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.dexbacked.raw.util.DexAnnotator;
36import org.jf.dexlib2.util.AnnotatedBytes;
37
38import javax.annotation.Nonnull;
39import javax.annotation.Nullable;
40
41public class TypeListItem {
42    public static final int SIZE_OFFSET = 0;
43    public static final int LIST_OFFSET = 4;
44
45    @Nonnull
46    public static SectionAnnotator makeAnnotator(@Nonnull DexAnnotator annotator, @Nonnull MapItem mapItem) {
47        return new SectionAnnotator(annotator, mapItem) {
48            @Nonnull @Override public String getItemName() {
49                return "type_list";
50            }
51
52            @Override
53            protected void annotateItem(@Nonnull AnnotatedBytes out, int itemIndex, @Nullable String itemIdentity) {
54                int size = dexFile.readSmallUint(out.getCursor());
55                out.annotate(4, "size: %d", size);
56
57                for (int i=0; i<size; i++) {
58                    int typeIndex = dexFile.readUshort(out.getCursor());
59                    out.annotate(2, TypeIdItem.getReferenceAnnotation(dexFile, typeIndex));
60                }
61            }
62
63            @Override public int getItemAlignment() {
64                return 4;
65            }
66        };
67    }
68
69    @Nonnull
70    public static String getReferenceAnnotation(@Nonnull DexBackedDexFile dexFile, int typeListOffset) {
71        if (typeListOffset == 0) {
72            return "type_list_item[NO_OFFSET]";
73        }
74
75        try {
76            String typeList = asString(dexFile, typeListOffset);
77            return String.format("type_list_item[0x%x]: %s", typeListOffset, typeList);
78        } catch (Exception ex) {
79            ex.printStackTrace(System.err);
80        }
81        return String.format("type_list_item[0x%x]", typeListOffset);
82    }
83
84    @Nonnull
85    public static String asString(@Nonnull DexBackedDexFile dexFile, int typeListOffset) {
86        if (typeListOffset == 0) {
87            return "";
88        }
89
90        StringBuilder sb = new StringBuilder();
91
92        int size = dexFile.readSmallUint(typeListOffset);
93        for (int i=0; i<size; i++) {
94            int typeIndex = dexFile.readUshort(typeListOffset + 4 + i*2);
95            String type = dexFile.getType(typeIndex);
96            sb.append(type);
97        }
98        return sb.toString();
99    }
100}
101