From 82d947a8321737108f545a25f91d7d50d10e831d Mon Sep 17 00:00:00 2001
From: dimitri staessens <dimitri.staessens@intec.ugent.be>
Date: Fri, 20 Jan 2017 12:57:18 +0100
Subject: lib: Add move operation for lists

Allows moving the elements of one linked list to
another. Re-initializes the source list.
---
 include/ouroboros/list.h |  3 +++
 src/lib/list.c           | 11 +++++++++++
 2 files changed, 14 insertions(+)

diff --git a/include/ouroboros/list.h b/include/ouroboros/list.h
index 824e6684..5f246775 100644
--- a/include/ouroboros/list.h
+++ b/include/ouroboros/list.h
@@ -54,6 +54,9 @@ void list_add_tail(struct list_head * e,
 
 void list_del(struct list_head * e);
 
+void list_move(struct list_head * dst,
+               struct list_head * src);
+
 bool list_is_empty(struct list_head * h);
 
 #endif
diff --git a/src/lib/list.c b/src/lib/list.c
index 908d3b71..01fdf6e3 100644
--- a/src/lib/list.c
+++ b/src/lib/list.c
@@ -70,3 +70,14 @@ bool list_is_empty(struct list_head * h)
 {
         return h->nxt == h;
 }
+
+void list_move(struct list_head * dst,
+               struct list_head * src)
+{
+        dst->nxt = src->nxt;
+        dst->prv = src->prv;
+        dst->nxt->prv = src->nxt->prv;
+        dst->prv->nxt = src->prv->nxt;
+
+        list_head_init(src);
+}
-- 
cgit v1.2.3