dirstate: remove the python-side whitelist of allowed matchers
This whitelist is too permissive because it allows matchers that contain
disallowed ones deep inside, for example through `intersectionmatcher`.
It is also too restrictive because it doesn't pass through
some of the matchers we support, such as `patternmatcher`.
It's also unnecessary because unsupported matchers raise
`FallbackError` and we fall back anyway.
Making this change makes more of the tests use rust code path,
and therefore subtly change behavior. For example, rust status
in largefiles repos seems to have strange behavior.
# repoviewutil.py - constaints data relevant to repoview.py and other module
#
# Copyright 2012 Pierre-Yves David <pierre-yves.david@ens-lyon.org>
# Logilab SA <contact@logilab.fr>
#
# This software may be used and distributed according to the terms of the
# GNU General Public License version 2 or any later version.
from .. import error
### Nearest subset relation
# Nearest subset of filter X is a filter Y so that:
# * Y is included in X,
# * X - Y is as small as possible.
# This create and ordering used for branchmap purpose.
# the ordering may be partial
subsettable = {
None: b'visible',
b'visible-hidden': b'visible',
b'visible': b'served',
b'served.hidden': b'served',
b'served': b'immutable',
b'immutable': b'base',
}
def get_ordered_subset():
"""return a list of subset name from dependencies to dependents"""
_unfinalized = set(subsettable.values())
ordered = []
# the subset table is expected to be small so we do the stupid N² version
# of the algorithm
while _unfinalized:
this_level = []
for candidate in _unfinalized:
dependency = subsettable.get(candidate)
if dependency not in _unfinalized:
this_level.append(candidate)
if not this_level:
msg = "cyclic dependencies in repoview subset %r"
msg %= subsettable
raise error.ProgrammingError(msg)
this_level.sort(key=lambda x: x if x is not None else '')
ordered.extend(this_level)
_unfinalized.difference_update(this_level)
return ordered