src/proguard/classfile/editor/AttributeAdder.java - platform/external/proguard - Git at Google

 /*
  * 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.classfile.editor;

 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.SimplifiedVisitor;

 import java.lang.reflect.Array;
 import java.util.Arrays;

 /**
  * This AttributeVisitor adds all attributes that it visits to the given
  * target class, class member, or attribute.
  *
  * @author Eric Lafortune
  */
 public class AttributeAdder
 extends      SimplifiedVisitor
 implements   AttributeVisitor
 {
     private static final byte[]          EMPTY_BYTES       = new byte[0];
     private static final int[]           EMPTY_INTS        = new int[0];
     private static final Attribute[]     EMPTY_ATTRIBUTES  = new Attribute[0];
     private static final ExceptionInfo[] EMPTY_EXCEPTIONS  = new ExceptionInfo[0];
     private static final Annotation[]    EMPTY_ANNOTATIONS = new Annotation[0];


     private final ProgramClass  targetClass;
     private final ProgramMember targetMember;
     private final CodeAttribute targetCodeAttribute;
     private final boolean       replaceAttributes;

     private final ConstantAdder    constantAdder;
     private final AttributesEditor attributesEditor;


     /**
      * Creates a new AttributeAdder that will copy attributes into the given
      * target class.
      */
     public AttributeAdder(ProgramClass targetClass,
                           boolean      replaceAttributes)
     {
         this(targetClass, null, null, replaceAttributes);
     }


     /**
      * Creates a new AttributeAdder that will copy attributes into the given
      * target class member.
      */
     public AttributeAdder(ProgramClass  targetClass,
                           ProgramMember targetMember,
                           boolean       replaceAttributes)
     {
         this(targetClass, targetMember, null, replaceAttributes);
     }


     /**
      * Creates a new AttributeAdder that will copy attributes into the given
      * target attribute.
      */
     public AttributeAdder(ProgramClass  targetClass,
                           ProgramMember targetMember,
                           CodeAttribute targetCodeAttribute,
                           boolean       replaceAttributes)
     {
         this.targetClass         = targetClass;
         this.targetMember        = targetMember;
         this.targetCodeAttribute = targetCodeAttribute;
         this.replaceAttributes   = replaceAttributes;

         constantAdder    = new ConstantAdder(targetClass);
         attributesEditor = new AttributesEditor(targetClass,
                                                 targetMember,
                                                 targetCodeAttribute,
                                                 replaceAttributes);
     }


     // Implementations for AttributeVisitor.

     public void visitUnknownAttribute(Clazz clazz, UnknownAttribute unknownAttribute)
     {
         // Create a copy of the attribute.
         UnknownAttribute newUnknownAttribute =
             new UnknownAttribute(constantAdder.addConstant(clazz, unknownAttribute.u2attributeNameIndex),
                                  unknownAttribute.u4attributeLength,
                                  unknownAttribute.info);

         // Add it to the target class.
         attributesEditor.addAttribute(newUnknownAttribute);
     }


     public void visitSourceFileAttribute(Clazz clazz, SourceFileAttribute sourceFileAttribute)
     {
         // Create a copy of the attribute.
         SourceFileAttribute newSourceFileAttribute =
             new SourceFileAttribute(constantAdder.addConstant(clazz, sourceFileAttribute.u2attributeNameIndex),
                                     constantAdder.addConstant(clazz, sourceFileAttribute.u2sourceFileIndex));

         // Add it to the target class.
         attributesEditor.addAttribute(newSourceFileAttribute);
     }


     public void visitSourceDirAttribute(Clazz clazz, SourceDirAttribute sourceDirAttribute)
     {
         // Create a copy of the attribute.
         SourceDirAttribute newSourceDirAttribute =
             new SourceDirAttribute(constantAdder.addConstant(clazz, sourceDirAttribute.u2attributeNameIndex),
                                    constantAdder.addConstant(clazz, sourceDirAttribute.u2sourceDirIndex));

         // Add it to the target class.
         attributesEditor.addAttribute(newSourceDirAttribute);
     }


     public void visitInnerClassesAttribute(Clazz clazz, InnerClassesAttribute innerClassesAttribute)
     {
         // Create a copy of the attribute.
         InnerClassesAttribute newInnerClassesAttribute =
             new InnerClassesAttribute(constantAdder.addConstant(clazz, innerClassesAttribute.u2attributeNameIndex),
                                       0,
                                       null);

         // Add it to the target class.
         attributesEditor.addAttribute(newInnerClassesAttribute);
     }


     public void visitEnclosingMethodAttribute(Clazz clazz, EnclosingMethodAttribute enclosingMethodAttribute)
     {
         // Create a copy of the attribute.
         EnclosingMethodAttribute newEnclosingMethodAttribute =
             new EnclosingMethodAttribute(constantAdder.addConstant(clazz, enclosingMethodAttribute.u2attributeNameIndex),
                                          constantAdder.addConstant(clazz, enclosingMethodAttribute.u2classIndex),
                                          enclosingMethodAttribute.u2nameAndTypeIndex == 0 ? 0 :
                                          constantAdder.addConstant(clazz, enclosingMethodAttribute.u2nameAndTypeIndex));

         newEnclosingMethodAttribute.referencedClass  = enclosingMethodAttribute.referencedClass;
         newEnclosingMethodAttribute.referencedMethod = enclosingMethodAttribute.referencedMethod;

         // Add it to the target class.
         attributesEditor.addAttribute(newEnclosingMethodAttribute);
     }


     public void visitDeprecatedAttribute(Clazz clazz, DeprecatedAttribute deprecatedAttribute)
     {
         // Create a copy of the attribute.
         DeprecatedAttribute newDeprecatedAttribute =
             new DeprecatedAttribute(constantAdder.addConstant(clazz, deprecatedAttribute.u2attributeNameIndex));

         // Add it to the target.
         attributesEditor.addAttribute(newDeprecatedAttribute);
     }


     public void visitSyntheticAttribute(Clazz clazz, SyntheticAttribute syntheticAttribute)
     {
         // Create a copy of the attribute.
         SyntheticAttribute newSyntheticAttribute =
             new SyntheticAttribute(constantAdder.addConstant(clazz, syntheticAttribute.u2attributeNameIndex));

         // Add it to the target.
         attributesEditor.addAttribute(newSyntheticAttribute);
     }


     public void visitSignatureAttribute(Clazz clazz, SignatureAttribute signatureAttribute)
     {
         // Create a copy of the attribute.
         SignatureAttribute newSignatureAttribute =
             new SignatureAttribute(constantAdder.addConstant(clazz, signatureAttribute.u2attributeNameIndex),
                                    constantAdder.addConstant(clazz, signatureAttribute.u2signatureIndex));

         newSignatureAttribute.referencedClasses = signatureAttribute.referencedClasses;

         // Add it to the target.
         attributesEditor.addAttribute(newSignatureAttribute);
     }


     public void visitConstantValueAttribute(Clazz clazz, Field field, ConstantValueAttribute constantValueAttribute)
     {
         // Create a copy of the attribute.
         ConstantValueAttribute newConstantValueAttribute =
             new ConstantValueAttribute(constantAdder.addConstant(clazz, constantValueAttribute.u2attributeNameIndex),
                                        constantAdder.addConstant(clazz, constantValueAttribute.u2constantValueIndex));

         // Add it to the target field.
         attributesEditor.addAttribute(newConstantValueAttribute);
     }


     public void visitMethodParametersAttribute(Clazz clazz, Method method, MethodParametersAttribute methodParametersAttribute)
     {
         // Create a new local variable table attribute.
         MethodParametersAttribute newMethodParametersAttribute =
             new MethodParametersAttribute(constantAdder.addConstant(clazz, methodParametersAttribute.u2attributeNameIndex),
                                           methodParametersAttribute.u1parametersCount,
                                           new ParameterInfo[methodParametersAttribute.u1parametersCount]);

         // Add the local variables.
         methodParametersAttribute.parametersAccept(clazz,
                                                    method,
                                                    new ParameterInfoAdder(targetClass, newMethodParametersAttribute));

         // Add it to the target.
         attributesEditor.addAttribute(newMethodParametersAttribute);
     }


     public void visitExceptionsAttribute(Clazz clazz, Method method, ExceptionsAttribute exceptionsAttribute)
     {
         // Create a new exceptions attribute.
         ExceptionsAttribute newExceptionsAttribute =
             new ExceptionsAttribute(constantAdder.addConstant(clazz, exceptionsAttribute.u2attributeNameIndex),
                                     0,
                                     exceptionsAttribute.u2exceptionIndexTableLength > 0 ?
                                         new int[exceptionsAttribute.u2exceptionIndexTableLength] :
                                         EMPTY_INTS);

         // Add the exceptions.
         exceptionsAttribute.exceptionEntriesAccept((ProgramClass)clazz,
                                                    new ExceptionAdder(targetClass,
                                                                       newExceptionsAttribute));

         // Add it to the target method.
         attributesEditor.addAttribute(newExceptionsAttribute);
     }


     public void visitCodeAttribute(Clazz clazz, Method method, CodeAttribute codeAttribute)
     {
         // Create a new code attribute.
         CodeAttribute newCodeAttribute =
             new CodeAttribute(constantAdder.addConstant(clazz, codeAttribute.u2attributeNameIndex),
                               codeAttribute.u2maxStack,
                               codeAttribute.u2maxLocals,
                               0,
                               EMPTY_BYTES,
                               0,
                               codeAttribute.u2exceptionTableLength > 0 ?
                                   new ExceptionInfo[codeAttribute.u2exceptionTableLength] :
                                   EMPTY_EXCEPTIONS,
                               0,
                               codeAttribute.u2attributesCount > 0 ?
                                   new Attribute[codeAttribute.u2attributesCount] :
                                   EMPTY_ATTRIBUTES);

         CodeAttributeComposer codeAttributeComposer = new CodeAttributeComposer();

         codeAttributeComposer.beginCodeFragment(codeAttribute.u4codeLength + 32);

         // Add the instructions.
         codeAttribute.instructionsAccept(clazz,
                                          method,
                                          new InstructionAdder(targetClass,
                                                               codeAttributeComposer));

         // Append a label just after the code.
         codeAttributeComposer.appendLabel(codeAttribute.u4codeLength);

         // Add the exceptions.
         codeAttribute.exceptionsAccept(clazz,
                                        method,
                                        new ExceptionInfoAdder(targetClass,
                                                               codeAttributeComposer));

         codeAttributeComposer.endCodeFragment();

         // Add the attributes.
         codeAttribute.attributesAccept(clazz,
                                        method,
                                        new AttributeAdder(targetClass,
                                                           targetMember,
                                                           newCodeAttribute,
                                                           replaceAttributes));

         // Apply these changes to the new code attribute.
         codeAttributeComposer.visitCodeAttribute(targetClass,
                                                  (Method)targetMember,
                                                  newCodeAttribute);

         // Add the completed code attribute to the target method.
         attributesEditor.addAttribute(newCodeAttribute);
     }


     public void visitStackMapAttribute(Clazz clazz, Method method, CodeAttribute codeAttribute, StackMapAttribute stackMapAttribute)
     {
         // TODO: Implement method.
     }


     public void visitStackMapTableAttribute(Clazz clazz, Method method, CodeAttribute codeAttribute, StackMapTableAttribute stackMapTableAttribute)
     {
         // TODO: Implement method.
     }


     public void visitLineNumberTableAttribute(Clazz clazz, Method method, CodeAttribute codeAttribute, LineNumberTableAttribute lineNumberTableAttribute)
     {
         // Create a new line number table attribute.
         LineNumberTableAttribute newLineNumberTableAttribute =
             new LineNumberTableAttribute(constantAdder.addConstant(clazz, lineNumberTableAttribute.u2attributeNameIndex),
                                          0,
                                          new LineNumberInfo[lineNumberTableAttribute.u2lineNumberTableLength]);

         // Add the line numbers.
         lineNumberTableAttribute.lineNumbersAccept(clazz,
                                                    method,
                                                    codeAttribute,
                                                    new LineNumberInfoAdder(newLineNumberTableAttribute));

         // Add it to the target.
         attributesEditor.addAttribute(newLineNumberTableAttribute);
     }


     public void visitLocalVariableTableAttribute(Clazz clazz, Method method, CodeAttribute codeAttribute, LocalVariableTableAttribute localVariableTableAttribute)
     {
         // Create a new local variable table attribute.
         LocalVariableTableAttribute newLocalVariableTableAttribute =
             new LocalVariableTableAttribute(constantAdder.addConstant(clazz, localVariableTableAttribute.u2attributeNameIndex),
                                             0,
                                             new LocalVariableInfo[localVariableTableAttribute.u2localVariableTableLength]);

         // Add the local variables.
         localVariableTableAttribute.localVariablesAccept(clazz,
                                                          method,
                                                          codeAttribute,
                                                          new LocalVariableInfoAdder(targetClass, newLocalVariableTableAttribute));

         // Add it to the target.
         attributesEditor.addAttribute(newLocalVariableTableAttribute);
     }


     public void visitLocalVariableTypeTableAttribute(Clazz clazz, Method method, CodeAttribute codeAttribute, LocalVariableTypeTableAttribute localVariableTypeTableAttribute)
     {
         // Create a new local variable type table attribute.
         LocalVariableTypeTableAttribute newLocalVariableTypeTableAttribute =
             new LocalVariableTypeTableAttribute(constantAdder.addConstant(clazz, localVariableTypeTableAttribute.u2attributeNameIndex),
                                             0,
                                             new LocalVariableTypeInfo[localVariableTypeTableAttribute.u2localVariableTypeTableLength]);

         // Add the local variable types.
         localVariableTypeTableAttribute.localVariablesAccept(clazz,
                                                              method,
                                                              codeAttribute,
                                                              new LocalVariableTypeInfoAdder(targetClass, newLocalVariableTypeTableAttribute));

         // Add it to the target.
         attributesEditor.addAttribute(newLocalVariableTypeTableAttribute);
     }


     public void visitRuntimeVisibleAnnotationsAttribute(Clazz clazz, RuntimeVisibleAnnotationsAttribute runtimeVisibleAnnotationsAttribute)
     {
         // Create a new annotations attribute.
         RuntimeVisibleAnnotationsAttribute newAnnotationsAttribute =
             new RuntimeVisibleAnnotationsAttribute(constantAdder.addConstant(clazz, runtimeVisibleAnnotationsAttribute.u2attributeNameIndex),
                                                    0,
                                                    new Annotation[runtimeVisibleAnnotationsAttribute.u2annotationsCount]);

         // Add the annotations.
         runtimeVisibleAnnotationsAttribute.annotationsAccept(clazz,
                                                              new AnnotationAdder(targetClass,
                                                                                  newAnnotationsAttribute));

         // Add it to the target.
         attributesEditor.addAttribute(newAnnotationsAttribute);
     }


     public void visitRuntimeInvisibleAnnotationsAttribute(Clazz clazz, RuntimeInvisibleAnnotationsAttribute runtimeInvisibleAnnotationsAttribute)
     {
         // Create a new annotations attribute.
         RuntimeInvisibleAnnotationsAttribute newAnnotationsAttribute =
             new RuntimeInvisibleAnnotationsAttribute(constantAdder.addConstant(clazz, runtimeInvisibleAnnotationsAttribute.u2attributeNameIndex),
                                                      0,
                                                      new Annotation[runtimeInvisibleAnnotationsAttribute.u2annotationsCount]);

         // Add the annotations.
         runtimeInvisibleAnnotationsAttribute.annotationsAccept(clazz,
                                                                new AnnotationAdder(targetClass,
                                                                                    newAnnotationsAttribute));

         // Add it to the target.
         attributesEditor.addAttribute(newAnnotationsAttribute);
     }


     public void visitRuntimeVisibleParameterAnnotationsAttribute(Clazz clazz, Method method, RuntimeVisibleParameterAnnotationsAttribute runtimeVisibleParameterAnnotationsAttribute)
     {
         // Create a new annotations attribute.
         Annotation[][] parameterAnnotations =
             new Annotation[runtimeVisibleParameterAnnotationsAttribute.u1parametersCount][];

         Arrays.fill(parameterAnnotations, EMPTY_ANNOTATIONS);

         RuntimeVisibleParameterAnnotationsAttribute newParameterAnnotationsAttribute =
             new RuntimeVisibleParameterAnnotationsAttribute(constantAdder.addConstant(clazz, runtimeVisibleParameterAnnotationsAttribute.u2attributeNameIndex),
                                                             0,
                                                             new int[runtimeVisibleParameterAnnotationsAttribute.u1parametersCount],
                                                             parameterAnnotations);

         // Add the annotations.
         runtimeVisibleParameterAnnotationsAttribute.annotationsAccept(clazz,
                                                                       method,
                                                                       new AnnotationAdder(targetClass,
                                                                                           newParameterAnnotationsAttribute));

         // Add it to the target.
         attributesEditor.addAttribute(newParameterAnnotationsAttribute);
     }


     public void visitRuntimeInvisibleParameterAnnotationsAttribute(Clazz clazz, Method method, RuntimeInvisibleParameterAnnotationsAttribute runtimeInvisibleParameterAnnotationsAttribute)
     {
         // Create a new annotations attribute.
         Annotation[][] parameterAnnotations =
             new Annotation[runtimeInvisibleParameterAnnotationsAttribute.u1parametersCount][];

         Arrays.fill(parameterAnnotations, EMPTY_ANNOTATIONS);

         RuntimeInvisibleParameterAnnotationsAttribute newParameterAnnotationsAttribute =
             new RuntimeInvisibleParameterAnnotationsAttribute(constantAdder.addConstant(clazz, runtimeInvisibleParameterAnnotationsAttribute.u2attributeNameIndex),
                                                               0,
                                                               new int[runtimeInvisibleParameterAnnotationsAttribute.u1parametersCount],
                                                               parameterAnnotations);

         // Add the annotations.
         runtimeInvisibleParameterAnnotationsAttribute.annotationsAccept(clazz,
                                                                         method,
                                                                         new AnnotationAdder(targetClass,
                                                                                             newParameterAnnotationsAttribute));

         // Add it to the target.
         attributesEditor.addAttribute(newParameterAnnotationsAttribute);
     }


     public void visitAnnotationDefaultAttribute(Clazz clazz, Method method, AnnotationDefaultAttribute annotationDefaultAttribute)
     {
         // Create a new annotation default attribute.
         AnnotationDefaultAttribute newAnnotationDefaultAttribute =
             new AnnotationDefaultAttribute(constantAdder.addConstant(clazz, annotationDefaultAttribute.u2attributeNameIndex),
                                            null);

         // Add the annotations.
         annotationDefaultAttribute.defaultValueAccept(clazz,
                                                       new ElementValueAdder(targetClass,
                                                                             newAnnotationDefaultAttribute,
                                                                             false));

         // Add it to the target.
         attributesEditor.addAttribute(newAnnotationDefaultAttribute);
     }
 }
	/*
	* 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.classfile.editor;

	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.SimplifiedVisitor;

	import java.lang.reflect.Array;
	import java.util.Arrays;

	/**
	* This AttributeVisitor adds all attributes that it visits to the given
	* target class, class member, or attribute.
	*
	* @author Eric Lafortune
	*/
	public class AttributeAdder
	extends SimplifiedVisitor
	implements AttributeVisitor
	{
	private static final byte[] EMPTY_BYTES = new byte[0];
	private static final int[] EMPTY_INTS = new int[0];
	private static final Attribute[] EMPTY_ATTRIBUTES = new Attribute[0];
	private static final ExceptionInfo[] EMPTY_EXCEPTIONS = new ExceptionInfo[0];
	private static final Annotation[] EMPTY_ANNOTATIONS = new Annotation[0];


	private final ProgramClass targetClass;
	private final ProgramMember targetMember;
	private final CodeAttribute targetCodeAttribute;
	private final boolean replaceAttributes;

	private final ConstantAdder constantAdder;
	private final AttributesEditor attributesEditor;


	/**
	* Creates a new AttributeAdder that will copy attributes into the given
	* target class.
	*/
	public AttributeAdder(ProgramClass targetClass,
	boolean replaceAttributes)
	{
	this(targetClass, null, null, replaceAttributes);
	}


	/**
	* Creates a new AttributeAdder that will copy attributes into the given
	* target class member.
	*/
	public AttributeAdder(ProgramClass targetClass,
	ProgramMember targetMember,
	boolean replaceAttributes)
	{
	this(targetClass, targetMember, null, replaceAttributes);
	}


	/**
	* Creates a new AttributeAdder that will copy attributes into the given
	* target attribute.
	*/
	public AttributeAdder(ProgramClass targetClass,
	ProgramMember targetMember,
	CodeAttribute targetCodeAttribute,
	boolean replaceAttributes)
	{
	this.targetClass = targetClass;
	this.targetMember = targetMember;
	this.targetCodeAttribute = targetCodeAttribute;
	this.replaceAttributes = replaceAttributes;

	constantAdder = new ConstantAdder(targetClass);
	attributesEditor = new AttributesEditor(targetClass,
	targetMember,
	targetCodeAttribute,
	replaceAttributes);
	}


	// Implementations for AttributeVisitor.

	public void visitUnknownAttribute(Clazz clazz, UnknownAttribute unknownAttribute)
	{
	// Create a copy of the attribute.
	UnknownAttribute newUnknownAttribute =
	new UnknownAttribute(constantAdder.addConstant(clazz, unknownAttribute.u2attributeNameIndex),
	unknownAttribute.u4attributeLength,
	unknownAttribute.info);

	// Add it to the target class.
	attributesEditor.addAttribute(newUnknownAttribute);
	}


	public void visitSourceFileAttribute(Clazz clazz, SourceFileAttribute sourceFileAttribute)
	{
	// Create a copy of the attribute.
	SourceFileAttribute newSourceFileAttribute =
	new SourceFileAttribute(constantAdder.addConstant(clazz, sourceFileAttribute.u2attributeNameIndex),
	constantAdder.addConstant(clazz, sourceFileAttribute.u2sourceFileIndex));

	// Add it to the target class.
	attributesEditor.addAttribute(newSourceFileAttribute);
	}


	public void visitSourceDirAttribute(Clazz clazz, SourceDirAttribute sourceDirAttribute)
	{
	// Create a copy of the attribute.
	SourceDirAttribute newSourceDirAttribute =
	new SourceDirAttribute(constantAdder.addConstant(clazz, sourceDirAttribute.u2attributeNameIndex),
	constantAdder.addConstant(clazz, sourceDirAttribute.u2sourceDirIndex));

	// Add it to the target class.
	attributesEditor.addAttribute(newSourceDirAttribute);
	}


	public void visitInnerClassesAttribute(Clazz clazz, InnerClassesAttribute innerClassesAttribute)
	{
	// Create a copy of the attribute.
	InnerClassesAttribute newInnerClassesAttribute =
	new InnerClassesAttribute(constantAdder.addConstant(clazz, innerClassesAttribute.u2attributeNameIndex),
	0,
	null);

	// Add it to the target class.
	attributesEditor.addAttribute(newInnerClassesAttribute);
	}


	public void visitEnclosingMethodAttribute(Clazz clazz, EnclosingMethodAttribute enclosingMethodAttribute)
	{
	// Create a copy of the attribute.
	EnclosingMethodAttribute newEnclosingMethodAttribute =
	new EnclosingMethodAttribute(constantAdder.addConstant(clazz, enclosingMethodAttribute.u2attributeNameIndex),
	constantAdder.addConstant(clazz, enclosingMethodAttribute.u2classIndex),
	enclosingMethodAttribute.u2nameAndTypeIndex == 0 ? 0 :
	constantAdder.addConstant(clazz, enclosingMethodAttribute.u2nameAndTypeIndex));

	newEnclosingMethodAttribute.referencedClass = enclosingMethodAttribute.referencedClass;
	newEnclosingMethodAttribute.referencedMethod = enclosingMethodAttribute.referencedMethod;

	// Add it to the target class.
	attributesEditor.addAttribute(newEnclosingMethodAttribute);
	}


	public void visitDeprecatedAttribute(Clazz clazz, DeprecatedAttribute deprecatedAttribute)
	{
	// Create a copy of the attribute.
	DeprecatedAttribute newDeprecatedAttribute =
	new DeprecatedAttribute(constantAdder.addConstant(clazz, deprecatedAttribute.u2attributeNameIndex));

	// Add it to the target.
	attributesEditor.addAttribute(newDeprecatedAttribute);
	}


	public void visitSyntheticAttribute(Clazz clazz, SyntheticAttribute syntheticAttribute)
	{
	// Create a copy of the attribute.
	SyntheticAttribute newSyntheticAttribute =
	new SyntheticAttribute(constantAdder.addConstant(clazz, syntheticAttribute.u2attributeNameIndex));

	// Add it to the target.
	attributesEditor.addAttribute(newSyntheticAttribute);
	}


	public void visitSignatureAttribute(Clazz clazz, SignatureAttribute signatureAttribute)
	{
	// Create a copy of the attribute.
	SignatureAttribute newSignatureAttribute =
	new SignatureAttribute(constantAdder.addConstant(clazz, signatureAttribute.u2attributeNameIndex),
	constantAdder.addConstant(clazz, signatureAttribute.u2signatureIndex));

	newSignatureAttribute.referencedClasses = signatureAttribute.referencedClasses;

	// Add it to the target.
	attributesEditor.addAttribute(newSignatureAttribute);
	}


	public void visitConstantValueAttribute(Clazz clazz, Field field, ConstantValueAttribute constantValueAttribute)
	{
	// Create a copy of the attribute.
	ConstantValueAttribute newConstantValueAttribute =
	new ConstantValueAttribute(constantAdder.addConstant(clazz, constantValueAttribute.u2attributeNameIndex),
	constantAdder.addConstant(clazz, constantValueAttribute.u2constantValueIndex));

	// Add it to the target field.
	attributesEditor.addAttribute(newConstantValueAttribute);
	}


	public void visitMethodParametersAttribute(Clazz clazz, Method method, MethodParametersAttribute methodParametersAttribute)
	{
	// Create a new local variable table attribute.
	MethodParametersAttribute newMethodParametersAttribute =
	new MethodParametersAttribute(constantAdder.addConstant(clazz, methodParametersAttribute.u2attributeNameIndex),
	methodParametersAttribute.u1parametersCount,
	new ParameterInfo[methodParametersAttribute.u1parametersCount]);

	// Add the local variables.
	methodParametersAttribute.parametersAccept(clazz,
	method,
	new ParameterInfoAdder(targetClass, newMethodParametersAttribute));

	// Add it to the target.
	attributesEditor.addAttribute(newMethodParametersAttribute);
	}


	public void visitExceptionsAttribute(Clazz clazz, Method method, ExceptionsAttribute exceptionsAttribute)
	{
	// Create a new exceptions attribute.
	ExceptionsAttribute newExceptionsAttribute =
	new ExceptionsAttribute(constantAdder.addConstant(clazz, exceptionsAttribute.u2attributeNameIndex),
	0,
	exceptionsAttribute.u2exceptionIndexTableLength > 0 ?
	new int[exceptionsAttribute.u2exceptionIndexTableLength] :
	EMPTY_INTS);

	// Add the exceptions.
	exceptionsAttribute.exceptionEntriesAccept((ProgramClass)clazz,
	new ExceptionAdder(targetClass,
	newExceptionsAttribute));

	// Add it to the target method.
	attributesEditor.addAttribute(newExceptionsAttribute);
	}


	public void visitCodeAttribute(Clazz clazz, Method method, CodeAttribute codeAttribute)
	{
	// Create a new code attribute.
	CodeAttribute newCodeAttribute =
	new CodeAttribute(constantAdder.addConstant(clazz, codeAttribute.u2attributeNameIndex),
	codeAttribute.u2maxStack,
	codeAttribute.u2maxLocals,
	0,
	EMPTY_BYTES,
	0,
	codeAttribute.u2exceptionTableLength > 0 ?
	new ExceptionInfo[codeAttribute.u2exceptionTableLength] :
	EMPTY_EXCEPTIONS,
	0,
	codeAttribute.u2attributesCount > 0 ?
	new Attribute[codeAttribute.u2attributesCount] :
	EMPTY_ATTRIBUTES);

	CodeAttributeComposer codeAttributeComposer = new CodeAttributeComposer();

	codeAttributeComposer.beginCodeFragment(codeAttribute.u4codeLength + 32);

	// Add the instructions.
	codeAttribute.instructionsAccept(clazz,
	method,
	new InstructionAdder(targetClass,
	codeAttributeComposer));

	// Append a label just after the code.
	codeAttributeComposer.appendLabel(codeAttribute.u4codeLength);

	// Add the exceptions.
	codeAttribute.exceptionsAccept(clazz,
	method,
	new ExceptionInfoAdder(targetClass,
	codeAttributeComposer));

	codeAttributeComposer.endCodeFragment();

	// Add the attributes.
	codeAttribute.attributesAccept(clazz,
	method,
	new AttributeAdder(targetClass,
	targetMember,
	newCodeAttribute,
	replaceAttributes));

	// Apply these changes to the new code attribute.
	codeAttributeComposer.visitCodeAttribute(targetClass,
	(Method)targetMember,
	newCodeAttribute);

	// Add the completed code attribute to the target method.
	attributesEditor.addAttribute(newCodeAttribute);
	}


	public void visitStackMapAttribute(Clazz clazz, Method method, CodeAttribute codeAttribute, StackMapAttribute stackMapAttribute)
	{
	// TODO: Implement method.
	}


	public void visitStackMapTableAttribute(Clazz clazz, Method method, CodeAttribute codeAttribute, StackMapTableAttribute stackMapTableAttribute)
	{
	// TODO: Implement method.
	}


	public void visitLineNumberTableAttribute(Clazz clazz, Method method, CodeAttribute codeAttribute, LineNumberTableAttribute lineNumberTableAttribute)
	{
	// Create a new line number table attribute.
	LineNumberTableAttribute newLineNumberTableAttribute =
	new LineNumberTableAttribute(constantAdder.addConstant(clazz, lineNumberTableAttribute.u2attributeNameIndex),
	0,
	new LineNumberInfo[lineNumberTableAttribute.u2lineNumberTableLength]);

	// Add the line numbers.
	lineNumberTableAttribute.lineNumbersAccept(clazz,
	method,
	codeAttribute,
	new LineNumberInfoAdder(newLineNumberTableAttribute));

	// Add it to the target.
	attributesEditor.addAttribute(newLineNumberTableAttribute);
	}


	public void visitLocalVariableTableAttribute(Clazz clazz, Method method, CodeAttribute codeAttribute, LocalVariableTableAttribute localVariableTableAttribute)
	{
	// Create a new local variable table attribute.
	LocalVariableTableAttribute newLocalVariableTableAttribute =
	new LocalVariableTableAttribute(constantAdder.addConstant(clazz, localVariableTableAttribute.u2attributeNameIndex),
	0,
	new LocalVariableInfo[localVariableTableAttribute.u2localVariableTableLength]);

	// Add the local variables.
	localVariableTableAttribute.localVariablesAccept(clazz,
	method,
	codeAttribute,
	new LocalVariableInfoAdder(targetClass, newLocalVariableTableAttribute));

	// Add it to the target.
	attributesEditor.addAttribute(newLocalVariableTableAttribute);
	}


	public void visitLocalVariableTypeTableAttribute(Clazz clazz, Method method, CodeAttribute codeAttribute, LocalVariableTypeTableAttribute localVariableTypeTableAttribute)
	{
	// Create a new local variable type table attribute.
	LocalVariableTypeTableAttribute newLocalVariableTypeTableAttribute =
	new LocalVariableTypeTableAttribute(constantAdder.addConstant(clazz, localVariableTypeTableAttribute.u2attributeNameIndex),
	0,
	new LocalVariableTypeInfo[localVariableTypeTableAttribute.u2localVariableTypeTableLength]);

	// Add the local variable types.
	localVariableTypeTableAttribute.localVariablesAccept(clazz,
	method,
	codeAttribute,
	new LocalVariableTypeInfoAdder(targetClass, newLocalVariableTypeTableAttribute));

	// Add it to the target.
	attributesEditor.addAttribute(newLocalVariableTypeTableAttribute);
	}


	public void visitRuntimeVisibleAnnotationsAttribute(Clazz clazz, RuntimeVisibleAnnotationsAttribute runtimeVisibleAnnotationsAttribute)
	{
	// Create a new annotations attribute.
	RuntimeVisibleAnnotationsAttribute newAnnotationsAttribute =
	new RuntimeVisibleAnnotationsAttribute(constantAdder.addConstant(clazz, runtimeVisibleAnnotationsAttribute.u2attributeNameIndex),
	0,
	new Annotation[runtimeVisibleAnnotationsAttribute.u2annotationsCount]);

	// Add the annotations.
	runtimeVisibleAnnotationsAttribute.annotationsAccept(clazz,
	new AnnotationAdder(targetClass,
	newAnnotationsAttribute));

	// Add it to the target.
	attributesEditor.addAttribute(newAnnotationsAttribute);
	}


	public void visitRuntimeInvisibleAnnotationsAttribute(Clazz clazz, RuntimeInvisibleAnnotationsAttribute runtimeInvisibleAnnotationsAttribute)
	{
	// Create a new annotations attribute.
	RuntimeInvisibleAnnotationsAttribute newAnnotationsAttribute =
	new RuntimeInvisibleAnnotationsAttribute(constantAdder.addConstant(clazz, runtimeInvisibleAnnotationsAttribute.u2attributeNameIndex),
	0,
	new Annotation[runtimeInvisibleAnnotationsAttribute.u2annotationsCount]);

	// Add the annotations.
	runtimeInvisibleAnnotationsAttribute.annotationsAccept(clazz,
	new AnnotationAdder(targetClass,
	newAnnotationsAttribute));

	// Add it to the target.
	attributesEditor.addAttribute(newAnnotationsAttribute);
	}


	public void visitRuntimeVisibleParameterAnnotationsAttribute(Clazz clazz, Method method, RuntimeVisibleParameterAnnotationsAttribute runtimeVisibleParameterAnnotationsAttribute)
	{
	// Create a new annotations attribute.
	Annotation[][] parameterAnnotations =
	new Annotation[runtimeVisibleParameterAnnotationsAttribute.u1parametersCount][];

	Arrays.fill(parameterAnnotations, EMPTY_ANNOTATIONS);

	RuntimeVisibleParameterAnnotationsAttribute newParameterAnnotationsAttribute =
	new RuntimeVisibleParameterAnnotationsAttribute(constantAdder.addConstant(clazz, runtimeVisibleParameterAnnotationsAttribute.u2attributeNameIndex),
	0,
	new int[runtimeVisibleParameterAnnotationsAttribute.u1parametersCount],
	parameterAnnotations);

	// Add the annotations.
	runtimeVisibleParameterAnnotationsAttribute.annotationsAccept(clazz,
	method,
	new AnnotationAdder(targetClass,
	newParameterAnnotationsAttribute));

	// Add it to the target.
	attributesEditor.addAttribute(newParameterAnnotationsAttribute);
	}


	public void visitRuntimeInvisibleParameterAnnotationsAttribute(Clazz clazz, Method method, RuntimeInvisibleParameterAnnotationsAttribute runtimeInvisibleParameterAnnotationsAttribute)
	{
	// Create a new annotations attribute.
	Annotation[][] parameterAnnotations =
	new Annotation[runtimeInvisibleParameterAnnotationsAttribute.u1parametersCount][];

	Arrays.fill(parameterAnnotations, EMPTY_ANNOTATIONS);

	RuntimeInvisibleParameterAnnotationsAttribute newParameterAnnotationsAttribute =
	new RuntimeInvisibleParameterAnnotationsAttribute(constantAdder.addConstant(clazz, runtimeInvisibleParameterAnnotationsAttribute.u2attributeNameIndex),
	0,
	new int[runtimeInvisibleParameterAnnotationsAttribute.u1parametersCount],
	parameterAnnotations);

	// Add the annotations.
	runtimeInvisibleParameterAnnotationsAttribute.annotationsAccept(clazz,
	method,
	new AnnotationAdder(targetClass,
	newParameterAnnotationsAttribute));

	// Add it to the target.
	attributesEditor.addAttribute(newParameterAnnotationsAttribute);
	}


	public void visitAnnotationDefaultAttribute(Clazz clazz, Method method, AnnotationDefaultAttribute annotationDefaultAttribute)
	{
	// Create a new annotation default attribute.
	AnnotationDefaultAttribute newAnnotationDefaultAttribute =
	new AnnotationDefaultAttribute(constantAdder.addConstant(clazz, annotationDefaultAttribute.u2attributeNameIndex),
	null);

	// Add the annotations.
	annotationDefaultAttribute.defaultValueAccept(clazz,
	new ElementValueAdder(targetClass,
	newAnnotationDefaultAttribute,
	false));

	// Add it to the target.
	attributesEditor.addAttribute(newAnnotationDefaultAttribute);
	}
	}