diff options
| -rw-r--r-- | py/objlist.c | 16 | ||||
| -rw-r--r-- | tests/basics/tests/list_reverse.py | 5 |
2 files changed, 21 insertions, 0 deletions
diff --git a/py/objlist.c b/py/objlist.c index dc7ff3e176..02a6b1525b 100644 --- a/py/objlist.c +++ b/py/objlist.c @@ -235,6 +235,20 @@ static mp_obj_t list_remove(mp_obj_t self_in, mp_obj_t value) { return mp_const_none; } +static mp_obj_t list_reverse(mp_obj_t self_in) { + assert(MP_OBJ_IS_TYPE(self_in, &list_type)); + mp_obj_list_t *self = self_in; + + int len = self->len; + for (int i = 0; i < len/2; i++) { + mp_obj_t *a = self->items[i]; + self->items[i] = self->items[len-i-1]; + self->items[len-i-1] = a; + } + + return mp_const_none; +} + static MP_DEFINE_CONST_FUN_OBJ_2(list_append_obj, mp_obj_list_append); static MP_DEFINE_CONST_FUN_OBJ_1(list_clear_obj, list_clear); static MP_DEFINE_CONST_FUN_OBJ_1(list_copy_obj, list_copy); @@ -243,6 +257,7 @@ static MP_DEFINE_CONST_FUN_OBJ_VAR_BETWEEN(list_index_obj, 2, 4, list_index); static MP_DEFINE_CONST_FUN_OBJ_3(list_insert_obj, list_insert); static MP_DEFINE_CONST_FUN_OBJ_VAR_BETWEEN(list_pop_obj, 1, 2, list_pop); static MP_DEFINE_CONST_FUN_OBJ_2(list_remove_obj, list_remove); +static MP_DEFINE_CONST_FUN_OBJ_1(list_reverse_obj, list_reverse); static MP_DEFINE_CONST_FUN_OBJ_2(list_sort_obj, list_sort); const mp_obj_type_t list_type = { @@ -262,6 +277,7 @@ const mp_obj_type_t list_type = { { "insert", &list_insert_obj }, { "pop", &list_pop_obj }, { "remove", &list_remove_obj }, + { "reverse", &list_reverse_obj }, { "sort", &list_sort_obj }, { NULL, NULL }, // end-of-list sentinel }, diff --git a/tests/basics/tests/list_reverse.py b/tests/basics/tests/list_reverse.py new file mode 100644 index 0000000000..38acf1fd61 --- /dev/null +++ b/tests/basics/tests/list_reverse.py @@ -0,0 +1,5 @@ +a = [] +for i in range(100): + a.append(i) + a.reverse() +print(a) |