/// <summary>
/// There are various combinations which we don't want to bother executing.
/// These include:
/// Certain pairs we ignore - either pointless (e.g "po"), redundant (e.g. "cp" is better expressed as '2t'), or just nasty (e.g "FF").
/// Certain combinations countain pointless leading chars which have no useful effect on the final result (e.g. "ppp28:tnm" is basically the same as "8:2tnm")
/// Ends in a number - little more than a guess
/// </summary>
public static bool IsGoodGusl(string gusl)
{
return(!(gusl.Any(c => !GusLAtoms.Contains(c)) ||
(gusl.Length > 1 && '1' <= gusl.Last() && '@' >= gusl.Last()) ||
ContainsBadPairs(gusl) ||
ContainsUnimportandLeadingOps(gusl)));
}
/// <summary>
/// Process the specified GusL atom.
/// TODO - Check for overflows and handle internally
/// e.g. "e4nmd" on "99 96 91 84 75"
/// </summary>
GusStatus Process(char op)
{
if (!GusLAtoms.Contains(op))
{
LastError = string.Format("Only valid GusL atoms are allowed: {0}.", string.Join(", ", GusLAtoms));
return(GusStatus.Error);
}
if (_verbose)
{
Console.WriteLine("Evaluating: {0}", op);
}
if (op >= '1' && op <= '@')
{
_stack.Push(op - '1' + 1);
return(GusStatus.OK);
}
return((GusStatus)GetMethodInfo(op).Invoke(this, null));
}