01: /*
02: * Copyright 2001-2005 Sun Microsystems, Inc. All Rights Reserved.
03: * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
04: *
05: * This code is free software; you can redistribute it and/or modify it
06: * under the terms of the GNU General Public License version 2 only, as
07: * published by the Free Software Foundation. Sun designates this
08: * particular file as subject to the "Classpath" exception as provided
09: * by Sun in the LICENSE file that accompanied this code.
10: *
11: * This code is distributed in the hope that it will be useful, but WITHOUT
12: * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13: * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
14: * version 2 for more details (a copy is included in the LICENSE file that
15: * accompanied this code).
16: *
17: * You should have received a copy of the GNU General Public License version
18: * 2 along with this work; if not, write to the Free Software Foundation,
19: * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20: *
21: * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
22: * CA 95054 USA or visit www.sun.com if you need additional information or
23: * have any questions.
24: */
25:
26: package com.sun.tools.javadoc;
27:
28: import com.sun.javadoc.SourcePosition;
29: import com.sun.tools.javac.util.Position;
30:
31: import java.io.File;
32:
33: /**
34: * A source position: filename, line number, and column number.
35: *
36: * @since J2SE1.4
37: * @author Neal M Gafter
38: * @author Michael Van De Vanter (position representation changed to char offsets)
39: */
40: class SourcePositionImpl implements SourcePosition {
41: String filename;
42: int position;
43: Position.LineMap lineMap;
44:
45: /** The source file. Returns null if no file information is
46: * available. */
47: public File file() {
48: return (filename == null) ? null : new File(filename);
49: }
50:
51: /** The line in the source file. The first line is numbered 1;
52: * 0 means no line number information is available. */
53: public int line() {
54: if (lineMap == null) {
55: return 0;
56: } else {
57: return lineMap.getLineNumber(position);
58: }
59: }
60:
61: /** The column in the source file. The first column is
62: * numbered 1; 0 means no column information is available.
63: * Columns count characters in the input stream; a tab
64: * advances the column number to the next 8-column tab stop.
65: */
66: public int column() {
67: if (lineMap == null) {
68: return 0;
69: } else {
70: return lineMap.getColumnNumber(position);
71: }
72: }
73:
74: private SourcePositionImpl(String file, int position,
75: Position.LineMap lineMap) {
76: super ();
77: this .filename = file;
78: this .position = position;
79: this .lineMap = lineMap;
80: }
81:
82: public static SourcePosition make(String file, int pos,
83: Position.LineMap lineMap) {
84: if (file == null)
85: return null;
86: return new SourcePositionImpl(file, pos, lineMap);
87: }
88:
89: public String toString() {
90: if (position == Position.NOPOS)
91: return filename;
92: else
93: return filename + ":" + line();
94: }
95: }
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