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

dagutil: use revlog.parentrevs() for resolving parent revisions...

dagutil: use revlog.parentrevs() for resolving parent revisions And remove parents() since it is no longer used. revlog.parentrevs() is almost the same as parents(). The main difference is that parentrevs() can return nullrev. dagop.headrevs() already handles nullrev. We add an inline check for nullrev in the other call site to account for the difference. .. api:: parents() removed from dagutil classes Use parentrevs() on the storage object instead. Differential Revision: https://phab.mercurial-scm.org/D4328

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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