Issue #19514: Deduplicate some _Py_IDENTIFIER declarations.

Patch by Andrei Dorian Duma.

Misc/NEWS

@@ -10,6 +10,9 @@ Projected release date: 2013-11-24
 Core and Builtins
 -----------------
 
+- Issue #19514: Deduplicate some _Py_IDENTIFIER declarations. 
+  Patch by Andrei Dorian Duma.
+
 - Issue #17936: Fix O(n**2) behaviour when adding or removing many subclasses
   of a given type.
 

Modules/_bisectmodule.c

@@ -6,6 +6,8 @@ Converted to C by Dmitry Vasiliev (dima at hlabs.spb.ru).
 #define PY_SSIZE_T_CLEAN
 #include "Python.h"
 
+_Py_IDENTIFIER(insert);
+
 static Py_ssize_t
 internal_bisect_right(PyObject *list, PyObject *item, Py_ssize_t lo, Py_ssize_t hi)
 {
@@ -90,8 +92,6 @@ insort_right(PyObject *self, PyObject *args, PyObject *kw)
         if (PyList_Insert(list, index, item) < 0)
             return NULL;
     } else {
-        _Py_IDENTIFIER(insert);
-
         result = _PyObject_CallMethodId(list, &PyId_insert, "nO", index, item);
         if (result == NULL)
             return NULL;
@@ -195,7 +195,6 @@ insort_left(PyObject *self, PyObject *args, PyObject *kw)
         if (PyList_Insert(list, index, item) < 0)
             return NULL;
     } else {
-        _Py_IDENTIFIER(insert);
         result = _PyObject_CallMethodId(list, &PyId_insert, "nO", index, item);
         if (result == NULL)
             return NULL;

Modules/_datetimemodule.c

@@ -104,6 +104,11 @@ static PyTypeObject PyDateTime_TimeType;
 static PyTypeObject PyDateTime_TZInfoType;
 static PyTypeObject PyDateTime_TimeZoneType;
 
+_Py_IDENTIFIER(as_integer_ratio);
+_Py_IDENTIFIER(fromutc);
+_Py_IDENTIFIER(isoformat);
+_Py_IDENTIFIER(strftime);
+
 /* ---------------------------------------------------------------------------
  * Math utilities.
  */
@@ -1277,8 +1282,6 @@ wrap_strftime(PyObject *object, PyObject *format, PyObject *timetuple,
             goto Done;
         format = PyUnicode_FromString(PyBytes_AS_STRING(newfmt));
         if (format != NULL) {
-            _Py_IDENTIFIER(strftime);
-
             result = _PyObject_CallMethodId(time, &PyId_strftime, "OO",
                                             format, timetuple, NULL);
             Py_DECREF(format);
@@ -1566,7 +1569,6 @@ multiply_float_timedelta(PyObject *floatobj, PyDateTime_Delta *delta)
     PyObject *result = NULL;
     PyObject *pyus_in = NULL, *temp, *pyus_out;
     PyObject *ratio = NULL;
-    _Py_IDENTIFIER(as_integer_ratio);
 
     pyus_in = delta_to_microseconds(delta);
     if (pyus_in == NULL)
@@ -1665,7 +1667,6 @@ truedivide_timedelta_float(PyDateTime_Delta *delta, PyObject *f)
     PyObject *result = NULL;
     PyObject *pyus_in = NULL, *temp, *pyus_out;
     PyObject *ratio = NULL;
-    _Py_IDENTIFIER(as_integer_ratio);
 
     pyus_in = delta_to_microseconds(delta);
     if (pyus_in == NULL)
@@ -2635,8 +2636,6 @@ date_isoformat(PyDateTime_Date *self)
 static PyObject *
 date_str(PyDateTime_Date *self)
 {
-    _Py_IDENTIFIER(isoformat);
-
     return _PyObject_CallMethodId((PyObject *)self, &PyId_isoformat, "()");
 }
 
@@ -2676,7 +2675,6 @@ static PyObject *
 date_format(PyDateTime_Date *self, PyObject *args)
 {
     PyObject *format;
-    _Py_IDENTIFIER(strftime);
 
     if (!PyArg_ParseTuple(args, "U:__format__", &format))
         return NULL;
@@ -3593,8 +3591,6 @@ time_repr(PyDateTime_Time *self)
 static PyObject *
 time_str(PyDateTime_Time *self)
 {
-    _Py_IDENTIFIER(isoformat);
-
     return _PyObject_CallMethodId((PyObject *)self, &PyId_isoformat, "()");
 }
 
@@ -4207,7 +4203,6 @@ datetime_now_impl(PyObject *cls, PyObject *tz)
     if (self != NULL && tz != Py_None) {
         /* Convert UTC to tzinfo's zone. */
         PyObject *temp = self;
-        _Py_IDENTIFIER(fromutc);
 
         self = _PyObject_CallMethodId(tz, &PyId_fromutc, "O", self);
         Py_DECREF(temp);
@@ -4246,7 +4241,6 @@ datetime_fromtimestamp(PyObject *cls, PyObject *args, PyObject *kw)
     if (self != NULL && tzinfo != Py_None) {
         /* Convert UTC to tzinfo's zone. */
         PyObject *temp = self;
-        _Py_IDENTIFIER(fromutc);
 
         self = _PyObject_CallMethodId(tzinfo, &PyId_fromutc, "O", self);
         Py_DECREF(temp);
@@ -4529,8 +4523,6 @@ datetime_repr(PyDateTime_DateTime *self)
 static PyObject *
 datetime_str(PyDateTime_DateTime *self)
 {
-    _Py_IDENTIFIER(isoformat);
-
     return _PyObject_CallMethodId((PyObject *)self, &PyId_isoformat, "(s)", " ");
 }
 
@@ -4809,7 +4801,6 @@ datetime_astimezone(PyDateTime_DateTime *self, PyObject *args, PyObject *kw)
     PyObject *offset;
     PyObject *temp;
     PyObject *tzinfo = Py_None;
-    _Py_IDENTIFIER(fromutc);
     static char *keywords[] = {"tz", NULL};
 
     if (! PyArg_ParseTupleAndKeywords(args, kw, "|O:astimezone", keywords,

Modules/_sqlite/connection.c

@@ -41,6 +41,8 @@
 #endif
 #endif
 
+_Py_IDENTIFIER(cursor);
+
 static int pysqlite_connection_set_isolation_level(pysqlite_Connection* self, PyObject* isolation_level);
 static void _pysqlite_drop_unused_cursor_references(pysqlite_Connection* self);
 
@@ -1279,7 +1281,6 @@ PyObject* pysqlite_connection_execute(pysqlite_Connection* self, PyObject* args,
     PyObject* cursor = 0;
     PyObject* result = 0;
     PyObject* method = 0;
-    _Py_IDENTIFIER(cursor);
 
     cursor = _PyObject_CallMethodId((PyObject*)self, &PyId_cursor, "");
     if (!cursor) {
@@ -1309,7 +1310,6 @@ PyObject* pysqlite_connection_executemany(pysqlite_Connection* self, PyObject* a
     PyObject* cursor = 0;
     PyObject* result = 0;
     PyObject* method = 0;
-    _Py_IDENTIFIER(cursor);
 
     cursor = _PyObject_CallMethodId((PyObject*)self, &PyId_cursor, "");
     if (!cursor) {
@@ -1339,7 +1339,6 @@ PyObject* pysqlite_connection_executescript(pysqlite_Connection* self, PyObject*
     PyObject* cursor = 0;
     PyObject* result = 0;
     PyObject* method = 0;
-    _Py_IDENTIFIER(cursor);
 
     cursor = _PyObject_CallMethodId((PyObject*)self, &PyId_cursor, "");
     if (!cursor) {

Objects/typeobject.c

@@ -39,16 +39,20 @@ struct method_cache_entry {
 static struct method_cache_entry method_cache[1 << MCACHE_SIZE_EXP];
 static unsigned int next_version_tag = 0;
 
+/* alphabetical order */
+_Py_IDENTIFIER(__abstractmethods__);
 _Py_IDENTIFIER(__class__);
+_Py_IDENTIFIER(__delitem__);
 _Py_IDENTIFIER(__dict__);
 _Py_IDENTIFIER(__doc__);
-_Py_IDENTIFIER(__getitem__);
 _Py_IDENTIFIER(__getattribute__);
+_Py_IDENTIFIER(__getitem__);
 _Py_IDENTIFIER(__hash__);
+_Py_IDENTIFIER(__len__);
 _Py_IDENTIFIER(__module__);
 _Py_IDENTIFIER(__name__);
 _Py_IDENTIFIER(__new__);
-_Py_IDENTIFIER(__abstractmethods__);
+_Py_IDENTIFIER(__setitem__);
 
 static PyObject *
 slot_tp_new(PyTypeObject *type, PyObject *args, PyObject *kwds);
@@ -5068,7 +5072,6 @@ FUNCNAME(PyObject *self, ARG1TYPE arg1, ARG2TYPE arg2) \
 static Py_ssize_t
 slot_sq_length(PyObject *self)
 {
-    _Py_IDENTIFIER(__len__);
     PyObject *res = call_method(self, &PyId___len__, "()");
     Py_ssize_t len;
 
@@ -5129,8 +5132,6 @@ static int
 slot_sq_ass_item(PyObject *self, Py_ssize_t index, PyObject *value)
 {
     PyObject *res;
-    _Py_IDENTIFIER(__delitem__);
-    _Py_IDENTIFIER(__setitem__);
 
     if (value == NULL)
         res = call_method(self, &PyId___delitem__, "(n)", index);
@@ -5180,8 +5181,6 @@ static int
 slot_mp_ass_subscript(PyObject *self, PyObject *key, PyObject *value)
 {
     PyObject *res;
-    _Py_IDENTIFIER(__delitem__);
-    _Py_IDENTIFIER(__setitem__);
 
     if (value == NULL)
         res = call_method(self, &PyId___delitem__, "(O)", key);
@@ -5232,7 +5231,6 @@ slot_nb_bool(PyObject *self)
     PyObject *func, *args;
     int result = -1;
     int using_len = 0;
-    _Py_IDENTIFIER(__len__);
     _Py_IDENTIFIER(__bool__);
 
     func = lookup_maybe(self, &PyId___bool__);