//#define USE_SharpZipLib
#if !UNITY_WEBPLAYER
#define USE_FileIO
#endif
/* * * * *
 * A simple JSON Parser / builder
 * ------------------------------
 * 
 * It mainly has been written as a simple JSON parser. It can build a JSON string
 * from the node-tree, or generate a node tree from any valid JSON string.
 * 
 * If you want to use compression when saving to file / stream / B64 you have to include
 * SharpZipLib ( http://www.icsharpcode.net/opensource/sharpziplib/ ) in your project and
 * define "USE_SharpZipLib" at the top of the file
 * 
 * Written by Bunny83 
 * 2012-06-09
 * 
 *
 * Features / attributes:
 * - provides strongly typed node classes and lists / dictionaries
 * - provides easy access to class members / array items / data values
 * - the parser now properly identifies types. So generating JSON with this framework should work.
 * - only double quotes (") are used for quoting strings.
 * - provides "casting" properties to easily convert to / from those types:
 *   int / float / double / bool
 * - provides a common interface for each node so no explicit casting is required.
 * - the parser tries to avoid errors, but if malformed JSON is parsed the result is more or less undefined
 * - It can serialize/deserialize a node tree into/from an experimental compact binary format. It might
 *   be handy if you want to store things in a file and don't want it to be easily modifiable
 * 
 * 
 * 2012-12-17 Update:
 * - Added internal JSONLazyCreator class which simplifies the construction of a JSON tree
 *   Now you can simple reference any item that doesn't exist yet and it will return a JSONLazyCreator
 *   The class determines the required type by it's further use, creates the type and removes itself.
 * - Added binary serialization / deserialization.
 * - Added support for BZip2 zipped binary format. Requires the SharpZipLib ( http://www.icsharpcode.net/opensource/sharpziplib/ )
 *   The usage of the SharpZipLib library can be disabled by removing or commenting out the USE_SharpZipLib define at the top
 * - The serializer uses different types when it comes to store the values. Since my data values
 *   are all of type string, the serializer will "try" which format fits best. The order is: int, float, double, bool, string.
 *   It's not the most efficient way but for a moderate amount of data it should work on all platforms.
 * 
 * 2017-03-08 Update:
 * - Optimised parsing by using a StringBuilder for token. This prevents performance issues when large
 *   string data fields are contained in the json data.
 * - Finally refactored the badly named JSONClass into JSONObject.
 * - Replaced the old JSONData class by distict typed classes ( JSONString, JSONNumber, JSONBool, JSONNull ) this
 *   allows to propertly convert the node tree back to json without type information loss. The actual value
 *   parsing now happens at parsing time and not when you actually access one of the casting properties.
 * 
 * The MIT License (MIT)
 * 
 * Copyright (c) 2012-2017 Markus Göbel
 * 
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 * 
 * The above copyright notice and this permission notice shall be included in all
 * copies or substantial portions of the Software.
 * 
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 * 
 * * * * */
using System;
using System.Collections;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace Umeng
{
	public enum JSONNodeType
	{
		Array = 1,
		Object = 2,
		String = 3,
		Number = 4,
		NullValue = 5,
		Boolean = 6,
		None = 7,
	}

	public abstract partial class JSONNode
	{
		#region common interface

		public virtual JSONNode this[int aIndex] { get { return null; } set { } }

		public virtual JSONNode this[string aKey] { get { return null; } set { } }

		public virtual string Value { get { return ""; } set { } }

		public virtual int Count { get { return 0; } }

		public virtual bool IsNumber { get { return false; } }
		public virtual bool IsString { get { return false; } }
		public virtual bool IsBoolean { get { return false; } }
		public virtual bool IsNull { get { return false; } }
		public virtual bool IsArray { get { return false; } }
		public virtual bool IsObject { get { return false; } }

		public virtual void Add(string aKey, JSONNode aItem)
		{
		}
		public virtual void Add(JSONNode aItem)
		{
			Add("", aItem);
		}

		public virtual JSONNode Remove(string aKey)
		{
			return null;
		}

		public virtual JSONNode Remove(int aIndex)
		{
			return null;
		}

		public virtual JSONNode Remove(JSONNode aNode)
		{
			return aNode;
		}

		public virtual IEnumerable<JSONNode> Children
		{
			get
			{
				yield break;
			}
		}

		public IEnumerable<JSONNode> DeepChildren
		{
			get
			{
				foreach (var C in Children)
					foreach (var D in C.DeepChildren)
						yield return D;
			}
		}

		public override string ToString()
		{
			return "JSONNode";
		}

		public virtual string ToString(string aIndent)
		{
			return ToString(aIndent, "");
		}

		internal abstract string ToString(string aIndent, string aPrefix);

		#endregion common interface

		#region typecasting properties

		public abstract JSONNodeType Tag { get; }

		public virtual double AsDouble
		{
			get
			{
				double v = 0.0;
				if (double.TryParse(Value, out v))
					return v;
				return 0.0;
			}
			set
			{
				Value = value.ToString();
			}
		}

		public virtual int AsInt
		{
			get { return (int)AsDouble; }
			set { AsDouble = value; }
		}

		public virtual float AsFloat
		{
			get { return (float)AsDouble; }
			set { AsDouble = value; }
		}

		public virtual bool AsBool
		{
			get
			{
				bool v = false;
				if (bool.TryParse(Value, out v))
					return v;
				return !string.IsNullOrEmpty(Value);
			}
			set
			{
				Value = (value) ? "true" : "false";
			}
		}

		public virtual JSONArray AsArray
		{
			get
			{
				return this as JSONArray;
			}
		}

		public virtual JSONObject AsObject
		{
			get
			{
				return this as JSONObject;
			}
		}


		#endregion typecasting properties

		#region operators

		public static implicit operator JSONNode(string s)
		{
			return new JSONString(s);
		}
		public static implicit operator string(JSONNode d)
		{
			return (d == null) ? null : d.Value;
		}

		public static implicit operator JSONNode(double n)
		{
			return new JSONNumber(n);
		}
		public static implicit operator double(JSONNode d)
		{
			return (d == null) ? 0 : d.AsDouble;
		}

		public static implicit operator JSONNode(float n)
		{
			return new JSONNumber(n);
		}
		public static implicit operator float(JSONNode d)
		{
			return (d == null) ? 0 : d.AsFloat;
		}

		public static implicit operator JSONNode(int n)
		{
			return new JSONNumber(n);
		}
		public static implicit operator int(JSONNode d)
		{
			return (d == null) ? 0 : d.AsInt;
		}

		public static implicit operator JSONNode(bool b)
		{
			return new JSONBool(b);
		}
		public static implicit operator bool(JSONNode d)
		{
			return (d == null) ? false : d.AsBool;
		}

		public static bool operator ==(JSONNode a, object b)
		{
			if (ReferenceEquals(a, b))
				return true;
			bool aIsNull = a is JSONNull || ReferenceEquals(a, null) || a is JSONLazyCreator;
			bool bIsNull = b is JSONNull || ReferenceEquals(b, null) || b is JSONLazyCreator;
			return (aIsNull && bIsNull);
		}

		public static bool operator !=(JSONNode a, object b)
		{
			return !(a == b);
		}

		public override bool Equals(object obj)
		{
			return System.Object.ReferenceEquals(this, obj);
		}

		public override int GetHashCode()
		{
			return base.GetHashCode();
		}

		#endregion operators
		internal static StringBuilder m_EscapeBuilder = new StringBuilder();
		internal static string Escape(string aText)
		{
			m_EscapeBuilder.Length = 0;
			if (m_EscapeBuilder.Capacity < aText.Length + aText.Length / 10)
				m_EscapeBuilder.Capacity = aText.Length + aText.Length / 10;
			foreach (char c in aText)
			{
				switch (c)
				{
				case '\\':
					m_EscapeBuilder.Append("\\\\");
					break;
				case '\"':
					m_EscapeBuilder.Append("\"");
					break;
				case '\n':
					m_EscapeBuilder.Append("\\n");
					break;
				case '\r':
					m_EscapeBuilder.Append("\\r");
					break;
				case '\t':
					m_EscapeBuilder.Append("\\t");
					break;
				case '\b':
					m_EscapeBuilder.Append("\\b");
					break;
				case '\f':
					m_EscapeBuilder.Append("\\f");
					break;
				default:
					m_EscapeBuilder.Append(c);
					break;
				}
			}
			string result = m_EscapeBuilder.ToString();
			m_EscapeBuilder.Length = 0;
			return result;
		}

		static void ParseElement(JSONNode ctx, string token, string tokenName, bool quoted)
		{
			if (quoted)
			{
				ctx.Add(tokenName, token);
				return;
			}
			string tmp = token.ToLower();
			if (tmp == "false" || tmp == "true")
				ctx.Add(tokenName, tmp == "true");
			else if (tmp == "null")
				ctx.Add(tokenName, null);
			else
			{
				double val;
				if (double.TryParse(token, out val))
					ctx.Add(tokenName, val);
				else
					ctx.Add(tokenName, token);
			}
		}

		public static JSONNode Parse(string aJSON)
		{
			Stack<JSONNode> stack = new Stack<JSONNode>();
			JSONNode ctx = null;
			int i = 0;
			StringBuilder Token = new StringBuilder();
			string TokenName = "";
			bool QuoteMode = false;
			bool TokenIsQuoted = false;
			while (i < aJSON.Length)
			{
				switch (aJSON[i])
				{
				case '{':
					if (QuoteMode)
					{
						Token.Append(aJSON[i]);
						break;
					}
					stack.Push(new JSONObject());
					if (ctx != null)
					{
						ctx.Add(TokenName, stack.Peek());
					}
					TokenName = "";
					Token.Length = 0;
					ctx = stack.Peek();
					break;

				case '[':
					if (QuoteMode)
					{
						Token.Append(aJSON[i]);
						break;
					}

					stack.Push(new JSONArray());
					if (ctx != null)
					{
						ctx.Add(TokenName, stack.Peek());
					}
					TokenName = "";
					Token.Length = 0;
					ctx = stack.Peek();
					break;

				case '}':
				case ']':
					if (QuoteMode)
					{

						Token.Append(aJSON[i]);
						break;
					}
					if (stack.Count == 0)
						throw new Exception("JSON Parse: Too many closing brackets");

					stack.Pop();
					if (Token.Length > 0)
					{
						ParseElement(ctx, Token.ToString(), TokenName, TokenIsQuoted);
						TokenIsQuoted = false;
					}
					TokenName = "";
					Token.Length = 0;
					if (stack.Count > 0)
						ctx = stack.Peek();
					break;

				case ':':
					if (QuoteMode)
					{
						Token.Append(aJSON[i]);
						break;
					}
					TokenName = Token.ToString().Trim();
					Token.Length = 0;
					TokenIsQuoted = false;
					break;

				case '"':
					QuoteMode ^= true;
					TokenIsQuoted |= QuoteMode;
					break;

				case ',':
					if (QuoteMode)
					{
						Token.Append(aJSON[i]);
						break;
					}
					if (Token.Length > 0)
					{
						ParseElement(ctx, Token.ToString(), TokenName, TokenIsQuoted);
						TokenIsQuoted = false;
					}
					TokenName = "";
					Token.Length = 0;
					TokenIsQuoted = false;
					break;

				case '\r':
				case '\n':
					break;

				case ' ':
				case '\t':
					if (QuoteMode)
						Token.Append(aJSON[i]);
					break;

				case '\\':
					++i;
					if (QuoteMode)
					{
						char C = aJSON[i];
						switch (C)
						{
						case 't':
							Token.Append('\t');
							break;
						case 'r':
							Token.Append('\r');
							break;
						case 'n':
							Token.Append('\n');
							break;
						case 'b':
							Token.Append('\b');
							break;
						case 'f':
							Token.Append('\f');
							break;
						case 'u':
							{
								string s = aJSON.Substring(i + 1, 4);
								Token.Append((char)int.Parse(
									s,
									System.Globalization.NumberStyles.AllowHexSpecifier));
								i += 4;
								break;
							}
						default:
							Token.Append(C);
							break;
						}
					}
					break;

				default:
					Token.Append(aJSON[i]);
					break;
				}
				++i;
			}
			if (QuoteMode)
			{
				throw new Exception("JSON Parse: Quotation marks seems to be messed up.");
			}
			return ctx;
		}

		public virtual void Serialize(System.IO.BinaryWriter aWriter)
		{
		}

		public void SaveToStream(System.IO.Stream aData)
		{
			var W = new System.IO.BinaryWriter(aData);
			Serialize(W);
		}

		#if USE_SharpZipLib
		public void SaveToCompressedStream(System.IO.Stream aData)
		{
		using (var gzipOut = new ICSharpCode.SharpZipLib.BZip2.BZip2OutputStream(aData))
		{
		gzipOut.IsStreamOwner = false;
		SaveToStream(gzipOut);
		gzipOut.Close();
		}
		}

		public void SaveToCompressedFile(string aFileName)
		{

		#if USE_FileIO
		System.IO.Directory.CreateDirectory((new System.IO.FileInfo(aFileName)).Directory.FullName);
		using(var F = System.IO.File.OpenWrite(aFileName))
		{
		SaveToCompressedStream(F);
		}

		#else
		throw new Exception("Can't use File IO stuff in the webplayer");
		#endif
		}
		public string SaveToCompressedBase64()
		{
		using (var stream = new System.IO.MemoryStream())
		{
		SaveToCompressedStream(stream);
		stream.Position = 0;
		return System.Convert.ToBase64String(stream.ToArray());
		}
		}

		#else
		public void SaveToCompressedStream(System.IO.Stream aData)
		{
			throw new Exception("Can't use compressed functions. You need include the SharpZipLib and uncomment the define at the top of SimpleJSON");
		}

		public void SaveToCompressedFile(string aFileName)
		{
			throw new Exception("Can't use compressed functions. You need include the SharpZipLib and uncomment the define at the top of SimpleJSON");
		}

		public string SaveToCompressedBase64()
		{
			throw new Exception("Can't use compressed functions. You need include the SharpZipLib and uncomment the define at the top of SimpleJSON");
		}
		#endif

		public void SaveToFile(string aFileName)
		{
			#if USE_FileIO
			System.IO.Directory.CreateDirectory((new System.IO.FileInfo(aFileName)).Directory.FullName);
			using (var F = System.IO.File.OpenWrite(aFileName))
			{
				SaveToStream(F);
			}
			#else
			throw new Exception ("Can't use File IO stuff in the webplayer");
			#endif
		}

		public string SaveToBase64()
		{
			using (var stream = new System.IO.MemoryStream())
			{
				SaveToStream(stream);
				stream.Position = 0;
				return System.Convert.ToBase64String(stream.ToArray());
			}
		}

		public static JSONNode Deserialize(System.IO.BinaryReader aReader)
		{
			JSONNodeType type = (JSONNodeType)aReader.ReadByte();
			switch (type)
			{
			case JSONNodeType.Array:
				{
					int count = aReader.ReadInt32();
					JSONArray tmp = new JSONArray();
					for (int i = 0; i < count; i++)
						tmp.Add(Deserialize(aReader));
					return tmp;
				}
			case JSONNodeType.Object:
				{
					int count = aReader.ReadInt32();
					JSONObject tmp = new JSONObject();
					for (int i = 0; i < count; i++)
					{
						string key = aReader.ReadString();
						var val = Deserialize(aReader);
						tmp.Add(key, val);
					}
					return tmp;
				}
			case JSONNodeType.String:
				{
					return new JSONString(aReader.ReadString());
				}
			case JSONNodeType.Number:
				{
					return new JSONNumber(aReader.ReadDouble());
				}
			case JSONNodeType.Boolean:
				{
					return new JSONBool(aReader.ReadBoolean());
				}
			case JSONNodeType.NullValue:
				{
					return new JSONNull();
				}
			default:
				{
					throw new Exception("Error deserializing JSON. Unknown tag: " + type);
				}
			}
		}

		#if USE_SharpZipLib
		public static JSONNode LoadFromCompressedStream(System.IO.Stream aData)
		{
		var zin = new ICSharpCode.SharpZipLib.BZip2.BZip2InputStream(aData);
		return LoadFromStream(zin);
		}
		public static JSONNode LoadFromCompressedFile(string aFileName)
		{
		#if USE_FileIO
		using(var F = System.IO.File.OpenRead(aFileName))
		{
		return LoadFromCompressedStream(F);
		}
		#else
		throw new Exception("Can't use File IO stuff in the webplayer");
		#endif
		}
		public static JSONNode LoadFromCompressedBase64(string aBase64)
		{
		var tmp = System.Convert.FromBase64String(aBase64);
		var stream = new System.IO.MemoryStream(tmp);
		stream.Position = 0;
		return LoadFromCompressedStream(stream);
		}
		#else
		public static JSONNode LoadFromCompressedFile(string aFileName)
		{
			throw new Exception("Can't use compressed functions. You need include the SharpZipLib and uncomment the define at the top of SimpleJSON");
		}

		public static JSONNode LoadFromCompressedStream(System.IO.Stream aData)
		{
			throw new Exception("Can't use compressed functions. You need include the SharpZipLib and uncomment the define at the top of SimpleJSON");
		}

		public static JSONNode LoadFromCompressedBase64(string aBase64)
		{
			throw new Exception("Can't use compressed functions. You need include the SharpZipLib and uncomment the define at the top of SimpleJSON");
		}
		#endif

		public static JSONNode LoadFromStream(System.IO.Stream aData)
		{
			using (var R = new System.IO.BinaryReader(aData))
			{
				return Deserialize(R);
			}
		}

		public static JSONNode LoadFromFile(string aFileName)
		{
			#if USE_FileIO
			using (var F = System.IO.File.OpenRead(aFileName))
			{
				return LoadFromStream(F);
			}
			#else
			throw new Exception ("Can't use File IO stuff in the webplayer");
			#endif
		}

		public static JSONNode LoadFromBase64(string aBase64)
		{
			var tmp = System.Convert.FromBase64String(aBase64);
			var stream = new System.IO.MemoryStream(tmp);
			stream.Position = 0;
			return LoadFromStream(stream);
		}
	}
	// End of JSONNode

	public class JSONArray : JSONNode, IEnumerable
	{
		private List<JSONNode> m_List = new List<JSONNode>();

		public override JSONNodeType Tag { get { return JSONNodeType.Array; } }
		public override bool IsArray { get { return true; } }



		public override JSONNode this[int aIndex]
		{
			get
			{
				if (aIndex < 0 || aIndex >= m_List.Count)
					return new JSONLazyCreator(this);
				return m_List[aIndex];
			}
			set
			{
				if (value == null)
					value = new JSONNull();
				if (aIndex < 0 || aIndex >= m_List.Count)
					m_List.Add(value);
				else
					m_List[aIndex] = value;
			}
		}

		public override JSONNode this[string aKey]
		{
			get { return new JSONLazyCreator(this); }
			set
			{
				if (value == null)
					value = new JSONNull();
				m_List.Add(value);
			}
		}

		public override int Count
		{
			get { return m_List.Count; }
		}

		public override void Add(string aKey, JSONNode aItem)
		{
			if (aItem == null)
				aItem = new JSONNull();
			m_List.Add(aItem);
		}

		public override JSONNode Remove(int aIndex)
		{
			if (aIndex < 0 || aIndex >= m_List.Count)
				return null;
			JSONNode tmp = m_List[aIndex];
			m_List.RemoveAt(aIndex);
			return tmp;
		}

		public override JSONNode Remove(JSONNode aNode)
		{
			m_List.Remove(aNode);
			return aNode;
		}

		public override IEnumerable<JSONNode> Children
		{
			get
			{
				foreach (JSONNode N in m_List)
					yield return N;
			}
		}

		public IEnumerator GetEnumerator()
		{
			foreach (JSONNode N in m_List)
				yield return N;
		}

		public override string ToString()
		{
			string result = "[ ";
			foreach (JSONNode N in m_List)
			{
				if (result.Length > 2)
					result += ", ";
				result += N.ToString();
			}
			result += " ]";
			return result;
		}

		internal override string ToString(string aIndent, string aPrefix)
		{
			string result = "[ ";
			foreach (JSONNode N in m_List)
			{
				if (result.Length > 3)
					result += ", ";
				result += "\n"+aPrefix + aIndent + N.ToString(aIndent, aPrefix + aIndent);
			}
			result += "\n" + aPrefix + "]";
			return result;
		}

		public override void Serialize(System.IO.BinaryWriter aWriter)
		{
			aWriter.Write((byte)JSONNodeType.Array);
			aWriter.Write(m_List.Count);
			for (int i = 0; i < m_List.Count; i++)
			{
				m_List[i].Serialize(aWriter);
			}
		}
	}
	// End of JSONArray

	public class JSONObject : JSONNode, IEnumerable
	{
		private Dictionary<string, JSONNode> m_Dict = new Dictionary<string, JSONNode>();

		public override JSONNodeType Tag { get { return JSONNodeType.Object; } }
		public override bool IsObject { get { return true; } }


		public override JSONNode this[string aKey]
		{
			get
			{
				if (m_Dict.ContainsKey(aKey))
					return m_Dict[aKey];
				else
					return new JSONLazyCreator(this, aKey);
			}
			set
			{
				if (value == null)
					value = new JSONNull();
				if (m_Dict.ContainsKey(aKey))
					m_Dict[aKey] = value;
				else
					m_Dict.Add(aKey, value);
			}
		}

		public override JSONNode this[int aIndex]
		{
			get
			{
				if (aIndex < 0 || aIndex >= m_Dict.Count)
					return null;
				return m_Dict.ElementAt(aIndex).Value;
			}
			set
			{
				if (value == null)
					value = new JSONNull();
				if (aIndex < 0 || aIndex >= m_Dict.Count)
					return;
				string key = m_Dict.ElementAt(aIndex).Key;
				m_Dict[key] = value;
			}
		}

		public override int Count
		{
			get { return m_Dict.Count; }
		}

		public override void Add(string aKey, JSONNode aItem)
		{
			if (aItem == null)
				aItem = new JSONNull();

			if (!string.IsNullOrEmpty(aKey))
			{
				if (m_Dict.ContainsKey(aKey))
					m_Dict[aKey] = aItem;
				else
					m_Dict.Add(aKey, aItem);
			}
			else
				m_Dict.Add(Guid.NewGuid().ToString(), aItem);
		}

		public override JSONNode Remove(string aKey)
		{
			if (!m_Dict.ContainsKey(aKey))
				return null;
			JSONNode tmp = m_Dict[aKey];
			m_Dict.Remove(aKey);
			return tmp;
		}

		public override JSONNode Remove(int aIndex)
		{
			if (aIndex < 0 || aIndex >= m_Dict.Count)
				return null;
			var item = m_Dict.ElementAt(aIndex);
			m_Dict.Remove(item.Key);
			return item.Value;
		}

		public override JSONNode Remove(JSONNode aNode)
		{
			try
			{
				var item = m_Dict.Where(k => k.Value == aNode).First();
				m_Dict.Remove(item.Key);
				return aNode;
			}
			catch
			{
				return null;
			}
		}

		public override IEnumerable<JSONNode> Children
		{
			get
			{
				foreach (KeyValuePair<string, JSONNode> N in m_Dict)
					yield return N.Value;
			}
		}

		public IEnumerator GetEnumerator()
		{
			foreach (KeyValuePair<string, JSONNode> N in m_Dict)
				yield return N;
		}

		public override string ToString()
		{
			string result = "{";
			foreach (KeyValuePair<string, JSONNode> N in m_Dict)
			{
				if (result.Length > 2)
					result += ", ";
				result += "\"" + Escape(N.Key) + "\":" + N.Value.ToString();
			}
			result += "}";
			return result;
		}

		internal override string ToString(string aIndent, string aPrefix)
		{
			string result = "{ ";
			foreach (KeyValuePair<string, JSONNode> N in m_Dict)
			{
				if (result.Length > 3)
					result += ", ";
				result += "\n" + aPrefix + aIndent + "\"" + Escape(N.Key) + "\" : ";
				result += N.Value.ToString(aIndent, aPrefix + aIndent);
			}
			result += "\n" + aPrefix + "}";
			return result;
		}

		public override void Serialize(System.IO.BinaryWriter aWriter)
		{
			aWriter.Write((byte)JSONNodeType.Object);
			aWriter.Write(m_Dict.Count);
			foreach (string K in m_Dict.Keys)
			{
				aWriter.Write(K);
				m_Dict[K].Serialize(aWriter);
			}
		}
	}
	// End of JSONObject

	public class JSONString : JSONNode
	{
		private string m_Data;

		public override JSONNodeType Tag { get { return JSONNodeType.String; } }
		public override bool IsString { get { return true; } }

		public override string Value
		{
			get { return m_Data; }
			set
			{
				m_Data = value;
			}
		}

		public JSONString(string aData)
		{
			m_Data = aData;
		}

		public override string ToString()
		{
			return "\"" + Escape(m_Data) + "\"";
		}

		internal override string ToString(string aIndent, string aPrefix)
		{
			return "\"" + Escape(m_Data) + "\"";
		}

		public override void Serialize(System.IO.BinaryWriter aWriter)
		{
			aWriter.Write((byte)JSONNodeType.String);
			aWriter.Write(m_Data);
		}
	}
	// End of JSONString


	public class JSONNumber : JSONNode
	{
		private double m_Data;

		public override JSONNodeType Tag { get { return JSONNodeType.Number; } }
		public override bool IsNumber { get { return true; } }


		public override string Value
		{
			get { return m_Data.ToString(); }
			set
			{
				double v;
				if (double.TryParse(value, out v))
					m_Data = v;
			}
		}

		public override double AsDouble
		{
			get { return m_Data; }
			set { m_Data = value; }
		}

		public JSONNumber(double aData)
		{
			m_Data = aData;
		}

		public JSONNumber(string aData)
		{
			Value = aData;
		}

		public override string ToString()
		{
			return m_Data.ToString();
		}

		internal override string ToString(string aIndent, string aPrefix)
		{
			return m_Data.ToString();
		}

		public override void Serialize(System.IO.BinaryWriter aWriter)
		{
			aWriter.Write((byte)JSONNodeType.Number);
			aWriter.Write(m_Data);
		}
	}
	// End of JSONNumber


	public class JSONBool : JSONNode
	{
		private bool m_Data;

		public override JSONNodeType Tag { get { return JSONNodeType.Boolean; } }
		public override bool IsBoolean { get { return true; } }


		public override string Value
		{
			get { return m_Data.ToString(); }
			set
			{
				bool v;
				if (bool.TryParse(value, out v))
					m_Data = v;
			}
		}
		public override bool AsBool
		{
			get { return m_Data; }
			set { m_Data = value; }
		}

		public JSONBool(bool aData)
		{
			m_Data = aData;
		}

		public JSONBool(string aData)
		{
			Value = aData;
		}

		public override string ToString()
		{
			return (m_Data) ? "true" : "false";
		}

		internal override string ToString(string aIndent, string aPrefix)
		{
			return (m_Data) ? "true" : "false";
		}

		public override void Serialize(System.IO.BinaryWriter aWriter)
		{
			aWriter.Write((byte)JSONNodeType.Boolean);
			aWriter.Write(m_Data);
		}
	}
	// End of JSONBool


	public class JSONNull : JSONNode
	{

		public override JSONNodeType Tag { get { return JSONNodeType.NullValue; } }
		public override bool IsNull { get { return true; } }


		public override string Value
		{
			get { return "null"; }
			set { }
		}
		public override bool AsBool
		{
			get { return false; }
			set { }
		}

		public override string ToString()
		{
			return "null";
		}

		internal override string ToString(string aIndent, string aPrefix)
		{
			return "null";
		}

		public override bool Equals(object obj)
		{
			if (object.ReferenceEquals(this, obj))
				return true;
			return (obj is JSONNull);
		}
		public override int GetHashCode()
		{
			return base.GetHashCode();
		}

		public override void Serialize(System.IO.BinaryWriter aWriter)
		{
			aWriter.Write((byte)JSONNodeType.NullValue);
		}
	}
	// End of JSONNull

	internal class JSONLazyCreator : JSONNode
	{
		private JSONNode m_Node = null;
		private string m_Key = null;

		public override JSONNodeType Tag { get { return JSONNodeType.None; } }

		public JSONLazyCreator(JSONNode aNode)
		{
			m_Node = aNode;
			m_Key = null;
		}

		public JSONLazyCreator(JSONNode aNode, string aKey)
		{
			m_Node = aNode;
			m_Key = aKey;
		}

		private void Set(JSONNode aVal)
		{
			if (m_Key == null)
			{
				m_Node.Add(aVal);
			}
			else
			{
				m_Node.Add(m_Key, aVal);
			}
			m_Node = null; // Be GC friendly.
		}

		public override JSONNode this[int aIndex]
		{
			get
			{
				return new JSONLazyCreator(this);
			}
			set
			{
				var tmp = new JSONArray();
				tmp.Add(value);
				Set(tmp);
			}
		}

		public override JSONNode this[string aKey]
		{
			get
			{
				return new JSONLazyCreator(this, aKey);
			}
			set
			{
				var tmp = new JSONObject();
				tmp.Add(aKey, value);
				Set(tmp);
			}
		}

		public override void Add(JSONNode aItem)
		{
			var tmp = new JSONArray();
			tmp.Add(aItem);
			Set(tmp);
		}

		public override void Add(string aKey, JSONNode aItem)
		{
			var tmp = new JSONObject();
			tmp.Add(aKey, aItem);
			Set(tmp);
		}

		public static bool operator ==(JSONLazyCreator a, object b)
		{
			if (b == null)
				return true;
			return System.Object.ReferenceEquals(a, b);
		}

		public static bool operator !=(JSONLazyCreator a, object b)
		{
			return !(a == b);
		}

		public override bool Equals(object obj)
		{
			if (obj == null)
				return true;
			return System.Object.ReferenceEquals(this, obj);
		}

		public override int GetHashCode()
		{
			return base.GetHashCode();
		}

		public override string ToString()
		{
			return "";
		}

		internal override string ToString(string aIndent, string aPrefix)
		{
			return "";
		}

		public override int AsInt
		{
			get
			{
				JSONNumber tmp = new JSONNumber(0);
				Set(tmp);
				return 0;
			}
			set
			{
				JSONNumber tmp = new JSONNumber(value);
				Set(tmp);
			}
		}

		public override float AsFloat
		{
			get
			{
				JSONNumber tmp = new JSONNumber(0.0f);
				Set(tmp);
				return 0.0f;
			}
			set
			{
				JSONNumber tmp = new JSONNumber(value);
				Set(tmp);
			}
		}

		public override double AsDouble
		{
			get
			{
				JSONNumber tmp = new JSONNumber(0.0);
				Set(tmp);
				return 0.0;
			}
			set
			{
				JSONNumber tmp = new JSONNumber(value);
				Set(tmp);
			}
		}

		public override bool AsBool
		{
			get
			{
				JSONBool tmp = new JSONBool(false);
				Set(tmp);
				return false;
			}
			set
			{
				JSONBool tmp = new JSONBool(value);
				Set(tmp);
			}
		}

		public override JSONArray AsArray
		{
			get
			{
				JSONArray tmp = new JSONArray();
				Set(tmp);
				return tmp;
			}
		}

		public override JSONObject AsObject
		{
			get
			{
				JSONObject tmp = new JSONObject();
				Set(tmp);
				return tmp;
			}
		}
	}
	// End of JSONLazyCreator

	public static class JSON
	{
		public static JSONNode Parse(string aJSON)
		{
			return JSONNode.Parse(aJSON);
		}
	}
}