org.eclipse.objectteams.otredyn.bytecode.asm.AddInterfaceAdapter.java Source code

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Here is the source code for org.eclipse.objectteams.otredyn.bytecode.asm.AddInterfaceAdapter.java

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/**********************************************************************
 * This file is part of "Object Teams Dynamic Runtime Environment"
 * 
 * Copyright 2009, 2014 Oliver Frank and others.
 * 
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 * 
 * Please visit http://www.eclipse.org/objectteams for updates and contact.
 * 
 * Contributors:
 *      Oliver Frank - Initial API and implementation
 *      Stephan Herrmann - Initial API and implementation
 **********************************************************************/
package org.eclipse.objectteams.otredyn.bytecode.asm;

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

import static org.eclipse.objectteams.otredyn.bytecode.asm.AsmBoundClass.ASM_API;

/**
 * Adds an interface to the bytecode of a class
 * @author Oliver Frank
 *
 */
public class AddInterfaceAdapter extends ClassVisitor {
    private String interfaceName;

    public AddInterfaceAdapter(ClassVisitor cv, String interfaceName) {
        super(ASM_API, cv);
        this.interfaceName = interfaceName;
    }

    @Override
    public void visit(int version, int access, String name, String signature, String superName,
            String[] interfaces) {
        String[] newInterfaces = new String[interfaces.length + 1];
        System.arraycopy(interfaces, 0, newInterfaces, 0, interfaces.length);
        newInterfaces[interfaces.length] = interfaceName;
        // Assumption: when it should potentially be a bound baseclass it may have to be public, too:
        access &= ~(Opcodes.ACC_PRIVATE | Opcodes.ACC_PROTECTED);
        access |= Opcodes.ACC_PUBLIC;
        super.visit(version, access, name, signature, superName, newInterfaces);
    }

    @Override
    public MethodVisitor visitMethod(int arg0, String arg1, String arg2, String arg3, String[] arg4) {
        return null; // also consider other visitors
    }
}