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py: Implement 'not' in compiler, and improve rt_is_true.

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Damien George
2014-01-28 23:27:35 +00:00
parent b40892d266
commit e4b6a079b3
3 changed files with 26 additions and 17 deletions
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27
py/runtime.c
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@@ -315,23 +315,18 @@ int rt_is_true(mp_obj_t arg) {
return 0;
} else if (arg == mp_const_true) {
return 1;
} else if (MP_OBJ_IS_STR(arg)) {
return mp_obj_str_get_len(arg) != 0;
} else if (MP_OBJ_IS_TYPE(arg, &list_type)) {
uint len;
mp_obj_t *dummy;
mp_obj_list_get(arg, &len, &dummy);
return len != 0;
} else if (MP_OBJ_IS_TYPE(arg, &tuple_type)) {
uint len;
mp_obj_t *dummy;
mp_obj_tuple_get(arg, &len, &dummy);
return len != 0;
} else if (MP_OBJ_IS_TYPE(arg, &dict_type)) {
return mp_obj_dict_len(arg) != 0;
} else {
assert(0);
return 0;
mp_obj_t len = mp_obj_len_maybe(arg);
if (len != MP_OBJ_NULL) {
// obj has a length, truth determined if len != 0
return len != MP_OBJ_NEW_SMALL_INT(0);
} else {
// TODO check for __bool__ method
// TODO check floats and complex numbers
// any other obj is true (TODO is that correct?)
return 1;
}
}
}