/* *******************************************************************
* 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 Common Public License v1.0
* which accompanies this distribution and is available at
* http://www.eclipse.org/legal/cpl-v10.html
*
* Contributors:
* PARC initial implementation
* ******************************************************************/
package org.aspectj.ajdt.internal.compiler.ast;
import org.aspectj.ajdt.internal.compiler.lookup.EclipseFactory;
import org.aspectj.ajdt.internal.compiler.lookup.EclipseSourceLocation;
import org.aspectj.bridge.IMessage;
import org.aspectj.bridge.ISourceLocation;
import org.aspectj.org.eclipse.jdt.internal.compiler.ASTVisitor;
import org.aspectj.org.eclipse.jdt.internal.compiler.ast.Expression;
import org.aspectj.org.eclipse.jdt.internal.compiler.ast.FieldReference;
import org.aspectj.org.eclipse.jdt.internal.compiler.ast.MessageSend;
import org.aspectj.org.eclipse.jdt.internal.compiler.ast.SuperReference;
import org.aspectj.org.eclipse.jdt.internal.compiler.ast.TypeDeclaration;
import org.aspectj.org.eclipse.jdt.internal.compiler.lookup.BlockScope;
import org.aspectj.org.eclipse.jdt.internal.compiler.lookup.ReferenceBinding;
import org.aspectj.org.eclipse.jdt.internal.compiler.lookup.Scope;
import org.aspectj.org.eclipse.jdt.internal.compiler.lookup.TypeBinding;
/**
* Walks the body of inter-type declarations and replaces SuperReference with InterSuperReference
*
* @author Jim Hugunin
*/
public class InterSuperFixerVisitor extends ASTVisitor {
InterTypeDeclaration dec;
ReferenceBinding onType;
TypeBinding superType;
private int depthCounter = 0; // Keeps track of whether we are inside any nested local type declarations
EclipseFactory world;
public InterSuperFixerVisitor(InterTypeDeclaration dec, EclipseFactory world, Scope scope) {
this.dec = dec;
this.onType = dec.onTypeBinding;
this.world = world;
// AMC with the java 5 compiler the superclass() of an interface is object,
// not a parent interface (if one exists)
if (onType.isInterface() && onType.superInterfaces().length == 1) {
superType=onType.superInterfaces()[0];
} else if (onType.superclass() != null) {
superType = onType.superclass();
} else if (onType.superInterfaces() == null || onType.superInterfaces().length == 0) {
superType = scope.getJavaLangObject();
} else if (onType.superInterfaces().length == 1) {
superType = onType.superInterfaces()[0];
} else {
superType = null;
}
}
public void endVisit(FieldReference ref, BlockScope scope) {
ref.receiver = fixReceiver(ref.receiver, scope);
}
public void endVisit(MessageSend send, BlockScope scope) {
send.receiver = fixReceiver(send.receiver, scope);
}
public boolean visit(TypeDeclaration localTypeDeclaration, BlockScope scope) {
depthCounter++;
return super.visit(localTypeDeclaration, scope);
}
public void endVisit(TypeDeclaration localTypeDeclaration,BlockScope scope) {
depthCounter--;
}
private Expression fixReceiver(Expression expression, BlockScope scope) {
if (depthCounter!=0) return expression; // Don't mess with super calls down in nested local type declarations (pr90143)
if (expression instanceof SuperReference) {
SuperReference superRef = (SuperReference) expression;
if (superType == null) {
ISourceLocation location =
new EclipseSourceLocation(scope.problemReporter().referenceContext.compilationResult(),
expression.sourceStart, expression.sourceEnd);
world.showMessage(IMessage.ERROR, "multiple supertypes for this interface", location, null);
dec.ignoreFurtherInvestigation = true;
}
//FIXME ??? note error
expression = new InterSuperReference(superRef, superType);
}
return expression;
}
}