bpo-36127: Argument Clinic: inline parsing code for keyword parameters. (GH-12058)

1 files changed, 12 insertions, 0 deletions

diff --git a/Include/modsupport.h b/Include/modsupport.h
index f17060c2e1..66a5ec839e 100644
--- a/Include/modsupport.h
+++ b/Include/modsupport.h
@@ -118,6 +118,18 @@ PyAPI_FUNC(int) _PyArg_ParseStackAndKeywords(
     ...);
 PyAPI_FUNC(int) _PyArg_VaParseTupleAndKeywordsFast(PyObject *, PyObject *,
                                                    struct _PyArg_Parser *, va_list);
+PyAPI_FUNC(PyObject * const *) _PyArg_UnpackKeywords(
+        PyObject *const *args, Py_ssize_t nargs,
+        PyObject *kwargs, PyObject *kwnames,
+        struct _PyArg_Parser *parser,
+        int minpos, int maxpos, int minkw,
+        PyObject **buf);
+#define _PyArg_UnpackKeywords(args, nargs, kwargs, kwnames, parser, minpos, maxpos, minkw, buf) \
+    (((minkw) == 0 && (kwargs) == NULL && (kwnames) == NULL && \
+      (minpos) <= (nargs) && (nargs) <= (maxpos) && args != NULL) ? (args) : \
+     _PyArg_UnpackKeywords((args), (nargs), (kwargs), (kwnames), (parser), \
+                           (minpos), (maxpos), (minkw), (buf)))
+
 void _PyArg_Fini(void);
 #endif   /* Py_LIMITED_API */