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py: Add MP_OBJ_STOP_ITERATION and make good use of it.

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Also make consistent use of MP_OBJ_NOT_SUPPORTED and MP_OBJ_NULL.
This helps a lot in debugging and understanding of function API.
This commit is contained in:
Damien George
2014-04-17 23:19:36 +01:00
parent 1e935d8689
commit ea8d06c39d
28 changed files with 130 additions and 121 deletions
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4
py/objfilter.c
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@@ -30,7 +30,7 @@ STATIC mp_obj_t filter_iternext(mp_obj_t self_in) {
assert(MP_OBJ_IS_TYPE(self_in, &mp_type_filter));
mp_obj_filter_t *self = self_in;
mp_obj_t next;
while ((next = mp_iternext(self->iter)) != MP_OBJ_NULL) {
while ((next = mp_iternext(self->iter)) != MP_OBJ_STOP_ITERATION) {
mp_obj_t val;
if (self->fun != mp_const_none) {
val = mp_call_function_n_kw(self->fun, 1, 0, &next);
@@ -41,7 +41,7 @@ STATIC mp_obj_t filter_iternext(mp_obj_t self_in) {
return next;
}
}
return MP_OBJ_NULL;
return MP_OBJ_STOP_ITERATION;
}
const mp_obj_type_t mp_type_filter = {