public StateChangedEventArgs(TStateCode oldState, TStateCode newState, ulong stateChangeCount, DateTime?ts = null)
{
TimeStamp = ts ?? TimeStampSource.Now;
OldState = oldState;
NewState = newState;
StateChangeCount = stateChangeCount;
_stringRep = new LocklessLazyWriteOnce <string>(() =>
$"At [{TimeStamp:O}], the state (change# {StateChangeCount}) changed from [{OldState.ToString()}] to [{NewState.ToString()}].");
}
private TransitionPredicateTrueEventArgs(TStateCode origin, int priority, [NotNull] string name, [NotNull] string predText,
ImmutableArray <TStateCode> destinations)
{
_timeStamp = TimeStampSource.Now;
_priority = priority;
_originState = origin;
_predicateText = predText ?? throw new ArgumentNullException(nameof(predText));
_destinationStates = destinations;
_transitionName = name ?? throw new ArgumentNullException(nameof(predText));
_stringRep = new LocklessLazyWriteOnce <string>(GetStringRep);
}
protected StateMachineStateBase(TStateCode code, [NotNull] TFlagVault flagVault,
[NotNull] IEventRaiser raiser)
{
if (!code.IsValueDefined())
{
throw new ArgumentException($"The enum value [{code}] is not defined.", nameof(code));
}
if (raiser == null)
{
throw new ArgumentNullException(nameof(raiser));
}
if (!raiser.ThreadActive || raiser.IsDisposed)
{
throw new ArgumentException("The event raiser is disposed or faulted.", nameof(raiser));
}
_raiser = raiser;
_transitionTable = new LocklessLazyWriteOnce <ImmutableSortedSet <TStateTransition> >(InitTransitionTable);
FlagVault = flagVault ?? throw new ArgumentNullException(nameof(flagVault));
_concreteType = new LocklessConcreteType(this);
StateCode = code;
}
TTaskResult, TStateType, TStateCodeBacker, TStateTransition, TFlagVault> PerformGetNextState(TStateCode code);
