1 /* 2 * Copyright 2013, 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.writer.builder; 33 34 import com.google.common.base.Function; 35 import com.google.common.collect.ImmutableSet; 36 import com.google.common.collect.Iterators; 37 import com.google.common.collect.Maps; 38 import org.jf.dexlib2.iface.Annotation; 39 import org.jf.dexlib2.writer.AnnotationSetSection; 40 import org.jf.dexlib2.writer.DexWriter; 41 42 import javax.annotation.Nonnull; 43 import javax.annotation.Nullable; 44 import java.util.Collection; 45 import java.util.Map.Entry; 46 import java.util.Set; 47 import java.util.concurrent.ConcurrentMap; 48 49 class BuilderAnnotationSetPool extends BaseBuilderPool 50 implements AnnotationSetSection<BuilderAnnotation, BuilderAnnotationSet> { 51 @Nonnull private final ConcurrentMap<Set<? extends Annotation>, BuilderAnnotationSet> internedItems = 52 Maps.newConcurrentMap(); 53 BuilderAnnotationSetPool(@onnull DexBuilder dexBuilder)54 public BuilderAnnotationSetPool(@Nonnull DexBuilder dexBuilder) { 55 super(dexBuilder); 56 } 57 internAnnotationSet(@ullable Set<? extends Annotation> annotations)58 @Nonnull public BuilderAnnotationSet internAnnotationSet(@Nullable Set<? extends Annotation> annotations) { 59 if (annotations == null) { 60 return BuilderAnnotationSet.EMPTY; 61 } 62 63 BuilderAnnotationSet ret = internedItems.get(annotations); 64 if (ret != null) { 65 return ret; 66 } 67 68 BuilderAnnotationSet annotationSet = new BuilderAnnotationSet( 69 ImmutableSet.copyOf(Iterators.transform(annotations.iterator(), 70 new Function<Annotation, BuilderAnnotation>() { 71 @Nullable @Override public BuilderAnnotation apply(Annotation input) { 72 return dexBuilder.annotationSection.internAnnotation(input); 73 } 74 }))); 75 76 ret = internedItems.putIfAbsent(annotationSet, annotationSet); 77 return ret==null?annotationSet:ret; 78 } 79 80 @Nonnull @Override getAnnotations(@onnull BuilderAnnotationSet key)81 public Collection<? extends BuilderAnnotation> getAnnotations(@Nonnull BuilderAnnotationSet key) { 82 return key.annotations; 83 } 84 getNullableItemOffset(@ullable BuilderAnnotationSet key)85 @Override public int getNullableItemOffset(@Nullable BuilderAnnotationSet key) { 86 return key==null?DexWriter.NO_OFFSET:key.offset; 87 } 88 getItemOffset(@onnull BuilderAnnotationSet key)89 @Override public int getItemOffset(@Nonnull BuilderAnnotationSet key) { 90 return key.offset; 91 } 92 getItems()93 @Nonnull @Override public Collection<? extends Entry<? extends BuilderAnnotationSet, Integer>> getItems() { 94 return new BuilderMapEntryCollection<BuilderAnnotationSet>(internedItems.values()) { 95 @Override protected int getValue(@Nonnull BuilderAnnotationSet key) { 96 return key.offset; 97 } 98 99 @Override protected int setValue(@Nonnull BuilderAnnotationSet key, int value) { 100 int prev = key.offset; 101 key.offset = value; 102 return prev; 103 } 104 }; 105 } 106 } 107