| /* |
| * Copyright 2013, 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.dexlib2.writer.builder; |
| |
| import com.google.common.collect.Maps; |
| import org.jf.dexlib2.writer.DexWriter; |
| import org.jf.dexlib2.writer.StringSection; |
| |
| import javax.annotation.Nonnull; |
| import javax.annotation.Nullable; |
| import java.util.Collection; |
| import java.util.Map.Entry; |
| import java.util.concurrent.ConcurrentMap; |
| |
| class BuilderStringPool implements StringSection<BuilderStringReference, BuilderStringReference> { |
| @Nonnull private final ConcurrentMap<String, BuilderStringReference> internedItems = Maps.newConcurrentMap(); |
| |
| @Nonnull BuilderStringReference internString(@Nonnull String string) { |
| BuilderStringReference ret = internedItems.get(string); |
| if (ret != null) { |
| return ret; |
| } |
| BuilderStringReference stringReference = new BuilderStringReference(string); |
| ret = internedItems.putIfAbsent(string, stringReference); |
| return ret==null?stringReference:ret; |
| } |
| |
| @Nullable BuilderStringReference internNullableString(@Nullable String string) { |
| if (string == null) { |
| return null; |
| } |
| return internString(string); |
| } |
| |
| @Override public int getNullableItemIndex(@Nullable BuilderStringReference key) { |
| return key==null?DexWriter.NO_INDEX:key.index; |
| } |
| |
| @Override public int getItemIndex(@Nonnull BuilderStringReference key) { |
| return key.index; |
| } |
| |
| @Override public boolean hasJumboIndexes() { |
| return internedItems.size() > 65536; |
| } |
| |
| @Nonnull @Override public Collection<? extends Entry<? extends BuilderStringReference, Integer>> getItems() { |
| return new BuilderMapEntryCollection<BuilderStringReference>(internedItems.values()) { |
| @Override protected int getValue(@Nonnull BuilderStringReference key) { |
| return key.index; |
| } |
| |
| @Override protected int setValue(@Nonnull BuilderStringReference key, int value) { |
| int prev = key.index; |
| key.index = value; |
| return prev; |
| } |
| }; |
| } |
| |
| @Override public int getItemCount() { |
| return internedItems.size(); |
| } |
| } |