mirror of
https://github.com/PiBrewing/craftbeerpi4.git
synced 2024-09-19 22:07:28 +02:00
72 lines
1.7 KiB
Python
72 lines
1.7 KiB
Python
from collections.abc import MutableSequence
|
|
from functools import total_ordering
|
|
|
|
from .helpers import NO_EXTENSIONS
|
|
|
|
|
|
@total_ordering
|
|
class FrozenList(MutableSequence):
|
|
|
|
__slots__ = ("_frozen", "_items")
|
|
|
|
def __init__(self, items=None):
|
|
self._frozen = False
|
|
if items is not None:
|
|
items = list(items)
|
|
else:
|
|
items = []
|
|
self._items = items
|
|
|
|
@property
|
|
def frozen(self):
|
|
return self._frozen
|
|
|
|
def freeze(self):
|
|
self._frozen = True
|
|
|
|
def __getitem__(self, index):
|
|
return self._items[index]
|
|
|
|
def __setitem__(self, index, value):
|
|
if self._frozen:
|
|
raise RuntimeError("Cannot modify frozen list.")
|
|
self._items[index] = value
|
|
|
|
def __delitem__(self, index):
|
|
if self._frozen:
|
|
raise RuntimeError("Cannot modify frozen list.")
|
|
del self._items[index]
|
|
|
|
def __len__(self):
|
|
return self._items.__len__()
|
|
|
|
def __iter__(self):
|
|
return self._items.__iter__()
|
|
|
|
def __reversed__(self):
|
|
return self._items.__reversed__()
|
|
|
|
def __eq__(self, other):
|
|
return list(self) == other
|
|
|
|
def __le__(self, other):
|
|
return list(self) <= other
|
|
|
|
def insert(self, pos, item):
|
|
if self._frozen:
|
|
raise RuntimeError("Cannot modify frozen list.")
|
|
self._items.insert(pos, item)
|
|
|
|
def __repr__(self):
|
|
return f"<FrozenList(frozen={self._frozen}, {self._items!r})>"
|
|
|
|
|
|
PyFrozenList = FrozenList
|
|
|
|
try:
|
|
from aiohttp._frozenlist import FrozenList as CFrozenList # type: ignore
|
|
|
|
if not NO_EXTENSIONS:
|
|
FrozenList = CFrozenList # type: ignore
|
|
except ImportError: # pragma: no cover
|
|
pass
|