annotate tests/fakedirstatewritetime.py @ 42194:0da689a60163

fix: allow fixer tools to return metadata in addition to the file content With this change, fixer tools can be configured to output a JSON object that will be parsed and passed to hooks that can be used to print summaries of what code was formatted or perform other post-fixing work. The motivation for this change is to allow parallel executions of a "meta-formatter" tool to report back statistics, which are then aggregated and processed after all formatting has completed. Providing an extensible mechanism inside fix.py is far simpler, and more portable, than trying to make a tool like this communicate through some other channel. Differential Revision: https://phab.mercurial-scm.org/D6167
author Danny Hooper <hooper@google.com>
date Thu, 21 Mar 2019 18:32:45 -0700
parents c6061cadb400
children fdd4d668ceb5
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 # extension to emulate invoking 'dirstate.write()' at the time
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2 # specified by '[fakedirstatewritetime] fakenow', only when
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3 # 'dirstate.write()' is invoked via functions below:
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4 #
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5 # - 'workingctx._poststatusfixup()' (= 'repo.status()')
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6 # - 'committablectx.markcommitted()'
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7
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8 from __future__ import absolute_import
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9
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10 from mercurial import (
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11 context,
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12 dirstate,
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13 extensions,
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14 policy,
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15 registrar,
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16 )
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17 from mercurial.utils import dateutil
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18
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19 configtable = {}
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20 configitem = registrar.configitem(configtable)
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21
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22 configitem(b'fakedirstatewritetime', b'fakenow',
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23 default=None,
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24 )
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25
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26 parsers = policy.importmod(r'parsers')
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27
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28 def pack_dirstate(fakenow, orig, dmap, copymap, pl, now):
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29 # execute what original parsers.pack_dirstate should do actually
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30 # for consistency
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31 actualnow = int(now)
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32 for f, e in dmap.items():
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33 if e[0] == 'n' and e[3] == actualnow:
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34 e = parsers.dirstatetuple(e[0], e[1], e[2], -1)
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35 dmap[f] = e
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36
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37 return orig(dmap, copymap, pl, fakenow)
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38
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39 def fakewrite(ui, func):
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40 # fake "now" of 'pack_dirstate' only if it is invoked while 'func'
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41
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42 fakenow = ui.config(b'fakedirstatewritetime', b'fakenow')
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43 if not fakenow:
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44 # Execute original one, if fakenow isn't configured. This is
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45 # useful to prevent subrepos from executing replaced one,
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46 # because replacing 'parsers.pack_dirstate' is also effective
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47 # in subrepos.
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48 return func()
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49
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50 # parsing 'fakenow' in YYYYmmddHHMM format makes comparison between
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51 # 'fakenow' value and 'touch -t YYYYmmddHHMM' argument easy
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52 fakenow = dateutil.parsedate(fakenow, [b'%Y%m%d%H%M'])[0]
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53
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54 orig_pack_dirstate = parsers.pack_dirstate
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55 orig_dirstate_getfsnow = dirstate._getfsnow
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56 wrapper = lambda *args: pack_dirstate(fakenow, orig_pack_dirstate, *args)
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57
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58 parsers.pack_dirstate = wrapper
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59 dirstate._getfsnow = lambda *args: fakenow
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60 try:
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61 return func()
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62 finally:
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63 parsers.pack_dirstate = orig_pack_dirstate
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64 dirstate._getfsnow = orig_dirstate_getfsnow
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65
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66 def _poststatusfixup(orig, workingctx, status, fixup):
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67 ui = workingctx.repo().ui
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68 return fakewrite(ui, lambda : orig(workingctx, status, fixup))
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69
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70 def markcommitted(orig, committablectx, node):
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71 ui = committablectx.repo().ui
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72 return fakewrite(ui, lambda : orig(committablectx, node))
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73
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74 def extsetup(ui):
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75 extensions.wrapfunction(context.workingctx, '_poststatusfixup',
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76 _poststatusfixup)
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77 extensions.wrapfunction(context.committablectx, 'markcommitted',
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78 markcommitted)