打印表数据改进版

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-------------------------------------------------------------------
-- This library defines table_print(tb),table_toString(tb) for 
-- prinTing table data
-------------------------------------------------------------------

local function _list_table(tb,table_list,level)
    local ret = ""
    local indent = String.rep(" ",level*4)

    for k,v in pairs(tb) do
        local quo = type(k) == "String" and "\"" or ""
        ret = ret .. indent .. "[" .. quo .. toString(k) .. quo .. "] = "

        if type(v) == "table" then
            local t_name = table_list[v]
            if t_name then
                ret = ret .. toString(v) .. " -- > [\"" .. t_name .. "\"]\n"
            else
                table_list[v] = toString(k)
                ret = ret .. "{\n"
                ret = ret .. _list_table(v,level+1)
                ret = ret .. indent .. "}\n"
            end
        elseif type(v) == "String" then
            ret = ret .. "\"" .. toString(v) .. "\"\n"
        else
            ret = ret .. toString(v) .. "\n"
        end
    end

    local mt = getmetatable(tb)
    if mt then 
        ret = ret .. "\n"
        local t_name = table_list[mt]
        if t_name then
            ret = ret .. toString(mt) .. " -- > [\"" .. t_name .. "\"]\n"
        else
            ret = ret .. indent .. "<metatable> = {\n"
            ret = ret .. _list_table(mt,level+1)
            ret = ret .. indent .. "}\n"
        end
        
    end

   return ret
end

-------------------------------------------------------------------
-- Public functions
-------------------------------------------------------------------

function table_toString(tb)
    local ret = " = {\n"
    local table_list = {}
    table_list[tb] = "Root Table"
    ret = ret .. _list_table(tb,1)
    ret = ret .. "}"
    return ret
end

function table_print(tb)
    if type(tb) ~= "table" then
        error("Sorry,it's not table,it is " .. type(tb) .. ".")
    end
    print(toString(tb) .. table_toString(tb))
end

-------------------------------------------------------------------
-- For test
-------------------------------------------------------------------

local test_table_2 = {
    print,}

local test_table_1 = {
    12,22.5,true,infor = {
        name = "Jack",age = 26,lifeexp = {
            ["1986"] = "Both",["2013"] = "Work in TenCET",["2015"] = "Get married"
        },wife = "Lucy"
    },"Hello test",recu_table = test_table_2,["2"] = 13
}

test_table_2.recu_table = test_table_1

local metatable = {
    __index = test_table_2,__add = function(a,b) return 0 end
}

setmetatable(test_table_1,metatablE)

function table_test_lib()
    table_print(test_table_1)
end

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