view mercurial/stack.py @ 40339:f0e8f27768eb

streamclone: pass narrowing related info in _walkstreamfiles()

This patch build a matcher using the include and exclude arguments we have in
generatev2() and pass that matcher into _walkstreamfiles(). This will help us
in filtering files we stream depending on the includes and excludes passed in
by the user.

Differential Revision: https://phab.mercurial-scm.org/D4851

# 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