STATIC void namedtuple_load_attr(mp_obj_t self_in, qstr attr, mp_obj_t *dest) {
mp_obj_namedtuple_t *self = self_in;
const char *fields = ((mp_obj_namedtuple_type_t*)self->tuple.base.type)->fields;
int id = namedtuple_find_field(qstr_str(attr), fields);
if (id < 0) {
return;
}
dest[0] = self->tuple.items[id];
}
STATIC mp_obj_t namedtuple_make_new(const mp_obj_type_t *type_in, size_t n_args, size_t n_kw, const mp_obj_t *args) {
const mp_obj_namedtuple_type_t *type = (const mp_obj_namedtuple_type_t*)type_in;
size_t num_fields = type->n_fields;
if (n_args + n_kw != num_fields) {
if (MICROPY_ERROR_REPORTING == MICROPY_ERROR_REPORTING_TERSE) {
mp_arg_error_terse_mismatch();
} else if (MICROPY_ERROR_REPORTING == MICROPY_ERROR_REPORTING_NORMAL) {
nlr_raise(mp_obj_new_exception_msg_varg(&mp_type_TypeError,
"function takes %d positional arguments but %d were given",
num_fields, n_args + n_kw));
} else if (MICROPY_ERROR_REPORTING == MICROPY_ERROR_REPORTING_DETAILED) {
nlr_raise(mp_obj_new_exception_msg_varg(&mp_type_TypeError,
"%q() takes %d positional arguments but %d were given",
type->base.name, num_fields, n_args + n_kw));
}
}
mp_obj_t *arg_objects;
if (n_args == num_fields) {
arg_objects = (mp_obj_t*)args;
} else {
size_t alloc_size = sizeof(mp_obj_t) * num_fields;
arg_objects = alloca(alloc_size);
memset(arg_objects, 0, alloc_size);
for (mp_uint_t i = 0; i < n_args; i++) {
arg_objects[i] = args[i];
}
for (mp_uint_t i = n_args; i < n_args + 2 * n_kw; i += 2) {
qstr kw = mp_obj_str_get_qstr(args[i]);
int id = namedtuple_find_field(type, kw);
if (id == -1) {
if (MICROPY_ERROR_REPORTING == MICROPY_ERROR_REPORTING_TERSE) {
mp_arg_error_terse_mismatch();
} else {
nlr_raise(mp_obj_new_exception_msg_varg(&mp_type_TypeError,
"unexpected keyword argument '%q'", kw));
}
}
if (arg_objects[id] != MP_OBJ_NULL) {
if (MICROPY_ERROR_REPORTING == MICROPY_ERROR_REPORTING_TERSE) {
mp_arg_error_terse_mismatch();
} else {
nlr_raise(mp_obj_new_exception_msg_varg(&mp_type_TypeError,
"function got multiple values for argument '%q'", kw));
}
}
arg_objects[id] = args[i + 1];
}
}
mp_obj_tuple_t *tuple = MP_OBJ_TO_PTR(mp_obj_new_tuple(num_fields, arg_objects));
tuple->base.type = type_in;
return MP_OBJ_FROM_PTR(tuple);
}
STATIC void namedtuple_attr(mp_obj_t self_in, qstr attr, mp_obj_t *dest) {
if (dest[0] == MP_OBJ_NULL) {
// load attribute
mp_obj_namedtuple_t *self = MP_OBJ_TO_PTR(self_in);
int id = namedtuple_find_field((mp_obj_namedtuple_type_t*)self->tuple.base.type, attr);
if (id == -1) {
return;
}
dest[0] = self->tuple.items[id];
} else {
// delete/store attribute
// provide more detailed error message than we'd get by just returning
mp_raise_msg(&mp_type_AttributeError, "can't set attribute");
}
}