1 files changed, 30 insertions, 0 deletions
diff --git a/script/vm/list.lua b/script/vm/list.lua
new file mode 100644
index 00000000..234f241f
--- /dev/null
+++ b/script/vm/list.lua
@@ -0,0 +1,30 @@
+local Id = 0
+local Version = 0
+local List = {}
+
+local function get(id)
+    return List[id]
+end
+
+local function add(obj)
+    Id = Id + 1
+    List[Id] = obj
+    return Id
+end
+
+local function clear(id)
+    List[id] = nil
+    Version = Version + 1
+end
+
+local function getVersion()
+    return Version
+end
+
+return {
+    get = get,
+    add = add,
+    clear = clear,
+    list = List,
+    getVersion = getVersion,
+}