internal Transition(ITaskDefinitionSymbol containingTask,
TransitionDefinitionSyntax syntax,
NodeReferenceSymbol source,
EdgeModeSymbol edgeMode,
NodeReferenceSymbol target,
SymbolCollection<TriggerSymbol> triggers) {
if (containingTask == null) {
throw new ArgumentNullException(nameof(containingTask));
}
if (syntax == null) {
throw new ArgumentNullException(nameof(syntax));
}
ContainingTask = containingTask;
Syntax = syntax;
Source = source;
EdgeMode = edgeMode;
Target = target;
Triggers = triggers??new SymbolCollection<TriggerSymbol>();
foreach (var trigger in Triggers) {
trigger.Transition = this;
}
}
internal Transition(TransitionDefinitionSyntax syntax,
NodeReferenceSymbol source,
EdgeModeSymbol edgeMode,
NodeReferenceSymbol target,
SymbolCollection<TriggerSymbol> triggers) {
if (syntax == null) {
throw new ArgumentNullException(nameof(syntax));
}
Syntax = syntax;
Source = source;
EdgeMode = edgeMode;
Target = target;
Triggers = triggers??new SymbolCollection<TriggerSymbol>();
}
public override void VisitExitTransitionDefinition(ExitTransitionDefinitionSyntax exitTransitionDefinitionSyntax) {
// Source
ITaskNodeSymbol sourceTaskNodeSymbol = null;
NodeReferenceSymbol sourceNodeReference = null;
var sourceNodeSyntax = exitTransitionDefinitionSyntax.SourceNode;
if (sourceNodeSyntax != null) {
// Source in Exit Transition muss immer ein Task sein
sourceTaskNodeSymbol = _taskDefinition.NodeDeclarations.TryFindSymbol(sourceNodeSyntax.Name) as ITaskNodeSymbol;
var location = sourceNodeSyntax.GetLocation();
if (location != null) {
sourceNodeReference = new NodeReferenceSymbol(sourceNodeSyntax.Name, location, sourceTaskNodeSymbol);
}
}
// ConnectionPoint
ConnectionPointReferenceSymbol connectionPointReference = null;
var exitIdentifier = exitTransitionDefinitionSyntax.ExitIdentifier;
if (!exitIdentifier.IsMissing && sourceTaskNodeSymbol != null) {
var exitIdentifierName = exitIdentifier.ToString();
var exitConnectionPoint = sourceTaskNodeSymbol.Declaration?.ConnectionPoints.TryFindSymbol(exitIdentifierName) as IExitConnectionPointSymbol;
var location = exitIdentifier.GetLocation();
if (location != null) {
connectionPointReference = new ConnectionPointReferenceSymbol(exitIdentifierName, location, exitConnectionPoint);
}
}
// Target
NodeReferenceSymbol targetNodeReference = null;
var targetNodeSyntax = exitTransitionDefinitionSyntax.TargetNode;
if (targetNodeSyntax != null) {
var targetNode = _taskDefinition.NodeDeclarations.TryFindSymbol(targetNodeSyntax.Name);
var location = targetNodeSyntax.GetLocation();
if(location != null) {
targetNodeReference = new NodeReferenceSymbol(targetNodeSyntax.Name, location, targetNode);
}
}
// Edge
EdgeModeSymbol edgeMode = null;
var edgeSyntax = exitTransitionDefinitionSyntax.Edge;
if (edgeSyntax != null) {
var location = edgeSyntax.GetLocation();
if(location != null) {
edgeMode = new EdgeModeSymbol(edgeSyntax.ToString(), location, edgeSyntax.Mode);
}
}
var exitTransition = new ExitTransition(exitTransitionDefinitionSyntax, _taskDefinition, sourceNodeReference, connectionPointReference, edgeMode, targetNodeReference);
AddExitTransition(exitTransition);
}
public override void VisitTransitionDefinition(TransitionDefinitionSyntax transitionDefinitionSyntax) {
// Source
NodeReferenceSymbol sourceNodeReference = null;
var sourceNodeSyntax = transitionDefinitionSyntax.SourceNode;
if (sourceNodeSyntax != null) {
var sourceNode = _taskDefinition.NodeDeclarations.TryFindSymbol(sourceNodeSyntax.Name);
// Special case "init": Hier ist implizit auch Großschreibung erlaubt
// TODO Keyword in eigene Klasse
if (sourceNode == null && sourceNodeSyntax.Name=="init") {
sourceNode = _taskDefinition.NodeDeclarations.TryFindSymbol("Init");
}
var location = sourceNodeSyntax.GetLocation();
if(location != null) {
sourceNodeReference = new NodeReferenceSymbol(sourceNodeSyntax.Name, location, sourceNode);
}
}
// Target
NodeReferenceSymbol targetNodeReference = null;
var targetNodeSyntax = transitionDefinitionSyntax.TargetNode;
if (targetNodeSyntax != null) {
var targetNode = _taskDefinition.NodeDeclarations.TryFindSymbol(targetNodeSyntax.Name);
var location = targetNodeSyntax.GetLocation();
if (location != null) {
targetNodeReference = new NodeReferenceSymbol(targetNodeSyntax.Name, location, targetNode);
}
}
// Edge
EdgeModeSymbol edgeMode=null;
var edgeSyntax = transitionDefinitionSyntax.Edge;
if (edgeSyntax != null) {
var location = edgeSyntax.GetLocation();
if(location != null) {
edgeMode = new EdgeModeSymbol(edgeSyntax.ToString(), location, edgeSyntax.Mode);
}
}
// Triggers
var triggers = GetTriggers(transitionDefinitionSyntax);
var transition = new Transition(_taskDefinition, transitionDefinitionSyntax, sourceNodeReference, edgeMode, targetNodeReference, triggers);
AddTransition(transition);
}