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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.dexbacked;
     33 
     34 import org.jf.dexlib2.base.BaseAnnotation;
     35 import org.jf.dexlib2.dexbacked.util.VariableSizeSet;
     36 
     37 import javax.annotation.Nonnull;
     38 import java.util.Set;
     39 
     40 public class DexBackedAnnotation extends BaseAnnotation {
     41     @Nonnull public final DexBackedDexFile dexFile;
     42 
     43     public final int visibility;
     44     public final int typeIndex;
     45     private final int elementsOffset;
     46 
     47     public DexBackedAnnotation(@Nonnull DexBackedDexFile dexFile,
     48                                int annotationOffset) {
     49         this.dexFile = dexFile;
     50 
     51         DexReader reader = dexFile.readerAt(annotationOffset);
     52         this.visibility = reader.readUbyte();
     53         this.typeIndex = reader.readSmallUleb128();
     54         this.elementsOffset = reader.getOffset();
     55     }
     56 
     57     @Override public int getVisibility() { return visibility; }
     58     @Nonnull @Override public String getType() { return dexFile.getType(typeIndex); }
     59 
     60     @Nonnull
     61     @Override
     62     public Set<? extends DexBackedAnnotationElement> getElements() {
     63         DexReader reader = dexFile.readerAt(elementsOffset);
     64         final int size = reader.readSmallUleb128();
     65 
     66         return new VariableSizeSet<DexBackedAnnotationElement>(dexFile, reader.getOffset(), size) {
     67             @Nonnull
     68             @Override
     69             protected DexBackedAnnotationElement readNextItem(@Nonnull DexReader reader, int index) {
     70                 return new DexBackedAnnotationElement(reader);
     71             }
     72         };
     73     }
     74 }
     75