Mercurial > hg > truffle
annotate truffle/com.oracle.truffle.api/src/com/oracle/truffle/api/impl/Accessor.java @ 22219:1c0f490984d5
Merge with f47b601edbc626dcfe8b3636933b4834c89f7779
author | Michael Van De Vanter <michael.van.de.vanter@oracle.com> |
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date | Wed, 16 Sep 2015 15:36:22 -0700 |
parents | dc83cc1f94f2 d3bdaa91bc82 |
children | 20380d1d41f2 |
rev | line source |
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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.Reader; |
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30 import java.io.Writer; |
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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.nodes.Node; |
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50 import com.oracle.truffle.api.nodes.RootNode; |
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51 import com.oracle.truffle.api.source.Source; |
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52 |
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53 /** |
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54 * Communication between TruffleVM, TruffleLanguage API/SPI, and other services. |
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55 */ |
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56 @SuppressWarnings("rawtypes") |
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57 public abstract class Accessor { |
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58 private static Accessor API; |
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59 private static Accessor SPI; |
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60 private static Accessor NODES; |
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61 private static Accessor INTEROP; |
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62 private static Accessor INSTRUMENT; |
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63 private static Accessor TOOL; |
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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 ASTProber getDefaultASTProber() { |
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108 return null; |
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109 } |
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110 |
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111 @Override |
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112 protected Visualizer getVisualizer() { |
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113 return null; |
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114 } |
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115 |
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116 @SuppressWarnings("deprecation") |
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117 @Override |
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118 protected void enableASTProbing(ASTProber astProber) { |
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119 throw new UnsupportedOperationException(); |
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120 } |
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121 |
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122 @Override |
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123 protected Object evalInContext(Source source, Node node, MaterializedFrame mFrame) throws IOException { |
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124 return null; |
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125 } |
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126 |
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127 @Override |
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128 protected AdvancedInstrumentRootFactory createAdvancedInstrumentRootFactory(String expr, AdvancedInstrumentResultListener resultListener) throws IOException { |
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129 return null; |
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130 } |
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131 }; |
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132 lng.hashCode(); |
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133 new Node(null) { |
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134 }.getRootNode(); |
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135 |
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136 try { |
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137 Class.forName(Instrumenter.class.getName(), true, Instrumenter.class.getClassLoader()); |
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138 Class.forName(Debugger.class.getName(), true, Debugger.class.getClassLoader()); |
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139 } catch (ClassNotFoundException ex) { |
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140 throw new IllegalStateException(ex); |
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141 } |
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142 } |
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143 |
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144 protected Accessor() { |
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145 if (this.getClass().getSimpleName().endsWith("API")) { |
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146 if (API != null) { |
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147 throw new IllegalStateException(); |
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148 } |
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149 API = this; |
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150 } else if (this.getClass().getSimpleName().endsWith("Nodes")) { |
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151 if (NODES != null) { |
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152 throw new IllegalStateException(); |
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153 } |
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154 NODES = this; |
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155 } else if (this.getClass().getSimpleName().endsWith("Interop")) { |
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156 if (INTEROP != null) { |
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157 throw new IllegalStateException(); |
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158 } |
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159 INTEROP = this; |
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160 } else if (this.getClass().getSimpleName().endsWith("Instrument")) { |
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161 if (INSTRUMENT != null) { |
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162 throw new IllegalStateException(); |
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163 } |
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164 INSTRUMENT = this; |
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165 } else if (this.getClass().getSimpleName().endsWith("Debug")) { |
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166 if (DEBUG != null) { |
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167 throw new IllegalStateException(); |
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168 } |
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169 DEBUG = this; |
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170 } else if (this.getClass().getSimpleName().endsWith("Tool")) { |
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171 if (TOOL != null) { |
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172 throw new IllegalStateException(); |
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173 } |
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174 TOOL = this; |
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175 } else { |
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176 if (SPI != null) { |
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177 throw new IllegalStateException(); |
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178 } |
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179 SPI = this; |
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180 } |
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181 } |
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182 |
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183 protected Env attachEnv(Object vm, TruffleLanguage<?> language, Writer stdOut, Writer stdErr, Reader stdIn) { |
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184 return API.attachEnv(vm, language, stdOut, stdErr, stdIn); |
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185 } |
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186 |
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187 protected Object eval(TruffleLanguage<?> l, Source s) throws IOException { |
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188 return API.eval(l, s); |
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189 } |
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190 |
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191 protected Object importSymbol(Object vm, TruffleLanguage<?> queryingLang, String globalName) { |
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192 return SPI.importSymbol(vm, queryingLang, globalName); |
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193 } |
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194 |
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195 protected Object findExportedSymbol(TruffleLanguage.Env env, String globalName, boolean onlyExplicit) { |
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196 return API.findExportedSymbol(env, globalName, onlyExplicit); |
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197 } |
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198 |
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199 protected Object languageGlobal(TruffleLanguage.Env env) { |
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200 return API.languageGlobal(env); |
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201 } |
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202 |
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203 @Deprecated |
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204 protected ToolSupportProvider getToolSupport(@SuppressWarnings("unused") TruffleLanguage<?> l) { |
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205 throw new UnsupportedOperationException(); |
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206 } |
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207 |
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208 @Deprecated |
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209 protected DebugSupportProvider getDebugSupport(@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 protected ASTProber getDefaultASTProber(TruffleLanguage language) { |
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214 return API.getDefaultASTProber(language); |
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215 } |
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216 |
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217 protected AdvancedInstrumentRootFactory createAdvancedInstrumentRootFactory(Object vm, Class<? extends TruffleLanguage> languageClass, String expr, AdvancedInstrumentResultListener resultListener) |
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218 throws IOException { |
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219 return API.createAdvancedInstrumentRootFactory(vm, languageClass, expr, resultListener); |
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220 } |
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221 |
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222 protected Class<? extends TruffleLanguage> findLanguage(RootNode n) { |
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223 return NODES.findLanguage(n); |
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224 } |
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225 |
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226 protected Class<? extends TruffleLanguage> findLanguage(Probe probe) { |
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227 return INSTRUMENT.findLanguage(probe); |
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228 } |
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229 |
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230 protected Env findLanguage(Object known, Class<? extends TruffleLanguage> languageClass) { |
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231 Object vm; |
22049 | 232 if (known == null) { |
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233 vm = CURRENT_VM.get(); |
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234 if (vm == null) { |
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235 throw new IllegalStateException(); |
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236 } |
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237 if (languageClass == null) { |
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238 return null; |
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239 } |
22049 | 240 } else { |
241 vm = known; | |
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242 } |
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243 return SPI.findLanguage(vm, languageClass); |
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244 } |
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245 |
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246 protected TruffleLanguage findLanguageImpl(Object known, Class<? extends TruffleLanguage> languageClass) { |
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247 Object vm; |
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248 if (known == null) { |
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249 vm = CURRENT_VM.get(); |
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250 if (vm == null) { |
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251 throw new IllegalStateException(); |
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252 } |
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253 } else { |
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254 vm = known; |
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255 } |
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256 return SPI.findLanguageImpl(vm, languageClass); |
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257 } |
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258 |
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259 protected Instrumenter getInstrumenter(Object known) { |
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260 Object vm; |
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261 if (known == null) { |
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262 vm = CURRENT_VM.get(); |
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263 if (vm == null) { |
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264 throw new IllegalStateException(); |
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265 } |
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266 } else { |
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267 vm = known; |
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268 } |
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269 return SPI.getInstrumenter(vm); |
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270 } |
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271 |
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272 protected Instrumenter createInstrumenter() { |
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273 return INSTRUMENT.createInstrumenter(); |
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274 } |
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275 |
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276 private static Reference<Object> previousVM = new WeakReference<>(null); |
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277 private static Assumption oneVM = Truffle.getRuntime().createAssumption(); |
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278 |
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279 protected Closeable executionStart(Object vm, Debugger[] fillIn, Source s) { |
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280 final Closeable debugClose = DEBUG.executionStart(vm, fillIn, s); |
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281 final Object prev = CURRENT_VM.get(); |
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282 if (!(vm == previousVM.get())) { |
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283 previousVM = new WeakReference<>(vm); |
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284 oneVM.invalidate(); |
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285 oneVM = Truffle.getRuntime().createAssumption(); |
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286 |
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287 } |
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288 CURRENT_VM.set(vm); |
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289 class ContextCloseable implements Closeable { |
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290 @Override |
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291 public void close() throws IOException { |
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292 CURRENT_VM.set(prev); |
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293 debugClose.close(); |
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294 } |
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295 } |
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296 return new ContextCloseable(); |
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297 } |
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298 |
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299 protected void dispatchEvent(Object vm, Object event) { |
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300 SPI.dispatchEvent(vm, event); |
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301 } |
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302 |
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303 static Assumption oneVMAssumption() { |
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304 return oneVM; |
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305 } |
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306 |
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307 @SuppressWarnings({"unchecked", "rawtypes"}) |
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308 static <C> C findContext(Class<? extends TruffleLanguage> type) { |
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309 Env env = SPI.findLanguage(CURRENT_VM.get(), type); |
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310 return (C) API.findContext(env); |
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311 } |
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312 |
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313 /** |
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314 * Don't call me. I am here only to let NetBeans debug any Truffle project. |
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315 * |
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316 * @param args |
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317 */ |
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318 public static void main(String... args) { |
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319 throw new IllegalStateException(); |
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320 } |
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321 |
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322 protected Object findContext(Env env) { |
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323 return API.findContext(env); |
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324 } |
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325 |
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326 protected TruffleLanguage<?> findLanguage(Env env) { |
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327 return API.findLanguage(env); |
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328 } |
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329 |
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330 protected void applyInstrumentation(Node node) { |
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331 INSTRUMENT.applyInstrumentation(node); |
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332 } |
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333 } |