net.orfjackal.retrolambda.defaultmethods.InterfaceToHelperRewriter.java Source code

Introduction

Here is the source code for net.orfjackal.retrolambda.defaultmethods.InterfaceToHelperRewriter.java

Source

// Copyright  2013-2014 Esko Luontola <www.orfjackal.net>
// This software is released under the Apache License 2.0.
// The license text is at http://www.apache.org/licenses/LICENSE-2.0

package net.orfjackal.retrolambda.defaultmethods;

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

/**
 * Created by arneball on 2014-08-24.
 */
class InterfaceToHelperRewriter extends MethodVisitor implements Opcodes {
    public InterfaceToHelperRewriter(MethodVisitor mv) {
        super(ASM5, mv);
    }

    @Override
    public void visitMethodInsn(int opcode, String owner, String name, String desc, boolean itf) {
        boolean belongsToUs = Helpers.interfaceBelongsToUs(owner);
        String newOwner = belongsToUs ? owner + "$helper" : owner;
        if (opcode == INVOKESPECIAL && itf) {
            super.visitMethodInsn(INVOKESTATIC, newOwner, name, Helpers.addParam(desc, owner), false);
        } else if (opcode == INVOKESTATIC && itf) {
            String newName = belongsToUs ? name + "$static" : name;
            super.visitMethodInsn(INVOKESTATIC, newOwner, newName, desc, false);
        } else {
            super.visitMethodInsn(opcode, owner, name, desc, itf);
        }
    }
}