01: /*
02: * LineSequence.java
03: *
04: * Copyright (C) 1998-2002 Peter Graves
05: * $Id: LineSequence.java,v 1.1.1.1 2002/09/24 16:07:43 piso Exp $
06: *
07: * This program is free software; you can redistribute it and/or
08: * modify it under the terms of the GNU General Public License
09: * as published by the Free Software Foundation; either version 2
10: * of the License, or (at your option) any later version.
11: *
12: * This program is distributed in the hope that it will be useful,
13: * but WITHOUT ANY WARRANTY; without even the implied warranty of
14: * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15: * GNU General Public License for more details.
16: *
17: * You should have received a copy of the GNU General Public License
18: * along with this program; if not, write to the Free Software
19: * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
20: */
21:
22: package org.armedbear.j;
23:
24: public final class LineSequence {
25: private Line first;
26: private Line last;
27: private int size;
28:
29: public LineSequence() {
30: }
31:
32: public LineSequence(Line line) {
33: first = last = line.copy();
34: size = 1;
35: }
36:
37: // Copies lines.
38: public LineSequence(Line first, Line last) {
39: Line line = first;
40: while (line != null) {
41: appendLine(line.copy());
42: if (line == last)
43: break;
44: line = line.next();
45: }
46: }
47:
48: public final Line getFirstLine() {
49: return first;
50: }
51:
52: public final Line getLastLine() {
53: return last;
54: }
55:
56: public final int size() {
57: return size;
58: }
59:
60: // Does not copy line.
61: public void appendLine(Line line) {
62: line.setPrevious(last);
63: if (last != null)
64: last.setNext(line);
65: last = line;
66: if (first == null)
67: first = line;
68: ++size;
69: }
70:
71: public String toString() {
72: FastStringBuffer sb = new FastStringBuffer();
73: for (Line line = first; line != null; line = line.next()) {
74: sb.append(line.getText());
75: sb.append('\n');
76: if (line == last)
77: break;
78: }
79: return sb.toString();
80: }
81: }
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