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.baksmali.baksmaliOptions;
34import org.jf.dexlib2.Opcode;
35import org.jf.dexlib2.iface.instruction.OffsetInstruction;
36import org.jf.util.IndentingWriter;
37
38import javax.annotation.Nonnull;
39import java.io.IOException;
40
41public class OffsetInstructionFormatMethodItem extends InstructionMethodItem<OffsetInstruction> {
42    protected LabelMethodItem label;
43
44    public OffsetInstructionFormatMethodItem(@Nonnull baksmaliOptions options, @Nonnull MethodDefinition methodDef,
45                                             int codeAddress, OffsetInstruction instruction) {
46        super(methodDef, codeAddress, instruction);
47
48        label = new LabelMethodItem(options, codeAddress + instruction.getCodeOffset(), getLabelPrefix());
49        label = methodDef.getLabelCache().internLabel(label);
50    }
51
52    @Override
53    protected void writeTargetLabel(IndentingWriter writer) throws IOException {
54        label.writeTo(writer);
55    }
56
57    public LabelMethodItem getLabel() {
58        return label;
59    }
60
61    private String getLabelPrefix() {
62        Opcode opcode = instruction.getOpcode();
63        switch (opcode.format) {
64            case Format10t:
65            case Format20t:
66            case Format30t:
67                return "goto_";
68            case Format21t:
69            case Format22t:
70                return "cond_";
71            case Format31t:
72                if (opcode == Opcode.FILL_ARRAY_DATA) {
73                    return "array_";
74                }
75                if (opcode == Opcode.PACKED_SWITCH) {
76                    return "pswitch_data_";
77                }
78                // Opcode.SPARSE_SWITCH;
79                return "sswitch_data_";
80        }
81
82        assert false;
83        return null;
84    }
85}
86