public bool hasCorrectInput(string input)
{
// get initial state
var current = InitialState;
// loop to get next state
foreach (char c in input)
{
if (current == null)
{
return(false);
}
if (!Alphabets.Contains(c))
{
throw new ArgumentException("Character is not in alphabet list!");
}
else
{
current = Table.GetNextStates(current, c);
}
}
// check if the current state is final
return(isFinalState(current));
}
public bool AddAlphabet(char alphabet)
{
if (!Alphabets.Contains(alphabet))
{
Alphabets.Add(alphabet);
return(true);
}
return(false);
}
public bool RemoveAlphabet(char alphabet)
{
if (Alphabets.Contains(alphabet))
{
RemoveInstructionsInvolvingAlphabet(alphabet);
Alphabets.Remove(alphabet);
return(true);
}
return(false);
}
public bool RemoveInstruction(Instruction instruction)
{
if (States.Contains(instruction.CurrentState) && States.Contains(instruction.NextState) && Alphabets.Contains(instruction.Input))
{
if (Instructions.Contains(instruction))
{
Instructions.Remove(instruction);
return(true);
}
return(false);
}
return(false);
}
public override bool AddInstruction(Instruction instruction)
{
if (States.Contains(instruction.CurrentState) && States.Contains(instruction.NextState) && Alphabets.Contains(instruction.Input))
{
if (!Instructions.Contains(instruction))
{
Instructions.Add(instruction);
return(true);
}
return(false);
}
return(false);
}