Mercurial > hg > truffle
annotate agent/src/share/classes/sun/jvm/hotspot/jdi/LocalVariableImpl.java @ 2245:638119ce7cfd
7009309: JSR 292: compiler/6991596/Test6991596.java crashes on fastdebug JDK7/b122
Reviewed-by: kvn, never
author | twisti |
---|---|
date | Tue, 01 Feb 2011 03:38:44 -0800 |
parents | c18cbe5936b8 |
children | 37be97a58393 |
rev | line source |
---|---|
0 | 1 /* |
1552
c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
trims
parents:
0
diff
changeset
|
2 * Copyright (c) 2002, 2004, Oracle and/or its affiliates. All rights reserved. |
0 | 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 * | |
1552
c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
trims
parents:
0
diff
changeset
|
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
trims
parents:
0
diff
changeset
|
20 * or visit www.oracle.com if you need additional information or have any |
c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
trims
parents:
0
diff
changeset
|
21 * questions. |
0 | 22 * |
23 */ | |
24 | |
25 package sun.jvm.hotspot.jdi; | |
26 import com.sun.jdi.*; | |
27 | |
28 public class LocalVariableImpl extends MirrorImpl | |
29 implements LocalVariable, ValueContainer | |
30 { | |
31 private final Method method; | |
32 private final int slot; | |
33 private final Location scopeStart; | |
34 private final Location scopeEnd; | |
35 private final String name; | |
36 private final String signature; | |
37 private final String genericSignature; | |
38 | |
39 LocalVariableImpl(VirtualMachine vm, Method method, | |
40 int slot, Location scopeStart, Location scopeEnd, | |
41 String name, String signature, String genericSignature) { | |
42 super(vm); | |
43 this.method = method; | |
44 this.slot = slot; | |
45 this.scopeStart = scopeStart; | |
46 this.scopeEnd = scopeEnd; | |
47 this.name = name; | |
48 this.signature = signature; | |
49 this.genericSignature = genericSignature; | |
50 } | |
51 | |
52 public boolean equals(Object obj) { | |
53 if ((obj != null) && (obj instanceof LocalVariableImpl)) { | |
54 LocalVariableImpl other = (LocalVariableImpl)obj; | |
55 return (method.equals(other.method) && | |
56 slot() == other.slot() && | |
57 super.equals(obj)); | |
58 } else { | |
59 return false; | |
60 } | |
61 } | |
62 | |
63 public int hashCode() { | |
64 /* | |
65 * TO DO: Better hash code | |
66 */ | |
67 return (int)method.hashCode() + slot(); | |
68 } | |
69 | |
70 public int compareTo(Object object) { | |
71 LocalVariableImpl other = (LocalVariableImpl)object; | |
72 int rc = method.compareTo(other.method); | |
73 if (rc == 0) { | |
74 rc = slot() - other.slot(); | |
75 } | |
76 return rc; | |
77 } | |
78 | |
79 public String name() { | |
80 return name; | |
81 } | |
82 | |
83 /** | |
84 * @return a text representation of the declared type | |
85 * of this variable. | |
86 */ | |
87 public String typeName() { | |
88 JNITypeParser parser = new JNITypeParser(signature); | |
89 return parser.typeName(); | |
90 } | |
91 | |
92 public Type type() throws ClassNotLoadedException { | |
93 return findType(signature()); | |
94 } | |
95 | |
96 public Type findType(String signature) throws ClassNotLoadedException { | |
97 ReferenceTypeImpl enclosing = (ReferenceTypeImpl)method.declaringType(); | |
98 return enclosing.findType(signature); | |
99 } | |
100 | |
101 public String signature() { | |
102 return signature; | |
103 } | |
104 | |
105 public String genericSignature() { | |
106 return genericSignature; | |
107 } | |
108 | |
109 public boolean isVisible(StackFrame frame) { | |
110 //validateMirror(frame); | |
111 Method frameMethod = frame.location().method(); | |
112 | |
113 if (!frameMethod.equals(method)) { | |
114 throw new IllegalArgumentException( | |
115 "frame method different than variable's method"); | |
116 } | |
117 | |
118 // this is here to cover the possibility that we will | |
119 // allow LocalVariables for native methods. If we do | |
120 // so we will have to re-examinine this. | |
121 if (frameMethod.isNative()) { | |
122 return false; | |
123 } | |
124 | |
125 return ((scopeStart.compareTo(frame.location()) <= 0) | |
126 && (scopeEnd.compareTo(frame.location()) >= 0)); | |
127 } | |
128 | |
129 public boolean isArgument() { | |
130 try { | |
131 MethodImpl method = (MethodImpl)scopeStart.method(); | |
132 return (slot < method.argSlotCount()); | |
133 } catch (AbsentInformationException e) { | |
134 // If this variable object exists, there shouldn't be absent info | |
135 throw (InternalException) new InternalException().initCause(e); | |
136 } | |
137 } | |
138 | |
139 int slot() { | |
140 return slot; | |
141 } | |
142 | |
143 /* | |
144 * Compilers/VMs can have byte code ranges for variables of the | |
145 * same names that overlap. This is because the byte code ranges | |
146 * aren't necessarily scopes; they may have more to do with the | |
147 * lifetime of the variable's slot, depending on implementation. | |
148 * | |
149 * This method determines whether this variable hides an | |
150 * identically named variable; ie, their byte code ranges overlap | |
151 * this one starts after the given one. If it returns true this | |
152 * variable should be preferred when looking for a single variable | |
153 * with its name when both variables are visible. | |
154 */ | |
155 boolean hides(LocalVariable other) { | |
156 LocalVariableImpl otherImpl = (LocalVariableImpl)other; | |
157 if (!method.equals(otherImpl.method) || | |
158 !name.equals(otherImpl.name)) { | |
159 return false; | |
160 } else { | |
161 return (scopeStart.compareTo(otherImpl.scopeStart) > 0); | |
162 } | |
163 } | |
164 | |
165 public String toString() { | |
166 return name() + " in " + method.toString() + | |
167 "@" + scopeStart.toString(); | |
168 } | |
169 } |