ancestor: use heapreplace() in place of heappop/heappush()
This should be slightly faster.
Overall perfancestors result::
cpython nginx mercurial
------------- ---------------- ---------------- ----------------
b6db2e80a9ce^ 0.103461 0.006303 0.035716
8eb2145ff0fb 0.192307 (x1.86) 0.012115 (x1.92) 0.052135 (x1.46)
this patch 0.139986 (x1.35) 0.006389 (x1.01) 0.037176 (x1.04)
# interfaceutil.py - Utilities for declaring interfaces.
#
# Copyright 2018 Gregory Szorc <gregory.szorc@gmail.com>
#
# This software may be used and distributed according to the terms of the
# GNU General Public License version 2 or any later version.
# zope.interface imposes a run-time cost due to module import overhead and
# bookkeeping for declaring interfaces. So, we use stubs for various
# zope.interface primitives unless instructed otherwise.
from __future__ import absolute_import
from .. import (
encoding,
)
if encoding.environ.get('HGREALINTERFACES'):
from ..thirdparty.zope import (
interface as zi,
)
Attribute = zi.Attribute
Interface = zi.Interface
implementer = zi.implementer
else:
class Attribute(object):
def __init__(self, __name__, __doc__=''):
pass
class Interface(object):
def __init__(self, name, bases=(), attrs=None, __doc__=None,
__module__=None):
pass
def implementer(*ifaces):
def wrapper(cls):
return cls
return wrapper