view mercurial/stack.py @ 41204:e3cfe0702eac

revlog: inline opener options logic into _loadindex()

We always call _loadindex() during __init__. But we also call
_loadindex() as part of censorrevision(). Before, when reloading
the index during censorrevision(), we would lose the configured
mmapindexthreshold setting from the opener. By inlining the
logic in _loadindex(), we ensure that opener options are always
respected when loading the index.

Differential Revision: https://phab.mercurial-scm.org/D5563

# 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