view mercurial/cacheutil.py @ 40000:0b24fcd88066

dagop: extract descendants() from revlog module

This method needs to be implemented in other storage backends and is
generic if we parameterize the functions for retrieving revision
numbers and parent revision numbers.

Let's extract it to dagop so backends don't need to reinvent the
wheel.

I'm not too worried about performance overhead of the extra function
call because I don't expect anyone to be calling descendants() in a
tight loop.

Differential Revision: https://phab.mercurial-scm.org/D4794

# scmutil.py - Mercurial core utility functions
#
#  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 repoview

def cachetocopy(srcrepo):
    """return the list of cache file valuable to copy during a clone"""
    # In local clones we're copying all nodes, not just served
    # ones. Therefore copy all branch caches over.
    cachefiles = ['branch2']
    cachefiles += ['branch2-%s' % f for f in repoview.filtertable]
    cachefiles += ['rbc-names-v1', 'rbc-revs-v1']
    cachefiles += ['tags2']
    cachefiles += ['tags2-%s' % f for f in repoview.filtertable]
    cachefiles += ['hgtagsfnodes1']
    return cachefiles