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bpo-29878: Add global instances of int for 0 and 1. (#852)

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Serhiy Storchaka 2017-03-30 09:09:41 +03:00 • committed by GitHub
parent e6911a44f6
commit ba85d69a3e
18 changed files with 105 additions and 249 deletions
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20
Modules/_collectionsmodule.c
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@ -2267,8 +2267,6 @@ _count_elements(PyObject *self, PyObject *args)
PyObject *it, *iterable, *mapping, *oldval;
PyObject *newval = NULL;
PyObject *key = NULL;
PyObject *zero = NULL;
PyObject *one = NULL;
PyObject *bound_get = NULL;
PyObject *mapping_get;
PyObject *dict_get;
@ -2282,10 +2280,6 @@ _count_elements(PyObject *self, PyObject *args)
if (it == NULL)
return NULL;
one = PyLong_FromLong(1);
if (one == NULL)
goto done;
/* Only take the fast path when get() and __setitem__()
* have not been overridden.
*/
@ -2325,10 +2319,10 @@ _count_elements(PyObject *self, PyObject *args)
if (oldval == NULL) {
if (PyErr_Occurred())
goto done;
if (_PyDict_SetItem_KnownHash(mapping, key, one, hash) < 0)
if (_PyDict_SetItem_KnownHash(mapping, key, _PyLong_One, hash) < 0)
goto done;
} else {
newval = PyNumber_Add(oldval, one);
newval = PyNumber_Add(oldval, _PyLong_One);
if (newval == NULL)
goto done;
if (_PyDict_SetItem_KnownHash(mapping, key, newval, hash) < 0)
@ -2342,18 +2336,14 @@ _count_elements(PyObject *self, PyObject *args)
if (bound_get == NULL)
goto done;
zero = PyLong_FromLong(0);
if (zero == NULL)
goto done;
while (1) {
key = PyIter_Next(it);
if (key == NULL)
break;
oldval = PyObject_CallFunctionObjArgs(bound_get, key, zero, NULL);
oldval = PyObject_CallFunctionObjArgs(bound_get, key, _PyLong_Zero, NULL);
if (oldval == NULL)
break;
newval = PyNumber_Add(oldval, one);
newval = PyNumber_Add(oldval, _PyLong_One);
Py_DECREF(oldval);
if (newval == NULL)
break;
@ -2369,8 +2359,6 @@ done:
Py_XDECREF(key);
Py_XDECREF(newval);
Py_XDECREF(bound_get);
Py_XDECREF(zero);
Py_XDECREF(one);
if (PyErr_Occurred())
return NULL;
Py_RETURN_NONE;