public void recordHistory()

in src/main/java/org/apache/commons/scxml2/semantics/SCXMLSemanticsImpl.java [393:422]

• 28 lines of code
• 10 McCabe index (conditional complexity)

    public void recordHistory(final Step step, final Set<EnterableState> atomicStates, final Set<EnterableState> activeStates) {
        for (final EnterableState es : step.getExitSet()) {
            if (es instanceof TransitionalState && ((TransitionalState)es).hasHistory()) {
                final TransitionalState ts = (TransitionalState)es;
                Set<EnterableState> shallow = null;
                Set<EnterableState> deep = null;
                for (final History h : ts.getHistory()) {
                    if (h.isDeep()) {
                        if (deep == null) {
                            //calculate deep history for a given state once
                            deep = new HashSet<>();
                            for (final EnterableState ott : atomicStates) {
                                if (ott.isDescendantOf(es)) {
                                    deep.add(ott);
                                }
                            }
                        }
                        step.getNewHistoryConfigurations().put(h, deep);
                    } else {
                        if (shallow == null) {
                            //calculate shallow history for a given state once
                            shallow = new HashSet<>(ts.getChildren());
                            shallow.retainAll(activeStates);
                        }
                        step.getNewHistoryConfigurations().put(h, shallow);
                    }
                }
            }
        }
    }