001/*
002 * Copyright (C) 2012 eXo Platform SAS.
003 *
004 * This is free software; you can redistribute it and/or modify it
005 * under the terms of the GNU Lesser General Public License as
006 * published by the Free Software Foundation; either version 2.1 of
007 * the License, or (at your option) any later version.
008 *
009 * This software is distributed in the hope that it will be useful,
010 * but WITHOUT ANY WARRANTY; without even the implied warranty of
011 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
012 * Lesser General Public License for more details.
013 *
014 * You should have received a copy of the GNU Lesser General Public
015 * License along with this software; if not, write to the Free
016 * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
017 * 02110-1301 USA, or see the FSF site: http://www.fsf.org.
018 */
019
020package org.crsh.cli.completers;
021
022import org.crsh.cli.descriptor.ParameterDescriptor;
023import org.crsh.cli.spi.Completer;
024import org.crsh.cli.spi.Completion;
025
026public class EmptyCompleter implements Completer {
027
028  /** . */
029  private static final EmptyCompleter instance = new EmptyCompleter();
030
031  /**
032   * Returns the empty completer instance.
033   *
034   * @return the instance
035   */
036  public static EmptyCompleter getInstance() {
037    return instance;
038  }
039
040  /**
041   * Returns the value returned by {@link java.util.Collections#emptyList()}.
042   */
043  public Completion complete(ParameterDescriptor parameter, String prefix) {
044    return Completion.create();
045  }
046}