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/*
* Copyright (C) 2010, Google Inc. and others
*
* This program and the accompanying materials are made available under the
* terms of the Eclipse Distribution License v. 1.0 which is available at
* https://www.eclipse.org/org/documents/edl-v10.php.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
package org.eclipse.jgit.diff;
/**
* Wraps a {@link org.eclipse.jgit.diff.Sequence} to assign hash codes to
* elements.
* <p>
* This sequence acts as a proxy for the real sequence, caching element hash
* codes so they don't need to be recomputed each time. Sequences of this type
* must be used with a {@link org.eclipse.jgit.diff.HashedSequenceComparator}.
* <p>
* To construct an instance of this type use
* {@link org.eclipse.jgit.diff.HashedSequencePair}.
*
* @param <S>
* the base sequence type.
*/
public final class HashedSequence<S extends Sequence> extends Sequence {
final S base;
final int[] hashes;
HashedSequence(S base, int[] hashes) {
this.base = base;
this.hashes = hashes;
}
/** {@inheritDoc} */
@Override
public int size() {
return base.size();
}
}
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