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 32 package org.jf.dexlib2.immutable.instruction; 33 34 import org.jf.dexlib2.Format; 35 import org.jf.dexlib2.Opcode; 36 import org.jf.dexlib2.iface.instruction.formats.Instruction22t; 37 import org.jf.dexlib2.util.Preconditions; 38 39 import javax.annotation.Nonnull; 40 41 public class ImmutableInstruction22t extends ImmutableInstruction implements Instruction22t { 42 public static final Format FORMAT = Format.Format22t; 43 44 protected final int registerA; 45 protected final int registerB; 46 protected final int codeOffset; 47 48 public ImmutableInstruction22t(@Nonnull Opcode opcode, 49 int registerA, 50 int registerB, 51 int codeOffset) { 52 super(opcode); 53 this.registerA = Preconditions.checkNibbleRegister(registerA); 54 this.registerB = Preconditions.checkNibbleRegister(registerB); 55 this.codeOffset = Preconditions.checkShortCodeOffset(codeOffset); 56 } 57 58 public static ImmutableInstruction22t of(Instruction22t instruction) { 59 if (instruction instanceof ImmutableInstruction22t) { 60 return (ImmutableInstruction22t)instruction; 61 } 62 return new ImmutableInstruction22t( 63 instruction.getOpcode(), 64 instruction.getRegisterA(), 65 instruction.getRegisterB(), 66 instruction.getCodeOffset()); 67 } 68 69 @Override public int getRegisterA() { return registerA; } 70 @Override public int getRegisterB() { return registerB; } 71 @Override public int getCodeOffset() { return codeOffset; } 72 73 @Override public Format getFormat() { return FORMAT; } 74 } 75