buffer protocol implementation for BitmaskArray

Author: WillAyd

pandas/_libs/arrays.pyi

@@ -45,12 +45,13 @@ class NDArrayBacked:
 class BitmaskArray:
     parent: Self
     def __init__(self, data: np.ndarray | Self) -> None: ...
+    def __len__(self) -> int: ...
     def __setitem__(self, key: PositionalIndexer, value: ArrayLike | bool) -> None: ...
     def __getitem__(self, key: PositionalIndexer) -> bool: ...
     def __invert__(self) -> Self: ...
-    def __and__(self, other: np.ndarray | Self) -> np.ndarray: ...
-    def __or__(self, other: np.ndarray | Self) -> np.ndarray: ...
-    def __xor__(self, other: np.ndarray | Self) -> np.ndarray: ...
+    def __and__(self, other: np.ndarray | Self | bool) -> np.ndarray: ...
+    def __or__(self, other: np.ndarray | Self | bool) -> np.ndarray: ...
+    def __xor__(self, other: np.ndarray | Self | bool) -> np.ndarray: ...
     def __getstate__(self) -> dict: ...
     def __setstate__(self, other: dict) -> None: ...
     def __iter__(self): ...