DexBackedAnnotation.java revision d1662b67fecaf835227aff3a136949a2358ccd4e 
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.dexbacked;
33
34import org.jf.dexlib2.dexbacked.util.VariableSizeList;
35import org.jf.dexlib2.iface.Annotation;
36import org.jf.dexlib2.iface.AnnotationElement;
37
38import javax.annotation.Nonnull;
39import java.util.List;
40
41public class DexBackedAnnotation implements Annotation {
42    @Nonnull public final DexBuffer dexBuf;
43
44    public final int visibility;
45    public final int typeIndex;
46    private final int elementsOffset;
47
48    public DexBackedAnnotation(@Nonnull DexBuffer dexBuf,
49                               int annotationOffset) {
50        this.dexBuf = dexBuf;
51
52        DexReader reader = dexBuf.readerAt(annotationOffset);
53        this.visibility = reader.readUbyte();
54        this.typeIndex = reader.readSmallUleb128();
55        this.elementsOffset = reader.getOffset();
56    }
57
58    @Override public int getVisibility() { return visibility; }
59    @Nonnull @Override public String getType() { return dexBuf.getType(typeIndex); }
60
61    @Nonnull
62    @Override
63    public List<? extends AnnotationElement> getElements() {
64        DexReader reader = dexBuf.readerAt(elementsOffset);
65        final int size = reader.readSmallUleb128();
66
67        return new VariableSizeList<AnnotationElement>(dexBuf, reader.getOffset()) {
68            @Nonnull
69            @Override
70            protected AnnotationElement readItem(@Nonnull DexReader reader, int index) {
71                return new DexBackedAnnotationElement(reader);
72            }
73
74            @Override
75            protected void skipItem(@Nonnull DexReader reader, int index) {
76                DexBackedAnnotationElement.skipFrom(reader);
77            }
78
79            @Override public int size() { return size;}
80        };
81    }
82}
83