/*******************************************************************************
* Copyright (c) 2010, 2014 Willink Transformations and others.
* 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:
* E.D.Willink - Initial API and implementation
*******************************************************************************/
package org.eclipse.ocl.pivot.library.collection;
import org.eclipse.jdt.annotation.NonNull;
import org.eclipse.jdt.annotation.Nullable;
import org.eclipse.ocl.pivot.library.AbstractSimpleTernaryOperation;
import org.eclipse.ocl.pivot.values.SequenceValue;
/**
* SequenceSubSequenceOperation realises the OrderedSet::subSequence() library operation.
*/
public class SequenceSubSequenceOperation extends AbstractSimpleTernaryOperation
{
public static final @NonNull SequenceSubSequenceOperation INSTANCE = new SequenceSubSequenceOperation();
@Override
public @NonNull SequenceValue evaluate(@Nullable Object sourceValue, @Nullable Object firstArgumentValue, @Nullable Object secondArgumentValue) {
SequenceValue selfValue = asSequenceValue(sourceValue);
Integer fromValue = asInteger(firstArgumentValue);
Integer toValue = asInteger(secondArgumentValue);
return selfValue.subSequence(fromValue, toValue);
}
}