internal static object StringToNumber(string input)
{
if (string.IsNullOrEmpty(input))
{
return((object)null);
}
input = input.Trim();
if (string.IsNullOrEmpty(input))
{
return((object)null);
}
string str1 = "";
if (input[0] == '+' || SpecialCharacters.IsDash(input[0]))
{
str1 = input[0].ToString();
input = input.Substring(1);
}
string str2 = NumberTokenReader.ScanForNumber(input, 0);
if (str2 == null)
{
return((object)null);
}
if (str2.Length < input.Length)
{
throw InterpreterError.NewInterpreterException((object)input, typeof(RuntimeException), (Token)null, "BadNumericConstant", (object)input);
}
return(NumberTokenReader.ConvertToNumber(str1 + str2, (Tokenizer)null));
}
private string Match(string input, int offset, out object tokenData)
{
tokenData = (object)null;
int startIndex = offset;
if (this.Tokenizer.AllowSignedNumber && offset < input.Length && (input[offset] == '+' || SpecialCharacters.IsDash(input[offset])))
{
++offset;
}
string str1 = NumberTokenReader.ScanForNumber(input, offset);
if (string.IsNullOrEmpty(str1))
{
return((string)null);
}
offset += str1.Length;
if (offset < input.Length)
{
if (this.Tokenizer.Mode == ParseMode.Command)
{
if ("{}();,|&\r\n\t ".IndexOf(input[offset]) == -1)
{
return((string)null);
}
}
else if (char.IsLetterOrDigit(input[offset]))
{
if (this.Tokenizer.Mode == ParseMode.Expression)
{
this.Tokenizer.Parser.ReportException((object)str1, typeof(ParseException), this.Tokenizer.PositionToken(offset), "BadNumericConstant", (object)str1);
}
return((string)null);
}
}
try
{
string str2 = input.Substring(startIndex, offset - startIndex);
tokenData = NumberTokenReader.ConvertToNumber(str2, this.Tokenizer);
return(str2);
}
catch (RuntimeException ex)
{
if (this.Tokenizer.Mode != ParseMode.Expression)
{
return((string)null);
}
if (ex.ErrorRecord != null)
{
ex.ErrorRecord.SetInvocationInfo(new InvocationInfo((CommandInfo)null, this.Tokenizer.PositionToken(offset)));
}
throw;
}
}