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AspectJ tools most notably contains the AspectJ compiler (AJC). AJC applies aspects to Java classes during compilation, fully replacing Javac for plain Java classes and also compiling native AspectJ or annotation-based @AspectJ syntax. Furthermore, AJC can weave aspects into existing class files in a post-compile binary weaving step. This library is a superset of AspectJ weaver and hence also of AspectJ runtime.

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/* *******************************************************************
 * Copyright (c) 2008 Contributors
 * All rights reserved.
 * This program and the accompanying materials are made available
 * under the terms of the Eclipse Public License v 2.0
 * which accompanies this distribution and is available at
 * https://www.eclipse.org/org/documents/epl-2.0/EPL-2.0.txt
 *
 * Contributors:
 *	 Andy Clement
 * ******************************************************************/
package org.aspectj.weaver.bcel.asm;

/**
 * Determines if a version of asm is around that will enable us to add stack map attributes to classes that we produce.
 *
 * @author Andy Clement
 */
public class AsmDetector {
	public static final String CLASS_READER = "aj.org.objectweb.asm.ClassReader";
	public static final String CLASS_VISITOR = "aj.org.objectweb.asm.ClassVisitor";
	public static boolean isAsmAround;
	public static Throwable rootCause;

	static {
		try {
			Class reader = Class.forName(CLASS_READER);
			Class visitor = Class.forName(CLASS_VISITOR);
			reader.getMethod("accept", visitor, Integer.TYPE);
			isAsmAround = true;
		} catch (Exception e) {
			isAsmAround = false;
			rootCause = e;
		}
		//System.out.println(isAsmAround ? "ASM detected" : "No ASM found");
	}
}