upstream/mercurial-mirror Files · mercurial/interfaces/util.py

mdiff: tweak calls into `bdiff.fixws` to match its type hints...

mdiff: tweak calls into `bdiff.fixws` to match its type hints It turns out that protocol classes can be used for modules too, which is great because all of the dynamically loaded modules (and their attributes) are currently inferred as `Any`. See the next commit for details. A protocol class for the `bdiff` module detected this (trivial) mismatch, so correct it first. The various implementations of this method are typed as taking a `bool`. The `cext` implementation parses its arguments with `PyArg_ParseTuple(args, "Sb:fixws", &s, &allws)`, which wants an `int`. But experimenting in `hg debugshell` under py38, passing `True` or `False` to `cext.fixws()` also works. We can change the implementation to use "p" (which was introduced in py33) instead of "b", but that's beyond the scope of this.

Matt Harbison - - Load All Authors

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      # util.py - Utilities for declaring interfaces.

      #

      # Copyright 2018 Gregory Szorc <gregory.szorc@gmail.com>

      #

      # 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 __future__ import annotations

      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

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				# util.py - Utilities for declaring interfaces.
				#
				# Copyright 2018 Gregory Szorc <gregory.szorc@gmail.com>
				#
				# 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 __future__ import annotations

				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