stack: get stack data directly from stack and remove stackdata()
stackdata function began its life in 137f8b04901e as a proto-stack: it computed
stack revs on its own and only had one property to return, "changesetcount".
Later it started to prepare and return more properties, but since b933a8068c17
it was computing revs using a getstack function. And then finally in
17749d9d3968 it started to rely on stack class entirely.
It was a good function, but now, when all the logic it provided was factored
into stack class, I'd say it's finally time for it to be put to rest.
from __future__ import absolute_import
from mercurial.i18n import _
from mercurial import (
bookmarks,
destutil,
error,
extensions,
)
from . import (
common,
topicmap,
)
from .evolvebits import builddependencies
def _destmergebranch(orig, repo, action='merge', sourceset=None,
onheadcheck=True, destspace=None):
# XXX: take destspace into account
if sourceset is None:
p1 = repo['.']
else:
# XXX: using only the max here is flacky. That code should eventually
# be updated to take care of the whole sourceset.
p1 = repo[max(sourceset)]
top = None
if common.hastopicext(repo):
top = p1.topic()
if top:
revs = repo.revs('topic(%s) - obsolete()', top)
deps, rdeps = builddependencies(repo, revs)
heads = [r for r in revs if not rdeps[r]]
if onheadcheck and p1.rev() not in heads:
raise error.Abort(_("not at topic head, update or explicit"))
# prune heads above the source
otherheads = set(heads)
pool = set([p1.rev()])
while pool:
current = pool.pop()
otherheads.discard(current)
pool.update(rdeps[current])
if not otherheads:
# nothing to do at the topic level
bhead = ngtip(repo, p1.branch(), all=True)
if not bhead:
raise error.NoMergeDestAbort(_("nothing to merge"))
elif 1 == len(bhead):
return bhead[0]
else:
msg = _("branch '%s' has %d heads "
"- please merge with an explicit rev")
hint = _("run 'hg heads .' to see heads")
raise error.ManyMergeDestAbort(msg % (p1.branch(), len(bhead)),
hint=hint)
elif len(otherheads) == 1:
return otherheads.pop()
else:
msg = _("topic '%s' has %d heads "
"- please merge with an explicit rev") % (top, len(heads))
raise error.ManyMergeDestAbort(msg)
return orig(repo, action, sourceset, onheadcheck, destspace=destspace)
def _destupdatetopic(repo, clean, check=None):
"""decide on an update destination from current topic"""
if not common.hastopicext(repo):
return None, None, None
movemark = node = None
topic = repo.currenttopic
if topic:
revs = repo.revs('.::topic(%s)', topic)
else:
revs = []
if not revs:
return None, None, None
node = revs.last()
if bookmarks.isactivewdirparent(repo):
movemark = repo['.'].node()
return node, movemark, None
def desthistedit(orig, ui, repo):
if not common.hastopicext(repo):
return None
if not (ui.config('histedit', 'defaultrev', None) is None
and repo.currenttopic):
return orig(ui, repo)
revs = repo.revs('::. and stack()')
if revs:
return revs.min()
return None
def ngtip(repo, branch, all=False):
"""tip new generation"""
## search for untopiced heads of branch
# could be heads((::branch(x) - topic()))
# but that is expensive
#
# we should write plain code instead
tmap = topicmap.gettopicrepo(repo).branchmap()
if branch not in tmap:
return []
elif all:
return tmap.branchheads(branch)
else:
return [tmap.branchtip(branch)]
def modsetup(ui):
"""run a uisetup time to install all destinations wrapping"""
extensions.wrapfunction(destutil, '_destmergebranch', _destmergebranch)
bridx = destutil.destupdatesteps.index('branch')
destutil.destupdatesteps.insert(bridx, 'topic')
destutil.destupdatestepmap['topic'] = _destupdatetopic
extensions.wrapfunction(destutil, 'desthistedit', desthistedit)