private static boolean verifyTransitionTargets()

in src/main/java/org/apache/commons/scxml2/io/ModelUpdater.java [447:476]

• 25 lines of code
• 13 McCabe index (conditional complexity)

    private static boolean verifyTransitionTargets(final Set<TransitionTarget> tts) {
        if (tts.size() < 2) { // No contention
            return true;
        }
        TransitionTarget first = null;
        int i = 0;
        for (final TransitionTarget tt : tts) {
            if (first == null) {
                first = tt;
                i = tt.getNumberOfAncestors();
                continue;
            }
            // find least common ancestor
            for (i = Math.min(i, tt.getNumberOfAncestors()); i > 0 && first.getAncestor(i-1) != tt.getAncestor(i-1); i--) {

            }
            if (i == 0) {
                // no common ancestor
                return false;
            }
            // ensure no target is an ancestor of any other target on the list
            for (final TransitionTarget other : tts) {
                if (other != tt && other.isDescendantOf(tt) || tt.isDescendantOf(other)) {
                    return false;
                }
            }
        }
        // least common ancestor must be a parallel
        return first != null && i > 0 && first.getAncestor(i-1) instanceof Parallel;
   }