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Bug 1071: Add precautionary assertions and recovery

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This commit is contained in:
Kalle Olavi Niemitalo 2009-04-05 20:59:41 +03:00 committed by Kalle Olavi Niemitalo
parent b7f45ca80b
commit b4567b402b
1 changed files with 19 additions and 0 deletions
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19
src/dom/node.c
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@ -233,6 +233,7 @@ get_dom_node_list_pos(struct dom_node_list *list, struct dom_node *node)
int i;
assert(list);
if_assert_failed return -1;
foreach_dom_node (list, entry, i) {
if (entry == node)
@ -257,11 +258,20 @@ get_dom_node_prev(struct dom_node *node)
int index;
assert(node->parent);
if_assert_failed return NULL;
list = get_dom_node_list(node->parent, node);
/* node->parent != NULL, so the node must be in the
* appropriate list of the parent; the list thus cannot be
* empty. */
if (!list) return NULL;
assert(*list);
if_assert_failed return NULL;
index = get_dom_node_list_pos(*list, node);
assert(index >= 0); /* in particular, not -1 */
if_assert_failed return NULL;
if (index > 0)
return (*list)->entries[index - 1];
@ -275,11 +285,20 @@ get_dom_node_next(struct dom_node *node)
int index;
assert(node->parent);
if_assert_failed return NULL;
list = get_dom_node_list(node->parent, node);
/* node->parent != NULL, so the node must be in the
* appropriate list of the parent; the list thus cannot be
* empty. */
if (!list) return NULL;
assert(*list);
if_assert_failed return NULL;
index = get_dom_node_list_pos(*list, node);
assert(index >= 0); /* in particular, not -1 */
if_assert_failed return NULL;
if (index + 1 < (*list)->size)
return (*list)->entries[index + 1];