TypeListItem.java revision cc3be5df1e6cf941ee3fab4a6f78a3c08922be59 
1/*
2 * Copyright 2013, 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.raw;
33
34import org.jf.dexlib2.dexbacked.DexBackedDexFile;
35import org.jf.dexlib2.util.AnnotatedBytes;
36
37import javax.annotation.Nonnull;
38
39public class TypeListItem {
40    public static final int SIZE_OFFSET = 0;
41    public static final int LIST_OFFSET = 4;
42
43    @Nonnull
44    public static SectionAnnotator getAnnotator() {
45        return new SectionAnnotator() {
46            @Nonnull @Override public String getItemName() {
47                return "type_list";
48            }
49
50            @Override
51            protected void annotateItem(@Nonnull AnnotatedBytes out, @Nonnull RawDexFile dexFile, int itemIndex) {
52                int size = dexFile.readSmallUint(out.getCursor());
53                out.annotate(4, "size: %d", size);
54
55                for (int i=0; i<size; i++) {
56                    int typeIndex = dexFile.readUshort(out.getCursor());
57                    out.annotate(2, TypeIdItem.getReferenceAnnotation(dexFile, typeIndex));
58                }
59            }
60
61            @Override public int getItemAlignment() {
62                return 4;
63            }
64        };
65    }
66
67    @Nonnull
68    public static String getReferenceAnnotation(@Nonnull DexBackedDexFile dexFile, int typeListOffset) {
69        if (typeListOffset == 0) {
70            return "0";
71        }
72
73        try {
74            String typeList = asString(dexFile, typeListOffset);
75            return String.format("type_list_item[0x%x]: %s", typeListOffset, typeList);
76        } catch (Exception ex) {
77            ex.printStackTrace(System.err);
78        }
79        return String.format("type_list_item[0x%x]", typeListOffset);
80    }
81
82    @Nonnull
83    public static String asString(@Nonnull DexBackedDexFile dexFile, int typeListOffset) {
84        if (typeListOffset == 0) {
85            return "";
86        }
87
88        StringBuilder sb = new StringBuilder();
89
90        int size = dexFile.readSmallUint(typeListOffset);
91        for (int i=0; i<size; i++) {
92            int typeIndex = dexFile.readUshort(typeListOffset + 4 + i*2);
93            String type = dexFile.getType(typeIndex);
94            sb.append(type);
95        }
96        return sb.toString();
97    }
98}
99