Mercurial > hg > Members > kono > jpf-core

annotate src/main/gov/nasa/jpf/util/json/JSONObject.java @ 23:db918c531e6d

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streamlined class init, which was a mixed case of registerClass()/initializeClass() and pushRequiredClinits(). Now it is a single initializeClass(ti) method which combines the previous initializeClass(), pushRequiredClinits() and pushClinit() methods. The reason for combining these is the forthcoming replacement of separately locked clinits from different DirectCallStackFrames with a single synthetic frame that calls clinits from nested synchronized blocks. This is required to model hotspot, which does cause deadlocks with concurrent init of classes that cause subclass init during their clinit executions.
author Peter Mehlitz <Peter.C.Mehlitz@nasa.gov>
date Wed, 15 Apr 2015 22:40:21 -0700
parents 61d41facf527
children 6774e2e08d37
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1 /*
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2 * Copyright (C) 2014, United States Government, as represented by the
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3 * Administrator of the National Aeronautics and Space Administration.
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4 * All rights reserved.
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5 *
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6 * The Java Pathfinder core (jpf-core) platform is licensed under the
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7 * Apache License, Version 2.0 (the "License"); you may not use this file except
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8 * in compliance with the License. You may obtain a copy of the License at
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9 *
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10 * http://www.apache.org/licenses/LICENSE-2.0.
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11 *
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12 * Unless required by applicable law or agreed to in writing, software
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13 * distributed under the License is distributed on an "AS IS" BASIS,
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14 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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15 * See the License for the specific language governing permissions and
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16 * limitations under the License.
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17 */
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18
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19 package gov.nasa.jpf.util.json;
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20
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21 import gov.nasa.jpf.JPF;
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22 import gov.nasa.jpf.JPFException;
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23 import gov.nasa.jpf.util.JPFLogger;
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24 import gov.nasa.jpf.util.ObjectConverter;
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25 import gov.nasa.jpf.vm.ChoiceGenerator;
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26 import gov.nasa.jpf.vm.ClassInfo;
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27 import gov.nasa.jpf.vm.ClinitRequired;
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28 import gov.nasa.jpf.vm.ElementInfo;
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29 import gov.nasa.jpf.vm.FieldInfo;
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30 import gov.nasa.jpf.vm.Fields;
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31 import gov.nasa.jpf.vm.MJIEnv;
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32 import gov.nasa.jpf.vm.ThreadInfo;
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33
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34 import java.util.HashMap;
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35 import java.util.Set;
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36
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37 /**
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38 * Object parsed from JSON document.
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39 * @author Ivan Mushketik
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40 */
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41 public class JSONObject{
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42
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43 private static final JPFLogger logger = JPF.getLogger("gov.nasa.jpf.util.json.JSONObject");
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44
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45 private HashMap<String, Value> keyValues = new HashMap<String, Value>();
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46 private HashMap<String, CGCall> cgCalls = new HashMap<String, CGCall>();
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47
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48 void addValue(String key, Value value) {
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49 if (keyValues.containsKey(key)) {
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50 throw new JPFException("Attempt to add two nodes with the same key in JSON object");
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51 }
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52
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53 keyValues.put(key, value);
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54 }
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55
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56 /**
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57 * Get value read from JSON document with specified key.
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58 * @param key - value's key.
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59 * @return read value.
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60 */
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61 public Value getValue(String key) {
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62 return keyValues.get(key);
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63 }
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64
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65 public String[] getValuesKeys() {
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66 Set<String> valuesKeys = keyValues.keySet();
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67 String[] result = new String[keyValues.size()];
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68
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69 valuesKeys.toArray(result);
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70 return result;
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71 }
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72
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73 public void addCGCall(String key, CGCall cgCall) {
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74 if (cgCalls.containsKey(key)) {
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75 throw new JPFException("Attempt to add two CG with the same key in JSON object");
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76 }
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77
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78 cgCalls.put(key, cgCall);
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79 }
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80
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81 public CGCall getCGCall(String key) {
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82 return cgCalls.get(key);
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83 }
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84
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85 public String[] getCGCallsKeys() {
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86 Set<String> cgKeys = cgCalls.keySet();
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87 String[] result = new String[cgKeys.size()];
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88
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89 cgKeys.toArray(result);
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90 return result;
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91 }
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92
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93 /**
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94 * check if all required ClassInfos for this object have been initialized so
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95 * that the caller can decide if it has to re-execute before proceeding
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96 *
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97 * NOTE - this currently does not support concrete field types that are subtypes
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98 * of the respective field types
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99 */
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100 public boolean requiresClinitExecution (ClassInfo ci, ThreadInfo ti){
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101 while (ci != null){
23
db918c531e6d streamlined class init, which was a mixed case of registerClass()/initializeClass() and pushRequiredClinits(). Now it is a single initializeClass(ti) method which combines the previous initializeClass(), pushRequiredClinits() and pushClinit() methods. The reason for combining these is the forthcoming replacement of separately locked clinits from different DirectCallStackFrames with a single synthetic frame that calls clinits from nested synchronized blocks. This is required to model hotspot, which does cause deadlocks with concurrent init of classes that cause subclass init during their clinit executions.
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102 if (ci.initializeClass(ti)){
0
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103 return true;
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104 }
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105
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106 for (FieldInfo fi : ci.getDeclaredInstanceFields()) {
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107 ClassInfo ciField = fi.getTypeClassInfo();
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108 if (requiresClinitExecution(ciField, ti)){
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109 return true;
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110 }
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111 }
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112
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113 ci = ci.getSuperClass();
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114 }
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115
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116 return false;
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117 }
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118
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119 //--- the fillers
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120
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121 // NOTE - (pcm) before calling this method you have to make sure all required
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122 // types are initialized
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123
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124 public int fillObject (MJIEnv env, ClassInfo ci, ChoiceGenerator<?>[] cgs, String prefix) throws ClinitRequired {
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125 int newObjRef = env.newObject(ci);
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126 ElementInfo ei = env.getHeap().getModifiable(newObjRef);
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127
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128 // Fill all fields for this class until it has a super class
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129 while (ci != null) {
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130 FieldInfo[] fields = ci.getDeclaredInstanceFields();
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131
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132 for (FieldInfo fi : fields) {
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133 String fieldName = fi.getName();
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134 Value val = getValue(fieldName);
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135 CGCall cgCall = getCGCall(fieldName);
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136
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137 // If a value was defined in JSON document
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138 if (val != null) {
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139 fillFromValue(fi, ei, val, env, cgs, prefix);
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140
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141 } else if (cgCall != null) {
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142 // Value of this field should be taken from CG
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143 String cgId = prefix + fieldName;
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144 ChoiceGenerator<?> cg = getCGByID(cgs, cgId);
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145 assert cg != null : "Expected CG with id " + cgId;
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146
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147 Object cgResult = cg.getNextChoice();
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148
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149 if (!fi.isReference()) {
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150 convertPrimititve(ei, fi, cgResult);
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151 } else {
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152 int newFieldRef = ObjectConverter.JPFObjectFromJavaObject(env, cgResult);
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153 ei.setReferenceField(fi, newFieldRef);
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154 }
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155 } else {
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156 logger.warning("Value for field ", fi.getFullName(), " isn't specified");
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157 }
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158 }
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159
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160 ci = ci.getSuperClass();
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161 }
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162
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163 return newObjRef;
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164 }
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165
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166 private void fillFromValue(FieldInfo fi, ElementInfo ei, Value val, MJIEnv env, ChoiceGenerator<?>[] cgs, String prefix) {
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167 String fieldName = fi.getName();
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168 // Handle primitive types
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169 if (!fi.isReference()) {
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170 fillPrimitive(ei, fi, val);
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171
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172 } else {
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173 if (isArrayType(fi.getType())) {
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174 int newArrRef = createArray(env, fi.getTypeClassInfo(), val, cgs, prefix + fieldName);
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175 ei.setReferenceField(fi, newArrRef);
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176
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177 } else {
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178 Creator creator = CreatorsFactory.getCreator(fi.getType());
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179 if (creator != null) {
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180 int newSubObjRef = creator.create(env, fi.getType(), val);
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181 ei.setReferenceField(fi, newSubObjRef);
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182
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183 } else {
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184 // Not a special case. Fill it recursively
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185 ClassInfo ciField = fi.getTypeClassInfo();
23
db918c531e6d streamlined class init, which was a mixed case of registerClass()/initializeClass() and pushRequiredClinits(). Now it is a single initializeClass(ti) method which combines the previous initializeClass(), pushRequiredClinits() and pushClinit() methods. The reason for combining these is the forthcoming replacement of separately locked clinits from different DirectCallStackFrames with a single synthetic frame that calls clinits from nested synchronized blocks. This is required to model hotspot, which does cause deadlocks with concurrent init of classes that cause subclass init during their clinit executions.
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diff changeset
186 if (ciField.initializeClass(env.getThreadInfo())){
0
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187 throw new ClinitRequired(ciField);
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188 }
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189
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diff changeset
190 JSONObject jsonObj = val.getObject();
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diff changeset
191 int fieldRef = MJIEnv.NULL;
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diff changeset
192 if (jsonObj != null) {
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193 fieldRef = jsonObj.fillObject(env, ciField, cgs, prefix + fieldName);
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194 }
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195 ei.setReferenceField(fi.getName(), fieldRef);
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196 }
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197 }
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198 }
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199 }
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200
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diff changeset
201
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diff changeset
202 private static void fillPrimitive(ElementInfo ei, FieldInfo fi, Value val) {
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203 String primitiveName = fi.getType();
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204
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205 if (primitiveName.equals("boolean")) {
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diff changeset
206 ei.setBooleanField(fi, val.getBoolean());
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207
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208 } else if (primitiveName.equals("byte")) {
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diff changeset
209 ei.setByteField(fi, val.getDouble().byteValue());
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210
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211 } else if (primitiveName.equals("short")) {
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diff changeset
212 ei.setShortField(fi, val.getDouble().shortValue());
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213
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214 } else if (primitiveName.equals("int")) {
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diff changeset
215 ei.setIntField(fi, val.getDouble().intValue());
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diff changeset
216
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diff changeset
217 } else if (primitiveName.equals("long")) {
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diff changeset
218 ei.setLongField(fi, val.getDouble().longValue());
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diff changeset
219
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diff changeset
220 } else if (primitiveName.equals("float")) {
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diff changeset
221 ei.setFloatField(fi, val.getDouble().floatValue());
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diff changeset
222
61d41facf527 initial v8 import (history reset)
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diff changeset
223 } else if (primitiveName.equals("double")) {
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diff changeset
224 ei.setDoubleField(fi, val.getDouble());
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diff changeset
225 }
61d41facf527 initial v8 import (history reset)
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diff changeset
226 }
61d41facf527 initial v8 import (history reset)
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diff changeset
227
61d41facf527 initial v8 import (history reset)
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parents:
diff changeset
228 public int createArray(MJIEnv env, ClassInfo ciArray, Value value, ChoiceGenerator<?>[] cgs, String prefix) {
61d41facf527 initial v8 import (history reset)
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diff changeset
229 Value vals[] = value.getArray();
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diff changeset
230
61d41facf527 initial v8 import (history reset)
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diff changeset
231 ClassInfo ciElement = ciArray.getComponentClassInfo();
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diff changeset
232 String arrayElementType = ciElement.getName();
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diff changeset
233 int arrayRef;
61d41facf527 initial v8 import (history reset)
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parents:
diff changeset
234
61d41facf527 initial v8 import (history reset)
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parents:
diff changeset
235 // Handle arrays of primitive types
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parents:
diff changeset
236 if (arrayElementType.equals("boolean")) {
61d41facf527 initial v8 import (history reset)
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parents:
diff changeset
237 arrayRef = env.newBooleanArray(vals.length);
61d41facf527 initial v8 import (history reset)
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parents:
diff changeset
238 ElementInfo arrayEI = env.getHeap().getModifiable(arrayRef);
61d41facf527 initial v8 import (history reset)
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parents:
diff changeset
239 boolean bools[] = arrayEI.asBooleanArray();
61d41facf527 initial v8 import (history reset)
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diff changeset
240
61d41facf527 initial v8 import (history reset)
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parents:
diff changeset
241 for (int i = 0; i < vals.length; i++) {
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diff changeset
242 bools[i] = vals[i].getBoolean();
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parents:
diff changeset
243 }
61d41facf527 initial v8 import (history reset)
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parents:
diff changeset
244 } else if (arrayElementType.equals("byte")) {
61d41facf527 initial v8 import (history reset)
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diff changeset
245 arrayRef = env.newByteArray(vals.length);
61d41facf527 initial v8 import (history reset)
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parents:
diff changeset
246 ElementInfo arrayEI = env.getHeap().getModifiable(arrayRef);
61d41facf527 initial v8 import (history reset)
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parents:
diff changeset
247 byte bytes[] = arrayEI.asByteArray();
61d41facf527 initial v8 import (history reset)
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parents:
diff changeset
248
61d41facf527 initial v8 import (history reset)
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diff changeset
249 for (int i = 0; i < vals.length; i++) {
61d41facf527 initial v8 import (history reset)
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diff changeset
250 bytes[i] = vals[i].getDouble().byteValue();
61d41facf527 initial v8 import (history reset)
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parents:
diff changeset
251 }
61d41facf527 initial v8 import (history reset)
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parents:
diff changeset
252 } else if (arrayElementType.equals("short")) {
61d41facf527 initial v8 import (history reset)
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parents:
diff changeset
253 arrayRef = env.newShortArray(vals.length);
61d41facf527 initial v8 import (history reset)
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parents:
diff changeset
254 ElementInfo arrayEI = env.getHeap().getModifiable(arrayRef);
61d41facf527 initial v8 import (history reset)
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parents:
diff changeset
255 short shorts[] = arrayEI.asShortArray();
61d41facf527 initial v8 import (history reset)
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parents:
diff changeset
256
61d41facf527 initial v8 import (history reset)
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parents:
diff changeset
257 for (int i = 0; i < vals.length; i++) {
61d41facf527 initial v8 import (history reset)
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diff changeset
258 shorts[i] = vals[i].getDouble().shortValue();
61d41facf527 initial v8 import (history reset)
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parents:
diff changeset
259 }
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parents:
diff changeset
260 } else if (arrayElementType.equals("int")) {
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parents:
diff changeset
261 arrayRef = env.newIntArray(vals.length);
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parents:
diff changeset
262 ElementInfo arrayEI = env.getHeap().getModifiable(arrayRef);
61d41facf527 initial v8 import (history reset)
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parents:
diff changeset
263 int[] ints = arrayEI.asIntArray();
61d41facf527 initial v8 import (history reset)
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parents:
diff changeset
264
61d41facf527 initial v8 import (history reset)
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diff changeset
265 for (int i = 0; i < vals.length; i++) {
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diff changeset
266 ints[i] = vals[i].getDouble().intValue();
61d41facf527 initial v8 import (history reset)
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diff changeset
267 }
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parents:
diff changeset
268 } else if (arrayElementType.equals("long")) {
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diff changeset
269 arrayRef = env.newLongArray(vals.length);
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diff changeset
270 ElementInfo arrayEI = env.getHeap().getModifiable(arrayRef);
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diff changeset
271 long[] longs = arrayEI.asLongArray();
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diff changeset
272
61d41facf527 initial v8 import (history reset)
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diff changeset
273 for (int i = 0; i < vals.length; i++) {
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diff changeset
274 longs[i] = vals[i].getDouble().longValue();
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diff changeset
275 }
61d41facf527 initial v8 import (history reset)
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parents:
diff changeset
276 } else if (arrayElementType.equals("float")) {
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diff changeset
277 arrayRef = env.newFloatArray(vals.length);
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parents:
diff changeset
278 ElementInfo arrayEI = env.getHeap().getModifiable(arrayRef);
61d41facf527 initial v8 import (history reset)
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diff changeset
279 float[] floats = arrayEI.asFloatArray();
61d41facf527 initial v8 import (history reset)
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parents:
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280
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281 for (int i = 0; i < vals.length; i++) {
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282 floats[i] = vals[i].getDouble().floatValue();
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283 }
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284 } else if (arrayElementType.equals("double")) {
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285 arrayRef = env.newDoubleArray(vals.length);
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286 ElementInfo arrayEI = env.getHeap().getModifiable(arrayRef);
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287 double[] doubles = arrayEI.asDoubleArray();
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288
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289 for (int i = 0; i < vals.length; i++) {
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290 doubles[i] = vals[i].getDouble();
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291 }
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292 } else {
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293 // Not an array of primitive types
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294 arrayRef = env.newObjectArray(arrayElementType, vals.length);
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295 ElementInfo arrayEI = env.getModifiableElementInfo(arrayRef);
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296
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297 Fields fields = arrayEI.getFields();
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298
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299 Creator creator = CreatorsFactory.getCreator(arrayElementType);
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300 for (int i = 0; i < vals.length; i++) {
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301
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302 int newObjRef;
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303 if (creator != null) {
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304 newObjRef = creator.create(env, arrayElementType, vals[i]);
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305 } else{
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306 if (isArrayType(arrayElementType)) {
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307 newObjRef = createArray(env, ciElement, vals[i], cgs, prefix + "[" + i);
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308 } else {
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309 JSONObject jsonObj = vals[i].getObject();
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310 if (jsonObj != null) {
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311 newObjRef = jsonObj.fillObject(env, ciElement, cgs, prefix + "[" + i);
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312 } else {
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313 newObjRef = MJIEnv.NULL;
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314 }
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315 }
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316 }
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317
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318 fields.setReferenceValue(i, newObjRef);
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319 }
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320 }
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321
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322 return arrayRef;
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323 }
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324
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325
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326 private boolean isArrayType(String typeName) {
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327 return typeName.lastIndexOf('[') >= 0;
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328 }
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329
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330 /**
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331 * This is method is used to set field of primitive type from CG result object
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332 * @param ei - ElementInfo to set field in
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333 * @param fi - FieldInfo of a field we want to set
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334 * @param cgResult - result of CG call
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335 */
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336 private void convertPrimititve(ElementInfo ei, FieldInfo fi, Object cgResult) {
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337 String primitiveName = fi.getType();
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338
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339 if (primitiveName.equals("boolean") && cgResult instanceof Boolean) {
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340 Boolean bool = (Boolean) cgResult;
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341 ei.setBooleanField(fi, bool.booleanValue());
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342 } else if (cgResult instanceof Number) {
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343 Number number = (Number) cgResult;
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344
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345 if (primitiveName.equals("byte")) {
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346 ei.setByteField(fi, number.byteValue());
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347
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348 } else if (primitiveName.equals("short")) {
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349 ei.setShortField(fi, number.shortValue());
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350
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351 } else if (primitiveName.equals("int")) {
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352 ei.setIntField(fi, number.intValue());
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353
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354 } else if (primitiveName.equals("long")) {
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355 ei.setLongField(fi, number.longValue());
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356
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357 } else if (primitiveName.equals("float")) {
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358 ei.setFloatField(fi, number.floatValue());
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359
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360 } else if (primitiveName.equals("double")) {
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361 ei.setDoubleField(fi, number.doubleValue());
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362 }
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363 } else if (cgResult instanceof Character) {
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364 Character c = (Character) cgResult;
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365 ei.setCharField(fi, c);
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366
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367 } else {
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parents:
diff changeset
368 throw new JPFException("Can't convert " + cgResult.getClass().getCanonicalName() +
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369 " to " + primitiveName);
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diff changeset
370 }
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371 }
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diff changeset
372
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diff changeset
373 /**
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diff changeset
374 * Get CG from current state CG list by it's ID
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diff changeset
375 * @param cgs - array of CG from current state
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diff changeset
376 * @param id - id of the CG that we search for
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diff changeset
377 * @return - CG with a specified id or null if no id with such name found
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parents:
diff changeset
378 */
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diff changeset
379 private ChoiceGenerator<?> getCGByID(ChoiceGenerator<?>[] cgs, String id) {
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diff changeset
380 if (cgs == null) {
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diff changeset
381 return null;
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parents:
diff changeset
382 }
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parents:
diff changeset
383
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parents:
diff changeset
384 for (int i = 0; i < cgs.length; i++) {
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diff changeset
385 if (cgs[i].getId().equals(id)) {
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parents:
diff changeset
386 return cgs[i];
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parents:
diff changeset
387 }
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parents:
diff changeset
388 }
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parents:
diff changeset
389
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parents:
diff changeset
390 return null;
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parents:
diff changeset
391 }
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parents:
diff changeset
392 }