| /* |
| * ProGuard -- shrinking, optimization, obfuscation, and preverification |
| * of Java bytecode. |
| * |
| * Copyright (c) 2002-2017 Eric Lafortune @ GuardSquare |
| * |
| * This program is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License as published by the Free |
| * Software Foundation; either version 2 of the License, or (at your option) |
| * any later version. |
| * |
| * This program is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for |
| * more details. |
| * |
| * You should have received a copy of the GNU General Public License along |
| * with this program; if not, write to the Free Software Foundation, Inc., |
| * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| */ |
| |
| package proguard.util; |
| |
| /** |
| * This class contains utility methods operating on objects. |
| */ |
| public class ObjectUtil |
| { |
| /** |
| * Returns whether the given objects are the same. |
| * @param object1 the first object, may be null. |
| * @param object2 the second object, may be null. |
| * @return whether the objects are the same. |
| */ |
| public static boolean equal(Object object1, Object object2) |
| { |
| return object1 == null ? |
| object2 == null : |
| object1.equals(object2); |
| } |
| |
| |
| /** |
| * Returns the hash code of the given object, or 0 if it is null. |
| * @param object the object, may be null. |
| * @return the hash code. |
| */ |
| public static int hashCode(Object object) |
| { |
| return object == null ? 0 : object.hashCode(); |
| } |
| |
| |
| /** |
| * Returns a comparison of the two given objects. |
| * @param object1 the first object, may be null. |
| * @param object2 the second object, may be null. |
| * @return -1, 0, or 1. |
| * @see Comparable#compareTo(Object) |
| */ |
| public static int compare(Comparable object1, Comparable object2) |
| { |
| return object1 == null ? |
| object2 == null ? 0 : -1 : |
| object2 == null ? 1 : object1.compareTo(object2); |
| } |
| } |