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v0.8.1
v0.8.1
https://github.com/python/cpython
Revision 18623825d25b0f8f3b4bf96c1d5c4c2977a94004 authored by Jesse Noller on 18 June 2008, 13:29:52 UTC, committed by Jesse Noller on 18 June 2008, 13:29:52 UTC
1 parent 5da652e
Tip revision: 18623825d25b0f8f3b4bf96c1d5c4c2977a94004 authored by Jesse Noller on 18 June 2008, 13:29:52 UTC
Attempt RLock creation prior to test execution on Linux, if it raises the OSError in issue 3111, skip the test suite
Attempt RLock creation prior to test execution on Linux, if it raises the OSError in issue 3111, skip the test suite
Tip revision: 1862382
iterobject.c
/* Iterator objects */
#include "Python.h"
typedef struct {
PyObject_HEAD
long it_index;
PyObject *it_seq; /* Set to NULL when iterator is exhausted */
} seqiterobject;
PyObject *
PySeqIter_New(PyObject *seq)
{
seqiterobject *it;
if (!PySequence_Check(seq)) {
PyErr_BadInternalCall();
return NULL;
}
it = PyObject_GC_New(seqiterobject, &PySeqIter_Type);
if (it == NULL)
return NULL;
it->it_index = 0;
Py_INCREF(seq);
it->it_seq = seq;
_PyObject_GC_TRACK(it);
return (PyObject *)it;
}
static void
iter_dealloc(seqiterobject *it)
{
_PyObject_GC_UNTRACK(it);
Py_XDECREF(it->it_seq);
PyObject_GC_Del(it);
}
static int
iter_traverse(seqiterobject *it, visitproc visit, void *arg)
{
Py_VISIT(it->it_seq);
return 0;
}
static PyObject *
iter_iternext(PyObject *iterator)
{
seqiterobject *it;
PyObject *seq;
PyObject *result;
assert(PySeqIter_Check(iterator));
it = (seqiterobject *)iterator;
seq = it->it_seq;
if (seq == NULL)
return NULL;
result = PySequence_GetItem(seq, it->it_index);
if (result != NULL) {
it->it_index++;
return result;
}
if (PyErr_ExceptionMatches(PyExc_IndexError) ||
PyErr_ExceptionMatches(PyExc_StopIteration))
{
PyErr_Clear();
Py_DECREF(seq);
it->it_seq = NULL;
}
return NULL;
}
static PyObject *
iter_len(seqiterobject *it)
{
Py_ssize_t seqsize, len;
if (it->it_seq) {
seqsize = PySequence_Size(it->it_seq);
if (seqsize == -1)
return NULL;
len = seqsize - it->it_index;
if (len >= 0)
return PyInt_FromSsize_t(len);
}
return PyInt_FromLong(0);
}
PyDoc_STRVAR(length_hint_doc, "Private method returning an estimate of len(list(it)).");
static PyMethodDef seqiter_methods[] = {
{"__length_hint__", (PyCFunction)iter_len, METH_NOARGS, length_hint_doc},
{NULL, NULL} /* sentinel */
};
PyTypeObject PySeqIter_Type = {
PyVarObject_HEAD_INIT(&PyType_Type, 0)
"iterator", /* tp_name */
sizeof(seqiterobject), /* tp_basicsize */
0, /* tp_itemsize */
/* methods */
(destructor)iter_dealloc, /* tp_dealloc */
0, /* tp_print */
0, /* tp_getattr */
0, /* tp_setattr */
0, /* tp_compare */
0, /* tp_repr */
0, /* tp_as_number */
0, /* tp_as_sequence */
0, /* tp_as_mapping */
0, /* tp_hash */
0, /* tp_call */
0, /* tp_str */
PyObject_GenericGetAttr, /* tp_getattro */
0, /* tp_setattro */
0, /* tp_as_buffer */
Py_TPFLAGS_DEFAULT | Py_TPFLAGS_HAVE_GC,/* tp_flags */
0, /* tp_doc */
(traverseproc)iter_traverse, /* tp_traverse */
0, /* tp_clear */
0, /* tp_richcompare */
0, /* tp_weaklistoffset */
PyObject_SelfIter, /* tp_iter */
iter_iternext, /* tp_iternext */
seqiter_methods, /* tp_methods */
0, /* tp_members */
};
/* -------------------------------------- */
typedef struct {
PyObject_HEAD
PyObject *it_callable; /* Set to NULL when iterator is exhausted */
PyObject *it_sentinel; /* Set to NULL when iterator is exhausted */
} calliterobject;
PyObject *
PyCallIter_New(PyObject *callable, PyObject *sentinel)
{
calliterobject *it;
it = PyObject_GC_New(calliterobject, &PyCallIter_Type);
if (it == NULL)
return NULL;
Py_INCREF(callable);
it->it_callable = callable;
Py_INCREF(sentinel);
it->it_sentinel = sentinel;
_PyObject_GC_TRACK(it);
return (PyObject *)it;
}
static void
calliter_dealloc(calliterobject *it)
{
_PyObject_GC_UNTRACK(it);
Py_XDECREF(it->it_callable);
Py_XDECREF(it->it_sentinel);
PyObject_GC_Del(it);
}
static int
calliter_traverse(calliterobject *it, visitproc visit, void *arg)
{
Py_VISIT(it->it_callable);
Py_VISIT(it->it_sentinel);
return 0;
}
static PyObject *
calliter_iternext(calliterobject *it)
{
if (it->it_callable != NULL) {
PyObject *args = PyTuple_New(0);
PyObject *result;
if (args == NULL)
return NULL;
result = PyObject_Call(it->it_callable, args, NULL);
Py_DECREF(args);
if (result != NULL) {
int ok;
ok = PyObject_RichCompareBool(result,
it->it_sentinel,
Py_EQ);
if (ok == 0)
return result; /* Common case, fast path */
Py_DECREF(result);
if (ok > 0) {
Py_CLEAR(it->it_callable);
Py_CLEAR(it->it_sentinel);
}
}
else if (PyErr_ExceptionMatches(PyExc_StopIteration)) {
PyErr_Clear();
Py_CLEAR(it->it_callable);
Py_CLEAR(it->it_sentinel);
}
}
return NULL;
}
PyTypeObject PyCallIter_Type = {
PyVarObject_HEAD_INIT(&PyType_Type, 0)
"callable-iterator", /* tp_name */
sizeof(calliterobject), /* tp_basicsize */
0, /* tp_itemsize */
/* methods */
(destructor)calliter_dealloc, /* tp_dealloc */
0, /* tp_print */
0, /* tp_getattr */
0, /* tp_setattr */
0, /* tp_compare */
0, /* tp_repr */
0, /* tp_as_number */
0, /* tp_as_sequence */
0, /* tp_as_mapping */
0, /* tp_hash */
0, /* tp_call */
0, /* tp_str */
PyObject_GenericGetAttr, /* tp_getattro */
0, /* tp_setattro */
0, /* tp_as_buffer */
Py_TPFLAGS_DEFAULT | Py_TPFLAGS_HAVE_GC,/* tp_flags */
0, /* tp_doc */
(traverseproc)calliter_traverse, /* tp_traverse */
0, /* tp_clear */
0, /* tp_richcompare */
0, /* tp_weaklistoffset */
PyObject_SelfIter, /* tp_iter */
(iternextfunc)calliter_iternext, /* tp_iternext */
0, /* tp_methods */
};
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