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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.LineNumberInfoVisitor;
     26 
     27 /**
     28  * This LineNumberInfoVisitor adds all line numbers that it visits to the given
     29  * target line number attribute.
     30  */
     31 public class LineNumberInfoAdder
     32 implements   LineNumberInfoVisitor
     33 {
     34     private final LineNumberTableAttributeEditor lineNumberTableAttributeEditor;
     35 
     36 
     37     /**
     38      * Creates a new LineNumberInfoAdder that will copy line numbers into the
     39      * given target line number table.
     40      */
     41     public LineNumberInfoAdder(LineNumberTableAttribute targetLineNumberTableAttribute)
     42     {
     43         this.lineNumberTableAttributeEditor = new LineNumberTableAttributeEditor(targetLineNumberTableAttribute);
     44     }
     45 
     46 
     47     // Implementations for LineNumberInfoVisitor.
     48 
     49     public void visitLineNumberInfo(Clazz clazz, Method method, CodeAttribute codeAttribute, LineNumberInfo lineNumberInfo)
     50     {
     51         // Create a new line number.
     52         LineNumberInfo newLineNumberInfo =
     53             new LineNumberInfo(lineNumberInfo.u2startPC,
     54                                lineNumberInfo.u2lineNumber);
     55 
     56         // Add it to the target.
     57         lineNumberTableAttributeEditor.addLineNumberInfo(newLineNumberInfo);
     58     }
     59 }
     60