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annotate graal/com.oracle.truffle.api/src/com/oracle/truffle/api/instrument/impl/InstrumentationNode.java @ 16391:50d79ad439f1

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Truffle/Instrumentation: rename PhylumTag to SyntaxTag (along with related classes/methods)
author Michael Van De Vanter <michael.van.de.vanter@oracle.com>
date Wed, 02 Jul 2014 16:06:42 -0700
parents 915ebb306fcc
children 7833417c8172
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1 /*
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2 * Copyright (c) 2013, 2014, Oracle and/or its affiliates. All rights reserved.
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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4 *
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5 * This code is free software; you can redistribute it and/or modify it
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6 * under the terms of the GNU General Public License version 2 only, as
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7 * published by the Free Software Foundation. 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.instrument.impl;
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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.truffle.api.*;
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30 import com.oracle.truffle.api.CompilerDirectives.SlowPath;
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31 import com.oracle.truffle.api.frame.*;
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32 import com.oracle.truffle.api.instrument.*;
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33 import com.oracle.truffle.api.nodes.*;
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34 import com.oracle.truffle.api.source.*;
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35
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36 /**
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37 * Abstract implementation of Truffle {@link Node} to be used for AST probes and instruments.
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38 * <p>
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39 * Coordinates propagation of Truffle AST {@link ExecutionEvents}.
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40 */
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41 public abstract class InstrumentationNode extends Node implements ExecutionEvents {
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42
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43 interface ProbeCallback {
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44 void newTagAdded(ProbeImpl probe, SyntaxTag tag);
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45 }
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46
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47 /**
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48 * Creates a new {@link Probe}, presumed to be unique to a particular {@linkplain SourceSection}
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49 * extent of guest language source code.
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50 *
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51 * @return a new probe
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52 */
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53 static ProbeImpl createProbe(SourceSection sourceSection, ProbeCallback probeCallback) {
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54 return new ProbeImpl(sourceSection, probeCallback);
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55 }
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56
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57 /**
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58 * Next in chain.
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59 */
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60 @Child protected InstrumentationNode next;
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61
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62 protected InstrumentationNode() {
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63 }
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64
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65 /**
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66 * Gets the {@link Probe} to which this instrument is attached; {@code null} if not attached.
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67 */
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68 protected Probe getProbe() {
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69 final InstrumentationNode parent = (InstrumentationNode) getParent();
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70 return parent == null ? null : parent.getProbe();
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71 }
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72
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73 /**
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74 * Add a probe to the end of this probe chain.
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75 */
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76 private void internalAddInstrument(Instrument newInstrument) {
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77 if (next == null) {
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78 this.next = insert(newInstrument);
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79 } else {
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80 next.internalAddInstrument(newInstrument);
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81 }
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82 }
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83
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84 private void internalRemoveInstrument(Instrument oldInstrument) {
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85 if (next == null) {
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86 throw new RuntimeException("Couldn't find probe to remove: " + oldInstrument);
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87 } else if (next == oldInstrument) {
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88 if (oldInstrument.next == null) {
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89 this.next = null;
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90 } else {
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91 this.next = insert(oldInstrument.next);
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92 oldInstrument.next = null;
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93 }
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94 } else {
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95 next.internalRemoveInstrument(oldInstrument);
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96 }
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97 }
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98
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99 /**
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100 * Reports to the instance of {@link Probe} holding this instrument, if any, that some essential
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101 * state has changed that requires deoptimization.
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102 */
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103 @CompilerDirectives.SlowPath
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104 protected void notifyProbeChanged(Instrument instrument) {
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105 Probe probe = getProbe();
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106 if (probe != null) {
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107 final ProbeImpl probeImpl = (ProbeImpl) probe;
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108 probeImpl.notifyProbeChanged(instrument);
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109 }
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110 }
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111
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112 protected void internalEnter(Node astNode, VirtualFrame frame) {
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113 enter(astNode, frame);
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114 if (next != null) {
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115 next.internalEnter(astNode, frame);
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116 }
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117 }
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118
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119 protected void internalLeave(Node astNode, VirtualFrame frame) {
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120 leave(astNode, frame);
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121 if (next != null) {
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122 next.internalLeave(astNode, frame);
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123 }
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124 }
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125
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126 protected void internalLeave(Node astNode, VirtualFrame frame, boolean result) {
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127 leave(astNode, frame, result);
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128 if (next != null) {
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129 next.internalLeave(astNode, frame, result);
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130 }
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131 }
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132
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133 protected void internalLeave(Node astNode, VirtualFrame frame, byte result) {
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134 leave(astNode, frame, result);
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135 if (next != null) {
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136 next.internalLeave(astNode, frame, result);
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137 }
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138 }
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139
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140 protected void internalLeave(Node astNode, VirtualFrame frame, short result) {
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141 leave(astNode, frame, result);
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142 if (next != null) {
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143 next.internalLeave(astNode, frame, result);
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144 }
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145 }
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146
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147 protected void internalLeave(Node astNode, VirtualFrame frame, int result) {
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148 leave(astNode, frame, result);
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149 if (next != null) {
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150 next.internalLeave(astNode, frame, result);
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151 }
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152 }
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153
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154 protected void internalLeave(Node astNode, VirtualFrame frame, long result) {
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155 leave(astNode, frame, result);
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156 if (next != null) {
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157 next.internalLeave(astNode, frame, result);
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158 }
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159 }
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160
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161 protected void internalLeave(Node astNode, VirtualFrame frame, char result) {
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162 leave(astNode, frame, result);
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163 if (next != null) {
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164 next.internalLeave(astNode, frame, result);
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165 }
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166 }
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167
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168 protected void internalLeave(Node astNode, VirtualFrame frame, float result) {
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169 leave(astNode, frame, result);
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170 if (next != null) {
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171 next.internalLeave(astNode, frame, result);
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172 }
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173 }
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174
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175 protected void internalLeave(Node astNode, VirtualFrame frame, double result) {
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176 leave(astNode, frame, result);
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177 if (next != null) {
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178 next.internalLeave(astNode, frame, result);
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179 }
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180 }
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181
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182 protected void internalLeave(Node astNode, VirtualFrame frame, Object result) {
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183 leave(astNode, frame, result);
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184 if (next != null) {
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185 next.internalLeave(astNode, frame, result);
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186 }
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187 }
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188
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189 protected void internalLeaveExceptional(Node astNode, VirtualFrame frame, Exception e) {
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190 leaveExceptional(astNode, frame, null);
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191 if (next != null) {
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192 next.internalLeaveExceptional(astNode, frame, e);
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193 }
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194 }
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195
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196 /**
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197 * Holder of a chain of {@linkplain InstrumentationNode instruments}: manages the
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198 * {@link Assumption} that none of the instruments have changed since last checked.
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199 * <p>
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200 * An instance is intended to be shared by every clone of the AST node with which it is
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201 * originally attached, so it holds no parent pointer.
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202 * <p>
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203 * May be categorized by one or more {@linkplain SyntaxTag tags}, signifying information useful
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204 * for instrumentation about its AST location(s).
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205 */
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206 static final class ProbeImpl extends InstrumentationNode implements Probe {
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207
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208 private final ProbeCallback probeCallback;
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209
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210 /**
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211 * Source information about the AST node (and its clones) to which this probe is attached.
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212 */
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213 private final SourceSection probedSourceSection;
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214
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215 // TODO (mlvdv) assumption model broken
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216 @CompilerDirectives.CompilationFinal private Assumption probeUnchanged;
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217
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218 @CompilerDirectives.CompilationFinal private SyntaxTagTrap trap = null;
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219
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220 private final ArrayList<SyntaxTag> tags = new ArrayList<>();
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221
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222 private ProbeImpl(SourceSection sourceSection, ProbeCallback probeCallback) {
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223 this.probeCallback = probeCallback;
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224 this.probedSourceSection = sourceSection;
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225 this.probeUnchanged = Truffle.getRuntime().createAssumption();
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226 this.next = null;
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227 }
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228
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229 public SourceSection getSourceLocation() {
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230 return probedSourceSection;
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231 }
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232
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233 @SlowPath
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234 public void tagAs(SyntaxTag tag) {
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235 assert tag != null;
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236 if (!tags.contains(tag)) {
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237 tags.add(tag);
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238 probeCallback.newTagAdded(this, tag);
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239 }
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240 }
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241
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242 public boolean isTaggedAs(SyntaxTag tag) {
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243 assert tag != null;
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244 return tags.contains(tag);
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245 }
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246
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247 public Iterable<SyntaxTag> getSyntaxTags() {
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248 return tags;
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249 }
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250
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251 @SlowPath
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252 public void addInstrument(Instrument instrument) {
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253 probeUnchanged.invalidate();
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254 super.internalAddInstrument(instrument);
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255 probeUnchanged = Truffle.getRuntime().createAssumption();
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256 }
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257
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258 @SlowPath
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259 public void removeInstrument(Instrument instrument) {
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260 probeUnchanged.invalidate();
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261 super.internalRemoveInstrument(instrument);
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262 probeUnchanged = Truffle.getRuntime().createAssumption();
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263 }
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264
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265 @Override
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266 protected Probe getProbe() {
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267 return this;
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268 }
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269
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270 @Override
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271 @SlowPath
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272 protected void notifyProbeChanged(Instrument instrument) {
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273 probeUnchanged.invalidate();
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274 probeUnchanged = Truffle.getRuntime().createAssumption();
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275 }
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276
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277 @SlowPath
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278 void setTrap(SyntaxTagTrap trap) {
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279 assert trap == null || isTaggedAs(trap.getTag());
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280 probeUnchanged.invalidate();
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281 this.trap = trap;
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282 probeUnchanged = Truffle.getRuntime().createAssumption();
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283 }
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284
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285 public void enter(Node astNode, VirtualFrame frame) {
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286 if (trap != null || next != null) {
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287 if (!probeUnchanged.isValid()) {
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288 CompilerDirectives.transferToInterpreter();
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289 }
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290 if (trap != null) {
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291 trap.tagTrappedAt(astNode, frame.materialize());
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292 }
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293 if (next != null) {
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294 next.internalEnter(astNode, frame);
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295 }
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296 }
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297 }
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298
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299 public void leave(Node astNode, VirtualFrame frame) {
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300 if (next != null) {
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301 if (!probeUnchanged.isValid()) {
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302 CompilerDirectives.transferToInterpreter();
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303 }
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304 next.internalLeave(astNode, frame);
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305 }
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306 }
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307
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308 public void leave(Node astNode, VirtualFrame frame, boolean result) {
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309 if (next != null) {
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310 if (!probeUnchanged.isValid()) {
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311 CompilerDirectives.transferToInterpreter();
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312 }
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313 next.internalLeave(astNode, frame, result);
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314 }
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315 }
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316
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317 public void leave(Node astNode, VirtualFrame frame, byte result) {
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318 if (next != null) {
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319 if (!probeUnchanged.isValid()) {
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320 CompilerDirectives.transferToInterpreter();
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321 }
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322 next.internalLeave(astNode, frame, result);
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323 }
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324 }
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325
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326 public void leave(Node astNode, VirtualFrame frame, short result) {
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327 if (next != null) {
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328 if (!probeUnchanged.isValid()) {
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329 CompilerDirectives.transferToInterpreter();
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330 }
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331 next.internalLeave(astNode, frame, result);
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332 }
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333 }
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334
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335 public void leave(Node astNode, VirtualFrame frame, int result) {
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336 if (next != null) {
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337 if (!probeUnchanged.isValid()) {
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338 CompilerDirectives.transferToInterpreter();
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339 }
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340 next.internalLeave(astNode, frame, result);
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341 }
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342 }
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343
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344 public void leave(Node astNode, VirtualFrame frame, long result) {
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345 if (next != null) {
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346 if (!probeUnchanged.isValid()) {
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347 CompilerDirectives.transferToInterpreter();
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348 }
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349 next.internalLeave(astNode, frame, result);
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350 }
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351 }
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352
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353 public void leave(Node astNode, VirtualFrame frame, char result) {
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354 if (next != null) {
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355 if (!probeUnchanged.isValid()) {
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356 CompilerDirectives.transferToInterpreter();
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357 }
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358 next.internalLeave(astNode, frame, result);
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359 }
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360 }
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361
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362 public void leave(Node astNode, VirtualFrame frame, float result) {
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363 if (next != null) {
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364 if (!probeUnchanged.isValid()) {
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365 CompilerDirectives.transferToInterpreter();
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366 }
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367 next.internalLeave(astNode, frame, result);
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368 }
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369 }
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370
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371 public void leave(Node astNode, VirtualFrame frame, double result) {
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372 if (next != null) {
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diff changeset
373 if (!probeUnchanged.isValid()) {
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374 CompilerDirectives.transferToInterpreter();
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375 }
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diff changeset
376 next.internalLeave(astNode, frame, result);
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377 }
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378 }
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379
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380 public void leave(Node astNode, VirtualFrame frame, Object result) {
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381 if (next != null) {
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382 if (!probeUnchanged.isValid()) {
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383 CompilerDirectives.transferToInterpreter();
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384 }
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385 next.internalLeave(astNode, frame, result);
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386 }
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387 }
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388
8c34e2cc4add Truffle/Instrumentation: significant reorganization of the instrumentation framework's implementation and connection to the runtime ExecutionContext, with some new features, including a Tag-based "trap" mechanisms.
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389 public void leaveExceptional(Node astNode, VirtualFrame frame, Exception e) {
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390 if (next != null) {
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391 if (!probeUnchanged.isValid()) {
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392 CompilerDirectives.transferToInterpreter();
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393 }
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394 next.internalLeaveExceptional(astNode, frame, e);
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395 }
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396 }
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397
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398 }
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399
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400 }