Mô đun:Classic

---- classic---- Copyright (c) 2014, rxi---- This module is free software; you can redistribute it and/or modify it under-- the terms of the MIT license. See LICENSE for details.--local Object = {}Object.__index = Objectfunction Object:new() endfunction Object:extend()    local cls = {}    for k, v in pairs(self) do if k:find("__") == 1 then cls[k] = v end end    cls.__index = cls    cls.super = self    setmetatable(cls, self)    return clsendfunction Object:implement(...)    for _, cls in pairs({...}) do        for k, v in pairs(cls) do            if self[k] == nil and type(v) == "function" then                self[k] = v            end        end    endendfunction Object:is(T)    local mt = getmetatable(self)    while mt do        if mt == T then return true end        mt = getmetatable(mt)    end    return falseendfunction Object:__tostring() return "Object" endfunction Object:__call(...)    local obj = setmetatable({}, self)    obj:new(...)    return objendreturn Object