Mercurial > hg > truffle
comparison graal/com.oracle.jvmci.hotspot/src/com/oracle/jvmci/hotspot/HotSpotCompressedNullConstant.java @ 21551:5324104ac4f3
moved com.oracle.graal.hotspot.jvmci classes to com.oracle.jvmci.hotspot module (JBS:GRAAL-53)
author | Doug Simon <doug.simon@oracle.com> |
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date | Tue, 26 May 2015 17:13:37 +0200 |
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21550:f48a6cea31eb | 21551:5324104ac4f3 |
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1 /* | |
2 * Copyright (c) 2014, 2015, Oracle and/or its affiliates. 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA | |
20 * or visit www.oracle.com if you need additional information or have any | |
21 * questions. | |
22 */ | |
23 package com.oracle.jvmci.hotspot; | |
24 | |
25 import com.oracle.graal.api.meta.*; | |
26 | |
27 /** | |
28 * The compressed representation of the {@link JavaConstant#NULL_POINTER null constant}. | |
29 */ | |
30 public final class HotSpotCompressedNullConstant extends AbstractValue implements JavaConstant, HotSpotConstant { | |
31 | |
32 public static final JavaConstant COMPRESSED_NULL = new HotSpotCompressedNullConstant(); | |
33 | |
34 private HotSpotCompressedNullConstant() { | |
35 super(LIRKind.reference(Kind.Int)); | |
36 } | |
37 | |
38 @Override | |
39 public boolean isNull() { | |
40 return true; | |
41 } | |
42 | |
43 @Override | |
44 public boolean isCompressed() { | |
45 return true; | |
46 } | |
47 | |
48 @Override | |
49 public boolean isDefaultForKind() { | |
50 return true; | |
51 } | |
52 | |
53 @Override | |
54 public Object asBoxedPrimitive() { | |
55 throw new IllegalArgumentException(); | |
56 } | |
57 | |
58 @Override | |
59 public int asInt() { | |
60 throw new IllegalArgumentException(); | |
61 } | |
62 | |
63 @Override | |
64 public boolean asBoolean() { | |
65 throw new IllegalArgumentException(); | |
66 } | |
67 | |
68 @Override | |
69 public long asLong() { | |
70 throw new IllegalArgumentException(); | |
71 } | |
72 | |
73 @Override | |
74 public float asFloat() { | |
75 throw new IllegalArgumentException(); | |
76 } | |
77 | |
78 @Override | |
79 public double asDouble() { | |
80 throw new IllegalArgumentException(); | |
81 } | |
82 | |
83 @Override | |
84 public String toString() { | |
85 return JavaConstant.toString(this); | |
86 } | |
87 | |
88 @Override | |
89 public String toValueString() { | |
90 return "null"; | |
91 } | |
92 | |
93 @Override | |
94 public int hashCode() { | |
95 return System.identityHashCode(this); | |
96 } | |
97 | |
98 @Override | |
99 public boolean equals(Object o) { | |
100 return o instanceof HotSpotCompressedNullConstant; | |
101 } | |
102 } |