private void ParseNumber()
{
ShiftBufferIfNeeded();
char firstChar = _chars[_charPos];
int initialPosition = _charPos;
ReadNumberIntoBuffer();
// set state to PostValue now so that if there is an error parsing the number then the reader can continue
SetPostValueState(true);
_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();
try
{
int integer = number.StartsWith("0x", StringComparison.OrdinalIgnoreCase)
? Convert.ToInt32(number, 16)
: Convert.ToInt32(number, 8);
numberValue = integer;
}
catch (Exception ex)
{
throw JsonReaderException.Create(this, "Input string '{0}' is not a valid integer.".FormatWith(CultureInfo.InvariantCulture, number), ex);
}
}
else
{
int value;
ParseResult parseResult = ConvertUtils.Int32TryParse(_stringReference.Chars, _stringReference.StartIndex, _stringReference.Length, out value);
if (parseResult == ParseResult.Success)
numberValue = value;
else if (parseResult == ParseResult.Overflow)
throw JsonReaderException.Create(this, "JSON integer {0} is too large or small for an Int32.".FormatWith(CultureInfo.InvariantCulture, _stringReference.ToString()));
else
throw JsonReaderException.Create(this, "Input string '{0}' is not a valid integer.".FormatWith(CultureInfo.InvariantCulture, _stringReference.ToString()));
}
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();
try
{
// 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);
}
catch (Exception ex)
{
throw JsonReaderException.Create(this, "Input string '{0}' is not a valid decimal.".FormatWith(CultureInfo.InvariantCulture, number), ex);
}
}
else
{
string number = _stringReference.ToString();
decimal value;
if (decimal.TryParse(number, NumberStyles.Number | NumberStyles.AllowExponent, CultureInfo.InvariantCulture, out value))
numberValue = value;
else
throw JsonReaderException.Create(this, "Input string '{0}' is not a valid decimal.".FormatWith(CultureInfo.InvariantCulture, _stringReference.ToString()));
}
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();
try
{
numberValue = number.StartsWith("0x", StringComparison.OrdinalIgnoreCase)
? Convert.ToInt64(number, 16)
: Convert.ToInt64(number, 8);
}
catch (Exception ex)
{
throw JsonReaderException.Create(this, "Input string '{0}' is not a valid number.".FormatWith(CultureInfo.InvariantCulture, number), ex);
}
numberType = JsonToken.Integer;
}
else
{
long value;
ParseResult parseResult = ConvertUtils.Int64TryParse(_stringReference.Chars, _stringReference.StartIndex, _stringReference.Length, out value);
if (parseResult == ParseResult.Success)
{
numberValue = value;
numberType = JsonToken.Integer;
}
else if (parseResult == ParseResult.Overflow)
{
#if !(NET20 || NET35 || PORTABLE40 || PORTABLE)
string number = _stringReference.ToString();
if (number.Length > MaximumJavascriptIntegerCharacterLength)
throw JsonReaderException.Create(this, "JSON integer {0} is too large to parse.".FormatWith(CultureInfo.InvariantCulture, _stringReference.ToString()));
numberValue = BigIntegerParse(number, CultureInfo.InvariantCulture);
numberType = JsonToken.Integer;
#else
throw JsonReaderException.Create(this, "JSON integer {0} is too large or small for an Int64.".FormatWith(CultureInfo.InvariantCulture, _stringReference.ToString()));
#endif
}
else
{
string number = _stringReference.ToString();
if (_floatParseHandling == FloatParseHandling.Decimal)
{
decimal d;
if (decimal.TryParse(number, NumberStyles.Number | NumberStyles.AllowExponent, CultureInfo.InvariantCulture, out d))
numberValue = d;
else
throw JsonReaderException.Create(this, "Input string '{0}' is not a valid decimal.".FormatWith(CultureInfo.InvariantCulture, number));
}
else
{
double d;
if (double.TryParse(number, NumberStyles.Float | NumberStyles.AllowThousands, CultureInfo.InvariantCulture, out d))
numberValue = d;
else
throw JsonReaderException.Create(this, "Input string '{0}' is not a valid number.".FormatWith(CultureInfo.InvariantCulture, number));
}
numberType = JsonToken.Float;
}
}
}
ClearRecentString();
// index has already been updated
SetToken(numberType, numberValue, false);
}
private void ParseConstructor()
{
if (MatchValueWithTrailingSeparator("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 JsonReaderException.Create(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 JsonReaderException.Create(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 JsonReaderException.Create(this, "Unexpected character while parsing constructor: {0}.".FormatWith(CultureInfo.InvariantCulture, _chars[_charPos]));
_charPos++;
ClearRecentString();
SetToken(JsonToken.StartConstructor, constructorName);
}
else
{
throw JsonReaderException.Create(this, "Unexpected content while parsing JSON.");
}
}