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annotate truffle/com.oracle.truffle.dsl.processor/src/com/oracle/truffle/dsl/processor/model/SpecializationData.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 9c8c0937da41
children dbbcd8eb5dae
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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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24
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25 import com.oracle.truffle.dsl.processor.ProcessorContext;
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26 import com.oracle.truffle.dsl.processor.expression.DSLExpression;
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27 import com.oracle.truffle.dsl.processor.java.ElementUtils;
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28 import java.util.ArrayList;
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29 import java.util.Collections;
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30 import java.util.Iterator;
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31 import java.util.List;
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32 import java.util.Set;
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33 import java.util.TreeSet;
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34 import javax.lang.model.element.VariableElement;
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35 import javax.lang.model.type.TypeMirror;
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36
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37 public final class SpecializationData extends TemplateMethod {
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38
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39 public enum SpecializationKind {
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40 UNINITIALIZED,
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41 SPECIALIZED,
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42 POLYMORPHIC,
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43 FALLBACK
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44 }
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45
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46 private final NodeData node;
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47 private SpecializationKind kind;
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48 private final List<SpecializationThrowsData> exceptions;
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49 private List<GuardExpression> guards = Collections.emptyList();
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50 private List<CacheExpression> caches = Collections.emptyList();
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51 private List<AssumptionExpression> assumptionExpressions = Collections.emptyList();
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52 private List<ShortCircuitData> shortCircuits;
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53 private final Set<SpecializationData> contains = new TreeSet<>();
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54 private final Set<String> containsNames = new TreeSet<>();
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55 private final Set<SpecializationData> excludedBy = new TreeSet<>();
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56 private String insertBeforeName;
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57 private SpecializationData insertBefore;
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58 private boolean reachable;
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59 private int index;
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60 private DSLExpression limitExpression;
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61
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62 public SpecializationData(NodeData node, TemplateMethod template, SpecializationKind kind, List<SpecializationThrowsData> exceptions) {
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63 super(template);
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64 this.node = node;
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65 this.kind = kind;
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66 this.exceptions = exceptions;
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67 this.index = template.getNaturalOrder();
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69 for (SpecializationThrowsData exception : exceptions) {
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70 exception.setSpecialization(this);
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71 }
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72 }
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73
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74 public boolean isCacheBoundByGuard(CacheExpression cacheExpression) {
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75 for (GuardExpression expression : getGuards()) {
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76 if (expression.getExpression().findBoundVariableElements().contains(cacheExpression.getParameter().getVariableElement())) {
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77 return true;
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78 }
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79 }
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80
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81 // check all next binding caches if they are bound by guard
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82 Set<VariableElement> boundVariables = cacheExpression.getExpression().findBoundVariableElements();
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83 boolean found = false;
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84 for (CacheExpression expression : getCaches()) {
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85 if (cacheExpression == expression) {
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86 found = true;
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87 } else if (found) {
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88 if (boundVariables.contains(expression.getParameter().getVariableElement())) {
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89 if (isCacheBoundByGuard(expression)) {
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90 return true;
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91 }
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92 }
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93 }
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94 }
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95 return false;
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96 }
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97
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98 public void setKind(SpecializationKind kind) {
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99 this.kind = kind;
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100 }
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101
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102 public boolean isDynamicParameterBound(DSLExpression expression) {
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103 Set<VariableElement> boundVariables = expression.findBoundVariableElements();
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104 for (Parameter parameter : getDynamicParameters()) {
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105 if (boundVariables.contains(parameter.getVariableElement())) {
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106 return true;
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107 }
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108 }
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109 return false;
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110 }
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111
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112 public Parameter findByVariable(VariableElement variable) {
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113 for (Parameter parameter : getParameters()) {
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114 if (ElementUtils.variableEquals(parameter.getVariableElement(), variable)) {
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115 return parameter;
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116 }
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117 }
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118 return null;
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119 }
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120
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121 public DSLExpression getLimitExpression() {
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122 return limitExpression;
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123 }
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124
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125 public void setLimitExpression(DSLExpression limitExpression) {
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126 this.limitExpression = limitExpression;
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127 }
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128
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129 public void setInsertBefore(SpecializationData insertBefore) {
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130 this.insertBefore = insertBefore;
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131 }
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132
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133 public void setInsertBeforeName(String insertBeforeName) {
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134 this.insertBeforeName = insertBeforeName;
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135 }
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136
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137 public SpecializationData getInsertBefore() {
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138 return insertBefore;
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139 }
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140
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141 public String getInsertBeforeName() {
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142 return insertBeforeName;
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143 }
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144
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145 public Set<String> getContainsNames() {
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146 return containsNames;
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147 }
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148
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149 public SpecializationData(NodeData node, TemplateMethod template, SpecializationKind kind) {
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150 this(node, template, kind, new ArrayList<SpecializationThrowsData>());
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151 }
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152
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153 public Set<SpecializationData> getContains() {
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154 return contains;
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155 }
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156
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157 public Set<SpecializationData> getExcludedBy() {
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158 return excludedBy;
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159 }
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160
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161 public void setReachable(boolean reachable) {
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162 this.reachable = reachable;
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163 }
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164
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165 public boolean isReachable() {
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166 return reachable;
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167 }
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168
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169 public boolean isPolymorphic() {
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170 return kind == SpecializationKind.POLYMORPHIC;
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171 }
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172
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173 @Override
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174 protected List<MessageContainer> findChildContainers() {
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175 List<MessageContainer> sinks = new ArrayList<>();
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176 if (exceptions != null) {
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177 sinks.addAll(exceptions);
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178 }
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179 if (guards != null) {
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180 sinks.addAll(guards);
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181 }
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182 if (caches != null) {
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183 sinks.addAll(caches);
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184 }
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185 if (assumptionExpressions != null) {
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186 sinks.addAll(assumptionExpressions);
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187 }
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188 return sinks;
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189 }
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190
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191 public boolean hasRewrite(ProcessorContext context) {
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192 if (!getExceptions().isEmpty()) {
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193 return true;
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194 }
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195 if (!getGuards().isEmpty()) {
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196 return true;
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197 }
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198 if (!getAssumptionExpressions().isEmpty()) {
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199 return true;
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200 }
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201
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202 for (Parameter parameter : getSignatureParameters()) {
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203 NodeChildData child = parameter.getSpecification().getExecution().getChild();
20938
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204 if (child != null) {
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205 ExecutableTypeData type = child.findExecutableType(parameter.getType());
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206 if (type == null) {
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207 type = child.findAnyGenericExecutableType(context);
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208 }
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diff changeset
209 if (type.hasUnexpectedValue(context)) {
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210 return true;
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211 }
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diff changeset
212 if (ElementUtils.needsCastTo(type.getReturnType(), parameter.getType())) {
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213 return true;
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214 }
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215 }
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216 }
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217 return false;
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218 }
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219
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220 @Override
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221 public int compareTo(TemplateMethod other) {
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222 if (this == other) {
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223 return 0;
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224 } else if (!(other instanceof SpecializationData)) {
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diff changeset
225 return super.compareTo(other);
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226 }
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227 SpecializationData m2 = (SpecializationData) other;
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228 int kindOrder = kind.compareTo(m2.kind);
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diff changeset
229 if (kindOrder != 0) {
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230 return kindOrder;
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231 }
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232
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233 int compare = 0;
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234 int order1 = index;
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diff changeset
235 int order2 = m2.index;
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diff changeset
236 if (order1 != NO_NATURAL_ORDER && order2 != NO_NATURAL_ORDER) {
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diff changeset
237 compare = Integer.compare(order1, order2);
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diff changeset
238 if (compare != 0) {
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diff changeset
239 return compare;
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diff changeset
240 }
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241 }
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242
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243 return super.compareTo(other);
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244 }
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245
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246 public void setIndex(int order) {
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247 this.index = order;
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248 }
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249
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250 public int getIndex() {
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251 return index;
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252 }
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253
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254 public NodeData getNode() {
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255 return node;
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256 }
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257
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258 public void setGuards(List<GuardExpression> guards) {
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259 this.guards = guards;
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260 }
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261
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262 public boolean isSpecialized() {
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263 return kind == SpecializationKind.SPECIALIZED;
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264 }
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265
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266 public boolean isFallback() {
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267 return kind == SpecializationKind.FALLBACK;
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268 }
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269
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270 public boolean isUninitialized() {
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271 return kind == SpecializationKind.UNINITIALIZED;
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272 }
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273
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274 public List<SpecializationThrowsData> getExceptions() {
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275 return exceptions;
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276 }
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277
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278 public List<GuardExpression> getGuards() {
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279 return guards;
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280 }
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281
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282 public void setShortCircuits(List<ShortCircuitData> shortCircuits) {
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283 this.shortCircuits = shortCircuits;
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284 }
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285
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286 public List<ShortCircuitData> getShortCircuits() {
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287 return shortCircuits;
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288 }
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289
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290 public SpecializationData findNextSpecialization() {
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291 List<SpecializationData> specializations = node.getSpecializations();
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292 for (int i = 0; i < specializations.size() - 1; i++) {
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293 if (specializations.get(i) == this) {
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294 return specializations.get(i + 1);
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295 }
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296 }
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297 return null;
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298 }
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299
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300 @Override
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301 public String toString() {
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302 return String.format("%s [id = %s, method = %s, guards = %s, signature = %s]", getClass().getSimpleName(), getId(), getMethod(), getGuards(), getDynamicTypes());
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303 }
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304
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305 public boolean isFrameUsed() {
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306 return getFrame() != null;
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307 }
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308
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309 public List<CacheExpression> getCaches() {
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310 return caches;
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311 }
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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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312
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313 public void setCaches(List<CacheExpression> caches) {
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314 this.caches = caches;
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315 }
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316
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317 public void setAssumptionExpressions(List<AssumptionExpression> assumptionExpressions) {
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318 this.assumptionExpressions = assumptionExpressions;
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319 }
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320
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321 public List<AssumptionExpression> getAssumptionExpressions() {
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322 return assumptionExpressions;
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980db6c0bcd3 Truffle-DSL: fixed invalid @SlowPath on generic execute methods. (GRAAL-490 #resolve)
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diff changeset
323 }
13527
25ecb47a6d0e Truffle-DSL: Added support for references to child arrays in @ShortCircuit;
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324
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diff changeset
325 public boolean hasMultipleInstances() {
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326 if (!getCaches().isEmpty()) {
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diff changeset
327 for (GuardExpression guard : getGuards()) {
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diff changeset
328 DSLExpression guardExpression = guard.getExpression();
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diff changeset
329 Set<VariableElement> boundVariables = guardExpression.findBoundVariableElements();
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diff changeset
330 if (isDynamicParameterBound(guardExpression)) {
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331 for (CacheExpression cache : getCaches()) {
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diff changeset
332 if (boundVariables.contains(cache.getParameter().getVariableElement())) {
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333 return true;
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334 }
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335 }
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336 }
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337 }
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338 }
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339 return false;
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340 }
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341
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342 public boolean isReachableAfter(SpecializationData prev) {
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343 if (!prev.isSpecialized()) {
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344 return true;
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345 }
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346
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347 if (!prev.getExceptions().isEmpty()) {
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diff changeset
348 // may get excluded by exception
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349 return true;
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350 }
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351
62c43fcf5be2 Truffle-DSL: implement @Cached and fixes for the new guard expression syntax.
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diff changeset
352 if (hasMultipleInstances()) {
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diff changeset
353 // may fallthrough due to limit
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354 return true;
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diff changeset
355 }
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diff changeset
356
16759
23415229349b Truffle-DSL: new package structure.
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diff changeset
357 Iterator<Parameter> currentSignature = getSignatureParameters().iterator();
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diff changeset
358 Iterator<Parameter> prevSignature = prev.getSignatureParameters().iterator();
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diff changeset
359
20938
18c0f02fa4d2 Truffle-DSL: make type systems optional.
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diff changeset
360 TypeSystemData typeSystem = prev.getNode().getTypeSystem();
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diff changeset
361 while (currentSignature.hasNext() && prevSignature.hasNext()) {
20938
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diff changeset
362 TypeMirror currentType = currentSignature.next().getType();
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diff changeset
363 TypeMirror prevType = prevSignature.next().getType();
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diff changeset
364
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365 if (!typeSystem.isImplicitSubtypeOf(currentType, prevType)) {
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366 return true;
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parents: 14908
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367 }
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368 }
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369
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370 if (!prev.getAssumptionExpressions().isEmpty()) {
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371 // TODO: chumer: we could at least check reachability after trivial assumptions
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372 // not sure if this is worth it.
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373 return true;
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374 }
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parents: 14908
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375
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376 Iterator<GuardExpression> prevGuards = prev.getGuards().iterator();
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parents: 14908
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377 Iterator<GuardExpression> currentGuards = getGuards().iterator();
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378 while (prevGuards.hasNext()) {
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379 GuardExpression prevGuard = prevGuards.next();
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parents: 14908
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380 GuardExpression currentGuard = currentGuards.hasNext() ? currentGuards.next() : null;
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parents: 14908
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381 if (currentGuard == null || !currentGuard.implies(prevGuard)) {
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382 return true;
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383 }
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parents: 14908
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384 }
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parents: 14908
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385
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386 return false;
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parents: 14908
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387 }
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parents: 19283
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388
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389 public CacheExpression findCache(Parameter resolvedParameter) {
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390 for (CacheExpression cache : getCaches()) {
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parents: 19283
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391 if (cache.getParameter() == resolvedParameter) {
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parents: 19283
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392 return cache;
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parents: 19283
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393 }
62c43fcf5be2 Truffle-DSL: implement @Cached and fixes for the new guard expression syntax.
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parents: 19283
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394 }
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parents: 19283
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395 return null;
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parents: 19283
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396 }
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parents: 19283
diff changeset
397
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
398 }