<h2>Edit File: boolquery.py</h2><form method="post"><textarea name="content" rows="20" cols="80"># Copyright 2014-2015, Tresys Technology, LLC
#
# SPDX-License-Identifier: LGPL-2.1-only
#
import logging
from typing import Iterable, Optional

from .descriptors import CriteriaDescriptor
from .mixins import MatchName
from .policyrep import Boolean
from .query import PolicyQuery


class BoolQuery(MatchName, PolicyQuery):

    &quot;&quot;&quot;Query SELinux policy Booleans.

    Parameter:
    policy          The policy to query.

    Keyword Parameters/Class attributes:
    name            The Boolean name to match.
    name_regex      If true, regular expression matching
                    will be used on the Boolean name.
    default         The default state to match.  If this
                    is None, the default state not be matched.
    &quot;&quot;&quot;

    _default: Optional[bool] = None

    @property
    def default(self) -&gt; Optional[bool]:
        return self._default

    @default.setter
    def default(self, value) -&gt; None:
        if value is None:
            self._default = None
        else:
            self._default = bool(value)

    def __init__(self, policy, **kwargs) -&gt; None:
        super(BoolQuery, self).__init__(policy, **kwargs)
        self.log = logging.getLogger(__name__)

    def results(self) -&gt; Iterable[Boolean]:
        &quot;&quot;&quot;Generator which yields all Booleans matching the criteria.&quot;&quot;&quot;
        self.log.info(&quot;Generating Boolean results from {0.policy}&quot;.format(self))
        self._match_name_debug(self.log)
        self.log.debug(&quot;Default: {0.default}&quot;.format(self))

        for boolean in self.policy.bools():
            if not self._match_name(boolean):
                continue

            if self.default is not None and boolean.state != self.default:
                continue

            yield boolean
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