/// <summary>
/// Splits given token and passes the new tokens to given output places.
/// </summary>
/// <param name="outputPlaces">Output places to be fired into.</param>
/// <param name="footprint">A token to be split into output places.</param>
private void FireParallel(List <PlaceTokenTraverseOverlay> outputPlaces, FootprintAnalysisToken footprint)
{
List <FootprintAnalysisToken> newFootprints = TokenManipulationUtils.SplitToken(footprint, (uint)outputPlaces.Count, GetNewGlobalId(), ActiveGlobalIdMonitor);
for (int i = 0; i < newFootprints.Count; i++)
{
outputPlaces[i].SetFootprint(newFootprints[i]);
}
}
/// <summary>
/// Fires given transition in fitting manner based on number of input and output places.
/// </summary>
/// <param name="transition">A transition to be fired.</param>
private void FireTransition(TransitionTokenTraverseOverlay transition)
{
{
List <FootprintAnalysisToken> inputFootprints = GetFootprintsFromPlaces(transition.InputPlaces);
FootprintAnalysisToken newFootprint;
if (transition.OutputPlaces.Count > 1)
{
if (transition.InputPlaces.Count > 1)
{
newFootprint = TokenManipulationUtils.MergeTokens(inputFootprints, ActiveGlobalIdMonitor);
}
else
{
newFootprint = transition.InputPlaces[0].TokenFootprint;
}
transition.SetFootprint(newFootprint);
FireParallel(transition.OutputPlaces, newFootprint);
return;
}
if (transition.InputPlaces.Count > 1 && transition.OutputPlaces.Count > 0)
{
newFootprint = TokenManipulationUtils.MergeTokens(inputFootprints, ActiveGlobalIdMonitor);
foreach (PlaceTokenTraverseOverlay p in transition.OutputPlaces)
{
p.SetFootprint(newFootprint);
}
transition.SetFootprint(newFootprint);
return;
}
if (transition.InputPlaces.Count == 1 && transition.OutputPlaces.Count == 1)
{
newFootprint = transition.InputPlaces[0].TokenFootprint;
transition.SetFootprint(newFootprint);
transition.OutputPlaces[0].SetFootprint(newFootprint);
}
}
}
/// <summary>
/// Finds parallelism in Petri Net overlay and updates given Relation DirectDependencyMatrix accordingly.
/// </summary>
/// <param name="matrix">A relation matrix of analyzed Petri Net.</param>
/// <param name="net">Petri Net overlay.</param>
private static void FindParallelism(ref RelationMatrix matrix, PetriNetTokenTraverseOverlay net)
{
foreach (var fromTransition in net.TransitionsWithFootprints)
{
foreach (var toTransition in net.TransitionsWithFootprints)
{
if (fromTransition.Id != toTransition.Id)
{
HashSet <string> fromTransitionGlobalIds = new HashSet <string>(
TokenManipulationUtils.GetActiveGlobalIds(fromTransition.TokenFootprint));
HashSet <string> toTransitionGlobalIds = new HashSet <string>(
TokenManipulationUtils.GetActiveGlobalIds(toTransition.TokenFootprint));
if (fromTransitionGlobalIds.Overlaps(toTransitionGlobalIds) && !IsFalseParallelism(fromTransition, toTransition))
{
int fromIndex = matrix.ActivityIndices[fromTransition.Activity];
int toIndex = matrix.ActivityIndices[toTransition.Activity];
matrix.Footprint[fromIndex, toIndex] = Relation.Parallelism;
matrix.Footprint[toIndex, fromIndex] = Relation.Parallelism;
}
}
}
}
}
