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annotate graal/com.oracle.graal.hotspot/src/com/oracle/graal/hotspot/meta/HotSpotResolvedJavaFieldImpl.java @ 18465:f0a8b72315c1

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Move ResolvedJavaField#read[Constant]Value and getMethodHandleAccess() to ConstantReflectionProvider
author Andreas Woess <andreas.woess@jku.at>
date Wed, 19 Nov 2014 17:00:12 +0100
parents e11768d6136e
children c2b45b536677
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1 /*
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2 * Copyright (c) 2011, 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 static com.oracle.graal.hotspot.HotSpotGraalRuntime.*;
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26 import static com.oracle.graal.hotspot.meta.HotSpotResolvedObjectTypeImpl.*;
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27
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28 import java.lang.annotation.*;
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29 import java.lang.reflect.*;
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30
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31 import com.oracle.graal.api.meta.*;
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32 import com.oracle.graal.hotspot.*;
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33
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34 /**
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35 * Represents a field in a HotSpot type.
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36 */
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37 public class HotSpotResolvedJavaFieldImpl extends CompilerObject implements HotSpotResolvedJavaField {
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38
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39 private static final long serialVersionUID = 7692985878836955683L;
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40 private final HotSpotResolvedObjectTypeImpl holder;
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41 private final String name;
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42 private JavaType type;
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43 private final int offset;
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44
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45 /**
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46 * This value contains all flags as stored in the VM including internal ones.
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47 */
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48 private final int modifiers;
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49
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50 public HotSpotResolvedJavaFieldImpl(HotSpotResolvedObjectTypeImpl holder, String name, JavaType type, long offset, int modifiers) {
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51 this.holder = holder;
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52 this.name = name;
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53 this.type = type;
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54 assert offset != -1;
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55 assert offset == (int) offset : "offset larger than int";
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56 this.offset = (int) offset;
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57 this.modifiers = modifiers;
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58 }
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59
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60 @Override
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61 public boolean equals(Object obj) {
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62 if (this == obj) {
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63 return true;
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64 }
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65 if (obj instanceof HotSpotResolvedJavaField) {
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66 HotSpotResolvedJavaFieldImpl that = (HotSpotResolvedJavaFieldImpl) obj;
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67 return this.holder.equals(that.holder) && this.name.equals(that.name) && this.type.equals(that.type);
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68 }
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69 return false;
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70 }
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71
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72 @Override
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73 public int hashCode() {
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74 return name.hashCode();
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75 }
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76
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77 @Override
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78 public int getModifiers() {
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79 return modifiers & getReflectionFieldModifiers();
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80 }
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81
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82 @Override
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83 public boolean isInternal() {
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84 return (modifiers & runtime().getConfig().jvmAccFieldInternal) != 0;
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85 }
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86
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87 /**
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88 * Determines if a given object contains this field.
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89 *
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90 * @return true iff this is a non-static field and its declaring class is assignable from
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91 * {@code object}'s class
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92 */
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93 public boolean isInObject(Object object) {
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94 if (isStatic()) {
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95 return false;
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96 }
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97 return getDeclaringClass().isAssignableFrom(HotSpotResolvedObjectTypeImpl.fromObjectClass(object.getClass()));
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98 }
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99
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100 @Override
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101 public HotSpotResolvedObjectTypeImpl getDeclaringClass() {
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102 return holder;
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103 }
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104
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105 @Override
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106 public String getName() {
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107 return name;
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108 }
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109
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110 @Override
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111 public JavaType getType() {
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112 if (!(type instanceof ResolvedJavaType)) {
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113 // Don't allow unresolved types to hang around forever
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114 ResolvedJavaType resolved = type.resolve(holder);
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115 if (resolved != null) {
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116 type = resolved;
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117 }
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118 }
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119 return type;
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120 }
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121
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122 public int offset() {
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123 return offset;
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124 }
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125
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126 @Override
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127 public String toString() {
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128 return format("HotSpotField<%H.%n %t:") + offset + ">";
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129 }
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130
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131 @Override
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132 public boolean isSynthetic() {
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133 return (runtime().getConfig().syntheticFlag & modifiers) != 0;
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134 }
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135
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136 /**
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137 * Checks if this field has the {@link Stable} annotation.
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138 *
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139 * @return true if field has {@link Stable} annotation, false otherwise
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140 */
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141 public boolean isStable() {
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Tom Rodriguez <tom.rodriguez@oracle.com>
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142 if ((runtime().getConfig().jvmAccFieldStable & modifiers) != 0) {
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143 return true;
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Tom Rodriguez <tom.rodriguez@oracle.com>
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144 }
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Tom Rodriguez <tom.rodriguez@oracle.com>
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145 assert getAnnotation(Stable.class) == null;
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Tom Rodriguez <tom.rodriguez@oracle.com>
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146 return false;
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147 }
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148
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Doug Simon <doug.simon@oracle.com>
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149 @Override
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
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150 public <T extends Annotation> T getAnnotation(Class<T> annotationClass) {
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151 Field javaField = toJava();
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152 if (javaField != null) {
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153 return javaField.getAnnotation(annotationClass);
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154 }
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155 return null;
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156 }
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157
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158 private Field toJava() {
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Doug Simon <doug.simon@oracle.com>
parents: 13818
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159 if (isInternal()) {
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160 return null;
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161 }
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
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162 try {
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Doug Simon <doug.simon@oracle.com>
parents: 6950
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163 return holder.mirror().getDeclaredField(name);
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164 } catch (NoSuchFieldException e) {
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165 return null;
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166 }
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
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167 }
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168 }