Mercurial > hg > truffle
comparison graal/com.oracle.jvmci.meta/src/com/oracle/jvmci/meta/Value.java @ 21556:48c1ebd24120
renamed com.oracle.graal.api[meta|code] modules to com.oracle.jvmci.[meta|code] (JBS:GRAAL-53)
author | Doug Simon <doug.simon@oracle.com> |
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date | Wed, 27 May 2015 00:36:16 +0200 |
parents | graal/com.oracle.graal.api.meta/src/com/oracle/graal/api/meta/Value.java@082417ac43e4 |
children | 26774dc3a5e7 99fe8116f3e8 |
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21555:d12eaef9af72 | 21556:48c1ebd24120 |
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1 /* | |
2 * Copyright (c) 2009, 2014, 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.meta; | |
24 | |
25 /** | |
26 * Interface for values manipulated by the compiler. All values have a {@linkplain Kind kind} and | |
27 * are immutable. | |
28 */ | |
29 public interface Value extends KindProvider, TrustedInterface { | |
30 | |
31 AllocatableValue ILLEGAL = new AllocatableValue(LIRKind.Illegal) { | |
32 | |
33 @Override | |
34 public String toString() { | |
35 return "-"; | |
36 } | |
37 | |
38 @Override | |
39 public boolean equals(Object other) { | |
40 // Due to de-serialization this object may exist multiple times. So we compare classes | |
41 // instead of the individual objects. (This anonymous class has always the same meaning) | |
42 return other != null && this.getClass() == other.getClass(); | |
43 } | |
44 }; | |
45 | |
46 LIRKind getLIRKind(); | |
47 | |
48 /** | |
49 * Returns the platform specific kind used to store this value. | |
50 */ | |
51 PlatformKind getPlatformKind(); | |
52 | |
53 /** | |
54 * Checks if this value is identical to {@code other}. | |
55 * | |
56 * Warning: Use with caution! Usually equivalence {@link #equals(Object)} is sufficient and | |
57 * should be used. | |
58 */ | |
59 @ExcludeFromIdentityComparisonVerification | |
60 default boolean identityEquals(Value other) { | |
61 return this == other; | |
62 } | |
63 } |