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Fix crash when a filter with loop in definition is defined (#707)

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Fixes #10621
This commit is contained in:
Paul Culley 2018-11-27 19:59:27 -06:00 committed by Sam Manzi
parent b4e5bd9eb2
commit 5ef7739c60
1 changed files with 7 additions and 1 deletions
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8
gramps/gen/filters/rules/_rule.py
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@ -28,9 +28,11 @@ Base class for filter rules.
# Standard Python modules
#
#-------------------------------------------------------------------------
import re
from ...errors import FilterError
from ...const import GRAMPS_LOCALE as glocale
_ = glocale.translation.gettext
import re
#-------------------------------------------------------------------------
#
@ -88,6 +90,10 @@ class Rule:
self.match_substring = self.match_regex
self.prepare(db, user)
self.nrprepare += 1
if self.nrprepare > 20: # more references to a filter than expected
raise FilterError(_("The filter definition contains a loop."),
_("One rule references another which eventually"
" references the first."))
def prepare(self, db, user):
"""prepare so the rule can be executed efficiently"""