[clang] [libclang/python] Add typing annotations for the Cursor class (PR #138103)

[Vlad Serebrennikov via cfe-commits]

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@@ -1552,68 +1553,85 @@ class Cursor(Structure):
 
     _fields_ = [("_kind_id", c_int), ("xdata", c_int), ("data", c_void_p * 3)]
 
+    _tu: TranslationUnit
+
+    # This ensures that no operations are possible on null cursors
+    # by guarding all method calls with a not-null assert
+    def __getattribute__(self, key: str) -> object:
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Endilll wrote:

I understand what do you here, but I'm not sure I like the cleverness and non-locality relative to the methods that are affected. Do you insist on doing it this way instead of adding an assert to every method that needs it?

https://github.com/llvm/llvm-project/pull/138103