| /* |
| * ProGuard -- shrinking, optimization, obfuscation, and preverification |
| * of Java bytecode. |
| * |
| * Copyright (c) 2002-2017 Eric Lafortune @ GuardSquare |
| * |
| * 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.attribute.*; |
| import proguard.classfile.attribute.annotation.*; |
| import proguard.classfile.attribute.preverification.*; |
| import proguard.classfile.attribute.visitor.AttributeVisitor; |
| import proguard.classfile.util.ClassUtil; |
| |
| /** |
| * This AttributeVisitor delegates its call to another AttributeVisitor, and |
| * prints out the code if the other visitor has changed it. |
| * |
| * @author Eric Lafortune |
| */ |
| public class ChangedCodePrinter |
| implements AttributeVisitor |
| { |
| private final AttributeVisitor attributeVisitor; |
| |
| |
| public ChangedCodePrinter(AttributeVisitor attributeVisitor) |
| { |
| this.attributeVisitor = attributeVisitor; |
| } |
| |
| |
| // Implementations for AttributeVisitor. |
| |
| public void visitUnknownAttribute(Clazz clazz, UnknownAttribute unknownAttribute) |
| { |
| attributeVisitor.visitUnknownAttribute(clazz, unknownAttribute); |
| } |
| |
| |
| public void visitBootstrapMethodsAttribute(Clazz clazz, BootstrapMethodsAttribute bootstrapMethodsAttribute) |
| { |
| attributeVisitor.visitBootstrapMethodsAttribute(clazz, bootstrapMethodsAttribute); |
| } |
| |
| |
| public void visitSourceFileAttribute(Clazz clazz, SourceFileAttribute sourceFileAttribute) |
| { |
| attributeVisitor.visitSourceFileAttribute(clazz, sourceFileAttribute); |
| } |
| |
| |
| public void visitSourceDirAttribute(Clazz clazz, SourceDirAttribute sourceDirAttribute) |
| { |
| attributeVisitor.visitSourceDirAttribute(clazz, sourceDirAttribute); |
| } |
| |
| |
| public void visitInnerClassesAttribute(Clazz clazz, InnerClassesAttribute innerClassesAttribute) |
| { |
| attributeVisitor.visitInnerClassesAttribute(clazz, innerClassesAttribute); |
| } |
| |
| |
| public void visitEnclosingMethodAttribute(Clazz clazz, EnclosingMethodAttribute enclosingMethodAttribute) |
| { |
| attributeVisitor.visitEnclosingMethodAttribute(clazz, enclosingMethodAttribute); |
| } |
| |
| |
| public void visitDeprecatedAttribute(Clazz clazz, DeprecatedAttribute deprecatedAttribute) |
| { |
| attributeVisitor.visitDeprecatedAttribute(clazz, deprecatedAttribute); |
| } |
| |
| |
| public void visitSyntheticAttribute(Clazz clazz, SyntheticAttribute syntheticAttribute) |
| { |
| attributeVisitor.visitSyntheticAttribute(clazz, syntheticAttribute); |
| } |
| |
| |
| public void visitSignatureAttribute(Clazz clazz, SignatureAttribute syntheticAttribute) |
| { |
| attributeVisitor.visitSignatureAttribute(clazz, syntheticAttribute); |
| } |
| |
| |
| public void visitDeprecatedAttribute(Clazz clazz, Field field, DeprecatedAttribute deprecatedAttribute) |
| { |
| attributeVisitor.visitDeprecatedAttribute(clazz, field, deprecatedAttribute); |
| } |
| |
| |
| public void visitSyntheticAttribute(Clazz clazz, Field field, SyntheticAttribute syntheticAttribute) |
| { |
| attributeVisitor.visitSyntheticAttribute(clazz, field, syntheticAttribute); |
| } |
| |
| |
| public void visitSignatureAttribute(Clazz clazz, Field field, SignatureAttribute syntheticAttribute) |
| { |
| attributeVisitor.visitSignatureAttribute(clazz, field, syntheticAttribute); |
| } |
| |
| |
| public void visitDeprecatedAttribute(Clazz clazz, Method method, DeprecatedAttribute deprecatedAttribute) |
| { |
| attributeVisitor.visitDeprecatedAttribute(clazz, method, deprecatedAttribute); |
| } |
| |
| |
| public void visitSyntheticAttribute(Clazz clazz, Method method, SyntheticAttribute syntheticAttribute) |
| { |
| attributeVisitor.visitSyntheticAttribute(clazz, method, syntheticAttribute); |
| } |
| |
| |
| public void visitSignatureAttribute(Clazz clazz, Method method, SignatureAttribute syntheticAttribute) |
| { |
| attributeVisitor.visitSignatureAttribute(clazz, method, syntheticAttribute); |
| } |
| |
| |
| public void visitConstantValueAttribute(Clazz clazz, Field field, ConstantValueAttribute constantValueAttribute) |
| { |
| attributeVisitor.visitConstantValueAttribute(clazz, field, constantValueAttribute); |
| } |
| |
| |
| public void visitMethodParametersAttribute(Clazz clazz, Method method, MethodParametersAttribute exceptionsAttribute) |
| { |
| attributeVisitor.visitMethodParametersAttribute(clazz, method, exceptionsAttribute); |
| } |
| |
| |
| public void visitExceptionsAttribute(Clazz clazz, Method method, ExceptionsAttribute exceptionsAttribute) |
| { |
| attributeVisitor.visitExceptionsAttribute(clazz, method, exceptionsAttribute); |
| } |
| |
| |
| public void visitStackMapAttribute(Clazz clazz, Method method, CodeAttribute codeAttribute, StackMapAttribute stackMapAttribute) |
| { |
| attributeVisitor.visitStackMapAttribute(clazz, method, codeAttribute, stackMapAttribute); |
| } |
| |
| |
| public void visitStackMapTableAttribute(Clazz clazz, Method method, CodeAttribute codeAttribute, StackMapTableAttribute stackMapTableAttribute) |
| { |
| attributeVisitor.visitStackMapTableAttribute(clazz, method, codeAttribute, stackMapTableAttribute); |
| } |
| |
| |
| public void visitLineNumberTableAttribute(Clazz clazz, Method method, CodeAttribute codeAttribute, LineNumberTableAttribute lineNumberTableAttribute) |
| { |
| attributeVisitor.visitLineNumberTableAttribute(clazz, method, codeAttribute, lineNumberTableAttribute); |
| } |
| |
| |
| public void visitLocalVariableTableAttribute(Clazz clazz, Method method, CodeAttribute codeAttribute, LocalVariableTableAttribute localVariableTableAttribute) |
| { |
| attributeVisitor.visitLocalVariableTableAttribute(clazz, method, codeAttribute, localVariableTableAttribute); |
| } |
| |
| |
| public void visitLocalVariableTypeTableAttribute(Clazz clazz, Method method, CodeAttribute codeAttribute, LocalVariableTypeTableAttribute localVariableTypeTableAttribute) |
| { |
| attributeVisitor.visitLocalVariableTypeTableAttribute(clazz, method, codeAttribute, localVariableTypeTableAttribute); |
| } |
| |
| |
| public void visitRuntimeVisibleAnnotationsAttribute(Clazz clazz, RuntimeVisibleAnnotationsAttribute runtimeVisibleAnnotationsAttribute) |
| { |
| attributeVisitor.visitRuntimeVisibleAnnotationsAttribute(clazz, runtimeVisibleAnnotationsAttribute); |
| } |
| |
| |
| public void visitRuntimeInvisibleAnnotationsAttribute(Clazz clazz, RuntimeInvisibleAnnotationsAttribute runtimeInvisibleAnnotationsAttribute) |
| { |
| attributeVisitor.visitRuntimeInvisibleAnnotationsAttribute(clazz, runtimeInvisibleAnnotationsAttribute); |
| } |
| |
| |
| public void visitRuntimeVisibleAnnotationsAttribute(Clazz clazz, Field field, RuntimeVisibleAnnotationsAttribute runtimeVisibleAnnotationsAttribute) |
| { |
| attributeVisitor.visitRuntimeVisibleAnnotationsAttribute(clazz, field, runtimeVisibleAnnotationsAttribute); |
| } |
| |
| |
| public void visitRuntimeInvisibleAnnotationsAttribute(Clazz clazz, Field field, RuntimeInvisibleAnnotationsAttribute runtimeInvisibleAnnotationsAttribute) |
| { |
| attributeVisitor.visitRuntimeInvisibleAnnotationsAttribute(clazz, field, runtimeInvisibleAnnotationsAttribute); |
| } |
| |
| |
| public void visitRuntimeVisibleAnnotationsAttribute(Clazz clazz, Method method, RuntimeVisibleAnnotationsAttribute runtimeVisibleAnnotationsAttribute) |
| { |
| attributeVisitor.visitRuntimeVisibleAnnotationsAttribute(clazz, method, runtimeVisibleAnnotationsAttribute); |
| } |
| |
| |
| public void visitRuntimeInvisibleAnnotationsAttribute(Clazz clazz, Method method, RuntimeInvisibleAnnotationsAttribute runtimeInvisibleAnnotationsAttribute) |
| { |
| attributeVisitor.visitRuntimeInvisibleAnnotationsAttribute(clazz, method, runtimeInvisibleAnnotationsAttribute); |
| } |
| |
| |
| public void visitRuntimeVisibleParameterAnnotationsAttribute(Clazz clazz, Method method, RuntimeVisibleParameterAnnotationsAttribute runtimeVisibleParameterAnnotationsAttribute) |
| { |
| attributeVisitor.visitRuntimeVisibleParameterAnnotationsAttribute(clazz, method, runtimeVisibleParameterAnnotationsAttribute); |
| } |
| |
| |
| public void visitRuntimeInvisibleParameterAnnotationsAttribute(Clazz clazz, Method method, RuntimeInvisibleParameterAnnotationsAttribute runtimeInvisibleParameterAnnotationsAttribute) |
| { |
| attributeVisitor.visitRuntimeInvisibleParameterAnnotationsAttribute(clazz, method, runtimeInvisibleParameterAnnotationsAttribute); |
| } |
| |
| |
| public void visitRuntimeVisibleTypeAnnotationsAttribute(Clazz clazz, RuntimeVisibleTypeAnnotationsAttribute runtimeVisibleTypeAnnotationsAttribute) |
| { |
| attributeVisitor.visitRuntimeVisibleTypeAnnotationsAttribute(clazz, runtimeVisibleTypeAnnotationsAttribute); |
| } |
| |
| |
| public void visitRuntimeVisibleTypeAnnotationsAttribute(Clazz clazz, Field field, RuntimeVisibleTypeAnnotationsAttribute runtimeVisibleTypeAnnotationsAttribute) |
| { |
| attributeVisitor.visitRuntimeVisibleTypeAnnotationsAttribute(clazz, field, runtimeVisibleTypeAnnotationsAttribute); |
| } |
| |
| |
| public void visitRuntimeVisibleTypeAnnotationsAttribute(Clazz clazz, Method method, RuntimeVisibleTypeAnnotationsAttribute runtimeVisibleTypeAnnotationsAttribute) |
| { |
| attributeVisitor.visitRuntimeVisibleTypeAnnotationsAttribute(clazz, method, runtimeVisibleTypeAnnotationsAttribute); |
| } |
| |
| |
| public void visitRuntimeVisibleTypeAnnotationsAttribute(Clazz clazz, Method method, CodeAttribute codeAttribute, RuntimeVisibleTypeAnnotationsAttribute runtimeVisibleTypeAnnotationsAttribute) |
| { |
| attributeVisitor.visitRuntimeVisibleTypeAnnotationsAttribute(clazz, method, codeAttribute, runtimeVisibleTypeAnnotationsAttribute); |
| } |
| |
| |
| public void visitRuntimeInvisibleTypeAnnotationsAttribute(Clazz clazz, RuntimeInvisibleTypeAnnotationsAttribute runtimeInvisibleTypeAnnotationsAttribute) |
| { |
| attributeVisitor.visitRuntimeInvisibleTypeAnnotationsAttribute(clazz, runtimeInvisibleTypeAnnotationsAttribute); |
| } |
| |
| |
| public void visitRuntimeInvisibleTypeAnnotationsAttribute(Clazz clazz, Field field, RuntimeInvisibleTypeAnnotationsAttribute runtimeInvisibleTypeAnnotationsAttribute) |
| { |
| attributeVisitor.visitRuntimeInvisibleTypeAnnotationsAttribute(clazz, field, runtimeInvisibleTypeAnnotationsAttribute); |
| } |
| |
| |
| public void visitRuntimeInvisibleTypeAnnotationsAttribute(Clazz clazz, Method method, RuntimeInvisibleTypeAnnotationsAttribute runtimeInvisibleTypeAnnotationsAttribute) |
| { |
| attributeVisitor.visitRuntimeInvisibleTypeAnnotationsAttribute(clazz, method, runtimeInvisibleTypeAnnotationsAttribute); |
| } |
| |
| |
| public void visitRuntimeInvisibleTypeAnnotationsAttribute(Clazz clazz, Method method, CodeAttribute codeAttribute, RuntimeInvisibleTypeAnnotationsAttribute runtimeInvisibleTypeAnnotationsAttribute) |
| { |
| attributeVisitor.visitRuntimeInvisibleTypeAnnotationsAttribute(clazz, method, codeAttribute, runtimeInvisibleTypeAnnotationsAttribute); |
| } |
| |
| |
| public void visitAnnotationDefaultAttribute(Clazz clazz, Method method, AnnotationDefaultAttribute annotationDefaultAttribute) |
| { |
| attributeVisitor.visitAnnotationDefaultAttribute(clazz, method, annotationDefaultAttribute); |
| } |
| |
| |
| public void visitCodeAttribute(Clazz clazz, Method method, CodeAttribute codeAttribute) |
| { |
| byte[] code = codeAttribute.code; |
| byte[] oldCode = new byte[code.length]; |
| |
| // Copy the current code. |
| System.arraycopy(code, 0, oldCode, 0, codeAttribute.u4codeLength); |
| |
| // Delegate to the real visitor. |
| attributeVisitor.visitCodeAttribute(clazz, method, codeAttribute); |
| |
| // Check if the code has changed. |
| if (codeHasChanged(codeAttribute, oldCode)) |
| { |
| printChangedCode(clazz, method, codeAttribute, oldCode); |
| } |
| } |
| |
| |
| // Small utility methods. |
| |
| private boolean codeHasChanged(CodeAttribute codeAttribute, byte[] oldCode) |
| { |
| if (oldCode.length != codeAttribute.u4codeLength) |
| { |
| return true; |
| } |
| |
| for (int index = 0; index < codeAttribute.u4codeLength; index++) |
| { |
| if (oldCode[index] != codeAttribute.code[index]) |
| { |
| return true; |
| } |
| } |
| |
| return false; |
| } |
| |
| |
| private void printChangedCode(Clazz clazz, |
| Method method, |
| CodeAttribute codeAttribute, |
| byte[] oldCode) |
| { |
| System.out.println("Class "+ClassUtil.externalClassName(clazz.getName())); |
| System.out.println("Method "+ClassUtil.externalFullMethodDescription(clazz.getName(), |
| 0, |
| method.getName(clazz), |
| method.getDescriptor(clazz))); |
| |
| for (int index = 0; index < codeAttribute.u4codeLength; index++) |
| { |
| System.out.println( |
| (oldCode[index] == codeAttribute.code[index]? " -- ":" => ")+ |
| index+": "+ |
| Integer.toHexString(0x100|oldCode[index] &0xff).substring(1)+" "+ |
| Integer.toHexString(0x100|codeAttribute.code[index]&0xff).substring(1)); |
| } |
| } |
| } |