merge: use the new action based mapping introduced in mergeresult obj
Before this patch, we have good number of instances of following types:
```
for f, (m, args, msg) in mresult.actions:
if m == ACTION_X:
do_something
```
We iterate over the whole list and then filter for a certain action. Previous
patch introduced a action based mapping in mergeresult object. The above code
now looks like:
```
for f, args, msg in mresult.getactions([ACTION_X, ...]):
do_something
```
Differential Revision: https://phab.mercurial-scm.org/D8831
# 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 .i18n import _
from . import (
error,
node,
obsolete,
revset,
)
def precheck(repo, revs, action=b'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 = _(b"cannot %s null changeset") % action
hint = _(b"no changeset checked out")
raise error.Abort(msg, hint=hint)
if len(repo[None].parents()) > 1:
raise error.Abort(_(b"cannot %s while merging") % action)
publicrevs = repo.revs(b'%ld and public()', revs)
if publicrevs:
msg = _(b"cannot %s public changesets") % action
hint = _(b"see 'hg help phases' for details")
raise error.Abort(msg, hint=hint)
newunstable = disallowednewunstable(repo, revs)
if newunstable:
raise error.Abort(_(b"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`
"""
allowunstable = obsolete.isenabled(repo, obsolete.allowunstableopt)
if allowunstable:
return revset.baseset()
return repo.revs(b"(%ld::) - %ld", revs, revs)
def skip_empty_successor(ui, command):
empty_successor = ui.config(b'rewrite', b'empty-successor')
if empty_successor == b'skip':
return True
elif empty_successor == b'keep':
return False
else:
raise error.ConfigError(
_(
b"%s doesn't know how to handle config "
b"rewrite.empty-successor=%s (only 'skip' and 'keep' are "
b"supported)"
)
% (command, empty_successor)
)