🎨 fix message typing error

nonebot/adapters/_base.py

@@ -233,12 +233,14 @@ class Bot(abc.ABC):
         return func
 
 
-T_Message = TypeVar("T_Message", bound="Message")
-T_MessageSegment = TypeVar("T_MessageSegment", bound="MessageSegment[Message]")
+T = TypeVar("T")
+TMS = TypeVar("TMS")
+TM = TypeVar("TM", bound="Message")
+# TM = TypeVar("TM_co", bound="Message")
 
 
 @dataclass
-class MessageSegment(Mapping, abc.ABC, Generic[T_Message]):
+class MessageSegment(Mapping, abc.ABC, Generic[TM]):
     """消息段基类"""
     type: str
     """
@@ -253,7 +255,7 @@ class MessageSegment(Mapping, abc.ABC, Generic[T_Message]):
 
     @classmethod
     @abc.abstractmethod
-    def get_message_class(cls) -> Type[T_Message]:
+    def get_message_class(cls) -> Type[TM]:
         raise NotImplementedError
 
     @abc.abstractmethod
@@ -264,15 +266,13 @@ class MessageSegment(Mapping, abc.ABC, Generic[T_Message]):
     def __len__(self) -> int:
         return len(str(self))
 
-    def __ne__(self: T_MessageSegment, other: T_MessageSegment) -> bool:
+    def __ne__(self: T, other: T) -> bool:
         return not self == other
 
-    def __add__(self, other: Union[str, Mapping,
-                                   Iterable[Mapping]]) -> T_Message:
+    def __add__(self, other: Union[str, Mapping, Iterable[Mapping]]) -> TM:
         return self.get_message_class()(self) + other
 
-    def __radd__(self, other: Union[str, Mapping,
-                                    Iterable[Mapping]]) -> T_Message:
+    def __radd__(self, other: Union[str, Mapping, Iterable[Mapping]]) -> TM:
         return self.get_message_class()(other) + self
 
     def __getitem__(self, key: str):
@@ -299,7 +299,7 @@ class MessageSegment(Mapping, abc.ABC, Generic[T_Message]):
     def items(self):
         return self.data.items()
 
-    def copy(self: T_MessageSegment) -> T_MessageSegment:
+    def copy(self: T) -> T:
         return deepcopy(self)
 
     @abc.abstractmethod
@@ -307,12 +307,12 @@ class MessageSegment(Mapping, abc.ABC, Generic[T_Message]):
         raise NotImplementedError
 
 
-class Message(List[T_MessageSegment], abc.ABC):
+class Message(List[TMS], abc.ABC):
     """消息数组"""
 
-    def __init__(self: T_Message,
-                 message: Union[str, None, Mapping, Iterable[Mapping],
-                                T_MessageSegment, T_Message, Any] = None,
+    def __init__(self: TM,
+                 message: Union[str, None, Mapping, Iterable[Mapping], TMS, TM,
+                                Any] = None,
                  *args,
                  **kwargs):
         """
@@ -332,7 +332,7 @@ class Message(List[T_MessageSegment], abc.ABC):
 
     @classmethod
     @abc.abstractmethod
-    def get_segment_class(cls) -> Type[T_MessageSegment]:
+    def get_segment_class(cls) -> Type[TMS]:
         raise NotImplementedError
 
     def __str__(self):
@@ -349,29 +349,19 @@ class Message(List[T_MessageSegment], abc.ABC):
     @staticmethod
     @abc.abstractmethod
     def _construct(
-        msg: Union[str, Mapping, Iterable[Mapping], Any]
-    ) -> Iterable[T_MessageSegment]:
+            msg: Union[str, Mapping, Iterable[Mapping], Any]) -> Iterable[TMS]:
         raise NotImplementedError
 
-    def __add__(
-        self: T_Message, other: Union[str, Mapping, Iterable[Mapping],
-                                      T_MessageSegment, T_Message]
-    ) -> T_Message:
+    def __add__(self: TM, other: Union[str, Mapping, Iterable[Mapping]]) -> TM:
         result = self.copy()
         result += other
         return result
 
-    def __radd__(
-        self: T_Message, other: Union[str, Mapping, Iterable[Mapping],
-                                      T_MessageSegment, T_Message]
-    ) -> T_Message:
+    def __radd__(self: TM, other: Union[str, Mapping, Iterable[Mapping]]) -> TM:
         result = self.__class__(other)
         return result + self
 
-    def __iadd__(
-        self: T_Message, other: Union[str, Mapping, Iterable[Mapping],
-                                      T_MessageSegment, T_Message]
-    ) -> T_Message:
+    def __iadd__(self: TM, other: Union[str, Mapping, Iterable[Mapping]]) -> TM:
         if isinstance(other, MessageSegment):
             self.append(other)
         elif isinstance(other, Message):
@@ -380,7 +370,7 @@ class Message(List[T_MessageSegment], abc.ABC):
             self.extend(self._construct(other))
         return self
 
-    def append(self: T_Message, obj: Union[str, T_MessageSegment]) -> T_Message:
+    def append(self: TM, obj: Union[str, TMS]) -> TM:
         """
         :说明:
 
@@ -398,8 +388,7 @@ class Message(List[T_MessageSegment], abc.ABC):
             raise ValueError(f"Unexpected type: {type(obj)} {obj}")
         return self
 
-    def extend(self: T_Message,
-               obj: Union[T_Message, Iterable[T_MessageSegment]]) -> T_Message:
+    def extend(self: TM, obj: Union[TM, Iterable[TMS]]) -> TM:
         """
         :说明:
 
@@ -413,10 +402,10 @@ class Message(List[T_MessageSegment], abc.ABC):
             self.append(segment)
         return self
 
-    def copy(self: T_Message) -> T_Message:
+    def copy(self: TM) -> TM:
         return deepcopy(self)
 
-    def extract_plain_text(self) -> str:
+    def extract_plain_text(self: "Message[MessageSegment]") -> str:
         """
         :说明: