1be799799ff8bbc5d86f8cfdc850947ab4f41695fBen Gruver/* 2be799799ff8bbc5d86f8cfdc850947ab4f41695fBen Gruver * Copyright 2012, Google Inc. 3be799799ff8bbc5d86f8cfdc850947ab4f41695fBen Gruver * All rights reserved. 4be799799ff8bbc5d86f8cfdc850947ab4f41695fBen Gruver * 5be799799ff8bbc5d86f8cfdc850947ab4f41695fBen Gruver * Redistribution and use in source and binary forms, with or without 6be799799ff8bbc5d86f8cfdc850947ab4f41695fBen Gruver * modification, are permitted provided that the following conditions are 7be799799ff8bbc5d86f8cfdc850947ab4f41695fBen Gruver * met: 8be799799ff8bbc5d86f8cfdc850947ab4f41695fBen Gruver * 9be799799ff8bbc5d86f8cfdc850947ab4f41695fBen Gruver * * Redistributions of source code must retain the above copyright 10be799799ff8bbc5d86f8cfdc850947ab4f41695fBen Gruver * notice, this list of conditions and the following disclaimer. 11be799799ff8bbc5d86f8cfdc850947ab4f41695fBen Gruver * * Redistributions in binary form must reproduce the above 12be799799ff8bbc5d86f8cfdc850947ab4f41695fBen Gruver * copyright notice, this list of conditions and the following disclaimer 13be799799ff8bbc5d86f8cfdc850947ab4f41695fBen Gruver * in the documentation and/or other materials provided with the 14be799799ff8bbc5d86f8cfdc850947ab4f41695fBen Gruver * distribution. 15be799799ff8bbc5d86f8cfdc850947ab4f41695fBen Gruver * * Neither the name of Google Inc. nor the names of its 16be799799ff8bbc5d86f8cfdc850947ab4f41695fBen Gruver * contributors may be used to endorse or promote products derived from 17be799799ff8bbc5d86f8cfdc850947ab4f41695fBen Gruver * this software without specific prior written permission. 18be799799ff8bbc5d86f8cfdc850947ab4f41695fBen Gruver * 19be799799ff8bbc5d86f8cfdc850947ab4f41695fBen Gruver * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 20be799799ff8bbc5d86f8cfdc850947ab4f41695fBen Gruver * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 21be799799ff8bbc5d86f8cfdc850947ab4f41695fBen Gruver * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 22be799799ff8bbc5d86f8cfdc850947ab4f41695fBen Gruver * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 23be799799ff8bbc5d86f8cfdc850947ab4f41695fBen Gruver * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 24be799799ff8bbc5d86f8cfdc850947ab4f41695fBen Gruver * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 25be799799ff8bbc5d86f8cfdc850947ab4f41695fBen Gruver * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 26be799799ff8bbc5d86f8cfdc850947ab4f41695fBen Gruver * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 27be799799ff8bbc5d86f8cfdc850947ab4f41695fBen Gruver * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 28be799799ff8bbc5d86f8cfdc850947ab4f41695fBen Gruver * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 29be799799ff8bbc5d86f8cfdc850947ab4f41695fBen Gruver * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 30be799799ff8bbc5d86f8cfdc850947ab4f41695fBen Gruver */ 31be799799ff8bbc5d86f8cfdc850947ab4f41695fBen Gruver 32be799799ff8bbc5d86f8cfdc850947ab4f41695fBen Gruverpackage org.jf.dexlib2.dexbacked; 33be799799ff8bbc5d86f8cfdc850947ab4f41695fBen Gruver 345916df99999ae58f707d829792ef3997546628fdBen Gruverimport org.jf.dexlib2.base.BaseTryBlock; 35e8158c86efe5494fb5b369e096c7a857623a1b11Ben Gruverimport org.jf.dexlib2.dexbacked.raw.CodeItem; 3656c7adde039ecccf074bc42258c22ae006a33d0aIzzat Bahadirovimport org.jf.dexlib2.dexbacked.util.VariableSizeList; 37be799799ff8bbc5d86f8cfdc850947ab4f41695fBen Gruver 38be799799ff8bbc5d86f8cfdc850947ab4f41695fBen Gruverimport javax.annotation.Nonnull; 3956c7adde039ecccf074bc42258c22ae006a33d0aIzzat Bahadirovimport java.util.List; 40be799799ff8bbc5d86f8cfdc850947ab4f41695fBen Gruver 411bf6f2324541df184689fdb2c0d8188af5221784Ben Gruverpublic class DexBackedTryBlock extends BaseTryBlock<DexBackedExceptionHandler> { 4284c1762a62d7fc6638432c6c56e0422aa8cc6939Ben Gruver @Nonnull public final DexBackedDexFile dexFile; 43d1662b67fecaf835227aff3a136949a2358ccd4eBen Gruver private final int tryItemOffset; 44d1662b67fecaf835227aff3a136949a2358ccd4eBen Gruver private final int handlersStartOffset; 45be799799ff8bbc5d86f8cfdc850947ab4f41695fBen Gruver 4684c1762a62d7fc6638432c6c56e0422aa8cc6939Ben Gruver public DexBackedTryBlock(@Nonnull DexBackedDexFile dexFile, 475ec83fb0f01281f60123b206ccec7b2a453ead93Ben Gruver int tryItemOffset, 48ccc4c13ae6cf774126749a5ad8f45de0c08edbeeBen Gruver int handlersStartOffset) { 4984c1762a62d7fc6638432c6c56e0422aa8cc6939Ben Gruver this.dexFile = dexFile; 50d1662b67fecaf835227aff3a136949a2358ccd4eBen Gruver this.tryItemOffset = tryItemOffset; 51d1662b67fecaf835227aff3a136949a2358ccd4eBen Gruver this.handlersStartOffset = handlersStartOffset; 52be799799ff8bbc5d86f8cfdc850947ab4f41695fBen Gruver } 53be799799ff8bbc5d86f8cfdc850947ab4f41695fBen Gruver 54e8158c86efe5494fb5b369e096c7a857623a1b11Ben Gruver @Override public int getStartCodeAddress() { 55e8158c86efe5494fb5b369e096c7a857623a1b11Ben Gruver return dexFile.readSmallUint(tryItemOffset + CodeItem.TryItem.START_ADDRESS_OFFSET); 56e8158c86efe5494fb5b369e096c7a857623a1b11Ben Gruver } 57e8158c86efe5494fb5b369e096c7a857623a1b11Ben Gruver 58e8158c86efe5494fb5b369e096c7a857623a1b11Ben Gruver @Override public int getCodeUnitCount() { 59e8158c86efe5494fb5b369e096c7a857623a1b11Ben Gruver return dexFile.readUshort(tryItemOffset + CodeItem.TryItem.CODE_UNIT_COUNT_OFFSET); 60e8158c86efe5494fb5b369e096c7a857623a1b11Ben Gruver } 61be799799ff8bbc5d86f8cfdc850947ab4f41695fBen Gruver 62be799799ff8bbc5d86f8cfdc850947ab4f41695fBen Gruver @Nonnull 63be799799ff8bbc5d86f8cfdc850947ab4f41695fBen Gruver @Override 641bf6f2324541df184689fdb2c0d8188af5221784Ben Gruver public List<? extends DexBackedExceptionHandler> getExceptionHandlers() { 65e8158c86efe5494fb5b369e096c7a857623a1b11Ben Gruver DexReader reader = dexFile.readerAt( 66e8158c86efe5494fb5b369e096c7a857623a1b11Ben Gruver handlersStartOffset + dexFile.readUshort(tryItemOffset + CodeItem.TryItem.HANDLER_OFFSET)); 67be799799ff8bbc5d86f8cfdc850947ab4f41695fBen Gruver final int encodedSize = reader.readSleb128(); 68be799799ff8bbc5d86f8cfdc850947ab4f41695fBen Gruver 69be799799ff8bbc5d86f8cfdc850947ab4f41695fBen Gruver if (encodedSize > 0) { 70be799799ff8bbc5d86f8cfdc850947ab4f41695fBen Gruver //no catch-all 711bf6f2324541df184689fdb2c0d8188af5221784Ben Gruver return new VariableSizeList<DexBackedTypedExceptionHandler>(dexFile, reader.getOffset(), encodedSize) { 728daecd0246fb0d4eb29f53ab4ef99b506d395401Ben Gruver @Nonnull 73be799799ff8bbc5d86f8cfdc850947ab4f41695fBen Gruver @Override 741bf6f2324541df184689fdb2c0d8188af5221784Ben Gruver protected DexBackedTypedExceptionHandler readNextItem(@Nonnull DexReader reader, int index) { 751bf6f2324541df184689fdb2c0d8188af5221784Ben Gruver return new DexBackedTypedExceptionHandler(reader); 76be799799ff8bbc5d86f8cfdc850947ab4f41695fBen Gruver } 77be799799ff8bbc5d86f8cfdc850947ab4f41695fBen Gruver }; 78be799799ff8bbc5d86f8cfdc850947ab4f41695fBen Gruver } else { 79be799799ff8bbc5d86f8cfdc850947ab4f41695fBen Gruver //with catch-all 80be799799ff8bbc5d86f8cfdc850947ab4f41695fBen Gruver final int sizeWithCatchAll = (-1 * encodedSize) + 1; 811bf6f2324541df184689fdb2c0d8188af5221784Ben Gruver return new VariableSizeList<DexBackedExceptionHandler>(dexFile, reader.getOffset(), sizeWithCatchAll) { 828daecd0246fb0d4eb29f53ab4ef99b506d395401Ben Gruver @Nonnull 83be799799ff8bbc5d86f8cfdc850947ab4f41695fBen Gruver @Override 841bf6f2324541df184689fdb2c0d8188af5221784Ben Gruver protected DexBackedExceptionHandler readNextItem(@Nonnull DexReader dexReader, int index) { 85be799799ff8bbc5d86f8cfdc850947ab4f41695fBen Gruver if (index == sizeWithCatchAll-1) { 86ccc4c13ae6cf774126749a5ad8f45de0c08edbeeBen Gruver return new DexBackedCatchAllExceptionHandler(dexReader); 87be799799ff8bbc5d86f8cfdc850947ab4f41695fBen Gruver } else { 881bf6f2324541df184689fdb2c0d8188af5221784Ben Gruver return new DexBackedTypedExceptionHandler(dexReader); 89be799799ff8bbc5d86f8cfdc850947ab4f41695fBen Gruver } 90be799799ff8bbc5d86f8cfdc850947ab4f41695fBen Gruver } 91be799799ff8bbc5d86f8cfdc850947ab4f41695fBen Gruver }; 92be799799ff8bbc5d86f8cfdc850947ab4f41695fBen Gruver } 93be799799ff8bbc5d86f8cfdc850947ab4f41695fBen Gruver } 94be799799ff8bbc5d86f8cfdc850947ab4f41695fBen Gruver} 95