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46 lines
1.1 KiB
Python
46 lines
1.1 KiB
Python
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from typing import TYPE_CHECKING, Type, Union, TypeVar, overload
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from .abstract import Mixin, Driver
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D = TypeVar("D", bound="Driver")
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if TYPE_CHECKING:
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class CombinedDriver(Driver, Mixin):
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...
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@overload
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def combine_driver(driver: Type[D]) -> Type[D]:
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...
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@overload
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def combine_driver(driver: Type[D], *mixins: Type[Mixin]) -> Type["CombinedDriver"]:
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...
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def combine_driver(
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driver: Type[D], *mixins: Type[Mixin]
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) -> Union[Type[D], Type["CombinedDriver"]]:
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"""将一个驱动器和多个混入类合并。"""
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# check first
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if not issubclass(driver, Driver):
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raise TypeError("`driver` must be subclass of Driver")
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if not all(issubclass(m, Mixin) for m in mixins):
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raise TypeError("`mixins` must be subclass of Mixin")
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if not mixins:
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return driver
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def type_(self: "CombinedDriver") -> str:
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return (
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driver.type.__get__(self)
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+ "+"
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+ "+".join(x.type.__get__(self) for x in mixins)
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)
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return type(
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"CombinedDriver", (*mixins, driver), {"type": property(type_)}
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) # type: ignore
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