private bool TryFindLocalHandler(TTrigger trigger, object[] args, out TriggerBehaviourResult handlerResult)
{
// Get list of candidate trigger handlers
if (!TriggerBehaviours.TryGetValue(trigger, out ICollection <TriggerBehaviour> possible))
{
handlerResult = null;
return(false);
}
// Guard functions are executed here
var actual = possible
.Select(h => new TriggerBehaviourResult(h, h.UnmetGuardConditions(args)))
.ToArray();
// Find a handler for the trigger
handlerResult = TryFindLocalHandlerResult(trigger, actual)
?? TryFindLocalHandlerResultWithUnmetGuardConditions(actual);
if (handlerResult == null)
{
return(false);
}
return(!handlerResult.UnmetGuardConditions.Any());
}
bool TryFindLocalHandler(TTrigger trigger, object[] args, out TriggerBehaviourResult handlerResult)
{
// Get list of candidate trigger handlers
if (!_triggerBehaviours.TryGetValue(trigger, out ICollection <TriggerBehaviour> possible))
{
handlerResult = null;
return(false);
}
// Remove those that have unmet guard conditions
// Guard functions are executed here
var actual = possible
.Select(h => new TriggerBehaviourResult(h, h.UnmetGuardConditions(args)))
.Where(g => g.UnmetGuardConditions.Count == 0)
.ToArray();
// Find a handler for the trigger
handlerResult = TryFindLocalHandlerResult(trigger, actual, r => !r.UnmetGuardConditions.Any())
?? TryFindLocalHandlerResult(trigger, actual, r => r.UnmetGuardConditions.Any());
if (handlerResult == null)
{
return(false);
}
return(!handlerResult.UnmetGuardConditions.Any());
}
public bool TryFindHandler(TTrigger trigger, object[] args, out TriggerBehaviourResult handler)
{
TriggerBehaviourResult superStateHandler = null;
bool handlerFound = (TryFindLocalHandler(trigger, args, out TriggerBehaviourResult localHandler) ||
(Superstate != null && Superstate.TryFindHandler(trigger, args, out superStateHandler)));
// If no handler for super state, replace by local handler (see issue #398)
handler = superStateHandler ?? localHandler;
return(handlerFound);
}
bool TryFindLocalHandler(TTrigger trigger, out TriggerBehaviourResult handlerResult)
{
if (!_triggerBehaviours.TryGetValue(trigger, out ICollection <TriggerBehaviour> possible))
{
handlerResult = null;
return(false);
}
// Guard functions executed
var actual = possible
.Select(h => new TriggerBehaviourResult(h, h.UnmetGuardConditions));
handlerResult = TryFindLocalHandlerResult(trigger, actual, r => !r.UnmetGuardConditions.Any())
?? TryFindLocalHandlerResult(trigger, actual, r => r.UnmetGuardConditions.Any());
return(!handlerResult.UnmetGuardConditions.Any());
}
public bool TryFindHandler(TTrigger trigger, object[] args, out TriggerBehaviourResult handler)
{
return(TryFindLocalHandler(trigger, args, out handler) ||
(Superstate != null && Superstate.TryFindHandler(trigger, args, out handler)));
}
