<h2>Edit File: pcideviceconquery.py</h2><form method="post"><textarea name="content" rows="20" cols="80"># Derived from portconquery.py
#
# SPDX-License-Identifier: LGPL-2.1-only
#
import logging
from typing import Iterable, Optional

from .mixins import MatchContext
from .policyrep import Pcidevicecon
from .query import PolicyQuery


class PcideviceconQuery(MatchContext, PolicyQuery):

    &quot;&quot;&quot;
    Pcidevicecon context query.

    Parameter:
    policy          The policy to query.

    Keyword Parameters/Class attributes:
    device          A single PCI device ID.

    user            The criteria to match the context&#039;s user.
    user_regex      If true, regular expression matching
                    will be used on the user.

    role            The criteria to match the context&#039;s role.
    role_regex      If true, regular expression matching
                    will be used on the role.

    type_           The criteria to match the context&#039;s type.
    type_regex      If true, regular expression matching
                    will be used on the type.

    range_          The criteria to match the context&#039;s range.
    range_subset    If true, the criteria will match if it is a subset
                    of the context&#039;s range.
    range_overlap   If true, the criteria will match if it overlaps
                    any of the context&#039;s range.
    range_superset  If true, the criteria will match if it is a superset
                    of the context&#039;s range.
    range_proper    If true, use proper superset/subset operations.
                    No effect if not using set operations.
    &quot;&quot;&quot;

    _device: Optional[int] = None

    @property
    def device(self) -&gt; Optional[int]:
        return self._device

    @device.setter
    def device(self, value: Optional[int]) -&gt; None:
        if value:
            if value &lt; 1:
                raise ValueError(&quot;PCI device ID must be positive: {0}&quot;.format(value))

            self._device = value
        else:
            self._device = None

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

    def results(self) -&gt; Iterable[Pcidevicecon]:
        &quot;&quot;&quot;Generator which yields all matching pcidevicecons.&quot;&quot;&quot;
        self.log.info(&quot;Generating results from {0.policy}&quot;.format(self))
        self.log.debug(&quot;Device ID: {0.device!r}&quot;.format(self))
        self._match_context_debug(self.log)

        for pcidevicecon in self.policy.pcidevicecons():

            if self.device and self.device != pcidevicecon.device:
                continue

            if not self._match_context(pcidevicecon.context):
                continue

            yield pcidevicecon
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