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 com.google.common.collect.ImmutableList; 35 import org.jf.dexlib2.iface.instruction.SwitchElement; 36 import org.jf.util.ImmutableConverter; 37 38 import javax.annotation.Nonnull; 39 import javax.annotation.Nullable; 40 import java.util.List; 41 42 public class ImmutableSwitchElement implements SwitchElement { 43 protected final int key; 44 protected final int offset; 45 ImmutableSwitchElement(int key, int offset)46 public ImmutableSwitchElement(int key, 47 int offset) { 48 this.key = key; 49 this.offset = offset; 50 } 51 52 @Nonnull of(SwitchElement switchElement)53 public static ImmutableSwitchElement of(SwitchElement switchElement) { 54 if (switchElement instanceof ImmutableSwitchElement) { 55 return (ImmutableSwitchElement)switchElement; 56 } 57 return new ImmutableSwitchElement( 58 switchElement.getKey(), 59 switchElement.getOffset()); 60 } 61 getKey()62 @Override public int getKey() { return key; } getOffset()63 @Override public int getOffset() { return offset; } 64 65 @Nonnull immutableListOf(@ullable List<? extends SwitchElement> list)66 public static ImmutableList<ImmutableSwitchElement> immutableListOf(@Nullable List<? extends SwitchElement> list) { 67 return CONVERTER.toList(list); 68 } 69 70 private static final ImmutableConverter<ImmutableSwitchElement, SwitchElement> CONVERTER = 71 new ImmutableConverter<ImmutableSwitchElement, SwitchElement>() { 72 @Override 73 protected boolean isImmutable(@Nonnull SwitchElement item) { 74 return item instanceof ImmutableSwitchElement; 75 } 76 77 @Nonnull 78 @Override 79 protected ImmutableSwitchElement makeImmutable(@Nonnull SwitchElement item) { 80 return ImmutableSwitchElement.of(item); 81 } 82 }; 83 } 84