Equal.java revision 608:7e06bf1dcb09 
1/*
2 * Copyright (c) 1999, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.  Oracle designates this
8 * particular file as subject to the "Classpath" exception as provided
9 * by Oracle in the LICENSE file that accompanied this code.
10 *
11 * This code is distributed in the hope that it will be useful, but WITHOUT
12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
14 * version 2 for more details (a copy is included in the LICENSE file that
15 * accompanied this code).
16 *
17 * You should have received a copy of the GNU General Public License version
18 * 2 along with this work; if not, write to the Free Software Foundation,
19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20 *
21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22 * or visit www.oracle.com if you need additional information or have any
23 * questions.
24 */
25/*
26 * COMPONENT_NAME: idl.parser
27 *
28 * ORIGINS: 27
29 *
30 * Licensed Materials - Property of IBM
31 * 5639-D57 (C) COPYRIGHT International Business Machines Corp. 1997, 1999
32 * RMI-IIOP v1.0
33 *
34 */
35
36package com.sun.tools.corba.se.idl.constExpr;
37
38// NOTES:
39
40import com.sun.tools.corba.se.idl.Util;
41import java.math.BigInteger;
42
43public class Equal extends BinaryExpr
44{
45  protected Equal (Expression leftOperand, Expression rightOperand)
46  {
47    super ("==", leftOperand, rightOperand);
48  } // ctor
49
50  public Object evaluate () throws EvaluationException
51  {
52    try
53    {
54      Object left = left ().evaluate ();
55      if (left instanceof Boolean)
56      {
57        Boolean l = (Boolean)left;
58        Boolean r = (Boolean)right ().evaluate ();
59        value (new Boolean (l.booleanValue () == r.booleanValue()));
60      }
61      else
62      {
63        Number l = (Number)left;
64        Number r = (Number)right ().evaluate ();
65        if (l instanceof Float || l instanceof Double || r instanceof Float || r instanceof Double)
66          value (new Boolean (l.doubleValue () == r.doubleValue ()));
67        else
68          //daz          value (new Boolean (l.longValue () == r.longValue ()));
69          value (new Boolean (((BigInteger)l).equals ((BigInteger)r)));
70      }
71    }
72    catch (ClassCastException e)
73    {
74      String[] parameters = {Util.getMessage ("EvaluationException.equal"), left ().value ().getClass ().getName (), right ().value ().getClass ().getName ()};
75      throw new EvaluationException (Util.getMessage ("EvaluationException.1", parameters));
76    }
77    return value ();
78  } // evaluate
79} // class Equal
80