Merge branch 'feature-list-insert'

1 files changed, 28 insertions, 0 deletions

diff --git a/list.c b/list.c
index 18465b0..da0c702 100644
--- a/list.c
+++ b/list.c
@@ -32,6 +32,22 @@ list_add(struct list_item *next, T data)
         return new_item;
 }
 
+void
+list_insert_next(struct list_item *list, T data)
+{
+        struct list_item *new_item;
+
+        new_item = malloc(sizeof *new_item);
+        if ( new_item != NULL ) {
+                new_item->data = data;
+
+                new_item->next = list->next;
+                list->next     = new_item;
+        }
+        else
+                ERROR("out of memory");
+}
+
 struct list_item *
 list_delete(struct list_item *list, T data)
 {
@@ -56,6 +72,18 @@ list_delete(struct list_item *list, T data)
         return list;
 }
 
+void
+list_delete_next(struct list_item *list)
+{
+        if ( list->next != NULL ) {
+                struct list_item *temp = list->next;
+
+                list->next = list->next->next;
+
+                free(temp);
+        }
+}
+
 size_t
 list_length(struct list_item *list)
 {