548 lines
		
	
	
		
			18 KiB
		
	
	
	
		
			C#
		
	
			
		
		
	
	
			548 lines
		
	
	
		
			18 KiB
		
	
	
	
		
			C#
		
	
/*
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 * Copyright (c) 2013 Calvin Rien
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 *
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 * Based on the JSON parser by Patrick van Bergen
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 * http://techblog.procurios.nl/k/618/news/view/14605/14863/How-do-I-write-my-own-parser-for-JSON.html
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 *
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 * Simplified it so that it doesn't throw exceptions
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 * and can be used in Unity iPhone with maximum code stripping.
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 *
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 * Permission is hereby granted, free of charge, to any person obtaining
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 * a copy of this software and associated documentation files (the
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 * "Software"), to deal in the Software without restriction, including
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 * without limitation the rights to use, copy, modify, merge, publish,
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 * distribute, sublicense, and/or sell copies of the Software, and to
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 * permit persons to whom the Software is furnished to do so, subject to
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 * the following conditions:
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 *
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 * The above copyright notice and this permission notice shall be
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 * included in all copies or substantial portions of the Software.
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 *
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 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
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 * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
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 * CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
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 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
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 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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 */
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using System;
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using System.Collections;
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using System.Collections.Generic;
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using System.IO;
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using System.Text;
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namespace TapDBMiniJSON {
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    // Example usage:
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    //
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    //  using UnityEngine;
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    //  using System.Collections;
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    //  using System.Collections.Generic;
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    //  using MiniJSON;
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    //
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    //  public class MiniJSONTest : MonoBehaviour {
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    //      void Start () {
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    //          var jsonString = "{ \"array\": [1.44,2,3], " +
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    //                          "\"object\": {\"key1\":\"value1\", \"key2\":256}, " +
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    //                          "\"string\": \"The quick brown fox \\\"jumps\\\" over the lazy dog \", " +
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    //                          "\"unicode\": \"\\u3041 Men\u00fa sesi\u00f3n\", " +
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    //                          "\"int\": 65536, " +
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    //                          "\"float\": 3.1415926, " +
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    //                          "\"bool\": true, " +
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    //                          "\"null\": null }";
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    //
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    //          var dict = Json.Deserialize(jsonString) as Dictionary<string,object>;
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    //
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    //          XDebug.Log.l("deserialized: " + dict.GetType());
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    //          XDebug.Log.l("dict['array'][0]: " + ((List<object>) dict["array"])[0]);
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    //          XDebug.Log.l("dict['string']: " + (string) dict["string"]);
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    //          XDebug.Log.l("dict['float']: " + (double) dict["float"]); // floats come out as doubles
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    //          XDebug.Log.l("dict['int']: " + (long) dict["int"]); // ints come out as longs
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    //          XDebug.Log.l("dict['unicode']: " + (string) dict["unicode"]);
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    //
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    //          var str = Json.Serialize(dict);
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    //
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    //          XDebug.Log.l("serialized: " + str);
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    //      }
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    //  }
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    /// <summary>
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    /// This class encodes and decodes JSON strings.
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    /// Spec. details, see http://www.json.org/
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    ///
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    /// JSON uses Arrays and Objects. These correspond here to the datatypes IList and IDictionary.
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    /// All numbers are parsed to doubles.
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    /// </summary>
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    public static class Json {
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        /// <summary>
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        /// Parses the string json into a value
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        /// </summary>
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        /// <param name="json">A JSON string.</param>
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        /// <returns>An List<object>, a Dictionary<string, object>, a double, an integer,a string, null, true, or false</returns>
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        public static object Deserialize(string json) {
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            // save the string for debug information
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            if (json == null) {
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                return null;
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            }
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            return Parser.Parse(json);
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        }
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        sealed class Parser : IDisposable {
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            const string WORD_BREAK = "{}[],:\"";
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            public static bool IsWordBreak(char c) {
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                return Char.IsWhiteSpace(c) || WORD_BREAK.IndexOf(c) != -1;
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            }
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            enum TOKEN {
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                NONE,
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                CURLY_OPEN,
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                CURLY_CLOSE,
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                SQUARED_OPEN,
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                SQUARED_CLOSE,
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                COLON,
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                COMMA,
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                STRING,
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                NUMBER,
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                TRUE,
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                FALSE,
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                NULL
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            };
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            StringReader json;
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            Parser(string jsonString) {
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                json = new StringReader(jsonString);
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            }
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            public static object Parse(string jsonString) {
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                using (var instance = new Parser(jsonString)) {
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                    return instance.ParseValue();
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                }
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            }
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            public void Dispose() {
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                json.Dispose();
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                json = null;
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            }
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            Dictionary<string, object> ParseObject() {
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                Dictionary<string, object> table = new Dictionary<string, object>();
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                // ditch opening brace
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                json.Read();
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                // {
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                while (true) {
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                    switch (NextToken) {
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                    case TOKEN.NONE:
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                        return null;
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                    case TOKEN.COMMA:
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                        continue;
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                    case TOKEN.CURLY_CLOSE:
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                        return table;
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                    default:
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                        // name
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                        string name = ParseString();
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                        if (name == null) {
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                            return null;
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                        }
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                        // :
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                        if (NextToken != TOKEN.COLON) {
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                            return null;
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                        }
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                        // ditch the colon
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                        json.Read();
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                        // value
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                        table[name] = ParseValue();
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                        break;
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                    }
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                }
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            }
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            List<object> ParseArray() {
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                List<object> array = new List<object>();
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                // ditch opening bracket
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                json.Read();
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                // [
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                var parsing = true;
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                while (parsing) {
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                    TOKEN nextToken = NextToken;
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                    switch (nextToken) {
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                    case TOKEN.NONE:
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                        return null;
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                    case TOKEN.COMMA:
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                        continue;
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                    case TOKEN.SQUARED_CLOSE:
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                        parsing = false;
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                        break;
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                    default:
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                        object value = ParseByToken(nextToken);
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                        array.Add(value);
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                        break;
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                    }
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                }
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                return array;
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            }
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            object ParseValue() {
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                TOKEN nextToken = NextToken;
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                return ParseByToken(nextToken);
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            }
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            object ParseByToken(TOKEN token) {
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                switch (token) {
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                case TOKEN.STRING:
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                    return ParseString();
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                case TOKEN.NUMBER:
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                    return ParseNumber();
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                case TOKEN.CURLY_OPEN:
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                    return ParseObject();
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                case TOKEN.SQUARED_OPEN:
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                    return ParseArray();
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                case TOKEN.TRUE:
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                    return true;
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                case TOKEN.FALSE:
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                    return false;
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                case TOKEN.NULL:
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                    return null;
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                default:
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                    return null;
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                }
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            }
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            string ParseString() {
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                StringBuilder s = new StringBuilder();
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                char c;
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                // ditch opening quote
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                json.Read();
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                bool parsing = true;
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                while (parsing) {
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                    if (json.Peek() == -1) {
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                        parsing = false;
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                        break;
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                    }
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                    c = NextChar;
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                    switch (c) {
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                    case '"':
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                        parsing = false;
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                        break;
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                    case '\\':
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                        if (json.Peek() == -1) {
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                            parsing = false;
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                            break;
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                        }
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                        c = NextChar;
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                        switch (c) {
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                        case '"':
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                        case '\\':
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                        case '/':
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                            s.Append(c);
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                            break;
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                        case 'b':
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                            s.Append('\b');
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                            break;
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                        case 'f':
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                            s.Append('\f');
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                            break;
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                        case 'n':
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                            s.Append('\n');
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                            break;
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                        case 'r':
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                            s.Append('\r');
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                            break;
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                        case 't':
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                            s.Append('\t');
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                            break;
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                        case 'u':
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                            var hex = new char[4];
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                            for (int i=0; i< 4; i++) {
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                                hex[i] = NextChar;
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                            }
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                            s.Append((char) Convert.ToInt32(new string(hex), 16));
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                            break;
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                        }
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                        break;
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                    default:
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                        s.Append(c);
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                        break;
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                    }
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                }
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                return s.ToString();
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            }
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            object ParseNumber() {
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                string number = NextWord;
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                if (number.IndexOf('.') == -1) {
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                    long parsedInt;
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                    Int64.TryParse(number, out parsedInt);
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                    return parsedInt;
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                }
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                double parsedDouble;
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                Double.TryParse(number, out parsedDouble);
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                return parsedDouble;
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            }
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            void EatWhitespace() {
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                while (Char.IsWhiteSpace(PeekChar)) {
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                    json.Read();
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                    if (json.Peek() == -1) {
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                        break;
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                    }
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                }
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            }
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            char PeekChar {
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                get {
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                    return Convert.ToChar(json.Peek());
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                }
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            }
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            char NextChar {
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                get {
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                    return Convert.ToChar(json.Read());
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                }
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            }
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            string NextWord {
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                get {
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                    StringBuilder word = new StringBuilder();
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                    while (!IsWordBreak(PeekChar)) {
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                        word.Append(NextChar);
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                        if (json.Peek() == -1) {
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                            break;
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                        }
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                    }
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                    return word.ToString();
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                }
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            }
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            TOKEN NextToken {
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                get {
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                    EatWhitespace();
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                    if (json.Peek() == -1) {
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                        return TOKEN.NONE;
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                    }
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                    switch (PeekChar) {
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                    case '{':
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                        return TOKEN.CURLY_OPEN;
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                    case '}':
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                        json.Read();
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                        return TOKEN.CURLY_CLOSE;
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                    case '[':
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                        return TOKEN.SQUARED_OPEN;
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                    case ']':
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                        json.Read();
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                        return TOKEN.SQUARED_CLOSE;
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                    case ',':
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                        json.Read();
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                        return TOKEN.COMMA;
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                    case '"':
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                        return TOKEN.STRING;
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                    case ':':
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                        return TOKEN.COLON;
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                    case '0':
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                    case '1':
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                    case '2':
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                    case '3':
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                    case '4':
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                    case '5':
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                    case '6':
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                    case '7':
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                    case '8':
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                    case '9':
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                    case '-':
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                        return TOKEN.NUMBER;
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                    }
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                    switch (NextWord) {
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                    case "false":
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                        return TOKEN.FALSE;
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                    case "true":
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                        return TOKEN.TRUE;
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                    case "null":
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                        return TOKEN.NULL;
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                    }
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                    return TOKEN.NONE;
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                }
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            }
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        }
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        /// <summary>
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        /// Converts a IDictionary / IList object or a simple type (string, int, etc.) into a JSON string
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        /// </summary>
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        /// <param name="json">A Dictionary<string, object> / List<object></param>
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        /// <returns>A JSON encoded string, or null if object 'json' is not serializable</returns>
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        public static string Serialize(object obj) {
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            return Serializer.Serialize(obj);
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        }
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        sealed class Serializer {
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            StringBuilder builder;
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            Serializer() {
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                builder = new StringBuilder();
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            }
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            public static string Serialize(object obj) {
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                var instance = new Serializer();
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                instance.SerializeValue(obj);
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                return instance.builder.ToString();
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            }
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            void SerializeValue(object value) {
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                IList asList;
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                IDictionary asDict;
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                string asStr;
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                if (value == null) {
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                    builder.Append("null");
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                } else if ((asStr = value as string) != null) {
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                    SerializeString(asStr);
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                } else if (value is bool) {
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                    builder.Append((bool) value ? "true" : "false");
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                } else if ((asList = value as IList) != null) {
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                    SerializeArray(asList);
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                } else if ((asDict = value as IDictionary) != null) {
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                    SerializeObject(asDict);
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                } else if (value is char) {
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                    SerializeString(new string((char) value, 1));
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                } else {
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                    SerializeOther(value);
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                }
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            }
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            void SerializeObject(IDictionary obj) {
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                bool first = true;
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                builder.Append('{');
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                foreach (object e in obj.Keys) {
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                    if (!first) {
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                        builder.Append(',');
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                    }
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                    SerializeString(e.ToString());
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                    builder.Append(':');
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                    SerializeValue(obj[e]);
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                    first = false;
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                }
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                builder.Append('}');
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            }
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            void SerializeArray(IList anArray) {
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                builder.Append('[');
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                bool first = true;
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                foreach (object obj in anArray) {
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                    if (!first) {
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                        builder.Append(',');
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                    }
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                    SerializeValue(obj);
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                    first = false;
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                }
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                builder.Append(']');
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            }
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            void SerializeString(string str) {
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                builder.Append('\"');
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                char[] charArray = str.ToCharArray();
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						|
                foreach (var c in charArray) {
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                    switch (c) {
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                    case '"':
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                        builder.Append("\\\"");
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                        break;
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						|
                    case '\\':
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                        builder.Append("\\\\");
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                        break;
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                    case '\b':
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                        builder.Append("\\b");
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                        break;
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						|
                    case '\f':
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                        builder.Append("\\f");
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                        break;
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						|
                    case '\n':
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                        builder.Append("\\n");
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                        break;
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                    case '\r':
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                        builder.Append("\\r");
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                        break;
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						|
                    case '\t':
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                        builder.Append("\\t");
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                        break;
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                    default:
 | 
						|
                        int codepoint = Convert.ToInt32(c);
 | 
						|
                        if ((codepoint >= 32) && (codepoint <= 126)) {
 | 
						|
                            builder.Append(c);
 | 
						|
                        } else {
 | 
						|
                            builder.Append("\\u");
 | 
						|
                            builder.Append(codepoint.ToString("x4"));
 | 
						|
                        }
 | 
						|
                        break;
 | 
						|
                    }
 | 
						|
                }
 | 
						|
 | 
						|
                builder.Append('\"');
 | 
						|
            }
 | 
						|
 | 
						|
            void SerializeOther(object value) {
 | 
						|
                // NOTE: decimals lose precision during serialization.
 | 
						|
                // They always have, I'm just letting you know.
 | 
						|
                // Previously floats and doubles lost precision too.
 | 
						|
                if (value is float) {
 | 
						|
                    builder.Append(((float) value).ToString("R"));
 | 
						|
                } else if (value is int
 | 
						|
                    || value is uint
 | 
						|
                    || value is long
 | 
						|
                    || value is sbyte
 | 
						|
                    || value is byte
 | 
						|
                    || value is short
 | 
						|
                    || value is ushort
 | 
						|
                    || value is ulong) {
 | 
						|
                    builder.Append(value);
 | 
						|
                } else if (value is double
 | 
						|
                    || value is decimal) {
 | 
						|
                    builder.Append(Convert.ToDouble(value).ToString("R"));
 | 
						|
                } else {
 | 
						|
                    SerializeString(value.ToString());
 | 
						|
                }
 | 
						|
            }
 | 
						|
        }
 | 
						|
    }
 | 
						|
}
 |