JSONToken ParseNumberToken(int firstChar){
int index = stringIndex-1;
// First just get the full string
while (character != ASCIICodes.CHR_SPACE && character != ASCIICodes.CHR_COMMA &&
character != ASCIICodes.CHR_CLOSE_CURLY && character != ASCIICodes.CHR_CLOSE_SQUARE && character != ASCIICodes.CHR_NUL){
NextChar();
}
if (character == ASCIICodes.CHR_NUL){
ParseFailure("Unterminated Number");
return JSONToken.CreateToken(JSONToken.TOKEN_UNKNOWN,null);
}
string numberString = jsonString.Slice(index,stringIndex-1);
if (numberString.IndexOf(".") != -1 || numberString.IndexOf("e") != -1 || numberString.IndexOf("E") != -1){
return JSONToken.CreateToken(JSONToken.TOKEN_UNPARSED_FLOAT,numberString);
} else {
int value = ParseInteger(numberString);
return JSONToken.CreateToken(JSONToken.TOKEN_INTEGER,value);
}
}
public JSONToken NextToken(){
JSONToken retToken=null;
SkipIgnored();
switch (character){
case ASCIICodes.CHR_OPEN_CURLY:
retToken = JSONToken.CreateToken(JSONToken.TOKEN_OPEN_CURLY,"{");
break;
case ASCIICodes.CHR_CLOSE_CURLY:
retToken = JSONToken.CreateToken(JSONToken.TOKEN_CLOSE_CURLY,"}");
break;
case ASCIICodes.CHR_OPEN_SQUARE:
retToken = JSONToken.CreateToken(JSONToken.TOKEN_OPEN_SQUARE,"[");
break;
case ASCIICodes.CHR_CLOSE_SQUARE:
retToken = JSONToken.CreateToken(JSONToken.TOKEN_CLOSE_SQUARE,"]");
break;
case ASCIICodes.CHR_COMMA:
retToken = JSONToken.CreateToken(JSONToken.TOKEN_COMMA,",");
break;
case ASCIICodes.CHR_COLON:
retToken = JSONToken.CreateToken(JSONToken.TOKEN_COLON,":");
break;
case ASCIICodes.CHR_LOWER_T:
if (String.Compare(jsonString.Slice(stringIndex,stringIndex+3), "rue") == 0){
stringIndex += 3;
retToken = JSONToken.CreateToken(JSONToken.TOKEN_TRUE,"true");
}
break;
case ASCIICodes.CHR_LOWER_F:
if (String.Compare(jsonString.Slice(stringIndex,stringIndex+4), "alse") == 0){
stringIndex += 4;
retToken = JSONToken.CreateToken(JSONToken.TOKEN_FALSE,"false");
}
break;
case ASCIICodes.CHR_LOWER_N:
if (String.Compare(jsonString.Slice(stringIndex,stringIndex+3),"ull") == 0){
stringIndex += 3;
retToken = JSONToken.CreateToken(JSONToken.TOKEN_NULL,"null");
}
break;
case ASCIICodes.CHR_DOUBLE_QUOTE:
int startIndex = stringIndex;
int endIndex = jsonString.IndexOf("\"",stringIndex);
while (endIndex != -1 && jsonString[endIndex-1] == ASCIICodes.CHR_BACKSLASH){
endIndex = jsonString.IndexOf("\"",endIndex+1);
}
if (endIndex == -1){
ParseFailure("Unterminated string");
}
retToken = JSONToken.CreateToken(JSONToken.TOKEN_STRING,jsonString.Slice(startIndex,endIndex));
stringIndex = endIndex+1;
break;
default:
// Is it a Number?
if (character == ASCIICodes.CHR_HYPHEN || IsDigit(character)){
return ParseNumberToken(character); // We return here because ParseNumberToken moves the token pointer forward
} else if (character == ASCIICodes.CHR_NUL) {
retToken = null; // End of string so just leave//
}
break;
}
if (retToken == null){
ParseFailure("Unknown token, character: " + character.ToString());
retToken = JSONToken.CreateToken(JSONToken.TOKEN_UNKNOWN,null);
} else {
NextChar();
}
return retToken;
}