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annotate org.eclipse.jface.text/src/org/eclipse/jface/internal/text/revisions/Hunk.d @ 12:bc29606a740c

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Added dwt-addons in original directory structure of eclipse.org
author Frank Benoit <benoit@tionex.de>
date Sat, 14 Mar 2009 18:23:29 +0100
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children 6f068362a363
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1 /*******************************************************************************
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2 * Copyright (c) 2006 IBM Corporation and others.
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3 * All rights reserved. This program and the accompanying materials
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4 * are made available under the terms of the Eclipse Public License v1.0
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5 * which accompanies this distribution, and is available at
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6 * http://www.eclipse.org/legal/epl-v10.html
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7 *
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8 * Contributors:
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9 * IBM Corporation - initial API and implementation
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10 * Port to the D programming language:
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11 * Frank Benoit <benoit@tionex.de>
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12 *******************************************************************************/
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13 module org.eclipse.jface.internal.text.revisions.Hunk;
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14
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15 import org.eclipse.jface.internal.text.revisions.HunkComputer; // packageimport
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16 import org.eclipse.jface.internal.text.revisions.LineIndexOutOfBoundsException; // packageimport
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17 import org.eclipse.jface.internal.text.revisions.Colors; // packageimport
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18 import org.eclipse.jface.internal.text.revisions.ChangeRegion; // packageimport
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19 import org.eclipse.jface.internal.text.revisions.Range; // packageimport
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20 import org.eclipse.jface.internal.text.revisions.RevisionPainter; // packageimport
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21 import org.eclipse.jface.internal.text.revisions.RevisionSelectionProvider; // packageimport
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22
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23 import java.lang.all;
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24 import tango.text.convert.Format;
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25
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26 import org.eclipse.core.runtime.Assert;
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27
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28 /**
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29 * A hunk describes a contiguous range of changed, added or deleted lines. <code>Hunk</code>s are separated by
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30 * one or more unchanged lines.
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31 *
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32 * @since 3.3
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33 */
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34 public final class Hunk {
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35 /**
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36 * The line at which the hunk starts in the current document. Must be in
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37 * <code>[0, numberOfLines]</code> &ndash; note the inclusive end; there may be a hunk with
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38 * <code>line is numberOfLines</code> to describe deleted lines at then end of the document.
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39 */
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40 public const int line;
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41 /**
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42 * The difference in lines compared to the corresponding line range in the original. Positive
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43 * for added lines, negative for deleted lines.
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44 */
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45 public const int delta;
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46 /** The number of changed lines in this hunk, must be &gt;= 0. */
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47 public const int changed;
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48
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49 /**
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50 * Creates a new hunk.
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51 *
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52 * @param line the line at which the hunk starts, must be &gt;= 0
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53 * @param delta the difference in lines compared to the original
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54 * @param changed the number of changed lines in this hunk, must be &gt;= 0
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55 */
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56 public this(int line, int delta, int changed) {
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57 Assert.isLegal(line >= 0);
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58 Assert.isLegal(changed >= 0);
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59 this.line= line;
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60 this.delta= delta;
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61 this.changed= changed;
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62 }
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63
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64 /*
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65 * @see java.lang.Object#toString()
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66 */
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67 public override String toString() {
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68 return Format("Hunk [{}>{}{}{}]", line, changed, delta < 0 ? "-" : "+", Math.abs(delta) ); //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$ //$NON-NLS-4$ //$NON-NLS-5$
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69 }
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70
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71 /*
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72 * @see java.lang.Object#hashCode()
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73 */
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74 public override hash_t toHash() {
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75 final int prime= 31;
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76 int result= 1;
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77 result= prime * result + changed;
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78 result= prime * result + delta;
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79 result= prime * result + line;
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80 return result;
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81 }
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82
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83 /*
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84 * @see java.lang.Object#equals(java.lang.Object)
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85 */
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86 public override int opEquals(Object obj) {
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87 if (obj is this)
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88 return true;
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89 if ( Hunk other= cast(Hunk)obj ) {
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90 return other.line is this.line && other.delta is this.delta && other.changed is this.changed;
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91 }
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92 return false;
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93 }
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94 }