operation.java

来自「linux下建立JAVA虚拟机的源码KAFFE」· Java 代码 · 共 90 行

/* Operation.java -- 
   Copyright (C) 2003, 2006 Free Software Foundation, Inc.

This file is a part of GNU Classpath.

GNU Classpath is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or (at
your option) any later version.

GNU Classpath 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
General Public License for more details.

You should have received a copy of the GNU General Public License
along with GNU Classpath; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301
USA

Linking this library statically or dynamically with other modules is
making a combined work based on this library.  Thus, the terms and
conditions of the GNU General Public License cover the whole
combination.

As a special exception, the copyright holders of this library give you
permission to link this library with independent modules to produce an
executable, regardless of the license terms of these independent
modules, and to copy and distribute the resulting executable under
terms of your choice, provided that you also meet, for each linked
independent module, the terms and conditions of the license of that
module.  An independent module is a module which is not derived from
or based on this library.  If you modify this library, you may extend
this exception to your version of the library, but you are not
obligated to do so.  If you do not wish to do so, delete this
exception statement from your version.  */


package gnu.javax.crypto.assembly;

/**
 * <p>An enumeration type for specifying the operation type of a
 * {@link Transformer}.</p>
 *
 * <p>The possible values for this type are two:</p>
 * <ol>
 *    <li>PRE_PROCESSING: where the input data is first processed by the
 *    current {@link Transformer} before being passed to the rest of the chain;
 *    and</li>
 *    <li>POST_PROCESSING: where the input data is first passed to the rest of
 *    the chain, and the resulting bytes are then processed by the current
 *    {@link Transformer}.</li>
 * </ol>
 *
 * @version $Revision: 1.1 $
 */
public final class Operation
{

  // Constants and variables
  // -------------------------------------------------------------------------

  public static final Operation PRE_PROCESSING = new Operation(1);

  public static final Operation POST_PROCESSING = new Operation(2);

  private int value;

  // Constructor(s)
  // -------------------------------------------------------------------------

  private Operation(int value)
  {
    super();

    this.value = value;
  }

  // Class methods
  // -------------------------------------------------------------------------

  // Instance methods
  // -------------------------------------------------------------------------

  public String toString()
  {
    return (this == PRE_PROCESSING ? "pre-processing" : "post-processing");
  }
}