/// <summary>
/// Put a value into this Json array
/// </summary>
/// <param name="o">The value to add to this Json array</param>
/// <returns>This Json array</returns>
public JSONArray Put(int index, JSONObject o)
{
items.Insert(index, o);
return(this);
}
/// <summary>
/// Private method for parsing a Json string into a Json object
/// </summary>
/// <param name="json">The Json string to parse</param>
/// <returns>A deserialized Json object</returns>
private JSONObject ParseJSONObject(string json)
{
JSONObject jo = new JSONObject();
int bracketCounter = 0;
int curlyBracketCounter = 0;
bool hasEnteredObject = false;
bool inLiteral = false;
bool inNestedJsonObject = false;
bool inNestedArray = false;
bool expectingName = true;
string currentFieldName = null;
bool buildingPrimitiveValue = false;
bool escapingCharacter = false;
StringBuilder buffer = new StringBuilder();
//Loop through every character in the Json string
for (int i = 0; i < json.Length; i++)
{
char c = json[i];
if (inLiteral && !(!escapingCharacter && c == '"'))
{
//Handle escape characters in string literals
if (inLiteral && c == '\\')
{
if (escapingCharacter)
{
escapingCharacter = false;
buffer.Append('\\');
}
else
{
escapingCharacter = true;
}
}
else if (c != '"')
{
//Look for the next character in an escape character if we are escaping
if (escapingCharacter)
{
if (c == 'b')
{
buffer.Append('\b');
}
else if (c == 'f')
{
buffer.Append('\f');
}
else if (c == 'n')
{
buffer.Append('\n');
}
else if (c == 'r')
{
buffer.Append('\r');
}
else if (c == 't')
{
buffer.Append('\t');
}
else if (c == '"')
{
buffer.Append('\"');
}
else
{
//We were escaping a character but this isn't a valid one
throw new MalformedJsonException();
}
escapingCharacter = false;
}
else
{
//Add to the buffer if inside a literal
buffer.Append(c);
}
}
else if (c == '"' && escapingCharacter && inLiteral)
{
buffer.Append('"'); escapingCharacter = false;
}
}
else if (inNestedJsonObject && c != '}' || inNestedArray && c != ']')
{
//Add to the buffer if inside a nested Json object
buffer.Append(c);
}
else if (char.IsWhiteSpace(c))
{ //Whitespace characters
if (buildingPrimitiveValue && !inNestedJsonObject && !inNestedArray)
{
//This would mean we didn't enclose a literal and are looking for a value
//The buffer should be a value
jo.Put(currentFieldName, ParseValue(buffer.ToString()));
buffer.Length = 0;
expectingName = true;
buildingPrimitiveValue = false;
}
}
else if (c == '{')
{
bracketCounter++;
if (bracketCounter == 1 && hasEnteredObject)
{
throw new MalformedJsonException();
}
hasEnteredObject = true;
if (bracketCounter > 1)
{
//This should only happen when expecting a value
if (expectingName)
{
throw new MalformedJsonException();
}
inNestedJsonObject = true;
buffer.Append(c);
}
}
else if (c == '}')
{
bracketCounter--;
if (bracketCounter < 0)
{
throw new MalformedJsonException();
}
else if (bracketCounter == 1)
{
if (inNestedJsonObject)
{
//This should only happen when expecting a value
if (expectingName)
{
throw new MalformedJsonException();
}
inNestedJsonObject = false;
buffer.Append(c);
//Parse the inner object and add it
jo.Put(currentFieldName, ParseJSONObject(buffer.ToString()));
buffer.Length = 0;
//We need a name now
expectingName = true;
}
}
else if (bracketCounter == 0)
{
if (!expectingName && buildingPrimitiveValue)
{
//We weren't in an object and a bracket appeared
//The object should be ending in this case and this is the final value
jo.Put(currentFieldName, ParseValue(buffer.ToString()));
buffer.Length = 0;
expectingName = true;
buildingPrimitiveValue = false;
}
}
}
else if (c == '[')
{
if (!hasEnteredObject)
{
throw new MalformedJsonException();
}
curlyBracketCounter++;
if (curlyBracketCounter > 0)
{
inNestedArray = true;
//This should only happen when expecting a value
if (expectingName)
{
throw new MalformedJsonException();
}
inNestedArray = true;
buffer.Append(c);
}
}
else if (c == ']')
{
curlyBracketCounter--;
if (curlyBracketCounter < 0)
{
throw new MalformedJsonException();
}
else if (curlyBracketCounter == 0)
{
//This should only happen when expecting a value
if (expectingName)
{
throw new MalformedJsonException();
}
inNestedArray = false;
buffer.Append(c);
//Parse the inner object and add it
jo.Put(currentFieldName, new JSONArray(buffer.ToString()));
buffer.Length = 0;
//We need a name now
expectingName = true;
}
}
else if (c == '"')
{ //Here we either just started or ended a literal
inLiteral = !inLiteral;
//If we're looking for a name and we just exited a literal
if (!inLiteral) //If we just ended a literal...
{
if (expectingName)
{ //We were looking for a name, store it
//Store the field name
currentFieldName = buffer.ToString(); buffer.Length = 0;
//Expecting value now
expectingName = !expectingName;
}
else
{ //We were expecting a value so we must have a string literal
jo.Put(currentFieldName, buffer.ToString()); buffer.Length = 0;
//Next up is a name
expectingName = true;
}
}
}
else if (c == ':')
{
//We should have already flipped the switch in the quote logic
//So we could probably just ignore this
if (expectingName)
{
throw new MalformedJsonException();
}
}
else if (c == ',')
{
if (!expectingName)
{
//This would mean we didn't enclose a literal and are looking for a value
//The buffer should be a value
jo.Put(currentFieldName, ParseValue(buffer.ToString()));
buffer.Length = 0;
expectingName = true;
buildingPrimitiveValue = false;
}
}
else
{
//Only accept other characters if in an object and looking for a value
if (hasEnteredObject && !expectingName)
{
buffer.Append(c);
//We are creating a primitive type
buildingPrimitiveValue = true;
}
else
{
throw new MalformedJsonException();
}
}
}
//parse complete
return(jo);
}
/// <summary>
/// Put a value into this Json array
/// </summary>
/// <param name="o">The value to add to this Json array</param>
/// <returns>This Json array</returns>
public JSONArray Put(JSONObject o)
{
items.Add(o);
return(this);
}
/// <summary>
/// Maps name to value, clobbering any existing name/value mapping with the same name
/// </summary>
/// <param name="name">The field name for the mapping</param>
/// <param name="value">The value to be mapped to the field name</param>
/// <returns>This json object with the mapping added</returns>
public JSONObject Put(string name, JSONObject value)
{
items[name] = value;
return(this);
}
