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    package org.crsh.shell.impl.command;
020    
021    import org.crsh.command.InvocationContext;
022    
023    /**
024     * @author Julien Viet
025     */
026    public abstract class AbstractInvocationContext<P> implements InvocationContext<P> {
027    
028      /**
029       * Implement the <code><<</code> operator for Groovy.
030       *
031       * @param o the object
032       * @return this invocation context
033       * @throws Exception any exception
034       */
035      public final AbstractInvocationContext<P> leftShift(Object o) throws Exception {
036        Class<P> consumedType = getConsumedType();
037        if (consumedType.isInstance(o)) {
038          P p = consumedType.cast(o);
039          provide(p);
040        }
041        return this;
042      }
043    }