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annotate truffle/com.oracle.truffle.api/src/com/oracle/truffle/api/impl/Accessor.java @ 22238:cccb1ac700bd

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Team/Instrumentation: the TruflfeVM Debugger is now created eagerly at VM "build" time
author Michael Van De Vanter <michael.van.de.vanter@oracle.com>
date Tue, 22 Sep 2015 15:08:18 -0700
parents c4e7737981d3
children f78c72e2e0b6
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1 /*
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2 * Copyright (c) 2014, 2015, 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. Oracle designates this
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8 * particular file as subject to the "Classpath" exception as provided
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9 * by Oracle in the LICENSE file that accompanied this code.
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10 *
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11 * This code is distributed in the hope that it will be useful, but WITHOUT
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12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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14 * version 2 for more details (a copy is included in the LICENSE file that
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15 * accompanied this code).
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16 *
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17 * You should have received a copy of the GNU General Public License version
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18 * 2 along with this work; if not, write to the Free Software Foundation,
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19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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20 *
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21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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22 * or visit www.oracle.com if you need additional information or have any
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23 * questions.
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24 */
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25 package com.oracle.truffle.api.impl;
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26
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27 import java.io.Closeable;
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28 import java.io.IOException;
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29 import java.io.InputStream;
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30 import java.io.OutputStream;
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31 import java.lang.ref.Reference;
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32 import java.lang.ref.WeakReference;
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33
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34 import com.oracle.truffle.api.Assumption;
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35 import com.oracle.truffle.api.CallTarget;
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36 import com.oracle.truffle.api.Truffle;
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37 import com.oracle.truffle.api.TruffleLanguage;
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38 import com.oracle.truffle.api.TruffleLanguage.Env;
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39 import com.oracle.truffle.api.debug.DebugSupportProvider;
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40 import com.oracle.truffle.api.debug.Debugger;
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41 import com.oracle.truffle.api.frame.MaterializedFrame;
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42 import com.oracle.truffle.api.instrument.ASTProber;
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43 import com.oracle.truffle.api.instrument.AdvancedInstrumentResultListener;
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44 import com.oracle.truffle.api.instrument.AdvancedInstrumentRootFactory;
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45 import com.oracle.truffle.api.instrument.Instrumenter;
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46 import com.oracle.truffle.api.instrument.Probe;
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47 import com.oracle.truffle.api.instrument.ToolSupportProvider;
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48 import com.oracle.truffle.api.instrument.Visualizer;
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49 import com.oracle.truffle.api.instrument.WrapperNode;
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50 import com.oracle.truffle.api.nodes.Node;
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51 import com.oracle.truffle.api.nodes.RootNode;
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52 import com.oracle.truffle.api.source.Source;
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53
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54 /**
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55 * Communication between TruffleVM, TruffleLanguage API/SPI, and other services.
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56 */
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57 @SuppressWarnings("rawtypes")
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58 public abstract class Accessor {
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59 private static Accessor API;
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60 private static Accessor SPI;
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61 private static Accessor NODES;
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62 private static Accessor INTEROP;
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63 private static Accessor INSTRUMENT;
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64 private static Accessor DEBUG;
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65 private static final ThreadLocal<Object> CURRENT_VM = new ThreadLocal<>();
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66
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67 static {
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68 TruffleLanguage<?> lng = new TruffleLanguage<Object>() {
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69 @Override
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70 protected Object findExportedSymbol(Object context, String globalName, boolean onlyExplicit) {
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71 return null;
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72 }
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73
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74 @Override
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75 protected Object getLanguageGlobal(Object context) {
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76 return null;
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77 }
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78
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79 @Override
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80 protected boolean isObjectOfLanguage(Object object) {
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81 return false;
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82 }
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83
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84 @SuppressWarnings("deprecation")
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85 @Override
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86 protected ToolSupportProvider getToolSupport() {
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87 throw new UnsupportedOperationException();
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88 }
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89
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90 @SuppressWarnings("deprecation")
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91 @Override
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92 protected DebugSupportProvider getDebugSupport() {
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93 return null;
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94 }
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95
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96 @Override
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97 protected CallTarget parse(Source code, Node context, String... argumentNames) throws IOException {
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98 throw new IOException();
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99 }
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100
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101 @Override
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102 protected Object createContext(TruffleLanguage.Env env) {
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103 return null;
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104 }
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105
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106 @Override
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107 protected boolean isInstrumentable(Node node) {
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108 return false;
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109 }
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110
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111 @Override
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112 protected WrapperNode createWrapperNode(Node node) {
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113 return null;
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114 }
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115
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116 @Override
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117 protected ASTProber getDefaultASTProber() {
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118 return null;
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119 }
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120
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121 @Override
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122 protected Visualizer getVisualizer() {
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123 return null;
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124 }
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125
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126 @SuppressWarnings("deprecation")
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127 @Override
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128 protected void enableASTProbing(ASTProber astProber) {
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129 throw new UnsupportedOperationException();
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130 }
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131
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132 @Override
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133 protected Object evalInContext(Source source, Node node, MaterializedFrame mFrame) throws IOException {
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134 return null;
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135 }
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136
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137 @Override
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138 protected AdvancedInstrumentRootFactory createAdvancedInstrumentRootFactory(String expr, AdvancedInstrumentResultListener resultListener) throws IOException {
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139 return null;
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140 }
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141 };
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142 lng.hashCode();
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143 new Node(null) {
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144 }.getRootNode();
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145
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146 try {
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147 Class.forName(Instrumenter.class.getName(), true, Instrumenter.class.getClassLoader());
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148 Class.forName(Debugger.class.getName(), true, Debugger.class.getClassLoader());
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149 } catch (ClassNotFoundException ex) {
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150 throw new IllegalStateException(ex);
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151 }
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152 }
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153
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154 protected Accessor() {
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155 if (this.getClass().getSimpleName().endsWith("API")) {
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156 if (API != null) {
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157 throw new IllegalStateException();
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158 }
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159 API = this;
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160 } else if (this.getClass().getSimpleName().endsWith("Nodes")) {
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161 if (NODES != null) {
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162 throw new IllegalStateException();
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163 }
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diff changeset
164 NODES = this;
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165 } else if (this.getClass().getSimpleName().endsWith("Interop")) {
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166 if (INTEROP != null) {
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diff changeset
167 throw new IllegalStateException();
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168 }
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169 INTEROP = this;
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170 } else if (this.getClass().getSimpleName().endsWith("Instrument")) {
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diff changeset
171 if (INSTRUMENT != null) {
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diff changeset
172 throw new IllegalStateException();
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173 }
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174 INSTRUMENT = this;
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175 } else if (this.getClass().getSimpleName().endsWith("Debug")) {
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diff changeset
176 if (DEBUG != null) {
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177 throw new IllegalStateException();
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178 }
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diff changeset
179 DEBUG = this;
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180 } else {
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diff changeset
181 if (SPI != null) {
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182 throw new IllegalStateException();
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183 }
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184 SPI = this;
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185 }
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186 }
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187
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188 protected Env attachEnv(Object vm, TruffleLanguage<?> language, OutputStream stdOut, OutputStream stdErr, InputStream stdIn, Instrumenter instrumenter) {
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189 return API.attachEnv(vm, language, stdOut, stdErr, stdIn, instrumenter);
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190 }
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191
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diff changeset
192 protected Object eval(TruffleLanguage<?> l, Source s) throws IOException {
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193 return API.eval(l, s);
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194 }
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195
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f879b1fe3773 Separating the TruffleVM into its own project makes it possible to cleanup various system parts interations
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diff changeset
196 protected Object importSymbol(Object vm, TruffleLanguage<?> queryingLang, String globalName) {
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diff changeset
197 return SPI.importSymbol(vm, queryingLang, globalName);
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198 }
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199
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diff changeset
200 protected Object findExportedSymbol(TruffleLanguage.Env env, String globalName, boolean onlyExplicit) {
78c3d3d8d86e Clearly separating the TruffleLanguage definition from context used during its execution. TruffleLanguage now has to have public static field INSTANCE and override createContext method.
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diff changeset
201 return API.findExportedSymbol(env, globalName, onlyExplicit);
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202 }
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diff changeset
203
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204 protected Object languageGlobal(TruffleLanguage.Env env) {
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205 return API.languageGlobal(env);
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206 }
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207
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208 @Deprecated
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209 protected ToolSupportProvider getToolSupport(@SuppressWarnings("unused") TruffleLanguage<?> l) {
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210 throw new UnsupportedOperationException();
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211 }
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212
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213 @Deprecated
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214 protected DebugSupportProvider getDebugSupport(@SuppressWarnings("unused") TruffleLanguage<?> l) {
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215 throw new UnsupportedOperationException();
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216 }
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217
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218 /**
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219 * Provided by each {@linkplain TruffleLanguage language implementation}.
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220 */
22220
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221 protected boolean isInstrumentable(Object vm, Node node) {
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222 final RootNode rootNode = node.getRootNode();
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223 Class<? extends TruffleLanguage> languageClazz = findLanguage(rootNode);
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224 TruffleLanguage language = findLanguageImpl(vm, languageClazz);
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225 return isInstrumentable(node, language);
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226 }
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227
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228 protected boolean isInstrumentable(Node node, TruffleLanguage language) {
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229 return API.isInstrumentable(node, language);
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230 }
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231
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232 /**
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233 * Provided by each {@linkplain TruffleLanguage language implementation}.
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234 */
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235 protected WrapperNode createWrapperNode(Object vm, Node node) {
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236 final RootNode rootNode = node.getRootNode();
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237 Class<? extends TruffleLanguage> languageClazz = findLanguage(rootNode);
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238 TruffleLanguage language = findLanguageImpl(vm, languageClazz);
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239 return createWrapperNode(node, language);
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240 }
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241
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242 protected WrapperNode createWrapperNode(Node node, TruffleLanguage language) {
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243 return API.createWrapperNode(node, language);
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244 }
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245
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246 /**
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247 * Provided by each {@linkplain TruffleLanguage language implementation}.
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248 */
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249 protected ASTProber getDefaultASTProber(TruffleLanguage language) {
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250 return API.getDefaultASTProber(language);
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251 }
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252
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253 protected AdvancedInstrumentRootFactory createAdvancedInstrumentRootFactory(Object vm, Class<? extends TruffleLanguage> languageClass, String expr, AdvancedInstrumentResultListener resultListener)
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254 throws IOException {
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255 return API.createAdvancedInstrumentRootFactory(vm, languageClass, expr, resultListener);
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256 }
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257
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258 protected Class<? extends TruffleLanguage> findLanguage(RootNode n) {
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259 return NODES.findLanguage(n);
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260 }
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261
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262 protected Class<? extends TruffleLanguage> findLanguage(Probe probe) {
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263 return INSTRUMENT.findLanguage(probe);
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264 }
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265
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266 protected Env findLanguage(Object known, Class<? extends TruffleLanguage> languageClass) {
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267 Object vm;
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268 if (known == null) {
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269 vm = CURRENT_VM.get();
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270 if (vm == null) {
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271 throw new IllegalStateException();
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272 }
22133
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273 if (languageClass == null) {
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274 return null;
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275 }
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276 } else {
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277 vm = known;
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278 }
22012
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diff changeset
279 return SPI.findLanguage(vm, languageClass);
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280 }
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281
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282 protected TruffleLanguage findLanguageImpl(Object known, Class<? extends TruffleLanguage> languageClass) {
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283 Object vm;
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284 if (known == null) {
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285 vm = CURRENT_VM.get();
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286 if (vm == null) {
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287 throw new IllegalStateException();
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288 }
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289 } else {
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290 vm = known;
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291 }
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292 return SPI.findLanguageImpl(vm, languageClass);
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293 }
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294
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295 protected Instrumenter getInstrumenter(Object known) {
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296 Object vm;
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297 if (known == null) {
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298 vm = CURRENT_VM.get();
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299 if (vm == null) {
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300 throw new IllegalStateException();
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301 }
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302 } else {
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303 vm = known;
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304 }
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diff changeset
305 return SPI.getInstrumenter(vm);
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306 }
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diff changeset
307
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diff changeset
308 protected Instrumenter createInstrumenter(Object vm) {
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309 return INSTRUMENT.createInstrumenter(vm);
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310 }
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311
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312 protected Debugger createDebugger(Object vm, Instrumenter instrumenter) {
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313 return DEBUG.createDebugger(vm, instrumenter);
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314 }
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315
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316 private static Reference<Object> previousVM = new WeakReference<>(null);
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317 private static Assumption oneVM = Truffle.getRuntime().createAssumption();
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318
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319 protected Closeable executionStart(Object vm, Debugger debugger, Source s) {
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320 final Closeable debugClose = DEBUG.executionStart(vm, debugger, s);
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321 final Object prev = CURRENT_VM.get();
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322 if (!(vm == previousVM.get())) {
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323 previousVM = new WeakReference<>(vm);
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324 oneVM.invalidate();
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325 oneVM = Truffle.getRuntime().createAssumption();
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326
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327 }
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328 CURRENT_VM.set(vm);
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329 class ContextCloseable implements Closeable {
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330 @Override
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331 public void close() throws IOException {
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332 CURRENT_VM.set(prev);
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333 debugClose.close();
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334 }
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335 }
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336 return new ContextCloseable();
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337 }
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338
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339 protected void dispatchEvent(Object vm, Object event) {
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340 SPI.dispatchEvent(vm, event);
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341 }
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342
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343 static Assumption oneVMAssumption() {
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344 return oneVM;
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345 }
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346
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347 @SuppressWarnings({"unchecked"})
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348 static <C> C findContext(Class<? extends TruffleLanguage> type) {
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349 Env env = SPI.findLanguage(CURRENT_VM.get(), type);
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350 return (C) API.findContext(env);
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351 }
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352
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353 /**
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354 * Don't call me. I am here only to let NetBeans debug any Truffle project.
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355 *
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356 * @param args
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357 */
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358 public static void main(String... args) {
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359 throw new IllegalStateException();
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360 }
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361
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362 protected Object findContext(Env env) {
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363 return API.findContext(env);
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364 }
22110
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365
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366 protected TruffleLanguage<?> findLanguage(Env env) {
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367 return API.findLanguage(env);
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368 }
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369
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370 protected void applyInstrumentation(Node node) {
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371 INSTRUMENT.applyInstrumentation(node);
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372 }
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373 }