Issue python#28999: Use Py_RETURN_NONE, Py_RETURN_TRUE and Py_RETURN_FALSE wherever

possible but Coccinelle couldn't find opportunity.

Author: serhiy-storchaka

Include/py_curses.h

@@ -154,19 +154,16 @@ static PyObject *PyCurses_ ## X (PyObject *self) \
 { \
   PyCursesInitialised \
   if (X () == FALSE) { \
-    Py_INCREF(Py_False); \
-    return Py_False; \
+    Py_RETURN_FALSE; \
   } \
-  Py_INCREF(Py_True); \
-  return Py_True; }
+  Py_RETURN_TRUE; }
 
 #define NoArgNoReturnVoidFunction(X) \
 static PyObject *PyCurses_ ## X (PyObject *self) \
 { \
   PyCursesInitialised \
   X(); \
-  Py_INCREF(Py_None); \
-  return Py_None; }
+  Py_RETURN_NONE; }
 
 #ifdef __cplusplus
 }

Modules/_ctypes/cfield.c

@@ -498,7 +498,7 @@ get_ulonglong(PyObject *v, unsigned long long *p)
 #ifdef _CTYPES_DEBUG_KEEP
 #define _RET(x) Py_INCREF(x); return x
 #else
-#define _RET(X) Py_INCREF(Py_None); return Py_None
+#define _RET(X) Py_RETURN_NONE
 #endif
 
 /*****************************************************************

Modules/_json.c

@@ -1108,17 +1108,15 @@ scan_once_unicode(PyScannerObject *s, PyObject *pystr, Py_ssize_t idx, Py_ssize_
         case 'n':
             /* null */
             if ((idx + 3 < length) && PyUnicode_READ(kind, str, idx + 1) == 'u' && PyUnicode_READ(kind, str, idx + 2) == 'l' && PyUnicode_READ(kind, str, idx + 3) == 'l') {
-                Py_INCREF(Py_None);
                 *next_idx_ptr = idx + 4;
-                return Py_None;
+                Py_RETURN_NONE;
             }
             break;
         case 't':
             /* true */
             if ((idx + 3 < length) && PyUnicode_READ(kind, str, idx + 1) == 'r' && PyUnicode_READ(kind, str, idx + 2) == 'u' && PyUnicode_READ(kind, str, idx + 3) == 'e') {
-                Py_INCREF(Py_True);
                 *next_idx_ptr = idx + 4;
-                return Py_True;
+                Py_RETURN_TRUE;
             }
             break;
         case 'f':
@@ -1127,9 +1125,8 @@ scan_once_unicode(PyScannerObject *s, PyObject *pystr, Py_ssize_t idx, Py_ssize_
                 PyUnicode_READ(kind, str, idx + 2) == 'l' &&
                 PyUnicode_READ(kind, str, idx + 3) == 's' &&
                 PyUnicode_READ(kind, str, idx + 4) == 'e') {
-                Py_INCREF(Py_False);
                 *next_idx_ptr = idx + 5;
-                return Py_False;
+                Py_RETURN_FALSE;
             }
             break;
         case 'N':

Modules/_testcapimodule.c

@@ -117,8 +117,7 @@ test_sizeof_c_types(PyObject *self)
     CHECK_SIZEOF(intptr_t, sizeof(void *));
     CHECK_SIGNNESS(intptr_t, 1);
 
-    Py_INCREF(Py_None);
-    return Py_None;
+    Py_RETURN_NONE;
 
 #undef IS_SIGNED
 #undef CHECK_SIGNESS

Objects/stringlib/unicode_format.h

@@ -60,10 +60,8 @@ SubString_init(SubString *str, PyObject *s, Py_ssize_t start, Py_ssize_t end)
 Py_LOCAL_INLINE(PyObject *)
 SubString_new_object(SubString *str)
 {
-    if (str->str == NULL) {
-        Py_INCREF(Py_None);
-        return Py_None;
-    }
+    if (str->str == NULL)
+        Py_RETURN_NONE;
     return PyUnicode_Substring(str->str, str->start, str->end);
 }