| /* |
| * [The "BSD licence"] |
| * Copyright (c) 2010 Ben Gruver (JesusFreke) |
| * All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * 1. Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * 2. 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. |
| * 3. The name of the author may not be used to endorse or promote products |
| * derived from this software without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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.dexlib; |
| |
| import org.jf.dexlib.Util.AnnotatedOutput; |
| import org.jf.dexlib.Util.Input; |
| |
| import java.util.Arrays; |
| import java.util.Comparator; |
| import java.util.List; |
| |
| public class AnnotationSetItem extends Item<AnnotationSetItem> { |
| private int hashCode = 0; |
| |
| private AnnotationItem[] annotations; |
| |
| /** |
| * Creates a new uninitialized <code>AnnotationSetItem</code> |
| * @param dexFile The <code>DexFile</code> that this item belongs to |
| */ |
| protected AnnotationSetItem(DexFile dexFile) { |
| super(dexFile); |
| } |
| |
| /** |
| * Creates a new <code>AnnotationSetItem</code> for the given annotations |
| * @param dexFile The <code>DexFile</code> that this item belongs to |
| * @param annotations The annotations for this <code>AnnotationSetItem</code> |
| */ |
| private AnnotationSetItem(DexFile dexFile, AnnotationItem[] annotations) { |
| super(dexFile); |
| this.annotations = annotations; |
| } |
| |
| /** |
| * Returns an <code>AnnotationSetItem</code> for the given annotations, and that has been interned into the given |
| * <code>DexFile</code> |
| * @param dexFile The <code>DexFile</code> that this item belongs to |
| * @param annotations The annotations for this <code>AnnotationSetItem</code> |
| * @return an <code>AnnotationSetItem</code> for the given annotations |
| */ |
| public static AnnotationSetItem internAnnotationSetItem(DexFile dexFile, List<AnnotationItem> annotations) { |
| AnnotationSetItem annotationSetItem; |
| if (annotations == null) { |
| annotationSetItem = new AnnotationSetItem(dexFile, new AnnotationItem[0]); |
| } else { |
| AnnotationItem[] annotationsArray = new AnnotationItem[annotations.size()]; |
| annotations.toArray(annotationsArray); |
| annotationSetItem = new AnnotationSetItem(dexFile, annotationsArray); |
| } |
| return dexFile.AnnotationSetsSection.intern(annotationSetItem); |
| } |
| |
| /** {@inheritDoc} */ |
| protected void readItem(Input in, ReadContext readContext) { |
| annotations = new AnnotationItem[in.readInt()]; |
| |
| for (int i=0; i<annotations.length; i++) { |
| annotations[i] = (AnnotationItem)readContext.getOffsettedItemByOffset(ItemType.TYPE_ANNOTATION_ITEM, |
| in.readInt()); |
| } |
| } |
| |
| /** {@inheritDoc} */ |
| protected int placeItem(int offset) { |
| return offset + 4 + annotations.length * 4; |
| } |
| |
| /** {@inheritDoc} */ |
| protected void writeItem(AnnotatedOutput out) { |
| Arrays.sort(annotations, new Comparator<AnnotationItem>() { |
| public int compare(AnnotationItem annotationItem, AnnotationItem annotationItem2) { |
| int annotationItemIndex = annotationItem.getEncodedAnnotation().annotationType.getIndex(); |
| int annotationItemIndex2 = annotationItem2.getEncodedAnnotation().annotationType.getIndex(); |
| if (annotationItemIndex < annotationItemIndex2) { |
| return -1; |
| } else if (annotationItemIndex == annotationItemIndex2) { |
| return 0; |
| } |
| return 1; |
| } |
| }); |
| |
| |
| if (out.annotates()) { |
| out.annotate(4, "size: 0x" + Integer.toHexString(annotations.length) + " (" + annotations.length + ")"); |
| for (AnnotationItem annotationItem: annotations) { |
| out.annotate(4, "annotation_off: 0x" + Integer.toHexString(annotationItem.getOffset()) + " - " + |
| annotationItem.getEncodedAnnotation().annotationType.getTypeDescriptor()); |
| } |
| } |
| out.writeInt(annotations.length); |
| for (AnnotationItem annotationItem: annotations) { |
| out.writeInt(annotationItem.getOffset()); |
| } |
| } |
| |
| /** {@inheritDoc} */ |
| public ItemType getItemType() { |
| return ItemType.TYPE_ANNOTATION_SET_ITEM; |
| } |
| |
| /** {@inheritDoc} */ |
| public String getConciseIdentity() { |
| return "annotation_set_item @0x" + Integer.toHexString(getOffset()); |
| } |
| |
| /** {@inheritDoc} */ |
| public int compareTo(AnnotationSetItem o) { |
| if (o == null) { |
| return 1; |
| } |
| |
| int comp = annotations.length - o.annotations.length; |
| if (comp == 0) { |
| for (int i=0; i<annotations.length; i++) { |
| comp = annotations[i].compareTo(o.annotations[i]); |
| if (comp != 0) { |
| return comp; |
| } |
| } |
| } |
| return comp; |
| } |
| |
| /** |
| * @return An array of the <code>AnnotationItem</code> objects in this <code>AnnotationSetItem</code> |
| */ |
| public AnnotationItem[] getAnnotations() { |
| return annotations; |
| } |
| |
| /** |
| * calculate and cache the hashcode |
| */ |
| private void calcHashCode() { |
| hashCode = 0; |
| for (AnnotationItem annotationItem: annotations) { |
| hashCode = hashCode * 31 + annotationItem.hashCode(); |
| } |
| } |
| |
| @Override |
| public int hashCode() { |
| //there's a small possibility that the actual hash code will be 0. If so, we'll |
| //just end up recalculating it each time |
| if (hashCode == 0) |
| calcHashCode(); |
| return hashCode; |
| } |
| |
| @Override |
| public boolean equals(Object o) { |
| if (this==o) { |
| return true; |
| } |
| if (o==null || !this.getClass().equals(o.getClass())) { |
| return false; |
| } |
| |
| AnnotationSetItem other = (AnnotationSetItem)o; |
| return (this.compareTo(other) == 0); |
| } |
| } |