ImmutableInstruction31t.java revision f97289cf3e7eea35906edb1d5caa0490fd0061e7 
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
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29 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
30 */
31
32package org.jf.dexlib2.immutable.instruction;
33
34import org.jf.dexlib2.Format;
35import org.jf.dexlib2.Opcode;
36import org.jf.dexlib2.iface.instruction.formats.Instruction31t;
37import org.jf.dexlib2.util.Preconditions;
38
39import javax.annotation.Nonnull;
40
41public class ImmutableInstruction31t extends ImmutableInstruction implements Instruction31t {
42    public static final Format FORMAT = Format.Format31t;
43
44    protected final int registerA;
45    protected final int codeOffset;
46
47    public ImmutableInstruction31t(@Nonnull Opcode opcode,
48                                   int registerA,
49                                   int codeOffset) {
50        super(opcode);
51        this.registerA = Preconditions.checkByteRegister(registerA);
52        this.codeOffset = codeOffset;
53    }
54
55    public static ImmutableInstruction31t of(Instruction31t instruction) {
56        if (instruction instanceof ImmutableInstruction31t) {
57            return (ImmutableInstruction31t)instruction;
58        }
59        return new ImmutableInstruction31t(
60                instruction.getOpcode(),
61                instruction.getRegisterA(),
62                instruction.getCodeOffset());
63    }
64
65    @Override public int getRegisterA() { return registerA; }
66    @Override public int getCodeOffset() { return codeOffset; }
67
68    @Override public Format getFormat() { return FORMAT; }
69}
70
71