01: /*
02: (c) Copyright 2004, 2005, 2006, 2007, 2008 Hewlett-Packard Development Company, LP, all rights reserved.
03: [See end of file]
04: $Id: Paren.java,v 1.6 2008/01/02 12:06:04 andy_seaborne Exp $
05: */
06:
07: package com.hp.hpl.jena.graph.query.regexptrees;
08:
09: /**
10: Class which represents parenthesised regular expressions. Any parenthesised
11: expression may have a non-zero label, meaning that it may be referred back
12: to by BakReference expressions.
13:
14: @author hedgehog
15: */
16: public class Paren extends RegexpTree {
17: protected RegexpTree operand;
18: protected int index;
19:
20: public Paren(RegexpTree tree) {
21: this (tree, 0);
22: }
23:
24: public Paren(RegexpTree tree, int index) {
25: this .operand = tree;
26: this .index = index;
27: }
28:
29: public RegexpTree getOperand() {
30: return operand;
31: }
32:
33: public int getIndex() {
34: return index;
35: };
36:
37: public boolean equals(Object other) {
38: return other instanceof Paren
39: && operand.equals(((Paren) other).operand);
40: }
41:
42: public int hashCode() {
43: return operand.hashCode();
44: }
45:
46: public String toString() {
47: return "(" + operand + ")";
48: }
49: }
50:
51: /*
52: (c) Copyright 2004, 2005, 2006, 2007, 2008 Hewlett-Packard Development Company, LP
53: All rights reserved.
54:
55: Redistribution and use in source and binary forms, with or without
56: modification, are permitted provided that the following conditions
57: are met:
58:
59: 1. Redistributions of source code must retain the above copyright
60: notice, this list of conditions and the following disclaimer.
61:
62: 2. Redistributions in binary form must reproduce the above copyright
63: notice, this list of conditions and the following disclaimer in the
64: documentation and/or other materials provided with the distribution.
65:
66: 3. The name of the author may not be used to endorse or promote products
67: derived from this software without specific prior written permission.
68:
69: THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
70: IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
71: OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
72: IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
73: INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
74: NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
75: DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
76: THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
77: (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
78: THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
79: */
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