minwin-gcc-5-2/libjava/classpath/gnu/javax/crypto/assembly/Direction.java

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

This file is a part of GNU Classpath.

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it under the terms of the GNU General Public License as published by
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package gnu.javax.crypto.assembly;

/**
 * An enumeration type for wiring {@link Stage} instances into {@link Cascade}
 * Cipher chains, as well as for operating a {@link Cascade} in a given
 * direction.
 * <p>
 * The possible values for this type are two:
 * <ol>
 * <li>FORWARD: equivalent to {@link gnu.javax.crypto.mode.IMode#ENCRYPTION},
 * and its inverse value</li>
 * <li>REVERSED: equivalent to {@link gnu.javax.crypto.mode.IMode#DECRYPTION}.
 * </li>
 * </ol>
 */
public final class Direction
{
  public static final Direction FORWARD = new Direction(1);

  public static final Direction REVERSED = new Direction(2);

  private int value;

  private Direction(int value)
  {
    super();

    this.value = value;
  }

  public static final Direction reverse(Direction d)
  {
    return (d.equals(FORWARD) ? REVERSED : FORWARD);
  }

  public String toString()
  {
    return (this == FORWARD ? "forward" : "reversed");
  }
}