基于WinCE的JSON 类库源码

基于WinCE的JSON 类库，可以将对象序列化成字符串和文件。

提示，其在反序列化时有一个BUG：

如果对象的某个字段值为 null，将其序列化成字符串，然后将该字符串反序列化成对象时会报异常。

这个通常影响不大，在序列化时为对象的字段都提供一个非 null 的默认值即可。

测试代码：

  internal class Program
    {
        private static void Main(string[] args)
        {            
            string json = Converter.Serialize(new User("name", "password", AccountStatus.Enabled));
            Converter.Serialize("out.txt", new int[] { 1, 2, 3, -4 }, "_");
            Console.WriteLine(json);


            User user = Converter.Deserialize<User>(json, "_");
            int[] values = Converter.DeserializeFromFile<int[]>("out.txt", "_");
            Console.WriteLine(user.UserName);
            
            Console.WriteLine("Done. Press enter to exit");
            Console.ReadLine();
        }
    }

    public class BaseUser
    {
        private int _id = 1;
    }

    [SerializeIncludingBase]
    public class User : BaseUser
    {
        private string _userName;
        private string _password;
        [NonSerialized]
        private readonly Role _role;
        private AccountStatus _status;    
        private Thing _think = new Thing();

        public string UserName
        {
            get { return _userName; }
            set { _userName = value; }
        }
        public string Password
        {
            get { return _password; }
            set { _password = value; }
        }
        public AccountStatus Status
        {
            get { return _status; }
            set { _status = value; }
        }
        public Role Role
        {
            get { return _role; }
        }
        public Thing Thing
        {
            get { return new Thing(); }
        }

        public User(string userName, string password, AccountStatus status)
        {
            UserName = userName;
            Password = password;
            Status = status;
            _role = new Role(DateTime.Now, "Admin", this);
        }

        private User()
        {
        }
    }

    public class Role
    {
        public Role(DateTime expires, string name, User user)
        {
            Expires = expires;
            Name = name;
            User = user;
        }

        public DateTime Expires { get; set; }

        public string Name { get; set; }

        public User User { get; set; }

        public Thing Thing
        {
            get { return new Thing(); }
        }
    }

    public class Thing
    {
        private string _name = "ABC";

        public string Name
        {
            get { return _name; }
            set { _name = value; }
        }
    }

    public enum AccountStatus
    {
        Enabled = 1,
        Disabled = 2,
    }