01: /*
02: * Copyright 2003-2005 Sun Microsystems, Inc. All Rights Reserved.
03: * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
04: *
05: * This code is free software; you can redistribute it and/or modify it
06: * under the terms of the GNU General Public License version 2 only, as
07: * published by the Free Software Foundation. Sun designates this
08: * particular file as subject to the "Classpath" exception as provided
09: * 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: import com.sun.tools.javac.util.Version;
31:
32: /** These pseudo-types appear in the generated verifier tables to
33: * indicate objects that have been allocated but not yet constructed.
34: *
35: * <p><b>This is NOT part of any API supported by Sun Microsystems. If
36: * you write code that depends on this, you do so at your own risk.
37: * This code and its internal interfaces are subject to change or
38: * deletion without notice.</b>
39: */
40: @Version("@(#)UninitializedType.java 1.12 07/05/05")
41: class UninitializedType extends Type.DelegatedType {
42: public static final int UNINITIALIZED_THIS = TypeTags.TypeTagCount;
43: public static final int UNINITIALIZED_OBJECT = UNINITIALIZED_THIS + 1;
44:
45: public static UninitializedType uninitializedThis(Type qtype) {
46: return new UninitializedType(UNINITIALIZED_THIS, qtype, -1);
47: }
48:
49: public static UninitializedType uninitializedObject(Type qtype,
50: int offset) {
51: return new UninitializedType(UNINITIALIZED_OBJECT, qtype,
52: offset);
53: }
54:
55: public final int offset; // PC where allocation took place
56:
57: private UninitializedType(int tag, Type qtype, int offset) {
58: super (tag, qtype);
59: this .offset = offset;
60: }
61:
62: Type initializedType() {
63: return qtype;
64: }
65: }
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