Mercurial > hg > truffle
comparison agent/src/share/classes/sun/jvm/hotspot/utilities/soql/JSJavaKlass.java @ 0:a61af66fc99e jdk7-b24
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author | duke |
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date | Sat, 01 Dec 2007 00:00:00 +0000 |
parents | |
children | c18cbe5936b8 |
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-1:000000000000 | 0:a61af66fc99e |
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1 /* | |
2 * Copyright 2004-2007 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.utilities.soql; | |
26 | |
27 import java.util.*; | |
28 import sun.jvm.hotspot.oops.*; | |
29 import sun.jvm.hotspot.utilities.*; | |
30 | |
31 /** | |
32 This is JavaScript wrapper for Klass. | |
33 */ | |
34 public abstract class JSJavaKlass { | |
35 private static final int FIELD_SUPER_CLASS = 0; | |
36 private static final int FIELD_NAME = 1; | |
37 private static final int FIELD_IS_ARRAY_CLASS = 2; | |
38 private static final int FIELD_UNDEFINED = -1; | |
39 | |
40 public JSJavaKlass(Klass klass, JSJavaFactory factory) { | |
41 this.factory = factory; | |
42 this.klass = klass; | |
43 } | |
44 | |
45 public final Klass getKlass() { | |
46 return klass; | |
47 } | |
48 | |
49 public JSJavaClass getJSJavaClass() { | |
50 return (JSJavaClass) factory.newJSJavaObject(getKlass().getJavaMirror()); | |
51 } | |
52 | |
53 public Object getMetaClassFieldValue(String name) { | |
54 int fieldID = getFieldID(name); | |
55 switch (fieldID) { | |
56 case FIELD_SUPER_CLASS: { | |
57 JSJavaKlass jk = factory.newJSJavaKlass(getKlass().getSuper()); | |
58 return (jk != null) ? jk.getJSJavaClass() : null; | |
59 } | |
60 case FIELD_NAME: | |
61 return getName(); | |
62 case FIELD_IS_ARRAY_CLASS: | |
63 return Boolean.valueOf(isArray()); | |
64 case FIELD_UNDEFINED: | |
65 default: | |
66 return ScriptObject.UNDEFINED; | |
67 } | |
68 } | |
69 | |
70 public boolean hasMetaClassField(String name) { | |
71 return getFieldID(name) != FIELD_UNDEFINED; | |
72 } | |
73 | |
74 | |
75 public String[] getMetaClassFieldNames() { | |
76 String[] res = { "name", "superClass", "isArrayClass" }; | |
77 return res; | |
78 } | |
79 | |
80 public abstract String getName(); | |
81 public abstract boolean isArray(); | |
82 | |
83 //-- Internals only below this point | |
84 private static Map fields = new HashMap(); | |
85 private static void addField(String name, int fieldId) { | |
86 fields.put(name, new Integer(fieldId)); | |
87 } | |
88 | |
89 private static int getFieldID(String name) { | |
90 Integer res = (Integer) fields.get(name); | |
91 return (res != null)? res.intValue() : FIELD_UNDEFINED; | |
92 } | |
93 | |
94 static { | |
95 addField("base", FIELD_SUPER_CLASS); | |
96 addField("baseClass", FIELD_SUPER_CLASS); | |
97 addField("superClass", FIELD_SUPER_CLASS); | |
98 addField("name", FIELD_NAME); | |
99 addField("isArrayClass", FIELD_IS_ARRAY_CLASS); | |
100 } | |
101 | |
102 protected final JSJavaFactory factory; | |
103 private final Klass klass; | |
104 } |