public static Element Parse(string input)
{
if (input.Contains(" "))
{
throw new ArgumentException(string.Format("Spaces are not allowed in individual elements. Tried to parse {0}.", input), "input");
}
Element result;
if (input.IsDecimalNumber())
{
result = new Element(input, ElementType.DecimalNumber, Operator.NotAnOperator);
}
else if (input.IsHexadecimalNumber())
{
result = new Element(input, ElementType.HexadecimalNumber, Operator.NotAnOperator);
}
else if (input.IsBinaryNumber())
{
result = new Element(input, ElementType.BinaryNumber, Operator.NotAnOperator);
}
else if (input.IsOctalNumber())
{
result = new Element(input, ElementType.OctalNumber, Operator.NotAnOperator);
}
else if (input.IsUnaryOperator())
{
throw new ArgumentException("Cannot parse a single unary operator.", "input");
}
else if (input.IsBinaryOperator())
{
result = new Element(input, ElementType.BinaryOperator, input.GetBinaryOperator());
}
else if (input.IsDecimalNumberWithUnaryOperators())
{
throw new ArgumentException("Cannot parse a number with unary operators.", "input");
}
throw new ArgumentException(string.Format("Could not recognize the input to parse. Input: \"{0}\"", input), "input");
}