upstream/mercurial-mirror Files · mercurial/utils/interfaceutil.py

extensions: include current version in "invalid version" message...

extensions: include current version in "invalid version" message It is "not so rare" for the mercurial version to be badly detected at build time. In such case, version check for extensions gets confused. To help pinpoint the error, we now include the Mercurial's version number in the error message.

Gregory Szorc - - Load All Authors

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      # interfaceutil.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 absolute_import

      from .. import (

          encoding,

      )

      if encoding.environ.get('HGREALINTERFACES'):

          from ..thirdparty.zope import (

              interface as zi,

          )

          Attribute = zi.Attribute

          Interface = zi.Interface

          implementer = zi.implementer

      else:

          class Attribute(object):

              def __init__(self, __name__, __doc__=''):

                  pass

          class Interface(object):

              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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				# interfaceutil.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 absolute_import

				from .. import (
				encoding,
				)

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

				Attribute = zi.Attribute
				Interface = zi.Interface
				implementer = zi.implementer
				else:
				class Attribute(object):
				def __init__(self, __name__, __doc__=''):
				pass

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

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

				return wrapper