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authorAllan McRae <allan@archlinux.org>2011-07-04 11:17:12 +1000
committerDan McGee <dan@archlinux.org>2011-07-05 10:22:11 -0500
commit24324ff0e12a3e19cada669a4c5c391e486790a3 (patch)
treebb211091670af259881bd326d5e034efea7eae26 /lib/libalpm/alpm_list.c
parent97103f860d48e1f6f9c0dd7c75568618f8ed5163 (diff)
Simplify alpm_list_previous
We can readily detect the first node in a list by checking if node->prev->next is NULL. So there is no need to pass the head of the list to this function and its prototype now looks like all the other item accessors. Signed-off-by: Allan McRae <allan@archlinux.org> Signed-off-by: Dan McGee <dan@archlinux.org>
Diffstat (limited to 'lib/libalpm/alpm_list.c')
-rw-r--r--lib/libalpm/alpm_list.c7
1 files changed, 3 insertions, 4 deletions
diff --git a/lib/libalpm/alpm_list.c b/lib/libalpm/alpm_list.c
index 38cefa62..071cd994 100644
--- a/lib/libalpm/alpm_list.c
+++ b/lib/libalpm/alpm_list.c
@@ -547,11 +547,10 @@ inline alpm_list_t SYMEXPORT *alpm_list_next(const alpm_list_t *node)
*
* @return the previous element, or NULL when no previous element exist
*/
-inline alpm_list_t SYMEXPORT *alpm_list_previous(const alpm_list_t *list,
- const alpm_list_t *node)
+inline alpm_list_t SYMEXPORT *alpm_list_previous(const alpm_list_t *list)
{
- if(node && node != list) {
- return node->prev;
+ if(list && list->prev->next) {
+ return list->prev;
} else {
return NULL;
}