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      1 /*
      2  * ProGuard -- shrinking, optimization, obfuscation, and preverification
      3  *             of Java bytecode.
      4  *
      5  * Copyright (c) 2002-2009 Eric Lafortune (eric (at) 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.classfile.visitor;
     22 
     23 import proguard.classfile.*;
     24 
     25 
     26 /**
     27  * This <code>ClassVisitor</code> lets a given <code>ClassVisitor</code>
     28  * travel to direct subclasses of the visited class.
     29  *
     30  * @author Eric Lafortune
     31  */
     32 public class SubclassTraveler implements ClassVisitor
     33 {
     34     private final ClassVisitor classVisitor;
     35 
     36 
     37     /**
     38      * Creates a new ClassHierarchyTraveler.
     39      * @param classVisitor    the <code>ClassVisitor</code> to
     40      *                        which visits will be delegated.
     41      */
     42     public SubclassTraveler(ClassVisitor classVisitor)
     43     {
     44         this.classVisitor = classVisitor;
     45     }
     46 
     47 
     48     // Implementations for ClassVisitor.
     49 
     50     public void visitProgramClass(ProgramClass programClass)
     51     {
     52         programClass.subclassesAccept(classVisitor);
     53     }
     54 
     55 
     56     public void visitLibraryClass(LibraryClass libraryClass)
     57     {
     58         libraryClass.subclassesAccept(classVisitor);
     59     }
     60 }