internal static new bool ReadFromString(StringScanner scanner, out DataStringItem item)
{
using (var token = scanner.SaveIndex())
{
if (scanner.CurrentChar == '0')
{
scanner.Increment();
bool literalIsBinary = scanner.CurrentChar == 'b',
literalIsHexadecimal = scanner.CurrentChar == 'x';
if (literalIsBinary || literalIsHexadecimal)
{
scanner.Increment();
}
using (var repStrToken = scanner.SaveIndex())
{
while (literalIsBinary && GlobalConsts.BINARY_CHARSET.Contains(scanner.CurrentChar) ||
literalIsHexadecimal && GlobalConsts.HEXADECIMAL_CHARSET.Contains(scanner.CurrentChar) ||
!(literalIsHexadecimal || literalIsHexadecimal) && GlobalConsts.OCTAL_CHARSET.Contains(scanner.CurrentChar))
{
scanner.Increment();
}
string repStr = scanner.GetString(repStrToken);
if (repStr.Length > 0)
{
if (literalIsBinary)
{
item = new DataStringLiteralBinary(BinaryConversion.FromRepresentation(repStr, 2),
DataStringLiteralBinaryRepresentation.Binary);
}
else if (literalIsHexadecimal)
{
item = new DataStringLiteralBinary(BinaryConversion.FromRepresentation(repStr, 16),
DataStringLiteralBinaryRepresentation.Hexadecimal);
}
else
{
item = new DataStringLiteralBinary(BinaryConversion.FromRepresentation(repStr, 8),
DataStringLiteralBinaryRepresentation.Octal);
}
return(true);
}
}
}
scanner.RestoreIndex(token);
item = null;
return(false);
}
}
internal static new bool ReadFromString(StringScanner scanner, out DataStringItem item)
{
return(DataStringLiteralString.ReadFromString(scanner, out item) ||
DataStringLiteralBinary.ReadFromString(scanner, out item) ||
DataStringLiteralNumber.ReadFromString(scanner, out item));
}