Source code for pcapkit.vendor.ipv4.option_class

# -*- coding: utf-8 -*-
"""Option Classes
====================

.. module:: pcapkit.vendor.ipv4.option_class

This module contains the vendor crawler for **Option Classes**,
which is automatically generating :class:`pcapkit.const.ipv4.option_class.OptionClass`.

"""

import collections
import sys
from typing import TYPE_CHECKING

from pcapkit.vendor.default import Vendor

if TYPE_CHECKING:
    from collections import Counter

__all__ = ['OptionClass']

#: Option class registry.
DATA = {
    0: 'control',
    1: 'reserved for future use',
    2: 'debugging and measurement',
    3: 'reserved for future use',
}  # type: dict[int, str]


[docs] class OptionClass(Vendor): """Option Classes""" #: Value limit checker.s FLAG = 'isinstance(value, int) and 0 <= value <= 3' def request(self) -> 'dict[int, str]': # type: ignore[override] # pylint: disable=arguments-differ """Fetch registry data. Returns: Registry data (:data:`~pcapkit.vendor.ipv4.option_class.DATA`). """ return DATA def count(self, data: 'dict[int, str]') -> 'Counter[str]': # type: ignore[override] """Count field records. Args: data: Registry data. Returns: Field recordings. """ return collections.Counter(map(self.safe_name, data.values())) def process(self, data: 'dict[int, str]') -> 'tuple[list[str], list[str]]': # type: ignore[override] """Process registry data. Args: data: Registry data. Returns: Enumeration fields and missing fields. """ enum = [] # type: list[str] miss = [ "return extend_enum(cls, 'Unassigned_%d' % value, value)", ] for code, name in data.items(): renm = self.rename(name, code) # type: ignore[arg-type] enum.append(f"{renm} = {code}".ljust(76)) return enum, miss
if __name__ == '__main__': sys.exit(OptionClass()) # type: ignore[arg-type]