view mercurial/stack.py @ 41143:7b80406b8271

progress: move cached debug flag from progress.progbar to scmutil.progress

It's simpler this way. One possible drawback (and a possisble
advantage) is that we now check the debug flag once per topic, so
processes that generate new topics all the time will still check the
flag frequently.

Differential Revision: https://phab.mercurial-scm.org/D5528

# stack.py - Mercurial functions for stack definition
#
#  Copyright Matt Mackall <[e-mail]> and other
#
# 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 (
    revsetlang,
    scmutil,
)

def getstack(repo, rev=None):
    """return a sorted smartrev of the stack containing either rev if it is
    not None or the current working directory parent.

    The stack will always contain all drafts changesets which are ancestors to
    the revision and are not merges.
    """
    if rev is None:
        rev = '.'

    revspec = 'reverse(only(%s) and not public() and not ::merge())'
    revset = revsetlang.formatspec(revspec, rev)
    revisions = scmutil.revrange(repo, [revset])
    revisions.sort()
    return revisions