public static Object convertRV()

in dbus-java/src/main/java/org/freedesktop/dbus/RemoteInvocationHandler.java [47:92]
41 lines of code
11 McCabe index (conditional complexity)

    public static Object convertRV(String sig, Object[] rp, Method m, AbstractConnection conn) throws DBusException {
        Class<? extends Object> c = m.getReturnType();

        if (null == rp) {
            if (null == c || Void.TYPE.equals(c)) {
                return null;
            } else {
                throw new DBusException("Wrong return type (got void, expected a value)");
            }
        } else {
            try {
                LOGGER.trace("Converting return parameters from {} to type {}",Arrays.deepToString(rp), m.getGenericReturnType());
                rp = Marshalling.deSerializeParameters(rp, new Type[] {
                        m.getGenericReturnType()
                }, conn);
            } catch (Exception e) {
                LOGGER.debug("Wrong return type.", e);
                throw new DBusException(String.format("Wrong return type (failed to de-serialize correct types: %s )", e.getMessage()));
            }
        }

        switch (rp.length) {
        case 0:
            if (null == c || Void.TYPE.equals(c)) {
                return null;
            } else {
                throw new DBusException("Wrong return type (got void, expected a value)");
            }
        case 1:
            return rp[0];
        default:

            // check we are meant to return multiple values
            if (!Tuple.class.isAssignableFrom(c)) {
                throw new DBusException("Wrong return type (not expecting Tuple)");
            }

            Constructor<? extends Object> cons = c.getConstructors()[0];
            try {
                return cons.newInstance(rp);
            } catch (Exception e) {
                LOGGER.debug("", e);
                throw new DBusException(e.getMessage());
            }
        }
    }