public Object unmarshal()

in xstream/src/java/com/thoughtworks/xstream/converters/reflection/CGLIBEnhancedConverter.java [349:406]
57 lines of code
9 McCabe index (conditional complexity)

    public Object unmarshal(final HierarchicalStreamReader reader, final UnmarshallingContext context) {
        final Enhancer enhancer = new Enhancer();
        reader.moveDown();
        enhancer.setSuperclass((Class<?>)context.convertAnother(null, Class.class));
        reader.moveUp();
        reader.moveDown();
        final List<Class<?>> interfaces = new ArrayList<>();
        while (reader.hasMoreChildren()) {
            reader.moveDown();
            interfaces.add((Class<?>)context.convertAnother(null, mapper.realClass(reader.getNodeName())));
            reader.moveUp();
        }
        enhancer.setInterfaces(interfaces.toArray(new Class[interfaces.size()]));
        reader.moveUp();
        reader.moveDown();
        final boolean useFactory = Boolean.valueOf(reader.getValue()).booleanValue();
        enhancer.setUseFactory(useFactory);
        reader.moveUp();

        final List<Callback> callbacksToEnhance = new ArrayList<>();
        final List<Callback> callbacks = new ArrayList<>();
        Map<Method, Integer> callbackIndexMap = null;
        reader.moveDown();
        if ("callbacks".equals(reader.getNodeName())) {
            reader.moveDown();
            @SuppressWarnings("unchecked")
            final Map<Method, Integer> typedMap = (Map<Method, Integer>)context.convertAnother(null, HashMap.class);
            callbackIndexMap = typedMap;
            reader.moveUp();
            while (reader.hasMoreChildren()) {
                reader.moveDown();
                readCallback(reader, context, callbacksToEnhance, callbacks);
                reader.moveUp();
            }
        } else {
            readCallback(reader, context, callbacksToEnhance, callbacks);
        }
        enhancer.setCallbacks(callbacksToEnhance.toArray(new Callback[callbacksToEnhance.size()]));
        if (callbackIndexMap != null) {
            enhancer.setCallbackFilter(new ReverseEngineeredCallbackFilter(callbackIndexMap));
        }
        reader.moveUp();
        Object result = null;
        while (reader.hasMoreChildren()) {
            reader.moveDown();
            if (reader.getNodeName().equals("serialVersionUID")) {
                enhancer.setSerialVersionUID(Long.valueOf(reader.getValue()));
            } else if (reader.getNodeName().equals("instance")) {
                result = create(enhancer, callbacks, useFactory);
                super.doUnmarshalConditionally(result, reader, context);
            }
            reader.moveUp();
        }
        if (result == null) {
            result = create(enhancer, callbacks, useFactory);
        }
        return serializationMembers.callReadResolve(result);
    }