| /* |
| $Id$ |
| |
| Copyright 2003 (C) James Strachan and Bob Mcwhirter. All Rights Reserved. |
| |
| Redistribution and use of this software and associated documentation |
| ("Software"), with or without modification, are permitted provided |
| that the following conditions are met: |
| |
| 1. Redistributions of source code must retain copyright |
| statements and notices. Redistributions must also contain a |
| copy of this document. |
| |
| 2. Redistributions in binary form must reproduce the |
| above copyright notice, this list of conditions and the |
| following disclaimer in the documentation and/or other |
| materials provided with the distribution. |
| |
| 3. The name "groovy" must not be used to endorse or promote |
| products derived from this Software without prior written |
| permission of The Codehaus. For written permission, |
| please contact info@codehaus.org. |
| |
| 4. Products derived from this Software may not be called "groovy" |
| nor may "groovy" appear in their names without prior written |
| permission of The Codehaus. "groovy" is a registered |
| trademark of The Codehaus. |
| |
| 5. Due credit should be given to The Codehaus - |
| http://groovy.codehaus.org/ |
| |
| THIS SOFTWARE IS PROVIDED BY THE CODEHAUS AND CONTRIBUTORS |
| ``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT |
| NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND |
| FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL |
| THE CODEHAUS OR ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, |
| INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES |
| (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR |
| SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, |
| STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
| ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED |
| OF THE POSSIBILITY OF SUCH DAMAGE. |
| |
| */ |
| package groovy.lang; |
| |
| import org.codehaus.groovy.runtime.InvokerHelper; |
| |
| /** |
| * Represents a reference to a value |
| * |
| * @author <a href="mailto:james@coredevelopers.net">James Strachan</a> |
| * @version $Revision$ |
| */ |
| public class Reference extends GroovyObjectSupport { |
| |
| private Object value; |
| |
| public Reference() { |
| } |
| |
| public Reference(Object value) { |
| this.value = value; |
| } |
| |
| public Object getProperty(String property) { |
| Object value = get(); |
| if (value != null) { |
| return InvokerHelper.getProperty(value, property); |
| } |
| return super.getProperty(property); |
| } |
| |
| public void setProperty(String property, Object newValue) { |
| Object value = get(); |
| if (value != null) { |
| InvokerHelper.setProperty(value, property, newValue); |
| } |
| else { |
| super.setProperty(property, newValue); |
| } |
| } |
| |
| public Object invokeMethod(String name, Object args) { |
| Object value = get(); |
| if (value != null) { |
| try { |
| return InvokerHelper.invokeMethod(value, name, args); |
| } |
| catch (Exception e) { |
| return super.invokeMethod(name, args); |
| } |
| } |
| else { |
| return super.invokeMethod(name, args); |
| } |
| } |
| |
| public Object get() { |
| return value; |
| } |
| |
| public void set(Object value) { |
| this.value = value; |
| } |
| } |