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      1 /*
      2  * Copyright (C) 2007 The Android Open Source Project
      3  *
      4  * Licensed under the Apache License, Version 2.0 (the "License");
      5  * you may not use this file except in compliance with the License.
      6  * You may obtain a copy of the License at
      7  *
      8  *      http://www.apache.org/licenses/LICENSE-2.0
      9  *
     10  * Unless required by applicable law or agreed to in writing, software
     11  * distributed under the License is distributed on an "AS IS" BASIS,
     12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13  * See the License for the specific language governing permissions and
     14  * limitations under the License.
     15  */
     16 
     17 package com.android.dx.dex.file;
     18 
     19 import com.android.dex.DexException;
     20 import com.android.dex.DexFormat;
     21 import com.android.dx.command.dexer.Main;
     22 
     23 import java.util.Formatter;
     24 import java.util.Map;
     25 import java.util.TreeMap;
     26 import java.util.concurrent.atomic.AtomicInteger;
     27 
     28 /**
     29  * Member (field or method) refs list section of a {@code .dex} file.
     30  */
     31 public abstract class MemberIdsSection extends UniformItemSection {
     32 
     33     /**
     34      * Constructs an instance. The file offset is initially unknown.
     35      *
     36      * @param name {@code null-ok;} the name of this instance, for annotation
     37      * purposes
     38      * @param file {@code non-null;} file that this instance is part of
     39      */
     40     public MemberIdsSection(String name, DexFile file) {
     41         super(name, file, 4);
     42     }
     43 
     44     /** {@inheritDoc} */
     45     @Override
     46     protected void orderItems() {
     47         int idx = 0;
     48 
     49         if (items().size() > DexFormat.MAX_MEMBER_IDX + 1) {
     50             throw new DexException(getTooManyMembersMessage());
     51         }
     52 
     53         for (Object i : items()) {
     54             ((MemberIdItem) i).setIndex(idx);
     55             idx++;
     56         }
     57     }
     58 
     59     private String getTooManyMembersMessage() {
     60         Map<String, AtomicInteger> membersByPackage = new TreeMap<String, AtomicInteger>();
     61         for (Object member : items()) {
     62             String packageName = ((MemberIdItem) member).getDefiningClass().getPackageName();
     63             AtomicInteger count = membersByPackage.get(packageName);
     64             if (count == null) {
     65                 count = new AtomicInteger();
     66                 membersByPackage.put(packageName, count);
     67             }
     68             count.incrementAndGet();
     69         }
     70 
     71         Formatter formatter = new Formatter();
     72         try {
     73             String memberType = this instanceof MethodIdsSection ? "method" : "field";
     74             formatter.format("Too many %s references: %d; max is %d.%n" +
     75                     Main.getTooManyIdsErrorMessage() + "%n" +
     76                     "References by package:",
     77                     memberType, items().size(), DexFormat.MAX_MEMBER_IDX + 1);
     78             for (Map.Entry<String, AtomicInteger> entry : membersByPackage.entrySet()) {
     79                 formatter.format("%n%6d %s", entry.getValue().get(), entry.getKey());
     80             }
     81             return formatter.toString();
     82         } finally {
     83             formatter.close();
     84         }
     85     }
     86 
     87 }
     88