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comparison dwtx/jface/internal/text/revisions/Hunk.d @ 129:eb30df5ca28b

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Added JFace Text sources
author Frank Benoit <benoit@tionex.de>
date Sat, 23 Aug 2008 19:10:48 +0200
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children c4fb132a086c
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128:8df1d4193877 129:eb30df5ca28b
1 /*******************************************************************************
2 * Copyright (c) 2006 IBM Corporation and others.
3 * All rights reserved. This program and the accompanying materials
4 * are made available under the terms of the Eclipse Public License v1.0
5 * which accompanies this distribution, and is available at
6 * http://www.eclipse.org/legal/epl-v10.html
7 *
8 * Contributors:
9 * IBM Corporation - initial API and implementation
10 * Port to the D programming language:
11 * Frank Benoit <benoit@tionex.de>
12 *******************************************************************************/
13 module dwtx.jface.internal.text.revisions.Hunk;
14
15 import dwt.dwthelper.utils;
16
17 import dwtx.core.runtime.Assert;
18
19 /**
20 * A hunk describes a contiguous range of changed, added or deleted lines. <code>Hunk</code>s are separated by
21 * one or more unchanged lines.
22 *
23 * @since 3.3
24 */
25 public final class Hunk {
26 /**
27 * The line at which the hunk starts in the current document. Must be in
28 * <code>[0, numberOfLines]</code> &ndash; note the inclusive end; there may be a hunk with
29 * <code>line is numberOfLines</code> to describe deleted lines at then end of the document.
30 */
31 public final int line;
32 /**
33 * The difference in lines compared to the corresponding line range in the original. Positive
34 * for added lines, negative for deleted lines.
35 */
36 public final int delta;
37 /** The number of changed lines in this hunk, must be &gt;= 0. */
38 public final int changed;
39
40 /**
41 * Creates a new hunk.
42 *
43 * @param line the line at which the hunk starts, must be &gt;= 0
44 * @param delta the difference in lines compared to the original
45 * @param changed the number of changed lines in this hunk, must be &gt;= 0
46 */
47 public Hunk(int line, int delta, int changed) {
48 Assert.isLegal(line >= 0);
49 Assert.isLegal(changed >= 0);
50 this.line= line;
51 this.delta= delta;
52 this.changed= changed;
53 }
54
55 /*
56 * @see java.lang.Object#toString()
57 */
58 public String toString() {
59 return "Hunk [" + line + ">" + changed + (delta < 0 ? "-" : "+") + Math.abs(delta) + "]"; //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$ //$NON-NLS-4$ //$NON-NLS-5$
60 }
61
62 /*
63 * @see java.lang.Object#hashCode()
64 */
65 public int hashCode() {
66 final int prime= 31;
67 int result= 1;
68 result= prime * result + changed;
69 result= prime * result + delta;
70 result= prime * result + line;
71 return result;
72 }
73
74 /*
75 * @see java.lang.Object#equals(java.lang.Object)
76 */
77 public bool equals(Object obj) {
78 if (obj is this)
79 return true;
80 if (obj instanceof Hunk) {
81 Hunk other= (Hunk) obj;
82 return other.line is this.line && other.delta is this.delta && other.changed is this.changed;
83 }
84 return false;
85 }
86 }