static void AddElement (JSONNode ctx, string token, string tokenName, bool tokenIsString)
{
if (tokenIsString) {
if (ctx is JSONArray)
ctx.Add (token);
else
ctx.Add (tokenName, token); // assume dictionary/object
} else {
JSONData number = Numberize (token);
if (ctx is JSONArray)
ctx.Add (number);
else
ctx.Add (tokenName, number);
}
}
public static JSONNode Parse(string aJSON)
{
Stack <JSONNode> stack = new Stack <JSONNode> ();
JSONNode ctx = null;
int i = 0;
string Token = "";
string TokenName = "";
bool QuoteMode = false;
bool TokenIsString = false;
while (i < aJSON.Length)
{
switch (aJSON [i])
{
case '{':
if (QuoteMode)
{
Token += aJSON [i];
break;
}
stack.Push(new JSONClass());
if (ctx != null)
{
TokenName = TokenName.Trim();
if (ctx is JSONArray)
{
ctx.Add(stack.Peek());
}
else if (TokenName != "")
{
ctx.Add(TokenName, stack.Peek());
}
}
TokenName = "";
Token = "";
ctx = stack.Peek();
break;
case '[':
if (QuoteMode)
{
Token += aJSON [i];
break;
}
stack.Push(new JSONArray());
if (ctx != null)
{
TokenName = TokenName.Trim();
if (ctx is JSONArray)
{
ctx.Add(stack.Peek());
}
else if (TokenName != "")
{
ctx.Add(TokenName, stack.Peek());
}
}
TokenName = "";
Token = "";
ctx = stack.Peek();
break;
case '}':
case ']':
if (QuoteMode)
{
Token += aJSON [i];
break;
}
if (stack.Count == 0)
{
throw new Exception("JSON Parse: Too many closing brackets");
}
stack.Pop();
if (Token != "")
{
TokenName = TokenName.Trim();
/*
* if (ctx is JSONArray)
* ctx.Add (Token);
* else if (TokenName != "")
* ctx.Add (TokenName, Token);
*/
AddElement(ctx, Token, TokenName, TokenIsString);
TokenIsString = false;
}
TokenName = "";
Token = "";
if (stack.Count > 0)
{
ctx = stack.Peek();
}
break;
case ':':
if (QuoteMode)
{
Token += aJSON [i];
break;
}
TokenName = Token;
Token = "";
TokenIsString = false;
break;
case '"':
QuoteMode ^= true;
TokenIsString = QuoteMode == true ? true : TokenIsString;
break;
case ',':
if (QuoteMode)
{
Token += aJSON [i];
break;
}
if (Token != "")
{
/*
* if (ctx is JSONArray) {
* ctx.Add (Token);
* } else if (TokenName != "") {
* ctx.Add (TokenName, Token);
* }
*/
AddElement(ctx, Token, TokenName, TokenIsString);
TokenIsString = false;
}
TokenName = "";
Token = "";
TokenIsString = false;
break;
case '\r':
case '\n':
break;
case ' ':
case '\t':
if (QuoteMode)
{
Token += aJSON [i];
}
break;
case '\\':
++i;
if (QuoteMode)
{
char C = aJSON [i];
switch (C)
{
case 't':
Token += '\t';
break;
case 'r':
Token += '\r';
break;
case 'n':
Token += '\n';
break;
case 'b':
Token += '\b';
break;
case 'f':
Token += '\f';
break;
case 'u':
{
string s = aJSON.Substring(i + 1, 4);
Token += (char)int.Parse(
s,
System.Globalization.NumberStyles.AllowHexSpecifier);
i += 4;
break;
}
default:
Token += C;
break;
}
}
break;
default:
Token += aJSON [i];
break;
}
++i;
}
if (QuoteMode)
{
throw new Exception("JSON Parse: Quotation marks seems to be messed up.");
}
return(ctx);
}
