/*
* geração das transitions baseado no protocolo da ação.
*/
public List <Transition> getTransitions(XmlNode node, MetaUnit unit, int initial, int final, int numStates, int numTransations)
{
List <Transition> transitions = new List <Transition> ();
Queue <Transition> treat = new Queue <Transition> ();
//Console.WriteLine("Initial {0} | Final {1} | numStates {2} | numTrans {3}", initial, final, numStates, numTransations);
treat.Enqueue(new Transition(initial, final, node, numTransations++));
Transition t;
XmlNode pivotNode, child, guardNode;
XmlNodeList children;
XmlAttribute attr;
Condition condition;
int initialState, finalState;
bool repeat;
initialState = finalState = 0;
while (treat.Count > 0)
{
t = treat.Dequeue();
pivotNode = (XmlNode)t.Action;
t.Action = null;
transitions.Add(t);
condition = null;
attr = (XmlAttribute)pivotNode.Attributes.GetNamedItem("id");
if (attr != null)
{
t.AddId(attr.Value);
}
repeat = false;
attr = (XmlAttribute)pivotNode.Attributes.GetNamedItem("repeat");
if (attr != null)
{
repeat = attr.Value.Equals("true");
}
guardNode = pivotNode.SelectSingleNode("guard");
condition = null;
//Console.WriteLine("[XmlLoaderUtil.getTransitions] Ação a avaliar... {0}", pivotNode.Name);
if (pivotNode.Name.Equals("seq") || pivotNode.Name.Equals("par"))
{
if (guardNode != null)
{
condition = getCondition(guardNode);
Transition tElse;
initialState = numStates++;
if (condition != null) //condition nao é else.
{
transitions.Add(new Transition(t.InitialState, initialState, new ExecutionAction(null, condition), Transition.INTERNAL_TRANSITION));
tElse = new Transition(t.InitialState, t.FinalState, Configuration.LAMBDA_TRANSITION, Transition.INTERNAL_TRANSITION);
}
else
{
tElse = new Transition(t.InitialState, initialState, Configuration.LAMBDA_TRANSITION, Transition.INTERNAL_TRANSITION);
}
tElse.IsElse = true;
transitions.Add(tElse);
}
else
{
initialState = t.InitialState;
}
}
switch (pivotNode.Name)
{
case "seq":
children = pivotNode.ChildNodes;
for (int r = 0; r < children.Count; r++)
{
child = children.Item(r);
if (child.Name.Equals("guard"))
{
continue;
}
if (r == (children.Count - 1))
{
if (repeat)
{
finalState = t.InitialState;
}
else
{
finalState = t.FinalState;
}
}
else
{
finalState = numStates++;
}
treat.Enqueue(new Transition(initialState, finalState, child.FirstChild, numTransations++));
initialState = finalState;
}
break;
case "par":
children = pivotNode.ChildNodes;
if (repeat)
{
finalState = numStates++;
transitions.Add(new Transition(finalState, t.InitialState, Configuration.LAMBDA_TRANSITION, Transition.INTERNAL_TRANSITION));
}
else
{
finalState = t.FinalState;
}
for (int r = 0; r < children.Count; r++)
{
child = children.Item(r);
if (child.Name.Equals("guard"))
{
continue;
}
treat.Enqueue(new Transition(initialState, finalState, child.FirstChild, numTransations++));
}
break;
case "perform":
bool isElse = false;
initialState = t.InitialState;
finalState = t.FinalState;
child = pivotNode;
if (guardNode != null)
{
condition = getCondition(guardNode);
if (condition == null)
{
isElse = true;
}
}
attr = (XmlAttribute)child.Attributes.GetNamedItem("slice_id");
//Console.WriteLine("[XmlLoaderUtil.getTransitions] Avaliando ação sobre a fatia {0}", attr.Value);
string sliceName = "";
if (attr != null)
{
sliceName = attr.Value;
}
string methodName = child.Attributes.GetNamedItem("action_id").Value;
//Console.WriteLine("[XmlLoaderUtil.getTransitions] Avaliando ação {0}", methodName);
MetaAction selectedAction = null;
if (sliceName.Equals(""))
{
//Console.WriteLine("[XmlLoaderUtil.getTransitions] unit {0} | action {1}", unit.Name, methodName);
unit.Actions.TryGetValue(methodName, out selectedAction);
//Console.WriteLine("[XmlLoaderUtil.getTransitions] Action {0} encontrada? {1}",methodName, selectedAction != null);
if (selectedAction == null)
{
selectedAction = new MetaAction();
selectedAction.Id = generator.genId();
selectedAction.Name = methodName;
selectedAction.Father = unit;
unit.AddAction(methodName, selectedAction);
}
}
else
{
MetaSlice slice = null;
//Console.WriteLine("[XmlLoaderUtil.getTransitions] slice {0}", sliceName);
unit.Slices.TryGetValue(sliceName, out slice);
if (slice == null && candidateSlices != null)
{
candidateSlices.TryGetValue(sliceName, out slice);
}
if (slice != null)
{
//Console.WriteLine("[XmlLoaderUtil.getTransitions] slice {0} encontrada", sliceName);
if (slice.Unit.Actions != null)
{
foreach (MetaAction mact in slice.Unit.Actions.Values)
{
if (mact.Name.Equals(methodName))
{
selectedAction = mact;
break;
}
}
}
if (selectedAction == null)
{
selectedAction = new MetaAction();
selectedAction.Id = generator.genId();
selectedAction.Name = methodName;
selectedAction.Father = slice.Unit;
slice.Unit.AddAction(methodName, selectedAction);
}
}
}
if (selectedAction != null)
{
Transition tst = new Transition(initialState, finalState, new ExecutionAction(selectedAction, condition), numTransations++);
tst.IsElse = isElse;
transitions.Add(tst);
}
else
{
throw new Exception("Fatia inexistente nesta unidade: " + sliceName);
}
break;
default:
throw new Exception("invalid action: " + pivotNode.Name);
}
}
this.numStates = numStates;
this.numTransations = numTransations;
return(transitions);
}