plugins/org.eclipse.qvtd.atl/src/org/eclipse/qvtd/atl/atl2qvtr/Helper4getHelper.java

package org.eclipse.qvtd.atl.atl2qvtr;

import org.eclipse.emf.ecore.EObject;
import org.eclipse.jdt.annotation.NonNull;
import org.eclipse.jdt.annotation.Nullable;
import org.eclipse.m2m.atl.common.ATL.Helper;
import org.eclipse.m2m.atl.common.ATL.LocatedElement;
import org.eclipse.ocl.pivot.evaluation.Executor;
import org.eclipse.ocl.pivot.ids.TypeId;
import org.eclipse.ocl.pivot.library.AbstractUnaryOperation;

public class Helper4getHelper extends AbstractUnaryOperation
{
	public static final @NonNull Helper4getHelper INSTANCE = new Helper4getHelper();

	//		query getHelper(element : atlMM::LocatedElement) : atlMM::Helper[1] {
	//			element->closure(e : ocl::OclElement | e.oclContainer())->selectByKind(atlMM::Helper)->any(true)
	//		}
	@Override
	public @Nullable Helper evaluate(@NonNull Executor executor, @NonNull TypeId returnTypeId, @Nullable Object sourceValue) {
		for (EObject eObject = (LocatedElement)sourceValue; eObject != null; eObject = eObject.eContainer()) {
			if (eObject instanceof Helper) {
				return (Helper) eObject;
			}
		}
		return null; //throwInvalidValueException();
	}
}