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Source code of the class part of aspectjweaver version 1.8.9

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 * Copyright (c) 2004 IBM Corporation 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
 * Contributors:
 *     IBM Corporation - initial API and implementation
 *      (Andy Clement)

package org.aspectj.weaver.bcel;

import org.aspectj.apache.bcel.Constants;
import org.aspectj.apache.bcel.generic.FieldGen;
import org.aspectj.apache.bcel.generic.InstructionFactory;
import org.aspectj.apache.bcel.generic.InstructionList;
import org.aspectj.apache.bcel.generic.ObjectType;
import org.aspectj.apache.bcel.generic.Type;
import org.aspectj.weaver.Member;
import org.aspectj.weaver.NameMangler;
import org.aspectj.weaver.ResolvedMember;
import org.aspectj.weaver.ResolvedType;

 * This type munger will modify a given class (see the munge() method) to include a field representing a CflowCounter object.
public class BcelCflowCounterFieldAdder extends BcelTypeMunger {
	private ResolvedMember cflowCounterField;

	public BcelCflowCounterFieldAdder(ResolvedMember cflowCounterField) {
		super(null, (ResolvedType) cflowCounterField.getDeclaringType());
		this.cflowCounterField = cflowCounterField;

	public boolean munge(BcelClassWeaver weaver) {
		LazyClassGen gen = weaver.getLazyClassGen();

		// Only munge one type!
		if (!gen.getType().equals(cflowCounterField.getDeclaringType()))
			return false;

		// Create the field declaration.
		// Something like: "public static final CflowCounter ajc$cflowCounter$0;"
		FieldGen f = new FieldGen(cflowCounterField.getModifiers(), BcelWorld.makeBcelType(cflowCounterField.getReturnType()),
				cflowCounterField.getName(), gen.getConstantPool());

		gen.addField(f, getSourceLocation());

		// Modify the ajc$preClinit() method to initialize it.
		// Something like: "ajc$cflowCounter$0 = new CflowCounter();"
		LazyMethodGen clinit = gen.getAjcPreClinit(); // StaticInitializer();
		InstructionList setup = new InstructionList();
		InstructionFactory fact = gen.getFactory();

		setup.append(fact.createNew(new ObjectType(NameMangler.CFLOW_COUNTER_TYPE)));
		setup.append(fact.createInvoke(NameMangler.CFLOW_COUNTER_TYPE, "", Type.VOID, new Type[0], Constants.INVOKESPECIAL));

		setup.append(Utility.createSet(fact, cflowCounterField));

		return true;

	public ResolvedMember getMatchingSyntheticMember(Member member) {
		return null;

	public ResolvedMember getSignature() {
		return cflowCounterField;

	public boolean matches(ResolvedType onType) {
		return onType.equals(cflowCounterField.getDeclaringType());

	public boolean existsToSupportShadowMunging() {
		return true;

	public String toString() {
		return "(BcelTypeMunger: CflowField " + cflowCounterField.getDeclaringType().getName() + " " + cflowCounterField.getName()
				+ ")";


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