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Java > Open Source Codes > org > eclipse > jdt > internal > debug > eval > ast > instructions > TwiddleOperator


1 /*******************************************************************************
2  * Copyright (c) 2000, 2005 IBM Corporation and others.
3  * All rights reserved. This program and the accompanying materials
4  * are made available under the terms of the Eclipse Public License v1.0
5  * which accompanies this distribution, and is available at
6  * http://www.eclipse.org/legal/epl-v10.html
7  *
8  * Contributors:
9  * IBM Corporation - initial API and implementation
10  *******************************************************************************/
11 package org.eclipse.jdt.internal.debug.eval.ast.instructions;
12
13 import org.eclipse.core.runtime.CoreException;
14 import org.eclipse.jdt.debug.core.IJavaPrimitiveValue;
15
16 public class TwiddleOperator extends UnaryOperator {
17
18     public TwiddleOperator(int expressionTypeId, int start) {
19         super(expressionTypeId, start);
20     }
21
22     /*
23      * @see Instruction#execute()
24      */
25     public void execute() throws CoreException {
26         IJavaPrimitiveValue value= (IJavaPrimitiveValue)popValue();
27         switch (fExpressionTypeId) {
28             case T_long:
29                 pushNewValue(~value.getLongValue());
30                 break;
31             case T_byte:
32             case T_short:
33             case T_int:
34             case T_char:
35                 pushNewValue(~value.getIntValue());
36                 break;
37         }
38     }
39
40     public String JavaDoc toString() {
41         return InstructionsEvaluationMessages.TwiddleOperator______operator_1;
42     }
43
44 }
45
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