| /* |
| * ProGuard -- shrinking, optimization, obfuscation, and preverification |
| * of Java bytecode. |
| * |
| * Copyright (c) 2002-2009 Eric Lafortune (eric@graphics.cornell.edu) |
| * |
| * This program is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License as published by the Free |
| * Software Foundation; either version 2 of the License, or (at your option) |
| * any later version. |
| * |
| * This program is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for |
| * more details. |
| * |
| * You should have received a copy of the GNU General Public License along |
| * with this program; if not, write to the Free Software Foundation, Inc., |
| * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| */ |
| package proguard.optimize; |
| |
| import proguard.classfile.*; |
| import proguard.classfile.util.SimplifiedVisitor; |
| import proguard.classfile.visitor.MemberVisitor; |
| import proguard.optimize.info.ReadWriteFieldMarker; |
| |
| /** |
| * This <code>MemberVisitor</code> delegates its visits to program fields to |
| * other given <code>MemberVisitor</code> instances, but only when the visited |
| * field has been marked as write-only. |
| * |
| * @see ReadWriteFieldMarker |
| * @author Eric Lafortune |
| */ |
| public class WriteOnlyFieldFilter |
| extends SimplifiedVisitor |
| implements MemberVisitor |
| { |
| private final MemberVisitor writeOnlyFieldVisitor; |
| |
| |
| /** |
| * Creates a new WriteOnlyFieldFilter. |
| * @param writeOnlyFieldVisitor the <code>MemberVisitor</code> to which |
| * visits to write-only fields will be delegated. |
| */ |
| public WriteOnlyFieldFilter(MemberVisitor writeOnlyFieldVisitor) |
| { |
| this.writeOnlyFieldVisitor = writeOnlyFieldVisitor; |
| } |
| |
| |
| // Implementations for MemberVisitor. |
| |
| public void visitProgramField(ProgramClass programClass, ProgramField programField) |
| { |
| |
| if (ReadWriteFieldMarker.isWritten(programField) && |
| !ReadWriteFieldMarker.isRead(programField)) |
| { |
| writeOnlyFieldVisitor.visitProgramField(programClass, programField); |
| } |
| } |
| } |