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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;
     22 
     23 import proguard.classfile.util.*;
     24 import proguard.classfile.visitor.ClassVisitor;
     25 
     26 import java.util.List;
     27 
     28 /**
     29  * This class checks if the user has forgotten to specify class members in
     30  * some keep options in the configuration.
     31  *
     32  * @author Eric Lafortune
     33  */
     34 public class KeepClassMemberChecker
     35 {
     36     private final WarningPrinter notePrinter;
     37 
     38 
     39     /**
     40      * Creates a new KeepClassMemberChecker.
     41      */
     42     public KeepClassMemberChecker(WarningPrinter notePrinter)
     43     {
     44         this.notePrinter = notePrinter;
     45     }
     46 
     47 
     48     /**
     49      * Checks if the given class specifications try to keep class members
     50      * without actually specifying any, printing notes if necessary.
     51      */
     52     public void checkClassSpecifications(List keepClassSpecifications)
     53     {
     54         if (keepClassSpecifications != null)
     55         {
     56             for (int index = 0; index < keepClassSpecifications.size(); index++)
     57             {
     58                 KeepClassSpecification keepClassSpecification =
     59                     (KeepClassSpecification)keepClassSpecifications.get(index);
     60 
     61                 if (!keepClassSpecification.markClasses                      &&
     62                     (keepClassSpecification.fieldSpecifications  == null ||
     63                      keepClassSpecification.fieldSpecifications.size() == 0) &&
     64                     (keepClassSpecification.methodSpecifications == null ||
     65                      keepClassSpecification.methodSpecifications.size() == 0))
     66                 {
     67                     String className = keepClassSpecification.className;
     68                     if (className == null)
     69                     {
     70                         className = keepClassSpecification.extendsClassName;
     71                     }
     72 
     73                     if (className == null ||
     74                         notePrinter.accepts(className))
     75                     {
     76                         notePrinter.print(className,
     77                                           "Note: the configuration doesn't specify which class members to keep for class '" +
     78                                           (className == null ?
     79                                               ConfigurationConstants.ANY_CLASS_KEYWORD :
     80                                               ClassUtil.externalClassName(className)) + "'");
     81                     }
     82                 }
     83             }
     84         }
     85     }
     86 }
     87