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fastJSON - Smallest, Fastest Polymorphic JSON Serializer

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23 Jan 2021CPOL37 min read 5.6M   63.7K   984  
In this article I demonstrate why fastJSON is the smallest, fastest polymorphic JSON serializer (with Silverlight4, MonoDroid and .NET core support)
Here we look at: the what and why of JSON, features of this implementation, some of the JSON alternatives that I have personally used, using the code, and performance tests.
#if net4
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Dynamic;

namespace fastJSON
{
    internal class DynamicJson : DynamicObject
    {
        private IDictionary<string, object> _dictionary { get; set; }
        private List<object> _list { get; set; }

        public DynamicJson(string json)
        {
            var parse = fastJSON.JSON.Instance.Parse(json);

            if (parse is IDictionary<string, object>)
                _dictionary = (IDictionary<string, object>)parse;
            else
                _list = (List<object>)parse;
        }

        private DynamicJson(object dictionary)
        {
            if (dictionary is IDictionary<string, object>)
                _dictionary = (IDictionary<string, object>)dictionary;
        }

        public override bool TryGetIndex(GetIndexBinder binder, Object[] indexes, out Object result)
        {
            int index = (int)indexes[0];
            result = _list[index];
            if (result is IDictionary<string, object>)
                result = new DynamicJson(result as IDictionary<string, object>);
            return true;
        }

        public override bool TryGetMember(GetMemberBinder binder, out object result)
        {
            if (_dictionary.TryGetValue(binder.Name, out result) == false)
                if (_dictionary.TryGetValue(binder.Name.ToLower(), out result) == false)
                    return false;// throw new Exception("property not found " + binder.Name);

            if (result is IDictionary<string, object>)
            {
                result = new DynamicJson(result as IDictionary<string, object>);
            }
            else if (result is List<object>)
            {
                List<object> list = new List<object>();
                foreach (object item in (List<object>)result)
                {
                    if (item is IDictionary<string, object>)
                        list.Add(new DynamicJson(item as IDictionary<string, object>));
                    else
                        list.Add(item);
                }
                result = list;
            }

            return _dictionary.ContainsKey(binder.Name);
        }
    }
}
#endif

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License

This article, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)


Written By
Architect -
United Kingdom United Kingdom
Mehdi first started programming when he was 8 on BBC+128k machine in 6512 processor language, after various hardware and software changes he eventually came across .net and c# which he has been using since v1.0.
He is formally educated as a system analyst Industrial engineer, but his programming passion continues.

* Mehdi is the 5th person to get 6 out of 7 Platinum's on Code-Project (13th Jan'12)
* Mehdi is the 3rd person to get 7 out of 7 Platinum's on Code-Project (26th Aug'16)

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