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annotate graal/com.oracle.truffle.dsl.processor/src/com/oracle/truffle/dsl/processor/model/SpecializationData.java @ 19291:f4792a544170

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Truffle-DSL: implement new assumptions semantics.
author Christian Humer <christian.humer@gmail.com>
date Wed, 11 Feb 2015 12:13:44 +0100
parents 62c43fcf5be2
children 21b9b9941775
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1 /*
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2 * Copyright (c) 2012, 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.
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8 *
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9 * This code is distributed in the hope that it will be useful, but WITHOUT
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10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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12 * version 2 for more details (a copy is included in the LICENSE file that
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13 * accompanied this code).
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14 *
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15 * You should have received a copy of the GNU General Public License version
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16 * 2 along with this work; if not, write to the Free Software Foundation,
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17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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18 *
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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20 * or visit www.oracle.com if you need additional information or have any
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21 * questions.
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22 */
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23 package com.oracle.truffle.dsl.processor.model;
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25 import java.util.*;
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26
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27 import javax.lang.model.element.*;
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28
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29 import com.oracle.truffle.dsl.processor.*;
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30 import com.oracle.truffle.dsl.processor.expression.*;
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31 import com.oracle.truffle.dsl.processor.java.*;
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32
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33 public final class SpecializationData extends TemplateMethod {
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34
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35 public enum SpecializationKind {
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36 UNINITIALIZED,
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37 SPECIALIZED,
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38 POLYMORPHIC,
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39 FALLBACK
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40 }
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41
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42 private final NodeData node;
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43 private final SpecializationKind kind;
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44 private final List<SpecializationThrowsData> exceptions;
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45 private List<GuardExpression> guards = Collections.emptyList();
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46 private List<CacheExpression> caches = Collections.emptyList();
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47 private List<AssumptionExpression> assumptionExpressions = Collections.emptyList();
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48 private List<ShortCircuitData> shortCircuits;
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49 private final Set<SpecializationData> contains = new TreeSet<>();
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50 private final Set<String> containsNames = new TreeSet<>();
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51 private final Set<SpecializationData> excludedBy = new TreeSet<>();
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52 private String insertBeforeName;
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53 private SpecializationData insertBefore;
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54 private boolean reachable;
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55 private int index;
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56 private DSLExpression limitExpression;
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57
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58 public SpecializationData(NodeData node, TemplateMethod template, SpecializationKind kind, List<SpecializationThrowsData> exceptions) {
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59 super(template);
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60 this.node = node;
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61 this.kind = kind;
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62 this.exceptions = exceptions;
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63 this.index = template.getNaturalOrder();
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64
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65 for (SpecializationThrowsData exception : exceptions) {
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66 exception.setSpecialization(this);
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67 }
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68 }
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69
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70 public boolean isDynamicParameterBound(DSLExpression expression) {
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71 Set<VariableElement> boundVariables = expression.findBoundVariableElements();
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72 for (Parameter parameter : getDynamicParameters()) {
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73 if (boundVariables.contains(parameter.getVariableElement())) {
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74 return true;
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75 }
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76 }
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77 return false;
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78 }
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79
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80 public Parameter findByVariable(VariableElement variable) {
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81 for (Parameter parameter : getParameters()) {
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82 if (ElementUtils.variableEquals(parameter.getVariableElement(), variable)) {
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83 return parameter;
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84 }
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85 }
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86 return null;
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87 }
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88
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89 public DSLExpression getLimitExpression() {
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90 return limitExpression;
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91 }
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92
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93 public void setLimitExpression(DSLExpression limitExpression) {
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94 this.limitExpression = limitExpression;
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95 }
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96
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97 public void setInsertBefore(SpecializationData insertBefore) {
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98 this.insertBefore = insertBefore;
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99 }
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100
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101 public void setInsertBeforeName(String insertBeforeName) {
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102 this.insertBeforeName = insertBeforeName;
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103 }
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104
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105 public SpecializationData getInsertBefore() {
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106 return insertBefore;
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107 }
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108
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109 public String getInsertBeforeName() {
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110 return insertBeforeName;
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111 }
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112
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113 public Set<String> getContainsNames() {
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114 return containsNames;
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115 }
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116
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117 public SpecializationData(NodeData node, TemplateMethod template, SpecializationKind kind) {
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118 this(node, template, kind, new ArrayList<SpecializationThrowsData>());
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119 }
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120
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121 public Set<SpecializationData> getContains() {
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122 return contains;
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123 }
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124
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125 public Set<SpecializationData> getExcludedBy() {
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126 return excludedBy;
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127 }
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128
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129 public void setReachable(boolean reachable) {
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130 this.reachable = reachable;
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131 }
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132
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133 public boolean isReachable() {
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134 return reachable;
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135 }
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136
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137 public boolean isPolymorphic() {
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138 return kind == SpecializationKind.POLYMORPHIC;
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139 }
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140
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141 public List<Parameter> getDynamicParameters() {
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142 List<Parameter> uncachedParameters = new ArrayList<>(getParameters());
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143 for (CacheExpression cacheExpression : getCaches()) {
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144 uncachedParameters.remove(cacheExpression.getParameter());
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145 }
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146 return uncachedParameters;
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147 }
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148
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149 @Override
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150 protected List<MessageContainer> findChildContainers() {
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151 List<MessageContainer> sinks = new ArrayList<>();
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152 if (exceptions != null) {
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153 sinks.addAll(exceptions);
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154 }
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155 if (guards != null) {
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156 sinks.addAll(guards);
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157 }
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158 if (caches != null) {
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159 sinks.addAll(caches);
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160 }
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161 if (assumptionExpressions != null) {
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162 sinks.addAll(assumptionExpressions);
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163 }
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164 return sinks;
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165 }
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166
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167 public boolean hasRewrite(ProcessorContext context) {
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168 if (!getExceptions().isEmpty()) {
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169 return true;
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170 }
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171 if (!getGuards().isEmpty()) {
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172 return true;
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173 }
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174 if (!getAssumptionExpressions().isEmpty()) {
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175 return true;
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176 }
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177
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178 for (Parameter parameter : getSignatureParameters()) {
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179 NodeChildData child = parameter.getSpecification().getExecution().getChild();
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180 ExecutableTypeData type = child.findExecutableType(parameter.getTypeSystemType());
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181 if (type == null) {
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182 type = child.findAnyGenericExecutableType(context);
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183 }
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184 if (type.hasUnexpectedValue(context)) {
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185 return true;
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186 }
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187 if (type.getReturnType().getTypeSystemType().needsCastTo(parameter.getTypeSystemType())) {
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188 return true;
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189 }
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190
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191 }
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192 return false;
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193 }
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194
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195 @Override
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196 public int compareTo(TemplateMethod other) {
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197 if (this == other) {
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198 return 0;
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199 } else if (!(other instanceof SpecializationData)) {
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200 return super.compareTo(other);
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201 }
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202 SpecializationData m2 = (SpecializationData) other;
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203 int kindOrder = kind.compareTo(m2.kind);
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204 if (kindOrder != 0) {
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205 return kindOrder;
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206 }
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207
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208 int compare = 0;
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209 int order1 = index;
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210 int order2 = m2.index;
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211 if (order1 != NO_NATURAL_ORDER && order2 != NO_NATURAL_ORDER) {
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212 compare = Integer.compare(order1, order2);
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213 if (compare != 0) {
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214 return compare;
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215 }
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216 }
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217
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218 return super.compareTo(other);
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219 }
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220
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221 public void setIndex(int order) {
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222 this.index = order;
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223 }
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224
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225 public int getIndex() {
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226 return index;
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227 }
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228
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229 public NodeData getNode() {
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230 return node;
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231 }
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232
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233 public void setGuards(List<GuardExpression> guards) {
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234 this.guards = guards;
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235 }
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236
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237 public boolean isSpecialized() {
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238 return kind == SpecializationKind.SPECIALIZED;
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239 }
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240
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241 public boolean isFallback() {
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242 return kind == SpecializationKind.FALLBACK;
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243 }
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244
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245 public boolean isUninitialized() {
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246 return kind == SpecializationKind.UNINITIALIZED;
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247 }
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248
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249 public List<SpecializationThrowsData> getExceptions() {
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250 return exceptions;
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251 }
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252
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253 public List<GuardExpression> getGuards() {
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254 return guards;
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255 }
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256
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257 public void setShortCircuits(List<ShortCircuitData> shortCircuits) {
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258 this.shortCircuits = shortCircuits;
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259 }
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260
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261 public List<ShortCircuitData> getShortCircuits() {
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262 return shortCircuits;
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263 }
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264
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265 public SpecializationData findNextSpecialization() {
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266 List<SpecializationData> specializations = node.getSpecializations();
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267 for (int i = 0; i < specializations.size() - 1; i++) {
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268 if (specializations.get(i) == this) {
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269 return specializations.get(i + 1);
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270 }
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271 }
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272 return null;
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273 }
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274
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275 @Override
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276 public String toString() {
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277 return String.format("%s [id = %s, method = %s, guards = %s, signature = %s]", getClass().getSimpleName(), getId(), getMethod(), getGuards(), getTypeSignature());
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278 }
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279
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280 public boolean isFrameUsed() {
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281 return getFrame() != null;
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282 }
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283
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284 public List<CacheExpression> getCaches() {
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285 return caches;
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286 }
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6ee7afea175a Truffle-DSL: Fixed @SlowPath was not applied to certain specialize0 implementations. This will reduce the pressure on the truffle cache.
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287
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288 public void setCaches(List<CacheExpression> caches) {
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289 this.caches = caches;
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290 }
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291
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292 public void setAssumptionExpressions(List<AssumptionExpression> assumptionExpressions) {
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293 this.assumptionExpressions = assumptionExpressions;
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294 }
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295
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296 public List<AssumptionExpression> getAssumptionExpressions() {
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297 return assumptionExpressions;
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980db6c0bcd3 Truffle-DSL: fixed invalid @SlowPath on generic execute methods. (GRAAL-490 #resolve)
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298 }
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299
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300 public boolean hasMultipleInstances() {
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301 if (!getCaches().isEmpty()) {
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302 for (GuardExpression guard : getGuards()) {
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303 DSLExpression guardExpression = guard.getExpression();
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304 Set<VariableElement> boundVariables = guardExpression.findBoundVariableElements();
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305 if (isDynamicParameterBound(guardExpression)) {
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306 for (CacheExpression cache : getCaches()) {
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diff changeset
307 if (boundVariables.contains(cache.getParameter().getVariableElement())) {
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diff changeset
308 return true;
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diff changeset
309 }
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diff changeset
310 }
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311 }
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312 }
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313 }
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diff changeset
314 return false;
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diff changeset
315 }
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diff changeset
316
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317 public boolean isReachableAfter(SpecializationData prev) {
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diff changeset
318 if (!prev.isSpecialized()) {
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319 return true;
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320 }
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321
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diff changeset
322 if (!prev.getExceptions().isEmpty()) {
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diff changeset
323 // may get excluded by exception
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diff changeset
324 return true;
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diff changeset
325 }
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diff changeset
326
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diff changeset
327 if (hasMultipleInstances()) {
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diff changeset
328 // may fallthrough due to limit
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329 return true;
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diff changeset
330 }
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diff changeset
331
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diff changeset
332 Iterator<Parameter> currentSignature = getSignatureParameters().iterator();
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diff changeset
333 Iterator<Parameter> prevSignature = prev.getSignatureParameters().iterator();
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diff changeset
334
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diff changeset
335 while (currentSignature.hasNext() && prevSignature.hasNext()) {
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diff changeset
336 TypeData currentType = currentSignature.next().getTypeSystemType();
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diff changeset
337 TypeData prevType = prevSignature.next().getTypeSystemType();
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diff changeset
338
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diff changeset
339 if (!currentType.isImplicitSubtypeOf(prevType)) {
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diff changeset
340 return true;
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diff changeset
341 }
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diff changeset
342 }
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diff changeset
343
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diff changeset
344 if (!prev.getAssumptionExpressions().isEmpty()) {
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diff changeset
345 // TODO: chumer: we could at least check reachability after trivial assumptions
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diff changeset
346 // not sure if this is worth it.
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diff changeset
347 return true;
16755
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diff changeset
348 }
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diff changeset
349
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diff changeset
350 Iterator<GuardExpression> prevGuards = prev.getGuards().iterator();
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diff changeset
351 Iterator<GuardExpression> currentGuards = getGuards().iterator();
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diff changeset
352 while (prevGuards.hasNext()) {
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diff changeset
353 GuardExpression prevGuard = prevGuards.next();
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diff changeset
354 GuardExpression currentGuard = currentGuards.hasNext() ? currentGuards.next() : null;
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diff changeset
355 if (currentGuard == null || !currentGuard.implies(prevGuard)) {
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diff changeset
356 return true;
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diff changeset
357 }
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diff changeset
358 }
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diff changeset
359
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diff changeset
360 return false;
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diff changeset
361 }
19289
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diff changeset
362
62c43fcf5be2 Truffle-DSL: implement @Cached and fixes for the new guard expression syntax.
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diff changeset
363 public CacheExpression findCache(Parameter resolvedParameter) {
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diff changeset
364 for (CacheExpression cache : getCaches()) {
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parents: 19283
diff changeset
365 if (cache.getParameter() == resolvedParameter) {
62c43fcf5be2 Truffle-DSL: implement @Cached and fixes for the new guard expression syntax.
Christian Humer <christian.humer@gmail.com>
parents: 19283
diff changeset
366 return cache;
62c43fcf5be2 Truffle-DSL: implement @Cached and fixes for the new guard expression syntax.
Christian Humer <christian.humer@gmail.com>
parents: 19283
diff changeset
367 }
62c43fcf5be2 Truffle-DSL: implement @Cached and fixes for the new guard expression syntax.
Christian Humer <christian.humer@gmail.com>
parents: 19283
diff changeset
368 }
62c43fcf5be2 Truffle-DSL: implement @Cached and fixes for the new guard expression syntax.
Christian Humer <christian.humer@gmail.com>
parents: 19283
diff changeset
369 return null;
62c43fcf5be2 Truffle-DSL: implement @Cached and fixes for the new guard expression syntax.
Christian Humer <christian.humer@gmail.com>
parents: 19283
diff changeset
370 }
62c43fcf5be2 Truffle-DSL: implement @Cached and fixes for the new guard expression syntax.
Christian Humer <christian.humer@gmail.com>
parents: 19283
diff changeset
371
10597
79041ab43660 Truffle-DSL: API-change: Renamed truffle.api.codegen to truffle.api.dsl for all projects and packages.
Christian Humer <christian.humer@gmail.com>
parents:
diff changeset
372 }