CommentTagInserter.cs


0:	// CommentTagInserter.cs
1:	// Copyright (c) 2000 Mike Krueger
2:	//
3:	// This program is free software; you can redistribute it and/or modify
4:	// it under the terms of the GNU General Public License as published by
5:	// the Free Software Foundation; either version 2 of the License, or
6:	// (at your option) any later version.
7:	//
8:	// This program is distributed in the hope that it will be useful,
9:	// but WITHOUT ANY WARRANTY; without even the implied warranty of
10:	// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
11:	// GNU General Public License for more details.
12:	//
13:	// You should have received a copy of the GNU General Public License
14:	// along with this program; if not, write to the Free Software
15:	// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
16:
17:	using System;
18:	using System.Drawing;
19:
20:	using SharpDevelop.Tool.Data;
21:
22:	namespace SharpDevelop.Internal.Text {
23:
24:	/// <summary>
25:	/// This class inserts the auto comments in the textbuffer after return
26:	/// </summary>
27:	public class CommentTagInserter
28:	{
29:	public static int InsertCommentTag(TextBuffer buffer, int line, int xpos)
30:	{
31:	if (line <= 0)
32:	return buffer[line].Text.Length;
33:
34:	if (buffer[line - 1].Span) {
35:	if (buffer[line - 1].BlockSpanOn) { // case for /* style comments
36:	Point p;
37:
38:	int pos = buffer[line].Text.Length - 1;
39:	int length = pos;
40:	// insert spaces, if the /* is not in the first column
41:	// the * must be under the * from /*
42:	int len = buffer[line - 1].Text.Length;
43:	for (int i = 0; i < len; ++i) {
44:	if (i + 1 < len &&
45:	buffer[line - 1].Text[i] == '/' &&
46:	buffer[line - 1].Text[i + 1] == '*') {
47:	length = i;
48:	break;
49:	}
50:	}
51:
52:	while (pos < length) {
53:	buffer.Insert(new Point(buffer[line].Text.Length, line), " ");
54:	++pos;
55:	}
56:
57:	// don't insert '', if the line above doesn't contain a '' at the beginning
58:	if (pos + 1 < buffer[line - 1].Text.Length && buffer[line - 1].Text[pos + 1] == '*') {
59:	p = buffer.Insert(new Point(buffer[line].Text.Length, line), "* ");
60:	return p.X;
61:	} else {
62:	p = buffer.Insert(new Point(buffer[line].Text.Length, line), "");
63:	return p.X;
64:	}
65:	} else {
66:	bool foundnext = false;
67:	// search /// marks in the next line (if any, a /// will be inserted later)
68:	if (line + 1 < buffer.Length)
69:	for (int i = 0; i < buffer[line + 1].Text.Length; ++i) {
70:	if (i + 2 < buffer[line - 1].Text.Length &&
71:	buffer[line + 1].Text[i] == '/' &&
72:	buffer[line + 1].Text[i + 1] == '/' &&
73:	buffer[line + 1].Text[i + 2] == '/') {
74:	foundnext = true;
75:	break;
76:	}
77:	}
78:
79:	bool foundmark = false;
80:	int len = buffer[line - 1].Text.Length;
81:	for (int i = 0; i < len; ++i) {
82:	if (i + 2 < len && // search if the actual line conains an /// tag
83:	buffer[line - 1].Text[i] == '/' &&
84:	buffer[line - 1].Text[i + 1] == '/' &&
85:	buffer[line - 1].Text[i + 2] == '/') {
86:	foundmark = true;
87:	}
88:	if (!foundmark && (!Char.IsWhiteSpace(buffer[line - 1].Text[i]))) {
89:	break;
90:	}
91:	// if the actual line contains a /// tag and some text after, or the next line contains
92:	// a /// tag, a /// tag will be inserted in the newly created line.
93:	if (foundmark && (!Char.IsWhiteSpace(buffer[line - 1].Text[i]) && buffer[line - 1].Text[i] != '/') \|\| foundnext) {
94:	Point p = buffer.Insert(new Point(buffer[line].Text.Length, line), "/// ");
95:	return p.X;
96:	}
97:	}
98:	}
99:	}
100:	return xpos;
101:	}
102:	}
103:	}