de.tuberlin.uebb.jbop.optimizer.utils.rename.ClassRenamer.java Source code

Introduction

Here is the source code for de.tuberlin.uebb.jbop.optimizer.utils.rename.ClassRenamer.java

Source

/*
 * Copyright (C) 2013 uebb.tu-berlin.de.
 * 
 * This file is part of JBOP (Java Bytecode OPtimizer).
 * 
 * JBOP 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 3 of the License, or
 * (at your option) any later version.
 * 
 * JBOP 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 JBOP. If not, see <http://www.gnu.org/licenses/>.
 */
package de.tuberlin.uebb.jbop.optimizer.utils.rename;

import org.objectweb.asm.ClassVisitor;
import org.objectweb.asm.ClassWriter;
import org.objectweb.asm.MethodVisitor;
import org.objectweb.asm.Opcodes;

/**
 * The Class ClassRenamer.
 * 
 * Renames a class.
 * 
 * @author Christopher Ewest
 */
public class ClassRenamer extends ClassVisitor {

    private final NameFixer fixer;

    /**
     * Instantiates a new class renamer.
     * 
     * @param parent
     *          the parent
     * @param newName
     *          the new name
     */
    public ClassRenamer(final ClassWriter parent, final String newName) {
        super(Opcodes.ASM5, parent);
        fixer = new NameFixer(newName);
    }

    @Override
    public void visit(final int version, final int access, final String name, final String signature,
            final String superName, final String[] interfaces) {
        fixer.add(name);
        super.visit(version, access, fixer.getNewName(), signature, superName, interfaces);
    }

    @Override
    public MethodVisitor visitMethod(final int access, final String name, final String desc, final String signature,
            final String[] exceptions) {
        MethodVisitor mv = super.visitMethod(access, name, fixer.fix(desc), fixer.fix(signature), exceptions);
        if ((mv != null) && ((access & Opcodes.ACC_ABSTRACT) == 0)) {
            mv = new MethodRenamer(mv, fixer);
        }
        return mv;
    }

    /**
     * @return the byte[] of the processed class
     */
    public byte[] toByteArray() {
        return ((ClassWriter) cv).toByteArray();
    }
}