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annotate graal/com.oracle.graal.hotspot/src/com/oracle/graal/hotspot/meta/HotSpotSignature.java @ 9657:4c162e218809

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enabled creation of a HotSpotSignature from types (in addition to a string)
author Doug Simon <doug.simon@oracle.com>
date Mon, 13 May 2013 13:50:46 +0200
parents 261a43921c5e
children 7080a96be216
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rev   line source
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1 /*
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2 * Copyright (c) 2011, 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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8872bc0eebdf Renaming hotspot.ri => hotspot.meta.
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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
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27 import java.util.*;
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28
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29 import com.oracle.graal.api.meta.*;
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30 import com.oracle.graal.graph.*;
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31 import com.oracle.graal.hotspot.*;
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32 import com.oracle.graal.java.*;
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34 /**
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35 * Represents a method signature.
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36 */
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37 public class HotSpotSignature extends CompilerObject implements Signature {
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38
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39 private static final long serialVersionUID = -2890917956072366116L;
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40 private final List<String> parameters = new ArrayList<>();
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41 private final String returnType;
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42 private final String originalString;
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43 private JavaType[] parameterTypes;
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44 private JavaType returnTypeCache;
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45
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46 public HotSpotSignature(String signature) {
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47 assert signature.length() > 0;
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48 this.originalString = signature;
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49
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50 if (signature.charAt(0) == '(') {
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51 int cur = 1;
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52 while (cur < signature.length() && signature.charAt(cur) != ')') {
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53 int nextCur = parseSignature(signature, cur);
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54 parameters.add(signature.substring(cur, nextCur));
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55 cur = nextCur;
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56 }
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57
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58 cur++;
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59 int nextCur = parseSignature(signature, cur);
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60 returnType = signature.substring(cur, nextCur);
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61 assert nextCur == signature.length();
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62 } else {
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63 returnType = null;
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64 }
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65 }
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66
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67 public HotSpotSignature(JavaType returnType, JavaType... parameterTypes) {
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68 this.parameterTypes = parameterTypes.clone();
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69 this.returnTypeCache = returnType;
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70 this.returnType = returnType.getName();
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71 StringBuilder sb = new StringBuilder("(");
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72 for (JavaType type : parameterTypes) {
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73 parameters.add(type.getName());
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74 sb.append(type.getName());
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75 }
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76 sb.append(")").append(returnType.getName());
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77 this.originalString = sb.toString();
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78 assert new HotSpotSignature(originalString).equals(this);
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79 }
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80
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81 private static int parseSignature(String signature, int start) {
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82 int cur = start;
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83 char first;
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84 do {
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85 first = signature.charAt(cur++);
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86 } while (first == '[');
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87
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88 switch (first) {
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89 case 'L':
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90 while (signature.charAt(cur) != ';') {
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91 cur++;
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92 }
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93 cur++;
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94 break;
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95 case 'V':
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96 case 'I':
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97 case 'B':
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98 case 'C':
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99 case 'D':
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100 case 'F':
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101 case 'J':
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102 case 'S':
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103 case 'Z':
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104 break;
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105 default:
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106 throw new GraalInternalError("Invalid character at index " + cur + " in signature: " + signature);
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107 }
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108 return cur;
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109 }
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110
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111 @Override
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112 public int getParameterCount(boolean withReceiver) {
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113 return parameters.size() + (withReceiver ? 1 : 0);
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114 }
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115
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116 @Override
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117 public Kind getParameterKind(int index) {
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118 return Kind.fromTypeString(parameters.get(index));
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119 }
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120
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121 @Override
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122 public int getParameterSlots(boolean withReceiver) {
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123 int argSlots = 0;
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124 for (int i = 0; i < getParameterCount(false); i++) {
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125 argSlots += FrameStateBuilder.stackSlots(getParameterKind(i));
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126 }
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127 return argSlots + (withReceiver ? 1 : 0);
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128 }
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129
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130 @Override
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131 public JavaType getParameterType(int index, ResolvedJavaType accessingClass) {
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132 if (parameterTypes == null) {
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133 parameterTypes = new JavaType[parameters.size()];
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134 }
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135 JavaType type = parameterTypes[index];
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b4c406861c33 More renamings to drop Ri* prefix completely. Deleted graph.BitMap class and replaced with java.util.BitSet.
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136 if (type == null || !(type instanceof ResolvedJavaType)) {
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137 type = graalRuntime().lookupType(parameters.get(index), (HotSpotResolvedObjectType) accessingClass, false);
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138 parameterTypes[index] = type;
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139 }
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140 return type;
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141 }
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142
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143 public String getMethodDescriptor() {
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144 assert originalString.equals(MetaUtil.signatureToMethodDescriptor(this));
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145 return originalString;
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146 }
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147
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148 @Override
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2463eb24b644 Cleanup of Graal API: Rename methods so that it follows the getXxx naming convention and so that they are similar to the names of the java.lang.reflect classes. Remove unused methods.
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149 public Kind getReturnKind() {
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150 return Kind.fromTypeString(returnType);
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151 }
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152
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153 @Override
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154 public JavaType getReturnType(ResolvedJavaType accessingClass) {
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fdcdbc3dd76c HotSpotSignature.getParameterType should not try eager resolving.
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155 if (returnTypeCache == null || !(returnTypeCache instanceof ResolvedJavaType)) {
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156 returnTypeCache = graalRuntime().lookupType(returnType, (HotSpotResolvedObjectType) accessingClass, false);
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157 }
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158 return returnTypeCache;
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159 }
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160
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161 @Override
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162 public String toString() {
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163 return "HotSpotSignature<" + originalString + ">";
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164 }
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165
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166 @Override
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167 public boolean equals(Object obj) {
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168 if (obj instanceof HotSpotSignature) {
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169 HotSpotSignature other = (HotSpotSignature) obj;
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170 if (other.originalString.equals(originalString)) {
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171 assert other.parameters.equals(parameters);
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172 assert other.returnType.equals(returnType);
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173 return true;
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174 }
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175 }
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176 return false;
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177 }
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178
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179 @Override
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180 public int hashCode() {
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181 return originalString.hashCode();
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182 }
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183 }