STATIC mp_obj_t set_make_new(mp_obj_t type_in, uint n_args, uint n_kw, const mp_obj_t *args) {
mp_arg_check_num(n_args, n_kw, 0, 1, false);
switch (n_args) {
case 0: {
// create a new, empty set
mp_obj_set_t *set = mp_obj_new_set(0, NULL);
// set actual set/frozenset type
set->base.type = type_in;
return set;
}
case 1:
default: { // can only be 0 or 1 arg
// 1 argument, an iterable from which we make a new set
mp_obj_set_t *set = mp_obj_new_set(0, NULL);
mp_obj_t iterable = mp_getiter(args[0]);
mp_obj_t item;
while ((item = mp_iternext(iterable)) != MP_OBJ_STOP_ITERATION) {
mp_obj_set_store(set, item);
}
// Set actual set/frozenset type
set->base.type = type_in;
return set;
}
}
}
STATIC mp_obj_t set_intersect_int(mp_obj_t self_in, mp_obj_t other, bool update) {
assert(MP_OBJ_IS_TYPE(self_in, &mp_type_set));
if (self_in == other) {
return update ? mp_const_none : set_copy(self_in);
}
mp_obj_set_t *self = self_in;
mp_obj_set_t *out = mp_obj_new_set(0, NULL);
mp_obj_t iter = mp_getiter(other);
mp_obj_t next;
while ((next = mp_iternext(iter)) != MP_OBJ_STOP_ITERATION) {
if (mp_set_lookup(&self->set, next, MP_MAP_LOOKUP)) {
set_add(out, next);
}
}
if (update) {
m_del(mp_obj_t, self->set.table, self->set.alloc);
self->set.alloc = out->set.alloc;
self->set.used = out->set.used;
self->set.table = out->set.table;
}
return update ? mp_const_none : out;
}
STATIC mp_obj_t set_intersect_int(mp_obj_t self_in, mp_obj_t other, bool update) {
if (update) {
check_set(self_in);
} else {
check_set_or_frozenset(self_in);
}
if (self_in == other) {
return update ? mp_const_none : set_copy(self_in);
}
mp_obj_set_t *self = MP_OBJ_TO_PTR(self_in);
mp_obj_set_t *out = MP_OBJ_TO_PTR(mp_obj_new_set(0, NULL));
mp_obj_t iter = mp_getiter(other, NULL);
mp_obj_t next;
while ((next = mp_iternext(iter)) != MP_OBJ_STOP_ITERATION) {
if (mp_set_lookup(&self->set, next, MP_MAP_LOOKUP)) {
set_add(MP_OBJ_FROM_PTR(out), next);
}
}
if (update) {
m_del(mp_obj_t, self->set.table, self->set.alloc);
self->set.alloc = out->set.alloc;
self->set.used = out->set.used;
self->set.table = out->set.table;
}
return update ? mp_const_none : MP_OBJ_FROM_PTR(out);
}
STATIC mp_obj_t set_make_new(mp_obj_t type_in, uint n_args, uint n_kw, const mp_obj_t *args) {
// TODO check n_kw == 0
switch (n_args) {
case 0:
// return a new, empty set
return mp_obj_new_set(0, NULL);
case 1:
{
// 1 argument, an iterable from which we make a new set
mp_obj_t set = mp_obj_new_set(0, NULL);
mp_obj_t iterable = mp_getiter(args[0]);
mp_obj_t item;
while ((item = mp_iternext(iterable)) != MP_OBJ_STOP_ITERATION) {
mp_obj_set_store(set, item);
}
return set;
}
default:
nlr_raise(mp_obj_new_exception_msg_varg(&mp_type_TypeError, "set takes at most 1 argument, %d given", n_args));
}
}