view mercurial/stack.py @ 38984:a3105433ecc4

changegroup: inline _revchunk() into group()

_revchunk() was pretty minimal. I think having all the code for
generating data composing the changegroup in one function makes
things easier to understand.

As part of the refactor, we now call the _revisiondelta* functions
explicitly. This paves the road to refactor their argument
signatures.

Differential Revision: https://phab.mercurial-scm.org/D4141

# 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