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#ifndef _MULTIDICT_ITER_H
#define _MULTIDICT_ITER_H
#ifdef __cplusplus
extern "C" {
#endif
static PyTypeObject multidict_items_iter_type;
static PyTypeObject multidict_values_iter_type;
static PyTypeObject multidict_keys_iter_type;
typedef struct multidict_iter {
PyObject_HEAD
MultiDictObject *md; // MultiDict or CIMultiDict
Py_ssize_t current;
uint64_t version;
} MultidictIter;
static inline void
_init_iter(MultidictIter *it, MultiDictObject *md)
{
Py_INCREF(md);
it->md = md;
it->current = 0;
it->version = pair_list_version(&md->pairs);
}
static inline PyObject *
multidict_items_iter_new(MultiDictObject *md)
{
MultidictIter *it = PyObject_GC_New(
MultidictIter, &multidict_items_iter_type);
if (it == NULL) {
return NULL;
}
_init_iter(it, md);
PyObject_GC_Track(it);
return (PyObject *)it;
}
static inline PyObject *
multidict_keys_iter_new(MultiDictObject *md)
{
MultidictIter *it = PyObject_GC_New(
MultidictIter, &multidict_keys_iter_type);
if (it == NULL) {
return NULL;
}
_init_iter(it, md);
PyObject_GC_Track(it);
return (PyObject *)it;
}
static inline PyObject *
multidict_values_iter_new(MultiDictObject *md)
{
MultidictIter *it = PyObject_GC_New(
MultidictIter, &multidict_values_iter_type);
if (it == NULL) {
return NULL;
}
_init_iter(it, md);
PyObject_GC_Track(it);
return (PyObject *)it;
}
static inline PyObject *
multidict_items_iter_iternext(MultidictIter *self)
{
PyObject *key = NULL;
PyObject *value = NULL;
PyObject *ret = NULL;
if (self->version != pair_list_version(&self->md->pairs)) {
PyErr_SetString(PyExc_RuntimeError, "Dictionary changed during iteration");
return NULL;
}
if (!_pair_list_next(&self->md->pairs, &self->current, NULL, &key, &value, NULL)) {
PyErr_SetNone(PyExc_StopIteration);
return NULL;
}
ret = PyTuple_Pack(2, key, value);
if (ret == NULL) {
return NULL;
}
return ret;
}
static inline PyObject *
multidict_values_iter_iternext(MultidictIter *self)
{
PyObject *value = NULL;
if (self->version != pair_list_version(&self->md->pairs)) {
PyErr_SetString(PyExc_RuntimeError, "Dictionary changed during iteration");
return NULL;
}
if (!pair_list_next(&self->md->pairs, &self->current, NULL, NULL, &value)) {
PyErr_SetNone(PyExc_StopIteration);
return NULL;
}
Py_INCREF(value);
return value;
}
static inline PyObject *
multidict_keys_iter_iternext(MultidictIter *self)
{
PyObject *key = NULL;
if (self->version != pair_list_version(&self->md->pairs)) {
PyErr_SetString(PyExc_RuntimeError, "Dictionary changed during iteration");
return NULL;
}
if (!pair_list_next(&self->md->pairs, &self->current, NULL, &key, NULL)) {
PyErr_SetNone(PyExc_StopIteration);
return NULL;
}
Py_INCREF(key);
return key;
}
static inline void
multidict_iter_dealloc(MultidictIter *self)
{
PyObject_GC_UnTrack(self);
Py_XDECREF(self->md);
PyObject_GC_Del(self);
}
static inline int
multidict_iter_traverse(MultidictIter *self, visitproc visit, void *arg)
{
Py_VISIT(self->md);
return 0;
}
static inline int
multidict_iter_clear(MultidictIter *self)
{
Py_CLEAR(self->md);
return 0;
}
static inline PyObject *
multidict_iter_len(MultidictIter *self)
{
return PyLong_FromLong(pair_list_len(&self->md->pairs));
}
PyDoc_STRVAR(length_hint_doc,
"Private method returning an estimate of len(list(it)).");
static PyMethodDef multidict_iter_methods[] = {
{
"__length_hint__",
(PyCFunction)(void(*)(void))multidict_iter_len,
METH_NOARGS,
length_hint_doc
},
{
NULL,
NULL
} /* sentinel */
};
/***********************************************************************/
static PyTypeObject multidict_items_iter_type = {
PyVarObject_HEAD_INIT(DEFERRED_ADDRESS(&PyType_Type), 0)
"multidict._multidict._itemsiter", /* tp_name */
sizeof(MultidictIter), /* tp_basicsize */
.tp_dealloc = (destructor)multidict_iter_dealloc,
.tp_flags = Py_TPFLAGS_DEFAULT | Py_TPFLAGS_HAVE_GC,
.tp_traverse = (traverseproc)multidict_iter_traverse,
.tp_clear = (inquiry)multidict_iter_clear,
.tp_iter = PyObject_SelfIter,
.tp_iternext = (iternextfunc)multidict_items_iter_iternext,
.tp_methods = multidict_iter_methods,
};
static PyTypeObject multidict_values_iter_type = {
PyVarObject_HEAD_INIT(DEFERRED_ADDRESS(&PyType_Type), 0)
"multidict._multidict._valuesiter", /* tp_name */
sizeof(MultidictIter), /* tp_basicsize */
.tp_dealloc = (destructor)multidict_iter_dealloc,
.tp_flags = Py_TPFLAGS_DEFAULT | Py_TPFLAGS_HAVE_GC,
.tp_traverse = (traverseproc)multidict_iter_traverse,
.tp_clear = (inquiry)multidict_iter_clear,
.tp_iter = PyObject_SelfIter,
.tp_iternext = (iternextfunc)multidict_values_iter_iternext,
.tp_methods = multidict_iter_methods,
};
static PyTypeObject multidict_keys_iter_type = {
PyVarObject_HEAD_INIT(DEFERRED_ADDRESS(&PyType_Type), 0)
"multidict._multidict._keysiter", /* tp_name */
sizeof(MultidictIter), /* tp_basicsize */
.tp_dealloc = (destructor)multidict_iter_dealloc,
.tp_flags = Py_TPFLAGS_DEFAULT | Py_TPFLAGS_HAVE_GC,
.tp_traverse = (traverseproc)multidict_iter_traverse,
.tp_clear = (inquiry)multidict_iter_clear,
.tp_iter = PyObject_SelfIter,
.tp_iternext = (iternextfunc)multidict_keys_iter_iternext,
.tp_methods = multidict_iter_methods,
};
static inline int
multidict_iter_init()
{
if (PyType_Ready(&multidict_items_iter_type) < 0 ||
PyType_Ready(&multidict_values_iter_type) < 0 ||
PyType_Ready(&multidict_keys_iter_type) < 0) {
return -1;
}
return 0;
}
#ifdef __cplusplus
}
#endif
#endif