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add list_contains and tuplecontains: efficient implementations of tp_contains

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Jeremy Hylton 2000-04-27 21:41:03 +00:00
parent 035a07e263
commit 37b1a26c89
2 changed files with 39 additions and 0 deletions
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18
Objects/tupleobject.c
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@ -281,6 +281,23 @@ tuplelength(a)
return a->ob_size;
}
static int
tuplecontains(a, el)
PyTupleObject *a;
PyObject *el;
{
int i, cmp;
for (i = 0; i < a->ob_size; ++i) {
cmp = PyObject_Compare(el, PyTuple_GET_ITEM(a, i));
if (cmp == 0)
return 1;
if (PyErr_Occurred())
return -1;
}
return 0;
}
static PyObject *
tupleitem(a, i)
register PyTupleObject *a;
@ -409,6 +426,7 @@ static PySequenceMethods tuple_as_sequence = {
(intintargfunc)tupleslice, /*sq_slice*/
0, /*sq_ass_item*/
0, /*sq_ass_slice*/
(objobjproc)tuplecontains, /*sq_contains*/
};
PyTypeObject PyTuple_Type = {