objlist: Support list slice deletion.
diff --git a/py/objlist.c b/py/objlist.c
index 4432b24..9e30ebb 100644
--- a/py/objlist.c
+++ b/py/objlist.c
@@ -153,6 +153,24 @@
STATIC mp_obj_t list_subscr(mp_obj_t self_in, mp_obj_t index, mp_obj_t value) {
if (value == MP_OBJ_NULL) {
// delete
+#if MICROPY_ENABLE_SLICE
+ if (MP_OBJ_IS_TYPE(index, &mp_type_slice)) {
+ mp_obj_list_t *self = self_in;
+ machine_uint_t start, stop;
+ if (!mp_seq_get_fast_slice_indexes(self->len, index, &start, &stop)) {
+ assert(0);
+ }
+
+ int len_adj = start - stop;
+ //printf("Len adj: %d\n", len_adj);
+ assert(len_adj <= 0);
+ mp_seq_replace_slice_no_grow(self->items, self->len, start, stop, self->items/*NULL*/, 0, mp_obj_t);
+ // Clear "freed" elements at the end of list
+ mp_seq_clear(self->items, self->len + len_adj, self->len, sizeof(*self->items));
+ self->len += len_adj;
+ return mp_const_none;
+ }
+#endif
mp_obj_t args[2] = {self_in, index};
list_pop(2, args);
return mp_const_none;