content: /*
   * [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 java.util.ArrayList;
  
  import org.jf.dexlib.Util.ExceptionWithContext;
  import org.jf.dexlib.Util.Input;
  
  public class IndexedSection<T extends Item> extends Section<T> {
  
      /**
       * Create a new indexed section
       * @param dexFile The <code>DexFile</code> that this section belongs to
       * @param itemType The itemType that this section will hold
       */
      public IndexedSection(DexFile dexFile, ItemType itemType) {
          super(dexFile, itemType);
      }
  
      /** {@inheritDoc} */
      protected void readItems(Input in, ReadContext readContext) {
          ArrayList<T> items=this.items;
  
          for (int i = 0,len=items.size();i<len; i++) {
              T item = (T)ItemFactory.makeItem(ItemType, DexFile);
              items.set(i, item);
              item.readFrom(in, i, readContext);
          }
      }
  
      /**
       * Gets the item at the specified index in this section, or null if the index is -1
       * @param index the index of the item to get
       * @return the item at the specified index in this section, or null if the index is -1
       */
      public T getOptionalItemByIndex(int index) {
          if (index == -1) {
              return null;
          }
  
          return getItemByIndex(index);
      }
  
      /**
       * Gets the item at the specified index in this section
       * @param index the index of the item to get
       * @return the item at the specified index in this section
       */
      public T getItemByIndex(int index) {
          try {
              //if index is out of bounds, just let it throw an exception
              return items.get(index);
          } catch (Exception ex) {
              throw ExceptionWithContext.withContext(ex, "Error occured while retrieving the " + this.ItemType.TypeName +
                      " item at index " + index);
          }
      }
  }
  