/*****************************************************************************
 * Copyright (c) 2019 CEA LIST, and others.
 *
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License 2.0
 * which accompanies this distribution, and is available at
 * https://www.eclipse.org/legal/epl-2.0/
 *
 * SPDX-License-Identifier: EPL-2.0
 *
 * Contributors:
 *   Nicolas FAUVERGUE (CEA LIST) nicolas.fauvergue@cea.fr - Initial API and implementation
 *
 *****************************************************************************/

package org.eclipse.papyrus.sysml16.service.types.matcher;

import org.eclipse.emf.ecore.EObject;
import org.eclipse.gmf.runtime.emf.type.core.IElementMatcher;
import org.eclipse.papyrus.sysml16.blocks.Block;
import org.eclipse.uml2.uml.AggregationKind;
import org.eclipse.uml2.uml.Class;
import org.eclipse.uml2.uml.Port;
import org.eclipse.uml2.uml.Property;
import org.eclipse.uml2.uml.Type;
import org.eclipse.uml2.uml.util.UMLUtil;

/**
 * Test if current {@link Property} is a {@link Block} Reference
 */
public class ReferencePropertyMatcher implements IElementMatcher {

	/**
	 * {@inheritDoc}
	 */
	@Override
	public boolean matches(EObject eObject) {
		boolean isMatch = false;
		if ((eObject instanceof Property) && !(eObject instanceof Port)) {
			Property element = (Property) eObject;
			// The property is not a composition and has a type
			Type type = element.getType();
			if (type != null && (element.getAggregation() != AggregationKind.COMPOSITE_LITERAL)) {
				// Moreover its type has to be a Block (type is tested as class before for performance)
				isMatch = type instanceof Class && (UMLUtil.getStereotypeApplication(type, Block.class) != null);
			}
		}
		return isMatch;
	}

}