From 1b035ed19b1f5946510c5f789faa2687e5135d88 Mon Sep 17 00:00:00 2001
From: yanyongyu <yanyongyu_1@126.com>
Date: Mon, 10 Jan 2022 22:24:45 +0800
Subject: [PATCH] :fire: add State() deprecation warning

---
 nonebot/params.py | 14 +++++++++++++-
 1 file changed, 13 insertions(+), 1 deletion(-)

diff --git a/nonebot/params.py b/nonebot/params.py
index 2563d9a9..bf6547ef 100644
--- a/nonebot/params.py
+++ b/nonebot/params.py
@@ -1,5 +1,6 @@
 import asyncio
 import inspect
+import warnings
 from typing_extensions import Literal
 from typing import Any, Dict, List, Tuple, Callable, Optional, cast
 from contextlib import AsyncExitStack, contextmanager, asynccontextmanager
@@ -278,12 +279,23 @@ def EventToMe() -> bool:
     return Depends(_event_to_me)
 
 
+class StateInner(T_State):
+    ...
+
+
+def State() -> T_State:
+    warnings.warn("State() is deprecated, use T_State instead", DeprecationWarning)
+    return StateInner()
+
+
 class StateParam(Param):
     @classmethod
     def _check_param(
         cls, dependent: Dependent, name: str, param: inspect.Parameter
     ) -> Optional["StateParam"]:
-        if param.default == param.empty:
+        if isinstance(param.default, StateInner):
+            return cls(Required)
+        elif param.default == param.empty:
             if param.annotation is T_State:
                 return cls(Required)
             elif param.annotation == param.empty and name == "state":