BooleanNot.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 BooleanNot extends UnaryExpr
44{
45  protected BooleanNot (Expression operand)
46  {
47    super ("!", operand);
48  } // ctor
49
50  public Object evaluate () throws EvaluationException
51  {
52    try
53    {
54      Object tmp = operand ().evaluate ();
55      Boolean op;
56      //daz      if (tmp instanceof Number)
57      //           op = new Boolean (((Number)tmp).longValue () != 0);
58      //         else
59      //           op = (Boolean)tmp;
60      if (tmp instanceof Number)
61      {
62        if (tmp instanceof BigInteger)
63          op = new Boolean (((BigInteger)tmp).compareTo (zero) != 0);
64        else
65          op = new Boolean (((Number)tmp).longValue () != 0);
66      }
67      else
68        op = (Boolean)tmp;
69
70      value (new Boolean (!op.booleanValue ()));
71    }
72    catch (ClassCastException e)
73    {
74      String[] parameters = {Util.getMessage ("EvaluationException.booleanNot"), operand ().value ().getClass ().getName ()};
75      throw new EvaluationException (Util.getMessage ("EvaluationException.2", parameters));
76    }
77    return value ();
78  } // evaluate
79} // class BooleanNot
80