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 32package org.jf.dexlib2.dexbacked.util; 33 34import org.jf.dexlib2.dexbacked.DexBackedDexFile; 35import org.jf.dexlib2.dexbacked.DexReader; 36 37import javax.annotation.Nonnull; 38import java.util.AbstractCollection; 39 40public abstract class VariableSizeCollection<T> extends AbstractCollection<T> { 41 @Nonnull private final DexBackedDexFile dexFile; 42 private final int offset; 43 private final int size; 44 45 public VariableSizeCollection(@Nonnull DexBackedDexFile dexFile, int offset, int size) { 46 this.dexFile = dexFile; 47 this.offset = offset; 48 this.size = size; 49 } 50 51 protected abstract T readNextItem(@Nonnull DexReader reader, int index); 52 53 @Override 54 @Nonnull 55 public VariableSizeIterator<T> iterator() { 56 return new VariableSizeIterator<T>(dexFile, offset, size) { 57 @Override 58 protected T readNextItem(@Nonnull DexReader reader, int index) { 59 return VariableSizeCollection.this.readNextItem(reader, index); 60 } 61 }; 62 } 63 64 @Override public int size() { return size; } 65} 66