ImmutableInstruction23x.java revision e2f00f0eba79723388f2152db7b68c64872d7eb3 
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
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.immutable.instruction;
33
34import org.jf.dexlib2.Format;
35import org.jf.dexlib2.Opcode;
36import org.jf.dexlib2.iface.instruction.formats.Instruction23x;
37import org.jf.dexlib2.util.Preconditions;
38
39import javax.annotation.Nonnull;
40
41public class ImmutableInstruction23x extends ImmutableInstruction implements Instruction23x {
42    public static final Format FORMAT = Format.Format23x;
43
44    public final int registerA;
45    public final int registerB;
46    public final int registerC;
47
48    public ImmutableInstruction23x(@Nonnull Opcode opcode,
49                                   int registerA,
50                                   int registerB,
51                                   int registerC) {
52        super(opcode);
53        Preconditions.checkFormat(opcode, Format.Format35c);
54        this.registerA = Preconditions.checkByteRegister(registerA);
55        this.registerB = Preconditions.checkByteRegister(registerB);
56        this.registerC = Preconditions.checkByteRegister(registerC);
57    }
58
59    public static ImmutableInstruction23x of(Instruction23x instruction) {
60        if (instruction instanceof ImmutableInstruction23x) {
61            return (ImmutableInstruction23x)instruction;
62        }
63        return new ImmutableInstruction23x(
64                instruction.getOpcode(),
65                instruction.getRegisterA(),
66                instruction.getRegisterB(),
67                instruction.getRegisterC());
68    }
69
70    @Override public int getRegisterA() { return registerA; }
71    @Override public int getRegisterB() { return registerB; }
72    @Override public int getRegisterC() { return registerC; }
73
74    @Override public Format getFormat() { return FORMAT; }
75}
76