【高级技巧】适配器模式：异构数据的接口转换封装

local function adaptOld(blob)
    local name, lv, job = string.match(blob or "",
        "^(.-)|(%d+)|(.+)$")
    return { name = name, level = tonumber(lv) or 0, job = job }
end
local function adaptNew(tbl)
    return { name = tbl.name or "", level = tbl.level or 0,
        job = tbl.job or "" }
end

local function getPlayerInfo(source)
    if type(source) == "string" then
        return adaptOld(source)
    end
    return adaptNew(source)
end
print(getPlayerInfo("玛法老玩家|60|战士").level)
print(getPlayerInfo({ name = "新客", level = 12 }).level)