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1 /*
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2 * Copyright 2004-2007 Sun Microsystems, Inc. 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
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20 * CA 95054 USA or visit www.sun.com if you need additional information or
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21 * have any questions.
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22 *
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23 */
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24
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25 package sun.jvm.hotspot.utilities.soql;
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26
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27 import java.util.*;
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28 import sun.jvm.hotspot.oops.*;
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29 import sun.jvm.hotspot.runtime.*;
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30
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31 public class JSJavaField extends DefaultScriptObject {
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32 private static final int FIELD_NAME = 0;
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33 private static final int FIELD_SIGNATURE = 1;
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34 private static final int FIELD_HOLDER = 2;
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35 private static final int FIELD_IS_PRIVATE = 3;
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36 private static final int FIELD_IS_PUBLIC = 4;
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37 private static final int FIELD_IS_PROTECTED = 5;
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38 private static final int FIELD_IS_PACKAGE_PRIVATE = 6;
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39 private static final int FIELD_IS_STATIC = 7;
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40 private static final int FIELD_IS_FINAL = 8;
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41 private static final int FIELD_IS_VOLATILE = 9;
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42 private static final int FIELD_IS_TRANSIENT = 10;
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43 private static final int FIELD_IS_SYNTHETIC = 11;
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44 private static final int FIELD_UNDEFINED = -1;
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45
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46 public JSJavaField(Field f, JSJavaFactory fac) {
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47 this.field = f;
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48 this.factory = fac;
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49 }
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50
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51 public Object get(String name) {
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52 int fieldID = getFieldID(name);
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53 switch (fieldID) {
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54 case FIELD_NAME:
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55 return field.getID().getName();
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56 case FIELD_SIGNATURE:
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57 return field.getSignature().asString();
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58 case FIELD_HOLDER:
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59 return getFieldHolder();
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60 case FIELD_IS_PRIVATE:
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61 return Boolean.valueOf(field.isPrivate());
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62 case FIELD_IS_PUBLIC:
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63 return Boolean.valueOf(field.isPublic());
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64 case FIELD_IS_PROTECTED:
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65 return Boolean.valueOf(field.isProtected());
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66 case FIELD_IS_PACKAGE_PRIVATE:
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67 return Boolean.valueOf(field.isPackagePrivate());
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68 case FIELD_IS_STATIC:
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69 return Boolean.valueOf(field.isStatic());
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70 case FIELD_IS_FINAL:
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71 return Boolean.valueOf(field.isFinal());
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72 case FIELD_IS_VOLATILE:
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73 return Boolean.valueOf(field.isVolatile());
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74 case FIELD_IS_TRANSIENT:
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75 return Boolean.valueOf(field.isTransient());
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76 case FIELD_IS_SYNTHETIC:
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77 return Boolean.valueOf(field.isSynthetic());
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78 case FIELD_UNDEFINED:
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79 default:
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80 return super.get(name);
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81 }
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82 }
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83
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84 public Object[] getIds() {
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85 Object[] fieldNames = fields.keySet().toArray();
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86 Object[] superFields = super.getIds();
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87 Object[] res = new Object[fieldNames.length + superFields.length];
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88 System.arraycopy(fieldNames, 0, res, 0, fieldNames.length);
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89 System.arraycopy(superFields, 0, res, fieldNames.length, superFields.length);
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90 return res;
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91 }
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92
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93 public boolean has(String name) {
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94 if (getFieldID(name) != FIELD_UNDEFINED) {
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95 return true;
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96 } else {
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97 return super.has(name);
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98 }
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99 }
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100
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101 public void put(String name, Object value) {
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102 if (getFieldID(name) == FIELD_UNDEFINED) {
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103 super.put(name, value);
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104 }
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105 }
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106
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107 public boolean equals(Object o) {
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108 if (o == null || !(o instanceof JSJavaField)) {
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109 return false;
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110 }
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111
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112 JSJavaField other = (JSJavaField) o;
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113 return field.equals(other.field);
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114 }
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115
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116 public int hashCode() {
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117 return field.hashCode();
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118 }
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119
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120 public String toString() {
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121 StringBuffer buf = new StringBuffer();
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122 buf.append("Field ");
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123 buf.append(field.getFieldHolder().getName().asString().replace('/', '.'));
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124 buf.append('.');
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125 buf.append(field.getID().getName());
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126 return buf.toString();
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127 }
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128
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129 //-- Internals only below this point
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130 private JSJavaObject getFieldHolder() {
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131 return factory.newJSJavaKlass(field.getFieldHolder()).getJSJavaClass();
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132 }
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133
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134 private static Map fields = new HashMap();
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135 private static void addField(String name, int fieldId) {
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136 fields.put(name, new Integer(fieldId));
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137 }
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138
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139 private static int getFieldID(String name) {
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140 Integer res = (Integer) fields.get(name);
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141 return (res != null)? res.intValue() : FIELD_UNDEFINED;
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142 }
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143
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144 static {
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145 addField("name", FIELD_NAME);
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146 addField("signature", FIELD_SIGNATURE);
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147 addField("holder", FIELD_HOLDER);
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148 addField("isPrivate", FIELD_IS_PRIVATE);
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149 addField("isPublic", FIELD_IS_PUBLIC);
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150 addField("isProtected", FIELD_IS_PROTECTED);
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151 addField("isPackagePrivate", FIELD_IS_PACKAGE_PRIVATE);
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152 addField("isStatic", FIELD_IS_STATIC);
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153 addField("isFinal", FIELD_IS_FINAL);
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154 addField("isVolatile", FIELD_IS_VOLATILE);
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155 addField("isTransient", FIELD_IS_TRANSIENT);
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156 addField("isSynthetic", FIELD_IS_SYNTHETIC);
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157 }
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158
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159 private final Field field;
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160 private final JSJavaFactory factory;
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161 }
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