pythongh-106320: Remove private AC converter functions (python#108505)

Move these private functions to the internal C API
(pycore_abstract.h):

* _Py_convert_optional_to_ssize_t()
* _PyNumber_Index()

Argument Clinic now emits #include "pycore_abstract.h" when these
functions are used.

The parser of the c-analyzer tool now uses a list of files which use
the limited C API, rather than a list of files using the internal C
API.

Author: vstinner

Include/cpython/abstract.h

@@ -53,13 +53,3 @@ PyAPI_FUNC(Py_ssize_t) PyObject_LengthHint(PyObject *o, Py_ssize_t);
    need to be corrected for a negative index. */
 #define PySequence_ITEM(o, i)\
     ( Py_TYPE(o)->tp_as_sequence->sq_item((o), (i)) )
-
-/* === Mapping protocol ================================================= */
-
-// Convert Python int to Py_ssize_t. Do nothing if the argument is None.
-// Cannot be moved to the internal C API: used by Argument Clinic.
-PyAPI_FUNC(int) _Py_convert_optional_to_ssize_t(PyObject *, void *);
-
-// Same as PyNumber_Index but can return an instance of a subclass of int.
-// Cannot be moved to the internal C API: used by Argument Clinic.
-PyAPI_FUNC(PyObject *) _PyNumber_Index(PyObject *o);

Include/internal/pycore_abstract.h

@@ -47,6 +47,13 @@ extern int _PyObject_RealIsInstance(PyObject *inst, PyObject *cls);
 
 extern int _PyObject_RealIsSubclass(PyObject *derived, PyObject *cls);
 
+// Convert Python int to Py_ssize_t. Do nothing if the argument is None.
+// Export for '_bisect' shared extension.
+PyAPI_FUNC(int) _Py_convert_optional_to_ssize_t(PyObject *, void *);
+
+// Same as PyNumber_Index() but can return an instance of a subclass of int.
+// Export for 'math' shared extension.
+PyAPI_FUNC(PyObject*) _PyNumber_Index(PyObject *o);
 
 #ifdef __cplusplus
 }

Modules/_io/_iomodule.c

@@ -8,6 +8,7 @@
 */
 
 #include "Python.h"
+#include "pycore_abstract.h"      // _PyNumber_Index()
 #include "pycore_initconfig.h"    // _PyStatus_OK()
 #include "pycore_pystate.h"       // _PyInterpreterState_GET()
 

Modules/_io/clinic/bufferedio.c.h

@@ -57,6 +57,7 @@ raised for division by zero and mod by zero.
 #endif
 
 #include "Python.h"
+#include "pycore_abstract.h"      // _PyNumber_Index()
 #include "pycore_bitutils.h"      // _Py_bit_length()
 #include "pycore_call.h"          // _PyObject_CallNoArgs()
 #include "pycore_long.h"          // _PyLong_GetZero()

Modules/_io/clinic/bytesio.c.h

@@ -23,6 +23,7 @@
 #endif
 
 #include <Python.h>
+#include "pycore_abstract.h"      // _Py_convert_optional_to_ssize_t()
 #include "pycore_bytesobject.h"   // _PyBytes_Find()
 #include "pycore_fileutils.h"     // _Py_stat_struct
 

Modules/_io/clinic/fileio.c.h

@@ -12,6 +12,7 @@
 #ifdef __VXWORKS__
 #  include "pycore_bitutils.h"    // _Py_popcount32()
 #endif
+#include "pycore_abstract.h"      // _PyNumber_Index()
 #include "pycore_call.h"          // _PyObject_CallNoArgs()
 #include "pycore_ceval.h"         // _PyEval_ReInitThreads()
 #include "pycore_fileutils.h"     // _Py_closerange()