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/*
* ProGuard -- shrinking, optimization, obfuscation, and preverification
* of Java bytecode.
*
* Copyright (c) 2002-2013 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.annotation.*;
import proguard.classfile.attribute.annotation.visitor.AnnotationVisitor;
import proguard.classfile.util.SimplifiedVisitor;
/**
* This AnnotationVisitor adds all annotations that it visits to the given
* target annotation element value, target annotation attribute, or target
* parameter annotation attribute.
*
* @author Eric Lafortune
*/
public class AnnotationAdder
extends SimplifiedVisitor
implements AnnotationVisitor
{
private static final ElementValue[] EMPTY_ELEMENT_VALUES = new ElementValue[0];
private final ProgramClass targetClass;
private final AnnotationElementValue targetAnnotationElementValue;
private final AnnotationsAttributeEditor annotationsAttributeEditor;
private final ParameterAnnotationsAttributeEditor parameterAnnotationsAttributeEditor;
private final ConstantAdder constantAdder;
/**
* Creates a new AnnotationAdder that will copy annotations into the given
* target annotation element value.
*/
public AnnotationAdder(ProgramClass targetClass,
AnnotationElementValue targetAnnotationElementValue)
{
this.targetClass = targetClass;
this.targetAnnotationElementValue = targetAnnotationElementValue;
this.annotationsAttributeEditor = null;
this.parameterAnnotationsAttributeEditor = null;
constantAdder = new ConstantAdder(targetClass);
}
/**
* Creates a new AnnotationAdder that will copy annotations into the given
* target annotations attribute.
*/
public AnnotationAdder(ProgramClass targetClass,
AnnotationsAttribute targetAnnotationsAttribute)
{
this.targetClass = targetClass;
this.targetAnnotationElementValue = null;
this.annotationsAttributeEditor = new AnnotationsAttributeEditor(targetAnnotationsAttribute);
this.parameterAnnotationsAttributeEditor = null;
constantAdder = new ConstantAdder(targetClass);
}
/**
* Creates a new AnnotationAdder that will copy annotations into the given
* target parameter annotations attribute.
*/
public AnnotationAdder(ProgramClass targetClass,
ParameterAnnotationsAttribute targetParameterAnnotationsAttribute)
{
this.targetClass = targetClass;
this.targetAnnotationElementValue = null;
this.annotationsAttributeEditor = null;
this.parameterAnnotationsAttributeEditor = new ParameterAnnotationsAttributeEditor(targetParameterAnnotationsAttribute);
constantAdder = new ConstantAdder(targetClass);
}
// Implementations for AnnotationVisitor.
public void visitAnnotation(Clazz clazz, Annotation annotation)
{
Annotation newAnnotation =
new Annotation(constantAdder.addConstant(clazz, annotation.u2typeIndex),
0,
annotation.u2elementValuesCount > 0 ?
new ElementValue[annotation.u2elementValuesCount] :
EMPTY_ELEMENT_VALUES);
// TODO: Clone array.
newAnnotation.referencedClasses = annotation.referencedClasses;
// Add the element values.
annotation.elementValuesAccept(clazz,
new ElementValueAdder(targetClass,
newAnnotation,
false));
// What's the target?
if (targetAnnotationElementValue != null)
{
// Simply set the completed annotation.
targetAnnotationElementValue.annotationValue = newAnnotation;
}
else
{
// Add the completed annotation.
annotationsAttributeEditor.addAnnotation(newAnnotation);
}
}
public void visitAnnotation(Clazz clazz, Method method, int parameterIndex, Annotation annotation)
{
Annotation newAnnotation =
new Annotation(constantAdder.addConstant(clazz, annotation.u2typeIndex),
0,
annotation.u2elementValuesCount > 0 ?
new ElementValue[annotation.u2elementValuesCount] :
EMPTY_ELEMENT_VALUES);
// TODO: Clone array.
newAnnotation.referencedClasses = annotation.referencedClasses;
// Add the element values.
annotation.elementValuesAccept(clazz,
new ElementValueAdder(targetClass,
newAnnotation,
false));
// Add the completed annotation.
parameterAnnotationsAttributeEditor.addAnnotation(parameterIndex, newAnnotation);
}
}
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