/*******************************************************************************
 * Copyright (c) 2008 IONA Technologies PLC
 * 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:
 * IONA Technologies PLC - initial API and implementation
 *******************************************************************************/
package org.eclipse.jst.ws.internal.jaxws.core.annotations.validation;

import java.util.Collection;

import org.eclipse.jst.ws.annotations.core.processor.AbstractAnnotationProcessor;
import org.eclipse.jst.ws.internal.jaxws.core.JAXWSCoreMessages;

import com.sun.mirror.apt.Messager;
import com.sun.mirror.declaration.AnnotationMirror;
import com.sun.mirror.declaration.AnnotationTypeDeclaration;
import com.sun.mirror.declaration.Declaration;
import com.sun.mirror.declaration.MethodDeclaration;

/**
 * 
 * @author sclarke
 *
 */
public class OnewayNoReturnValueRule extends AbstractAnnotationProcessor {
    
    public OnewayNoReturnValueRule() {
    }
    
    @Override
    public void process() {
        Messager messager = environment.getMessager();

        AnnotationTypeDeclaration annotationDeclaration = (AnnotationTypeDeclaration) environment
                .getTypeDeclaration("javax.jws.Oneway"); //$NON-NLS-1$

        Collection<Declaration> annotatedTypes = environment
                .getDeclarationsAnnotatedWith(annotationDeclaration);

        for (Declaration declaration : annotatedTypes) {
            
            if (declaration instanceof MethodDeclaration) {
                MethodDeclaration methodDeclaration = (MethodDeclaration) declaration;
                if (!methodDeclaration.getReturnType().equals(environment.getTypeUtils()
                        .getVoidType())) {
                    Collection<AnnotationMirror> annotationMirrors = declaration.getAnnotationMirrors();
                    for (AnnotationMirror mirror : annotationMirrors) {
                        if ( mirror.getAnnotationType().toString().equals(annotationDeclaration
                              .getQualifiedName())) {
                            messager.printError(mirror.getPosition(), JAXWSCoreMessages
                                    .ONEWAY_ANNOTATION_PROCESSOR_NO_RETURN_VALUE_ERROR_MESSAGE); 
                        }
                    }
                }
            }
        }
    }

}