view mercurial/utils/interfaceutil.py @ 40534:7ed611c60168

revsets: make bookmark/named('re:nonexistent') not abort (issue6018) (BC)

Foozy documented the differences between revsets branch(), tag(),
bookmark(), and named() in eeb5d5ab14a6 (revset: raise RepoLookupError
to make present() predicate continue the query, 2015-01-31). He seemed
to want tag() to change behavior to not error out on non-matching
regular expressions. I think it's instead bookmark() and named() that
should not error out. So that's what this patch does.

Differential Revision: https://phab.mercurial-scm.org/D5220

# interfaceutil.py - Utilities for declaring interfaces.
#
# Copyright 2018 Gregory Szorc <[e-mail]>
#
# 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