001    /*
002     * $Id: ClassGenerator.java 3419 2006-01-19 00:07:02Z blackdrag $
003     *
004     * Copyright 2003 (C) James Strachan and Bob Mcwhirter. All Rights Reserved.
005     *
006     * Redistribution and use of this software and associated documentation
007     * ("Software"), with or without modification, are permitted provided that the
008     * following conditions are met: 1. Redistributions of source code must retain
009     * copyright statements and notices. Redistributions must also contain a copy
010     * of this document. 2. Redistributions in binary form must reproduce the above
011     * copyright notice, this list of conditions and the following disclaimer in
012     * the documentation and/or other materials provided with the distribution. 3.
013     * The name "groovy" must not be used to endorse or promote products derived
014     * from this Software without prior written permission of The Codehaus. For
015     * written permission, please contact info@codehaus.org. 4. Products derived
016     * from this Software may not be called "groovy" nor may "groovy" appear in
017     * their names without prior written permission of The Codehaus. "groovy" is a
018     * registered trademark of The Codehaus. 5. Due credit should be given to The
019     * Codehaus - http://groovy.codehaus.org/
020     *
021     * THIS SOFTWARE IS PROVIDED BY THE CODEHAUS AND CONTRIBUTORS ``AS IS'' AND ANY
022     * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
023     * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
024     * DISCLAIMED. IN NO EVENT SHALL THE CODEHAUS OR ITS CONTRIBUTORS BE LIABLE FOR
025     * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
026     * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
027     * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
028     * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
029     * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
030     * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
031     * DAMAGE.
032     *
033     */
034    package org.codehaus.groovy.classgen;
035    
036    import org.codehaus.groovy.ast.ClassCodeVisitorSupport;
037    import org.codehaus.groovy.control.SourceUnit;
038    import org.objectweb.asm.Opcodes;
039    
040    import java.util.LinkedList;
041    
042    /**
043     * Abstract base class for generator of Java class versions of Groovy AST classes
044     *
045     * @author <a href="mailto:jstrachan@protique.com">James Strachan</a>
046     * @author Russel Winder
047     * @version $Revision: 3419 $
048     */
049    public abstract class ClassGenerator extends ClassCodeVisitorSupport implements Opcodes {
050        protected ClassLoader classLoader;
051        // inner classes created while generating bytecode
052        protected LinkedList innerClasses = new LinkedList();
053    
054        public ClassGenerator(ClassLoader classLoader) {
055            this.classLoader = classLoader;
056        }
057        
058        public LinkedList getInnerClasses() {
059            return innerClasses;
060        }
061    
062        public ClassLoader getClassLoader() {
063            return classLoader;
064        }
065    
066      /**
067       *  A constant that is the ASM representation of the JDK version number for use in the
068       *  <code>ClassWriter.visitor</code> method calls.
069       *
070       *  <p>Prior to version 1.5 of ASM, the code generated was always JDK1.3 compliant.  As of ASM version
071       *  1.5 there is an extra (first) parameter to specify the bytecode version to generate.  In
072       *  version 1.5 these are in Constants.  The CVS (as at 2004.12.12) and presumably in version 2.0,
073       *  the interface Constants is replaced by Opcodes.</p>
074       */
075      public final static int asmJDKVersion = V1_3 ;
076      //  We can use V1_3 and not org.objectweb.asm.Opcodes.V1_3 because this abstract class
077      //  implements org.objectweb.asm.Opcodes so all its constants are available directly.
078      
079      
080      protected SourceUnit getSourceUnit() {
081          return null;
082      }
083    }