118 lines
2.8 KiB
C++
Executable file
118 lines
2.8 KiB
C++
Executable file
/*
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* Copyright (C) 2021 Duowan Inc. All rights reserved.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing,
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* software distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include <stdio.h>
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#include <iostream>
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#include "xpack/json.h"
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using namespace std;
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struct Base {
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int a;
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int b;
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XPACK(O(a, b));
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};
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struct Data {
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int type;
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union {
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Base b;
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int i;
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char s[10];
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};
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string email;
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string birthday;
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// 'type' determines which member of the union to use, so we put type in 'C'
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// union does not need to be put into XPACK, we will handled it in 'type'
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XPACK(C(data_uinon, F(0), type), O(email, birthday));
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};
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struct User {
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string name;
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Data data;
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XPACK(O(name, data));
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};
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namespace xpack { // must define in namespace xpack
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template<class OBJ>
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bool data_uinon_decode(OBJ &obj, Data &d, const char*key, int &type, const Extend *ext) {
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(void)ext;
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obj.decode(key, type, ext);
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switch (type) {
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case 1:
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obj.decode("b", d.b, NULL); // key("b") should same as encode
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break;
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case 2:
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obj.decode("i", d.i, NULL);
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break;
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case 3:
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obj.decode("s", d.s, NULL);
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break;
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}
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return true;
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}
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template<class OBJ>
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bool data_uinon_encode(OBJ &obj, const Data &d, const char*key, const int &type, const Extend *ext) {
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(void)ext;
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obj.encode(key, type, NULL);
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switch (type) {
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case 1:
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obj.encode("b", d.b, NULL);
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break;
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case 2:
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obj.encode("i", d.i, NULL);
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break;
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case 3:
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obj.encode("s", d.s, NULL);
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break;
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}
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return true;
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}
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}
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int main(int argc, char *argv[]) {
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(void)argc;
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(void)argv;
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User u;
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u.name = "Pony";
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u.data.type = 1;
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u.data.b.a = 10;
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u.data.b.b = 12;
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u.data.email = "Pony@xpack.com";
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u.data.birthday = "20200202";
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string s = xpack::json::encode(u);
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cout<<s<<endl;
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u.data.type = 2;
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u.data.i = 22;
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s = xpack::json::encode(u);
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cout<<s<<endl;
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u.data.type = 3;
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strcpy(u.data.s, "hello");
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s = xpack::json::encode(u);
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cout<<s<<endl;
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User u1;
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xpack::json::decode(s, u1);
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cout<<u1.data.s<<endl;
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return 0;
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}
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