BaseAnnotation.java revision 60ca2ce0aea7d834dfbc2535e841af4a2e95718d
1/* 2 * Copyright 2012, Google Inc. 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions are 7 * met: 8 * 9 * * Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * * Redistributions in binary form must reproduce the above 12 * copyright notice, this list of conditions and the following disclaimer 13 * in the documentation and/or other materials provided with the 14 * distribution. 15 * * Neither the name of Google Inc. nor the names of its 16 * contributors may be used to endorse or promote products derived from 17 * this software without specific prior written permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 20 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 21 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 22 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 23 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 24 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 25 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 26 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 27 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 28 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 29 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32package org.jf.dexlib2.base; 33 34import org.jf.dexlib2.iface.Annotation; 35import org.jf.dexlib2.iface.AnnotationElement; 36 37import javax.annotation.Nonnull; 38 39public abstract class BaseAnnotation implements Annotation { 40 @Override 41 public int hashCode() { 42 return hashCode(this); 43 } 44 45 @Override 46 public boolean equals(Object o) { 47 if (o != null && o instanceof Annotation) { 48 return equals(this, (Annotation)o); 49 } 50 return false; 51 } 52 53 public static int hashCode(@Nonnull Annotation annotation) { 54 int hashCode = annotation.getVisibility(); 55 hashCode = hashCode*31 + annotation.getType().hashCode(); 56 for (AnnotationElement element: annotation.getElements()) { 57 hashCode = hashCode*31 + element.hashCode(); 58 } 59 return hashCode; 60 } 61 62 public static boolean equals(@Nonnull Annotation annotation1, @Nonnull Annotation annotation2) { 63 return (annotation1.getVisibility() == annotation2.getVisibility()) && 64 annotation1.getType().equals(annotation2.getType()) && 65 annotation1.getElements().equals(annotation2.getElements()); 66 } 67} 68