Optimized luci.util.class

diff --git a/libs/core/luasrc/util.lua b/libs/core/luasrc/util.lua
index 5f9c609..c84df1a 100644 (file)
--- a/libs/core/luasrc/util.lua
+++ b/libs/core/luasrc/util.lua
@@ -59,6 +59,17 @@ end
 -- Class helper routines
 --
 
+-- Instantiates a class
+local function _instantiate(class, ...)
+       local inst = setmetatable({}, {__index = class})
+
+       if inst.__init__ then
+               inst:__init__(...)
+       end
+
+       return inst
+end
+
 --- Create a Class object (Python-style object model).
 -- The class object can be instantiated by calling itself.
 -- Any class functions or shared parameters can be attached to this object.
@@ -74,26 +85,10 @@ end
 -- @see                        instanceof
 -- @see                        clone
 function class(base)
-       local class = {}
-
-       local create = function(class, ...)
-               local inst = setmetatable({}, {__index = class})
-
-               if inst.__init__ then
-                       inst:__init__(...)
-               end
-
-               return inst
-       end
-
-       local classmeta = {__call = create}
-
-       if base then
-               classmeta.__index = base
-       end
-
-       setmetatable(class, classmeta)
-       return class
+       return setmetatable({}, {
+               __call  = _instantiate,
+               __index = base
+       })
 end
 
 --- Test whether the given object is an instance of the given class.