1 | /* |
2 | * Copyright 2003-2005 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. Sun designates this |
8 | * particular file as subject to the "Classpath" exception as provided |
9 | * by Sun in the LICENSE file that accompanied this code. |
10 | * |
11 | * This code is distributed in the hope that it will be useful, but WITHOUT |
12 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
13 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
14 | * version 2 for more details (a copy is included in the LICENSE file that |
15 | * accompanied this code). |
16 | * |
17 | * You should have received a copy of the GNU General Public License version |
18 | * 2 along with this work; if not, write to the Free Software Foundation, |
19 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
20 | * |
21 | * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, |
22 | * CA 95054 USA or visit www.sun.com if you need additional information or |
23 | * have any questions. |
24 | */ |
25 | |
26 | package com.sun.tools.javac.jvm; |
27 | |
28 | import com.sun.tools.javac.code.*; |
29 | |
30 | |
31 | /** These pseudo-types appear in the generated verifier tables to |
32 | * indicate objects that have been allocated but not yet constructed. |
33 | * |
34 | * <p><b>This is NOT part of any API supported by Sun Microsystems. If |
35 | * you write code that depends on this, you do so at your own risk. |
36 | * This code and its internal interfaces are subject to change or |
37 | * deletion without notice.</b> |
38 | */ |
39 | class UninitializedType extends Type.DelegatedType { |
40 | public static final int UNINITIALIZED_THIS = TypeTags.TypeTagCount; |
41 | public static final int UNINITIALIZED_OBJECT = UNINITIALIZED_THIS + 1; |
42 | |
43 | public static UninitializedType uninitializedThis(Type qtype) { |
44 | return new UninitializedType(UNINITIALIZED_THIS, qtype, -1); |
45 | } |
46 | |
47 | public static UninitializedType uninitializedObject(Type qtype, int offset) { |
48 | return new UninitializedType(UNINITIALIZED_OBJECT, qtype, offset); |
49 | } |
50 | |
51 | public final int offset; // PC where allocation took place |
52 | private UninitializedType(int tag, Type qtype, int offset) { |
53 | super(tag, qtype); |
54 | this.offset = offset; |
55 | } |
56 | |
57 | Type initializedType() { |
58 | return qtype; |
59 | } |
60 | } |