upstream/mercurial-mirror Files · mercurial/thirdparty/attr/converters.py

lfs: move the 'supportedoutgoingversions' handling to changegroup.py...

lfs: move the 'supportedoutgoingversions' handling to changegroup.py This handling already exists here for the narrow extension. We still need to either figure out how to enable changegroup v3 without the extension, or figure out how to let the server detect that the client doesn't have it loaded, and emit a user friendly error[1]. I can't tell if D1944 is the appropriate vehicle for the latter. [1] https://www.mercurial-scm.org/pipermail/mercurial-devel/2018-January/109550.html

Siddharth Agarwal - - Load All Authors

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      """

      Commonly useful converters.

      """

      from __future__ import absolute_import, division, print_function

      def optional(converter):

          """

          A converter that allows an attribute to be optional. An optional attribute

          is one which can be set to ``None``.

          :param callable converter: the converter that is used for non-``None``

              values.

          ..  versionadded:: 17.1.0

          """

          def optional_converter(val):

              if val is None:

                  return None

              return converter(val)

          return optional_converter

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				"""
				Commonly useful converters.
				"""

				from __future__ import absolute_import, division, print_function


				def optional(converter):
				"""
				A converter that allows an attribute to be optional. An optional attribute
				is one which can be set to ``None``.

				:param callable converter: the converter that is used for non-``None``
				values.

				.. versionadded:: 17.1.0
				"""

				def optional_converter(val):
				if val is None:
				return None
				return converter(val)

				return optional_converter