view mercurial/stack.py @ 46047:4b89cf08d8dc

upgrade: split definition and management of the actions from the main code

This is a second step to clarify and clean up this code. The code responsible
for definition which action exist, are possible and their compatibility if moved
into a sub module.

This clarify the main code and prepare further cleanup.

Differential Revision: https://phab.mercurial-scm.org/D9477

# 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