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Implements list.reverse; fixes issue #66

This commit is contained in:
John R. Lenton 2014-01-04 02:10:29 +00:00
parent 49fb6e53b3
commit 6e1e98f864
2 changed files with 21 additions and 0 deletions
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16
py/objlist.c
View File

@ -207,6 +207,20 @@ 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);
@ -215,6 +229,7 @@ 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 = {
@ -235,6 +250,7 @@ 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
},

5
tests/basics/tests/list_reverse.py Normal file
View File

@ -0,0 +1,5 @@
a = []
for i in range(100):
a.append(i)
a.reverse()
print(a)