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annotate graal/com.oracle.truffle.dsl.processor/src/com/oracle/truffle/dsl/processor/model/SpecializationData.java @ 19283:08aa0372dad4

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Truffle-DSL: implement new guard expression syntax.
author Christian Humer <christian.humer@gmail.com>
date Fri, 23 Jan 2015 02:55:23 +0100
parents c0fb70634640
children 62c43fcf5be2
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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
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31 public final class SpecializationData extends TemplateMethod {
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32
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33 public enum SpecializationKind {
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34 UNINITIALIZED,
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35 SPECIALIZED,
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36 POLYMORPHIC,
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37 FALLBACK
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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 SpecializationKind kind;
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42 private final List<SpecializationThrowsData> exceptions;
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43 private List<GuardExpression> guards = Collections.emptyList();
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44 private List<CacheExpression> caches = Collections.emptyList();
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45 private List<AssumptionExpression> assumptionExpressions = 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 final Set<SpecializationData> contains = new TreeSet<>();
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49 private final Set<String> containsNames = new TreeSet<>();
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50 private final Set<SpecializationData> excludedBy = new TreeSet<>();
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51 private String insertBeforeName;
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52 private SpecializationData insertBefore;
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53 private boolean reachable;
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54 private int index;
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55
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56 public SpecializationData(NodeData node, TemplateMethod template, SpecializationKind kind, List<SpecializationThrowsData> exceptions) {
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57 super(template);
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58 this.node = node;
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59 this.kind = kind;
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60 this.exceptions = exceptions;
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61 this.index = template.getNaturalOrder();
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62
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63 for (SpecializationThrowsData exception : exceptions) {
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64 exception.setSpecialization(this);
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65 }
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66 }
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67
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68 public Parameter findByVariable(VariableElement variable) {
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69 for (Parameter parameter : getParameters()) {
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70 if (parameter.getVariableElement() == variable) {
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71 return parameter;
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72 }
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73 }
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74 return null;
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75 }
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76
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77 public void setInsertBefore(SpecializationData insertBefore) {
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78 this.insertBefore = insertBefore;
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79 }
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80
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81 public void setInsertBeforeName(String insertBeforeName) {
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82 this.insertBeforeName = insertBeforeName;
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83 }
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84
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85 public SpecializationData getInsertBefore() {
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86 return insertBefore;
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87 }
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88
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89 public String getInsertBeforeName() {
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90 return insertBeforeName;
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91 }
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92
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93 public Set<String> getContainsNames() {
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94 return containsNames;
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95 }
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96
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97 public SpecializationData(NodeData node, TemplateMethod template, SpecializationKind kind) {
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98 this(node, template, kind, new ArrayList<SpecializationThrowsData>());
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99 }
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100
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101 public Set<SpecializationData> getContains() {
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102 return contains;
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103 }
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104
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105 public Set<SpecializationData> getExcludedBy() {
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106 return excludedBy;
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107 }
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109 public void setReachable(boolean reachable) {
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110 this.reachable = reachable;
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111 }
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113 public boolean isReachable() {
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114 return reachable;
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115 }
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117 public boolean isPolymorphic() {
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118 return kind == SpecializationKind.POLYMORPHIC;
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119 }
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120
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121 @Override
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122 protected List<MessageContainer> findChildContainers() {
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123 List<MessageContainer> sinks = new ArrayList<>();
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124 if (exceptions != null) {
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125 sinks.addAll(exceptions);
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126 }
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127 if (guards != null) {
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128 sinks.addAll(guards);
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129 }
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130 return sinks;
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131 }
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132
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133 public boolean hasRewrite(ProcessorContext context) {
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134 if (!getExceptions().isEmpty()) {
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135 return true;
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136 }
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137 if (!getGuards().isEmpty()) {
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138 return true;
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139 }
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140 if (!getAssumptions().isEmpty()) {
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141 return true;
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142 }
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143 for (Parameter parameter : getSignatureParameters()) {
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144 NodeChildData child = parameter.getSpecification().getExecution().getChild();
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145 ExecutableTypeData type = child.findExecutableType(parameter.getTypeSystemType());
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146 if (type == null) {
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147 type = child.findAnyGenericExecutableType(context);
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148 }
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149 if (type.hasUnexpectedValue(context)) {
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150 return true;
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151 }
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152 if (type.getReturnType().getTypeSystemType().needsCastTo(parameter.getTypeSystemType())) {
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153 return true;
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154 }
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155
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156 }
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157 return false;
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158 }
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159
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160 @Override
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161 public int compareTo(TemplateMethod other) {
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162 if (this == other) {
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163 return 0;
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164 } else if (!(other instanceof SpecializationData)) {
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165 return super.compareTo(other);
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166 }
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167 SpecializationData m2 = (SpecializationData) other;
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168 int kindOrder = kind.compareTo(m2.kind);
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169 if (kindOrder != 0) {
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170 return kindOrder;
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171 }
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172
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173 int compare = 0;
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174 int order1 = index;
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175 int order2 = m2.index;
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176 if (order1 != NO_NATURAL_ORDER && order2 != NO_NATURAL_ORDER) {
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177 compare = Integer.compare(order1, order2);
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178 if (compare != 0) {
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179 return compare;
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180 }
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181 }
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182
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183 return super.compareTo(other);
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184 }
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185
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186 public void setIndex(int order) {
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187 this.index = order;
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188 }
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189
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190 public int getIndex() {
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191 return index;
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192 }
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193
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194 public boolean isContainedBy(SpecializationData next) {
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195 if (compareTo(next) > 0) {
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196 // must be declared after the current specialization
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197 return false;
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198 }
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199
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200 Iterator<Parameter> currentSignature = getSignatureParameters().iterator();
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201 Iterator<Parameter> nextSignature = next.getSignatureParameters().iterator();
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202
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203 while (currentSignature.hasNext() && nextSignature.hasNext()) {
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204 TypeData currentType = currentSignature.next().getTypeSystemType();
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205 TypeData prevType = nextSignature.next().getTypeSystemType();
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206
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207 if (!currentType.isImplicitSubtypeOf(prevType)) {
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208 return false;
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209 }
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210 }
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211
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212 for (String nextAssumption : next.getAssumptions()) {
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213 if (!getAssumptions().contains(nextAssumption)) {
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214 return false;
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215 }
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216 }
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217
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218 Iterator<GuardExpression> nextGuards = next.getGuards().iterator();
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219 while (nextGuards.hasNext()) {
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220 GuardExpression nextGuard = nextGuards.next();
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221 boolean implied = false;
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222 for (GuardExpression currentGuard : getGuards()) {
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223 if (currentGuard.implies(nextGuard)) {
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224 implied = true;
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225 break;
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226 }
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227 }
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228 if (!implied) {
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229 return false;
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230 }
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231 }
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232
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233 return true;
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234 }
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235
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236 public NodeData getNode() {
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237 return node;
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238 }
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239
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240 public void setGuards(List<GuardExpression> guards) {
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241 this.guards = guards;
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242 }
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243
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244 public boolean isSpecialized() {
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245 return kind == SpecializationKind.SPECIALIZED;
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246 }
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247
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248 public boolean isFallback() {
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249 return kind == SpecializationKind.FALLBACK;
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250 }
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251
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252 public boolean isUninitialized() {
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253 return kind == SpecializationKind.UNINITIALIZED;
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254 }
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255
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256 public List<SpecializationThrowsData> getExceptions() {
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257 return exceptions;
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258 }
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259
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260 public List<GuardExpression> getGuards() {
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261 return guards;
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262 }
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263
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264 public void setShortCircuits(List<ShortCircuitData> shortCircuits) {
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265 this.shortCircuits = shortCircuits;
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266 }
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267
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268 public List<ShortCircuitData> getShortCircuits() {
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269 return shortCircuits;
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270 }
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271
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272 public List<String> getAssumptions() {
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273 return assumptions;
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274 }
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275
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276 public void setAssumptions(List<String> assumptions) {
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277 this.assumptions = assumptions;
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278 }
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279
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280 public SpecializationData findNextSpecialization() {
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281 List<SpecializationData> specializations = node.getSpecializations();
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282 for (int i = 0; i < specializations.size() - 1; i++) {
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283 if (specializations.get(i) == this) {
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284 return specializations.get(i + 1);
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285 }
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286 }
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287 return null;
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288 }
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289
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290 @Override
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291 public String toString() {
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292 return String.format("%s [id = %s, method = %s, guards = %s, signature = %s]", getClass().getSimpleName(), getId(), getMethod(), getGuards(), getTypeSignature());
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293 }
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294
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295 public boolean isFrameUsed() {
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296 return getFrame() != null;
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297 }
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298
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299 public List<CacheExpression> getCaches() {
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300 return caches;
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301 }
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302
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303 public void setCaches(List<CacheExpression> caches) {
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304 this.caches = caches;
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305 }
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306
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307 public void setAssumptionExpressions(List<AssumptionExpression> assumptionExpressions) {
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308 this.assumptionExpressions = assumptionExpressions;
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309 }
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310
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311 public List<AssumptionExpression> getAssumptionExpressions() {
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312 return assumptionExpressions;
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313 }
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314
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315 public boolean isReachableAfter(SpecializationData prev) {
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316 if (!prev.isSpecialized()) {
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317 return true;
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318 }
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319
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320 if (!prev.getExceptions().isEmpty()) {
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321 return true;
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322 }
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323
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324 Iterator<Parameter> currentSignature = getSignatureParameters().iterator();
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325 Iterator<Parameter> prevSignature = prev.getSignatureParameters().iterator();
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326
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327 while (currentSignature.hasNext() && prevSignature.hasNext()) {
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328 TypeData currentType = currentSignature.next().getTypeSystemType();
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329 TypeData prevType = prevSignature.next().getTypeSystemType();
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330
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331 if (!currentType.isImplicitSubtypeOf(prevType)) {
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332 return true;
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333 }
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334 }
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335
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336 for (String prevAssumption : prev.getAssumptions()) {
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337 if (!getAssumptions().contains(prevAssumption)) {
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338 return true;
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339 }
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340 }
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341
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342 Iterator<GuardExpression> prevGuards = prev.getGuards().iterator();
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343 Iterator<GuardExpression> currentGuards = getGuards().iterator();
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344 while (prevGuards.hasNext()) {
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345 GuardExpression prevGuard = prevGuards.next();
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346 GuardExpression currentGuard = currentGuards.hasNext() ? currentGuards.next() : null;
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347 if (currentGuard == null || !currentGuard.implies(prevGuard)) {
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348 return true;
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349 }
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350 }
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351
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352 return false;
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353 }
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354 }