OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
- # SOFTWARE.
-
- from __future__ import unicode_literals
-
- from sys import maxsize
-
- __all__ = []
-
-
- def inheritdoc(method):
- """Set __doc__ of *method* to __doc__ of *method* in its parent class.
-
- Since this is used on :class:`.SmartList`, the "parent class" used is
- ``list``. This function can be used as a decorator.
- """
- method.__doc__ = getattr(list, method.__name__).__doc__
- return method
-
-
- class _SliceNormalizerMixIn(object):
- """MixIn that provides a private method to normalize slices."""
-
- def _normalize_slice(self, key, clamp=False):
- """Return a slice equivalent to the input *key*, standardized."""
- if key.start is None:
- start = 0
- else:
- start = (len(self) + key.start) if key.start < 0 else key.start
- if key.stop is None or key.stop == maxsize:
- stop = len(self) if clamp else None
- else:
- stop = (len(self) + key.stop) if key.stop < 0 else key.stop
- return slice(start, stop, key.step or 1)
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