Mercurial > hg > graal-compiler
annotate graal/com.oracle.graal.api.meta/src/com/oracle/graal/api/meta/NullConstant.java @ 18187:9619ba4daf4c
Rename Constant to JavaConstant.
author | Roland Schatz <roland.schatz@oracle.com> |
---|---|
date | Thu, 30 Oct 2014 12:21:07 +0100 |
parents | ef357effbda7 |
children | 0093dcea7092 |
rev | line source |
---|---|
15018
db4254246f9a
Remove Constant.forObject and Constant.asObject to improve compiler/VM separation
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff
changeset
|
1 /* |
db4254246f9a
Remove Constant.forObject and Constant.asObject to improve compiler/VM separation
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff
changeset
|
2 * Copyright (c) 2014, 2014, Oracle and/or its affiliates. All rights reserved. |
db4254246f9a
Remove Constant.forObject and Constant.asObject to improve compiler/VM separation
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff
changeset
|
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
db4254246f9a
Remove Constant.forObject and Constant.asObject to improve compiler/VM separation
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff
changeset
|
4 * |
db4254246f9a
Remove Constant.forObject and Constant.asObject to improve compiler/VM separation
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff
changeset
|
5 * This code is free software; you can redistribute it and/or modify it |
db4254246f9a
Remove Constant.forObject and Constant.asObject to improve compiler/VM separation
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff
changeset
|
6 * under the terms of the GNU General Public License version 2 only, as |
db4254246f9a
Remove Constant.forObject and Constant.asObject to improve compiler/VM separation
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff
changeset
|
7 * published by the Free Software Foundation. |
db4254246f9a
Remove Constant.forObject and Constant.asObject to improve compiler/VM separation
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff
changeset
|
8 * |
db4254246f9a
Remove Constant.forObject and Constant.asObject to improve compiler/VM separation
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff
changeset
|
9 * This code is distributed in the hope that it will be useful, but WITHOUT |
db4254246f9a
Remove Constant.forObject and Constant.asObject to improve compiler/VM separation
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff
changeset
|
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
db4254246f9a
Remove Constant.forObject and Constant.asObject to improve compiler/VM separation
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff
changeset
|
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
db4254246f9a
Remove Constant.forObject and Constant.asObject to improve compiler/VM separation
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff
changeset
|
12 * version 2 for more details (a copy is included in the LICENSE file that |
db4254246f9a
Remove Constant.forObject and Constant.asObject to improve compiler/VM separation
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff
changeset
|
13 * accompanied this code). |
db4254246f9a
Remove Constant.forObject and Constant.asObject to improve compiler/VM separation
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff
changeset
|
14 * |
db4254246f9a
Remove Constant.forObject and Constant.asObject to improve compiler/VM separation
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff
changeset
|
15 * You should have received a copy of the GNU General Public License version |
db4254246f9a
Remove Constant.forObject and Constant.asObject to improve compiler/VM separation
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff
changeset
|
16 * 2 along with this work; if not, write to the Free Software Foundation, |
db4254246f9a
Remove Constant.forObject and Constant.asObject to improve compiler/VM separation
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff
changeset
|
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
db4254246f9a
Remove Constant.forObject and Constant.asObject to improve compiler/VM separation
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff
changeset
|
18 * |
db4254246f9a
Remove Constant.forObject and Constant.asObject to improve compiler/VM separation
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff
changeset
|
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
db4254246f9a
Remove Constant.forObject and Constant.asObject to improve compiler/VM separation
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff
changeset
|
20 * or visit www.oracle.com if you need additional information or have any |
db4254246f9a
Remove Constant.forObject and Constant.asObject to improve compiler/VM separation
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff
changeset
|
21 * questions. |
db4254246f9a
Remove Constant.forObject and Constant.asObject to improve compiler/VM separation
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff
changeset
|
22 */ |
db4254246f9a
Remove Constant.forObject and Constant.asObject to improve compiler/VM separation
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff
changeset
|
23 package com.oracle.graal.api.meta; |
db4254246f9a
Remove Constant.forObject and Constant.asObject to improve compiler/VM separation
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff
changeset
|
24 |
db4254246f9a
Remove Constant.forObject and Constant.asObject to improve compiler/VM separation
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff
changeset
|
25 /** |
18187
9619ba4daf4c
Rename Constant to JavaConstant.
Roland Schatz <roland.schatz@oracle.com>
parents:
18186
diff
changeset
|
26 * The implementation type of the {@link JavaConstant#NULL_OBJECT null constant}. |
15018
db4254246f9a
Remove Constant.forObject and Constant.asObject to improve compiler/VM separation
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff
changeset
|
27 */ |
18187
9619ba4daf4c
Rename Constant to JavaConstant.
Roland Schatz <roland.schatz@oracle.com>
parents:
18186
diff
changeset
|
28 final class NullConstant extends JavaConstant { |
15018
db4254246f9a
Remove Constant.forObject and Constant.asObject to improve compiler/VM separation
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff
changeset
|
29 |
db4254246f9a
Remove Constant.forObject and Constant.asObject to improve compiler/VM separation
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff
changeset
|
30 private static final long serialVersionUID = 8906209595800783961L; |
db4254246f9a
Remove Constant.forObject and Constant.asObject to improve compiler/VM separation
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff
changeset
|
31 |
db4254246f9a
Remove Constant.forObject and Constant.asObject to improve compiler/VM separation
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff
changeset
|
32 protected NullConstant() { |
16094
c0b8d395368b
Introduce LIRKind to accurately track oop references in backend.
Roland Schatz <roland.schatz@oracle.com>
parents:
15018
diff
changeset
|
33 super(LIRKind.reference(Kind.Object)); |
15018
db4254246f9a
Remove Constant.forObject and Constant.asObject to improve compiler/VM separation
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff
changeset
|
34 } |
db4254246f9a
Remove Constant.forObject and Constant.asObject to improve compiler/VM separation
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff
changeset
|
35 |
db4254246f9a
Remove Constant.forObject and Constant.asObject to improve compiler/VM separation
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff
changeset
|
36 @Override |
db4254246f9a
Remove Constant.forObject and Constant.asObject to improve compiler/VM separation
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff
changeset
|
37 public boolean isNull() { |
db4254246f9a
Remove Constant.forObject and Constant.asObject to improve compiler/VM separation
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff
changeset
|
38 return true; |
db4254246f9a
Remove Constant.forObject and Constant.asObject to improve compiler/VM separation
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff
changeset
|
39 } |
db4254246f9a
Remove Constant.forObject and Constant.asObject to improve compiler/VM separation
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff
changeset
|
40 |
db4254246f9a
Remove Constant.forObject and Constant.asObject to improve compiler/VM separation
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff
changeset
|
41 @Override |
db4254246f9a
Remove Constant.forObject and Constant.asObject to improve compiler/VM separation
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff
changeset
|
42 public boolean isDefaultForKind() { |
db4254246f9a
Remove Constant.forObject and Constant.asObject to improve compiler/VM separation
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff
changeset
|
43 return true; |
db4254246f9a
Remove Constant.forObject and Constant.asObject to improve compiler/VM separation
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff
changeset
|
44 } |
db4254246f9a
Remove Constant.forObject and Constant.asObject to improve compiler/VM separation
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff
changeset
|
45 |
db4254246f9a
Remove Constant.forObject and Constant.asObject to improve compiler/VM separation
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff
changeset
|
46 @Override |
18186
ef357effbda7
Backout of changeset 9a804ec7f707 (converted Constant and Value to be interfaces).
Roland Schatz <roland.schatz@oracle.com>
parents:
17449
diff
changeset
|
47 public Object asBoxedPrimitive() { |
ef357effbda7
Backout of changeset 9a804ec7f707 (converted Constant and Value to be interfaces).
Roland Schatz <roland.schatz@oracle.com>
parents:
17449
diff
changeset
|
48 throw new IllegalArgumentException(); |
ef357effbda7
Backout of changeset 9a804ec7f707 (converted Constant and Value to be interfaces).
Roland Schatz <roland.schatz@oracle.com>
parents:
17449
diff
changeset
|
49 } |
ef357effbda7
Backout of changeset 9a804ec7f707 (converted Constant and Value to be interfaces).
Roland Schatz <roland.schatz@oracle.com>
parents:
17449
diff
changeset
|
50 |
ef357effbda7
Backout of changeset 9a804ec7f707 (converted Constant and Value to be interfaces).
Roland Schatz <roland.schatz@oracle.com>
parents:
17449
diff
changeset
|
51 @Override |
ef357effbda7
Backout of changeset 9a804ec7f707 (converted Constant and Value to be interfaces).
Roland Schatz <roland.schatz@oracle.com>
parents:
17449
diff
changeset
|
52 public int asInt() { |
ef357effbda7
Backout of changeset 9a804ec7f707 (converted Constant and Value to be interfaces).
Roland Schatz <roland.schatz@oracle.com>
parents:
17449
diff
changeset
|
53 throw new IllegalArgumentException(); |
ef357effbda7
Backout of changeset 9a804ec7f707 (converted Constant and Value to be interfaces).
Roland Schatz <roland.schatz@oracle.com>
parents:
17449
diff
changeset
|
54 } |
ef357effbda7
Backout of changeset 9a804ec7f707 (converted Constant and Value to be interfaces).
Roland Schatz <roland.schatz@oracle.com>
parents:
17449
diff
changeset
|
55 |
ef357effbda7
Backout of changeset 9a804ec7f707 (converted Constant and Value to be interfaces).
Roland Schatz <roland.schatz@oracle.com>
parents:
17449
diff
changeset
|
56 @Override |
ef357effbda7
Backout of changeset 9a804ec7f707 (converted Constant and Value to be interfaces).
Roland Schatz <roland.schatz@oracle.com>
parents:
17449
diff
changeset
|
57 public boolean asBoolean() { |
ef357effbda7
Backout of changeset 9a804ec7f707 (converted Constant and Value to be interfaces).
Roland Schatz <roland.schatz@oracle.com>
parents:
17449
diff
changeset
|
58 throw new IllegalArgumentException(); |
ef357effbda7
Backout of changeset 9a804ec7f707 (converted Constant and Value to be interfaces).
Roland Schatz <roland.schatz@oracle.com>
parents:
17449
diff
changeset
|
59 } |
ef357effbda7
Backout of changeset 9a804ec7f707 (converted Constant and Value to be interfaces).
Roland Schatz <roland.schatz@oracle.com>
parents:
17449
diff
changeset
|
60 |
ef357effbda7
Backout of changeset 9a804ec7f707 (converted Constant and Value to be interfaces).
Roland Schatz <roland.schatz@oracle.com>
parents:
17449
diff
changeset
|
61 @Override |
ef357effbda7
Backout of changeset 9a804ec7f707 (converted Constant and Value to be interfaces).
Roland Schatz <roland.schatz@oracle.com>
parents:
17449
diff
changeset
|
62 public long asLong() { |
ef357effbda7
Backout of changeset 9a804ec7f707 (converted Constant and Value to be interfaces).
Roland Schatz <roland.schatz@oracle.com>
parents:
17449
diff
changeset
|
63 throw new IllegalArgumentException(); |
ef357effbda7
Backout of changeset 9a804ec7f707 (converted Constant and Value to be interfaces).
Roland Schatz <roland.schatz@oracle.com>
parents:
17449
diff
changeset
|
64 } |
ef357effbda7
Backout of changeset 9a804ec7f707 (converted Constant and Value to be interfaces).
Roland Schatz <roland.schatz@oracle.com>
parents:
17449
diff
changeset
|
65 |
ef357effbda7
Backout of changeset 9a804ec7f707 (converted Constant and Value to be interfaces).
Roland Schatz <roland.schatz@oracle.com>
parents:
17449
diff
changeset
|
66 @Override |
ef357effbda7
Backout of changeset 9a804ec7f707 (converted Constant and Value to be interfaces).
Roland Schatz <roland.schatz@oracle.com>
parents:
17449
diff
changeset
|
67 public float asFloat() { |
ef357effbda7
Backout of changeset 9a804ec7f707 (converted Constant and Value to be interfaces).
Roland Schatz <roland.schatz@oracle.com>
parents:
17449
diff
changeset
|
68 throw new IllegalArgumentException(); |
ef357effbda7
Backout of changeset 9a804ec7f707 (converted Constant and Value to be interfaces).
Roland Schatz <roland.schatz@oracle.com>
parents:
17449
diff
changeset
|
69 } |
ef357effbda7
Backout of changeset 9a804ec7f707 (converted Constant and Value to be interfaces).
Roland Schatz <roland.schatz@oracle.com>
parents:
17449
diff
changeset
|
70 |
ef357effbda7
Backout of changeset 9a804ec7f707 (converted Constant and Value to be interfaces).
Roland Schatz <roland.schatz@oracle.com>
parents:
17449
diff
changeset
|
71 @Override |
ef357effbda7
Backout of changeset 9a804ec7f707 (converted Constant and Value to be interfaces).
Roland Schatz <roland.schatz@oracle.com>
parents:
17449
diff
changeset
|
72 public double asDouble() { |
ef357effbda7
Backout of changeset 9a804ec7f707 (converted Constant and Value to be interfaces).
Roland Schatz <roland.schatz@oracle.com>
parents:
17449
diff
changeset
|
73 throw new IllegalArgumentException(); |
ef357effbda7
Backout of changeset 9a804ec7f707 (converted Constant and Value to be interfaces).
Roland Schatz <roland.schatz@oracle.com>
parents:
17449
diff
changeset
|
74 } |
ef357effbda7
Backout of changeset 9a804ec7f707 (converted Constant and Value to be interfaces).
Roland Schatz <roland.schatz@oracle.com>
parents:
17449
diff
changeset
|
75 |
ef357effbda7
Backout of changeset 9a804ec7f707 (converted Constant and Value to be interfaces).
Roland Schatz <roland.schatz@oracle.com>
parents:
17449
diff
changeset
|
76 @Override |
15018
db4254246f9a
Remove Constant.forObject and Constant.asObject to improve compiler/VM separation
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff
changeset
|
77 public String toValueString() { |
db4254246f9a
Remove Constant.forObject and Constant.asObject to improve compiler/VM separation
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff
changeset
|
78 return "null"; |
db4254246f9a
Remove Constant.forObject and Constant.asObject to improve compiler/VM separation
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff
changeset
|
79 } |
db4254246f9a
Remove Constant.forObject and Constant.asObject to improve compiler/VM separation
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff
changeset
|
80 |
db4254246f9a
Remove Constant.forObject and Constant.asObject to improve compiler/VM separation
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff
changeset
|
81 @Override |
db4254246f9a
Remove Constant.forObject and Constant.asObject to improve compiler/VM separation
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff
changeset
|
82 public int hashCode() { |
db4254246f9a
Remove Constant.forObject and Constant.asObject to improve compiler/VM separation
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff
changeset
|
83 return System.identityHashCode(this); |
db4254246f9a
Remove Constant.forObject and Constant.asObject to improve compiler/VM separation
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff
changeset
|
84 } |
db4254246f9a
Remove Constant.forObject and Constant.asObject to improve compiler/VM separation
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff
changeset
|
85 |
db4254246f9a
Remove Constant.forObject and Constant.asObject to improve compiler/VM separation
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff
changeset
|
86 @Override |
db4254246f9a
Remove Constant.forObject and Constant.asObject to improve compiler/VM separation
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff
changeset
|
87 public boolean equals(Object o) { |
db4254246f9a
Remove Constant.forObject and Constant.asObject to improve compiler/VM separation
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff
changeset
|
88 assert o == this || !(o instanceof NullConstant) : "null constant is a singleton"; |
db4254246f9a
Remove Constant.forObject and Constant.asObject to improve compiler/VM separation
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff
changeset
|
89 return o == this; |
db4254246f9a
Remove Constant.forObject and Constant.asObject to improve compiler/VM separation
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff
changeset
|
90 } |
db4254246f9a
Remove Constant.forObject and Constant.asObject to improve compiler/VM separation
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff
changeset
|
91 } |