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Name	Size	Permission	Date
clinic	[ DIR ]	drwxr-xr-x	2024-03-19 22:46
stringlib	[ DIR ]	drwxr-xr-x	2024-03-19 22:46
README	41 B	-rw-r--r--	2024-03-19 22:46
abstract.c	78.14 KB	-rw-r--r--	2024-03-19 22:46
abstract.gcda	24.84 KB	-rw-r--r--	2025-06-04 09:21
abstract.o	664.97 KB	-rw-r--r--	2025-06-04 09:22
accu.c	2.41 KB	-rw-r--r--	2024-03-19 22:46
accu.gcda	4.12 KB	-rw-r--r--	2025-06-04 09:21
accu.o	49.66 KB	-rw-r--r--	2025-06-04 09:22
boolobject.c	7.12 KB	-rw-r--r--	2024-03-19 22:46
boolobject.gcda	4.2 KB	-rw-r--r--	2025-06-04 09:21
boolobject.o	51.54 KB	-rw-r--r--	2025-06-04 09:22
bytearrayobject.c	72.53 KB	-rw-r--r--	2024-03-19 22:46
bytearrayobject.gcda	29.45 KB	-rw-r--r--	2025-06-04 09:21
bytearrayobject.o	837.34 KB	-rw-r--r--	2025-06-04 09:22
bytes_methods.c	21.14 KB	-rw-r--r--	2024-03-19 22:46
bytes_methods.gcda	8 KB	-rw-r--r--	2025-06-04 09:21
bytes_methods.o	269.63 KB	-rw-r--r--	2025-06-04 09:22
bytesobject.c	99.98 KB	-rw-r--r--	2024-03-19 22:46
bytesobject.gcda	32.01 KB	-rw-r--r--	2025-06-04 09:21
bytesobject.o	956.34 KB	-rw-r--r--	2025-06-04 09:22
call.c	27.29 KB	-rw-r--r--	2024-03-19 22:46
call.gcda	8.28 KB	-rw-r--r--	2025-06-04 09:21
call.o	339.1 KB	-rw-r--r--	2025-06-04 09:22
capsule.c	7.27 KB	-rw-r--r--	2024-03-19 22:46
capsule.gcda	5.2 KB	-rw-r--r--	2025-06-04 09:21
capsule.o	73.71 KB	-rw-r--r--	2025-06-04 09:22
cellobject.c	5.65 KB	-rw-r--r--	2024-03-19 22:46
cellobject.gcda	4.57 KB	-rw-r--r--	2025-06-04 09:21
cellobject.o	91.55 KB	-rw-r--r--	2025-06-04 09:22
classobject.c	17.99 KB	-rw-r--r--	2024-03-19 22:46
classobject.gcda	7.01 KB	-rw-r--r--	2025-06-04 09:21
classobject.o	149.12 KB	-rw-r--r--	2025-06-04 09:22
codeobject.c	42.38 KB	-rw-r--r--	2024-03-19 22:46
codeobject.gcda	10.02 KB	-rw-r--r--	2025-06-04 09:21
codeobject.o	320.38 KB	-rw-r--r--	2025-06-04 09:22
complexobject.c	30.92 KB	-rw-r--r--	2024-03-19 22:46
complexobject.gcda	8.7 KB	-rw-r--r--	2025-06-04 09:21
complexobject.o	221.24 KB	-rw-r--r--	2025-06-04 09:22
descrobject.c	62.59 KB	-rw-r--r--	2024-03-19 22:46
descrobject.gcda	13.57 KB	-rw-r--r--	2025-06-04 09:21
descrobject.o	441.51 KB	-rw-r--r--	2025-06-04 09:22
dict-common.h	2.22 KB	-rw-r--r--	2024-03-19 22:46
dictnotes.txt	5.96 KB	-rw-r--r--	2024-03-19 22:46
dictobject.c	148.87 KB	-rw-r--r--	2024-03-19 22:46
dictobject.gcda	28.55 KB	-rw-r--r--	2025-06-04 09:21
dictobject.o	1022.94 KB	-rw-r--r--	2025-06-04 09:22
enumobject.c	14.61 KB	-rw-r--r--	2024-03-19 22:46
enumobject.gcda	6.13 KB	-rw-r--r--	2025-06-04 09:21
enumobject.o	140.49 KB	-rw-r--r--	2025-06-04 09:22
exceptions.c	85.65 KB	-rw-r--r--	2024-03-19 22:46
exceptions.gcda	20.98 KB	-rw-r--r--	2025-06-04 09:21
exceptions.o	585.38 KB	-rw-r--r--	2025-06-04 09:22
fileobject.c	16.56 KB	-rw-r--r--	2024-03-19 22:46
fileobject.gcda	6.29 KB	-rw-r--r--	2025-06-04 09:21
fileobject.o	110.28 KB	-rw-r--r--	2025-06-04 09:22
floatobject.c	71.56 KB	-rw-r--r--	2024-03-19 22:46
floatobject.gcda	13 KB	-rw-r--r--	2025-06-04 09:21
floatobject.o	452.61 KB	-rw-r--r--	2025-06-04 09:22
frameobject.c	35.79 KB	-rw-r--r--	2024-03-19 22:46
frameobject.gcda	8.83 KB	-rw-r--r--	2025-06-04 09:21
frameobject.o	199.9 KB	-rw-r--r--	2025-06-04 09:22
funcobject.c	34.36 KB	-rw-r--r--	2024-03-19 22:46
funcobject.gcda	10.05 KB	-rw-r--r--	2025-06-04 09:21
funcobject.o	262.78 KB	-rw-r--r--	2025-06-04 09:22
genericaliasobject.c	18.02 KB	-rw-r--r--	2024-03-19 22:46
genericaliasobject.gcda	6.79 KB	-rw-r--r--	2025-06-04 09:21
genericaliasobject.o	155.11 KB	-rw-r--r--	2025-06-04 09:22
genobject.c	69.94 KB	-rw-r--r--	2024-03-19 22:46
genobject.gcda	12.37 KB	-rw-r--r--	2025-06-04 09:21
genobject.o	327.76 KB	-rw-r--r--	2025-06-04 09:22
interpreteridobject.c	8.74 KB	-rw-r--r--	2024-03-19 22:46
interpreteridobject.gcda	4.75 KB	-rw-r--r--	2025-06-04 09:21
interpreteridobject.o	84.54 KB	-rw-r--r--	2025-06-04 09:22
iterobject.c	16.14 KB	-rw-r--r--	2024-03-19 22:46
iterobject.gcda	6.17 KB	-rw-r--r--	2025-06-04 09:21
iterobject.o	126.71 KB	-rw-r--r--	2025-06-04 09:22
listobject.c	99.53 KB	-rw-r--r--	2024-03-19 22:46
listobject.gcda	18.98 KB	-rw-r--r--	2025-06-04 09:21
listobject.o	739.52 KB	-rw-r--r--	2025-06-04 09:22
listsort.txt	35.31 KB	-rw-r--r--	2024-03-19 22:46
lnotab_notes.txt	8.62 KB	-rw-r--r--	2024-03-19 22:46
longobject.c	174.76 KB	-rw-r--r--	2024-03-19 22:46
longobject.gcda	30.25 KB	-rw-r--r--	2025-06-04 09:21
longobject.o	1.58 MB	-rw-r--r--	2025-06-04 09:22
memoryobject.c	94.86 KB	-rw-r--r--	2024-03-19 22:46
memoryobject.gcda	20.69 KB	-rw-r--r--	2025-06-04 09:21
memoryobject.o	497.3 KB	-rw-r--r--	2025-06-04 09:22
methodobject.c	17.16 KB	-rw-r--r--	2024-03-19 22:46
methodobject.gcda	6.73 KB	-rw-r--r--	2025-06-04 09:21
methodobject.o	172.39 KB	-rw-r--r--	2025-06-04 09:22
moduleobject.c	27.12 KB	-rw-r--r--	2024-03-19 22:46
moduleobject.gcda	10.06 KB	-rw-r--r--	2025-06-04 09:21
moduleobject.o	206.68 KB	-rw-r--r--	2025-06-04 09:22
namespaceobject.c	7.35 KB	-rw-r--r--	2024-03-19 22:46
namespaceobject.gcda	4.75 KB	-rw-r--r--	2025-06-04 09:21
namespaceobject.o	73.17 KB	-rw-r--r--	2025-06-04 09:22
object.c	62.92 KB	-rw-r--r--	2024-03-19 22:46
object.gcda	16.35 KB	-rw-r--r--	2025-06-04 09:21
object.o	427.98 KB	-rw-r--r--	2025-06-04 09:22
obmalloc.c	98.82 KB	-rw-r--r--	2024-03-19 22:46
obmalloc.gcda	13.52 KB	-rw-r--r--	2025-06-04 09:21
obmalloc.o	338.32 KB	-rw-r--r--	2025-06-04 09:22
odictobject.c	73.79 KB	-rw-r--r--	2024-03-19 22:46
odictobject.gcda	11.84 KB	-rw-r--r--	2025-06-04 09:21
odictobject.o	297.43 KB	-rw-r--r--	2025-06-04 09:22
picklebufobject.c	6.03 KB	-rw-r--r--	2024-03-19 22:46
picklebufobject.gcda	4.49 KB	-rw-r--r--	2025-06-04 09:21
picklebufobject.o	54.4 KB	-rw-r--r--	2025-06-04 09:22
rangeobject.c	36.25 KB	-rw-r--r--	2024-03-19 22:46
rangeobject.gcda	8.72 KB	-rw-r--r--	2025-06-04 09:21
rangeobject.o	321.02 KB	-rw-r--r--	2025-06-04 09:22
setobject.c	72.7 KB	-rw-r--r--	2024-03-19 22:46
setobject.gcda	17.04 KB	-rw-r--r--	2025-06-04 09:21
setobject.o	617.43 KB	-rw-r--r--	2025-06-04 09:22
sliceobject.c	19.36 KB	-rw-r--r--	2024-03-19 22:46
sliceobject.gcda	6.45 KB	-rw-r--r--	2025-06-04 09:21
sliceobject.o	146.79 KB	-rw-r--r--	2025-06-04 09:22
structseq.c	16.74 KB	-rw-r--r--	2024-03-19 22:46
structseq.gcda	6.29 KB	-rw-r--r--	2025-06-04 09:21
structseq.o	160.08 KB	-rw-r--r--	2025-06-04 09:22
tupleobject.c	33.24 KB	-rw-r--r--	2024-03-19 22:46
tupleobject.gcda	9.63 KB	-rw-r--r--	2025-06-04 09:21
tupleobject.o	262.6 KB	-rw-r--r--	2025-06-04 09:22
typeobject.c	268.84 KB	-rw-r--r--	2024-03-19 22:46
typeobject.gcda	55.95 KB	-rw-r--r--	2025-06-04 09:21
typeobject.o	1.62 MB	-rw-r--r--	2025-06-04 09:22
typeslots.inc	5.33 KB	-rw-r--r--	2024-03-19 22:46
typeslots.py	1.65 KB	-rwxr-xr-x	2024-03-19 22:46
unicodectype.c	7.49 KB	-rw-r--r--	2024-03-19 22:46
unicodectype.gcda	6.14 KB	-rw-r--r--	2025-06-04 09:21
unicodectype.o	199.91 KB	-rw-r--r--	2025-06-04 09:22
unicodeobject.c	475.94 KB	-rw-r--r--	2024-03-19 22:46
unicodeobject.gcda	108.06 KB	-rw-r--r--	2025-06-04 09:21
unicodeobject.o	3.93 MB	-rw-r--r--	2025-06-04 09:22
unicodetype_db.h	249.58 KB	-rw-r--r--	2024-03-19 22:46
unionobject.c	13.1 KB	-rw-r--r--	2024-03-19 22:46
unionobject.gcda	5.98 KB	-rw-r--r--	2025-06-04 09:21
unionobject.o	139.22 KB	-rw-r--r--	2025-06-04 09:22
weakrefobject.c	31.57 KB	-rw-r--r--	2024-03-19 22:46
weakrefobject.gcda	15.45 KB	-rw-r--r--	2025-06-04 09:21
weakrefobject.o	328.2 KB	-rw-r--r--	2025-06-04 09:22

Rename

/* Iterator objects */

#include "Python.h"
#include "pycore_object.h"

typedef struct {
    PyObject_HEAD
    Py_ssize_t it_index;
    PyObject *it_seq; /* Set to NULL when iterator is exhausted */
} seqiterobject;

_Py_IDENTIFIER(iter);

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;
    if (it->it_index == PY_SSIZE_T_MAX) {
        PyErr_SetString(PyExc_OverflowError,
                        "iter index too large");
        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();
        it->it_seq = NULL;
        Py_DECREF(seq);
    }
    return NULL;
}

static PyObject *
iter_len(seqiterobject *it, PyObject *Py_UNUSED(ignored))
{
    Py_ssize_t seqsize, len;

if (it->it_seq) {
        if (_PyObject_HasLen(it->it_seq)) {
            seqsize = PySequence_Size(it->it_seq);
            if (seqsize == -1)
                return NULL;
        }
        else {
            Py_RETURN_NOTIMPLEMENTED;
        }
        len = seqsize - it->it_index;
        if (len >= 0)
            return PyLong_FromSsize_t(len);
    }
    return PyLong_FromLong(0);
}

PyDoc_STRVAR(length_hint_doc, "Private method returning an estimate of len(list(it)).");

static PyObject *
iter_reduce(seqiterobject *it, PyObject *Py_UNUSED(ignored))
{
    PyObject *iter = _PyEval_GetBuiltinId(&PyId_iter);

/* _PyEval_GetBuiltinId can invoke arbitrary code,
     * call must be before access of iterator pointers.
     * see issue #101765 */

if (it->it_seq != NULL)
        return Py_BuildValue("N(O)n", iter, it->it_seq, it->it_index);
    else
        return Py_BuildValue("N(())", iter);
}

PyDoc_STRVAR(reduce_doc, "Return state information for pickling.");

static PyObject *
iter_setstate(seqiterobject *it, PyObject *state)
{
    Py_ssize_t index = PyLong_AsSsize_t(state);
    if (index == -1 && PyErr_Occurred())
        return NULL;
    if (it->it_seq != NULL) {
        if (index < 0)
            index = 0;
        it->it_index = index;
    }
    Py_RETURN_NONE;
}

PyDoc_STRVAR(setstate_doc, "Set state information for unpickling.");

static PyMethodDef seqiter_methods[] = {
    {"__length_hint__", (PyCFunction)iter_len, METH_NOARGS, length_hint_doc},
    {"__reduce__", (PyCFunction)iter_reduce, METH_NOARGS, reduce_doc},
    {"__setstate__", (PyCFunction)iter_setstate, METH_O, setstate_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_vectorcall_offset */
    0,                                          /* tp_getattr */
    0,                                          /* tp_setattr */
    0,                                          /* tp_as_async */
    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)
{
    PyObject *result;

if (it->it_callable == NULL) {
        return NULL;
    }

result = _PyObject_CallNoArg(it->it_callable);
    if (result != NULL && it->it_sentinel != NULL){
        int ok;

ok = PyObject_RichCompareBool(it->it_sentinel, result, Py_EQ);
        if (ok == 0) {
            return result; /* Common case, fast path */
        }

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);
    }
    Py_XDECREF(result);
    return NULL;
}

static PyObject *
calliter_reduce(calliterobject *it, PyObject *Py_UNUSED(ignored))
{
    PyObject *iter = _PyEval_GetBuiltinId(&PyId_iter);

/* _PyEval_GetBuiltinId can invoke arbitrary code,
     * call must be before access of iterator pointers.
     * see issue #101765 */

if (it->it_callable != NULL && it->it_sentinel != NULL)
        return Py_BuildValue("N(OO)", iter, it->it_callable, it->it_sentinel);
    else
        return Py_BuildValue("N(())", iter);
}

static PyMethodDef calliter_methods[] = {
    {"__reduce__", (PyCFunction)calliter_reduce, METH_NOARGS, reduce_doc},
    {NULL,              NULL}           /* sentinel */
};

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_vectorcall_offset */
    0,                                          /* tp_getattr */
    0,                                          /* tp_setattr */
    0,                                          /* tp_as_async */
    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 */
    calliter_methods,                           /* tp_methods */
};

/* -------------------------------------- */

typedef struct {
    PyObject_HEAD
    PyObject *wrapped;
    PyObject *default_value;
} anextawaitableobject;

static void
anextawaitable_dealloc(anextawaitableobject *obj)
{
    _PyObject_GC_UNTRACK(obj);
    Py_XDECREF(obj->wrapped);
    Py_XDECREF(obj->default_value);
    PyObject_GC_Del(obj);
}

static int
anextawaitable_traverse(anextawaitableobject *obj, visitproc visit, void *arg)
{
    Py_VISIT(obj->wrapped);
    Py_VISIT(obj->default_value);
    return 0;
}

static PyObject *
anextawaitable_getiter(anextawaitableobject *obj)
{
    assert(obj->wrapped != NULL);
    PyObject *awaitable = _PyCoro_GetAwaitableIter(obj->wrapped);
    if (awaitable == NULL) {
        return NULL;
    }
    if (Py_TYPE(awaitable)->tp_iternext == NULL) {
        /* _PyCoro_GetAwaitableIter returns a Coroutine, a Generator,
         * or an iterator. Of these, only coroutines lack tp_iternext.
         */
        assert(PyCoro_CheckExact(awaitable));
        unaryfunc getter = Py_TYPE(awaitable)->tp_as_async->am_await;
        PyObject *new_awaitable = getter(awaitable);
        if (new_awaitable == NULL) {
            Py_DECREF(awaitable);
            return NULL;
        }
        Py_SETREF(awaitable, new_awaitable);
        if (!PyIter_Check(awaitable)) {
            PyErr_SetString(PyExc_TypeError,
                            "__await__ returned a non-iterable");
            Py_DECREF(awaitable);
            return NULL;
        }
    }
    return awaitable;
}

static PyObject *
anextawaitable_iternext(anextawaitableobject *obj)
{
    /* Consider the following class:
     *
     *     class A:
     *         async def __anext__(self):
     *             ...
     *     a = A()
     *
     * Then `await anext(a)` should call
     * a.__anext__().__await__().__next__()
     *
     * On the other hand, given
     *
     *     async def agen():
     *         yield 1
     *         yield 2
     *     gen = agen()
     *
     * Then `await anext(gen)` can just call
     * gen.__anext__().__next__()
     */
    PyObject *awaitable = anextawaitable_getiter(obj);
    if (awaitable == NULL) {
        return NULL;
    }
    PyObject *result = (*Py_TYPE(awaitable)->tp_iternext)(awaitable);
    Py_DECREF(awaitable);
    if (result != NULL) {
        return result;
    }
    if (PyErr_ExceptionMatches(PyExc_StopAsyncIteration)) {
        _PyGen_SetStopIterationValue(obj->default_value);
    }
    return NULL;
}

static PyObject *
anextawaitable_proxy(anextawaitableobject *obj, char *meth, PyObject *arg) {
    PyObject *awaitable = anextawaitable_getiter(obj);
    if (awaitable == NULL) {
        return NULL;
    }
    PyObject *ret = PyObject_CallMethod(awaitable, meth, "O", arg);
    Py_DECREF(awaitable);
    if (ret != NULL) {
        return ret;
    }
    if (PyErr_ExceptionMatches(PyExc_StopAsyncIteration)) {
        /* `anextawaitableobject` is only used by `anext()` when
         * a default value is provided. So when we have a StopAsyncIteration
         * exception we replace it with a `StopIteration(default)`, as if
         * it was the return value of `__anext__()` coroutine.
         */
        _PyGen_SetStopIterationValue(obj->default_value);
    }
    return NULL;
}

static PyObject *
anextawaitable_send(anextawaitableobject *obj, PyObject *arg) {
    return anextawaitable_proxy(obj, "send", arg);
}

static PyObject *
anextawaitable_throw(anextawaitableobject *obj, PyObject *arg) {
    return anextawaitable_proxy(obj, "throw", arg);
}

static PyObject *
anextawaitable_close(anextawaitableobject *obj, PyObject *arg) {
    return anextawaitable_proxy(obj, "close", arg);
}

PyDoc_STRVAR(send_doc,
"send(arg) -> send 'arg' into the wrapped iterator,\n\
return next yielded value or raise StopIteration.");

PyDoc_STRVAR(throw_doc,
"throw(typ[,val[,tb]]) -> raise exception in the wrapped iterator,\n\
return next yielded value or raise StopIteration.");

PyDoc_STRVAR(close_doc,
"close() -> raise GeneratorExit inside generator.");

static PyMethodDef anextawaitable_methods[] = {
    {"send",(PyCFunction)anextawaitable_send, METH_O, send_doc},
    {"throw",(PyCFunction)anextawaitable_throw, METH_VARARGS, throw_doc},
    {"close",(PyCFunction)anextawaitable_close, METH_VARARGS, close_doc},
    {NULL, NULL}        /* Sentinel */
};

static PyAsyncMethods anextawaitable_as_async = {
    PyObject_SelfIter,                          /* am_await */
    0,                                          /* am_aiter */
    0,                                          /* am_anext */
    0,                                          /* am_send  */
};

PyTypeObject _PyAnextAwaitable_Type = {
    PyVarObject_HEAD_INIT(&PyType_Type, 0)
    "anext_awaitable",                          /* tp_name */
    sizeof(anextawaitableobject),               /* tp_basicsize */
    0,                                          /* tp_itemsize */
    /* methods */
    (destructor)anextawaitable_dealloc,         /* tp_dealloc */
    0,                                          /* tp_vectorcall_offset */
    0,                                          /* tp_getattr */
    0,                                          /* tp_setattr */
    &anextawaitable_as_async,                   /* tp_as_async */
    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)anextawaitable_traverse,      /* tp_traverse */
    0,                                          /* tp_clear */
    0,                                          /* tp_richcompare */
    0,                                          /* tp_weaklistoffset */
    PyObject_SelfIter,                          /* tp_iter */
    (unaryfunc)anextawaitable_iternext,         /* tp_iternext */
    anextawaitable_methods,                     /* tp_methods */
};

PyObject *
PyAnextAwaitable_New(PyObject *awaitable, PyObject *default_value)
{
    anextawaitableobject *anext = PyObject_GC_New(
            anextawaitableobject, &_PyAnextAwaitable_Type);
    if (anext == NULL) {
        return NULL;
    }
    Py_INCREF(awaitable);
    anext->wrapped = awaitable;
    Py_INCREF(default_value);
    anext->default_value = default_value;
    _PyObject_GC_TRACK(anext);
    return (PyObject *)anext;
}