Created
February 5, 2014 02:43
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function clone(object) | |
local lookup_table = {} | |
local function _copy(object) | |
if type(object) ~= "table" then | |
return object | |
elseif lookup_table[object] then | |
return lookup_table[object] | |
end | |
local new_table = {} | |
lookup_table[object] = new_table | |
for key, value in pairs(object) do | |
new_table[_copy(key)] = _copy(value) | |
end | |
return setmetatable(new_table, getmetatable(object)) | |
end | |
return _copy(object) | |
end | |
--Create an class. | |
function class(classname, super) | |
local superType = type(super) | |
local cls | |
if superType ~= "function" and superType ~= "table" then | |
superType = nil | |
super = nil | |
end | |
if superType == "function" or (super and super.__ctype == 1) then | |
-- inherited from native C++ Object | |
cls = {} | |
if superType == "table" then | |
-- copy fields from super | |
for k,v in pairs(super) do cls[k] = v end | |
cls.__create = super.__create | |
cls.super = super | |
else | |
cls.__create = super | |
end | |
cls.ctor = function() end | |
cls.__cname = classname | |
cls.__ctype = 1 | |
function cls.new(...) | |
local instance = cls.__create(...) | |
-- copy fields from class to native object | |
for k,v in pairs(cls) do instance[k] = v end | |
instance.class = cls | |
instance:ctor(...) | |
return instance | |
end | |
else | |
-- inherited from Lua Object | |
if super then | |
cls = clone(super) | |
cls.super = super | |
else | |
cls = {ctor = function() end} | |
end | |
cls.__cname = classname | |
cls.__ctype = 2 -- lua | |
cls.__index = cls | |
function cls.new(...) | |
local instance = setmetatable({}, cls) | |
instance.class = cls | |
instance:ctor(...) | |
return instance | |
end | |
end | |
return cls | |
end |
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