| /* |
| * Copyright 2014, Google Inc. |
| * All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions are |
| * met: |
| * |
| * * Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * * Redistributions in binary form must reproduce the above |
| * copyright notice, this list of conditions and the following disclaimer |
| * in the documentation and/or other materials provided with the |
| * distribution. |
| * * Neither the name of Google Inc. nor the names of its |
| * contributors may be used to endorse or promote products derived from |
| * this software without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| */ |
| |
| package org.jf.smalidea.dexlib.instruction; |
| |
| import com.google.common.collect.Lists; |
| import org.jf.dexlib2.Opcode; |
| import org.jf.dexlib2.iface.instruction.SwitchElement; |
| import org.jf.dexlib2.iface.instruction.formats.PackedSwitchPayload; |
| import org.jf.smalidea.psi.impl.*; |
| import org.jf.smalidea.util.InstructionUtils; |
| |
| import javax.annotation.Nonnull; |
| import java.util.List; |
| |
| public class SmalideaPackedSwitchPayload extends SmalideaInstruction implements PackedSwitchPayload { |
| public SmalideaPackedSwitchPayload(@Nonnull SmaliInstruction instruction) { |
| super(instruction); |
| } |
| |
| @Nonnull @Override public List<? extends SwitchElement> getSwitchElements() { |
| final SmaliLiteral startKey = psiInstruction.getPackedSwitchStartKey(); |
| assert startKey != null; |
| List<SmaliPackedSwitchElement> elements = psiInstruction.getPackedSwitchElements(); |
| |
| SmaliMethod smaliMethod = psiInstruction.getParentMethod(); |
| SmaliInstruction packedSwitchInstruction = InstructionUtils.findFirstInstructionWithTarget( |
| smaliMethod, Opcode.PACKED_SWITCH, psiInstruction.getOffset()); |
| final int baseOffset; |
| |
| if (packedSwitchInstruction == null) { |
| baseOffset = 0; |
| } else { |
| baseOffset = packedSwitchInstruction.getOffset(); |
| } |
| |
| List<SwitchElement> newElements = Lists.newArrayList(); |
| // TODO: check for integer wraparound (how does art/dalvik handle that?) |
| int initialKey = (int)startKey.getIntegralValue(); |
| for (int i=0; i<elements.size(); i++) { |
| final SmaliPackedSwitchElement element = elements.get(i); |
| |
| final int key = initialKey + i; |
| |
| newElements.add(new SwitchElement() { |
| @Override public int getKey() { |
| return key; |
| } |
| |
| @Override public int getOffset() { |
| SmaliLabelReference labelReference = element.getTarget(); |
| if (labelReference == null) { |
| return 0; |
| } |
| |
| SmaliLabel label = labelReference.resolve(); |
| if (label == null) { |
| return 0; |
| } |
| |
| return label.getOffset() - baseOffset; |
| } |
| }); |
| } |
| |
| return newElements; |
| } |
| |
| @Override public int getCodeUnits() { |
| return psiInstruction.getInstructionSize()/2; |
| } |
| } |