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

interfaces: convert the repository zope interfaces to Protocol classes...

interfaces: convert the repository zope interfaces to Protocol classes This is the same transformation as did for dirstate. The same caveat applies- the code may not be valid, since the functions are missing the `self` arg, and the attrs should be plain attrs, not zope `Attribute`. These classes are pretty intertwined however, so making the same transformation to everything makes it easier to change and review. Additionally, there are some classes that subclass multiple protocol classes, and should themselves subclass `typing.Protocol` to be a protocol class. But defer that for now for clarity.

Matt Harbison - - Load All Authors

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      # repoviewutil.py - constaints data relevant to repoview.py and other module

      #

      # Copyright 2012 Pierre-Yves David <pierre-yves.david@ens-lyon.org>

      #                Logilab SA        <contact@logilab.fr>

      #

      # This software may be used and distributed according to the terms of the

      # GNU General Public License version 2 or any later version.

      from __future__ import annotations

      from .. import error

      ### Nearest subset relation

      # Nearest subset of filter X is a filter Y so that:

      # * Y is included in X,

      # * X - Y is as small as possible.

      # This create and ordering used for branchmap purpose.

      # the ordering may be partial

      subsettable = {

          None: b'visible',

          b'visible-hidden': b'visible',

          b'visible': b'served',

          b'served.hidden': b'served',

          b'served': b'immutable',

          b'immutable': b'base',

      }

      def get_ordered_subset():

          """return a list of subset name from dependencies to dependents"""

          _unfinalized = set(subsettable.values())

          ordered = []

          # the subset table is expected to be small so we do the stupid N² version

          # of the algorithm

          while _unfinalized:

              this_level = []

              for candidate in _unfinalized:

                  dependency = subsettable.get(candidate)

                  if dependency not in _unfinalized:

                      this_level.append(candidate)

              if not this_level:

                  msg = "cyclic dependencies in repoview subset %r"

                  msg %= subsettable

                  raise error.ProgrammingError(msg)

              this_level.sort(key=lambda x: x if x is not None else '')

              ordered.extend(this_level)

              _unfinalized.difference_update(this_level)

          return ordered

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				# repoviewutil.py - constaints data relevant to repoview.py and other module
				#
				# Copyright 2012 Pierre-Yves David <pierre-yves.david@ens-lyon.org>
				# Logilab SA <contact@logilab.fr>
				#
				# This software may be used and distributed according to the terms of the
				# GNU General Public License version 2 or any later version.

				from __future__ import annotations

				from .. import error

				### Nearest subset relation
				# Nearest subset of filter X is a filter Y so that:
				# * Y is included in X,
				# * X - Y is as small as possible.
				# This create and ordering used for branchmap purpose.
				# the ordering may be partial
				subsettable = {
				None: b'visible',
				b'visible-hidden': b'visible',
				b'visible': b'served',
				b'served.hidden': b'served',
				b'served': b'immutable',
				b'immutable': b'base',
				}


				def get_ordered_subset():
				"""return a list of subset name from dependencies to dependents"""
				_unfinalized = set(subsettable.values())
				ordered = []

				# the subset table is expected to be small so we do the stupid N² version
				# of the algorithm
				while _unfinalized:
				this_level = []
				for candidate in _unfinalized:
				dependency = subsettable.get(candidate)
				if dependency not in _unfinalized:
				this_level.append(candidate)

				if not this_level:
				msg = "cyclic dependencies in repoview subset %r"
				msg %= subsettable
				raise error.ProgrammingError(msg)

				this_level.sort(key=lambda x: x if x is not None else '')

				ordered.extend(this_level)
				_unfinalized.difference_update(this_level)

				return ordered