| /* |
| * Copyright (c) 1999, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. Oracle designates this |
| * particular file as subject to the "Classpath" exception as provided |
| * by Oracle in the LICENSE file that accompanied this code. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| /* |
| * COMPONENT_NAME: idl.parser |
| * |
| * ORIGINS: 27 |
| * |
| * Licensed Materials - Property of IBM |
| * 5639-D57 (C) COPYRIGHT International Business Machines Corp. 1997, 1999 |
| * RMI-IIOP v1.0 |
| * |
| */ |
| |
| package com.sun.tools.corba.se.idl.constExpr; |
| |
| // NOTES: |
| |
| import com.sun.tools.corba.se.idl.Util; |
| import java.math.BigInteger; |
| |
| public class ShiftRight extends BinaryExpr |
| { |
| protected ShiftRight (Expression leftOperand, Expression rightOperand) |
| { |
| super (">>", leftOperand, rightOperand); |
| } // ctor |
| |
| public Object evaluate () throws EvaluationException |
| { |
| try |
| { |
| Number l = (Number)left ().evaluate (); |
| Number r = (Number)right ().evaluate (); |
| |
| if (l instanceof Float || l instanceof Double || r instanceof Float || r instanceof Double) |
| { |
| String[] parameters = {Util.getMessage ("EvaluationException.right"), left ().value ().getClass ().getName (), right ().value ().getClass ().getName ()}; |
| throw new EvaluationException (Util.getMessage ("EvaluationException.1", parameters)); |
| } |
| else |
| { |
| // Shift right (>>) |
| //daz value (new Long (l.longValue () >> r.longValue ())); |
| BigInteger bL = (BigInteger)coerceToTarget ((BigInteger)l); |
| BigInteger bR = (BigInteger)r; |
| |
| // Change signed to unsigned (Clear sign bit--can be done when setting bL!) |
| if (bL.signum () == -1) |
| if (type ().equals ("short")) |
| bL = bL.add (twoPow16); |
| else if (type ().equals ("long")) |
| bL = bL.add (twoPow32); |
| else if (type ().equals ("long long")) |
| bL = bL.add (twoPow64); |
| |
| value (bL.shiftRight (bR.intValue ())); |
| } |
| } |
| catch (ClassCastException e) |
| { |
| String[] parameters = {Util.getMessage ("EvaluationException.right"), left ().value ().getClass ().getName (), right ().value ().getClass ().getName ()}; |
| throw new EvaluationException (Util.getMessage ("EvaluationException.1", parameters)); |
| } |
| return value (); |
| } // evaluate |
| } // class ShiftRight |