68 lines
1,009 B
Lua
68 lines
1,009 B
Lua
--
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-- classic
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--
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-- Copyright (c) 2014, rxi
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--
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-- This module is free software; you can redistribute it and/or modify it under
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-- the terms of the MIT license. See LICENSE for details.
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--
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local Object = {}
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Object.__index = Object
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function Object:new()
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end
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function Object:extend()
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local cls = {}
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for k, v in pairs(self) do
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if k:find("__") == 1 then
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cls[k] = v
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end
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end
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cls.__index = cls
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cls.super = self
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setmetatable(cls, self)
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return cls
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end
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function Object:implement(...)
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for _, cls in pairs({...}) do
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for k, v in pairs(cls) do
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if self[k] == nil and type(v) == "function" then
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self[k] = v
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end
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end
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end
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end
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function Object:is(T)
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local mt = getmetatable(self)
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while mt do
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if mt == T then
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return true
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end
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mt = getmetatable(mt)
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end
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return false
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end
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function Object:__tostring()
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return "Object"
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end
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function Object:__call(...)
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local obj = setmetatable({}, self)
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obj:new(...)
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return obj
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end
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return Object
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