1/*
2 * [The "BSD licence"]
3 * Copyright (c) 2010 Ben Gruver (JesusFreke)
4 * All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 * 1. Redistributions of source code must retain the above copyright
10 *    notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 *    notice, this list of conditions and the following disclaimer in the
13 *    documentation and/or other materials provided with the distribution.
14 * 3. The name of the author may not be used to endorse or promote products
15 *    derived from this software without specific prior written permission.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
19 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
22 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 * INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 */
28
29package org.jf.baksmali.Adaptors.Format;
30
31import org.jf.baksmali.Adaptors.LabelMethodItem;
32import org.jf.baksmali.Adaptors.MethodDefinition;
33import org.jf.util.IndentingWriter;
34import org.jf.dexlib.Code.OffsetInstruction;
35import org.jf.dexlib.Code.Opcode;
36import org.jf.dexlib.CodeItem;
37
38import java.io.IOException;
39
40public class OffsetInstructionFormatMethodItem extends InstructionMethodItem<OffsetInstruction> {
41    protected LabelMethodItem label;
42
43    public OffsetInstructionFormatMethodItem(MethodDefinition.LabelCache labelCache, CodeItem codeItem, int codeAddress,
44                                             OffsetInstruction instruction) {
45        super(codeItem, codeAddress, instruction);
46
47        label = new LabelMethodItem(codeAddress + instruction.getTargetAddressOffset(), getLabelPrefix());
48        label = labelCache.internLabel(label);
49    }
50
51    @Override
52    protected void writeTargetLabel(IndentingWriter writer) throws IOException {
53        label.writeTo(writer);
54    }
55
56    public LabelMethodItem getLabel() {
57        return label;
58    }
59
60    private String getLabelPrefix() {
61        switch (instruction.getFormat()) {
62            case Format10t:
63            case Format20t:
64            case Format30t:
65                return "goto_";
66            case Format21t:
67            case Format22t:
68                return "cond_";
69            case Format31t:
70                if (instruction.opcode == Opcode.FILL_ARRAY_DATA) {
71                    return "array_";
72                }
73                if (instruction.opcode == Opcode.PACKED_SWITCH) {
74                    return "pswitch_data_";
75                }
76                assert instruction.opcode == Opcode.SPARSE_SWITCH;
77                return "sswitch_data_";
78        }
79
80        assert false;
81        return null;
82    }
83}
84