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.Instruction22c;
37import org.jf.dexlib2.iface.reference.Reference;
38import org.jf.dexlib2.immutable.reference.ImmutableReference;
39import org.jf.dexlib2.immutable.reference.ImmutableReferenceFactory;
40import org.jf.dexlib2.util.Preconditions;
41
42import javax.annotation.Nonnull;
43
44public class ImmutableInstruction22c extends ImmutableInstruction implements Instruction22c {
45    public static final Format FORMAT = Format.Format22c;
46
47    protected final int registerA;
48    protected final int registerB;
49    @Nonnull protected final ImmutableReference reference;
50
51    public ImmutableInstruction22c(@Nonnull Opcode opcode,
52                                   int registerA,
53                                   int registerB,
54                                   @Nonnull Reference reference) {
55        super(opcode);
56        this.registerA = Preconditions.checkNibbleRegister(registerA);
57        this.registerB = Preconditions.checkNibbleRegister(registerB);
58        this.reference = ImmutableReferenceFactory.of(opcode.referenceType, reference);
59    }
60
61    public static ImmutableInstruction22c of(Instruction22c instruction) {
62        if (instruction instanceof ImmutableInstruction22c) {
63            return (ImmutableInstruction22c)instruction;
64        }
65        return new ImmutableInstruction22c(
66                instruction.getOpcode(),
67                instruction.getRegisterA(),
68                instruction.getRegisterB(),
69                instruction.getReference());
70    }
71
72    @Override public int getRegisterA() { return registerA; }
73    @Override public int getRegisterB() { return registerB; }
74    @Nonnull @Override public ImmutableReference getReference() { return reference; }
75    @Override public int getReferenceType() { return opcode.referenceType; }
76
77    @Override public Format getFormat() { return FORMAT; }
78}