File ChangeDelta.java
Coverage histogram
82% of files have more coverage
Classes
| Class | Line # | Actions | |||||
|---|---|---|---|---|---|---|---|
| ChangeDelta | 34 | 22 | 0% | 8 | 31 |
Contributing tests
This file is covered by 23 tests.
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Source view
| 1 | /* | |
| 2 | * See the NOTICE file distributed with this work for additional | |
| 3 | * information regarding copyright ownership. | |
| 4 | * | |
| 5 | * This is free software; you can redistribute it and/or modify it | |
| 6 | * under the terms of the GNU Lesser General Public License as | |
| 7 | * published by the Free Software Foundation; either version 2.1 of | |
| 8 | * the License, or (at your option) any later version. | |
| 9 | * | |
| 10 | * This software is distributed in the hope that it will be useful, | |
| 11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
| 13 | * Lesser General Public License for more details. | |
| 14 | * | |
| 15 | * You should have received a copy of the GNU Lesser General Public | |
| 16 | * License along with this software; if not, write to the Free | |
| 17 | * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA | |
| 18 | * 02110-1301 USA, or see the FSF site: http://www.fsf.org. | |
| 19 | */ | |
| 20 | package org.xwiki.diff.internal; | |
| 21 | ||
| 22 | import java.util.List; | |
| 23 | ||
| 24 | import org.xwiki.diff.Chunk; | |
| 25 | import org.xwiki.diff.PatchException; | |
| 26 | ||
| 27 | /** | |
| 28 | * Implementation of {@link org.xwiki.diff.Delta} representing a chunk which has been modified between previous and next | |
| 29 | * version. | |
| 30 | * | |
| 31 | * @param <E> the type of compared elements | |
| 32 | * @version $Id: f41760c5b966b75f63a58d000c681a4ec4059b84 $ | |
| 33 | */ | |
| 34 | public class ChangeDelta<E> extends AbstractDelta<E> | |
| 35 | { | |
| 36 | /** | |
| 37 | * @param previous the chunk before the modification | |
| 38 | * @param next the chunk after the modification | |
| 39 | */ | |
| 40 | 0 |  public ChangeDelta(Chunk<E> previous, Chunk<E> next) |
| 41 | { | |
| 42 | 0 | super(previous, next, Type.CHANGE); |
| 43 | } | |
| 44 | ||
| 45 | /** | |
| 46 | * @param original the chunk before the modification | |
| 47 | * @param revised the chunk after the modification | |
| 48 | */ | |
| 49 | 78 | public ChangeDelta(difflib.Chunk<E> original, difflib.Chunk<E> revised) |
| 50 | { | |
| 51 | 78 | super(original, revised, Type.CHANGE); |
| 52 | } | |
| 53 | ||
| 54 | 0 | @Override |
| 55 | public void apply(List<E> target) throws PatchException | |
| 56 | { | |
| 57 | 0 | verify(target); |
| 58 | ||
| 59 | 0 | int index = getPrevious().getIndex(); |
| 60 | 0 | int size = getPrevious().size(); |
| 61 | 0 | for (int i = 0; i < size; i++) { |
| 62 | 0 | target.remove(index); |
| 63 | } | |
| 64 | ||
| 65 | 0 | int i = 0; |
| 66 | 0 | for (E element : getNext().getElements()) { |
| 67 | 0 | target.add(index + i, element); |
| 68 | 0 | i++; |
| 69 | } | |
| 70 | } | |
| 71 | ||
| 72 | 0 | @Override |
| 73 | public void restore(List<E> target) | |
| 74 | { | |
| 75 | 0 | int index = getNext().getIndex(); |
| 76 | 0 | int size = getNext().size(); |
| 77 | 0 | for (int i = 0; i < size; i++) { |
| 78 | 0 | target.remove(index); |
| 79 | } | |
| 80 | ||
| 81 | 0 | int i = 0; |
| 82 | 0 | for (E element : getPrevious().getElements()) { |
| 83 | 0 | target.add(index + i, element); |
| 84 | 0 | i++; |
| 85 | } | |
| 86 | } | |
| 87 | ||
| 88 | 0 | @Override |
| 89 | public void verify(List<E> target) throws PatchException | |
| 90 | { | |
| 91 | 0 | getPrevious().verify(target); |
| 92 | 0 | if (getPrevious().getIndex() > target.size()) { |
| 93 | 0 | throw new PatchException("Incorrect patch for delta: delta original position > target size"); |
| 94 | } | |
| 95 | } | |
| 96 | } |