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/*******************************************************************************
* Copyright (c) 2010-2017, Gabor Bergmann, IncQueryLabs Ltd.
* This program and the accompanying materials are made available under the
* terms of the Eclipse Public License v. 2.0 which is available at
* http://www.eclipse.org/legal/epl-v20.html.
*
* SPDX-License-Identifier: EPL-2.0
*******************************************************************************/
package tools.refinery.viatra.runtime.matchers.tuple;
import java.util.Objects;
/**
* Flat tuple with statically known arity of 2.
*
* @author Gabor Bergmann
* @since 1.7
*
*/
public final class FlatTuple2 extends BaseFlatTuple {
private final Object element0;
private final Object element1;
protected FlatTuple2(Object element0, Object element1) {
this.element0 = element0;
this.element1 = element1;
calcHash();
}
@Override
public int getSize() {
return 2;
}
@Override
public Object get(int index) {
switch(index) {
case 0 : return element0;
case 1 : return element1;
default: throw raiseIndexingError(index);
}
}
@Override
protected boolean internalEquals(ITuple other) {
return 2 == other.getSize() &&
Objects.equals(element0, other.get(0)) &&
Objects.equals(element1, other.get(1));
}
}
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