/********************************************************************
*** FUNCTION : Process Function ***
*** DESCRIPTION : This function processes a hexidecimal literal ***
*** and adds it to either the literal errors list ***
*** or to the list of valid literals. ***
*** INPUT ARGS : LiteralsLinkedList literalsLinkedList, ***
*** string literalToBeValidated, string literal, ***
*** int address, List<string> processedLiterals ***
*** OUTPUT ARGS : This function has zero output arguments. ***
*** IN/OUT ARGS : This function has zero input/output arguments. ***
*** RETURN : This function returns nothing. ***
*********************************************************************/
public void Process(LiteralsLinkedList literalsLinkedList, string literalToBeValidated, string literal, int address, List <string> processedLiterals)
{
string final = "";
Regex rg = new Regex("[0-9A-Fa-f]+");
if (rg.IsMatch(literalToBeValidated))
{
if (literalToBeValidated[0] <= '7' && literalToBeValidated[0] >= '0')
{
if (literalToBeValidated.Length % 2 != 0)
{
final = "0";
foreach (char ch in literalToBeValidated)
{
final += ch;
}
}
else
{
final = literalToBeValidated;
}
}
else if (literalToBeValidated[0] == '8' || literalToBeValidated[0] == '9' || literalToBeValidated[0] >= 'A' || literalToBeValidated[0] <= 'B' || literalToBeValidated[0] == 'C' || literalToBeValidated[0] == 'D' || literalToBeValidated[0] == 'E' || literalToBeValidated[0] == 'F')
{
if (literalToBeValidated.Length % 2 != 0)
{
final = "F";
foreach (char ch in literalToBeValidated)
{
final += ch;
}
}
else
{
final = literalToBeValidated;
}
}
else
{
literalsLinkedList.LiteralErrors.Add("Error: " + literal + " may only contain hexadecimal characters (0 - F)");
}
if (!processedLiterals.Contains(literalToBeValidated))
{
processedLiterals.Add(literalToBeValidated);
LiteralNode node = new LiteralNode(literal, final, (final.Count() / 2), address);
literalsLinkedList.Add(node);
address++;
}
else
{
literalsLinkedList.LiteralErrors.Add("Error: Literal " + literal + " is a duplicate literal");
}
}
else
{
literalsLinkedList.LiteralErrors.Add("Error: " + literal + " may only contain hexadecimal characters (0 - F)");
}
}
/********************************************************************
*** FUNCTION : Process Function ***
*** DESCRIPTION : This function processes a character literal ***
*** and adds it to either the literal errors list ***
*** or to the list of valid literals. ***
*** INPUT ARGS : LiteralsLinkedList literalsLinkedList, ***
*** string literalToBeValidated, string literal, ***
*** int address, List<string> processedLiterals ***
*** OUTPUT ARGS : This function has zero output arguments. ***
*** IN/OUT ARGS : This function has zero input/output arguments. ***
*** RETURN : This function returns nothing. ***
*********************************************************************/
public void Process(LiteralsLinkedList literalsLinkedList, string literalToBeValidated, string literal, int address, List <string> processedLiterals)
{
string final = "";
foreach (char character in literalToBeValidated)
{
int value = Convert.ToInt32(character);
string hexOutput = String.Format("{0:X}", value);
final += hexOutput;
}
if (!processedLiterals.Contains(literalToBeValidated))
{
processedLiterals.Add(literalToBeValidated);
LiteralNode node = new LiteralNode(literal, final, literalToBeValidated.Count(), address);
literalsLinkedList.Add(node);
address++;
}
}
/********************************************************************
*** FUNCTION : Add Function ***
*** DESCRIPTION : This function adds a node to the literals ***
*** linked list. ***
*** INPUT ARGS : LiteralNode node ***
*** OUTPUT ARGS : This function has zero output arguments. ***
*** IN/OUT ARGS : This function has zero input/output arguments. ***
*** RETURN : This function returns nothing. ***
*********************************************************************/
public void Add(LiteralNode node)
{
literals.Add(node);
}