public static object process(object[] args)
{
FiniteStateMachineVariables variables = new FiniteStateMachineVariables(args);
IState state = new StartState();
List<IState> statesStack = new List<IState>();
while (true)
{
statesStack.Add(state);
if (state is INormalState)
{
state = ((INormalState)state).execute(variables);
}
else if (state is IFinishState)
{
return ((IFinishState)state).getResult(variables);
}
else if (state is IErrorState)
{
throw new FiniteStateMachineException(((IErrorState)state).getErrorMessage(variables));
}
else
{
throw new Exception(string.Format("Unknown kind of state '{0}'", state.GetType().Name));
}
}
}
public object getResult(FiniteStateMachineVariables variables)
{
if (variables.result is int && ((int)variables.result) % 2 == 0)
{
return string.Format("{0} :-)", variables.result);
}
else
{
return variables.result;
}
}
public string getErrorMessage(FiniteStateMachineVariables variables)
{
return "Shit happened - " + variables.defaultErrorMessage + " - be happy!";
}
public IState execute(FiniteStateMachineVariables variables)
{
variables.result = new Random().Next();
return new FinishStateDefault();
}
public IState execute(FiniteStateMachineVariables variables)
{
variables.defaultErrorMessage = "Error message " + new Random().Next();
return new BlaBlaError();
}
public IState execute(FiniteStateMachineVariables variables)
{
if (new Random().NextDouble() > 0.5)
{
return new State2();
}
else
{
return new State3();
}
}
