Imported gcc-4.4.3

[msp430-gcc.git] / libjava / gnu / java / util / DoubleEnumeration.java

diff --git a/libjava/gnu/java/util/DoubleEnumeration.java b/libjava/gnu/java/util/DoubleEnumeration.java
deleted file mode 100644 (file)
index fd033a3..0000000
--- a/libjava/gnu/java/util/DoubleEnumeration.java
+++ /dev/null
@@ -1,139 +0,0 @@
-/* gnu.java.util.DoubleEnumeration
-   Copyright (C) 1998, 1999, 2001 Free Software Foundation, Inc.
-
-This file is 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, 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; see the file COPYING.  If not, write to the
-Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
-02111-1307 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.java.util;
-
-import java.io.*;
-import java.util.Enumeration;
-import java.util.NoSuchElementException;
-
-
-/**
- * This is a helper class that combines two Enumerations.
- * It returns the elements of the first Enumeration until it has
- * no more elements and then returns the elements of the second
- * Enumeration.<br>
- * 
- * In the default case:
- * <pre>
- * doubleEnum = new DoubleEnumeration(enum1, enum2);
- * while (doubleEnum.hasMoreElements()) {
- *    Object o = doubleEnum.nextElement();
- *    do_something(o);
- * }
- * </pre>
- * it calls hasMoreElements of the Enumerations as few times as
- * possible.
- * The references to the Enumerations are cleared as soon as they have no
- * more elements to help garbage collecting.
- *
- * @author Jochen Hoenicke
- * @author Mark Wielaard (mark@klomp.org)
- */
-public class DoubleEnumeration implements Enumeration
-{
-  /**
-   * This is true as long as one of the enumerations has more
-   * elements.  
-   * Only valid when hasChecked is true.
-   * Set in <code>hasMoreElements()</code>
-   */
-  private boolean hasMore;
-  /**
-   * This is true, if it is sure that hasMore indicates wether there are
-   * more elements.
-   * Set to true in <code>hasMoreElements()</code>.
-   * Set to false in <code>getNextElement()</code>.
-   */
-  private boolean hasChecked;
-  /**
-   * The first enumeration.
-   */
-  private Enumeration e1;
-  /**
-   * The second enumeration.
-   */
-  private Enumeration e2;
-
-  /**
-   * Creates a new Enumeration combining the given two enumerations.
-   * The enumerations mustn't be accessed by other classes.
-   */
-  public DoubleEnumeration(Enumeration e1, Enumeration e2)
-  {
-    this.e1 = e1;
-    this.e2 = e2;
-    hasChecked = false;
-  }
-
-  /**
-   * Returns true, if at least one of the two enumerations has more
-   * elements.
-   */
-  public boolean hasMoreElements()
-  {
-    if (hasChecked)
-      return hasMore;
-
-    hasMore = (e1 != null && e1.hasMoreElements());
-
-    if (!hasMore) {
-      e1 = e2;
-      e2 = null;
-      hasMore = (e1 != null && e1.hasMoreElements());
-    }
-
-    hasChecked = true;
-    return hasMore;
-  }
-
-  /**
-   * Returns the next element.  This returns the next element of the
-   * first enumeration, if it has more elements, otherwise the next
-   * element of the second enumeration. If both enumeration don't have
-   * any elements it throws a <code>NoSuchElementException</code>.
-   */
-  public Object nextElement()
-  {
-    if (!hasMoreElements())
-      throw new NoSuchElementException();
-    else {
-      hasChecked = false;
-      return e1.nextElement();
-    }
-  }
-}