/// <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);
}
public static void Serialize(object obj, JSONObject jsonObject)
{
Type rootType = obj.GetType();
foreach (var member in rootType.GetMembers())
{
// Iterate through all fields with JSONAttribute from root object
JSONAttribute[] attrFields = (JSONAttribute[])member.GetCustomAttributes(typeof(JSONAttribute), true);
foreach (JSONAttribute attrField in attrFields)
{
string data = attrField.data; // Get the data name of the field
FieldInfo info = rootType.GetField(data); // Create a connection with the field
if (info == null) // If no field next (probably wrong design of the class)
{
continue;
}
AttrEnum attrType = attrField.attrType; // Get the type of the attribute
// Type is either object, item or array.
switch (attrType)
{
case AttrEnum.AttrObject:
{
JSONObject jsonChild = new JSONObject();
jsonObject.Add(data, jsonChild);
Serialize(info.GetValue(obj), jsonChild);
break;
}
case AttrEnum.AttrItem:
{
object val = info.GetValue(obj);
string result = val.ToString();
Type attrFieldType = attrField.type;
if (attrFieldType == typeof(Color))
{
Color col = (Color)val;
result = ((int)(col.r * 255f)).ToString() + ","
+ ((int)(col.g * 255f)).ToString() + ","
+ ((int)(col.b * 255f)).ToString() + ","
+ ((int)(col.a * 255f)).ToString();
}
else if (attrFieldType == typeof(Vector2))
{
Vector2 v = (Vector2)val;
result = v.x.ToString() + "," + v.y.ToString();
}
else if (attrFieldType == typeof(Vector3))
{
Vector3 v = (Vector3)val;
result = v.x.ToString() + "," + v.y.ToString() + "," + v.z.ToString();
}
else if (attrFieldType == typeof(Vector4))
{
Vector4 v = (Vector4)val;
result = v.x.ToString() + "," + v.y.ToString() + "," + v.z.ToString() + v.z.ToString();
}
JSONValue value = new JSONValue(result);
jsonObject.Add(data, value);
break;
}
case AttrEnum.AttrArray:
{
object[] val = (object[])info.GetValue(obj);
JSONArray jsonArray = new JSONArray();
jsonObject.Add(data, jsonArray);
foreach (object v in val)
{
JSONObject jsonChild = new JSONObject();
Serialize(v, jsonChild);
jsonArray.Add(jsonChild);
}
break;
}
}
}
}
}
public static JSONValue GetJSONValue(object objValue)
{
JSONValue jsonValue = null;
if (objValue == null)
{
//空对象进来
return(new JSONNullValue());
}
Type thisType = objValue.GetType();
if (thisType == typeof(System.Int32))
{
jsonValue = new JSONNumberValue(Convert.ToInt32(objValue));
}
else if (thisType == typeof(System.Single))
{
jsonValue = new JSONNumberValue(Convert.ToSingle(objValue));
}
else if (thisType == typeof(System.Double))
{
jsonValue = new JSONNumberValue(Convert.ToDouble(objValue));
}
else if (thisType == typeof(System.Decimal))
{
jsonValue = new JSONNumberValue(Convert.ToDecimal(objValue));
}
else if (thisType == typeof(System.Byte))
{
jsonValue = new JSONNumberValue(Convert.ToByte(objValue));
}
else if (thisType == typeof(System.String))
{
jsonValue = new JSONStringValue(Convert.ToString(objValue));
}
else if (thisType == typeof(System.Boolean))
{
jsonValue = new JSONBoolValue(Convert.ToBoolean(objValue));
}
else if (thisType.BaseType == typeof(System.Enum))
{
jsonValue = new JSONStringValue(Enum.GetName(thisType, objValue));
}
else if (thisType.IsArray)
{
List <JSONValue> jsonValues = new List <JSONValue>();
Array arrValue = (Array)objValue;
for (int x = 0; x < arrValue.Length; x++)
{
JSONValue jsValue = GetJSONValue(arrValue.GetValue(x));
jsonValues.Add(jsValue);
}
jsonValue = new JSONArray(jsonValues);
}
else if (thisType == typeof(System.Data.DataTable))
{
//数据表的格式
System.Data.DataTable dt = new System.Data.DataTable();
}
else
{
//其他的数据类型，尝试转换为JSONObject
jsonValue = ObjectToJSONObject(objValue);
}
return(jsonValue);
}
public JSONValue(JSONArray array)
{
Type = JSONValueType.Array;
Array = array;
}
public static JSONNode Deserialize(System.IO.BinaryReader aReader)
{
JSONBinaryTag type = (JSONBinaryTag)aReader.ReadByte();
switch (type)
{
case JSONBinaryTag.Array:
{
int count = aReader.ReadInt32();
JSONArray tmp = new JSONArray();
for (int i = 0; i < count; i++)
{
tmp.Add(Deserialize(aReader));
}
return(tmp);
}
case JSONBinaryTag.Class:
{
int count = aReader.ReadInt32();
JSONClass tmp = new JSONClass();
for (int i = 0; i < count; i++)
{
string key = aReader.ReadString();
var val = Deserialize(aReader);
tmp.Add(key, val);
}
return(tmp);
}
case JSONBinaryTag.Value:
{
return(new JSONData(aReader.ReadString()));
}
case JSONBinaryTag.IntValue:
{
return(new JSONData(aReader.ReadInt32()));
}
case JSONBinaryTag.DoubleValue:
{
return(new JSONData(aReader.ReadDouble()));
}
case JSONBinaryTag.BoolValue:
{
return(new JSONData(aReader.ReadBoolean()));
}
case JSONBinaryTag.FloatValue:
{
return(new JSONData(aReader.ReadSingle()));
}
default:
{
throw new Exception("Error deserializing JSON. Unknown tag: " + type);
}
}
}
