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annotate graal/com.oracle.truffle.dsl.processor/src/com/oracle/truffle/dsl/processor/typesystem/TypeSystemCodeGenerator.java @ 10597:79041ab43660

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Truffle-DSL: API-change: Renamed truffle.api.codegen to truffle.api.dsl for all projects and packages.
author Christian Humer <christian.humer@gmail.com>
date Mon, 01 Jul 2013 20:58:32 +0200
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children b7f90ff38d4b
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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.typesystem;
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24
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25 import static com.oracle.truffle.dsl.processor.Utils.*;
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26 import static javax.lang.model.element.Modifier.*;
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27
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28 import java.util.*;
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30 import javax.lang.model.element.*;
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31 import javax.lang.model.type.*;
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32
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33 import com.oracle.truffle.dsl.processor.*;
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34 import com.oracle.truffle.dsl.processor.ast.*;
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35 import com.oracle.truffle.dsl.processor.template.*;
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36
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37 public class TypeSystemCodeGenerator extends CompilationUnitFactory<TypeSystemData> {
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38
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39 public TypeSystemCodeGenerator(ProcessorContext context) {
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40 super(context);
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41 }
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42
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43 public static String isTypeMethodName(TypeData type) {
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44 return "is" + Utils.getTypeId(type.getBoxedType());
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45 }
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47 public static String asTypeMethodName(TypeData type) {
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48 return "as" + Utils.getTypeId(type.getBoxedType());
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49 }
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50
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51 public static String expectTypeMethodName(TypeData type) {
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52 return "expect" + Utils.getTypeId(type.getBoxedType());
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53 }
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54
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55 /**
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56 * Finds the generated singleton field for a TypeSytemData instance. TypeSystemCodeGenerator
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57 * must be applied to the TypeSystemData model before use.
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58 */
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59 public static VariableElement findSingleton(ProcessorContext context, TypeSystemData typeSystem) {
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60 TypeMirror type = context.findGeneratedClassBySimpleName(TypeClassFactory.typeName(typeSystem), typeSystem);
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61 return Utils.findDeclaredField(type, TypeClassFactory.singletonName(typeSystem.getTemplateType().asType()));
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62 }
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63
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64 @Override
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65 protected void createChildren(TypeSystemData m) {
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66 add(new TypeClassFactory(context), m);
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67 }
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68
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69 protected static class TypeClassFactory extends ClassElementFactory<TypeSystemData> {
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70
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71 private static final String LOCAL_VALUE = "value";
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72
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73 public TypeClassFactory(ProcessorContext context) {
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74 super(context);
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75 }
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76
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77 @Override
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78 public CodeTypeElement create(TypeSystemData typeSystem) {
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79 String name = typeName(typeSystem);
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80 CodeTypeElement clazz = createClass(typeSystem, modifiers(PUBLIC), name, typeSystem.getTemplateType().asType(), false);
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81
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82 clazz.add(createConstructorUsingFields(modifiers(PROTECTED), clazz));
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83 CodeVariableElement singleton = createSingleton(clazz);
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84 clazz.add(singleton);
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85
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86 for (TypeData type : typeSystem.getTypes()) {
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87 if (!type.isGeneric()) {
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88 CodeExecutableElement isType = createIsTypeMethod(type);
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89 if (isType != null) {
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90 clazz.add(isType);
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91 }
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92 CodeExecutableElement asType = createAsTypeMethod(type);
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93 if (asType != null) {
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94 clazz.add(asType);
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95 }
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96
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97 for (TypeData sourceType : collectExpectSourceTypes(type)) {
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98 CodeExecutableElement expect = createExpectTypeMethod(type, sourceType);
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99 if (expect != null) {
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100 clazz.add(expect);
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101 }
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102 }
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103 }
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104 }
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105
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106 return clazz;
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107 }
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108
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109 private static List<TypeData> collectExpectSourceTypes(TypeData type) {
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110 Set<TypeData> sourceTypes = new HashSet<>();
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111 sourceTypes.add(type.getTypeSystem().getGenericTypeData());
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112 for (TypeCastData cast : type.getTypeCasts()) {
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113 sourceTypes.add(cast.getSourceType());
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114 }
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115 for (TypeCheckData cast : type.getTypeChecks()) {
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116 sourceTypes.add(cast.getCheckedType());
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117 }
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118 return new ArrayList<>(sourceTypes);
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119 }
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120
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121 private static String typeName(TypeSystemData typeSystem) {
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122 String name = getSimpleName(typeSystem.getTemplateType());
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123 return name + "Gen";
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124 }
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125
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126 private static String singletonName(TypeMirror type) {
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127 return createConstantName(getSimpleName(type));
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128 }
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129
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130 private CodeVariableElement createSingleton(CodeTypeElement clazz) {
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131 CodeVariableElement field = new CodeVariableElement(modifiers(PUBLIC, STATIC, FINAL), clazz.asType(), singletonName(getModel().getTemplateType().asType()));
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132 field.createInitBuilder().startNew(clazz.asType()).end();
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133 return field;
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134 }
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135
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136 private CodeExecutableElement createIsTypeMethod(TypeData type) {
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137 if (!type.getTypeChecks().isEmpty()) {
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138 return null;
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139 }
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140
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141 CodeExecutableElement method = new CodeExecutableElement(modifiers(PUBLIC), getContext().getType(boolean.class), TypeSystemCodeGenerator.isTypeMethodName(type));
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142 method.addParameter(new CodeVariableElement(getContext().getType(Object.class), LOCAL_VALUE));
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143
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144 CodeTreeBuilder body = method.createBuilder();
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145 body.startReturn().instanceOf(LOCAL_VALUE, type.getBoxedType()).end();
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146
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147 return method;
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148 }
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149
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150 private CodeExecutableElement createAsTypeMethod(TypeData type) {
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151 if (!type.getTypeCasts().isEmpty()) {
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152 return null;
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153 }
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154
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155 CodeExecutableElement method = new CodeExecutableElement(modifiers(PUBLIC), type.getPrimitiveType(), TypeSystemCodeGenerator.asTypeMethodName(type));
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156 method.addParameter(new CodeVariableElement(getContext().getType(Object.class), LOCAL_VALUE));
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157
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158 CodeTreeBuilder body = method.createBuilder();
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159 body.startAssert().startCall(isTypeMethodName(type)).string(LOCAL_VALUE).end().end();
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160 body.startReturn().cast(type.getPrimitiveType(), body.create().string(LOCAL_VALUE).getTree()).end();
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161
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162 return method;
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163 }
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164
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165 private CodeExecutableElement createExpectTypeMethod(TypeData expectedType, TypeData sourceType) {
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166 CodeExecutableElement method = new CodeExecutableElement(modifiers(PUBLIC), expectedType.getPrimitiveType(), TypeSystemCodeGenerator.expectTypeMethodName(expectedType));
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167 method.addParameter(new CodeVariableElement(sourceType.getPrimitiveType(), LOCAL_VALUE));
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168 method.addThrownType(getContext().getTruffleTypes().getUnexpectedValueException());
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169
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170 CodeTreeBuilder body = method.createBuilder();
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171 body.startIf().startCall(null, TypeSystemCodeGenerator.isTypeMethodName(expectedType)).string(LOCAL_VALUE).end().end().startBlock();
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172 body.startReturn().startCall(null, TypeSystemCodeGenerator.asTypeMethodName(expectedType)).string(LOCAL_VALUE).end().end();
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173 body.end(); // if-block
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174 body.startThrow().startNew(getContext().getTruffleTypes().getUnexpectedValueException()).string(LOCAL_VALUE).end().end();
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175
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176 return method;
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177 }
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178
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179 }
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180 }