refactor: add shim for PyLong_AsByteArray to work with different function signatures

Author: Xmader

include/pyshim.hh

@@ -128,4 +128,18 @@ inline PyObject *PyObject_CallOneArg(PyObject *func, PyObject *arg) {
 }
 #endif
 
+/**
+ * @brief Shim for `_PyLong_AsByteArray`.
+ *        Python 3.13.0a4 added a new public API `PyLong_AsNativeBytes()` to replace the private `_PyLong_AsByteArray()`.
+ *        But this change also modified the function signature of `_PyLong_AsByteArray()`.
+ * @see https://github.com/python/cpython/issues/111140
+ */
+inline int PyLong_AsByteArray(PyLongObject *v, unsigned char *bytes, size_t n, bool little_endian, bool is_signed) {
+#if PY_VERSION_HEX >= 0x030d0000 // Python version is 3.13 or higher
+  return _PyLong_AsByteArray(v, bytes, n, little_endian, is_signed, /*with_exceptions*/ false);
+#else
+  return _PyLong_AsByteArray(v, bytes, n, little_endian, is_signed);
+#endif
+}
+
 #endif // #ifndef PythonMonkey_py_version_shim_

src/IntType.cc

@@ -134,11 +134,7 @@ JS::BigInt *IntType::toJsBigInt(JSContext *cx, PyObject *pyObject) {
     // Convert to bytes of 8-bit "digits" in **big-endian** order
     size_t byteCount = (size_t)JS_DIGIT_BYTE * jsDigitCount;
     uint8_t *bytes = (uint8_t *)PyMem_Malloc(byteCount);
-    #if PY_VERSION_HEX >= 0x030d0000 // Python version is greater than 3.13
-    _PyLong_AsByteArray((PyLongObject *)pyObject, bytes, byteCount, /*is_little_endian*/ false, false, false);
-    #else
-    _PyLong_AsByteArray((PyLongObject *)pyObject, bytes, byteCount, /*is_little_endian*/ false, false);
-    #endif
+    PyLong_AsByteArray((PyLongObject *)pyObject, bytes, byteCount, /*is_little_endian*/ false, false);
 
     // Convert pm.bigint to JS::BigInt through hex strings (no public API to convert directly through bytes)
     // TODO (Tom Tang): We could manually allocate the memory, https://hg.mozilla.org/releases/mozilla-esr102/file/tip/js/src/vm/BigIntType.cpp#l162, but still no public API