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

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Here is the source code for org.eclipse.objectteams.otredyn.bytecode.asm.CreateSuperCallInCallOrigAdapter.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.eclipse.objectteams.otredyn.transformer.names.ConstantMembers;
import org.objectweb.asm.Opcodes;
import org.objectweb.asm.Type;
import org.objectweb.asm.tree.InsnList;
import org.objectweb.asm.tree.InsnNode;
import org.objectweb.asm.tree.MethodInsnNode;
import org.objectweb.asm.tree.MethodNode;

/**
 * This class creates the instructions, that are needed
 * to call super.callOrig(boundMethodId, args)
 * @author Oliver Frank
 */
public class CreateSuperCallInCallOrigAdapter extends AbstractTransformableClassNode {

    private int joinpointId;
    private String superClassName;

    public CreateSuperCallInCallOrigAdapter(String superClassName, int joinpointId) {
        this.superClassName = superClassName;
        this.joinpointId = joinpointId;
    }

    @Override
    public boolean transform() {
        MethodNode callOrig = getMethod(ConstantMembers.callOrig);
        InsnList instructions = new InsnList();

        Type[] args = Type.getArgumentTypes(callOrig.desc);
        addInstructionsForLoadArguments(instructions, args, false);

        instructions.add(new MethodInsnNode(Opcodes.INVOKESPECIAL, superClassName,
                ConstantMembers.callOrig.getName(), ConstantMembers.callOrig.getSignature()));
        instructions.add(new InsnNode(Opcodes.ARETURN));
        addNewLabelToSwitch(callOrig.instructions, instructions, joinpointId);
        callOrig.maxStack = Math.max(callOrig.maxStack, args.length + 1);
        return true;
    }
}