private async Task <StateRepresentation> EnterStateAsync(StateRepresentation representation, Transition transition, object[] args)
{
// Enter the new state
await representation.EnterAsync(transition, args);
if (FiringMode.Immediate.Equals(_firingMode) && !State.Equals(transition.Destination))
{
// This can happen if triggers are fired in OnEntry
// Must update current representation with updated State
representation = GetRepresentation(State);
transition = new Transition(transition.Source, State, transition.Trigger, args);
}
// Recursively enter substates that have an initial transition
if (representation.HasInitialTransition)
{
// Verify that the target state is a substate
// Check if state has substate(s), and if an initial transition(s) has been set up.
if (!representation.GetSubstates().Any(s => s.UnderlyingState.Equals(representation.InitialTransitionTarget)))
{
throw new InvalidOperationException($"The target ({representation.InitialTransitionTarget}) for the initial transition is not a substate.");
}
var initialTransition = new InitialTransition(transition.Source, representation.InitialTransitionTarget, transition.Trigger, args);
representation = GetRepresentation(representation.InitialTransitionTarget);
// Alert all listeners of initial state transition
await _onTransitionedEvent.InvokeAsync(new Transition(transition.Destination, initialTransition.Destination, transition.Trigger, transition.Parameters));
representation = await EnterStateAsync(representation, initialTransition, args);
}
return(representation);
}