mirror of
https://github.com/python/cpython.git
synced 2024-12-01 11:15:56 +01:00
49fd7fa443
number of tests, all because of the codecs/_multibytecodecs issue described here (it's not a Py3K issue, just something Py3K discovers): http://mail.python.org/pipermail/python-dev/2006-April/064051.html Hye-Shik Chang promised to look for a fix, so no need to fix it here. The tests that are expected to break are: test_codecencodings_cn test_codecencodings_hk test_codecencodings_jp test_codecencodings_kr test_codecencodings_tw test_codecs test_multibytecodec This merge fixes an actual test failure (test_weakref) in this branch, though, so I believe merging is the right thing to do anyway.
293 lines
8.3 KiB
C
293 lines
8.3 KiB
C
/* enumerate object */
|
|
|
|
#include "Python.h"
|
|
|
|
typedef struct {
|
|
PyObject_HEAD
|
|
long en_index; /* current index of enumeration */
|
|
PyObject* en_sit; /* secondary iterator of enumeration */
|
|
PyObject* en_result; /* result tuple */
|
|
} enumobject;
|
|
|
|
static PyObject *
|
|
enum_new(PyTypeObject *type, PyObject *args, PyObject *kwds)
|
|
{
|
|
enumobject *en;
|
|
PyObject *seq = NULL;
|
|
static char *kwlist[] = {"sequence", 0};
|
|
|
|
if (!PyArg_ParseTupleAndKeywords(args, kwds, "O:enumerate", kwlist,
|
|
&seq))
|
|
return NULL;
|
|
|
|
en = (enumobject *)type->tp_alloc(type, 0);
|
|
if (en == NULL)
|
|
return NULL;
|
|
en->en_index = 0;
|
|
en->en_sit = PyObject_GetIter(seq);
|
|
if (en->en_sit == NULL) {
|
|
Py_DECREF(en);
|
|
return NULL;
|
|
}
|
|
en->en_result = PyTuple_Pack(2, Py_None, Py_None);
|
|
if (en->en_result == NULL) {
|
|
Py_DECREF(en);
|
|
return NULL;
|
|
}
|
|
return (PyObject *)en;
|
|
}
|
|
|
|
static void
|
|
enum_dealloc(enumobject *en)
|
|
{
|
|
PyObject_GC_UnTrack(en);
|
|
Py_XDECREF(en->en_sit);
|
|
Py_XDECREF(en->en_result);
|
|
en->ob_type->tp_free(en);
|
|
}
|
|
|
|
static int
|
|
enum_traverse(enumobject *en, visitproc visit, void *arg)
|
|
{
|
|
Py_VISIT(en->en_sit);
|
|
Py_VISIT(en->en_result);
|
|
return 0;
|
|
}
|
|
|
|
static PyObject *
|
|
enum_next(enumobject *en)
|
|
{
|
|
PyObject *next_index;
|
|
PyObject *next_item;
|
|
PyObject *result = en->en_result;
|
|
PyObject *it = en->en_sit;
|
|
|
|
next_item = (*it->ob_type->tp_iternext)(it);
|
|
if (next_item == NULL)
|
|
return NULL;
|
|
|
|
next_index = PyInt_FromLong(en->en_index);
|
|
if (next_index == NULL) {
|
|
Py_DECREF(next_item);
|
|
return NULL;
|
|
}
|
|
en->en_index++;
|
|
|
|
if (result->ob_refcnt == 1) {
|
|
Py_INCREF(result);
|
|
Py_DECREF(PyTuple_GET_ITEM(result, 0));
|
|
Py_DECREF(PyTuple_GET_ITEM(result, 1));
|
|
} else {
|
|
result = PyTuple_New(2);
|
|
if (result == NULL) {
|
|
Py_DECREF(next_index);
|
|
Py_DECREF(next_item);
|
|
return NULL;
|
|
}
|
|
}
|
|
PyTuple_SET_ITEM(result, 0, next_index);
|
|
PyTuple_SET_ITEM(result, 1, next_item);
|
|
return result;
|
|
}
|
|
|
|
PyDoc_STRVAR(enum_doc,
|
|
"enumerate(iterable) -> iterator for index, value of iterable\n"
|
|
"\n"
|
|
"Return an enumerate object. iterable must be an other object that supports\n"
|
|
"iteration. The enumerate object yields pairs containing a count (from\n"
|
|
"zero) and a value yielded by the iterable argument. enumerate is useful\n"
|
|
"for obtaining an indexed list: (0, seq[0]), (1, seq[1]), (2, seq[2]), ...");
|
|
|
|
PyTypeObject PyEnum_Type = {
|
|
PyObject_HEAD_INIT(&PyType_Type)
|
|
0, /* ob_size */
|
|
"enumerate", /* tp_name */
|
|
sizeof(enumobject), /* tp_basicsize */
|
|
0, /* tp_itemsize */
|
|
/* methods */
|
|
(destructor)enum_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 |
|
|
Py_TPFLAGS_BASETYPE, /* tp_flags */
|
|
enum_doc, /* tp_doc */
|
|
(traverseproc)enum_traverse, /* tp_traverse */
|
|
0, /* tp_clear */
|
|
0, /* tp_richcompare */
|
|
0, /* tp_weaklistoffset */
|
|
PyObject_SelfIter, /* tp_iter */
|
|
(iternextfunc)enum_next, /* tp_iternext */
|
|
0, /* tp_methods */
|
|
0, /* tp_members */
|
|
0, /* tp_getset */
|
|
0, /* tp_base */
|
|
0, /* tp_dict */
|
|
0, /* tp_descr_get */
|
|
0, /* tp_descr_set */
|
|
0, /* tp_dictoffset */
|
|
0, /* tp_init */
|
|
PyType_GenericAlloc, /* tp_alloc */
|
|
enum_new, /* tp_new */
|
|
PyObject_GC_Del, /* tp_free */
|
|
};
|
|
|
|
/* Reversed Object ***************************************************************/
|
|
|
|
typedef struct {
|
|
PyObject_HEAD
|
|
Py_ssize_t index;
|
|
PyObject* seq;
|
|
} reversedobject;
|
|
|
|
static PyObject *
|
|
reversed_new(PyTypeObject *type, PyObject *args, PyObject *kwds)
|
|
{
|
|
Py_ssize_t n;
|
|
PyObject *seq;
|
|
reversedobject *ro;
|
|
|
|
if (!PyArg_UnpackTuple(args, "reversed", 1, 1, &seq))
|
|
return NULL;
|
|
|
|
if (PyObject_HasAttrString(seq, "__reversed__"))
|
|
return PyObject_CallMethod(seq, "__reversed__", NULL);
|
|
|
|
if (!PySequence_Check(seq)) {
|
|
PyErr_SetString(PyExc_TypeError,
|
|
"argument to reversed() must be a sequence");
|
|
return NULL;
|
|
}
|
|
|
|
n = PySequence_Size(seq);
|
|
if (n == -1)
|
|
return NULL;
|
|
|
|
ro = (reversedobject *)type->tp_alloc(type, 0);
|
|
if (ro == NULL)
|
|
return NULL;
|
|
|
|
ro->index = n-1;
|
|
Py_INCREF(seq);
|
|
ro->seq = seq;
|
|
return (PyObject *)ro;
|
|
}
|
|
|
|
static void
|
|
reversed_dealloc(reversedobject *ro)
|
|
{
|
|
PyObject_GC_UnTrack(ro);
|
|
Py_XDECREF(ro->seq);
|
|
ro->ob_type->tp_free(ro);
|
|
}
|
|
|
|
static int
|
|
reversed_traverse(reversedobject *ro, visitproc visit, void *arg)
|
|
{
|
|
Py_VISIT(ro->seq);
|
|
return 0;
|
|
}
|
|
|
|
static PyObject *
|
|
reversed_next(reversedobject *ro)
|
|
{
|
|
PyObject *item;
|
|
Py_ssize_t index = ro->index;
|
|
|
|
if (index >= 0) {
|
|
item = PySequence_GetItem(ro->seq, index);
|
|
if (item != NULL) {
|
|
ro->index--;
|
|
return item;
|
|
}
|
|
if (PyErr_ExceptionMatches(PyExc_IndexError) ||
|
|
PyErr_ExceptionMatches(PyExc_StopIteration))
|
|
PyErr_Clear();
|
|
}
|
|
ro->index = -1;
|
|
Py_CLEAR(ro->seq);
|
|
return NULL;
|
|
}
|
|
|
|
PyDoc_STRVAR(reversed_doc,
|
|
"reversed(sequence) -> reverse iterator over values of the sequence\n"
|
|
"\n"
|
|
"Return a reverse iterator");
|
|
|
|
static PyObject *
|
|
reversed_len(reversedobject *ro)
|
|
{
|
|
Py_ssize_t position, seqsize;
|
|
|
|
if (ro->seq == NULL)
|
|
return PyInt_FromLong(0);
|
|
seqsize = PySequence_Size(ro->seq);
|
|
if (seqsize == -1)
|
|
return NULL;
|
|
position = ro->index + 1;
|
|
return PyInt_FromSsize_t((seqsize < position) ? 0 : position);
|
|
}
|
|
|
|
PyDoc_STRVAR(length_hint_doc, "Private method returning an estimate of len(list(it)).");
|
|
|
|
static PyMethodDef reversediter_methods[] = {
|
|
{"__length_hint__", (PyCFunction)reversed_len, METH_NOARGS, length_hint_doc},
|
|
{NULL, NULL} /* sentinel */
|
|
};
|
|
|
|
PyTypeObject PyReversed_Type = {
|
|
PyObject_HEAD_INIT(&PyType_Type)
|
|
0, /* ob_size */
|
|
"reversed", /* tp_name */
|
|
sizeof(reversedobject), /* tp_basicsize */
|
|
0, /* tp_itemsize */
|
|
/* methods */
|
|
(destructor)reversed_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 |
|
|
Py_TPFLAGS_BASETYPE, /* tp_flags */
|
|
reversed_doc, /* tp_doc */
|
|
(traverseproc)reversed_traverse,/* tp_traverse */
|
|
0, /* tp_clear */
|
|
0, /* tp_richcompare */
|
|
0, /* tp_weaklistoffset */
|
|
PyObject_SelfIter, /* tp_iter */
|
|
(iternextfunc)reversed_next, /* tp_iternext */
|
|
reversediter_methods, /* tp_methods */
|
|
0, /* tp_members */
|
|
0, /* tp_getset */
|
|
0, /* tp_base */
|
|
0, /* tp_dict */
|
|
0, /* tp_descr_get */
|
|
0, /* tp_descr_set */
|
|
0, /* tp_dictoffset */
|
|
0, /* tp_init */
|
|
PyType_GenericAlloc, /* tp_alloc */
|
|
reversed_new, /* tp_new */
|
|
PyObject_GC_Del, /* tp_free */
|
|
};
|