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comparison graal/com.oracle.max.cri/src/com/sun/cri/ri/RiType.java @ 3733:e233f5660da4

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Added Java files from Maxine project.
author Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
date Sat, 17 Dec 2011 19:59:18 +0100
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3732:3e2e8b8abdaf 3733:e233f5660da4
1 /*
2 * Copyright (c) 2009, 2011, 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.sun.cri.ri;
24
25 import com.sun.cri.ci.*;
26
27 /**
28 * Represents a resolved or unresolved type in the compiler-runtime interface. Types include primitives, objects, {@code void},
29 * and arrays thereof.
30 */
31 public interface RiType {
32
33 /**
34 * Represents each of the several different parts of the runtime representation of
35 * a type which compiled code may need to reference individually. These may or may not be
36 * different objects or data structures, depending on the runtime system.
37 */
38 public enum Representation {
39 /**
40 * The runtime representation of the data structure containing the static fields of this type.
41 */
42 StaticFields,
43
44 /**
45 * The runtime representation of the Java class object of this type.
46 */
47 JavaClass,
48
49 /**
50 * The runtime representation of the "hub" of this type--that is, the closest part of the type
51 * representation which is typically stored in the object header.
52 */
53 ObjectHub,
54
55 /**
56 * The runtime representation of the type information for an object, which is typically used
57 * for subtype tests.
58 */
59 TypeInfo
60 }
61
62 /**
63 * Gets the name of this type in internal form. The following are examples of strings returned by this method:
64 * <pre>
65 * "Ljava/lang/Object;"
66 * "I"
67 * "[[B"
68 * </pre>
69 *
70 * @return the name of this type in internal form
71 */
72 String name();
73
74 /**
75 * For array types, gets the type of the components.
76 * @return the component type of this array type
77 */
78 RiType componentType();
79
80 /**
81 * Gets the type representing an array with elements of this type.
82 * @return a new compiler interface type representing an array of this type
83 */
84 RiType arrayOf();
85
86 /**
87 * Gets the kind of this compiler interface type.
88 * @param architecture When true, the architecture-specific kind used for emitting machine code is returned.
89 * When false, the kind according to the Java specification is returned.
90 * @return the kind
91 */
92 CiKind kind(boolean architecture);
93
94 /**
95 * Gets the kind used to represent the specified part of this type.
96 * @param r the part of the this type
97 * @return the kind of constants for the specified part of the type
98 */
99 CiKind getRepresentationKind(Representation r);
100 }