view mercurial/utils/hashutil.py @ 44831:6d3768b11241

diff: avoid going from contexts to nodes and back

This will allow us to pass in-memory contexts that may not have a
valid node to the diffing logic.

Differential Revision: https://phab.mercurial-scm.org/D8503

from __future__ import absolute_import

import hashlib

try:
    from ..thirdparty import sha1dc

    sha1 = sha1dc.sha1
except (ImportError, AttributeError):
    sha1 = hashlib.sha1