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annotate src/org/tmatesoft/hg/util/Pair.java @ 709:497e697636fc

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Report merged lines as changed block if possible, not as a sequence of added/deleted blocks. To facilitate access to merge parent lines AddBlock got mergeLineAt() method that reports index of the line in the second parent (if any), while insertedAt() has been changed to report index in the first parent always
author Artem Tikhomirov <tikhomirov.artem@gmail.com>
date Wed, 21 Aug 2013 16:23:27 +0200
parents 5311e041d2dd
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1 /*
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2 * Copyright (c) 2011-2012 TMate Software Ltd
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3 *
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4 * This program is free software; you can redistribute it and/or modify
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5 * it under the terms of the GNU General Public License as published by
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6 * the Free Software Foundation; version 2 of the License.
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7 *
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8 * This program is distributed in the hope that it will be useful,
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9 * but WITHOUT ANY WARRANTY; without even the implied warranty of
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10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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11 * GNU General Public License for more details.
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12 *
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13 * For information on how to redistribute this software under
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14 * the terms of a license other than GNU General Public License
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15 * contact TMate Software at support@hg4j.com
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16 */
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17 package org.tmatesoft.hg.util;
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18
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19
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20 /**
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21 * Nothing but a holder for two values.
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22 *
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23 * @author Artem Tikhomirov
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24 * @author TMate Software Ltd.
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25 */
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26 public final class Pair<T1,T2> {
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27 private final T1 value1;
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28 private final T2 value2;
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29
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30 public Pair(T1 v1, T2 v2) {
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31 value1 = v1;
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32 value2 = v2;
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33 }
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34
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35 public T1 first() {
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36 return value1;
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37 }
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38 public T2 second() {
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39 return value2;
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40 }
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41 public boolean hasFirst() {
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42 return value1 != null;
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43 }
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44 public boolean hasSecond() {
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45 return value2 != null;
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46 }
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47
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48 @Override
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49 public String toString() {
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50 StringBuilder sb = new StringBuilder();
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51 sb.append('<');
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52 sb.append(first());
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53 sb.append(':');
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54 sb.append(second());
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55 sb.append('>');
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56 return sb.toString();
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57 }
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58 }
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