整理代码

2026-09-28 21:33:04 +08:00 · 2026-09-28 21:33:04 +08:00 · c7b4e178ec
commit c7b4e178ec
364 changed files with 59691 additions and 0 deletions
--- a/util/xpack/example/union1.cpp
+++ b/util/xpack/example/union1.cpp
@ -0,0 +1,118 @@
+/*
+* 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 <stdio.h>
+#include <iostream>
+#include "xpack/json.h"
+
+using namespace std;
+
+struct Base {
+    int a;
+    int b;
+    XPACK(O(a, b));
+};
+
+struct Data {
+    int type;
+    union {
+        Base  b;
+        int   i;
+        char  s[10];
+    };
+    string email;
+    string birthday;
+    // 'type' determines which member of the union to use, so we put type in 'C'
+    // union does not need to be put into XPACK, we will handled it in 'type'
+    XPACK(C(data_uinon, F(0), type), O(email, birthday)); 
+};
+
+struct User {
+    string name;
+    Data   data;
+    XPACK(O(name, data));
+};
+
+namespace xpack { // must define in namespace xpack
+
+template<class OBJ>
+bool data_uinon_decode(OBJ &obj, Data &d, const char*key, int &type, const Extend *ext) {
+    (void)ext;
+    obj.decode(key, type, ext);
+    switch (type) {
+        case 1:
+            obj.decode("b", d.b, NULL); // key("b") should same as encode
+            break;
+        case 2:
+            obj.decode("i", d.i, NULL);
+            break;
+        case 3:
+            obj.decode("s", d.s, NULL);
+            break;
+    }
+    return true;
+}
+
+template<class OBJ>
+bool data_uinon_encode(OBJ &obj, const Data &d, const char*key, const int &type, const Extend *ext) {
+    (void)ext;
+    obj.encode(key, type, NULL);
+    switch (type) {
+        case 1:
+            obj.encode("b", d.b, NULL);
+            break;
+        case 2:
+            obj.encode("i", d.i, NULL);
+            break;
+        case 3:
+            obj.encode("s", d.s, NULL);
+            break;
+    }
+    return true;
+}
+
+}
+
+int main(int argc, char *argv[]) {
+    (void)argc;
+    (void)argv;
+
+    User u;
+    u.name = "Pony";
+    u.data.type = 1;
+    u.data.b.a = 10;
+    u.data.b.b = 12;
+    u.data.email = "Pony@xpack.com";
+    u.data.birthday = "20200202";
+
+    string s = xpack::json::encode(u);
+    cout<<s<<endl;
+
+    u.data.type = 2;
+    u.data.i = 22;
+    s = xpack::json::encode(u);
+    cout<<s<<endl;
+
+    u.data.type = 3;
+    strcpy(u.data.s, "hello");
+    s = xpack::json::encode(u);
+    cout<<s<<endl;
+
+    User u1;
+    xpack::json::decode(s, u1);
+    cout<<u1.data.s<<endl;
+    return 0;
+}