2 * Copyright (c) 2010-2023 Contributors to the openHAB project
4 * See the NOTICE file(s) distributed with this work for additional
7 * This program and the accompanying materials are made available under the
8 * terms of the Eclipse Public License 2.0 which is available at
9 * http://www.eclipse.org/legal/epl-2.0
11 * SPDX-License-Identifier: EPL-2.0
13 package org.openhab.binding.echonetlite.internal;
15 import org.eclipse.jdt.annotation.NonNullByDefault;
18 * @author Michael Barker - Initial contribution
21 public enum EchonetClassIndex {
24 private static final EchonetClass[] INDEX = new EchonetClass[1 << 16];
26 final EchonetClass[] values = EchonetClass.values();
27 for (final EchonetClass value : values) {
28 INDEX[codeToIndex(value.groupCode(), value.classCode())] = value;
32 public static int codeToIndex(final int groupCode, final int classCode) {
33 return ((0xFF & groupCode) << 8) + (0xFF & classCode);
36 public EchonetClass lookup(final int groupCode, final int classCode) {
37 return INDEX[codeToIndex(groupCode, classCode)];