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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  
36  package com.sun.tools.corba.se.idl.constExpr;
37  
38  // NOTES:
39  
40  import com.sun.tools.corba.se.idl.Util;
41  import java.math.BigInteger;
42  
43  public class Not extends UnaryExpr
44  {
45    protected Not (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        {
58          String[] parameters = {Util.getMessage ("EvaluationException.not"), operand ().value ().getClass ().getName ()};
59          throw new EvaluationException (Util.getMessage ("EvaluationException.2", parameters));
60        }
61        else
62        {
63          // Complement (~)
64          //daz        value (new Long (~op.longValue ()));
65          BigInteger b = (BigInteger)coerceToTarget((BigInteger)op);
66  
67          // Compute according to CORBA 2.1 specifications for specified type.
68          if (type ().equals ("short") || type ().equals ("long") || type ().equals ("long long"))
69            value (b.add (one).multiply (negOne));
70          else if (type ().equals("unsigned short"))
71            // "short" not CORBA compliant, but necessary for logical operations--size matters!
72            value (twoPow16.subtract (one).subtract (b));
73          else if (type ().equals ("unsigned long"))
74            value (twoPow32.subtract (one).subtract (b));
75          else if (type ().equals ("unsigned long long"))
76            value (twoPow64.subtract (one).subtract (b));
77          else
78            value (b.not ());  // Should never execute...
79        }
80      }
81      catch (ClassCastException e)
82      {
83        String[] parameters = {Util.getMessage ("EvaluationException.not"), operand ().value ().getClass ().getName ()};
84        throw new EvaluationException (Util.getMessage ("EvaluationException.2", parameters));
85      }
86      return value ();
87    } // evaluate
88  } // class Not