/*
* Copyright 2012, Stuart Douglas, and individual contributors as indicated
* by the @authors tag.
*
* This is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as
* published by the Free Software Foundation; either version 2.1 of
* the License, or (at your option) any later version.
*
* This software 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this software; if not, write to the Free
* Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
* 02110-1301 USA, or see the FSF site: http://www.fsf.org.
*/
package org.fakereplace.manip;
import java.util.Set;
import javassist.bytecode.AccessFlag;
import javassist.bytecode.AnnotationsAttribute;
import javassist.bytecode.AttributeInfo;
import javassist.bytecode.ClassFile;
import javassist.bytecode.MethodInfo;
import javassist.bytecode.annotation.Annotation;
import org.fakereplace.core.Constants;
import org.fakereplace.data.ModifiedMethod;
/**
* manipulator that removes the final attribute from methods
*
* @author Stuart Douglas <stuart.w.douglas@gmail.com>
*/
public class FinalMethodManipulator implements ClassManipulator {
public void clearRewrites(String className, ClassLoader classLoader) {
}
public boolean transformClass(ClassFile file, ClassLoader loader, boolean modifiableClass, final Set<MethodInfo> modifiedMethods) {
if (!modifiableClass) {
return false;
}
boolean modified = false;
for (Object i : file.getMethods()) {
MethodInfo m = (MethodInfo) i;
if ((m.getAccessFlags() & AccessFlag.FINAL) != 0) {
m.setAccessFlags(m.getAccessFlags() & ~AccessFlag.FINAL);
// ClassDataStore.addFinalMethod(file.getName(), m.getName(),
// m.getDescriptor());
AnnotationsAttribute at = (AnnotationsAttribute) m.getAttribute(AnnotationsAttribute.visibleTag);
if (at == null) {
at = new AnnotationsAttribute(file.getConstPool(), AnnotationsAttribute.visibleTag);
m.addAttribute(at);
}
at.addAnnotation(new Annotation(ModifiedMethod.class.getName(), file.getConstPool()));
m.addAttribute(new AttributeInfo(file.getConstPool(), Constants.FINAL_METHOD_ATTRIBUTE, new byte[0]));
modified = true;
}
}
return modified;
}
}