bpo-39573: Update clinic to use Py_IS_TYPE macro

Author: corona10

Misc/NEWS.d/next/Library/2020-02-14-10-08-53.bpo-39573.BIIX2M.rst

@@ -0,0 +1 @@
+Update clinic tool to use :c:func:`Py_IS_TYPE`. Patch by Dong-hee Na.

Modules/_io/clinic/bufferedio.c.h

@@ -578,7 +578,7 @@ _io_BufferedRWPair___init__(PyObject *self, PyObject *args, PyObject *kwargs)
     PyObject *writer;
     Py_ssize_t buffer_size = DEFAULT_BUFFER_SIZE;
 
-    if ((Py_TYPE(self) == &PyBufferedRWPair_Type) &&
+    if (Py_IS_TYPE(self, &PyBufferedRWPair_Type) &&
         !_PyArg_NoKeywords("BufferedRWPair", kwargs)) {
         goto exit;
     }
@@ -672,4 +672,4 @@ _io_BufferedRandom___init__(PyObject *self, PyObject *args, PyObject *kwargs)
 exit:
     return return_value;
 }
-/*[clinic end generated code: output=7246104f6c7d3167 input=a9049054013a1b77]*/
+/*[clinic end generated code: output=7d9ad40c95bdd808 input=a9049054013a1b77]*/

Modules/clinic/_bz2module.c.h

@@ -3585,17 +3585,14 @@ def set_template_dict(self, template_dict):
         cls = self.function.cls
 
         if ((kind in (METHOD_NEW, METHOD_INIT)) and cls and cls.typedef):
+            type_object = self.function.cls.type_object
             if kind == METHOD_NEW:
-                passed_in_type = self.name
+                type_check = '({} == {})'.format(self.name, type_object)
             else:
-                passed_in_type = 'Py_TYPE({})'.format(self.name)
-
-            line = '({passed_in_type} == {type_object}) &&\n        '
-            d = {
-                'type_object': self.function.cls.type_object,
-                'passed_in_type': passed_in_type
-                }
-            template_dict['self_type_check'] = line.format_map(d)
+                type_check = 'Py_IS_TYPE({}, {})'.format(self.name, type_object)
+
+            line = '{} &&\n        '.format(type_check)
+            template_dict['self_type_check'] = line