chore: import upstream snapshot with attribution

2026-07-13 12:47:58 +08:00
commit b16403ea71
789 changed files with 115226 additions and 0 deletions
@@ -0,0 +1,34 @@
+from typing import TypeVar, Any, Generic, cast, Optional, Type
+import functools
+
+T = TypeVar("T")
+
+
+class class_method_variant(Generic[T]):
+    def __init__(self, class_method_name):
+        self.class_method_name = class_method_name
+
+    method: Any
+
+    def __call__(self, method: T) -> T:
+        self.method = method
+        return cast(T, self)
+
+    def __get__(self, obj, objtype: Optional[Type[Any]] = None):
+        @functools.wraps(self.method)
+        def _wrapper(*args, **kwargs):
+            if obj is not None:
+                # Method was called as an instance method, e.g.
+                # instance.method(...)
+                return self.method(obj, *args, **kwargs)
+            elif len(args) > 0 and objtype is not None and isinstance(args[0], objtype):
+                # Method was called as a class method with the instance as the
+                # first argument, e.g. Class.method(instance, ...) which in
+                # Python is the same thing as calling an instance method
+                return self.method(args[0], *args[1:], **kwargs)
+            else:
+                # Method was called as a class method, e.g. Class.method(...)
+                class_method = getattr(objtype, self.class_method_name)
+                return class_method(*args, **kwargs)
+
+        return _wrapper