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.value;
33
34import org.jf.dexlib2.base.value.BaseAnnotationEncodedValue;
35import org.jf.dexlib2.dexbacked.DexBackedAnnotationElement;
36import org.jf.dexlib2.dexbacked.DexBackedDexFile;
37import org.jf.dexlib2.dexbacked.DexReader;
38import org.jf.dexlib2.dexbacked.util.VariableSizeSet;
39import org.jf.dexlib2.iface.value.AnnotationEncodedValue;
40
41import javax.annotation.Nonnull;
42import java.util.Set;
43
44public class DexBackedAnnotationEncodedValue extends BaseAnnotationEncodedValue implements AnnotationEncodedValue {
45    @Nonnull public final DexBackedDexFile dexFile;
46    @Nonnull public final String type;
47    private final int elementCount;
48    private final int elementsOffset;
49
50    public DexBackedAnnotationEncodedValue(@Nonnull DexReader reader) {
51        this.dexFile = reader.dexBuf;
52        this.type = dexFile.getType(reader.readSmallUleb128());
53        this.elementCount = reader.readSmallUleb128();
54        this.elementsOffset = reader.getOffset();
55        skipElements(reader, elementCount);
56    }
57
58    public static void skipFrom(@Nonnull DexReader reader) {
59        reader.skipUleb128(); // type
60        int elementCount = reader.readSmallUleb128();
61        skipElements(reader, elementCount);
62    }
63
64    private static void skipElements(@Nonnull DexReader reader, int elementCount) {
65        for (int i=0; i<elementCount; i++) {
66            reader.skipUleb128();
67            DexBackedEncodedValue.skipFrom(reader);
68        }
69    }
70
71    @Nonnull @Override public String getType() { return type; }
72
73    @Nonnull
74    @Override
75    public Set<? extends DexBackedAnnotationElement> getElements() {
76        return new VariableSizeSet<DexBackedAnnotationElement>(dexFile, elementsOffset, elementCount) {
77            @Nonnull
78            @Override
79            protected DexBackedAnnotationElement readNextItem(@Nonnull DexReader dexReader, int index) {
80                return new DexBackedAnnotationElement(dexReader);
81            }
82        };
83    }
84}
85