webapi333/webapi/inc/json/xpack/example/json_decoder.cpp

/*
* Copyright (C) 2021 Duowan Inc. All rights reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
*    http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/

#include <iostream>
#include "xpack/json.h" // 包含这个头文件

using namespace std;

struct User {
    int64_t id;
    string  name;
    string  mail;
    User(int64_t i=0, const string& n="", const string& m=""):id(i),name(n),mail(m){}
    XPACK(O(id, name, mail)); // 添加宏定义XPACK在结构体定义结尾
};

struct Group {
    string  name;
    int64_t master;
    map<int, string> flags;
    vector<User> members;
    User         arrays[2];
    XPACK(O(name, master, flags, members, arrays)); // 添加宏定义XPACK在结构体定义结尾
};

int main(int argc, char *argv[]) {
    (void)argc;
    (void)argv;

    Group g;
    g.name = "C++";
    g.master = 2019;
    g.members.resize(2);
    g.members[0] = User(1, "Jack", "jack@xpack.com");
    g.members[1] = User(2, "Pony", "pony@xpack.com");
    g.arrays[0] = g.members[0];
    g.arrays[1] = g.members[1];
    g.flags[1] = "a";
    g.flags[2] = "b";

    string json = xpack::json::encode(g);      // 结构体转json
    cout<<json<<endl;

    Group n;
    xpack::JsonDecoder jd(json, false);
    
    jd["name"].decode(NULL, n.name, NULL);
    cout<<"name is:"<<n.name<<endl;

    xpack::JsonDecoder&flags = jd["flags"];
    for (xpack::JsonDecoder::Iterator it=flags.Begin(); it!=flags.End(); ++it) {
        string f;
        it.Val().decode(NULL, f, NULL);
        cout<<"    "<<it.Key()<<':'<<f<<endl;
    }

    return 0;
}