What the heck is los? Los is a object system writed in pure Lua. What are the advantages of los?
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| LOS - Lua Object System
What the heck is LOS? LOS is a object system writed in pure Lua. What are the advantages of LOS? => Mixins (Virtual Multiple Inheritance) LOS implements suport to virtual multiple inheritance using mixins like Ruby. => Classes LOS implements support to classes with a embedded typing system. => Method Overloading LOS implents a simple method overload. => Inheritance (single) LOS support single inheritance like Java. => Multiple Class Importation (In Development) LOS support multiple class loading of a same class path like Python. Documentation: class Create a class and register the created class into _G[ mixin Add all methods of a module or class in your class where: extends Make inheritance of a class in your class where: overload Overload a method of a LOS where: Examples: -- point.lua require 'LOS' -- Calling the "class" function and passing a class name as -- string the class function create a class for you. class 'Point' -- This method is used in inheritance of variables of a class -- then use this method to declare variables and set your -- default values. function initialize() self.x = 0 self.y = 0 end -- This is the constructor of class used to instantiate the class -- is permited only one constructor by class. function Point(x, y) self.x = x self.y = y end -- The variable "this" and the variable "my" are references -- to your class. function this:add(point) if point:instanceof 'Point' then self.x = self.x + point.x self.y = self.y + point.y end return self end function my:draw() print("X = ", self.x, " Y = ", self.y) end -- point3d.lua require "point" -- Using the function "extends" to makes inheritance in a class. class 'Point3D' extends 'Point' function initialize() self.z = 0 end function Point3D(x, y, z) this.Point(x, y) self.z = z or 0 end function my:draw() print("X = ", self.x, " Y = ", self.y, " Z = ", self.z) end -- point4d.lua require "point3d" require "axis" -- The "mixin" function add to your class ALL methods in the -- class or module passed to function. class 'Point4D' extends 'Point3D' mixin 'Axis' function initialize() self.a = 0 end -- Calling the super class constructor you can -- set variables in your instance function Point4D(x, y, z, a) super.Point3D(x, y, z) self.a = a end function my:draw() print("X = ", self.x, " Y = ", self.y, " Z = ", self.z, " A = ", self.a) end -- axis.lua module('Axis', package.seeall) function axis() print(self.a, "Hi! I'm a mixin!") end -- main.lua require 'axis' require 'point' require 'point3d' require 'point4d' local point = Point:new(3,5) local point3d = Point3D:new(3, 4, 9) local point4d = Point4D:new(3, 4, 9, 8) point:draw() point3d:draw() point:add(point4d1):draw() point4d:draw() point4d:axis() |