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/*
* SPDX-FileCopyrightText: 2021-2023 The Refinery Authors <https://refinery.tools/>
*
* SPDX-License-Identifier: EPL-2.0
*/
package tools.refinery.store.tuple;
import static tools.refinery.store.tuple.TupleConstants.TUPLE_BEGIN;
import static tools.refinery.store.tuple.TupleConstants.TUPLE_END;
/**
* Singleton implementation to ensure only a single empty tuple exists.
*/
@SuppressWarnings("squid:S6548")
public final class Tuple0 implements Tuple {
public static final Tuple0 INSTANCE = new Tuple0();
private Tuple0() {
}
@Override
public int getSize() {
return 0;
}
@Override
public int get(int element) {
throw new IndexOutOfBoundsException(element);
}
@Override
public Tuple set(int element, int value) {
throw new IndexOutOfBoundsException(element);
}
@Override
public String toString() {
return TUPLE_BEGIN + TUPLE_END;
}
}
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