view contrib/dirstatenonnormalcheck.py @ 31261:bd884ef2ee46

context: remove uses of manifest.matches

This removes the uses of manifest.matches in context.py in favor of the new
manifest.diff(match) api. This is part of removing manifest.matches since it is
O(manifest).

To drop the dependency on ctx._manifestmatches(s) we transfer responsibilty for
creating status oriented manifests over to ctx._buildstatusmanifest(s). This
already existed for workingctx, we just need to implement a simple version for
basectx. The old _manifestmatches functionality is basically identical to the
_buildstatusmanifest functionality (minus the matching part), so no behavior
should be lost.

# dirstatenonnormalcheck.py - extension to check the consistency of the
# dirstate's non-normal map
#
# For most operations on dirstate, this extensions checks that the nonnormalset
# contains the right entries.
# It compares the nonnormal file to a nonnormalset built from the map of all
# the files in the dirstate to check that they contain the same files.

from __future__ import absolute_import

from mercurial import (
    dirstate,
    extensions,
)

def nonnormalentries(dmap):
    """Compute nonnormal entries from dirstate's dmap"""
    res = set()
    for f, e in dmap.iteritems():
        if e[0] != 'n' or e[3] == -1:
            res.add(f)
    return res

def checkconsistency(ui, orig, dmap, _nonnormalset, label):
    """Compute nonnormalset from dmap, check that it matches _nonnormalset"""
    nonnormalcomputedmap = nonnormalentries(dmap)
    if _nonnormalset != nonnormalcomputedmap:
        ui.develwarn("%s call to %s\n" % (label, orig), config='dirstate')
        ui.develwarn("inconsistency in nonnormalset\n", config='dirstate')
        ui.develwarn("[nonnormalset] %s\n" % _nonnormalset, config='dirstate')
        ui.develwarn("[map] %s\n" % nonnormalcomputedmap, config='dirstate')

def _checkdirstate(orig, self, arg):
    """Check nonnormal set consistency before and after the call to orig"""
    checkconsistency(self._ui, orig, self._map, self._nonnormalset, "before")
    r = orig(self, arg)
    checkconsistency(self._ui, orig, self._map, self._nonnormalset, "after")
    return r

def extsetup(ui):
    """Wrap functions modifying dirstate to check nonnormalset consistency"""
    dirstatecl = dirstate.dirstate
    devel = ui.configbool('devel', 'all-warnings')
    paranoid = ui.configbool('experimental', 'nonnormalparanoidcheck')
    if devel:
        extensions.wrapfunction(dirstatecl, '_writedirstate', _checkdirstate)
        if paranoid:
            # We don't do all these checks when paranoid is disable as it would
            # make the extension run very slowly on large repos
            extensions.wrapfunction(dirstatecl, 'normallookup', _checkdirstate)
            extensions.wrapfunction(dirstatecl, 'otherparent', _checkdirstate)
            extensions.wrapfunction(dirstatecl, 'normal', _checkdirstate)
            extensions.wrapfunction(dirstatecl, 'write', _checkdirstate)
            extensions.wrapfunction(dirstatecl, 'add', _checkdirstate)
            extensions.wrapfunction(dirstatecl, 'remove', _checkdirstate)
            extensions.wrapfunction(dirstatecl, 'merge', _checkdirstate)
            extensions.wrapfunction(dirstatecl, 'drop', _checkdirstate)