Negative.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 Negative extends UnaryExpr
44{
45  protected Negative (Expression operand)
46  {
47    super ("-", operand);
48  } // ctor
49
50  public Object evaluate () throws EvaluationException
51  {
52    try
53    {
54      Number op = (Number)operand ().evaluate ();
55
56      if (op instanceof Float || op instanceof Double)
57        value (new Double (-op.doubleValue ()));
58      else
59      {
60        // Multiply by -1
61        //daz        value (new Long (-op.longValue ()));
62        BigInteger tmpOp = (BigInteger)op;
63        value (tmpOp.multiply (BigInteger.valueOf (-1)));
64     }
65    }
66    catch (ClassCastException e)
67    {
68      String[] parameters = {Util.getMessage ("EvaluationException.neg"), operand ().value ().getClass ().getName ()};
69      throw new EvaluationException (Util.getMessage ("EvaluationException.2", parameters));
70    }
71    return value ();
72  } // evaluate
73} // class Negative
74