1.1 --- a/src/list.c Wed Feb 08 20:26:26 2023 +0100
1.2 +++ b/src/list.c Wed Feb 15 16:48:11 2023 +0100
1.3 @@ -149,9 +149,10 @@
1.4
1.5 static struct cx_iterator_s cx_pl_iterator(
1.6 struct cx_list_s const *list,
1.7 - size_t index
1.8 + size_t index,
1.9 + bool backwards
1.10 ) {
1.11 - struct cx_iterator_s iter = list->climpl->iterator(list, index);
1.12 + struct cx_iterator_s iter = list->climpl->iterator(list, index, backwards);
1.13 iter.base.current_impl = iter.base.current;
1.14 iter.base.current = cx_pl_iter_current;
1.15 return iter;
1.16 @@ -194,14 +195,14 @@
1.17 void cxListDestroy(CxList *list) {
1.18 switch (list->content_destructor_type) {
1.19 case CX_DESTRUCTOR_SIMPLE: {
1.20 - CxIterator iter = cxListBegin(list);
1.21 + CxIterator iter = cxListIterator(list);
1.22 cx_foreach(void*, elem, iter) {
1.23 list->simple_destructor(elem);
1.24 }
1.25 break;
1.26 }
1.27 case CX_DESTRUCTOR_ADVANCED: {
1.28 - CxIterator iter = cxListBegin(list);
1.29 + CxIterator iter = cxListIterator(list);
1.30 cx_foreach(void*, elem, iter) {
1.31 list->advanced_destructor.func(list->advanced_destructor.data, elem);
1.32 }
1.33 @@ -225,8 +226,8 @@
1.34 } else {
1.35 // different compare functions, use iterator
1.36 if (list->size == other->size) {
1.37 - CxIterator left = cxListBegin(list);
1.38 - CxIterator right = cxListBegin(other);
1.39 + CxIterator left = cxListIterator(list);
1.40 + CxIterator right = cxListIterator(other);
1.41 for (size_t i = 0; i < list->size; i++) {
1.42 void *leftValue = cxIteratorCurrent(left);
1.43 void *rightValue = cxIteratorCurrent(right);
1.44 @@ -244,11 +245,11 @@
1.45 }
1.46 }
1.47
1.48 -CxMutIterator cxListMutIterator(
1.49 +CxMutIterator cxListMutIteratorAt(
1.50 CxList *list,
1.51 size_t index
1.52 ) {
1.53 - CxIterator it = list->cl->iterator(list, index);
1.54 + CxIterator it = list->cl->iterator(list, index, false);
1.55 it.base.mutating = true;
1.56
1.57 // we know the iterators share the same memory layout
1.58 @@ -256,3 +257,16 @@
1.59 memcpy(&iter, &it, sizeof(CxMutIterator));
1.60 return iter;
1.61 }
1.62 +
1.63 +CxMutIterator cxListMutBackwardsIteratorAt(
1.64 + CxList *list,
1.65 + size_t index
1.66 +) {
1.67 + CxIterator it = list->cl->iterator(list, index, true);
1.68 + it.base.mutating = true;
1.69 +
1.70 + // we know the iterators share the same memory layout
1.71 + CxMutIterator iter;
1.72 + memcpy(&iter, &it, sizeof(CxMutIterator));
1.73 + return iter;
1.74 +}
