mirror of
https://github.com/facebook/sapling.git
synced 2024-10-11 09:17:30 +03:00
f2d5739705
Summary: Disallowing instabilities is a feature of evolution. For mutation tracking there is no problem with instabilities. Reviewed By: quark-zju Differential Revision: D19502221 fbshipit-source-id: c21a5021bf1a8b29abb6635928da50895e2cec33
57 lines
1.9 KiB
Python
57 lines
1.9 KiB
Python
# Portions Copyright (c) Facebook, Inc. and its affiliates.
|
|
#
|
|
# This software may be used and distributed according to the terms of the
|
|
# GNU General Public License version 2.
|
|
|
|
# rewriteutil.py - utility functions for rewriting changesets
|
|
#
|
|
# Copyright 2017 Octobus <contact@octobus.net>
|
|
#
|
|
# 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 absolute_import
|
|
|
|
from . import error, mutation, node, obsolete, revset
|
|
from .i18n import _
|
|
|
|
|
|
def precheck(repo, revs, action="rewrite"):
|
|
"""check if revs can be rewritten
|
|
action is used to control the error message.
|
|
|
|
Make sure this function is called after taking the lock.
|
|
"""
|
|
if node.nullrev in revs:
|
|
msg = _("cannot %s null changeset") % (action)
|
|
hint = _("no changeset checked out")
|
|
raise error.Abort(msg, hint=hint)
|
|
|
|
publicrevs = repo.revs("%ld and public()", revs)
|
|
if len(repo[None].parents()) > 1:
|
|
raise error.Abort(_("cannot %s while merging") % action)
|
|
|
|
if publicrevs:
|
|
msg = _("cannot %s public changesets") % (action)
|
|
hint = _("see 'hg help phases' for details")
|
|
raise error.Abort(msg, hint=hint)
|
|
|
|
newunstable = disallowednewunstable(repo, revs)
|
|
if newunstable:
|
|
raise error.Abort(_("cannot %s changeset with children") % action)
|
|
|
|
|
|
def disallowednewunstable(repo, revs):
|
|
"""Checks whether editing the revs will create new unstable changesets and
|
|
are we allowed to create them.
|
|
|
|
To allow new unstable changesets, set the config:
|
|
`experimental.evolution.allowunstable=True`
|
|
"""
|
|
if mutation.enabled(repo):
|
|
return revset.baseset()
|
|
allowunstable = obsolete.isenabled(repo, obsolete.allowunstableopt)
|
|
if allowunstable:
|
|
return revset.baseset()
|
|
return repo.revs("(%ld::) - %ld", revs, revs)
|