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annotate graal/com.oracle.truffle.dsl.processor/src/com/oracle/truffle/dsl/processor/node/SpecializationData.java @ 12395:8e8347ecabbc

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Truffle-DSL: implemented new polymorphic more compact generation strategy
author Christian Humer <christian.humer@gmail.com>
date Fri, 11 Oct 2013 20:05:55 +0200
parents b77721210bd6
children 980db6c0bcd3
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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 private final int order;
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37 private final boolean generic;
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38 private final boolean polymorphic;
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39 private final boolean uninitialized;
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40 private final List<SpecializationThrowsData> exceptions;
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41 private List<String> guardDefinitions = Collections.emptyList();
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42 private List<GuardData> guards = Collections.emptyList();
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43 private List<ShortCircuitData> shortCircuits;
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44 private List<String> assumptions = Collections.emptyList();
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45 private NodeData node;
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46 private boolean reachable;
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47
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48 public SpecializationData(TemplateMethod template, int order, List<SpecializationThrowsData> exceptions) {
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49 super(template);
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50 this.order = order;
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51 this.generic = false;
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52 this.uninitialized = false;
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53 this.polymorphic = false;
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54 this.exceptions = exceptions;
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55
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56 for (SpecializationThrowsData exception : exceptions) {
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57 exception.setSpecialization(this);
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58 }
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59 }
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60
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61 public SpecializationData(TemplateMethod template, boolean generic, boolean uninitialized, boolean polymorphic) {
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62 super(template);
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63 this.order = Specialization.DEFAULT_ORDER;
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64 this.generic = generic;
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65 this.uninitialized = uninitialized;
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66 this.polymorphic = polymorphic;
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67 this.exceptions = Collections.emptyList();
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68 }
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69
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70 public void setReachable(boolean reachable) {
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71 this.reachable = reachable;
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72 }
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73
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74 public boolean isReachable() {
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75 return reachable;
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76 }
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77
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78 public boolean isPolymorphic() {
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79 return polymorphic;
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80 }
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81
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82 @Override
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83 protected List<MessageContainer> findChildContainers() {
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84 List<MessageContainer> sinks = new ArrayList<>();
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85 if (exceptions != null) {
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86 sinks.addAll(exceptions);
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87 }
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88 if (guards != null) {
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89 sinks.addAll(guards);
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90 }
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91 return sinks;
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92 }
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93
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94 public boolean isGenericSpecialization(ProcessorContext context) {
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95 if (isGeneric()) {
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96 return true;
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97 }
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98 if (hasRewrite(context)) {
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99 return false;
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100 }
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101
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102 for (ActualParameter parameter : getParameters()) {
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103 if (!parameter.getSpecification().isSignature()) {
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104 continue;
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105 }
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106 NodeChildData child = getNode().findChild(parameter.getSpecification().getName());
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107 if (child == null) {
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108 continue;
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109 }
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110 ActualParameter genericParameter = getNode().getGenericSpecialization().findParameter(parameter.getLocalName());
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111 if (!parameter.getTypeSystemType().equals(genericParameter.getTypeSystemType())) {
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112 return false;
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113 }
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114 }
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115
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116 return true;
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117 }
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118
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119 public boolean hasRewrite(ProcessorContext context) {
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120 if (!getExceptions().isEmpty()) {
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121 return true;
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122 }
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123 if (!getGuards().isEmpty()) {
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124 return true;
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125 }
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126 if (!getAssumptions().isEmpty()) {
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127 return true;
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128 }
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129 for (ActualParameter parameter : getParameters()) {
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130 NodeChildData child = getNode().findChild(parameter.getSpecification().getName());
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131 if (child == null) {
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132 continue;
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133 }
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134 ExecutableTypeData type = child.findExecutableType(context, parameter.getTypeSystemType());
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135 if (type.hasUnexpectedValue(context)) {
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136 return true;
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137 }
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138 if (type.getReturnType().getTypeSystemType().needsCastTo(context, parameter.getTypeSystemType())) {
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139 return true;
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140 }
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141
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142 }
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143 return false;
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144 }
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145
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146 @Override
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147 public int compareBySignature(TemplateMethod other) {
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148 if (this == other) {
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149 return 0;
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150 } else if (!(other instanceof SpecializationData)) {
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151 return super.compareBySignature(other);
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152 }
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153
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154 SpecializationData m2 = (SpecializationData) other;
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155
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156 if (getOrder() != Specialization.DEFAULT_ORDER && m2.getOrder() != Specialization.DEFAULT_ORDER) {
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157 return getOrder() - m2.getOrder();
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158 } else if (isUninitialized() ^ m2.isUninitialized()) {
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159 return isUninitialized() ? -1 : 1;
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160 } else if (isGeneric() ^ m2.isGeneric()) {
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161 return isGeneric() ? 1 : -1;
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162 }
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163
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164 if (getTemplate() != m2.getTemplate()) {
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165 throw new UnsupportedOperationException("Cannot compare two specializations with different templates.");
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166 }
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167
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168 return super.compareBySignature(m2);
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169 }
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170
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171 public NodeData getNode() {
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172 return node;
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173 }
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174
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175 public void setNode(NodeData node) {
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176 this.node = node;
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177 }
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178
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179 public void setGuards(List<GuardData> guards) {
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180 this.guards = guards;
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181 }
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182
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183 public void setGuardDefinitions(List<String> guardDefinitions) {
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184 this.guardDefinitions = guardDefinitions;
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185 }
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186
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187 public int getOrder() {
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188 return order;
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189 }
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190
12395
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191 public boolean isSpecialized() {
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192 return !isGeneric() && !isUninitialized() && !isPolymorphic();
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193 }
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194
10597
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195 public boolean isGeneric() {
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196 return generic;
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197 }
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198
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199 public boolean isUninitialized() {
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200 return uninitialized;
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201 }
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202
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203 public List<SpecializationThrowsData> getExceptions() {
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204 return exceptions;
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205 }
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206
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207 public List<String> getGuardDefinitions() {
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208 return guardDefinitions;
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209 }
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210
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211 public List<GuardData> getGuards() {
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212 return guards;
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213 }
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214
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215 public void setShortCircuits(List<ShortCircuitData> shortCircuits) {
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216 this.shortCircuits = shortCircuits;
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217 }
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218
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219 public List<ShortCircuitData> getShortCircuits() {
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220 return shortCircuits;
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221 }
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222
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223 public List<String> getAssumptions() {
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224 return assumptions;
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225 }
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226
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227 void setAssumptions(List<String> assumptions) {
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228 this.assumptions = assumptions;
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229 }
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230
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231 public SpecializationData findPreviousSpecialization() {
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232 List<SpecializationData> specializations = node.getSpecializations();
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233 for (int i = 0; i < specializations.size() - 1; i++) {
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234 if (specializations.get(i) == this && i > 0) {
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235 return specializations.get(i - 1);
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236 }
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237 }
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238 return null;
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239 }
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240
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241 public SpecializationData findNextSpecialization() {
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242 List<SpecializationData> specializations = node.getSpecializations();
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243 for (int i = 0; i < specializations.size() - 1; i++) {
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244 if (specializations.get(i) == this) {
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245 return specializations.get(i + 1);
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246 }
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247 }
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248 return null;
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249 }
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250
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251 public boolean hasDynamicGuards() {
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252 return !getGuards().isEmpty();
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253 }
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254
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255 @Override
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256 public String toString() {
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257 return String.format("%s [id = %s, method = %s, guards = %s, signature = %s]", getClass().getSimpleName(), getId(), getMethod(), getGuards(), getSignature());
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258 }
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259
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260 public void forceFrame(TypeMirror frameType) {
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261 if (getParameters().isEmpty() || !Utils.typeEquals(getParameters().get(0).getType(), frameType)) {
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262 ParameterSpec frameSpec = getSpecification().findParameterSpec("frame");
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263 if (frameSpec != null) {
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264 getParameters().add(0, new ActualParameter(frameSpec, frameType, -1, false));
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265 }
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266 }
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267 }
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268
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269 public boolean equalsGuards(SpecializationData specialization) {
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270 if (assumptions.equals(specialization.getAssumptions()) && guards.equals(specialization.getGuards()) && getSignature().equalsParameters(specialization.getSignature())) {
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271 return true;
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272 }
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273 return false;
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274 }
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275 }