| /* |
| * ProGuard -- shrinking, optimization, obfuscation, and preverification |
| * of Java bytecode. |
| * |
| * Copyright (c) 2002-2014 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.info; |
| |
| import proguard.classfile.*; |
| import proguard.classfile.constant.*; |
| import proguard.classfile.constant.visitor.ConstantVisitor; |
| import proguard.classfile.util.SimplifiedVisitor; |
| import proguard.classfile.visitor.*; |
| |
| /** |
| * This ConstantVisitor marks all classes that refer to package visible classes |
| * or class members. |
| * |
| * @author Eric Lafortune |
| */ |
| public class PackageVisibleMemberInvokingClassMarker |
| extends SimplifiedVisitor |
| implements ConstantVisitor, |
| ClassVisitor, |
| MemberVisitor |
| { |
| private Clazz referencingClass; |
| |
| |
| // Implementations for ConstantVisitor. |
| |
| public void visitAnyConstant(Clazz clazz, Constant constant) {} |
| |
| |
| public void visitStringConstant(Clazz clazz, StringConstant stringConstant) |
| { |
| // Check the referenced class and class member, if any. |
| if (stringConstant.referencedClass != clazz) |
| { |
| referencingClass = clazz; |
| |
| stringConstant.referencedClassAccept(this); |
| stringConstant.referencedMemberAccept(this); |
| } |
| } |
| |
| |
| public void visitAnyRefConstant(Clazz clazz, RefConstant refConstant) |
| { |
| // Check the referenced class and class member. |
| if (refConstant.referencedClass != clazz) |
| { |
| referencingClass = clazz; |
| |
| refConstant.referencedClassAccept(this); |
| refConstant.referencedMemberAccept(this); |
| } |
| } |
| |
| |
| public void visitClassConstant(Clazz clazz, ClassConstant classConstant) |
| { |
| // Check the referenced class. |
| if (classConstant.referencedClass != clazz) |
| { |
| referencingClass = clazz; |
| |
| classConstant.referencedClassAccept(this); |
| } |
| } |
| |
| |
| // Implementations for ClassVisitor. |
| |
| public void visitAnyClass(Clazz clazz) |
| { |
| if ((clazz.getAccessFlags() & |
| ClassConstants.ACC_PUBLIC) == 0) |
| { |
| setInvokesPackageVisibleMembers(referencingClass); |
| } |
| } |
| |
| |
| // Implementations for MemberVisitor. |
| |
| public void visitAnyMember(Clazz clazz, Member member) |
| { |
| if ((member.getAccessFlags() & |
| (ClassConstants.ACC_PUBLIC | |
| ClassConstants.ACC_PRIVATE)) == 0) |
| { |
| setInvokesPackageVisibleMembers(referencingClass); |
| } |
| } |
| |
| |
| // Small utility methods. |
| |
| private static void setInvokesPackageVisibleMembers(Clazz clazz) |
| { |
| ClassOptimizationInfo info = ClassOptimizationInfo.getClassOptimizationInfo(clazz); |
| if (info != null) |
| { |
| info.setInvokesPackageVisibleMembers(); |
| } |
| } |
| |
| |
| public static boolean invokesPackageVisibleMembers(Clazz clazz) |
| { |
| ClassOptimizationInfo info = ClassOptimizationInfo.getClassOptimizationInfo(clazz); |
| return info == null || info.invokesPackageVisibleMembers(); |
| } |
| } |