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45 lines
1.1 KiB
Python
45 lines
1.1 KiB
Python
from typing import TYPE_CHECKING, 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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@overload
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def combine_driver(driver: type[D]) -> type[D]: ...
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@overload
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def combine_driver(
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driver: type[D], __m: type[Mixin], /, *mixins: type[Mixin]
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) -> type["CombinedDriver"]: ...
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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) # type: ignore
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+ "+"
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+ "+".join(x.type.__get__(self) for x in mixins) # type: ignore
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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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