/* *******************************************************************
* Copyright (c) 2002 Palo Alto Research Center, Incorporated (PARC).
* 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://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* PARC initial implementation
* ******************************************************************/
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.Type;
import org.aspectj.weaver.Member;
import org.aspectj.weaver.NameMangler;
import org.aspectj.weaver.ResolvedMember;
import org.aspectj.weaver.ResolvedType;
public class BcelCflowStackFieldAdder extends BcelTypeMunger {
private ResolvedMember cflowStackField;
public BcelCflowStackFieldAdder(ResolvedMember cflowStackField) {
super(null, (ResolvedType) cflowStackField.getDeclaringType());
this.cflowStackField = cflowStackField;
}
@Override
public boolean munge(BcelClassWeaver weaver) {
LazyClassGen gen = weaver.getLazyClassGen();
if (!gen.getType().equals(cflowStackField.getDeclaringType())) {
return false;
}
FieldGen f = new FieldGen(cflowStackField.getModifiers(), BcelWorld.makeBcelType(cflowStackField.getReturnType()),
cflowStackField.getName(), gen.getConstantPool());
gen.addField(f, getSourceLocation());
LazyMethodGen clinit = gen.getAjcPreClinit(); // StaticInitializer();
InstructionList setup = new InstructionList();
InstructionFactory fact = gen.getFactory();
setup.append(fact.createNew(NameMangler.CFLOW_STACK_TYPE));
setup.append(InstructionFactory.createDup(1));
setup.append(fact.createInvoke(NameMangler.CFLOW_STACK_TYPE, "<init>", Type.VOID, Type.NO_ARGS, Constants.INVOKESPECIAL));
setup.append(Utility.createSet(fact, cflowStackField));
clinit.getBody().insert(setup);
return true;
}
@Override
public ResolvedMember getMatchingSyntheticMember(Member member) {
return null;
}
@Override
public ResolvedMember getSignature() {
return cflowStackField;
}
@Override
public boolean matches(ResolvedType onType) {
return onType.equals(cflowStackField.getDeclaringType());
}
@Override
public boolean existsToSupportShadowMunging() {
return true;
}
}