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/jEdit/tags/jedit-4-0-pre5/gnu/regexp/RETokenEnd.java

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Java | 55 lines | 29 code | 5 blank | 21 comment | 7 complexity | 0d02cd0172eb6ebbfc2ca894647b2cdc MD5 | raw file
 1/*
 2 *  gnu/regexp/RETokenEnd.java
 3 *  Copyright (C) 1998-2001 Wes Biggs
 4 *
 5 *  This library is free software; you can redistribute it and/or modify
 6 *  it under the terms of the GNU Lesser General Public License as published
 7 *  by the Free Software Foundation; either version 2.1 of the License, or
 8 *  (at your option) any later version.
 9 *
10 *  This library 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 Lesser General Public License for more details.
14 *
15 *  You should have received a copy of the GNU Lesser General Public License
16 *  along with this program; if not, write to the Free Software
17 *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
18 */
19package gnu.regexp;
20
21final class RETokenEnd extends REToken {
22    /**
23     * Indicates whether this token should match on a line break.
24     */
25  private String newline;
26
27  RETokenEnd(int subIndex,String newline) { 
28    super(subIndex);
29    this.newline = newline;
30  }
31
32    boolean match(CharIndexed input, REMatch mymatch) {
33	char ch = input.charAt(mymatch.index);
34	if (ch == CharIndexed.OUT_OF_BOUNDS)
35	    return ((mymatch.eflags & RE.REG_NOTEOL)>0) ? 
36		false : next(input, mymatch);
37	if (newline != null) {
38	    char z;
39	    int i = 0; // position in newline
40	    do {
41		z = newline.charAt(i);
42		if (ch != z) return false;
43		++i;
44		ch = input.charAt(mymatch.index + i);
45	    } while (i < newline.length());
46	    
47	    return next(input, mymatch);
48	}
49	return false;
50    }
51
52  void dump(StringBuffer os) {
53    os.append('$');
54  }
55}