ImmutableDexFile.java revision b0383884fa44aa649cabb706325e922ee167c94a 
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.immutable;
33
34import com.google.common.collect.ImmutableList;
35import org.jf.dexlib2.iface.*;
36import org.jf.util.ImmutableListUtils;
37
38import javax.annotation.Nonnull;
39import javax.annotation.Nullable;
40import java.util.List;
41
42public class ImmutableDexFile implements DexFile {
43    @Nonnull public final ImmutableList<? extends ImmutableClassDef> classes;
44
45    public ImmutableDexFile(@Nullable List<? extends ClassDef> classes) {
46        this.classes = ImmutableClassDef.immutableListOf(classes);
47    }
48
49    public ImmutableDexFile(@Nullable ImmutableList<? extends ImmutableClassDef> classes) {
50        this.classes = ImmutableListUtils.nullToEmptyList(classes);
51    }
52
53    public static ImmutableDexFile of(DexFile dexFile) {
54        if (dexFile instanceof ImmutableDexFile) {
55            return (ImmutableDexFile)dexFile;
56        }
57        return new ImmutableDexFile(dexFile.getClasses());
58    }
59
60    @Nonnull @Override public List<? extends ClassDef> getClasses() { return classes; }
61}
62