// returns false if arg is not of integral type
// returns true and sets *value if it is of integral type
// can throw OverflowError if arg is of integral type, but doesn't fit in a mp_int_t
bool mp_obj_get_int_maybe(mp_const_obj_t arg, mp_int_t *value) {
if (arg == mp_const_false) {
*value = 0;
} else if (arg == mp_const_true) {
*value = 1;
} else if (MP_OBJ_IS_SMALL_INT(arg)) {
*value = MP_OBJ_SMALL_INT_VALUE(arg);
} else if (MP_OBJ_IS_TYPE(arg, &mp_type_int)) {
*value = mp_obj_int_get_checked(arg);
} else {
return false;
}
return true;
}
machine_int_t mp_obj_get_int(mp_obj_t arg) {
// This function essentially performs implicit type conversion to int
// Note that Python does NOT provide implicit type conversion from
// float to int in the core expression language, try some_list[1.0].
if (arg == mp_const_false) {
return 0;
} else if (arg == mp_const_true) {
return 1;
} else if (MP_OBJ_IS_SMALL_INT(arg)) {
return MP_OBJ_SMALL_INT_VALUE(arg);
} else if (MP_OBJ_IS_TYPE(arg, &mp_type_int)) {
return mp_obj_int_get_checked(arg);
} else {
nlr_raise(mp_obj_new_exception_msg_varg(&mp_type_TypeError, "can't convert %s to int", mp_obj_get_type_str(arg)));
}
}