internal StateConfiguration(Dictionary <TState, StateRepresentation <TState, TTrigger> > representations,
TState currentState)
{
Representations = representations;
CurrentStateRepresentation = StateConfigurationHelper.FindOrCreateStateRepresentation(currentState,
representations);
}
internal static TriggerRepresentation <TTrigger> FindOrCreateTriggerRepresentation <TState, TTrigger>(
TTrigger trigger,
StateRepresentation <TState, TTrigger> representation)
{
var rep = FindTriggerRepresentation(trigger, representation);
return(rep ?? CreateTriggerRepresentation(trigger, representation));
}
internal static StateRepresentation <TState, TTrigger> CreateStateRepresentation <TState, TTrigger>(TState state,
Dictionary <TState, StateRepresentation <TState, TTrigger> > representations)
{
var rep = new StateRepresentation <TState, TTrigger>(state);
representations[state] = rep;
return(rep);
}
internal static TriggerRepresentation <TTrigger> CreateTriggerRepresentation <TState, TTrigger>(
TTrigger trigger,
StateRepresentation <TState, TTrigger> representation)
{
var rep = new TriggerRepresentation <TTrigger>(trigger);
representation.Triggers.Add(rep);
return(rep);
}
internal static void FireCore <TState, TTrigger>(TTrigger trigger, RawStateMachineBase <TState, TTrigger> machine,
bool raiseInvalidStateOrTrigger = true)
{
var currentStateRepresentation = machine.CurrentStateRepresentation;
var triggerRep = DiagnosticsHelper.FindAndEvaluateTriggerRepresentation(trigger, machine,
raiseInvalidStateOrTrigger);
if (triggerRep == null)
{
return;
}
// Catch invalid parameters before execution.
Action <Transition <TState, TTrigger> > triggerAction = null;
try { triggerAction = (Action <Transition <TState, TTrigger> >)triggerRep.OnTriggerAction; }
catch (InvalidCastException)
{
if (raiseInvalidStateOrTrigger)
{
machine.RaiseInvalidTrigger(trigger);
}
return;
}
StateRepresentation <TState, TTrigger> nextStateRep = null;
if (StateConfigurationHelper.CheckFlag(triggerRep.TransitionFlags,
TransitionFlag.DynamicState))
{
var dynamicState = ((Func <DynamicState <TState> >)triggerRep.NextStateRepresentationWrapper)();
if (!dynamicState.CanTransition)
{
return;
}
var state = dynamicState.ResultingState;
nextStateRep = StateConfigurationHelper.FindStateRepresentation(state,
machine.Representations);
if (nextStateRep == null)
{
if (raiseInvalidStateOrTrigger)
{
machine.RaiseInvalidState(state);
}
return;
}
}
else
{
nextStateRep = (StateRepresentation <TState, TTrigger>)triggerRep.NextStateRepresentationWrapper;
}
var transition = new Transition <TState, TTrigger>(currentStateRepresentation.State, nextStateRep.State, trigger);
machine.RaiseTransitionStarted(nextStateRep.State);
// Current exit
var currentExit = currentStateRepresentation.OnExitAction;
currentExit?.Invoke(transition);
// Trigger entry
triggerAction?.Invoke(transition);
// Next entry
var nextEntry = nextStateRep.OnEntryAction;
nextEntry?.Invoke(transition);
var pastState = machine.CurrentState;
machine.CurrentStateRepresentation = nextStateRep;
machine.RaiseTransitionExecuted(pastState);
}
internal static TriggerRepresentation <TTrigger> FindTriggerRepresentation <TState, TTrigger>(
TTrigger trigger,
StateRepresentation <TState, TTrigger> representation)
{
return(representation.Triggers.Find(x => x.Trigger.Equals(trigger)));
}