SparseSwitchMethodItem.java revision db26b663aa3b5bb721185b8798b6767710d3c243
1/* 2 * [The "BSD licence"] 3 * Copyright (c) 2010 Ben Gruver (JesusFreke) 4 * All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 3. The name of the author may not be used to endorse or promote products 15 * derived from this software without specific prior written permission. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 19 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 20 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 22 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 25 * INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 27 */ 28 29package org.jf.baksmali.Adaptors.Format; 30 31import org.antlr.stringtemplate.StringTemplate; 32import org.antlr.stringtemplate.StringTemplateGroup; 33import org.jf.baksmali.Adaptors.MethodDefinition; 34import org.jf.dexlib.Code.Format.SparseSwitchDataPseudoInstruction; 35import org.jf.dexlib.CodeItem; 36import org.jf.baksmali.Adaptors.LabelMethodItem; 37 38import java.util.ArrayList; 39import java.util.Iterator; 40import java.util.List; 41 42public class SparseSwitchMethodItem extends InstructionMethodItem<SparseSwitchDataPseudoInstruction> 43 implements Iterable<LabelMethodItem> { 44 private final List<SparseSwitchTarget> targets; 45 private final boolean dead; 46 47 public SparseSwitchMethodItem(MethodDefinition methodDefinition, CodeItem codeItem, int codeAddress, boolean dead, 48 StringTemplateGroup stg, SparseSwitchDataPseudoInstruction instruction) { 49 super(codeItem, codeAddress, stg, instruction); 50 51 int baseCodeAddress = methodDefinition.getSparseSwitchBaseAddress(codeAddress); 52 53 targets = new ArrayList<SparseSwitchTarget>(); 54 Iterator<SparseSwitchDataPseudoInstruction.SparseSwitchTarget> iterator = instruction.iterateKeysAndTargets(); 55 while (iterator.hasNext()) { 56 SparseSwitchDataPseudoInstruction.SparseSwitchTarget target = iterator.next(); 57 SparseSwitchTarget sparseSwitchTarget = new SparseSwitchTarget(); 58 sparseSwitchTarget.Key = target.key; 59 60 LabelMethodItem label = new LabelMethodItem(baseCodeAddress + target.targetAddressOffset, stg, "sswitch_"); 61 label = methodDefinition.getLabelCache().internLabel(label); 62 sparseSwitchTarget.Target = label; 63 label.setUncommented(); 64 65 targets.add(sparseSwitchTarget); 66 } 67 68 this.dead = dead; 69 } 70 71 protected void setAttributes(StringTemplate template) { 72 template.setAttribute("Targets", targets); 73 template.setAttribute("Dead", dead); 74 } 75 76 public Iterator<LabelMethodItem> iterator() { 77 return new Iterator<LabelMethodItem>() { 78 private Iterator<SparseSwitchTarget> iterator = targets.iterator(); 79 80 public boolean hasNext() { 81 return iterator.hasNext(); 82 } 83 84 public LabelMethodItem next() { 85 return iterator.next().Target; 86 } 87 88 public void remove() { 89 iterator.remove(); 90 } 91 }; 92 } 93 94 private static class SparseSwitchTarget { 95 public int Key; 96 public LabelMethodItem Target; 97 } 98} 99