Boomlagoon JSON 1.4
作者：互联网
/* JSONObject.cs -- Simple C# JSON parser
version 1.4 - March 17, 2014
Copyright (C) 2012 Boomlagoon Ltd.
contact@boomlagoon.com
*/
#define PARSE_ESCAPED_UNICODE
#if UNITY_EDITOR || UNITY_ANDROID || UNITY_IOS || UNITY_STANDALONE || UNITY_WEBPLAYER || UNITY_WII || UNITY_PS3 || UNITY_XBOX360 || UNITY_FLASH
#define USE_UNITY_DEBUGGING
#endif
using System.Collections;
using System.Collections.Generic;
using System.Globalization;
using System.Linq;
using System.Text;
#if PARSE_ESCAPED_UNICODE
using System.Text.RegularExpressions;
#endif
#if USE_UNITY_DEBUGGING
using UnityEngine;
#else
using System.Diagnostics;
#endif
namespace Boomlagoon.JSON
{
public static class Extensions
{
public static T Pop<T>(this List<T> list)
{
var result = list[list.Count - 1];
list.RemoveAt(list.Count - 1);
return result;
}
}
static class JSONLogger
{
#if USE_UNITY_DEBUGGING
public static void Log(string str)
{
Debug.Log(str);
}
public static void Error(string str)
{
Debug.LogError(str);
}
#else
public static void Log(string str) {
Debug.WriteLine(str);
}
public static void Error(string str) {
Debug.WriteLine(str);
}
#endif
}
public enum JSONValueType
{
String,
Number,
Object,
Array,
Boolean,
Null
}
public class JSONValue
{
public JSONValue(JSONValueType type)
{
Type = type;
}
public JSONValue(string str)
{
Type = JSONValueType.String;
Str = str;
}
public JSONValue(double number)
{
Type = JSONValueType.Number;
Number = number;
}
public JSONValue(JSONObject obj)
{
if (obj == null)
{
Type = JSONValueType.Null;
}
else
{
Type = JSONValueType.Object;
Obj = obj;
}
}
public JSONValue(JSONArray array)
{
Type = JSONValueType.Array;
Array = array;
}
public JSONValue(bool boolean)
{
Type = JSONValueType.Boolean;
Boolean = boolean;
}
/// <summary>
/// Construct a copy of the JSONValue given as a parameter
/// </summary>
/// <param name="value"></param>
public JSONValue(JSONValue value)
{
Type = value.Type;
switch (Type)
{
case JSONValueType.String:
Str = value.Str;
break;
case JSONValueType.Boolean:
Boolean = value.Boolean;
break;
case JSONValueType.Number:
Number = value.Number;
break;
case JSONValueType.Object:
if (value.Obj != null)
{
Obj = new JSONObject(value.Obj);
}
break;
case JSONValueType.Array:
Array = new JSONArray(value.Array);
break;
}
}
public JSONValueType Type { get; private set; }
public string Str { get; set; }
public double Number { get; set; }
public JSONObject Obj { get; set; }
public JSONArray Array { get; set; }
public bool Boolean { get; set; }
public JSONValue Parent { get; set; }
public static implicit operator JSONValue(string str)
{
return new JSONValue(str);
}
public static implicit operator JSONValue(double number)
{
return new JSONValue(number);
}
public static implicit operator JSONValue(JSONObject obj)
{
return new JSONValue(obj);
}
public static implicit operator JSONValue(JSONArray array)
{
return new JSONValue(array);
}
public static implicit operator JSONValue(bool boolean)
{
return new JSONValue(boolean);
}
/// <returns>String representation of this JSONValue</returns>
public override string ToString()
{
switch (Type)
{
case JSONValueType.Object:
return Obj.ToString();
case JSONValueType.Array:
return Array.ToString();
case JSONValueType.Boolean:
return Boolean ? "true" : "false";
case JSONValueType.Number:
return Number.ToString();
case JSONValueType.String:
return "\"" + Str + "\"";
case JSONValueType.Null:
return "null";
}
return "null";
}
public string ToMyString()
{
switch (Type)
{
case JSONValueType.Object:
return Obj.ToString();
case JSONValueType.Array:
return Array.ToString();
case JSONValueType.Boolean:
return Boolean ? "true" : "false";
case JSONValueType.Number:
return Number.ToString();
case JSONValueType.String:
if (string.IsNullOrEmpty(Str)) return string.Empty;
return "\"" + Str + "\"";
case JSONValueType.Null:
return string.Empty;
}
return string.Empty;
}
}
public class JSONArray : IEnumerable<JSONValue>
{
private readonly List<JSONValue> values = new List<JSONValue>();
public JSONArray()
{
}
/// <summary>
/// Construct a new array and copy each value from the given array into the new one
/// </summary>
/// <param name="array"></param>
public JSONArray(JSONArray array)
{
values = new List<JSONValue>();
foreach (var v in array.values)
{
values.Add(new JSONValue(v));
}
}
/// <summary>
/// Add a JSONValue to this array
/// </summary>
/// <param name="value"></param>
public void Add(JSONValue value)
{
values.Add(value);
}
public void AddNotNull(JSONValue value)
{
if (string.IsNullOrEmpty(value.ToString())) return;
values.Add(value);
}
public JSONValue this[int index]
{
get { return values[index]; }
set { values[index] = value; }
}
/// <returns>
/// Return the length of the array
/// </returns>
public int Length
{
get { return values.Count; }
}
/// <returns>String representation of this JSONArray</returns>
public override string ToString()
{
var stringBuilder = new StringBuilder();
stringBuilder.Append('[');
foreach (var value in values)
{
stringBuilder.Append(value.ToString());
stringBuilder.Append(',');
}
if (values.Count > 0)
{
stringBuilder.Remove(stringBuilder.Length - 1, 1);
}
stringBuilder.Append(']');
return stringBuilder.ToString();
}
public IEnumerator<JSONValue> GetEnumerator()
{
return values.GetEnumerator();
}
IEnumerator IEnumerable.GetEnumerator()
{
return values.GetEnumerator();
}
/// <summary>
/// Attempt to parse a string as a JSON array.
/// </summary>
/// <param name="jsonString"></param>
/// <returns>A new JSONArray object if successful, null otherwise.</returns>
public static JSONArray Parse(string jsonString)
{
var tempObject = JSONObject.Parse("{ \"array\" :" + jsonString + '}');
return tempObject == null ? null : tempObject.GetValue("array").Array;
}
/// <summary>
/// Empty the array of all values.
/// </summary>
public void Clear()
{
values.Clear();
}
/// <summary>
/// Remove the value at the given index, if it exists.
/// </summary>
/// <param name="index"></param>
public void Remove(int index)
{
if (index >= 0 && index < values.Count)
{
values.RemoveAt(index);
}
else
{
JSONLogger.Error("index out of range: " + index + " (Expected 0 <= index < " + values.Count + ")");
}
}
/// <summary>
/// Concatenate two JSONArrays
/// </summary>
/// <param name="lhs"></param>
/// <param name="rhs"></param>
/// <returns>A new JSONArray that is the result of adding all of the right-hand side array's values to the left-hand side array.</returns>
public static JSONArray operator +(JSONArray lhs, JSONArray rhs)
{
var result = new JSONArray(lhs);
foreach (var value in rhs.values)
{
result.Add(value);
}
return result;
}
}
public class JSONObject : IEnumerable<KeyValuePair<string, JSONValue>>
{
private enum JSONParsingState
{
Object,
Array,
EndObject,
EndArray,
Key,
Value,
KeyValueSeparator,
ValueSeparator,
String,
Number,
Boolean,
Null
}
private readonly IDictionary<string, JSONValue> values = new Dictionary<string, JSONValue>();
#if PARSE_ESCAPED_UNICODE
private static readonly Regex unicodeRegex = new Regex(@"\\u([0-9a-fA-F]{4})");
private static readonly byte[] unicodeBytes = new byte[2];
#endif
public JSONObject()
{
}
/// <summary>
/// Construct a copy of the given JSONObject.
/// </summary>
/// <param name="other"></param>
public JSONObject(JSONObject other)
{
values = new Dictionary<string, JSONValue>();
if (other != null)
{
foreach (var keyValuePair in other.values)
{
values[keyValuePair.Key] = new JSONValue(keyValuePair.Value);
}
}
}
/// <param name="key"></param>
/// <returns>Does 'key' exist in this object.</returns>
public bool ContainsKey(string key)
{
return values.ContainsKey(key);
}
public JSONValue GetValue(string key)
{
JSONValue value;
values.TryGetValue(key, out value);
return value;
}
public string GetString(string key)
{
var value = GetValue(key);
if (value == null)
{
// JSONLogger.Error(key + "(string) == null");
return string.Empty;
}
return value.Str;
}
public double GetNumber(string key)
{
var value = GetValue(key);
if (value == null)
{
// JSONLogger.Error(key + " == null");
return double.NaN;
}
return value.Number;
}
public int GetInt(string key)
{
var value = GetValue(key);
if (value == null)
{
// JSONLogger.Error(key + " == null");
return 0;
}
return (int)value.Number;
}
public JSONObject GetObject(string key)
{
var value = GetValue(key);
if (value == null)
{
// JSONLogger.Error(key + " == null");
return null;
}
return value.Obj;
}
public bool GetBoolean(string key)
{
var value = GetValue(key);
if (value == null)
{
// JSONLogger.Error(key + " == null");
return false;
}
return value.Boolean;
}
public JSONArray GetArray(string key)
{
var value = GetValue(key);
if (value == null)
{
// JSONLogger.Error(key + " == null");
return null;
}
return value.Array;
}
public JSONValue this[string key]
{
get { return GetValue(key); }
set { values[key] = value; }
}
public void Add(string key, JSONValue value)
{
values[key] = value;
}
public void AddNotNull(string key, JSONValue value)
{
if (string.IsNullOrEmpty(value.ToMyString())) return;
values[key] = value;
}
public void Add(KeyValuePair<string, JSONValue> pair)
{
values[pair.Key] = pair.Value;
}
public ICollection<string> GetKeys()
{
return values.Keys;
}
public bool IsEmpty()
{
return values.Count == 0;
}
/// <summary>
/// Attempt to parse a string into a JSONObject.
/// </summary>
/// <param name="jsonString"></param>
/// <returns>A new JSONObject or null if parsing fails.</returns>
public static JSONObject Parse(string jsonString)
{
if (string.IsNullOrEmpty(jsonString))
{
return null;
}
JSONValue currentValue = null;
var keyList = new List<string>();
var state = JSONParsingState.Object;
for (var startPosition = 0; startPosition < jsonString.Length; ++startPosition)
{
startPosition = SkipWhitespace(jsonString, startPosition);
switch (state)
{
case JSONParsingState.Object:
if (jsonString[startPosition] != '{')
{
return Fail('{', startPosition);
}
JSONValue newObj = new JSONObject();
if (currentValue != null)
{
newObj.Parent = currentValue;
}
currentValue = newObj;
state = JSONParsingState.Key;
break;
case JSONParsingState.EndObject:
if (jsonString[startPosition] != '}')
{
return Fail('}', startPosition);
}
if (currentValue.Parent == null)
{
return currentValue.Obj;
}
switch (currentValue.Parent.Type)
{
case JSONValueType.Object:
currentValue.Parent.Obj.values[keyList.Pop()] = new JSONValue(currentValue.Obj);
break;
case JSONValueType.Array:
currentValue.Parent.Array.Add(new JSONValue(currentValue.Obj));
break;
default:
return Fail("valid object", startPosition);
}
currentValue = currentValue.Parent;
state = JSONParsingState.ValueSeparator;
break;
case JSONParsingState.Key:
if (jsonString[startPosition] == '}')
{
--startPosition;
state = JSONParsingState.EndObject;
break;
}
var key = ParseString(jsonString, ref startPosition);
if (key == null)
{
return Fail("key string", startPosition);
}
keyList.Add(key);
state = JSONParsingState.KeyValueSeparator;
break;
case JSONParsingState.KeyValueSeparator:
if (jsonString[startPosition] != ':')
{
return Fail(':', startPosition);
}
state = JSONParsingState.Value;
break;
case JSONParsingState.ValueSeparator:
switch (jsonString[startPosition])
{
case ',':
state = currentValue.Type == JSONValueType.Object ? JSONParsingState.Key : JSONParsingState.Value;
break;
case '}':
state = JSONParsingState.EndObject;
--startPosition;
break;
case ']':
state = JSONParsingState.EndArray;
--startPosition;
break;
default:
return Fail(", } ]", startPosition);
}
break;
case JSONParsingState.Value:
{
var c = jsonString[startPosition];
if (c == '"')
{
state = JSONParsingState.String;
}
else if (char.IsDigit(c) || c == '-')
{
state = JSONParsingState.Number;
}
else
switch (c)
{
case '{':
state = JSONParsingState.Object;
break;
case '[':
state = JSONParsingState.Array;
break;
case ']':
if (currentValue.Type == JSONValueType.Array)
{
state = JSONParsingState.EndArray;
}
else
{
return Fail("valid array", startPosition);
}
break;
case 'f':
case 't':
state = JSONParsingState.Boolean;
break;
case 'n':
state = JSONParsingState.Null;
break;
default:
return Fail("beginning of value", startPosition);
}
--startPosition; //To re-evaluate this char in the newly selected state
break;
}
case JSONParsingState.String:
var str = ParseString(jsonString, ref startPosition);
if (str == null)
{
return Fail("string value", startPosition);
}
switch (currentValue.Type)
{
case JSONValueType.Object:
currentValue.Obj.values[keyList.Pop()] = new JSONValue(str);
break;
case JSONValueType.Array:
currentValue.Array.Add(str);
break;
default:
JSONLogger.Error("Fatal error, current JSON value not valid");
return null;
}
state = JSONParsingState.ValueSeparator;
break;
case JSONParsingState.Number:
var number = ParseNumber(jsonString, ref startPosition);
if (double.IsNaN(number))
{
return Fail("valid number", startPosition);
}
switch (currentValue.Type)
{
case JSONValueType.Object:
currentValue.Obj.values[keyList.Pop()] = new JSONValue(number);
break;
case JSONValueType.Array:
currentValue.Array.Add(number);
break;
default:
JSONLogger.Error("Fatal error, current JSON value not valid");
return null;
}
state = JSONParsingState.ValueSeparator;
break;
case JSONParsingState.Boolean:
if (jsonString[startPosition] == 't')
{
if (jsonString.Length < startPosition + 4 ||
jsonString[startPosition + 1] != 'r' ||
jsonString[startPosition + 2] != 'u' ||
jsonString[startPosition + 3] != 'e')
{
return Fail("true", startPosition);
}
switch (currentValue.Type)
{
case JSONValueType.Object:
currentValue.Obj.values[keyList.Pop()] = new JSONValue(true);
break;
case JSONValueType.Array:
currentValue.Array.Add(new JSONValue(true));
break;
default:
JSONLogger.Error("Fatal error, current JSON value not valid");
return null;
}
startPosition += 3;
}
else
{
if (jsonString.Length < startPosition + 5 ||
jsonString[startPosition + 1] != 'a' ||
jsonString[startPosition + 2] != 'l' ||
jsonString[startPosition + 3] != 's' ||
jsonString[startPosition + 4] != 'e')
{
return Fail("false", startPosition);
}
switch (currentValue.Type)
{
case JSONValueType.Object:
currentValue.Obj.values[keyList.Pop()] = new JSONValue(false);
break;
case JSONValueType.Array:
currentValue.Array.Add(new JSONValue(false));
break;
default:
JSONLogger.Error("Fatal error, current JSON value not valid");
return null;
}
startPosition += 4;
}
state = JSONParsingState.ValueSeparator;
break;
case JSONParsingState.Array:
if (jsonString[startPosition] != '[')
{
return Fail('[', startPosition);
}
JSONValue newArray = new JSONArray();
if (currentValue != null)
{
newArray.Parent = currentValue;
}
currentValue = newArray;
state = JSONParsingState.Value;
break;
case JSONParsingState.EndArray:
if (jsonString[startPosition] != ']')
{
return Fail(']', startPosition);
}
if (currentValue.Parent == null)
{
return currentValue.Obj;
}
switch (currentValue.Parent.Type)
{
case JSONValueType.Object:
currentValue.Parent.Obj.values[keyList.Pop()] = new JSONValue(currentValue.Array);
break;
case JSONValueType.Array:
currentValue.Parent.Array.Add(new JSONValue(currentValue.Array));
break;
default:
return Fail("valid object", startPosition);
}
currentValue = currentValue.Parent;
state = JSONParsingState.ValueSeparator;
break;
case JSONParsingState.Null:
if (jsonString[startPosition] == 'n')
{
if (jsonString.Length < startPosition + 4 ||
jsonString[startPosition + 1] != 'u' ||
jsonString[startPosition + 2] != 'l' ||
jsonString[startPosition + 3] != 'l')
{
return Fail("null", startPosition);
}
switch (currentValue.Type)
{
case JSONValueType.Object:
currentValue.Obj.values[keyList.Pop()] = new JSONValue(JSONValueType.Null);
break;
case JSONValueType.Array:
currentValue.Array.Add(new JSONValue(JSONValueType.Null));
break;
default:
JSONLogger.Error("Fatal error, current JSON value not valid");
return null;
}
startPosition += 3;
}
state = JSONParsingState.ValueSeparator;
break;
}
}
JSONLogger.Error("Unexpected end of string");
return null;
}
private static int SkipWhitespace(string str, int pos)
{
for (; pos < str.Length && char.IsWhiteSpace(str[pos]); ++pos) ;
return pos;
}
private static string ParseString(string str, ref int startPosition)
{
if (str[startPosition] != '"' || startPosition + 1 >= str.Length)
{
Fail('"', startPosition);
return null;
}
var endPosition = str.IndexOf('"', startPosition + 1);
if (endPosition <= startPosition)
{
Fail('"', startPosition + 1);
return null;
}
while (str[endPosition - 1] == '\\')
{
endPosition = str.IndexOf('"', endPosition + 1);
if (endPosition <= startPosition)
{
Fail('"', startPosition + 1);
return null;
}
}
var result = string.Empty;
if (endPosition > startPosition + 1)
{
result = str.Substring(startPosition + 1, endPosition - startPosition - 1);
}
startPosition = endPosition;
#if PARSE_ESCAPED_UNICODE
// Parse Unicode characters that are escaped as \uXXXX
do
{
Match m = unicodeRegex.Match(result);
if (!m.Success)
{
break;
}
string s = m.Groups[1].Captures[0].Value;
unicodeBytes[1] = byte.Parse(s.Substring(0, 2), NumberStyles.HexNumber);
unicodeBytes[0] = byte.Parse(s.Substring(2, 2), NumberStyles.HexNumber);
s = Encoding.Unicode.GetString(unicodeBytes);
result = result.Replace(m.Value, s);
} while (true);
#endif
return result;
}
private static double ParseNumber(string str, ref int startPosition)
{
if (startPosition >= str.Length || (!char.IsDigit(str[startPosition]) && str[startPosition] != '-'))
{
return double.NaN;
}
var endPosition = startPosition + 1;
for (;
endPosition < str.Length && str[endPosition] != ',' && str[endPosition] != ']' && str[endPosition] != '}';
++endPosition) ;
double result;
if (
!double.TryParse(str.Substring(startPosition, endPosition - startPosition), System.Globalization.NumberStyles.Float,
System.Globalization.CultureInfo.InvariantCulture, out result))
{
return double.NaN;
}
startPosition = endPosition - 1;
return result;
}
private static JSONObject Fail(char expected, int position)
{
return Fail(new string(expected, 1), position);
}
private static JSONObject Fail(string expected, int position)
{
JSONLogger.Error("Invalid json string, expecting " + expected + " at " + position);
return null;
}
/// <returns>String representation of this JSONObject</returns>
public override string ToString()
{
var stringBuilder = new StringBuilder();
stringBuilder.Append('{');
foreach (var pair in values)
{
stringBuilder.Append("\"" + pair.Key + "\"");
stringBuilder.Append(':');
stringBuilder.Append(pair.Value.ToString());
stringBuilder.Append(',');
}
if (values.Count > 0)
{
stringBuilder.Remove(stringBuilder.Length - 1, 1);
}
stringBuilder.Append('}');
return stringBuilder.ToString();
}
public IEnumerator<KeyValuePair<string, JSONValue>> GetEnumerator()
{
return values.GetEnumerator();
}
IEnumerator IEnumerable.GetEnumerator()
{
return values.GetEnumerator();
}
/// <summary>
/// Empty this JSONObject of all values.
/// </summary>
public void Clear()
{
values.Clear();
}
/// <summary>
/// Remove the JSONValue attached to the given key.
/// </summary>
/// <param name="key"></param>
public void Remove(string key)
{
if (values.ContainsKey(key))
{
values.Remove(key);
}
}
}
}
标签：1.4,case,Boomlagoon,return,startPosition,value,JSON,JSONValue,public 来源： https://blog.csdn.net/bianchengxiaosheng/article/details/114989602