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

1 files changed, 31 insertions, 4 deletions

diff --git a/Python/clinic/traceback.c.h b/Python/clinic/traceback.c.h
index d9daccb..2815f65 100644
--- a/Python/clinic/traceback.c.h
+++ b/Python/clinic/traceback.c.h
@@ -17,14 +17,41 @@ tb_new(PyTypeObject *type, PyObject *args, PyObject *kwargs)
 {
     PyObject *return_value = NULL;
     static const char * const _keywords[] = {"tb_next", "tb_frame", "tb_lasti", "tb_lineno", NULL};
-    static _PyArg_Parser _parser = {"OO!ii:TracebackType", _keywords, 0};
+    static _PyArg_Parser _parser = {NULL, _keywords, "TracebackType", 0};
+    PyObject *argsbuf[4];
+    PyObject * const *fastargs;
+    Py_ssize_t nargs = PyTuple_GET_SIZE(args);
     PyObject *tb_next;
     PyFrameObject *tb_frame;
     int tb_lasti;
     int tb_lineno;
 
-    if (!_PyArg_ParseTupleAndKeywordsFast(args, kwargs, &_parser,
-        &tb_next, &PyFrame_Type, &tb_frame, &tb_lasti, &tb_lineno)) {
+    fastargs = _PyArg_UnpackKeywords(_PyTuple_CAST(args)->ob_item, nargs, kwargs, NULL, &_parser, 4, 4, 0, argsbuf);
+    if (!fastargs) {
+        goto exit;
+    }
+    tb_next = fastargs[0];
+    if (!PyObject_TypeCheck(fastargs[1], &PyFrame_Type)) {
+        _PyArg_BadArgument("TracebackType", 2, (&PyFrame_Type)->tp_name, fastargs[1]);
+        goto exit;
+    }
+    tb_frame = (PyFrameObject *)fastargs[1];
+    if (PyFloat_Check(fastargs[2])) {
+        PyErr_SetString(PyExc_TypeError,
+                        "integer argument expected, got float" );
+        goto exit;
+    }
+    tb_lasti = _PyLong_AsInt(fastargs[2]);
+    if (tb_lasti == -1 && PyErr_Occurred()) {
+        goto exit;
+    }
+    if (PyFloat_Check(fastargs[3])) {
+        PyErr_SetString(PyExc_TypeError,
+                        "integer argument expected, got float" );
+        goto exit;
+    }
+    tb_lineno = _PyLong_AsInt(fastargs[3]);
+    if (tb_lineno == -1 && PyErr_Occurred()) {
         goto exit;
     }
     return_value = tb_new_impl(type, tb_next, tb_frame, tb_lasti, tb_lineno);
@@ -32,4 +59,4 @@ tb_new(PyTypeObject *type, PyObject *args, PyObject *kwargs)
 exit:
     return return_value;
 }
-/*[clinic end generated code: output=0133130d7d19556f input=a9049054013a1b77]*/
+/*[clinic end generated code: output=7e4c0e252d0973b0 input=a9049054013a1b77]*/