# HG changeset patch
# User Olaf Wintermann <olaf.wintermann@gmail.com>
# Date 1632663838 -7200
# Node ID dcf01bb852f4a7eed4dc1c49905b1890127fa1c0
# Parent  d4d643def2acff25c91d0b4da3609a35f24f8e56
implement cx_tree_add_child_node using cx_linked_list_add

diff -r d4d643def2ac -r dcf01bb852f4 src/tree.c
--- a/src/tree.c	Sun Sep 26 15:43:41 2021 +0200
+++ b/src/tree.c	Sun Sep 26 15:43:58 2021 +0200
@@ -27,6 +27,7 @@
  */
 
 #include "cx/tree.h"
+#include "cx/linked_list.h"
 
 #define CX_TR_PTR(cur, off) ((void**)(((char*)cur)+off))
 
@@ -66,5 +67,12 @@
         void **children_end,
         void *new_node)
 {
-    return 1;
+    if(cx_linked_list_add(children_begin, children_end, loc_prev, loc_next, new_node)) {
+        return 1;
+    }
+    // optional field
+    if(loc_parent >= 0) {
+        *CX_TR_PTR(new_node, loc_parent) = parent;
+    }
+    return 0;
 }