627 lines
20 KiB
C#
627 lines
20 KiB
C#
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/*
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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.Globalization;
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namespace SRF
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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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// 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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// Debug.Log("deserialized: " + dict.GetType());
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// Debug.Log("dict['array'][0]: " + ((List<object>) dict["array"])[0]);
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// Debug.Log("dict['string']: " + (string) dict["string"]);
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// Debug.Log("dict['float']: " + (double) dict["float"]); // floats come out as doubles
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// Debug.Log("dict['int']: " + (long) dict["int"]); // ints come out as longs
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// Debug.Log("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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// Debug.Log("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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/// 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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{
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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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{
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// save the string for debug information
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if (json == null)
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{
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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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/// <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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{
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return Serializer.Serialize(obj);
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}
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private sealed class Parser : IDisposable
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{
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private const string WORD_BREAK = "{}[],:\"";
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private StringReader json;
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private Parser(string jsonString)
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{
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json = new StringReader(jsonString);
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}
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private char PeekChar
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{
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get { return Convert.ToChar(json.Peek()); }
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}
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private char NextChar
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{
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get { return Convert.ToChar(json.Read()); }
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}
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private string NextWord
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{
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get
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{
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var word = new StringBuilder();
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while (!IsWordBreak(PeekChar))
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{
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word.Append(NextChar);
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if (json.Peek() == -1)
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{
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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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private TOKEN NextToken
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{
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get
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{
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EatWhitespace();
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if (json.Peek() == -1)
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{
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return TOKEN.NONE;
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}
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switch (PeekChar)
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{
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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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{
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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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public void Dispose()
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{
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json.Dispose();
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json = null;
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}
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public static bool IsWordBreak(char c)
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{
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return char.IsWhiteSpace(c) || WORD_BREAK.IndexOf(c) != -1;
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}
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public static object Parse(string jsonString)
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{
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using (var instance = new Parser(jsonString))
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{
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return instance.ParseValue();
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}
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}
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private Dictionary<string, object> ParseObject()
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{
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var 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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{
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switch (NextToken)
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{
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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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var name = ParseString();
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if (name == null)
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{
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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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{
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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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private List<object> ParseArray()
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{
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var 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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{
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var nextToken = NextToken;
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switch (nextToken)
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{
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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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var 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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private object ParseValue()
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{
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var nextToken = NextToken;
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return ParseByToken(nextToken);
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}
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private object ParseByToken(TOKEN token)
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{
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switch (token)
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{
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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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private string ParseString()
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{
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var 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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var parsing = true;
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while (parsing)
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{
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if (json.Peek() == -1)
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{
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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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{
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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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{
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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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{
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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 (var i = 0; i < 4; i++)
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{
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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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private object ParseNumber()
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{
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var number = NextWord;
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if (number.IndexOf('.') == -1)
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{
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long parsedInt;
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long.TryParse(number, out parsedInt);
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return parsedInt;
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
double parsedDouble;
|
|||
|
|
double.TryParse(number, out parsedDouble);
|
|||
|
|
return parsedDouble;
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
private void EatWhitespace()
|
|||
|
|
{
|
|||
|
|
while (char.IsWhiteSpace(PeekChar))
|
|||
|
|
{
|
|||
|
|
json.Read();
|
|||
|
|
|
|||
|
|
if (json.Peek() == -1)
|
|||
|
|
{
|
|||
|
|
break;
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
private enum TOKEN
|
|||
|
|
{
|
|||
|
|
NONE,
|
|||
|
|
CURLY_OPEN,
|
|||
|
|
CURLY_CLOSE,
|
|||
|
|
SQUARED_OPEN,
|
|||
|
|
SQUARED_CLOSE,
|
|||
|
|
COLON,
|
|||
|
|
COMMA,
|
|||
|
|
STRING,
|
|||
|
|
NUMBER,
|
|||
|
|
TRUE,
|
|||
|
|
FALSE,
|
|||
|
|
NULL
|
|||
|
|
};
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
private sealed class Serializer
|
|||
|
|
{
|
|||
|
|
private StringBuilder builder;
|
|||
|
|
|
|||
|
|
private Serializer()
|
|||
|
|
{
|
|||
|
|
builder = new StringBuilder();
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
public static string Serialize(object obj)
|
|||
|
|
{
|
|||
|
|
var instance = new Serializer();
|
|||
|
|
|
|||
|
|
instance.SerializeValue(obj);
|
|||
|
|
|
|||
|
|
return instance.builder.ToString();
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
private void SerializeValue(object value)
|
|||
|
|
{
|
|||
|
|
IList asList;
|
|||
|
|
IDictionary asDict;
|
|||
|
|
string asStr;
|
|||
|
|
|
|||
|
|
if (value == null)
|
|||
|
|
{
|
|||
|
|
builder.Append("null");
|
|||
|
|
}
|
|||
|
|
else if ((asStr = value as string) != null)
|
|||
|
|
{
|
|||
|
|
SerializeString(asStr);
|
|||
|
|
}
|
|||
|
|
else if (value is bool)
|
|||
|
|
{
|
|||
|
|
builder.Append((bool) value ? "true" : "false");
|
|||
|
|
}
|
|||
|
|
else if ((asList = value as IList) != null)
|
|||
|
|
{
|
|||
|
|
SerializeArray(asList);
|
|||
|
|
}
|
|||
|
|
else if ((asDict = value as IDictionary) != null)
|
|||
|
|
{
|
|||
|
|
SerializeObject(asDict);
|
|||
|
|
}
|
|||
|
|
else if (value is char)
|
|||
|
|
{
|
|||
|
|
SerializeString(new string((char) value, 1));
|
|||
|
|
}
|
|||
|
|
else
|
|||
|
|
{
|
|||
|
|
SerializeOther(value);
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
private void SerializeObject(IDictionary obj)
|
|||
|
|
{
|
|||
|
|
var first = true;
|
|||
|
|
|
|||
|
|
builder.Append('{');
|
|||
|
|
|
|||
|
|
foreach (var e in obj.Keys)
|
|||
|
|
{
|
|||
|
|
if (!first)
|
|||
|
|
{
|
|||
|
|
builder.Append(',');
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
SerializeString(e.ToString());
|
|||
|
|
builder.Append(':');
|
|||
|
|
|
|||
|
|
SerializeValue(obj[e]);
|
|||
|
|
|
|||
|
|
first = false;
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
builder.Append('}');
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
private void SerializeArray(IList anArray)
|
|||
|
|
{
|
|||
|
|
builder.Append('[');
|
|||
|
|
|
|||
|
|
var first = true;
|
|||
|
|
|
|||
|
|
foreach (var obj in anArray)
|
|||
|
|
{
|
|||
|
|
if (!first)
|
|||
|
|
{
|
|||
|
|
builder.Append(',');
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
SerializeValue(obj);
|
|||
|
|
|
|||
|
|
first = false;
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
builder.Append(']');
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
private void SerializeString(string str)
|
|||
|
|
{
|
|||
|
|
builder.Append('\"');
|
|||
|
|
|
|||
|
|
var charArray = str.ToCharArray();
|
|||
|
|
foreach (var c in charArray)
|
|||
|
|
{
|
|||
|
|
switch (c)
|
|||
|
|
{
|
|||
|
|
case '"':
|
|||
|
|
builder.Append("\\\"");
|
|||
|
|
break;
|
|||
|
|
case '\\':
|
|||
|
|
builder.Append("\\\\");
|
|||
|
|
break;
|
|||
|
|
case '\b':
|
|||
|
|
builder.Append("\\b");
|
|||
|
|
break;
|
|||
|
|
case '\f':
|
|||
|
|
builder.Append("\\f");
|
|||
|
|
break;
|
|||
|
|
case '\n':
|
|||
|
|
builder.Append("\\n");
|
|||
|
|
break;
|
|||
|
|
case '\r':
|
|||
|
|
builder.Append("\\r");
|
|||
|
|
break;
|
|||
|
|
case '\t':
|
|||
|
|
builder.Append("\\t");
|
|||
|
|
break;
|
|||
|
|
default:
|
|||
|
|
var codepoint = Convert.ToInt32(c);
|
|||
|
|
if ((codepoint >= 32) && (codepoint <= 126))
|
|||
|
|
{
|
|||
|
|
builder.Append(c);
|
|||
|
|
}
|
|||
|
|
else
|
|||
|
|
{
|
|||
|
|
builder.Append("\\u");
|
|||
|
|
builder.Append(codepoint.ToString("x4"));
|
|||
|
|
}
|
|||
|
|
break;
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
builder.Append('\"');
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
private 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", CultureInfo.InvariantCulture));
|
|||
|
|
}
|
|||
|
|
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", CultureInfo.InvariantCulture));
|
|||
|
|
}
|
|||
|
|
else
|
|||
|
|
{
|
|||
|
|
SerializeString(value.ToString());
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
}
|