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annotate graal/com.oracle.graal.hotspot/src/com/oracle/graal/hotspot/meta/HotSpotObjectConstantImpl.java @ 18285:420161aee840

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added HotSpotObjectConstant.getSuperclass()
author Doug Simon <doug.simon@oracle.com>
date Thu, 06 Nov 2014 13:48:01 +0100
parents 29ba2a7cdfcb
children ffcbc50063a3
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
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1 /*
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2 * Copyright (c) 2009, 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.graal.hotspot.meta;
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24
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25 import com.oracle.graal.api.meta.*;
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26 import com.oracle.graal.graph.*;
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27
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28 /**
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29 * Represents a constant non-{@code null} object reference, within the compiler and across the
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30 * compiler/runtime interface.
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31 */
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32 public final class HotSpotObjectConstantImpl extends JavaConstant implements HotSpotObjectConstant {
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33
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34 private static final long serialVersionUID = 3592151693708093496L;
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35
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36 public static JavaConstant forObject(Object object) {
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37 if (object == null) {
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38 return JavaConstant.NULL_OBJECT;
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39 } else {
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40 return new HotSpotObjectConstantImpl(object, false);
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41 }
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42 }
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43
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44 public static JavaConstant forBoxedValue(Kind kind, Object value) {
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45 if (kind == Kind.Object) {
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46 return HotSpotObjectConstantImpl.forObject(value);
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47 } else {
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48 return JavaConstant.forBoxedPrimitive(value);
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49 }
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50 }
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51
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52 public static Object asObject(Constant constant) {
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53 if (JavaConstant.isNull(constant)) {
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54 return null;
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55 } else {
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56 return ((HotSpotObjectConstantImpl) constant).object;
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57 }
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58 }
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59
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60 public static Object asBoxedValue(Constant constant) {
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61 if (JavaConstant.isNull(constant)) {
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62 return null;
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63 } else if (constant instanceof HotSpotObjectConstantImpl) {
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64 return ((HotSpotObjectConstantImpl) constant).object;
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65 } else {
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66 return ((JavaConstant) constant).asBoxedPrimitive();
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67 }
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68 }
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69
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70 public static boolean isCompressed(Constant constant) {
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71 if (JavaConstant.isNull(constant)) {
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72 return HotSpotCompressedNullConstant.NULL_OBJECT.equals(constant);
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73 } else {
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74 return ((HotSpotObjectConstantImpl) constant).compressed;
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75 }
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76 }
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77
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78 private final Object object;
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79 private final boolean compressed;
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80
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81 private HotSpotObjectConstantImpl(Object object, boolean compressed) {
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82 super(LIRKind.reference(compressed ? Kind.Int : Kind.Object));
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83 this.object = object;
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84 this.compressed = compressed;
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85 assert object != null;
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86 }
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87
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88 public JavaConstant compress() {
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89 assert !compressed;
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90 return new HotSpotObjectConstantImpl(object, true);
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91 }
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92
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93 public JavaConstant uncompress() {
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94 assert compressed;
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95 return new HotSpotObjectConstantImpl(object, false);
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96 }
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97
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98 public JavaConstant getClassLoader() {
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99 if (object instanceof Class) {
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100 /*
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101 * This is an intrinsic for getClassLoader0, which occurs after any security checks. We
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102 * can't call that directly so just call getClassLoader.
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103 */
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104 return HotSpotObjectConstantImpl.forObject(((Class<?>) object).getClassLoader());
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105 }
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106 return null;
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107 }
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108
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109 public int getIdentityHashCode() {
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110 return System.identityHashCode(object);
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111 }
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112
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113 public JavaConstant getNodeClass() {
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114 if (object instanceof Class) {
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115 return HotSpotObjectConstantImpl.forObject(NodeClass.get((Class<?>) object));
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116 }
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117 return null;
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118 }
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119
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120 public JavaConstant getComponentType() {
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121 if (object instanceof Class) {
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122 return HotSpotObjectConstantImpl.forObject(((Class<?>) object).getComponentType());
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123 }
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124 return null;
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125 }
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126
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127 public JavaConstant getSuperclass() {
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128 if (object instanceof Class) {
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129 return HotSpotObjectConstantImpl.forObject(((Class<?>) object).getSuperclass());
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130 }
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131 return null;
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132 }
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133
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134 @Override
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135 public boolean isNull() {
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136 return false;
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137 }
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Christian Wimmer <christian.wimmer@oracle.com>
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138
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Christian Wimmer <christian.wimmer@oracle.com>
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139 @Override
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Christian Wimmer <christian.wimmer@oracle.com>
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140 public boolean isDefaultForKind() {
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Christian Wimmer <christian.wimmer@oracle.com>
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141 return false;
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142 }
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Christian Wimmer <christian.wimmer@oracle.com>
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143
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Christian Wimmer <christian.wimmer@oracle.com>
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144 @Override
18186
ef357effbda7 Backout of changeset 9a804ec7f707 (converted Constant and Value to be interfaces).
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145 public Object asBoxedPrimitive() {
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146 throw new IllegalArgumentException();
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147 }
ef357effbda7 Backout of changeset 9a804ec7f707 (converted Constant and Value to be interfaces).
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parents: 18176
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148
ef357effbda7 Backout of changeset 9a804ec7f707 (converted Constant and Value to be interfaces).
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149 @Override
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150 public int asInt() {
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151 throw new IllegalArgumentException();
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152 }
ef357effbda7 Backout of changeset 9a804ec7f707 (converted Constant and Value to be interfaces).
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parents: 18176
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153
ef357effbda7 Backout of changeset 9a804ec7f707 (converted Constant and Value to be interfaces).
Roland Schatz <roland.schatz@oracle.com>
parents: 18176
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154 @Override
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Roland Schatz <roland.schatz@oracle.com>
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155 public boolean asBoolean() {
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156 throw new IllegalArgumentException();
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parents: 18176
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157 }
ef357effbda7 Backout of changeset 9a804ec7f707 (converted Constant and Value to be interfaces).
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parents: 18176
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158
ef357effbda7 Backout of changeset 9a804ec7f707 (converted Constant and Value to be interfaces).
Roland Schatz <roland.schatz@oracle.com>
parents: 18176
diff changeset
159 @Override
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Roland Schatz <roland.schatz@oracle.com>
parents: 18176
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160 public long asLong() {
ef357effbda7 Backout of changeset 9a804ec7f707 (converted Constant and Value to be interfaces).
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parents: 18176
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161 throw new IllegalArgumentException();
ef357effbda7 Backout of changeset 9a804ec7f707 (converted Constant and Value to be interfaces).
Roland Schatz <roland.schatz@oracle.com>
parents: 18176
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162 }
ef357effbda7 Backout of changeset 9a804ec7f707 (converted Constant and Value to be interfaces).
Roland Schatz <roland.schatz@oracle.com>
parents: 18176
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163
ef357effbda7 Backout of changeset 9a804ec7f707 (converted Constant and Value to be interfaces).
Roland Schatz <roland.schatz@oracle.com>
parents: 18176
diff changeset
164 @Override
ef357effbda7 Backout of changeset 9a804ec7f707 (converted Constant and Value to be interfaces).
Roland Schatz <roland.schatz@oracle.com>
parents: 18176
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165 public float asFloat() {
ef357effbda7 Backout of changeset 9a804ec7f707 (converted Constant and Value to be interfaces).
Roland Schatz <roland.schatz@oracle.com>
parents: 18176
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166 throw new IllegalArgumentException();
ef357effbda7 Backout of changeset 9a804ec7f707 (converted Constant and Value to be interfaces).
Roland Schatz <roland.schatz@oracle.com>
parents: 18176
diff changeset
167 }
ef357effbda7 Backout of changeset 9a804ec7f707 (converted Constant and Value to be interfaces).
Roland Schatz <roland.schatz@oracle.com>
parents: 18176
diff changeset
168
ef357effbda7 Backout of changeset 9a804ec7f707 (converted Constant and Value to be interfaces).
Roland Schatz <roland.schatz@oracle.com>
parents: 18176
diff changeset
169 @Override
ef357effbda7 Backout of changeset 9a804ec7f707 (converted Constant and Value to be interfaces).
Roland Schatz <roland.schatz@oracle.com>
parents: 18176
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170 public double asDouble() {
ef357effbda7 Backout of changeset 9a804ec7f707 (converted Constant and Value to be interfaces).
Roland Schatz <roland.schatz@oracle.com>
parents: 18176
diff changeset
171 throw new IllegalArgumentException();
ef357effbda7 Backout of changeset 9a804ec7f707 (converted Constant and Value to be interfaces).
Roland Schatz <roland.schatz@oracle.com>
parents: 18176
diff changeset
172 }
ef357effbda7 Backout of changeset 9a804ec7f707 (converted Constant and Value to be interfaces).
Roland Schatz <roland.schatz@oracle.com>
parents: 18176
diff changeset
173
ef357effbda7 Backout of changeset 9a804ec7f707 (converted Constant and Value to be interfaces).
Roland Schatz <roland.schatz@oracle.com>
parents: 18176
diff changeset
174 @Override
15018
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Christian Wimmer <christian.wimmer@oracle.com>
parents:
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175 public int hashCode() {
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Christian Wimmer <christian.wimmer@oracle.com>
parents:
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176 return System.identityHashCode(object);
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Christian Wimmer <christian.wimmer@oracle.com>
parents:
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177 }
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Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
178
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Christian Wimmer <christian.wimmer@oracle.com>
parents:
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179 @Override
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Christian Wimmer <christian.wimmer@oracle.com>
parents:
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180 public boolean equals(Object o) {
18262
f7d45e2426d4 converted HotSpotObjectConstant to an interface
Doug Simon <doug.simon@oracle.com>
parents: 18188
diff changeset
181 return o == this || (o instanceof HotSpotObjectConstantImpl && super.equals(o) && object == ((HotSpotObjectConstantImpl) o).object);
15018
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Christian Wimmer <christian.wimmer@oracle.com>
parents:
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182 }
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Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
183
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Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
184 @Override
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Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
185 public String toValueString() {
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Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
186 if (object instanceof String) {
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Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
187 return (String) object;
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Christian Wimmer <christian.wimmer@oracle.com>
parents:
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188 } else {
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Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
189 return Kind.Object.format(object);
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Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
190 }
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Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
191 }
db4254246f9a Remove Constant.forObject and Constant.asObject to improve compiler/VM separation
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
192
db4254246f9a Remove Constant.forObject and Constant.asObject to improve compiler/VM separation
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
193 @Override
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Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
194 public String toString() {
15909
e43591136d9f Support for compressed constants.
Roland Schatz <roland.schatz@oracle.com>
parents: 15018
diff changeset
195 return (compressed ? "NarrowOop" : getKind().getJavaName()) + "[" + Kind.Object.format(object) + "]";
15018
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Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
196 }
db4254246f9a Remove Constant.forObject and Constant.asObject to improve compiler/VM separation
Christian Wimmer <christian.wimmer@oracle.com>
parents:
diff changeset
197 }