annotate mercurial/rewriteutil.py @ 40163:9f0ee4a60d65

tests: ensure the python 3 passing test list stays sorted Differential Revision: https://phab.mercurial-scm.org/D4984
author Augie Fackler <augie@google.com>
date Fri, 12 Oct 2018 06:39:32 -0400
parents 490df753894d
children 8c6329fa6038
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1 # rewriteutil.py - utility functions for rewriting changesets
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2 #
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3 # Copyright 2017 Octobus <contact@octobus.net>
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4 #
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5 # This software may be used and distributed according to the terms of the
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6 # GNU General Public License version 2 or any later version.
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7
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8 from __future__ import absolute_import
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9
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10 from .i18n import _
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11
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12 from . import (
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13 error,
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14 node,
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15 obsolete,
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16 revset,
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17 )
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18
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19 def precheck(repo, revs, action='rewrite'):
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20 """check if revs can be rewritten
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21 action is used to control the error message.
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22
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23 Make sure this function is called after taking the lock.
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24 """
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25 if node.nullrev in revs:
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26 msg = _("cannot %s null changeset") % (action)
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27 hint = _("no changeset checked out")
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28 raise error.Abort(msg, hint=hint)
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29
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30 publicrevs = repo.revs('%ld and public()', revs)
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31 if len(repo[None].parents()) > 1:
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32 raise error.Abort(_("cannot %s while merging") % action)
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33
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34 if publicrevs:
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35 msg = _("cannot %s public changesets") % (action)
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36 hint = _("see 'hg help phases' for details")
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37 raise error.Abort(msg, hint=hint)
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38
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39 newunstable = disallowednewunstable(repo, revs)
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40 if newunstable:
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41 raise error.Abort(_("cannot %s changeset with children") % action)
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42
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43 def disallowednewunstable(repo, revs):
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44 """Checks whether editing the revs will create new unstable changesets and
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45 are we allowed to create them.
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46
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47 To allow new unstable changesets, set the config:
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48 `experimental.evolution.allowunstable=True`
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49 """
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50 allowunstable = obsolete.isenabled(repo, obsolete.allowunstableopt)
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51 if allowunstable:
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52 return revset.baseset()
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53 return repo.revs("(%ld::) - %ld", revs, revs)