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bpo-40170: Remove PyIndex_Check() macro #19375

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bpo-40170: Remove PyIndex_Check() macro #19375

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6 changes: 0 additions & 6 deletions Include/cpython/abstract.h
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Expand Up @@ -337,12 +337,6 @@ PyAPI_FUNC(void) PyBuffer_Release(Py_buffer *view);
(Py_TYPE(obj)->tp_iternext != NULL && \
Py_TYPE(obj)->tp_iternext != &_PyObject_NextNotImplemented)

/* === Number Protocol ================================================== */

#define PyIndex_Check(obj) \
(Py_TYPE(obj)->tp_as_number != NULL && \
Py_TYPE(obj)->tp_as_number->nb_index != NULL)

/* === Sequence protocol ================================================ */

/* Assume tp_as_sequence and sq_item exist and that 'i' does not
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3 changes: 3 additions & 0 deletions Misc/NEWS.d/next/C API/2020-04-04-23-51-59.bpo-40170.uXQ701.rst
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@@ -0,0 +1,3 @@
Always declare :c:func:`PyIndex_Check` as an opaque function to hide
implementation details: remove ``PyIndex_Check()`` macro. The macro accessed
directly the :c:member:`PyTypeObject.tp_as_number` member.
6 changes: 3 additions & 3 deletions Objects/abstract.c
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Expand Up @@ -1291,15 +1291,15 @@ PyNumber_Absolute(PyObject *o)
return type_error("bad operand type for abs(): '%.200s'", o);
}

#undef PyIndex_Check

int
PyIndex_Check(PyObject *obj)
{
return Py_TYPE(obj)->tp_as_number != NULL &&
Py_TYPE(obj)->tp_as_number->nb_index != NULL;
PyNumberMethods *tp_as_number = Py_TYPE(obj)->tp_as_number;
return (tp_as_number != NULL && tp_as_number->nb_index != NULL);
}


/* Return a Python int from the object item.
Raise TypeError if the result is not an int
or if the object cannot be interpreted as an index.
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