1 /*
2 * $Header$
3 * $Revision$
4 * $Date$
5 *
6 * ====================================================================
7 *
8 * Copyright 2000-2002 bob mcwhirter & James Strachan.
9 * All rights reserved.
10 *
11 * Redistribution and use in source and binary forms, with or without
12 * modification, are permitted provided that the following conditions are
13 * met:
14 *
15 * * Redistributions of source code must retain the above copyright
16 * notice, this list of conditions and the following disclaimer.
17 *
18 * * Redistributions in binary form must reproduce the above copyright
19 * notice, this list of conditions and the following disclaimer in the
20 * documentation and/or other materials provided with the distribution.
21 *
22 * * Neither the name of the Jaxen Project nor the names of its
23 * contributors may be used to endorse or promote products derived
24 * from this software without specific prior written permission.
25 *
26 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
27 * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
28 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
29 * PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
30 * OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
31 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
32 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
33 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
34 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
35 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
36 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
37 *
38 * ====================================================================
39 * This software consists of voluntary contributions made by many
40 * individuals on behalf of the Jaxen Project and was originally
41 * created by bob mcwhirter <bob@werken.com> and
42 * James Strachan <jstrachan@apache.org>. For more information on the
43 * Jaxen Project, please see <http://www.jaxen.org/>.
44 *
45 * $Id$
46 */
47
48
49
50 package org.jaxen.expr;
51
52 abstract class DefaultBinaryExpr extends DefaultExpr implements BinaryExpr
53 {
54 private Expr lhs;
55 private Expr rhs;
56
57 DefaultBinaryExpr(Expr lhs, Expr rhs)
58 {
59 this.lhs = lhs;
60 this.rhs = rhs;
61 }
62
63 public Expr getLHS()
64 {
65 return this.lhs;
66 }
67
68 public Expr getRHS()
69 {
70 return this.rhs;
71 }
72
73 public void setLHS(Expr lhs)
74 {
75 this.lhs = lhs;
76 }
77
78 public void setRHS(Expr rhs)
79 {
80 this.rhs = rhs;
81 }
82
83 public abstract String getOperator();
84
85 public String getText()
86 {
87 return "(" + getLHS().getText() + " " + getOperator() + " " + getRHS().getText() +")";
88 }
89
90 public String toString()
91 {
92 return "[" + getClass().getName() + ": " + getLHS() + ", " + getRHS() + "]";
93 }
94
95 public Expr simplify()
96 {
97 setLHS( getLHS().simplify() );
98 setRHS( getRHS().simplify() );
99
100 return this;
101 }
102 }