public PlainStateMachine(IEqualityComparer <TState> stateComparer, IEqualityComparer <TTrigger> triggerComparer)
{
if (stateComparer == null)
{
throw new ArgumentNullException(nameof(stateComparer));
}
if (triggerComparer == null)
{
throw new ArgumentNullException(nameof(triggerComparer));
}
_stateComparer = new StateEqualityComparer(stateComparer);
_triggerComparer = new TriggerEqualityComparer(triggerComparer);
_transitionEqualityComparer = new TransitionEqualityComparer(_stateComparer, _triggerComparer);
_states = new Dictionary <TState, IState>(_stateComparer);
_transitions = new HashSet <Transition <TState, TTrigger> >(_transitionEqualityComparer);
_guardConditions = new Dictionary <Transition <TState, TTrigger>, List <IGuardCondition> >(_transitionEqualityComparer);
_stateEventHandlers = new Dictionary <TState, HashSet <IStateEventHandler> >(_stateComparer);
_transitionCommandQueue = new Queue <TransitionCommand>();
}
public PlainStateMachine(IEqualityComparer <TState> stateComparer, IEqualityComparer <TTrigger> triggerComparer)
{
if (stateComparer == null)
{
throw new ArgumentNullException(nameof(stateComparer));
}
if (triggerComparer == null)
{
throw new ArgumentNullException(nameof(triggerComparer));
}
_stateComparer = new StateEqualityComparer(stateComparer);
_triggerComparer = new TriggerEqualityComparer(triggerComparer);
_transitionComparer = new TransitionEqualityComparer <TState, TTrigger>(_stateComparer, _triggerComparer);
_states = new PlainStateCollection <TState, TTrigger>(this, _stateComparer);
_transitionValidator = new PlainTransitionValidator <TState, TTrigger>(this, _transitionComparer);
_transitions = new PlainTransitionCollection <TState, TTrigger>(this, _stateComparer, _transitionComparer);
_stateBehaviourScheduler = new PlainStateBehaviourScheduler <TState, TTrigger>(this, _states, _transitions, _transitionValidator, _stateComparer, _triggerComparer);
_eventHandlers = new PlainStateEventHandlerCollection <TState, TTrigger>(this, _stateComparer);
_eventDispatcher = new PlainEventDispatcher <TState, TTrigger>(_eventHandlers, _stateBehaviourScheduler);
}
private HashSet<State> GetLiveStates(HashSet<State> states)
{
var dictionary = states.ToDictionary(s => s, s => new HashSet<State>());
foreach (State s in states)
{
foreach (Transition t in s.Transitions)
{
// TODO: Java code does not check for null states.
if (t.To == null)
{
continue;
}
dictionary[t.To].Add(s);
}
}
var comparer = new StateEqualityComparer();
var live = new HashSet<State>(this.GetAcceptStates(), comparer);
var worklist = new LinkedList<State>(live);
while (worklist.Count > 0)
{
State s = worklist.RemoveAndReturnFirst();
foreach (State p in dictionary[s])
{
if (!live.Contains(p))
{
live.Add(p);
worklist.AddLast(p);
}
}
}
return live;
}