View Javadoc

1   /*
2    * $Id: ClassGenerator.java,v 1.189 2004/12/17 09:04:12 russel Exp $
3    *
4    * Copyright 2003 (C) James Strachan and Bob Mcwhirter. All Rights Reserved.
5    *
6    * Redistribution and use of this software and associated documentation
7    * ("Software"), with or without modification, are permitted provided that the
8    * following conditions are met: 1. Redistributions of source code must retain
9    * copyright statements and notices. Redistributions must also contain a copy
10   * of this document. 2. Redistributions in binary form must reproduce the above
11   * copyright notice, this list of conditions and the following disclaimer in
12   * the documentation and/or other materials provided with the distribution. 3.
13   * The name "groovy" must not be used to endorse or promote products derived
14   * from this Software without prior written permission of The Codehaus. For
15   * written permission, please contact info@codehaus.org. 4. Products derived
16   * from this Software may not be called "groovy" nor may "groovy" appear in
17   * their names without prior written permission of The Codehaus. "groovy" is a
18   * registered trademark of The Codehaus. 5. Due credit should be given to The
19   * Codehaus - http://groovy.codehaus.org/
20   *
21   * THIS SOFTWARE IS PROVIDED BY THE CODEHAUS AND CONTRIBUTORS ``AS IS'' AND ANY
22   * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
23   * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
24   * DISCLAIMED. IN NO EVENT SHALL THE CODEHAUS OR ITS CONTRIBUTORS BE LIABLE FOR
25   * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26   * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
27   * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
28   * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29   * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30   * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
31   * DAMAGE.
32   *
33   */
34  package org.codehaus.groovy.classgen;
35  
36  import org.codehaus.groovy.ast.CodeVisitorSupport;
37  import org.codehaus.groovy.ast.GroovyClassVisitor;
38  import org.objectweb.asm.Constants;
39  
40  import java.util.LinkedList;
41  
42  /***
43   * Abstract base class for generator of Java class versions of Groovy AST classes
44   *
45   * @author <a href="mailto:james@coredevelopers.net">James Strachan</a>
46   * @version $Revision: 1.189 $
47   */
48  public abstract class ClassGenerator extends CodeVisitorSupport implements GroovyClassVisitor, Constants {
49      protected ClassLoader classLoader;
50      // inner classes created while generating bytecode
51      protected LinkedList innerClasses = new LinkedList();
52  
53      public ClassGenerator(ClassLoader classLoader) {
54          this.classLoader = classLoader;
55      }
56      
57      public LinkedList getInnerClasses() {
58          return innerClasses;
59      }
60  
61      public ClassLoader getClassLoader() {
62          return classLoader;
63      }
64  
65    /***
66     *  A constant that is the ASM representation of the JDK version number for use in the
67     *  <code>ClassWriter.visitor</code> method calls.
68     *
69     *  <p>Prior to version 1.5 of ASM, the code generated was always JDK1.3 compliant.  As of ASM version
70     *  1.5 there is an extra (first) parameter to specify the bytecode version to generate.  In
71     *  version 1.5 these are in Constants.  The CVS (as at 2004.12.12) and presumably in version 2.0,
72     *  the interface Constants is replaced by Opcodes.</p>
73     *
74     *  @author Russel Winder
75     *  @version 2004.12.14
76     */
77    public final static int asmJDKVersion = V1_3 ;
78    //  We can use V1_3 and not org.objectweb.asm.Constants.V1_3 because this abstract class
79    //  implements org.objectweb.asm.Constants so all its constants are available directly.
80  }