1b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato/* 2b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato * ProGuard -- shrinking, optimization, obfuscation, and preverification 3b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato * of Java bytecode. 4b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato * 5b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato * Copyright (c) 2002-2009 Eric Lafortune (eric@graphics.cornell.edu) 6b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato * 7b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato * This program is free software; you can redistribute it and/or modify it 8b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato * under the terms of the GNU General Public License as published by the Free 9b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato * Software Foundation; either version 2 of the License, or (at your option) 10b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato * any later version. 11b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato * 12b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato * This program is distributed in the hope that it will be useful, but WITHOUT 13b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 14b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for 15b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato * more details. 16b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato * 17b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato * You should have received a copy of the GNU General Public License along 18b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato * with this program; if not, write to the Free Software Foundation, Inc., 19b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 20b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato */ 21b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onoratopackage proguard.optimize.peephole; 22b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato 23b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onoratoimport proguard.classfile.*; 24b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onoratoimport proguard.classfile.editor.MethodInvocationFixer; 25b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onoratoimport proguard.classfile.util.*; 26b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onoratoimport proguard.classfile.visitor.MemberVisitor; 27b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onoratoimport proguard.optimize.info.NonPrivateMemberMarker; 28b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato 29b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato/** 30b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato * This MemberVisitor makes all class members that it visits private, unless 31b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato * they have been marked by a NonPrivateMemberMarker. The invocations of 32b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato * privatized methods still have to be fixed. 33b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato * 34b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato * @see NonPrivateMemberMarker 35b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato * @see MethodInvocationFixer 36b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato * @author Eric Lafortune 37b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato */ 38b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onoratopublic class MemberPrivatizer 39b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onoratoextends SimplifiedVisitor 40b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onoratoimplements MemberVisitor 41b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato{ 42b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato private final MemberVisitor extraMemberVisitor; 43b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato 44b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato 45b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato /** 46b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato * Creates a new MemberPrivatizer. 47b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato */ 48b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato public MemberPrivatizer() 49b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato { 50b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato this(null); 51b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato } 52b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato 53b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato 54b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato /** 55b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato * Creates a new MemberPrivatizer. 56b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato * @param extraMemberVisitor an optional extra visitor for all privatized 57b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato * class members. 58b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato */ 59b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato public MemberPrivatizer(MemberVisitor extraMemberVisitor) 60b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato { 61b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato this.extraMemberVisitor = extraMemberVisitor; 62b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato } 63b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato 64b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato 65b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato // Implementations for MemberVisitor. 66b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato 67b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato public void visitProgramField(ProgramClass programClass, ProgramField programField) 68b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato { 69b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato // Is the field unmarked? 70b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato if (NonPrivateMemberMarker.canBeMadePrivate(programField)) 71b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato { 72b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato // Make the field private. 73b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato programField.u2accessFlags = 74b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato AccessUtil.replaceAccessFlags(programField.u2accessFlags, 75b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato ClassConstants.INTERNAL_ACC_PRIVATE); 76b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato 77b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato // Visit the field, if required. 78b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato if (extraMemberVisitor != null) 79b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato { 80b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato extraMemberVisitor.visitProgramField(programClass, programField); 81b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato } 82b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato } 83b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato } 84b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato 85b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato 86b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato public void visitProgramMethod(ProgramClass programClass, ProgramMethod programMethod) 87b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato { 88b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato // Is the method unmarked? 89b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato if (NonPrivateMemberMarker.canBeMadePrivate(programMethod)) 90b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato { 91b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato // Make the method private. 92b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato programMethod.u2accessFlags = 93b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato AccessUtil.replaceAccessFlags(programMethod.u2accessFlags, 94b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato ClassConstants.INTERNAL_ACC_PRIVATE); 95b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato 96b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato // Visit the method, if required. 97b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato if (extraMemberVisitor != null) 98b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato { 99b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato extraMemberVisitor.visitProgramMethod(programClass, programMethod); 100b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato } 101b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato } 102b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato } 103b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato} 104