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annotate truffle/com.oracle.truffle.api/src/com/oracle/truffle/api/impl/DefaultTruffleRuntime.java @ 22157:dc83cc1f94f2

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Using fully qualified imports
author Jaroslav Tulach <jaroslav.tulach@oracle.com>
date Wed, 16 Sep 2015 11:33:22 +0200
parents c6966c8ea83c
children a63bda98cfdb
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1 /*
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2 * Copyright (c) 2012, 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
a4b84ba6dc2e Introduction of the Truffle API for efficient implementation of dynamic languages on top of the Graal VM. New projects com.oracle.truffle.api for the API definition and com.oracle.truffle.api.test for API tests and documentation.
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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 com.oracle.truffle.api.Assumption;
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28 import com.oracle.truffle.api.CallTarget;
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29 import com.oracle.truffle.api.CompilerOptions;
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30 import com.oracle.truffle.api.RootCallTarget;
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31 import com.oracle.truffle.api.Truffle;
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32 import com.oracle.truffle.api.TruffleRuntime;
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33 import com.oracle.truffle.api.frame.FrameDescriptor;
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34 import com.oracle.truffle.api.frame.FrameInstance;
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35 import com.oracle.truffle.api.frame.FrameInstanceVisitor;
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36 import com.oracle.truffle.api.frame.MaterializedFrame;
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37 import com.oracle.truffle.api.frame.VirtualFrame;
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38 import com.oracle.truffle.api.nodes.DirectCallNode;
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39 import com.oracle.truffle.api.nodes.IndirectCallNode;
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40 import com.oracle.truffle.api.nodes.LoopNode;
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41 import com.oracle.truffle.api.nodes.Node;
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42 import com.oracle.truffle.api.nodes.RepeatingNode;
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43 import com.oracle.truffle.api.nodes.RootNode;
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44 import java.util.Collection;
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45 import java.util.Collections;
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46 import java.util.LinkedList;
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47 import java.util.Map;
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48 import java.util.WeakHashMap;
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49
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50 /**
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51 * Default implementation of the Truffle runtime if the virtual machine does not provide a better
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52 * performing alternative.
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53 * <p>
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54 * This is an implementation-specific class. Do not use or instantiate it. Instead, use
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55 * {@link Truffle#getRuntime()} to retrieve the current {@link TruffleRuntime}.
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56 */
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57 public final class DefaultTruffleRuntime implements TruffleRuntime {
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58
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59 private final ThreadLocal<LinkedList<FrameInstance>> stackTraces = new ThreadLocal<>();
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60 private final ThreadLocal<FrameInstance> currentFrames = new ThreadLocal<>();
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61 private final Map<RootCallTarget, Void> callTargets = Collections.synchronizedMap(new WeakHashMap<RootCallTarget, Void>());
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62
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63 public DefaultTruffleRuntime() {
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64 }
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65
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66 @Override
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67 public String getName() {
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68 return "Default Truffle Runtime";
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69 }
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70
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71 @Override
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72 public RootCallTarget createCallTarget(RootNode rootNode) {
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73 DefaultCallTarget target = new DefaultCallTarget(rootNode);
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74 rootNode.setCallTarget(target);
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75 callTargets.put(target, null);
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76 return target;
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77 }
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78
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79 public DirectCallNode createDirectCallNode(CallTarget target) {
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80 return new DefaultDirectCallNode(target);
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81 }
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82
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83 public IndirectCallNode createIndirectCallNode() {
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84 return new DefaultIndirectCallNode();
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85 }
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86
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87 @Override
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88 public VirtualFrame createVirtualFrame(Object[] arguments, FrameDescriptor frameDescriptor) {
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89 return new DefaultVirtualFrame(frameDescriptor, arguments);
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90 }
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91
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92 @Override
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93 public MaterializedFrame createMaterializedFrame(Object[] arguments) {
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94 return createMaterializedFrame(arguments, new FrameDescriptor());
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95 }
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96
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97 @Override
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98 public MaterializedFrame createMaterializedFrame(Object[] arguments, FrameDescriptor frameDescriptor) {
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99 return new DefaultMaterializedFrame(new DefaultVirtualFrame(frameDescriptor, arguments));
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100 }
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101
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102 @Override
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103 public CompilerOptions createCompilerOptions() {
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104 return new DefaultCompilerOptions();
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105 }
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106
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107 @Override
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108 public Assumption createAssumption() {
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109 return createAssumption(null);
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110 }
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111
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112 @Override
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113 public Assumption createAssumption(String name) {
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114 return new DefaultAssumption(name);
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115 }
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116
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117 private LinkedList<FrameInstance> getThreadLocalStackTrace() {
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118 LinkedList<FrameInstance> result = stackTraces.get();
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119 if (result == null) {
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120 result = new LinkedList<>();
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121 stackTraces.set(result);
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122 }
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123 return result;
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124 }
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125
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126 public FrameInstance setCurrentFrame(FrameInstance newValue) {
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127 FrameInstance oldValue = currentFrames.get();
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128 currentFrames.set(newValue);
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129 return oldValue;
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130 }
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131
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132 public void pushFrame(FrameInstance frame) {
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133 getThreadLocalStackTrace().addFirst(frame);
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134 }
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135
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136 public void popFrame() {
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137 getThreadLocalStackTrace().removeFirst();
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138 }
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139
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140 @Override
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141 public <T> T iterateFrames(FrameInstanceVisitor<T> visitor) {
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142 T result = null;
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143 for (FrameInstance frameInstance : getThreadLocalStackTrace()) {
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144 result = visitor.visitFrame(frameInstance);
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145 if (result != null) {
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146 return result;
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147 }
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148 }
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149 return result;
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150 }
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151
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152 @Override
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153 public FrameInstance getCallerFrame() {
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154 return getThreadLocalStackTrace().peekFirst();
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155 }
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156
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157 @Override
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158 public Collection<RootCallTarget> getCallTargets() {
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159 return Collections.unmodifiableSet(callTargets.keySet());
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160 }
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161
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162 @Override
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163 public FrameInstance getCurrentFrame() {
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164 return currentFrames.get();
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165 }
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166
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167 public <T> T getCapability(Class<T> capability) {
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168 return null;
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169 }
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170
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171 public void notifyTransferToInterpreter() {
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172 }
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173
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174 public LoopNode createLoopNode(RepeatingNode repeating) {
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175 if (!(repeating instanceof Node)) {
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176 throw new IllegalArgumentException("Repeating node must be of type Node.");
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177 }
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178 return new DefaultLoopNode(repeating);
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179 }
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a4b84ba6dc2e Introduction of the Truffle API for efficient implementation of dynamic languages on top of the Graal VM. New projects com.oracle.truffle.api for the API definition and com.oracle.truffle.api.test for API tests and documentation.
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180 }