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      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 
     32 package org.jf.dexlib2.base;
     33 
     34 import com.google.common.primitives.Ints;
     35 import org.jf.dexlib2.iface.Annotation;
     36 import org.jf.util.CollectionUtils;
     37 
     38 import java.util.Comparator;
     39 
     40 public abstract class BaseAnnotation implements Annotation {
     41     @Override
     42     public int hashCode() {
     43         int hashCode = getVisibility();
     44         hashCode = hashCode*31 + getType().hashCode();
     45         return hashCode*31 + getElements().hashCode();
     46     }
     47 
     48     @Override
     49     public boolean equals(Object o) {
     50         if (o instanceof Annotation) {
     51             Annotation other = (Annotation)o;
     52             return (getVisibility() == other.getVisibility()) &&
     53                    getType().equals(other.getType()) &&
     54                    getElements().equals(other.getElements());
     55         }
     56         return false;
     57     }
     58 
     59     @Override
     60     public int compareTo(Annotation o) {
     61         int res = Ints.compare(getVisibility(), o.getVisibility());
     62         if (res != 0) return res;
     63         res = getType().compareTo(o.getType());
     64         if (res != 0) return res;
     65         return CollectionUtils.compareAsSet(getElements(), o.getElements());
     66     }
     67 
     68     public static final Comparator<? super Annotation> BY_TYPE = new Comparator<Annotation>() {
     69         @Override
     70         public int compare(Annotation annotation1, Annotation annotation2) {
     71             return annotation1.getType().compareTo(annotation2.getType());
     72         }
     73     };
     74 }
     75