STATIC mp_obj_t btree_binary_op(mp_uint_t op, mp_obj_t lhs_in, mp_obj_t rhs_in) {
mp_obj_btree_t *self = MP_OBJ_TO_PTR(lhs_in);
switch (op) {
case MP_BINARY_OP_IN: {
mp_uint_t v;
DBT key, val;
key.data = (void*)mp_obj_str_get_data(rhs_in, &v);
key.size = v;
int res = __bt_get(self->db, &key, &val, 0);
CHECK_ERROR(res);
return mp_obj_new_bool(res != RET_SPECIAL);
}
default:
// op not supported
return MP_OBJ_NULL;
}
}
STATIC mp_obj_t btree_get(size_t n_args, const mp_obj_t *args) {
mp_obj_btree_t *self = MP_OBJ_TO_PTR(args[0]);
DBT key, val;
// Different ports may have different type sizes
mp_uint_t v;
key.data = (void*)mp_obj_str_get_data(args[1], &v);
key.size = v;
int res = __bt_get(self->db, &key, &val, 0);
if (res == RET_SPECIAL) {
if (n_args > 2) {
return args[2];
} else {
return mp_const_none;
}
}
CHECK_ERROR(res);
return mp_obj_new_bytes(val.data, val.size);
}
STATIC mp_obj_t btree_subscr(mp_obj_t self_in, mp_obj_t index, mp_obj_t value) {
mp_obj_btree_t *self = MP_OBJ_TO_PTR(self_in);
// Different ports may have different type sizes
mp_uint_t v;
if (value == MP_OBJ_NULL) {
// delete
DBT key;
key.data = (void*)mp_obj_str_get_data(index, &v);
key.size = v;
int res = __bt_delete(self->db, &key, 0);
if (res == RET_SPECIAL) {
nlr_raise(mp_obj_new_exception(&mp_type_KeyError));
}
CHECK_ERROR(res);
return mp_const_none;
} else if (value == MP_OBJ_SENTINEL) {
// load
DBT key, val;
key.data = (void*)mp_obj_str_get_data(index, &v);
key.size = v;
int res = __bt_get(self->db, &key, &val, 0);
if (res == RET_SPECIAL) {
nlr_raise(mp_obj_new_exception(&mp_type_KeyError));
}
CHECK_ERROR(res);
return mp_obj_new_bytes(val.data, val.size);
} else {
// store
DBT key, val;
key.data = (void*)mp_obj_str_get_data(index, &v);
key.size = v;
val.data = (void*)mp_obj_str_get_data(value, &v);
val.size = v;
int res = __bt_put(self->db, &key, &val, 0);
CHECK_ERROR(res);
return mp_const_none;
}
}
