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parseinstr: Use typing.NamedTuple

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This commit is contained in:
Alexis Engelke
2020-05-10 14:20:34 +02:00
parent afc574503f
commit da4cbc237f
1 changed files with 11 additions and 4 deletions
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15
parseinstrs.py
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@@ -7,6 +7,7 @@ from copy import copy
from enum import Enum, IntEnum from enum import Enum, IntEnum
from itertools import accumulate, product from itertools import accumulate, product
import struct import struct
from typing import NamedTuple, FrozenSet, List, Tuple, Union, Optional, ByteString
def bitstruct(name, fields): def bitstruct(name, fields):
names, sizes = zip(*(field.split(":") for field in fields)) names, sizes = zip(*(field.split(":") for field in fields))
@@ -110,8 +111,11 @@ OPKIND_LOOKUP = {
"DR": (0, 0, 10), "DR": (0, 0, 10),
} }
class InstrDesc(namedtuple("InstrDesc", "mnemonic,flags,encoding")): class InstrDesc(NamedTuple):
__slots__ = () mnemonic: str
flags: FrozenSet[str]
encoding: bitstruct
@classmethod @classmethod
def parse(cls, desc): def parse(cls, desc):
desc = desc.split() desc = desc.split()
@@ -151,8 +155,11 @@ class EntryKind(Enum):
TABLE_PREFIX_REP = 7 TABLE_PREFIX_REP = 7
TABLE_ROOT = -1 TABLE_ROOT = -1
class TrieEntry(namedtuple("TrieEntry", "kind,items,payload")): class TrieEntry(NamedTuple):
__slots__ = () kind: EntryKind
items: Union[List[Optional[str]], Tuple[Optional[str]]]
payload: ByteString
TABLE_LENGTH = { TABLE_LENGTH = {
EntryKind.TABLE256: 256, EntryKind.TABLE256: 256,
EntryKind.TABLE8: 8, EntryKind.TABLE8: 8,