DexBackedDexFile.java revision 22c3185bb7c8618437eabe6c597549e0989ec4e6 
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.FixedSizeSet;
35import org.jf.dexlib2.iface.DexFile;
36
37import javax.annotation.Nonnull;
38import java.util.Set;
39
40public class DexBackedDexFile implements DexFile {
41    @Nonnull public final DexBuffer dexBuf;
42
43    public DexBackedDexFile(@Nonnull DexBuffer dexBuf) {
44        this.dexBuf = dexBuf;
45    }
46
47    @Nonnull
48    @Override
49    public Set<? extends DexBackedClassDef> getClasses() {
50        final int classCount = dexBuf.getClassCount();
51
52        return new FixedSizeSet<DexBackedClassDef>() {
53            @Nonnull
54            @Override
55            public DexBackedClassDef readItem(int index) {
56                int classOffset = dexBuf.getClassDefItemOffset(index);
57                return new DexBackedClassDef(dexBuf, classOffset);
58            }
59
60            @Override
61            public int size() {
62                return classCount;
63            }
64        };
65    }
66}
67