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1 /*
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2 * Copyright 2001 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.debugger.cdbg.basic;
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26
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27 import java.util.*;
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28 import sun.jvm.hotspot.debugger.*;
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29 import sun.jvm.hotspot.debugger.cdbg.*;
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30 import sun.jvm.hotspot.utilities.Assert;
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31
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32 public class BasicEnumType extends BasicIntType implements EnumType {
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33 // Integer type or lazy type
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34 private Type underlyingType;
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35
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36 private static class Enum {
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37 String name;
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38 long value;
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39 Enum(String name, long value) {
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40 this.name = name;
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41 this.value = value;
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42 }
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43
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44 String getName() { return name; }
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45 long getValue() { return value; }
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46 }
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47 private List/*<Enum>*/ enums;
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48
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49 /** Underlying type of enum must be an integer type (or as yet
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50 unresolved) */
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51
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52 public BasicEnumType(String name, Type underlyingType) {
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53 this(name, underlyingType, 0);
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54 }
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55
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56 private BasicEnumType(String name, Type underlyingType, int cvAttributes) {
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57 super(name, 0, false, cvAttributes);
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58 this.underlyingType = underlyingType;
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59 }
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60
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61 public EnumType asEnum() { return this; }
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62
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63 public int getSize() { return underlyingType.getSize(); }
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64 public boolean isUnsigned() {
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65 if (underlyingType.isInt()) {
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66 return ((IntType) underlyingType).isUnsigned();
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67 }
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68 return false;
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69 }
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70
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71 public void addEnum(String name, long val) {
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72 if (enums == null) {
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73 enums = new ArrayList();
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74 }
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75 enums.add(new Enum(name, val));
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76 }
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77
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78 public int getNumEnumerates() { return enums.size(); }
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79 public String getEnumName(int i) { return ((Enum) enums.get(i)).getName(); }
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80 public long getEnumValue(int i) { return ((Enum) enums.get(i)).getValue(); }
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81
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82 public String enumNameForValue(long val) {
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83 if (enums == null) {
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84 return null;
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85 }
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86
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87 for (Iterator iter = enums.iterator(); iter.hasNext(); ) {
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88 Enum e = (Enum) iter.next();
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89 if (e.getValue() == val) {
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90 return e.getName();
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91 }
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92 }
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93
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94 return null;
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95 }
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96
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97 Type resolveTypes(BasicCDebugInfoDataBase db, ResolveListener listener) {
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98 super.resolveTypes(db, listener);
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99 underlyingType = db.resolveType(this, underlyingType, listener, "resolving enum type");
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100 if (Assert.ASSERTS_ENABLED) {
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101 BasicType b = (BasicType) underlyingType;
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102 Assert.that(b.isLazy() || b.isInt(),
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103 "Underlying type of enum must be integer type (or unresolved due to error)");
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104 }
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105 return this;
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106 }
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107
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108 public void iterateObject(Address a, ObjectVisitor v, FieldIdentifier f) {
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109 long val = a.getCIntegerAt(0, getSize(), isUnsigned());
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110 v.doEnum(f, val, enumNameForValue(val));
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111 }
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112
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113 protected Type createCVVariant(int cvAttributes) {
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114 BasicEnumType t = new BasicEnumType(getName(), underlyingType, cvAttributes);
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115 t.enums = enums;
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116 return t;
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117 }
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118
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119 public void visit(TypeVisitor v) {
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120 v.doEnumType(this);
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121 }
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122 }
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