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comparison graal/com.oracle.jvmci.hotspot/src/com/oracle/jvmci/hotspot/HotSpotCompressedNullConstant.java @ 21551:5324104ac4f3

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moved com.oracle.graal.hotspot.jvmci classes to com.oracle.jvmci.hotspot module (JBS:GRAAL-53)
author Doug Simon <doug.simon@oracle.com>
date Tue, 26 May 2015 17:13:37 +0200
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21550:f48a6cea31eb 21551:5324104ac4f3
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 }