private void AddTransition(S fromState, E evt, ITransition <S, E, C> transition)
{
//TODO(WH): create an extension for IDictionary<T>.ComputeIfAbsent(key, k => new T()).
var map = (EventToTransitionsMap)null;
if (!m_TransitionMap.TryGetValue(fromState, out map))
{
map = new EventToTransitionsMap();
m_TransitionMap.Add(fromState, map);
}
var transitions = (TransitionCollection)null;
if (!map.TryGetValue(evt, out transitions))
{
transitions = new TransitionCollection();
map.Add(evt, transitions);
}
transitions.Add(transition);
}
private bool FireEvent(IStateMachine <S, E, C> machine, E evt, EventToTransitionsMap transitionMap, S fromState, C context)
{
if (transitionMap == null)
{
return(false);
}
var transitions = (TransitionCollection)null;
if (!transitionMap.TryGetValue(evt, out transitions))
{
return(false);
}
foreach (var transition in transitions)
{
if (transition.IsSatisfied(context))
{
SetStateWithEntryExitActions(machine, fromState, transition.To, transition, evt, context);
return(true);
}
}
return(false);
}
