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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     initial implementation
 * ******************************************************************/
package org.aspectj.weaver.bcel;

import org.aspectj.weaver.Advice;
import org.aspectj.weaver.AjAttribute;
import org.aspectj.weaver.ConcreteTypeMunger;
import org.aspectj.weaver.IWeavingSupport;
import org.aspectj.weaver.Member;
import org.aspectj.weaver.ResolvedMember;
import org.aspectj.weaver.ResolvedType;
import org.aspectj.weaver.ResolvedTypeMunger;
import org.aspectj.weaver.ast.Var;
import org.aspectj.weaver.patterns.PerClause;
import org.aspectj.weaver.patterns.Pointcut;

/**
 * Bcel implementation of the weaving support required in a BcelWorld which will actually modify bytecode.
 *
 * @author Andy Clement
 */
public class BcelWeavingSupport implements IWeavingSupport {

	public Advice createAdviceMunger(AjAttribute.AdviceAttribute attribute, Pointcut pointcut, Member signature,
			ResolvedType concreteAspect) {
		// System.err.println("concrete advice: " + signature + " context " +
		// sourceContext);
		return new BcelAdvice(attribute, pointcut, signature, concreteAspect);
	}

	public ConcreteTypeMunger makeCflowStackFieldAdder(ResolvedMember cflowField) {
		return new BcelCflowStackFieldAdder(cflowField);
	}

	public ConcreteTypeMunger makeCflowCounterFieldAdder(ResolvedMember cflowField) {
		return new BcelCflowCounterFieldAdder(cflowField);
	}

	/**
	 * Register a munger for perclause @AJ aspect so that we add aspectOf(..) to them as needed
	 *
	 * @param aspect
	 * @param kind
	 * @return munger
	 */
	public ConcreteTypeMunger makePerClauseAspect(ResolvedType aspect, PerClause.Kind kind) {
		return new BcelPerClauseAspectAdder(aspect, kind);
	}

	public Var makeCflowAccessVar(ResolvedType formalType, Member cflowField, int arrayIndex) {
		return new BcelCflowAccessVar(formalType, cflowField, arrayIndex);
	}

	public ConcreteTypeMunger concreteTypeMunger(ResolvedTypeMunger munger, ResolvedType aspectType) {
		return new BcelTypeMunger(munger, aspectType);
	}

	public ConcreteTypeMunger createAccessForInlineMunger(ResolvedType aspect) {
		return new BcelAccessForInlineMunger(aspect);
	}

}