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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.Clazz;
     24 import proguard.classfile.constant.*;
     25 import proguard.classfile.constant.visitor.ConstantVisitor;
     26 import proguard.classfile.util.SimplifiedVisitor;
     27 
     28 
     29 /**
     30  * This ConstantVisitor lets a given <code>ClassVisitor</code> visit all
     31  * constant classes involved in any <code>Class.forName</code> constructs that
     32  * it visits.
     33  *
     34  * @see DotClassClassVisitor
     35  *
     36  * @author Eric Lafortune
     37  */
     38 public class ClassForNameClassVisitor
     39 extends      SimplifiedVisitor
     40 implements   ConstantVisitor
     41 {
     42     private final ClassVisitor classVisitor;
     43 
     44 
     45     /**
     46      * Creates a new ClassHierarchyTraveler.
     47      * @param classVisitor the <code>ClassVisitor</code> to which visits will
     48      *                     be delegated.
     49      */
     50     public ClassForNameClassVisitor(ClassVisitor classVisitor)
     51     {
     52         this.classVisitor = classVisitor;
     53     }
     54 
     55 
     56     // Implementations for ConstantVisitor.
     57 
     58     public void visitAnyConstant(Clazz clazz, Constant constant) {}
     59 
     60 
     61     public void visitStringConstant(Clazz clazz, StringConstant stringConstant)
     62     {
     63         // Visit the referenced class from the Class.forName construct, if any.
     64         stringConstant.referencedClassAccept(classVisitor);
     65     }
     66 }
     67