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

delta: skip "empty delta" optimisation for non-general case (issue6006)...

delta: skip "empty delta" optimisation for non-general case (issue6006) Non-general delta repository cannot delta against anything than prev. So even if the delta to prev is empty we should use it. This is similar to the change made in bafa1c4bb7a8. Differential Revision: https://phab.mercurial-scm.org/D5201

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