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      1 /*
      2  * ProGuard -- shrinking, optimization, obfuscation, and preverification
      3  *             of Java bytecode.
      4  *
      5  * Copyright (c) 2002-2014 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.editor;
     22 
     23 import proguard.classfile.*;
     24 import proguard.classfile.attribute.*;
     25 import proguard.classfile.attribute.visitor.AttributeVisitor;
     26 import proguard.classfile.util.SimplifiedVisitor;
     27 
     28 /**
     29  * This AttributeVisitor resets it CodeAttributeEditor whenever it visits a
     30  * code attribute.
     31  *
     32  * @author Eric Lafortune
     33  */
     34 public class CodeAttributeEditorResetter
     35 extends      SimplifiedVisitor
     36 implements   AttributeVisitor
     37 {
     38     private final CodeAttributeEditor codeAttributeEditor;
     39 
     40 
     41     /**
     42      * Creates a new CodeAttributeEditorResetter.
     43      * @param codeAttributeEditor the code attribute editor that will be reset.
     44      */
     45     public CodeAttributeEditorResetter(CodeAttributeEditor codeAttributeEditor)
     46     {
     47         this.codeAttributeEditor = codeAttributeEditor;
     48     }
     49 
     50 
     51     // Implementations for AttributeVisitor.
     52 
     53     public void visitAnyAttribute(Clazz clazz, Attribute attribute) {}
     54 
     55 
     56     public void visitCodeAttribute(Clazz clazz, Method method, CodeAttribute codeAttribute)
     57     {
     58         codeAttributeEditor.reset(codeAttribute.u4codeLength);
     59     }
     60 }
     61