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py: Refactor slice helpers, preparing to support arbitrary slicing.

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This commit is contained in:
Paul Sokolovsky
2014-05-25 21:21:57 +03:00
parent ff4b6daa4f
commit de4b9329f9
6 changed files with 46 additions and 33 deletions
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8
py/objtuple.c
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@@ -163,12 +163,12 @@ mp_obj_t mp_obj_tuple_subscr(mp_obj_t self_in, mp_obj_t index, mp_obj_t value) {
mp_obj_tuple_t *self = self_in;
#if MICROPY_PY_SLICE
if (MP_OBJ_IS_TYPE(index, &mp_type_slice)) {
machine_uint_t start, stop;
if (!mp_seq_get_fast_slice_indexes(self->len, index, &start, &stop)) {
mp_bound_slice_t slice;
if (!mp_seq_get_fast_slice_indexes(self->len, index, &slice)) {
assert(0);
}
mp_obj_tuple_t *res = mp_obj_new_tuple(stop - start, NULL);
mp_seq_copy(res->items, self->items + start, res->len, mp_obj_t);
mp_obj_tuple_t *res = mp_obj_new_tuple(slice.stop - slice.start, NULL);
mp_seq_copy(res->items, self->items + slice.start, res->len, mp_obj_t);
return res;
}
#endif