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from __future__ import annotations
from contextlib import contextmanager
from typing import Final, Iterator
# These are global mutable state. Don't add anything here unless there's a very
# good reason.
class StrictOptionalState:
# Wrap this in a class since it's faster that using a module-level attribute.
def __init__(self, strict_optional: bool) -> None:
# Value varies by file being processed
self.strict_optional = strict_optional
@contextmanager
def strict_optional_set(self, value: bool) -> Iterator[None]:
saved = self.strict_optional
self.strict_optional = value
try:
yield
finally:
self.strict_optional = saved
state: Final = StrictOptionalState(strict_optional=True)
find_occurrences: tuple[str, str] | None = None
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