IndexedAccessor.java

/*
** Module   : IndexedAccessor.java
** Abstract : Accessor that stores the index of the requested array element.
**
** Copyright (c) 2017, Golden Code Development Corporation.
**
** -#- -I- --Date-- ---------------------------------Description---------------------------------
** 001 SVL 20170814 Initial version.
*/
/*
** This program is free software: you can redistribute it and/or modify
** it under the terms of the GNU Affero General Public License as
** published by the Free Software Foundation, either version 3 of the
** License, or (at your option) any later version.
**
** This program is distributed in the hope that it will be useful,
** but WITHOUT ANY WARRANTY; without even the implied warranty of
** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
** GNU Affero General Public License for more details.
**
** You may find a copy of the GNU Affero GPL version 3 at the following
** location: https://www.gnu.org/licenses/agpl-3.0.en.html
**
** Additional terms under GNU Affero GPL version 3 section 7:
**
**   Under Section 7 of the GNU Affero GPL version 3, the following additional
**   terms apply to the works covered under the License.  These additional terms
**   are non-permissive additional terms allowed under Section 7 of the GNU
**   Affero GPL version 3 and may not be removed by you.
**
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*/

package com.goldencode.p2j.util;

/**
 * Accessor that stores the index of the requested array element.
 */
public class IndexedAccessor
extends AccessorWrapper
{
   /** 0-based index of the requested array element. */
   final long index;

   /**
    * Creates the accessor for the given element of the given array.
    *
    * @param array
    *        Array to dereference.
    * @param index
    *        0-based index of the requested array element.
    */
   public IndexedAccessor(BaseDataType[] array, long index)
   {
      this(array, new int64(index));
   }

   /**
    * Creates the accessor for the given element of the given array.
    *
    * @param array
    *        Array to dereference.
    * @param index
    *        0-based index of the requested array element.
    */
   public IndexedAccessor(BaseDataType[] array, NumberType index)
   {
      super(ArrayAssigner.subscript(array, index));
      this.index = index.longValue() - 1;
   }

   /**
    * Get 0-based index of the requested array element.
    *
    * @return see above.
    */
   public long getIndex()
   {
      return index;
   }
}