view mercurial/stack.py @ 46711:a41565bef69f

changegroup: add v4 changegroup for revlog v2 exchange

This change only adds the required infrastructure for the new changegroup format
and does not do any actual exchange. This will be done in the next patches.

Differential Revision: https://phab.mercurial-scm.org/D10026

# 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


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 = b'.'

    revspec = b'only(%s) and not public() and not ::merge()'
    revisions = repo.revs(revspec, rev)
    revisions.sort()
    return revisions