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 */
019package org.crsh.lang.impl.groovy.closure;
020
021import groovy.lang.GroovyObjectSupport;
022import org.codehaus.groovy.runtime.InvokerHelper;
023import org.crsh.command.CommandContext;
024import org.crsh.lang.impl.groovy.Helper;
025import org.crsh.shell.impl.command.InvocationContextImpl;
026import org.crsh.util.SafeCallable;
027
028/** @author Julien Viet */
029class ClosureDelegate extends GroovyObjectSupport {
030
031  /** . */
032  private final CommandContext context;
033
034  /** . */
035  private final Object owner;
036
037  public ClosureDelegate(CommandContext context, Object owner) {
038    this.context = context;
039    this.owner = owner;
040  }
041
042  public CommandContext getContext() {
043    return context;
044  }
045
046  @Override
047  public Object getProperty(String property) {
048    if ("context".equals(property)) {
049      return context;
050    } else {
051      Object value = Helper.resolveProperty(new InvocationContextImpl(context), property);
052      if (value != null) {
053        return value;
054      } else {
055        value = InvokerHelper.getProperty(owner, property);
056      }
057      return value;
058    }
059  }
060
061  @Override
062  public Object invokeMethod(String name, Object args) {
063    SafeCallable runnable = Helper.resolveMethodInvocation(new InvocationContextImpl(context), name, args);
064    if (runnable != null) {
065      return runnable.call();
066    } else {
067      return InvokerHelper.invokeMethod(owner, name, args);
068    }
069  }
070}