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Java > Open Source Codes > proguard > ant > ConfigurationElement


1 /*
2  * ProGuard -- shrinking, optimization, obfuscation, and preverification
3  * of Java bytecode.
4  *
5  * Copyright (c) 2002-2007 Eric Lafortune (eric@graphics.cornell.edu)
6  *
7  * This program is free software; you can redistribute it and/or modify it
8  * under the terms of the GNU General Public License as published by the Free
9  * Software Foundation; either version 2 of the License, or (at your option)
10  * any later version.
11  *
12  * This program is distributed in the hope that it will be useful, but WITHOUT
13  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
14  * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
15  * more details.
16  *
17  * You should have received a copy of the GNU General Public License along
18  * with this program; if not, write to the Free Software Foundation, Inc.,
19  * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
20  */
21 package proguard.ant;
22
23 import proguard.*;
24
25 import org.apache.tools.ant.*;
26 import org.apache.tools.ant.types.*;
27
28 import java.util.*;
29
30 import java.io.*;
31 import java.util.*;
32
33 /**
34  * This DataType represents a reference to a ProGuard configuration in Ant.
35  *
36  * @author Eric Lafortune
37  */
38 public class ConfigurationElement extends DataType
39 {
40     /**
41      * Adds the contents of this configuration task to the given configuration.
42      * @param configuration the configuration to be extended.
43      */
44     public void appendTo(Configuration configuration)
45     {
46         // Get the referenced element.
47 if (!isReference())
48         {
49             throw new BuildException("Nested element <configuration> must have a refid attribute");
50         }
51
52         ConfigurationTask configurationTask =
53             (ConfigurationTask)getCheckedRef(ConfigurationTask.class,
54                                              ConfigurationTask.class.getName());
55
56         // Append the referenced configuration entries to the given configuration.
57 configurationTask.appendTo(configuration);
58     }
59 }
60
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