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Java > Open Source Codes > gnu > regexp > RETokenAny


1 /*
2  * gnu/regexp/RETokenAny.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  */
19
20 package gnu.regexp;
21
22 final class RETokenAny extends REToken {
23   /** True if '.' can match a newline (RE_DOT_NEWLINE) */
24   private boolean newline;
25
26   /** True if '.' can't match a null (RE_DOT_NOT_NULL) */
27   private boolean matchNull;
28   
29   RETokenAny(int subIndex, boolean newline, boolean matchNull) {
30     super(subIndex);
31     this.newline = newline;
32     this.matchNull = matchNull;
33   }
34
35   int getMinimumLength() {
36     return 1;
37   }
38
39     boolean match(CharIndexed input, REMatch mymatch) {
40     char ch = input.charAt(mymatch.index);
41     if ((ch == CharIndexed.OUT_OF_BOUNDS)
42     || (!newline && (ch == '\n'))
43     || (matchNull && (ch == 0))) {
44     return false;
45     }
46     ++mymatch.index;
47     return next(input, mymatch);
48   }
49
50   void dump(StringBuffer JavaDoc os) {
51     os.append('.');
52   }
53 }
54
55
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