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annotate graal/com.oracle.truffle.dsl.processor/src/com/oracle/truffle/dsl/processor/node/SpecializationData.java @ 13532:85b485b1e8e1

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Truffle-DSL: removed support for implicit parameters. not needed anymore.
author Christian Humer <christian.humer@gmail.com>
date Tue, 07 Jan 2014 20:06:27 +0100
parents 5a0c694ef735
children 8db6e76cb658
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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.node;
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24
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25 import java.util.*;
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27 import javax.lang.model.type.*;
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29 import com.oracle.truffle.api.dsl.*;
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30 import com.oracle.truffle.dsl.processor.*;
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31 import com.oracle.truffle.dsl.processor.template.*;
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32 import com.oracle.truffle.dsl.processor.typesystem.*;
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33
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34 public class SpecializationData extends TemplateMethod {
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35
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36 public enum SpecializationKind {
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37 UNINITIALIZED, SPECIALIZED, POLYMORPHIC, GENERIC
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38 }
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39
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40 private final NodeData node;
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41 private final int order;
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42 private final SpecializationKind kind;
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43 private final List<SpecializationThrowsData> exceptions;
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44 private List<String> guardDefinitions = Collections.emptyList();
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45 private List<GuardData> guards = Collections.emptyList();
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46 private List<ShortCircuitData> shortCircuits;
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47 private List<String> assumptions = Collections.emptyList();
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48 private boolean reachable;
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49
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50 public SpecializationData(NodeData node, TemplateMethod template, SpecializationKind kind, int order, List<SpecializationThrowsData> exceptions) {
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51 super(template);
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52 this.node = node;
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53 this.order = order;
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54 this.kind = kind;
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55 this.exceptions = exceptions;
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56
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57 for (SpecializationThrowsData exception : exceptions) {
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58 exception.setSpecialization(this);
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59 }
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60 }
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61
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62 public SpecializationData(NodeData node, TemplateMethod template, SpecializationKind kind) {
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63 this(node, template, kind, Specialization.DEFAULT_ORDER, new ArrayList<SpecializationThrowsData>());
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64 }
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65
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66 public void setReachable(boolean reachable) {
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67 this.reachable = reachable;
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68 }
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69
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70 public boolean isReachable() {
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71 return reachable;
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72 }
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73
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74 public boolean isPolymorphic() {
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75 return kind == SpecializationKind.POLYMORPHIC;
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76 }
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77
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78 @Override
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79 protected List<MessageContainer> findChildContainers() {
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80 List<MessageContainer> sinks = new ArrayList<>();
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81 if (exceptions != null) {
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82 sinks.addAll(exceptions);
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83 }
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84 if (guards != null) {
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85 sinks.addAll(guards);
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86 }
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87 return sinks;
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88 }
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89
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90 public boolean isGenericSpecialization(ProcessorContext context) {
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91 if (isGeneric()) {
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92 return true;
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93 }
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94 if (hasRewrite(context)) {
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95 return false;
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96 }
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97
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98 for (ActualParameter parameter : getSignatureParameters()) {
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99 ActualParameter genericParameter = getNode().getGenericSpecialization().findParameter(parameter.getLocalName());
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100 if (!parameter.getTypeSystemType().equals(genericParameter.getTypeSystemType())) {
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101 return false;
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102 }
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103 }
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104 return true;
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105 }
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106
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107 public boolean hasRewrite(ProcessorContext context) {
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108 if (!getExceptions().isEmpty()) {
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109 return true;
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110 }
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111 if (!getGuards().isEmpty()) {
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112 return true;
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113 }
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114 if (!getAssumptions().isEmpty()) {
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115 return true;
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116 }
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117 for (ActualParameter parameter : getSignatureParameters()) {
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118 ExecutableTypeData type = parameter.getSpecification().getExecution().getChild().findExecutableType(context, parameter.getTypeSystemType());
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119 if (type.hasUnexpectedValue(context)) {
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120 return true;
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121 }
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122 if (type.getReturnType().getTypeSystemType().needsCastTo(context, parameter.getTypeSystemType())) {
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123 return true;
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124 }
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125
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126 }
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127 return false;
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128 }
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129
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130 @Override
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131 public int compareBySignature(TemplateMethod other) {
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132 if (this == other) {
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133 return 0;
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134 } else if (!(other instanceof SpecializationData)) {
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135 return super.compareBySignature(other);
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136 }
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137
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138 SpecializationData m2 = (SpecializationData) other;
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139
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140 int kindOrder = kind.compareTo(m2.kind);
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141 if (kindOrder != 0) {
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142 return kindOrder;
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143 }
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144 if (getOrder() != Specialization.DEFAULT_ORDER && m2.getOrder() != Specialization.DEFAULT_ORDER) {
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145 return getOrder() - m2.getOrder();
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146 }
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147
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148 if (getTemplate() != m2.getTemplate()) {
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149 throw new UnsupportedOperationException("Cannot compare two specializations with different templates.");
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150 }
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151
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152 return super.compareBySignature(m2);
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153 }
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154
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155 public NodeData getNode() {
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156 return node;
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157 }
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158
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159 public void setGuards(List<GuardData> guards) {
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160 this.guards = guards;
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161 }
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162
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163 public void setGuardDefinitions(List<String> guardDefinitions) {
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164 this.guardDefinitions = guardDefinitions;
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165 }
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166
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167 public int getOrder() {
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168 return order;
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169 }
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170
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171 public boolean isSpecialized() {
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172 return kind == SpecializationKind.SPECIALIZED;
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173 }
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174
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175 public boolean isGeneric() {
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176 return kind == SpecializationKind.GENERIC;
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177 }
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178
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179 public boolean isUninitialized() {
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180 return kind == SpecializationKind.UNINITIALIZED;
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181 }
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182
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183 public List<SpecializationThrowsData> getExceptions() {
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184 return exceptions;
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185 }
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186
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187 public List<String> getGuardDefinitions() {
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188 return guardDefinitions;
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189 }
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190
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191 public List<GuardData> getGuards() {
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192 return guards;
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193 }
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194
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195 public void setShortCircuits(List<ShortCircuitData> shortCircuits) {
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196 this.shortCircuits = shortCircuits;
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197 }
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198
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199 public List<ShortCircuitData> getShortCircuits() {
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200 return shortCircuits;
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201 }
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202
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203 public List<String> getAssumptions() {
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204 return assumptions;
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205 }
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206
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207 void setAssumptions(List<String> assumptions) {
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208 this.assumptions = assumptions;
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209 }
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210
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211 public SpecializationData findPreviousSpecialization() {
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212 List<SpecializationData> specializations = node.getSpecializations();
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213 for (int i = 0; i < specializations.size() - 1; i++) {
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214 if (specializations.get(i) == this && i > 0) {
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215 return specializations.get(i - 1);
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216 }
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217 }
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218 return null;
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219 }
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220
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221 public SpecializationData findNextSpecialization() {
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222 List<SpecializationData> specializations = node.getSpecializations();
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223 for (int i = 0; i < specializations.size() - 1; i++) {
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224 if (specializations.get(i) == this) {
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225 return specializations.get(i + 1);
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226 }
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227 }
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228 return null;
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229 }
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230
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231 public boolean hasDynamicGuards() {
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232 return !getGuards().isEmpty();
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233 }
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234
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235 @Override
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236 public String toString() {
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237 return String.format("%s [id = %s, method = %s, guards = %s, signature = %s]", getClass().getSimpleName(), getId(), getMethod(), getGuards(), getTypeSignature());
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238 }
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239
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240 public void forceFrame(TypeMirror frameType) {
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241 if (getParameters().isEmpty() || !Utils.typeEquals(getParameters().get(0).getType(), frameType)) {
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242 ParameterSpec frameSpec = getSpecification().findParameterSpec("frame");
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243 if (frameSpec != null) {
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244 getParameters().add(0, new ActualParameter(frameSpec, frameType, -1, -1));
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245 }
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246 }
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247 }
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248
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249 public boolean equalsGuards(SpecializationData specialization) {
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250 if (assumptions.equals(specialization.getAssumptions()) && guards.equals(specialization.getGuards()) && getTypeSignature().equalsParameters(specialization.getTypeSignature())) {
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251 return true;
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252 }
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253 return false;
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254 }
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255
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256 public boolean hasFrame(ProcessorContext context) {
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257 for (ActualParameter param : getParameters()) {
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258 if (Utils.typeEquals(param.getType(), context.getTruffleTypes().getFrame())) {
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259 return true;
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260 }
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261 }
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262 return false;
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263 }
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264
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265 }