private static int DetermineIndex(PrefixByte input)
{
if (input == PrefixByte.ADDROVR) //
{ //
return(3); // ADDROVR and SIZEOVR are completely independent of any other prefix
} //
else if (input == PrefixByte.SIZEOVR) //
{
return(2);
}
else if (input == PrefixByte.REPZ || input == PrefixByte.REPNZ || input == PrefixByte.LOCK) // Only one of REPZ,REPNZ and LOCK can be present at one time
{
return(1);
}
else // Anything else covers segment override prefixes. E.g if there is a code segment override byte, then after that a data segment override byte, obviously these two wont work together.
{
return(0);
}
}
public static void Clear() => Array.Clear(Prefixes, 0, 4); // Arguably faster than creating a new instance. The old one would have to be destructed at some point. public static bool Contains(PrefixByte input) => Prefixes[DetermineIndex(input)] == input;
public static void Add(PrefixByte input)
{
Prefixes[DetermineIndex(input)] = input; // Take the most recent definition for that prefix index, be it the first or hundreth.
}