Lua多重继承代码实例

local function search(k, plist)
    for i, v in pairs(plist) do
        local temp_v = v[k]
        if temp_v then
            return temp_v
        end
    end
end

function createClass(...)
    local c = {}
    local parents = {...}

    --父类列表中搜索方法
    setmetatable(c, { __index = function(t, k) return search(k, parents) end } )
    c.__index = c

    --定义一个新的构造函数
    function c:new(o)
        o = o or {}
        setmetatable(o, c)
        return o
    end
    return c
end

Named = {}

function Named:getname()
    return self.name
end

function Named:setname(n)
    self.name = n
end

local NamedAccount = createClass(Account, Named)
account = NamedAccount:new({name = "Paul"})
print(account:getname())