Chris Aniszczyk
14 years ago
committed by
Code Review
7 changed files with 112 additions and 19 deletions
@ -0,0 +1,79 @@
|
||||
/* |
||||
* Copyright (C) 2010, Google Inc. |
||||
* and other copyright owners as documented in the project's IP log. |
||||
* |
||||
* This program and the accompanying materials are made available |
||||
* under the terms of the Eclipse Distribution License v1.0 which |
||||
* accompanies this distribution, is reproduced below, and is |
||||
* available at http://www.eclipse.org/org/documents/edl-v10.php
|
||||
* |
||||
* All rights reserved. |
||||
* |
||||
* Redistribution and use in source and binary forms, with or |
||||
* without modification, are permitted provided that the following |
||||
* conditions are met: |
||||
* |
||||
* - Redistributions of source code must retain the above copyright |
||||
* notice, this list of conditions and the following disclaimer. |
||||
* |
||||
* - Redistributions in binary form must reproduce the above |
||||
* copyright notice, this list of conditions and the following |
||||
* disclaimer in the documentation and/or other materials provided |
||||
* with the distribution. |
||||
* |
||||
* - Neither the name of the Eclipse Foundation, Inc. nor the |
||||
* names of its contributors may be used to endorse or promote |
||||
* products derived from this software without specific prior |
||||
* written permission. |
||||
* |
||||
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND |
||||
* CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, |
||||
* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
||||
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
||||
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR |
||||
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
||||
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
||||
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; |
||||
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER |
||||
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, |
||||
* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
||||
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF |
||||
* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
||||
*/ |
||||
|
||||
package org.eclipse.jgit.diff; |
||||
|
||||
/** |
||||
* Compares two {@link Sequence}s to create an {@link EditList} of changes. |
||||
* |
||||
* An algorithm's {@code diff} method must be callable from concurrent threads |
||||
* without data collisions. This permits some algorithms to use a singleton |
||||
* pattern, with concurrent invocations using the same singleton. Other |
||||
* algorithms may support parameterization, in which case the caller can create |
||||
* a unique instance per thread. |
||||
*/ |
||||
public interface DiffAlgorithm { |
||||
/** |
||||
* Compare two sequences and identify a list of edits between them. |
||||
* |
||||
* @param <S> |
||||
* type of sequence being compared. |
||||
* @param <C> |
||||
* type of comparator to evaluate the sequence elements. |
||||
* @param cmp |
||||
* the comparator supplying the element equivalence function. |
||||
* @param a |
||||
* the first (also known as old or pre-image) sequence. Edits |
||||
* returned by this algorithm will reference indexes using the |
||||
* 'A' side: {@link Edit#getBeginA()}, {@link Edit#getEndA()}. |
||||
* @param b |
||||
* the second (also known as new or post-image) sequence. Edits |
||||
* returned by this algorithm will reference indexes using the |
||||
* 'B' side: {@link Edit#getBeginB()}, {@link Edit#getEndB()}. |
||||
* @return a modifiable edit list comparing the two sequences. If empty, the |
||||
* sequences are identical according to {@code cmp}'s rules. The |
||||
* result list is never null. |
||||
*/ |
||||
public <S extends Sequence, C extends SequenceComparator<? super S>> EditList diff( |
||||
C cmp, S a, S b); |
||||
} |
Loading…
Reference in new issue