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comparison agent/src/share/classes/sun/jvm/hotspot/debugger/cdbg/basic/BasicEnumType.java @ 0:a61af66fc99e jdk7-b24

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author duke
date Sat, 01 Dec 2007 00:00:00 +0000
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-1:000000000000 0:a61af66fc99e
1 /*
2 * Copyright 2001 Sun Microsystems, Inc. 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.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
20 * CA 95054 USA or visit www.sun.com if you need additional information or
21 * have any questions.
22 *
23 */
24
25 package sun.jvm.hotspot.debugger.cdbg.basic;
26
27 import java.util.*;
28 import sun.jvm.hotspot.debugger.*;
29 import sun.jvm.hotspot.debugger.cdbg.*;
30 import sun.jvm.hotspot.utilities.Assert;
31
32 public class BasicEnumType extends BasicIntType implements EnumType {
33 // Integer type or lazy type
34 private Type underlyingType;
35
36 private static class Enum {
37 String name;
38 long value;
39 Enum(String name, long value) {
40 this.name = name;
41 this.value = value;
42 }
43
44 String getName() { return name; }
45 long getValue() { return value; }
46 }
47 private List/*<Enum>*/ enums;
48
49 /** Underlying type of enum must be an integer type (or as yet
50 unresolved) */
51
52 public BasicEnumType(String name, Type underlyingType) {
53 this(name, underlyingType, 0);
54 }
55
56 private BasicEnumType(String name, Type underlyingType, int cvAttributes) {
57 super(name, 0, false, cvAttributes);
58 this.underlyingType = underlyingType;
59 }
60
61 public EnumType asEnum() { return this; }
62
63 public int getSize() { return underlyingType.getSize(); }
64 public boolean isUnsigned() {
65 if (underlyingType.isInt()) {
66 return ((IntType) underlyingType).isUnsigned();
67 }
68 return false;
69 }
70
71 public void addEnum(String name, long val) {
72 if (enums == null) {
73 enums = new ArrayList();
74 }
75 enums.add(new Enum(name, val));
76 }
77
78 public int getNumEnumerates() { return enums.size(); }
79 public String getEnumName(int i) { return ((Enum) enums.get(i)).getName(); }
80 public long getEnumValue(int i) { return ((Enum) enums.get(i)).getValue(); }
81
82 public String enumNameForValue(long val) {
83 if (enums == null) {
84 return null;
85 }
86
87 for (Iterator iter = enums.iterator(); iter.hasNext(); ) {
88 Enum e = (Enum) iter.next();
89 if (e.getValue() == val) {
90 return e.getName();
91 }
92 }
93
94 return null;
95 }
96
97 Type resolveTypes(BasicCDebugInfoDataBase db, ResolveListener listener) {
98 super.resolveTypes(db, listener);
99 underlyingType = db.resolveType(this, underlyingType, listener, "resolving enum type");
100 if (Assert.ASSERTS_ENABLED) {
101 BasicType b = (BasicType) underlyingType;
102 Assert.that(b.isLazy() || b.isInt(),
103 "Underlying type of enum must be integer type (or unresolved due to error)");
104 }
105 return this;
106 }
107
108 public void iterateObject(Address a, ObjectVisitor v, FieldIdentifier f) {
109 long val = a.getCIntegerAt(0, getSize(), isUnsigned());
110 v.doEnum(f, val, enumNameForValue(val));
111 }
112
113 protected Type createCVVariant(int cvAttributes) {
114 BasicEnumType t = new BasicEnumType(getName(), underlyingType, cvAttributes);
115 t.enums = enums;
116 return t;
117 }
118
119 public void visit(TypeVisitor v) {
120 v.doEnumType(this);
121 }
122 }