1 files changed, 61 insertions, 0 deletions
diff --git a/src/utils/list.h b/src/utils/list.h
new file mode 100644
index 0000000..6e3ba20
--- /dev/null
+++ b/src/utils/list.h
@@ -0,0 +1,61 @@
+/*
+ * This file is part of libdom.
+ * Licensed under the MIT License,
+ *                http://www.opensource.org/licenses/mit-license.php
+ * Copyright 2009 Bo Yang <struggleyb.nku@gmail.com>
+ *
+ * This file contains the list structure used to compose lists. 
+ * 
+ * Note: This is a implementation of a doubld-linked cyclar list.
+ */
+
+#ifndef dom_utils_list_h_
+#define dom_utils_list_h_
+
+#include <stddef.h>
+
+struct list_entry {
+	struct list_entry *prev;
+	struct list_entry *next;
+};
+
+/**
+ * Initialise a list_entry structure
+ *
+ * \param ent  The entry to initialise
+ */
+static inline void list_init(struct list_entry *ent)
+{
+	ent->prev = ent;
+	ent->next = ent;
+}
+
+/**
+ * Append a new list_entry after the list
+ *
+ * \param head  The list header
+ * \param new   The new entry
+ */
+static inline void list_append(struct list_entry *head, struct list_entry *new)
+{
+	new->next = head;
+	new->prev = head->prev;
+	head->prev->next = new;
+	head->prev = new;
+}
+
+/**
+ * Delete a list_entry from the list
+ *
+ * \param entry  The entry need to be deleted from the list
+ */
+static inline void list_del(struct list_entry *ent)
+{
+	ent->prev->next = ent->next;
+	ent->next->prev = ent->prev;
+
+	ent->prev = ent;
+	ent->next = ent;
+}
+
+#endif