Replace int with SupportsIndex in indexing methods hints

Author: honno

Diff for: src/array_api_stubs/_draft/array_object.py

@@ -2,6 +2,7 @@
 
 __all__ = ["array"]
 
+from typing import SupportsIndex
 from ._types import (
     array,
     dtype as Dtype,
@@ -604,11 +605,11 @@ def __ge__(self: array, other: Union[int, float, array], /) -> array:
     def __getitem__(
         self: array,
         key: Union[
-            int,
+            SupportsIndex,
             slice,
             ellipsis,
             None,
-            Tuple[Union[int, slice, ellipsis, None], ...],
+            Tuple[Union[SupportsIndex, slice, ellipsis, None], ...],
             array,
         ],
         /,
@@ -620,9 +621,13 @@ def __getitem__(
         ----------
         self: array
             array instance.
-        key: Union[int, slice, ellipsis, None, Tuple[Union[int, slice, ellipsis, None], ...], array]
+        key: Union[SupportsIndex, slice, ellipsis, None, Tuple[Union[SupportsIndex, slice, ellipsis, None], ...], array]
             index key.
 
+
+        .. note::
+           ``key`` can only be an array if it is valid for boolean array indexing, or supports ``__index__()``.
+
         Returns
         -------
         out: array
@@ -1077,7 +1082,7 @@ def __rshift__(self: array, other: Union[int, array], /) -> array:
     def __setitem__(
         self: array,
         key: Union[
-            int, slice, ellipsis, Tuple[Union[int, slice, ellipsis], ...], array
+            SupportsIndex, slice, ellipsis, Tuple[Union[SupportsIndex, slice, ellipsis], ...], array
         ],
         value: Union[int, float, bool, array],
         /,
@@ -1089,11 +1094,13 @@ def __setitem__(
         ----------
         self: array
             array instance.
-        key: Union[int, slice, ellipsis, Tuple[Union[int, slice, ellipsis], ...], array]
+        key: Union[SupportsIndex, slice, ellipsis, Tuple[Union[SupportsIndex, slice, ellipsis], ...], array]
             index key.
         value: Union[int, float, bool, array]
             value(s) to set. Must be compatible with ``self[key]`` (see :ref:`broadcasting`).
 
+        .. note::
+           ``key`` can only be an array if it is valid for boolean array indexing, or supports ``__index__()``.
 
         .. note::