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 ShiftLeft extends BinaryExpr 44{ 45 protected ShiftLeft (Expression leftOperand, Expression rightOperand) 46 { 47 super ("<<", leftOperand, rightOperand); 48 } // ctor 49 50 public Object evaluate () throws EvaluationException 51 { 52 try 53 { 54 Number l = (Number)left ().evaluate (); 55 Number r = (Number)right ().evaluate (); 56 57 if (l instanceof Float || l instanceof Double || r instanceof Float || r instanceof Double) 58 { 59 String[] parameters = {Util.getMessage ("EvaluationException.left"), left ().value ().getClass ().getName (), right ().value ().getClass ().getName ()}; 60 throw new EvaluationException (Util.getMessage ("EvaluationException.1", parameters)); 61 } 62 else 63 { 64 // Shift left (<<) 65 //daz value (new Long (l.longValue () << r.longValue ())); 66 BigInteger bL = (BigInteger)coerceToTarget (l); 67 BigInteger bR = (BigInteger)r; 68 69 BigInteger ls = bL.shiftLeft (bR.intValue ()); 70 71 if (type ().indexOf ("short") >= 0) 72 ls = ls.mod (twoPow16); 73 else if (type ().indexOf ("long") >= 0) 74 ls = ls.mod (twoPow32); 75 else if (type ().indexOf ("long long") >= 0) 76 ls = ls.mod (twoPow64); 77 78 value (coerceToTarget (ls)); 79 } 80 } 81 catch (ClassCastException e) 82 { 83 String[] parameters = {Util.getMessage ("EvaluationException.left"), left ().value ().getClass ().getName (), right ().value ().getClass ().getName ()}; 84 throw new EvaluationException (Util.getMessage ("EvaluationException.1", parameters)); 85 } 86 return value (); 87 } // evaluate 88} // class ShiftLeft 89