pythongh-120642: Move _PyCode_CODE() to the internal C API (python#12…

…1644)

Move _PyCode_CODE() and _PyCode_NBYTES() macros to the internal C API
since they use _Py_CODEUNIT which is only part of the internal C API.

Include/cpython/code.h

@@ -194,9 +194,6 @@ Py_DEPRECATED(3.13) static inline int PyCode_GetFirstFree(PyCodeObject *op) {
     return PyUnstable_Code_GetFirstFree(op);
 }
 
-#define _PyCode_CODE(CO) _Py_RVALUE((_Py_CODEUNIT *)(CO)->co_code_adaptive)
-#define _PyCode_NBYTES(CO) (Py_SIZE(CO) * (Py_ssize_t)sizeof(_Py_CODEUNIT))
-
 /* Unstable public interface */
 PyAPI_FUNC(PyCodeObject *) PyUnstable_Code_New(
         int, int, int, int, int, PyObject *, PyObject *,

Include/internal/pycore_code.h

@@ -31,6 +31,9 @@ typedef union {
     _Py_BackoffCounter counter;  // First cache entry of specializable op
 } _Py_CODEUNIT;
 
+#define _PyCode_CODE(CO) _Py_RVALUE((_Py_CODEUNIT *)(CO)->co_code_adaptive)
+#define _PyCode_NBYTES(CO) (Py_SIZE(CO) * (Py_ssize_t)sizeof(_Py_CODEUNIT))
+
 
 /* These macros only remain defined for compatibility. */
 #define _Py_OPCODE(word) ((word).op.code)