Source code for mwparserfromhell.string_mixin

# Copyright (C) 2012-2020 Ben Kurtovic <ben.kurtovic@gmail.com>
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"""
This module contains the :class:`.StringMixIn` type, which implements the
interface for the ``str`` type in a dynamic manner.
"""

from sys import getdefaultencoding

__all__ = ["StringMixIn"]


def inheritdoc(method):
    """Set __doc__ of *method* to __doc__ of *method* in its parent class.

    Since this is used on :class:`.StringMixIn`, the "parent class" used is
    ``str``. This function can be used as a decorator.
    """
    method.__doc__ = getattr(str, method.__name__).__doc__
    return method


[docs]class StringMixIn: """Implement the interface for ``str`` in a dynamic manner. To use this class, inherit from it and override the :meth:`__str__` method to return the string representation of the object. The various string methods will operate on the value of :meth:`__str__` instead of the immutable ``self`` like the regular ``str`` type. """ def __str__(self): raise NotImplementedError() def __bytes__(self): return bytes(self.__str__(), getdefaultencoding()) def __repr__(self): return repr(self.__str__()) def __lt__(self, other): return self.__str__() < other def __le__(self, other): return self.__str__() <= other def __eq__(self, other): return self.__str__() == other def __ne__(self, other): return self.__str__() != other def __gt__(self, other): return self.__str__() > other def __ge__(self, other): return self.__str__() >= other def __bool__(self): return bool(self.__str__()) def __len__(self): return len(self.__str__()) def __iter__(self): yield from self.__str__() def __getitem__(self, key): return self.__str__()[key] def __reversed__(self): return reversed(self.__str__()) def __contains__(self, item): return str(item) in self.__str__() def __getattr__(self, attr): if not hasattr(str, attr): raise AttributeError( "{!r} object has no attribute {!r}".format(type(self).__name__, attr) ) return getattr(self.__str__(), attr) maketrans = str.maketrans # Static method can't rely on __getattr__
del inheritdoc