23 lines
513 B
23 lines
513 B
from collections.abc import Callable
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from functools import lru_cache
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from typing import TypeVar
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_RT = TypeVar("_RT")
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class Freezable:
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_frozen: bool = False
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def freeze(self):
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if not self._frozen:
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self._frozen = True
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def __setattr__(self, *args, **kwargs):
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if self._frozen:
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raise Exception("cannot modify frozen object")
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super().__setattr__(*args, **kwargs)
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def cache(user_function: Callable[..., _RT], /) -> Callable[..., _RT]:
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return lru_cache(maxsize=None)(user_function)
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