01 /* This file is part of the project "Hilbert II" - http://www.qedeq.org
02 *
03 * Copyright 2000-2013, Michael Meyling <mime@qedeq.org>.
04 *
05 * "Hilbert II" is free software; you can redistribute
06 * it and/or modify it under the terms of the GNU General Public
07 * License as published by the Free Software Foundation; either
08 * version 2 of the License, or (at your option) any later version.
09 *
10 * This program 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
13 * GNU General Public License for more details.
14 */
15
16 package org.qedeq.base.io;
17
18 import java.io.Serializable;
19
20 /**
21 * Describes a file position within a text file.
22 *
23 * @author Michael Meyling
24 */
25 public final class SourcePosition implements Serializable {
26
27 /** Begin of file. */
28 public static final SourcePosition BEGIN = new SourcePosition(1, 1);
29
30 /** Line number, starting with 1. */
31 private int row;
32
33 /** Column number, starting with 1. */
34 private int column;
35
36 /**
37 * Constructs source position object.
38 *
39 * @param row Line number, starting with 1.
40 * @param column Column number, starting with 1.
41 */
42 public SourcePosition(final int row, final int column) {
43 this.row = row;
44 this.column = column;
45 }
46
47 /**
48 * Get line number, starting with 1.
49 *
50 * @return Line number.
51 */
52 public final int getRow() {
53 return row;
54 }
55
56 /**
57 * Get column number, starting with 1.
58 *
59 * @return column number
60 */
61 public final int getColumn() {
62 return column;
63 }
64
65 public final int hashCode() {
66 return getRow() ^ (getColumn() * 13);
67 }
68
69 public final boolean equals(final Object obj) {
70 if (!(obj instanceof SourcePosition)) {
71 return false;
72 }
73 final SourcePosition other = (SourcePosition) obj;
74 return (getRow() == other.getRow())
75 && (getColumn() == other.getColumn());
76 }
77
78 public final String toString() {
79 return getRow() + ":" + getColumn();
80 }
81
82 }
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