Mercurial > hg > graal-jvmci-8
comparison graal/com.oracle.truffle.object.basic/src/com/oracle/truffle/object/basic/BasicLayout.java @ 18408:2c3666f44855
Truffle: initial commit of object API implementation
author | Andreas Woess <andreas.woess@jku.at> |
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date | Tue, 18 Nov 2014 23:19:43 +0100 |
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18407:f439fdb137a3 | 18408:2c3666f44855 |
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1 /* | |
2 * Copyright (c) 2012, 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.truffle.object.basic; | |
24 | |
25 import java.util.*; | |
26 | |
27 import com.oracle.truffle.api.object.*; | |
28 import com.oracle.truffle.api.object.Shape.Allocator; | |
29 import com.oracle.truffle.object.*; | |
30 import com.oracle.truffle.object.LocationImpl.InternalLongLocation; | |
31 import com.oracle.truffle.object.Locations.DualLocation; | |
32 import com.oracle.truffle.object.basic.BasicLocations.ObjectFieldLocation; | |
33 import com.oracle.truffle.object.basic.BasicLocations.SimpleObjectFieldLocation; | |
34 | |
35 public class BasicLayout extends LayoutImpl { | |
36 private final ObjectLocation[] objectFields; | |
37 private final InternalLongLocation[] primitiveFields; | |
38 private final Location objectArrayLocation; | |
39 private final Location primitiveArrayLocation; | |
40 | |
41 BasicLayout(EnumSet<ImplicitCast> allowedImplicitCasts, LayoutStrategy strategy) { | |
42 super(allowedImplicitCasts, DynamicObjectBasic.class, strategy); | |
43 this.objectFields = DynamicObjectBasic.OBJECT_FIELD_LOCATIONS; | |
44 this.primitiveFields = DynamicObjectBasic.PRIMITIVE_FIELD_LOCATIONS; | |
45 this.primitiveArrayLocation = DynamicObjectBasic.PRIMITIVE_ARRAY_LOCATION; | |
46 this.objectArrayLocation = DynamicObjectBasic.OBJECT_ARRAY_LOCATION; | |
47 } | |
48 | |
49 static LayoutImpl createLayoutImpl(EnumSet<ImplicitCast> allowedImplicitCasts, LayoutStrategy strategy) { | |
50 return new BasicLayout(allowedImplicitCasts, strategy); | |
51 } | |
52 | |
53 @Override | |
54 public DynamicObject newInstance(Shape shape) { | |
55 return new DynamicObjectBasic(shape); | |
56 } | |
57 | |
58 @Override | |
59 public Shape createShape(ObjectType operations, Object sharedData, int id) { | |
60 return new ShapeBasic(this, sharedData, operations, id); | |
61 } | |
62 | |
63 @Override | |
64 protected boolean hasObjectExtensionArray() { | |
65 return true; | |
66 } | |
67 | |
68 @Override | |
69 protected boolean hasPrimitiveExtensionArray() { | |
70 return true; | |
71 } | |
72 | |
73 @Override | |
74 protected int getObjectFieldCount() { | |
75 return objectFields.length; | |
76 } | |
77 | |
78 @Override | |
79 protected int getPrimitiveFieldCount() { | |
80 return primitiveFields.length; | |
81 } | |
82 | |
83 @Override | |
84 protected Location getObjectArrayLocation() { | |
85 return objectArrayLocation; | |
86 } | |
87 | |
88 @Override | |
89 protected Location getPrimitiveArrayLocation() { | |
90 return primitiveArrayLocation; | |
91 } | |
92 | |
93 protected ObjectLocation getObjectFieldLocation(int index) { | |
94 return objectFields[index]; | |
95 } | |
96 | |
97 protected InternalLongLocation getPrimitiveFieldLocation(int index) { | |
98 return primitiveFields[index]; | |
99 } | |
100 | |
101 @Override | |
102 public Allocator createAllocator() { | |
103 LayoutImpl layout = this; | |
104 Allocator allocator = getStrategy().createAllocator(layout); | |
105 return allocator; | |
106 } | |
107 | |
108 @Override | |
109 protected int objectFieldIndex(Location location) { | |
110 if (location instanceof DualLocation) { | |
111 return objectFieldIndex((Location) ((DualLocation) location).getObjectLocation()); | |
112 } else if (location instanceof ObjectFieldLocation) { | |
113 return ((ObjectFieldLocation) location).getIndex(); | |
114 } else if (location instanceof SimpleObjectFieldLocation) { | |
115 return ((SimpleObjectFieldLocation) location).getIndex(); | |
116 } else { | |
117 return 0; | |
118 } | |
119 } | |
120 } |