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annotate graal/com.oracle.truffle.codegen.processor/src/com/oracle/truffle/codegen/processor/node/SpecializationData.java @ 9279:2a4b57f02fb4

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Implemented basic support for assumptions for sourcecode generation.
author Christian Humer <christian.humer@gmail.com>
date Wed, 24 Apr 2013 17:44:15 +0200
parents 97ad6d3e7557
children 8e3a1635cc9e
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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.codegen.processor.node;
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24
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25 import java.util.*;
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26
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27 import com.oracle.truffle.api.codegen.*;
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28 import com.oracle.truffle.codegen.processor.*;
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29 import com.oracle.truffle.codegen.processor.template.*;
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30 import com.oracle.truffle.codegen.processor.typesystem.*;
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31
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32 public class SpecializationData extends TemplateMethod {
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33
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34 private final int order;
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35 private final boolean generic;
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36 private final boolean uninitialized;
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37 private final List<SpecializationThrowsData> exceptions;
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38 private List<String> guardDefinitions = Collections.emptyList();
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39 private List<GuardData> guards = Collections.emptyList();
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40 private List<ShortCircuitData> shortCircuits;
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41 private List<String> assumptions = Collections.emptyList();
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42 private boolean useSpecializationsForGeneric = true;
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43 private NodeData node;
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44
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45 public SpecializationData(TemplateMethod template, int order, List<SpecializationThrowsData> exceptions) {
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46 super(template);
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47 this.order = order;
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48 this.generic = false;
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49 this.uninitialized = false;
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50 this.exceptions = exceptions;
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51
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52 for (SpecializationThrowsData exception : exceptions) {
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53 exception.setSpecialization(this);
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54 }
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55 }
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56
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57 public SpecializationData(TemplateMethod template, boolean generic, boolean uninitialized) {
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58 super(template);
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59 this.order = Specialization.DEFAULT_ORDER;
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60 this.generic = generic;
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61 this.uninitialized = uninitialized;
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62 this.exceptions = Collections.emptyList();
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63 }
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64
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65 @Override
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66 protected List<MessageContainer> findChildContainers() {
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67 List<MessageContainer> sinks = new ArrayList<>();
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68 if (exceptions != null) {
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69 sinks.addAll(exceptions);
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70 }
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71 if (guards != null) {
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72 sinks.addAll(guards);
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73 }
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74 return sinks;
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75 }
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76
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77 public boolean hasRewrite(ProcessorContext context) {
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78 if (!getExceptions().isEmpty()) {
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79 return true;
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80 }
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81 if (!getGuards().isEmpty()) {
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82 return true;
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83 }
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84 if (!getAssumptions().isEmpty()) {
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85 return true;
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86 }
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87 for (ActualParameter parameter : getParameters()) {
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88 NodeChildData field = getNode().findChild(parameter.getSpecification().getName());
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89 if (field == null) {
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90 continue;
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91 }
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92 ExecutableTypeData type = field.getNodeData().findExecutableType(parameter.getTypeSystemType());
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93 if (type.hasUnexpectedValue(context)) {
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94 return true;
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95 }
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96 }
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97 return false;
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98 }
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99
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100 @Override
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101 public int compareBySignature(TemplateMethod other) {
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102 if (this == other) {
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103 return 0;
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104 } else if (!(other instanceof SpecializationData)) {
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105 return super.compareBySignature(other);
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106 }
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107
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108 SpecializationData m2 = (SpecializationData) other;
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109
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110 if (getOrder() != Specialization.DEFAULT_ORDER && m2.getOrder() != Specialization.DEFAULT_ORDER) {
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111 return getOrder() - m2.getOrder();
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112 } else if (isUninitialized() ^ m2.isUninitialized()) {
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113 return isUninitialized() ? -1 : 1;
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114 } else if (isGeneric() ^ m2.isGeneric()) {
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115 return isGeneric() ? 1 : -1;
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116 }
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117
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118 if (getTemplate() != m2.getTemplate()) {
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119 throw new UnsupportedOperationException("Cannot compare two specializations with different templates.");
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120 }
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121
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122 return super.compareBySignature(m2);
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123 }
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124
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125 public NodeData getNode() {
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126 return node;
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127 }
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128
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129 public void setNode(NodeData node) {
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130 this.node = node;
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131 }
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132
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133 public void setGuards(List<GuardData> guards) {
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134 this.guards = guards;
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135 }
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136
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137 public void setGuardDefinitions(List<String> guardDefinitions) {
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138 this.guardDefinitions = guardDefinitions;
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139 }
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140
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141 public int getOrder() {
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142 return order;
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143 }
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144
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145 public boolean isGeneric() {
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146 return generic;
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147 }
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148
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149 public boolean isUninitialized() {
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150 return uninitialized;
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151 }
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152
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153 public List<SpecializationThrowsData> getExceptions() {
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154 return exceptions;
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155 }
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156
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157 public List<String> getGuardDefinitions() {
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158 return guardDefinitions;
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159 }
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160
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161 public List<GuardData> getGuards() {
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162 return guards;
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163 }
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164
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165 public void setShortCircuits(List<ShortCircuitData> shortCircuits) {
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166 this.shortCircuits = shortCircuits;
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167 }
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168
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169 public List<ShortCircuitData> getShortCircuits() {
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170 return shortCircuits;
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171 }
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172
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173 void setUseSpecializationsForGeneric(boolean useSpecializationsForGeneric) {
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174 this.useSpecializationsForGeneric = useSpecializationsForGeneric;
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175 }
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176
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177 public boolean isUseSpecializationsForGeneric() {
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178 return useSpecializationsForGeneric;
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179 }
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180
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181 public List<String> getAssumptions() {
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182 return assumptions;
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183 }
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184
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185 void setAssumptions(List<String> assumptions) {
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186 this.assumptions = assumptions;
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187 }
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188
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189 public SpecializationData findNextSpecialization() {
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190 List<SpecializationData> specializations = node.getSpecializations();
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191 for (int i = 0; i < specializations.size() - 1; i++) {
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192 if (specializations.get(i) == this) {
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193 return specializations.get(i + 1);
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194 }
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195 }
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196 return null;
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197 }
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198
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199 public boolean hasDynamicGuards() {
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200 return !getGuards().isEmpty();
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201 }
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202
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203 @Override
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204 public String toString() {
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205 return String.format("%s [id = %s, method = %s, guards = %s]", getClass().getSimpleName(), getId(), getMethod(), getGuards());
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206 }
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207
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208 }