content: /*
   * Copyright (C) 2008 The Android Open Source Project
   *
   * Licensed under the Apache License, Version 2.0 (the "License");
   * you may not use this file except in compliance with the License.
   * You may obtain a copy of the License at
   *
   *      http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   */
  
  package com.taobao.android.dx.dex.file;
  
  import com.taobao.android.dx.rop.cst.CstArray;
  import com.taobao.android.dx.util.AnnotatedOutput;
  import com.taobao.android.dx.util.ByteArrayAnnotatedOutput;
  
  /**
   * Encoded array of constant values.
   */
  public final class EncodedArrayItem extends OffsettedItem {
      /** the required alignment for instances of this class */
      private static final int ALIGNMENT = 1;
  
      /** {@code non-null;} the array to represent */
      private final CstArray array;
  
      /**
       * {@code null-ok;} encoded form, ready for writing to a file; set during
       * {@link #place0}
       */
      private byte[] encodedForm;
  
      /**
       * Constructs an instance.
       *
       * @param array {@code non-null;} array to represent
       */
      public EncodedArrayItem(CstArray array) {
          /*
           * The write size isn't known up-front because (the variable-lengthed)
           * leb128 type is used to represent some things.
           */
          super(ALIGNMENT, -1);
  
          if (array == null) {
              throw new NullPointerException("array == null");
          }
  
          this.array = array;
          this.encodedForm = null;
      }
  
      /** {@inheritDoc} */
      @Override
      public ItemType itemType() {
          return ItemType.TYPE_ENCODED_ARRAY_ITEM;
      }
  
      /** {@inheritDoc} */
      @Override
      public int hashCode() {
          return array.hashCode();
      }
  
      /** {@inheritDoc} */
      @Override
      protected int compareTo0(OffsettedItem other) {
          EncodedArrayItem otherArray = (EncodedArrayItem) other;
  
          return array.compareTo(otherArray.array);
      }
  
      /** {@inheritDoc} */
      @Override
      public String toHuman() {
          return array.toHuman();
      }
  
      /** {@inheritDoc} */
      public void addContents(DexFile file) {
          ValueEncoder.addContents(file, array);
      }
  
      /** {@inheritDoc} */
      @Override
      protected void place0(Section addedTo, int offset) {
          // Encode the data and note the size.
  
          ByteArrayAnnotatedOutput out = new ByteArrayAnnotatedOutput();
          ValueEncoder encoder = new ValueEncoder(addedTo.getFile(), out);
  
          encoder.writeArray(array, false);
          encodedForm = out.toByteArray();
          setWriteSize(encodedForm.length);
      }
  
      /** {@inheritDoc} */
      @Override
      protected void writeTo0(DexFile file, AnnotatedOutput out) {
          boolean annotates = out.annotates();
  
          if (annotates) {
              out.annotate(0, offsetString() + " encoded array");
  
              /*
               * The output is to be annotated, so redo the work previously
               * done by place0(), except this time annotations will actually
               * get emitted.
               */
              ValueEncoder encoder = new ValueEncoder(file, out);
              encoder.writeArray(array, true);
          } else {
              out.write(encodedForm);
          }
      }
  }
  