tests: update narrowspec when narrowspec, not dirstate, is accessed
test-narrow-expanddirstate.t mimics a Google-internal extension that
updates the narrowspec whenever the dirstate is accessed. Since
1d09ba0d2ed3 (narrow: move remaining narrow-limited dirstate walks to
core, 2018-10-01) and a few commits before it, we no longer restrict
repo.dirstate.walk() to the narrowspec. It is instead done at a higher
level (e.g. context.status()). We were running into problems with the
Google-internal extension when importing those commits. The issue was
that the narrowspec was read before the first dirstate access. I
believe the right fix is to instead update the narrowspec when trying
to read it (not when reading the dirstate), so that's what this patch
does.
Differential Revision: https://phab.mercurial-scm.org/D5275
# revlogdeltas.py - constant used for revlog logic
#
# Copyright 2005-2007 Matt Mackall <mpm@selenic.com>
# Copyright 2018 Octobus <contact@octobus.net>
#
# This software may be used and distributed according to the terms of the
# GNU General Public License version 2 or any later version.
"""Helper class to compute deltas stored inside revlogs"""
from __future__ import absolute_import
from .. import (
repository,
util,
)
# revlog header flags
REVLOGV0 = 0
REVLOGV1 = 1
# Dummy value until file format is finalized.
# Reminder: change the bounds check in revlog.__init__ when this is changed.
REVLOGV2 = 0xDEAD
FLAG_INLINE_DATA = (1 << 16)
FLAG_GENERALDELTA = (1 << 17)
REVLOG_DEFAULT_FLAGS = FLAG_INLINE_DATA
REVLOG_DEFAULT_FORMAT = REVLOGV1
REVLOG_DEFAULT_VERSION = REVLOG_DEFAULT_FORMAT | REVLOG_DEFAULT_FLAGS
REVLOGV1_FLAGS = FLAG_INLINE_DATA | FLAG_GENERALDELTA
REVLOGV2_FLAGS = REVLOGV1_FLAGS
# revlog index flags
# For historical reasons, revlog's internal flags were exposed via the
# wire protocol and are even exposed in parts of the storage APIs.
# revision has censor metadata, must be verified
REVIDX_ISCENSORED = repository.REVISION_FLAG_CENSORED
# revision hash does not match data (narrowhg)
REVIDX_ELLIPSIS = repository.REVISION_FLAG_ELLIPSIS
# revision data is stored externally
REVIDX_EXTSTORED = repository.REVISION_FLAG_EXTSTORED
REVIDX_DEFAULT_FLAGS = 0
# stable order in which flags need to be processed and their processors applied
REVIDX_FLAGS_ORDER = [
REVIDX_ISCENSORED,
REVIDX_ELLIPSIS,
REVIDX_EXTSTORED,
]
REVIDX_KNOWN_FLAGS = util.bitsfrom(REVIDX_FLAGS_ORDER)
# bitmark for flags that could cause rawdata content change
REVIDX_RAWTEXT_CHANGING_FLAGS = REVIDX_ISCENSORED | REVIDX_EXTSTORED
SPARSE_REVLOG_MAX_CHAIN_LENGTH = 1000