private SMTransition parseTransition(Queue<IXamlElement> token)
{
// Transition
SMTransition transition = new SMTransition();
// Trigger
SMTrigger trigger;
// Reference
String reference;
String refTrigger;
String condition;
// [Start] Transition
IXamlElement element = token.Dequeue();
bool attRef = element.Attributes.TryGetValue("To", out reference);
bool attTrigger = element.Attributes.TryGetValue("Trigger", out refTrigger);
bool attCondition = element.Attributes.TryGetValue("Condition", out condition);
// To
if (attRef)
{
transition.To = extractReference(reference);
}
// Trigger
if (attTrigger)
{
String id = extractReference(refTrigger);
if (triggers.ContainsKey(id))
{
triggers[id].Transitions.Add(transition);
}
else
{
// Warning
log.Warn("Warning Trigger created before IActivity was found!");
trigger = new SMTrigger();
trigger.Transitions.Add(transition);
triggers.Add(id, trigger);
}
}
// Condition
if (attCondition)
{
transition.Condition = true;
}
while (!token.Peek().QName.Equals(createQName("Transition")))
{
if (token.Peek().QName.Equals(createQName("Transition.Trigger")))
{
// [Start] Transition.Trigger
token.Dequeue();
// Trigger Reference
String triggerRef;
if (token.Peek().Attributes.TryGetValue("x:Name", out triggerRef))
{
// Activity
IActivity activity = moduleFactory.CreateActivity(token.Peek().QName);
IActivity triggerActivity;
if (activity != null)
{
triggerActivity = activity.Parse(token);
}
else
{
throw new ParseException(String.Format("No Module found for activity '{0}'", QName), initialTokenCount - token.Count, QName);
}
if (triggers.ContainsKey(triggerRef))
{
log.Warn("Warning trigger existent!");
triggers[triggerRef].Trigger = triggerActivity;
triggers[triggerRef].Transitions.Add(transition);
}
else
{
trigger = new SMTrigger();
trigger.Trigger = triggerActivity;
trigger.Transitions.Add(transition);
triggers.Add(triggerRef, trigger);
}
}
else
{
// Activity
IActivity activity = moduleFactory.CreateActivity(token.Peek().QName);
IActivity triggerActivity;
if (activity != null)
{
triggerActivity = activity.Parse(token);
}
else
{
throw new ParseException(String.Format("No Module found for activity '{0}'", QName), initialTokenCount - token.Count, QName);
}
trigger = new SMTrigger();
trigger.Trigger = triggerActivity;
trigger.Transitions.Add(transition);
triggerKey++;
triggers.Add(triggerKey.ToString(), trigger);
}
// [End] Transition.Trigger
token.Dequeue();
}
else if (token.Peek().QName.Equals(createQName("Transition.Condition")))
{
// [Start] Transition.Condition
token.Dequeue();
transition.Condition = true;
// [End] Transition.Condition
token.Dequeue();
}
else if (token.Peek().QName.Equals(createQName("Transition.Action")))
{
// [Start] Transition.Action
token.Dequeue();
// Activity
IActivity activity = moduleFactory.CreateActivity(token.Peek().QName);
if (activity != null)
{
transition.Action = activity.Parse(token);
}
else
{
throw new ParseException(String.Format("No Module found for activity '{0}'", QName), initialTokenCount - token.Count, QName);
}
// [End] Transition.Action
token.Dequeue();
}
else if (token.Peek().QName.Equals(createQName("Transition.To")))
{
// [Start] Transition.To
token.Dequeue();
if (token.Peek().QName.Equals(createQName("State")))
{
transition.To = token.Peek().Attributes["x:Name"];
// Recursion
parseState(token);
}
else if (token.Peek().QName.Equals(createQName("Reference", ns_x)))
{
// [Start] Reference
element = token.Dequeue();
reference = element.Attributes["Reference"];
transition.To = reference;
// [End] Reference
token.Dequeue();
}
else
{
throw new ParseException(String.Format("Unknown tag found in activity '{0}'", QName), initialTokenCount - token.Count, QName);
}
// [End] Transition.To
token.Dequeue();
}
else
{
throw new ParseException(String.Format("Unknown tag found in activity '{0}'", QName), initialTokenCount - token.Count, QName);
}
}
// [End] Transition
token.Dequeue();
return transition;
}
