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annotate graal/com.oracle.truffle.object.basic/src/com/oracle/truffle/object/basic/BasicLayout.java @ 18408:2c3666f44855

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Truffle: initial commit of object API implementation
author Andreas Woess <andreas.woess@jku.at>
date Tue, 18 Nov 2014 23:19:43 +0100
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18408
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1 /*
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2 * Copyright (c) 2012, 2014, Oracle and/or its affiliates. All rights reserved.
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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4 *
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5 * This code is free software; you can redistribute it and/or modify it
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6 * under the terms of the GNU General Public License version 2 only, as
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7 * published by the Free Software Foundation.
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8 *
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9 * This code is distributed in the hope that it will be useful, but WITHOUT
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10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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12 * version 2 for more details (a copy is included in the LICENSE file that
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13 * accompanied this code).
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14 *
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15 * You should have received a copy of the GNU General Public License version
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16 * 2 along with this work; if not, write to the Free Software Foundation,
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17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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18 *
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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20 * or visit www.oracle.com if you need additional information or have any
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21 * questions.
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22 */
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23 package com.oracle.truffle.object.basic;
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24
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25 import java.util.*;
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26
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27 import com.oracle.truffle.api.object.*;
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28 import com.oracle.truffle.api.object.Shape.Allocator;
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29 import com.oracle.truffle.object.*;
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30 import com.oracle.truffle.object.LocationImpl.InternalLongLocation;
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31 import com.oracle.truffle.object.Locations.DualLocation;
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32 import com.oracle.truffle.object.basic.BasicLocations.ObjectFieldLocation;
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33 import com.oracle.truffle.object.basic.BasicLocations.SimpleObjectFieldLocation;
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34
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35 public class BasicLayout extends LayoutImpl {
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36 private final ObjectLocation[] objectFields;
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37 private final InternalLongLocation[] primitiveFields;
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38 private final Location objectArrayLocation;
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39 private final Location primitiveArrayLocation;
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40
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41 BasicLayout(EnumSet<ImplicitCast> allowedImplicitCasts, LayoutStrategy strategy) {
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42 super(allowedImplicitCasts, DynamicObjectBasic.class, strategy);
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43 this.objectFields = DynamicObjectBasic.OBJECT_FIELD_LOCATIONS;
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44 this.primitiveFields = DynamicObjectBasic.PRIMITIVE_FIELD_LOCATIONS;
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45 this.primitiveArrayLocation = DynamicObjectBasic.PRIMITIVE_ARRAY_LOCATION;
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46 this.objectArrayLocation = DynamicObjectBasic.OBJECT_ARRAY_LOCATION;
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47 }
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48
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49 static LayoutImpl createLayoutImpl(EnumSet<ImplicitCast> allowedImplicitCasts, LayoutStrategy strategy) {
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50 return new BasicLayout(allowedImplicitCasts, strategy);
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51 }
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52
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53 @Override
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54 public DynamicObject newInstance(Shape shape) {
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55 return new DynamicObjectBasic(shape);
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56 }
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57
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58 @Override
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59 public Shape createShape(ObjectType operations, Object sharedData, int id) {
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60 return new ShapeBasic(this, sharedData, operations, id);
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61 }
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62
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63 @Override
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64 protected boolean hasObjectExtensionArray() {
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65 return true;
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66 }
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67
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68 @Override
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69 protected boolean hasPrimitiveExtensionArray() {
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70 return true;
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71 }
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72
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73 @Override
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74 protected int getObjectFieldCount() {
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75 return objectFields.length;
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76 }
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77
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78 @Override
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79 protected int getPrimitiveFieldCount() {
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80 return primitiveFields.length;
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81 }
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82
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83 @Override
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84 protected Location getObjectArrayLocation() {
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85 return objectArrayLocation;
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86 }
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87
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88 @Override
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89 protected Location getPrimitiveArrayLocation() {
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90 return primitiveArrayLocation;
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91 }
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92
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93 protected ObjectLocation getObjectFieldLocation(int index) {
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94 return objectFields[index];
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95 }
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96
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97 protected InternalLongLocation getPrimitiveFieldLocation(int index) {
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98 return primitiveFields[index];
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99 }
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100
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101 @Override
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102 public Allocator createAllocator() {
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103 LayoutImpl layout = this;
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104 Allocator allocator = getStrategy().createAllocator(layout);
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105 return allocator;
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106 }
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107
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108 @Override
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109 protected int objectFieldIndex(Location location) {
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110 if (location instanceof DualLocation) {
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111 return objectFieldIndex((Location) ((DualLocation) location).getObjectLocation());
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112 } else if (location instanceof ObjectFieldLocation) {
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113 return ((ObjectFieldLocation) location).getIndex();
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114 } else if (location instanceof SimpleObjectFieldLocation) {
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115 return ((SimpleObjectFieldLocation) location).getIndex();
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116 } else {
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117 return 0;
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118 }
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119 }
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120 }