private void ParseNumber()
{
ShiftBufferIfNeeded();
char firstChar = _chars[_charPos];
int initialPosition = _charPos;
ReadNumberIntoBuffer();
_stringReference = new StringReference(_chars, initialPosition, _charPos - initialPosition);
object numberValue;
JsonToken numberType;
bool singleDigit = (char.IsDigit(firstChar) && _stringReference.Length == 1);
bool nonBase10 = (firstChar == '0' && _stringReference.Length > 1
&& _stringReference.Chars[_stringReference.StartIndex + 1] != '.'
&& _stringReference.Chars[_stringReference.StartIndex + 1] != 'e'
&& _stringReference.Chars[_stringReference.StartIndex + 1] != 'E');
if (_readType == ReadType.ReadAsInt32)
{
if (singleDigit)
{
// digit char values start at 48
numberValue = firstChar - 48;
}
else if (nonBase10)
{
string number = _stringReference.ToString();
// decimal.Parse doesn't support parsing hexadecimal values
int integer = number.StartsWith("0x", StringComparison.OrdinalIgnoreCase)
? Convert.ToInt32(number, 16)
: Convert.ToInt32(number, 8);
numberValue = integer;
}
else
{
string number = _stringReference.ToString();
numberValue = Convert.ToInt32(number, CultureInfo.InvariantCulture);
}
numberType = JsonToken.Integer;
}
else if (_readType == ReadType.ReadAsDecimal)
{
if (singleDigit)
{
// digit char values start at 48
numberValue = (decimal)firstChar - 48;
}
else if (nonBase10)
{
string number = _stringReference.ToString();
// decimal.Parse doesn't support parsing hexadecimal values
long integer = number.StartsWith("0x", StringComparison.OrdinalIgnoreCase)
? Convert.ToInt64(number, 16)
: Convert.ToInt64(number, 8);
numberValue = Convert.ToDecimal(integer);
}
else
{
string number = _stringReference.ToString();
numberValue = decimal.Parse(number, NumberStyles.Number | NumberStyles.AllowExponent, CultureInfo.InvariantCulture);
}
numberType = JsonToken.Float;
}
else
{
if (singleDigit)
{
// digit char values start at 48
numberValue = (long)firstChar - 48;
numberType = JsonToken.Integer;
}
else if (nonBase10)
{
string number = _stringReference.ToString();
numberValue = number.StartsWith("0x", StringComparison.OrdinalIgnoreCase)
? Convert.ToInt64(number, 16)
: Convert.ToInt64(number, 8);
numberType = JsonToken.Integer;
}
else
{
string number = _stringReference.ToString();
// it's faster to do 3 indexof with single characters than an indexofany
if (number.IndexOf('.') != -1 || number.IndexOf('E') != -1 || number.IndexOf('e') != -1)
{
numberValue = Convert.ToDouble(number, CultureInfo.InvariantCulture);
numberType = JsonToken.Float;
}
else
{
try
{
numberValue = Convert.ToInt64(number, CultureInfo.InvariantCulture);
}
catch (OverflowException ex)
{
throw new JsonReaderException("JSON integer {0} is too large or small for an Int64.".FormatWith(CultureInfo.InvariantCulture, number), ex);
}
numberType = JsonToken.Integer;
}
}
}
ClearRecentString();
SetToken(numberType, numberValue);
}
private void ParseConstructor()
{
if (MatchValueWithTrailingSeperator("new"))
{
EatWhitespace(false);
int initialPosition = _charPos;
int endPosition;
while (true)
{
char currentChar = _chars[_charPos];
if (currentChar == '\0')
{
if (_charsUsed == _charPos)
{
if (ReadData(true) == 0)
throw CreateReaderException(this, "Unexpected end while parsing constructor.");
}
else
{
endPosition = _charPos;
_charPos++;
break;
}
}
else if (char.IsLetterOrDigit(currentChar))
{
_charPos++;
}
else if (currentChar == StringUtils.CarriageReturn)
{
endPosition = _charPos;
ProcessCarriageReturn(true);
break;
}
else if (currentChar == StringUtils.LineFeed)
{
endPosition = _charPos;
ProcessLineFeed();
break;
}
else if (char.IsWhiteSpace(currentChar))
{
endPosition = _charPos;
_charPos++;
break;
}
else if (currentChar == '(')
{
endPosition = _charPos;
break;
}
else
{
throw CreateReaderException(this, "Unexpected character while parsing constructor: {0}.".FormatWith(CultureInfo.InvariantCulture, currentChar));
}
}
_stringReference = new StringReference(_chars, initialPosition, endPosition - initialPosition);
string constructorName = _stringReference.ToString();
EatWhitespace(false);
if (_chars[_charPos] != '(')
throw CreateReaderException(this, "Unexpected character while parsing constructor: {0}.".FormatWith(CultureInfo.InvariantCulture, _chars[_charPos]));
_charPos++;
ClearRecentString();
SetToken(JsonToken.StartConstructor, constructorName);
}
}
