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

changegroup: control reordering via constructor argument...

changegroup: control reordering via constructor argument cg2packer.__init__ exists just to override self._reorder. Let's parameterize this behavior via an argument to the parent's __init__. The logic for self._reorder is kinda wonky. None is used as a special value and the value should be None in some situations. It is probably worth rewriting this logic to make behavior more explicit. This will likely happen as part of future work to control the delta generation process that I have planned. Differential Revision: https://phab.mercurial-scm.org/D4082

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