internal void BackwardTraversal(IEnumerable <long> targetTransitionTargets, Action <long> actionOnResultingTransitionTarget, Func <long, bool> transitionTargetsToIgnore)
{
var transitionTargetNodes = targetTransitionTargets.Select(TransitionTargetToNodeIndex);
Func <long, bool> ignoreNodeFunc =
node =>
{
var transitionTarget = TryGetTransitionTargetIndex(node);
if (transitionTarget == null)
{
return(false);
}
return(transitionTargetsToIgnore(transitionTarget.Value));
};
var ancestors = _baseGraph.GetAncestors(transitionTargetNodes, ignoreNodeFunc);
foreach (var ancestor in ancestors)
{
var transitionTargetOfAncestor = TryGetTransitionTargetIndex(ancestor.Key);
if (transitionTargetOfAncestor != null)
{
actionOnResultingTransitionTarget(transitionTargetOfAncestor.Value);
}
}
}
