view mercurial/interfaces/util.py @ 51673:f70f61a8c5bc

typing: restore `encoding.encoding` and `encoding.encodingmode` to bytes

Somewhere between hg 3dbc7b1ecaba and hg 8e3f6b5bf720, pytype determined the
signature of these fields changed from `bytes` to `Any`.  Not sure why- the type
of `environ` then and now is: `Union[WindowsEnviron, Dict[bytes, bytes], os._Environ[bytes]]`
That said, PyCharm wasn't able to figure out the type of `environ`, and the
`WindowsEnviron` class extends `MutableMapping` without specifying bytes for the
key and value types in py3.9.  But that's not changed in my setup, so I can't
explain it.

# util.py - Utilities for declaring interfaces.
#
# Copyright 2018 Gregory Szorc <[e-mail]>
#
# This software may be used and distributed according to the terms of the
# GNU General Public License version 2 or any later version.

# zope.interface imposes a run-time cost due to module import overhead and
# bookkeeping for declaring interfaces. So, we use stubs for various
# zope.interface primitives unless instructed otherwise.


from .. import encoding

if encoding.environ.get(b'HGREALINTERFACES'):
    from ..thirdparty.zope import interface as zi

    Attribute = zi.Attribute
    Interface = zi.Interface
    implementer = zi.implementer
else:

    class Attribute:
        def __init__(self, __name__, __doc__=b''):
            pass

    class Interface:
        def __init__(
            self, name, bases=(), attrs=None, __doc__=None, __module__=None
        ):
            pass

    def implementer(*ifaces):
        def wrapper(cls):
            return cls

        return wrapper