1 /*
2 * $Header$
3 * $Revision$
4 * $Date$
5 *
6 * ====================================================================
7 *
8 * Copyright 2000-2002 bob mcwhirter & James Strachan.
9 * All rights reserved.
10 *
11 *
12 * Redistribution and use in source and binary forms, with or without
13 * modification, are permitted provided that the following conditions are
14 * met:
15 *
16 * * Redistributions of source code must retain the above copyright
17 * notice, this list of conditions and the following disclaimer.
18 *
19 * * Redistributions in binary form must reproduce the above copyright
20 * notice, this list of conditions and the following disclaimer in the
21 * documentation and/or other materials provided with the distribution.
22 *
23 * * Neither the name of the Jaxen Project nor the names of its
24 * contributors may be used to endorse or promote products derived
25 * from this software without specific prior written permission.
26 *
27 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
28 * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
29 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
30 * PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
31 * OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
32 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
33 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
34 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
35 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
36 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
37 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
38 *
39 * ====================================================================
40 * This software consists of voluntary contributions made by many
41 * individuals on behalf of the Jaxen Project and was originally
42 * created by bob mcwhirter <bob@werken.com> and
43 * James Strachan <jstrachan@apache.org>. For more information on the
44 * Jaxen Project, please see <http://www.jaxen.org/>.
45 *
46 * $Id$
47 */
48 package org.jaxen.expr;
49
50 /**
51 * Represents an XPath floating point literal. This is production 30 in the
52 * <a href="https://www.w3.org/TR/xpath#NT-Number">XPath 1.0 specification</a>:
53 *
54 * <pre>[30] Number ::= Digits ('.' Digits?)?
55 * | '.' Digits</pre>
56 *
57 */
58 public interface NumberExpr extends Expr
59 {
60
61
62 /**
63 * Returns a <code>java.lang.Double</code> representing the number.
64 *
65 * @return a <code>java.lang.Double</code> representing the number
66 */
67 public Number getNumber();
68 }