gh-89653: PEP 670: Macros always cast arguments in cpython/ (#93766)

Header files in the Include/cpython/ are only included if
the Py_LIMITED_API macro is not defined.

Author: vstinner

Include/cpython/bytearrayobject.h

@@ -25,14 +25,10 @@ static inline char* PyByteArray_AS_STRING(PyObject *op)
     }
     return _PyByteArray_empty_string;
 }
-#if !defined(Py_LIMITED_API) || Py_LIMITED_API+0 < 0x030b0000
-#  define PyByteArray_AS_STRING(self) PyByteArray_AS_STRING(_PyObject_CAST(self))
-#endif
+#define PyByteArray_AS_STRING(self) PyByteArray_AS_STRING(_PyObject_CAST(self))
 
 static inline Py_ssize_t PyByteArray_GET_SIZE(PyObject *op) {
     PyByteArrayObject *self = _PyByteArray_CAST(op);
     return Py_SIZE(self);
 }
-#if !defined(Py_LIMITED_API) || Py_LIMITED_API+0 < 0x030b0000
-#  define PyByteArray_GET_SIZE(self) PyByteArray_GET_SIZE(_PyObject_CAST(self))
-#endif
+#define PyByteArray_GET_SIZE(self) PyByteArray_GET_SIZE(_PyObject_CAST(self))

Include/cpython/bytesobject.h

@@ -36,17 +36,13 @@ static inline char* PyBytes_AS_STRING(PyObject *op)
 {
     return _PyBytes_CAST(op)->ob_sval;
 }
-#if !defined(Py_LIMITED_API) || Py_LIMITED_API+0 < 0x030b0000
-#  define PyBytes_AS_STRING(op) PyBytes_AS_STRING(_PyObject_CAST(op))
-#endif
+#define PyBytes_AS_STRING(op) PyBytes_AS_STRING(_PyObject_CAST(op))
 
 static inline Py_ssize_t PyBytes_GET_SIZE(PyObject *op) {
     PyBytesObject *self = _PyBytes_CAST(op);
     return Py_SIZE(self);
 }
-#if !defined(Py_LIMITED_API) || Py_LIMITED_API+0 < 0x030b0000
-#  define PyBytes_GET_SIZE(self) PyBytes_GET_SIZE(_PyObject_CAST(self))
-#endif
+#define PyBytes_GET_SIZE(self) PyBytes_GET_SIZE(_PyObject_CAST(self))
 
 /* _PyBytes_Join(sep, x) is like sep.join(x).  sep must be PyBytesObject*,
    x must be an iterable object. */

Include/cpython/cellobject.h

@@ -27,19 +27,15 @@ static inline PyObject* PyCell_GET(PyObject *op) {
     cell = _Py_CAST(PyCellObject*, op);
     return cell->ob_ref;
 }
-#if !defined(Py_LIMITED_API) || Py_LIMITED_API+0 < 0x030c0000
-#  define PyCell_GET(op) PyCell_GET(_PyObject_CAST(op))
-#endif
+#define PyCell_GET(op) PyCell_GET(_PyObject_CAST(op))
 
 static inline void PyCell_SET(PyObject *op, PyObject *value) {
     PyCellObject *cell;
     assert(PyCell_Check(op));
     cell = _Py_CAST(PyCellObject*, op);
     cell->ob_ref = value;
 }
-#if !defined(Py_LIMITED_API) || Py_LIMITED_API+0 < 0x030c0000
-#  define PyCell_SET(op, value) PyCell_SET(_PyObject_CAST(op), (value))
-#endif
+#define PyCell_SET(op, value) PyCell_SET(_PyObject_CAST(op), (value))
 
 #ifdef __cplusplus
 }

Include/cpython/dictobject.h

@@ -52,9 +52,7 @@ static inline Py_ssize_t PyDict_GET_SIZE(PyObject *op) {
     mp = _Py_CAST(PyDictObject*, op);
     return mp->ma_used;
 }
-#if !defined(Py_LIMITED_API) || Py_LIMITED_API+0 < 0x030c0000
-#  define PyDict_GET_SIZE(op) PyDict_GET_SIZE(_PyObject_CAST(op))
-#endif
+#define PyDict_GET_SIZE(op) PyDict_GET_SIZE(_PyObject_CAST(op))
 
 PyAPI_FUNC(int) _PyDict_Contains_KnownHash(PyObject *, PyObject *, Py_hash_t);
 PyAPI_FUNC(int) _PyDict_ContainsId(PyObject *, _Py_Identifier *);

Include/cpython/listobject.h

@@ -34,9 +34,7 @@ static inline Py_ssize_t PyList_GET_SIZE(PyObject *op) {
     PyListObject *list = _PyList_CAST(op);
     return Py_SIZE(list);
 }
-#if !defined(Py_LIMITED_API) || Py_LIMITED_API+0 < 0x030b0000
-#  define PyList_GET_SIZE(op) PyList_GET_SIZE(_PyObject_CAST(op))
-#endif
+#define PyList_GET_SIZE(op) PyList_GET_SIZE(_PyObject_CAST(op))
 
 #define PyList_GET_ITEM(op, index) (_PyList_CAST(op)->ob_item[index])
 
@@ -45,7 +43,5 @@ PyList_SET_ITEM(PyObject *op, Py_ssize_t index, PyObject *value) {
     PyListObject *list = _PyList_CAST(op);
     list->ob_item[index] = value;
 }
-#if !defined(Py_LIMITED_API) || Py_LIMITED_API+0 < 0x030b0000
 #define PyList_SET_ITEM(op, index, value) \
     PyList_SET_ITEM(_PyObject_CAST(op), index, _PyObject_CAST(value))
-#endif

Include/cpython/methodobject.h

@@ -40,9 +40,7 @@ PyAPI_DATA(PyTypeObject) PyCMethod_Type;
 static inline PyCFunction PyCFunction_GET_FUNCTION(PyObject *func) {
     return _PyCFunctionObject_CAST(func)->m_ml->ml_meth;
 }
-#if !defined(Py_LIMITED_API) || Py_LIMITED_API+0 < 0x030b0000
-#  define PyCFunction_GET_FUNCTION(func) PyCFunction_GET_FUNCTION(_PyObject_CAST(func))
-#endif
+#define PyCFunction_GET_FUNCTION(func) PyCFunction_GET_FUNCTION(_PyObject_CAST(func))
 
 static inline PyObject* PyCFunction_GET_SELF(PyObject *func_obj) {
     PyCFunctionObject *func = _PyCFunctionObject_CAST(func_obj);
@@ -51,16 +49,12 @@ static inline PyObject* PyCFunction_GET_SELF(PyObject *func_obj) {
     }
     return func->m_self;
 }
-#if !defined(Py_LIMITED_API) || Py_LIMITED_API+0 < 0x030b0000
-#  define PyCFunction_GET_SELF(func) PyCFunction_GET_SELF(_PyObject_CAST(func))
-#endif
+#define PyCFunction_GET_SELF(func) PyCFunction_GET_SELF(_PyObject_CAST(func))
 
 static inline int PyCFunction_GET_FLAGS(PyObject *func) {
     return _PyCFunctionObject_CAST(func)->m_ml->ml_flags;
 }
-#if !defined(Py_LIMITED_API) || Py_LIMITED_API+0 < 0x030b0000
-#  define PyCFunction_GET_FLAGS(func) PyCFunction_GET_FLAGS(_PyObject_CAST(func))
-#endif
+#define PyCFunction_GET_FLAGS(func) PyCFunction_GET_FLAGS(_PyObject_CAST(func))
 
 static inline PyTypeObject* PyCFunction_GET_CLASS(PyObject *func_obj) {
     PyCFunctionObject *func = _PyCFunctionObject_CAST(func_obj);
@@ -69,6 +63,4 @@ static inline PyTypeObject* PyCFunction_GET_CLASS(PyObject *func_obj) {
     }
     return _Py_NULL;
 }
-#if !defined(Py_LIMITED_API) || Py_LIMITED_API+0 < 0x030b0000
-#  define PyCFunction_GET_CLASS(func) PyCFunction_GET_CLASS(_PyObject_CAST(func))
-#endif
+#define PyCFunction_GET_CLASS(func) PyCFunction_GET_CLASS(_PyObject_CAST(func))

Include/cpython/tupleobject.h

@@ -23,9 +23,7 @@ static inline Py_ssize_t PyTuple_GET_SIZE(PyObject *op) {
     PyTupleObject *tuple = _PyTuple_CAST(op);
     return Py_SIZE(tuple);
 }
-#if !defined(Py_LIMITED_API) || Py_LIMITED_API+0 < 0x030b0000
-#  define PyTuple_GET_SIZE(op) PyTuple_GET_SIZE(_PyObject_CAST(op))
-#endif
+#define PyTuple_GET_SIZE(op) PyTuple_GET_SIZE(_PyObject_CAST(op))
 
 #define PyTuple_GET_ITEM(op, index) (_PyTuple_CAST(op)->ob_item[index])
 
@@ -35,9 +33,7 @@ PyTuple_SET_ITEM(PyObject *op, Py_ssize_t index, PyObject *value) {
     PyTupleObject *tuple = _PyTuple_CAST(op);
     tuple->ob_item[index] = value;
 }
-#if !defined(Py_LIMITED_API) || Py_LIMITED_API+0 < 0x030b0000
 #define PyTuple_SET_ITEM(op, index, value) \
     PyTuple_SET_ITEM(_PyObject_CAST(op), index, _PyObject_CAST(value))
-#endif
 
 PyAPI_FUNC(void) _PyTuple_DebugMallocStats(FILE *out);

Include/cpython/unicodeobject.h

@@ -188,45 +188,35 @@ PyAPI_FUNC(int) _PyUnicode_CheckConsistency(
 static inline unsigned int PyUnicode_CHECK_INTERNED(PyObject *op) {
     return _PyASCIIObject_CAST(op)->state.interned;
 }
-#if !defined(Py_LIMITED_API) || Py_LIMITED_API+0 < 0x030b0000
-#  define PyUnicode_CHECK_INTERNED(op) PyUnicode_CHECK_INTERNED(_PyObject_CAST(op))
-#endif
+#define PyUnicode_CHECK_INTERNED(op) PyUnicode_CHECK_INTERNED(_PyObject_CAST(op))
 
 /* For backward compatibility */
 static inline unsigned int PyUnicode_IS_READY(PyObject* Py_UNUSED(op)) {
     return 1;
 }
-#if !defined(Py_LIMITED_API) || Py_LIMITED_API+0 < 0x030b0000
-#  define PyUnicode_IS_READY(op) PyUnicode_IS_READY(_PyObject_CAST(op))
-#endif
+#define PyUnicode_IS_READY(op) PyUnicode_IS_READY(_PyObject_CAST(op))
 
 /* Return true if the string contains only ASCII characters, or 0 if not. The
    string may be compact (PyUnicode_IS_COMPACT_ASCII) or not, but must be
    ready. */
 static inline unsigned int PyUnicode_IS_ASCII(PyObject *op) {
     return _PyASCIIObject_CAST(op)->state.ascii;
 }
-#if !defined(Py_LIMITED_API) || Py_LIMITED_API+0 < 0x030b0000
-#  define PyUnicode_IS_ASCII(op) PyUnicode_IS_ASCII(_PyObject_CAST(op))
-#endif
+#define PyUnicode_IS_ASCII(op) PyUnicode_IS_ASCII(_PyObject_CAST(op))
 
 /* Return true if the string is compact or 0 if not.
    No type checks or Ready calls are performed. */
 static inline unsigned int PyUnicode_IS_COMPACT(PyObject *op) {
     return _PyASCIIObject_CAST(op)->state.compact;
 }
-#if !defined(Py_LIMITED_API) || Py_LIMITED_API+0 < 0x030b0000
-#  define PyUnicode_IS_COMPACT(op) PyUnicode_IS_COMPACT(_PyObject_CAST(op))
-#endif
+#define PyUnicode_IS_COMPACT(op) PyUnicode_IS_COMPACT(_PyObject_CAST(op))
 
 /* Return true if the string is a compact ASCII string (use PyASCIIObject
    structure), or 0 if not.  No type checks or Ready calls are performed. */
 static inline int PyUnicode_IS_COMPACT_ASCII(PyObject *op) {
     return (_PyASCIIObject_CAST(op)->state.ascii && PyUnicode_IS_COMPACT(op));
 }
-#if !defined(Py_LIMITED_API) || Py_LIMITED_API+0 < 0x030b0000
-#  define PyUnicode_IS_COMPACT_ASCII(op) PyUnicode_IS_COMPACT_ASCII(_PyObject_CAST(op))
-#endif
+#define PyUnicode_IS_COMPACT_ASCII(op) PyUnicode_IS_COMPACT_ASCII(_PyObject_CAST(op))
 
 enum PyUnicode_Kind {
 /* Return values of the PyUnicode_KIND() function: */
@@ -236,22 +226,14 @@ enum PyUnicode_Kind {
 };
 
 // PyUnicode_KIND(): Return one of the PyUnicode_*_KIND values defined above.
-#if !defined(Py_LIMITED_API) || Py_LIMITED_API+0 < 0x030c0000
+//
 // gh-89653: Converting this macro to a static inline function would introduce
 // new compiler warnings on "kind < PyUnicode_KIND(str)" (compare signed and
 // unsigned numbers) where kind type is an int or on
 // "unsigned int kind = PyUnicode_KIND(str)" (cast signed to unsigned).
 // Only declare the function as static inline function in the limited C API
 // version 3.12 which is stricter.
-#define PyUnicode_KIND(op) \
-    (_PyASCIIObject_CAST(op)->state.kind)
-#else
-// Limited C API 3.12 and newer
-static inline int PyUnicode_KIND(PyObject *op) {
-    assert(PyUnicode_IS_READY(op));
-    return _PyASCIIObject_CAST(op)->state.kind;
-}
-#endif
+#define PyUnicode_KIND(op) (_PyASCIIObject_CAST(op)->state.kind)
 
 /* Return a void pointer to the raw unicode buffer. */
 static inline void* _PyUnicode_COMPACT_DATA(PyObject *op) {
@@ -275,9 +257,7 @@ static inline void* PyUnicode_DATA(PyObject *op) {
     }
     return _PyUnicode_NONCOMPACT_DATA(op);
 }
-#if !defined(Py_LIMITED_API) || Py_LIMITED_API+0 < 0x030b0000
-#  define PyUnicode_DATA(op) PyUnicode_DATA(_PyObject_CAST(op))
-#endif
+#define PyUnicode_DATA(op) PyUnicode_DATA(_PyObject_CAST(op))
 
 /* Return pointers to the canonical representation cast to unsigned char,
    Py_UCS2, or Py_UCS4 for direct character access.
@@ -292,9 +272,7 @@ static inline void* PyUnicode_DATA(PyObject *op) {
 static inline Py_ssize_t PyUnicode_GET_LENGTH(PyObject *op) {
     return _PyASCIIObject_CAST(op)->length;
 }
-#if !defined(Py_LIMITED_API) || Py_LIMITED_API+0 < 0x030b0000
-#  define PyUnicode_GET_LENGTH(op) PyUnicode_GET_LENGTH(_PyObject_CAST(op))
-#endif
+#define PyUnicode_GET_LENGTH(op) PyUnicode_GET_LENGTH(_PyObject_CAST(op))
 
 /* Write into the canonical representation, this function does not do any sanity
    checks and is intended for usage in loops.  The caller should cache the
@@ -319,11 +297,9 @@ static inline void PyUnicode_WRITE(int kind, void *data,
         _Py_STATIC_CAST(Py_UCS4*, data)[index] = value;
     }
 }
-#if !defined(Py_LIMITED_API) || Py_LIMITED_API+0 < 0x030b0000
 #define PyUnicode_WRITE(kind, data, index, value) \
     PyUnicode_WRITE(_Py_STATIC_CAST(int, kind), _Py_CAST(void*, data), \
                     (index), _Py_STATIC_CAST(Py_UCS4, value))
-#endif
 
 /* Read a code point from the string's canonical representation.  No checks
    or ready calls are performed. */
@@ -340,12 +316,10 @@ static inline Py_UCS4 PyUnicode_READ(int kind,
     assert(kind == PyUnicode_4BYTE_KIND);
     return _Py_STATIC_CAST(const Py_UCS4*, data)[index];
 }
-#if !defined(Py_LIMITED_API) || Py_LIMITED_API+0 < 0x030b0000
 #define PyUnicode_READ(kind, data, index) \
     PyUnicode_READ(_Py_STATIC_CAST(int, kind), \
                    _Py_STATIC_CAST(const void*, data), \
                    (index))
-#endif
 
 /* PyUnicode_READ_CHAR() is less efficient than PyUnicode_READ() because it
    calls PyUnicode_KIND() and might call it twice.  For single reads, use
@@ -369,10 +343,8 @@ static inline Py_UCS4 PyUnicode_READ_CHAR(PyObject *unicode, Py_ssize_t index)
     assert(kind == PyUnicode_4BYTE_KIND);
     return PyUnicode_4BYTE_DATA(unicode)[index];
 }
-#if !defined(Py_LIMITED_API) || Py_LIMITED_API+0 < 0x030b0000
-#  define PyUnicode_READ_CHAR(unicode, index) \
-       PyUnicode_READ_CHAR(_PyObject_CAST(unicode), (index))
-#endif
+#define PyUnicode_READ_CHAR(unicode, index) \
+    PyUnicode_READ_CHAR(_PyObject_CAST(unicode), (index))
 
 /* Return a maximum character value which is suitable for creating another
    string based on op.  This is always an approximation but more efficient
@@ -395,10 +367,8 @@ static inline Py_UCS4 PyUnicode_MAX_CHAR_VALUE(PyObject *op)
     assert(kind == PyUnicode_4BYTE_KIND);
     return 0x10ffffU;
 }
-#if !defined(Py_LIMITED_API) || Py_LIMITED_API+0 < 0x030b0000
-#  define PyUnicode_MAX_CHAR_VALUE(op) \
-       PyUnicode_MAX_CHAR_VALUE(_PyObject_CAST(op))
-#endif
+#define PyUnicode_MAX_CHAR_VALUE(op) \
+    PyUnicode_MAX_CHAR_VALUE(_PyObject_CAST(op))
 
 /* === Public API ========================================================= */
 
@@ -417,9 +387,7 @@ static inline int PyUnicode_READY(PyObject* Py_UNUSED(op))
 {
     return 0;
 }
-#if !defined(Py_LIMITED_API) || Py_LIMITED_API+0 < 0x030b0000
-#  define PyUnicode_READY(op) PyUnicode_READY(_PyObject_CAST(op))
-#endif
+#define PyUnicode_READY(op) PyUnicode_READY(_PyObject_CAST(op))
 
 /* Get a copy of a Unicode string. */
 PyAPI_FUNC(PyObject*) _PyUnicode_Copy(

Include/cpython/weakrefobject.h

@@ -53,6 +53,4 @@ static inline PyObject* PyWeakref_GET_OBJECT(PyObject *ref_obj) {
     }
     return Py_None;
 }
-#if !defined(Py_LIMITED_API) || Py_LIMITED_API+0 < 0x030b0000
-#  define PyWeakref_GET_OBJECT(ref) PyWeakref_GET_OBJECT(_PyObject_CAST(ref))
-#endif
+#define PyWeakref_GET_OBJECT(ref) PyWeakref_GET_OBJECT(_PyObject_CAST(ref))