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1 /*
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2 * Copyright 2002-2003 Sun Microsystems, Inc. All Rights Reserved.
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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4 *
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5 * This code is free software; you can redistribute it and/or modify it
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6 * under the terms of the GNU General Public License version 2 only, as
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7 * published by the Free Software Foundation.
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8 *
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9 * This code is distributed in the hope that it will be useful, but WITHOUT
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10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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12 * version 2 for more details (a copy is included in the LICENSE file that
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13 * accompanied this code).
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14 *
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15 * You should have received a copy of the GNU General Public License version
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16 * 2 along with this work; if not, write to the Free Software Foundation,
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17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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18 *
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19 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
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20 * CA 95054 USA or visit www.sun.com if you need additional information or
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21 * have any questions.
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22 *
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23 */
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24
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25 package sun.jvm.hotspot.jdi;
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26
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27 import com.sun.jdi.*;
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28
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29 public abstract class PrimitiveValueImpl extends ValueImpl
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30 implements PrimitiveValue {
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31
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32 PrimitiveValueImpl(VirtualMachine aVm) {
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33 super(aVm);
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34 }
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35
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36 abstract public boolean booleanValue();
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37 abstract public byte byteValue();
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38 abstract public char charValue();
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39 abstract public short shortValue();
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40 abstract public int intValue();
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41 abstract public long longValue();
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42 abstract public float floatValue();
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43 abstract public double doubleValue();
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44
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45 /*
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46 * The checked versions of the value accessors throw
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47 * InvalidTypeException if the required conversion is
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48 * narrowing and would result in the loss of information
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49 * (either magnitude or precision).
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50 *
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51 * Default implementations here do no checking; subclasses
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52 * override as necessary to do the proper checking.
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53 */
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54 byte checkedByteValue() throws InvalidTypeException {
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55 return byteValue();
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56 }
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57 char checkedCharValue() throws InvalidTypeException {
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58 return charValue();
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59 }
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60 short checkedShortValue() throws InvalidTypeException {
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61 return shortValue();
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62 }
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63 int checkedIntValue() throws InvalidTypeException {
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64 return intValue();
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65 }
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66 long checkedLongValue() throws InvalidTypeException {
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67 return longValue();
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68 }
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69 float checkedFloatValue() throws InvalidTypeException {
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70 return floatValue();
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71 }
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72
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73 final boolean checkedBooleanValue() throws InvalidTypeException {
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74 /*
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75 * Always disallow a conversion to boolean from any other
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76 * primitive
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77 */
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78 if (this instanceof BooleanValue) {
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79 return booleanValue();
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80 } else {
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81 throw new InvalidTypeException("Can't convert non-boolean value to boolean");
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82 }
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83 }
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84
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85 final double checkedDoubleValue() throws InvalidTypeException {
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86 /*
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87 * Can't overflow by converting to double, so this method
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88 * is never overridden
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89 */
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90 return doubleValue();
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91 }
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92
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93 }
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