Copyright (c) 2005,2018 Contributors.
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://eclipse.org/legal/epl-v10.html
/*******************************************************************************
 * Copyright (c) 2005,2018 Contributors.
 * 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://eclipse.org/legal/epl-v10.html
 *******************************************************************************/
package org.aspectj.weaver.loadtime;

import java.lang.instrument.ClassFileTransformer;
import java.lang.instrument.IllegalClassFormatException;
import java.security.ProtectionDomain;

Java 1.5 adapter for class pre processor
Author:
Alexandre Vasseur, Andy Clement/**
 * Java 1.5 adapter for class pre processor
 * 
 * @author Alexandre Vasseur
 * @author Andy Clement
 */
public class ClassPreProcessorAgentAdapter implements ClassFileTransformer {

	private static ClassPreProcessor classPreProcessor;

	static {
		try {
			classPreProcessor = new Aj();
			classPreProcessor.initialize();
		} catch (Exception e) {
			throw new ExceptionInInitializerError("could not initialize JSR163 preprocessor due to: " + e.toString());
		}
	}

	
Invokes the weaver to modify some set of input bytes.
Params:
loader – the defining class loader
className – the name of class being loaded
classBeingRedefined – is set when hotswap is being attempted
protectionDomain – the protection domain for the class being loaded
bytes – the incoming bytes (before weaving)
Returns:
the woven bytes/**
	 * Invokes the weaver to modify some set of input bytes.
	 * 
	 * @param loader the defining class loader
	 * @param className the name of class being loaded
	 * @param classBeingRedefined is set when hotswap is being attempted
	 * @param protectionDomain the protection domain for the class being loaded
	 * @param bytes the incoming bytes (before weaving)
	 * @return the woven bytes
	 */
	@Override
	public byte[] transform(ClassLoader loader, String className, Class<?> classBeingRedefined, ProtectionDomain protectionDomain,
			byte[] bytes) throws IllegalClassFormatException {
		if (classBeingRedefined != null) {
			System.err.println("INFO: (Enh120375):  AspectJ attempting reweave of '" + className + "'");
			classPreProcessor.prepareForRedefinition(loader, className);
		}
		return classPreProcessor.preProcess(className, bytes, loader, protectionDomain);
	}
}