lua 中protobuf repeated 嵌套类 复合类型

PB基础知识科普

syntax = "proto2";
package PB;

message  Item
{
    required string name = ;
}
message  Role
{
    required string name = ;
    optional string email = ;
    repeated string t =;
    repeated Item item1 = ;
    optional  Item item2 =;
}

lua中解析 required  optional  repeated  类型

　　　require "proto.player_pb"

    local role = player_pb.Role()
    role.name=""   --require字段

    role.email ="eiail2222222" --optional
    role.t:append("") --repeated 基本类型

    local tt =role.item1:add() -- repeated 嵌套类 复合类型
    tt.name =""

    role.item2.name = "" -- optional 嵌套类 复合类型

    local pb_data1 = role:SerializeToString()

    local msg = player_pb.Role()
    msg:ParseFromString(pb_data1)

    print(msg.email.."   "..msg.item1[].name.."  "..msg.item2.name)