dirstate: rename parentchange to changing_parents
Since the new argument breaks the API anyway, we can rename it to a better name.
The previous name `parentchange` might be seen as something active, a function
that would directly change the parents, however this is just a context manager
to frame the operation that will change the parents and adjust the
dirstate content accordingly.
In addition, the future sister method that will be about changes to tracking and
files would have a hard time fitting in the same naming scheme in a clear way.
The new naming uses a clear prefix will make it more distinct from other
dirstate methods and easier to extend with other similar contexts.
# Copyright 2016-present Facebook. All Rights Reserved.
#
# support: fastannotate support for hgweb, and filectx
#
# This software may be used and distributed according to the terms of the
# GNU General Public License version 2 or any later version.
from mercurial.pycompat import getattr
from mercurial import (
context as hgcontext,
dagop,
extensions,
hgweb,
patch,
util,
)
from . import (
context,
revmap,
)
class _lazyfctx:
"""delegates to fctx but do not construct fctx when unnecessary"""
def __init__(self, repo, node, path):
self._node = node
self._path = path
self._repo = repo
def node(self):
return self._node
def path(self):
return self._path
@util.propertycache
def _fctx(self):
return context.resolvefctx(self._repo, self._node, self._path)
def __getattr__(self, name):
return getattr(self._fctx, name)
def _convertoutputs(repo, annotated, contents):
"""convert fastannotate outputs to vanilla annotate format"""
# fastannotate returns: [(nodeid, linenum, path)], [linecontent]
# convert to what fctx.annotate returns: [annotateline]
results = []
fctxmap = {}
annotateline = dagop.annotateline
for i, (hsh, linenum, path) in enumerate(annotated):
if (hsh, path) not in fctxmap:
fctxmap[(hsh, path)] = _lazyfctx(repo, hsh, path)
# linenum: the user wants 1-based, we have 0-based.
lineno = linenum + 1
fctx = fctxmap[(hsh, path)]
line = contents[i]
results.append(annotateline(fctx=fctx, lineno=lineno, text=line))
return results
def _getmaster(fctx):
"""(fctx) -> str"""
return fctx._repo.ui.config(b'fastannotate', b'mainbranch') or b'default'
def _doannotate(fctx, follow=True, diffopts=None):
"""like the vanilla fctx.annotate, but do it via fastannotate, and make
the output format compatible with the vanilla fctx.annotate.
may raise Exception, and always return line numbers.
"""
master = _getmaster(fctx)
with context.fctxannotatecontext(fctx, follow, diffopts) as ac:
try:
annotated, contents = ac.annotate(
fctx.rev(), master=master, showpath=True, showlines=True
)
except Exception:
ac.rebuild() # try rebuild once
fctx._repo.ui.debug(
b'fastannotate: %s: rebuilding broken cache\n' % fctx._path
)
try:
annotated, contents = ac.annotate(
fctx.rev(), master=master, showpath=True, showlines=True
)
except Exception:
raise
assert annotated and contents
return _convertoutputs(fctx._repo, annotated, contents)
def _hgwebannotate(orig, fctx, ui):
diffopts = patch.difffeatureopts(
ui, untrusted=True, section=b'annotate', whitespace=True
)
return _doannotate(fctx, diffopts=diffopts)
def _fctxannotate(
orig, self, follow=False, linenumber=False, skiprevs=None, diffopts=None
):
if skiprevs:
# skiprevs is not supported yet
return orig(
self, follow, linenumber, skiprevs=skiprevs, diffopts=diffopts
)
try:
return _doannotate(self, follow, diffopts)
except Exception as ex:
self._repo.ui.debug(
b'fastannotate: falling back to the vanilla annotate: %r\n' % ex
)
return orig(self, follow=follow, skiprevs=skiprevs, diffopts=diffopts)
def _remotefctxannotate(orig, self, follow=False, skiprevs=None, diffopts=None):
# skipset: a set-like used to test if a fctx needs to be downloaded
with context.fctxannotatecontext(self, follow, diffopts) as ac:
skipset = revmap.revmap(ac.revmappath)
return orig(
self, follow, skiprevs=skiprevs, diffopts=diffopts, prefetchskip=skipset
)
def replacehgwebannotate():
extensions.wrapfunction(hgweb.webutil, b'annotate', _hgwebannotate)
def replacefctxannotate():
extensions.wrapfunction(hgcontext.basefilectx, b'annotate', _fctxannotate)