Feature: 跳过部分非必要的 task group 创建

nonebot/dependencies/__init__.py

@@ -182,13 +182,17 @@ def parse(
         return cls(call, params, parameterless_params)
 
     async def check(self, **params: Any) -> None:
-        async with anyio.create_task_group() as tg:
-            for param in self.parameterless:
-                tg.start_soon(partial(param._check, **params))
-
-        async with anyio.create_task_group() as tg:
-            for param in self.params:
-                tg.start_soon(partial(cast(Param, param.field_info)._check, **params))
+        if self.parameterless:
+            async with anyio.create_task_group() as tg:
+                for param in self.parameterless:
+                    tg.start_soon(partial(param._check, **params))
+
+        if self.params:
+            async with anyio.create_task_group() as tg:
+                for param in self.params:
+                    tg.start_soon(
+                        partial(cast(Param, param.field_info)._check, **params)
+                    )
 
     async def _solve_field(self, field: ModelField, params: dict[str, Any]) -> Any:
         param = cast(Param, field.field_info)
@@ -205,6 +209,8 @@ async def solve(self, **params: Any) -> dict[str, Any]:
 
         # solve param values
         result: dict[str, Any] = {}
+        if not self.params:
+            return result
 
         async def _solve_field(field: ModelField, params: dict[str, Any]) -> None:
             value = await self._solve_field(field, params)

nonebot/internal/driver/abstract.py

@@ -158,6 +158,9 @@ def _bot_connect(self, bot: "Bot") -> None:
             raise RuntimeError(f"Duplicate bot connection with id {bot.self_id}")
         self._bots[bot.self_id] = bot
 
+        if not self._bot_connection_hook:
+            return
+
         def handle_exception(exc_group: BaseExceptionGroup) -> None:
             for exc in flatten_exception_group(exc_group):
                 logger.opt(colors=True, exception=exc).error(
@@ -186,6 +189,9 @@ def _bot_disconnect(self, bot: "Bot") -> None:
         if bot.self_id in self._bots:
             del self._bots[bot.self_id]
 
+        if not self._bot_disconnection_hook:
+            return
+
         def handle_exception(exc_group: BaseExceptionGroup) -> None:
             for exc in flatten_exception_group(exc_group):
                 logger.opt(colors=True, exception=exc).error(