obsolete: skip 'changectx' usage in unstable computation
We simplify the unstable computation code, skipping the expensive creation of
changectx object. We focus on efficient set operation and revnumber centric
functions.
In my mercurial development repository, this provides a 3x speedup to the
function:
before: 5.319 ms
after: 1.844 ms
repo details:
total changesets: 40886
obsolete changesets: 7756
mutable (not obsolete): 293
unstable: 30
#!/usr/bin/env python
#
# checkseclevel - checking section title levels in each online help document
from __future__ import absolute_import
import optparse
import os
import sys
# import from the live mercurial repo
os.environ['HGMODULEPOLICY'] = 'py'
sys.path.insert(0, "..")
from mercurial import demandimport; demandimport.enable()
from mercurial import (
commands,
extensions,
help,
minirst,
ui as uimod,
)
table = commands.table
helptable = help.helptable
level2mark = [b'"', b'=', b'-', b'.', b'#']
reservedmarks = [b'"']
mark2level = {}
for m, l in zip(level2mark, range(len(level2mark))):
if m not in reservedmarks:
mark2level[m] = l
initlevel_topic = 0
initlevel_cmd = 1
initlevel_ext = 1
initlevel_ext_cmd = 3
def showavailables(ui, initlevel):
avail = (' available marks and order of them in this help: %s\n') % (
', '.join(['%r' % (m * 4) for m in level2mark[initlevel + 1:]]))
ui.warn(avail.encode('utf-8'))
def checkseclevel(ui, doc, name, initlevel):
ui.note(('checking "%s"\n') % name)
if not isinstance(doc, bytes):
doc = doc.encode('utf-8')
blocks, pruned = minirst.parse(doc, 0, ['verbose'])
errorcnt = 0
curlevel = initlevel
for block in blocks:
if block[b'type'] != b'section':
continue
mark = block[b'underline']
title = block[b'lines'][0]
if (mark not in mark2level) or (mark2level[mark] <= initlevel):
ui.warn((('invalid section mark %r for "%s" of %s\n') %
(mark * 4, title, name)).encode('utf-8'))
showavailables(ui, initlevel)
errorcnt += 1
continue
nextlevel = mark2level[mark]
if curlevel < nextlevel and curlevel + 1 != nextlevel:
ui.warn(('gap of section level at "%s" of %s\n') %
(title, name))
showavailables(ui, initlevel)
errorcnt += 1
continue
ui.note(('appropriate section level for "%s %s"\n') %
(mark * (nextlevel * 2), title))
curlevel = nextlevel
return errorcnt
def checkcmdtable(ui, cmdtable, namefmt, initlevel):
errorcnt = 0
for k, entry in cmdtable.items():
name = k.split(b"|")[0].lstrip(b"^")
if not entry[0].__doc__:
ui.note(('skip checking %s: no help document\n') %
(namefmt % name))
continue
errorcnt += checkseclevel(ui, entry[0].__doc__,
namefmt % name,
initlevel)
return errorcnt
def checkhghelps(ui):
errorcnt = 0
for names, sec, doc in helptable:
if callable(doc):
doc = doc(ui)
errorcnt += checkseclevel(ui, doc,
'%s help topic' % names[0],
initlevel_topic)
errorcnt += checkcmdtable(ui, table, '%s command', initlevel_cmd)
for name in sorted(list(extensions.enabled()) +
list(extensions.disabled())):
mod = extensions.load(ui, name, None)
if not mod.__doc__:
ui.note(('skip checking %s extension: no help document\n') % name)
continue
errorcnt += checkseclevel(ui, mod.__doc__,
'%s extension' % name,
initlevel_ext)
cmdtable = getattr(mod, 'cmdtable', None)
if cmdtable:
errorcnt += checkcmdtable(ui, cmdtable,
'%%s command of %s extension' % name,
initlevel_ext_cmd)
return errorcnt
def checkfile(ui, filename, initlevel):
if filename == '-':
filename = 'stdin'
doc = sys.stdin.read()
else:
with open(filename) as fp:
doc = fp.read()
ui.note(('checking input from %s with initlevel %d\n') %
(filename, initlevel))
return checkseclevel(ui, doc, 'input from %s' % filename, initlevel)
def main():
optparser = optparse.OptionParser("""%prog [options]
This checks all help documents of Mercurial (topics, commands,
extensions and commands of them), if no file is specified by --file
option.
""")
optparser.add_option("-v", "--verbose",
help="enable additional output",
action="store_true")
optparser.add_option("-d", "--debug",
help="debug mode",
action="store_true")
optparser.add_option("-f", "--file",
help="filename to read in (or '-' for stdin)",
action="store", default="")
optparser.add_option("-t", "--topic",
help="parse file as help topic",
action="store_const", dest="initlevel", const=0)
optparser.add_option("-c", "--command",
help="parse file as help of core command",
action="store_const", dest="initlevel", const=1)
optparser.add_option("-e", "--extension",
help="parse file as help of extension",
action="store_const", dest="initlevel", const=1)
optparser.add_option("-C", "--extension-command",
help="parse file as help of extension command",
action="store_const", dest="initlevel", const=3)
optparser.add_option("-l", "--initlevel",
help="set initial section level manually",
action="store", type="int", default=0)
(options, args) = optparser.parse_args()
ui = uimod.ui.load()
ui.setconfig('ui', 'verbose', options.verbose, '--verbose')
ui.setconfig('ui', 'debug', options.debug, '--debug')
if options.file:
if checkfile(ui, options.file, options.initlevel):
sys.exit(1)
else:
if checkhghelps(ui):
sys.exit(1)
if __name__ == "__main__":
main()