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Diffstat (limited to 'src/proguard/obfuscate/NameMarker.java')
-rw-r--r-- | src/proguard/obfuscate/NameMarker.java | 166 |
1 files changed, 166 insertions, 0 deletions
diff --git a/src/proguard/obfuscate/NameMarker.java b/src/proguard/obfuscate/NameMarker.java new file mode 100644 index 0000000..2ce0ee9 --- /dev/null +++ b/src/proguard/obfuscate/NameMarker.java @@ -0,0 +1,166 @@ +/* + * 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.obfuscate; + +import proguard.classfile.*; +import proguard.classfile.util.SimplifiedVisitor; +import proguard.classfile.constant.ClassConstant; +import proguard.classfile.constant.visitor.ConstantVisitor; +import proguard.classfile.attribute.*; +import proguard.classfile.attribute.visitor.*; +import proguard.classfile.visitor.*; + + +/** + * This <code>ClassVisitor</code> and <code>MemberVisitor</code> + * marks names of the classes and class members it visits. The marked names + * will remain unchanged in the obfuscation step. + * + * @see ClassObfuscator + * @see MemberObfuscator + * + * @author Eric Lafortune + */ +class NameMarker +extends SimplifiedVisitor +implements ClassVisitor, + MemberVisitor, + AttributeVisitor, + InnerClassesInfoVisitor, + ConstantVisitor +{ + // Implementations for ClassVisitor. + + public void visitProgramClass(ProgramClass programClass) + { + keepClassName(programClass); + + // Make sure any outer class names are kept as well. + programClass.attributesAccept(this); + } + + + public void visitLibraryClass(LibraryClass libraryClass) + { + keepClassName(libraryClass); + } + + + // Implementations for MemberVisitor. + + public void visitProgramField(ProgramClass programClass, ProgramField programField) + { + keepFieldName(programClass, programField); + } + + + public void visitProgramMethod(ProgramClass programClass, ProgramMethod programMethod) + { + keepMethodName(programClass, programMethod); + } + + + public void visitLibraryField(LibraryClass libraryClass, LibraryField libraryField) + { + keepFieldName(libraryClass, libraryField); + } + + + public void visitLibraryMethod(LibraryClass libraryClass, LibraryMethod libraryMethod) + { + keepMethodName(libraryClass, libraryMethod); + } + + + // Implementations for AttributeVisitor. + + public void visitAnyAttribute(Clazz clazz, Attribute attribute) {} + + + public void visitInnerClassesAttribute(Clazz clazz, InnerClassesAttribute innerClassesAttribute) + { + // Make sure the outer class names are kept as well. + innerClassesAttribute.innerClassEntriesAccept(clazz, this); + } + + + // Implementations for InnerClassesInfoVisitor. + + public void visitInnerClassesInfo(Clazz clazz, InnerClassesInfo innerClassesInfo) + { + // Make sure the outer class name is kept as well. + int innerClassIndex = innerClassesInfo.u2innerClassIndex; + int outerClassIndex = innerClassesInfo.u2outerClassIndex; + if (innerClassIndex != 0 && + outerClassIndex != 0 && + clazz.getClassName(innerClassIndex).equals(clazz.getName())) + { + clazz.constantPoolEntryAccept(outerClassIndex, this); + } + } + + + // Implementations for ConstantVisitor. + + public void visitClassConstant(Clazz clazz, ClassConstant classConstant) + { + // Make sure the outer class name is kept as well. + classConstant.referencedClassAccept(this); + } + + + // Small utility method. + + /** + * Ensures the name of the given class name will be kept. + */ + public void keepClassName(Clazz clazz) + { + ClassObfuscator.setNewClassName(clazz, + clazz.getName()); + } + + + /** + * Ensures the name of the given field name will be kept. + */ + private void keepFieldName(Clazz clazz, Field field) + { + MemberObfuscator.setFixedNewMemberName(field, + field.getName(clazz)); + } + + + /** + * Ensures the name of the given method name will be kept. + */ + private void keepMethodName(Clazz clazz, Method method) + { + String name = method.getName(clazz); + + if (!name.equals(ClassConstants.INTERNAL_METHOD_NAME_CLINIT) && + !name.equals(ClassConstants.INTERNAL_METHOD_NAME_INIT)) + { + MemberObfuscator.setFixedNewMemberName(method, + method.getName(clazz)); + } + } +} |