# -*- coding: utf-8 -*-
"""ToS (DS Field) Precedence
===============================
.. module:: pcapkit.vendor.ipv4.tos_pre
This module contains the vendor crawler for **ToS (DS Field) Precedence**,
which is automatically generating :class:`pcapkit.const.ipv4.tos_pre.ToSPrecedence`.
"""
import collections
import sys
from typing import TYPE_CHECKING
from pcapkit.vendor.default import Vendor
if TYPE_CHECKING:
from collections import Counter
__all__ = ['ToSPrecedence']
#: ToS registry.
DATA = {
0b111: 'Network Control',
0b110: 'Internetwork Control',
0b101: 'CRITIC/ECP',
0b100: 'Flash Override',
0b011: 'Flash',
0b010: 'Immediate',
0b001: 'Priority',
0b000: 'Routine',
} # type: dict[int, str]
[docs]
class ToSPrecedence(Vendor):
"""ToS (DS Field) Precedence"""
#: Value limit checker.
FLAG = 'isinstance(value, int) and 0b000 <= value <= 0b111'
def request(self) -> 'dict[int, str]': # type: ignore[override] # pylint: disable=arguments-differ
"""Fetch registry data.
Returns:
Registry data (:data:`~pcapkit.vendor.ipv4.tos_pre.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(ToSPrecedence()) # type: ignore[arg-type]