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import typing
from typing import Any
from typing import Callable # noqa
from typing import Generic
from typing import overload
from typing import Type
from typing import TypeVar
from typing import Union
from typing_extensions import NotRequired # noqa
from . import compat
_T = TypeVar("_T", bound=Any)
if typing.TYPE_CHECKING or not compat.py38:
from typing_extensions import Literal # noqa F401
from typing_extensions import Protocol # noqa F401
from typing_extensions import TypedDict # noqa F401
else:
from typing import Literal # noqa F401
from typing import Protocol # noqa F401
from typing import TypedDict # noqa F401
if typing.TYPE_CHECKING or not compat.py310:
from typing_extensions import Concatenate # noqa F401
from typing_extensions import ParamSpec # noqa F401
else:
from typing import Concatenate # noqa F401
from typing import ParamSpec # noqa F401
class _TypeToInstance(Generic[_T]):
"""describe a variable that moves between a class and an instance of
that class.
"""
@overload
def __get__(self, instance: None, owner: Any) -> Type[_T]:
...
@overload
def __get__(self, instance: object, owner: Any) -> _T:
...
def __get__(self, instance: object, owner: Any) -> Union[Type[_T], _T]:
...
@overload
def __set__(self, instance: None, value: Type[_T]) -> None:
...
@overload
def __set__(self, instance: object, value: _T) -> None:
...
def __set__(self, instance: object, value: Union[Type[_T], _T]) -> None:
...
class ReadOnlyInstanceDescriptor(Protocol[_T]):
"""protocol representing an instance-only descriptor"""
@overload
def __get__(
self, instance: None, owner: Any
) -> "ReadOnlyInstanceDescriptor[_T]":
...
@overload
def __get__(self, instance: object, owner: Any) -> _T:
...
def __get__(
self, instance: object, owner: Any
) -> Union["ReadOnlyInstanceDescriptor[_T]", _T]:
...
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