public void addDescendantStatesToEnter()

in src/main/java/org/apache/commons/scxml2/semantics/SCXMLSemanticsImpl.java [108:153]
46 lines of code
15 McCabe index (conditional complexity)

    public void addDescendantStatesToEnter(final SCXMLExecutionContext exctx, final Step step,
                                              final TransitionTarget tt) {
        if (tt instanceof History) {
            final History h = (History) tt;
            Set<EnterableState> lastConfiguration = step.getNewHistoryConfigurations().get(h);
            if (lastConfiguration == null) {
                lastConfiguration = exctx.getScInstance().getLastConfiguration(h);
            }
            if (lastConfiguration.isEmpty()) {
                step.getDefaultHistoryTransitions().put(h.getParent(), h.getTransition());
                for (final TransitionTarget dtt : h.getTransition().getTargets()) {
                    addDescendantStatesToEnter(exctx, step, dtt);
                }
                for (final TransitionTarget dtt : h.getTransition().getTargets()) {
                    addAncestorStatesToEnter(exctx, step, dtt, tt.getParent());
                }
            } else {
                for (final TransitionTarget dtt : lastConfiguration) {
                    addDescendantStatesToEnter(exctx, step, dtt);
                }
                for (final TransitionTarget dtt : lastConfiguration) {
                    addAncestorStatesToEnter(exctx, step, dtt, tt.getParent());
                }
            }
        }
        else { // tt instanceof EnterableState
            final EnterableState es = (EnterableState)tt;
            step.getEntrySet().add(es);
            if (es instanceof Parallel) {
                for (final EnterableState child : ((Parallel)es).getChildren()) {
                    if (containsNoDescendant(step.getEntrySet(), child)) {
                        addDescendantStatesToEnter(exctx, step, child);
                    }
                }
            }
            else if (es instanceof State && ((State) es).isComposite()) {
                step.getDefaultEntrySet().add(es);
                for (final TransitionTarget dtt : ((State)es).getInitial().getTransition().getTargets()) {
                    addDescendantStatesToEnter(exctx, step, dtt);
                }
                for (final TransitionTarget dtt : ((State)es).getInitial().getTransition().getTargets()) {
                    addAncestorStatesToEnter(exctx, step, dtt, tt);
                }
            }
        }
    }