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annotate graal/com.oracle.truffle.dsl.processor/src/com/oracle/truffle/dsl/processor/generator/ImplicitCastNodeFactory.java @ 20938:18c0f02fa4d2

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Truffle-DSL: make type systems optional.
author Christian Humer <christian.humer@gmail.com>
date Tue, 14 Apr 2015 15:12:48 +0200
parents a665483c3881
children b1530a6cce8c
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1 /*
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2 * Copyright (c) 2014, 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.generator;
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24
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25 import static com.oracle.truffle.dsl.processor.java.ElementUtils.*;
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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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29
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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.api.*;
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34 import com.oracle.truffle.api.CompilerDirectives.*;
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35 import com.oracle.truffle.api.dsl.internal.*;
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36 import com.oracle.truffle.api.nodes.*;
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37 import com.oracle.truffle.dsl.processor.*;
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38 import com.oracle.truffle.dsl.processor.java.*;
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39 import com.oracle.truffle.dsl.processor.java.model.*;
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40 import com.oracle.truffle.dsl.processor.model.*;
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41
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42 import static com.oracle.truffle.dsl.processor.generator.GeneratorUtils.*;
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43
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44 public class ImplicitCastNodeFactory {
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45
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46 private final ProcessorContext context;
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47 private final TypeMirror forType;
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48 private final TypeSystemData typeSystem;
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49 private final DSLOptions options;
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50 private final List<TypeMirror> sourceTypes;
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51
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52 public ImplicitCastNodeFactory(ProcessorContext context, TypeSystemData typeSystem, TypeMirror forType) {
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53 this.context = context;
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54 this.forType = forType;
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55 this.typeSystem = typeSystem;
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56 this.options = typeSystem.getOptions();
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57 this.sourceTypes = typeSystem.lookupSourceTypes(forType);
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58 }
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59
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60 public static String typeName(TypeMirror type) {
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61 return "Implicit" + getTypeId(type) + "Cast";
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62 }
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63
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64 public static TypeMirror type(TypeSystemData typeSystem, TypeMirror type) {
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65 String typeSystemName = TypeSystemCodeGenerator.typeName(typeSystem);
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66 return new GeneratedTypeMirror(ElementUtils.getPackageName(typeSystem.getTemplateType()) + "." + typeSystemName, typeName(type));
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67 }
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68
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69 public static CodeTree create(TypeSystemData typeSystem, TypeMirror type, CodeTree value) {
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70 return CodeTreeBuilder.createBuilder().startStaticCall(type(typeSystem, type), "create").tree(value).end().build();
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71 }
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72
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73 public static CodeTree cast(String nodeName, CodeTree value) {
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74 return CodeTreeBuilder.createBuilder().startCall(nodeName, "cast").tree(value).end().build();
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75 }
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76
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77 public static CodeTree check(String nodeName, CodeTree value) {
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78 return CodeTreeBuilder.createBuilder().startCall(nodeName, "check").tree(value).end().build();
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79 }
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80
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81 private static String seenFieldName(TypeMirror type) {
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82 return "seen" + getTypeId(type);
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83 }
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84
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85 public CodeTypeElement create() {
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86 String typeName = typeName(forType);
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87 TypeMirror baseType = context.getType(Object.class);
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88 CodeTypeElement clazz = GeneratorUtils.createClass(typeSystem, null, modifiers(PUBLIC, FINAL, STATIC), typeName, baseType);
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89
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90 for (TypeMirror sourceType : sourceTypes) {
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91 CodeVariableElement hasSeen = new CodeVariableElement(modifiers(PUBLIC), context.getType(boolean.class), seenFieldName(sourceType));
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92 hasSeen.getAnnotationMirrors().add(new CodeAnnotationMirror(context.getDeclaredType(CompilationFinal.class)));
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93 clazz.add(hasSeen);
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94 }
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95
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96 clazz.add(createConstructor(clazz));
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97 if (isTypeBoxingOptimized(options.monomorphicTypeBoxingOptimization(), forType)) {
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98 clazz.add(createIsMonomorphic());
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99 }
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100 clazz.add(createCast(false));
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101 clazz.add(createCast(true));
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102 clazz.add(createCheck());
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103 clazz.add(createMerge(clazz));
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104 clazz.add(createCreate(clazz));
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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 Element createIsMonomorphic() {
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110 String methodName = "isMonomorphic";
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111 CodeExecutableElement method = new CodeExecutableElement(modifiers(PUBLIC), context.getType(boolean.class), methodName);
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112 CodeTreeBuilder builder = method.createBuilder();
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113 builder.startReturn();
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114 String operator = "";
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115 for (TypeMirror sourceType : sourceTypes) {
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116 builder.string(operator);
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117 builder.string(seenFieldName(sourceType));
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118 operator = " ^ ";
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119 }
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120 builder.end();
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121 return method;
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122 }
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123
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124 private static Element createConstructor(CodeTypeElement clazz) {
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125 return new CodeExecutableElement(modifiers(PRIVATE), null, clazz.getSimpleName().toString());
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126 }
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127
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128 private Element createCreate(CodeTypeElement clazz) {
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129 String methodName = "create";
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130 CodeExecutableElement method = new CodeExecutableElement(modifiers(PUBLIC, STATIC), clazz.asType(), methodName);
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131 method.addParameter(new CodeVariableElement(context.getType(Object.class), "value"));
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132 CodeTreeBuilder builder = method.createBuilder();
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133
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134 builder.declaration(clazz.asType(), "newCast", builder.create().startNew(clazz.asType()).end());
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135
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136 for (TypeMirror sourceType : sourceTypes) {
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137 String seenField = seenFieldName(sourceType);
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138 builder.startStatement();
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139 builder.string("newCast.").string(seenField).string(" = ").tree(TypeSystemCodeGenerator.check(typeSystem, sourceType, "value"));
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140 builder.end();
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141 }
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142 builder.startReturn().string("newCast").end();
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143 return method;
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144 }
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145
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146 private Element createMerge(CodeTypeElement clazz) {
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147 String methodName = "merge";
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148 CodeExecutableElement method = new CodeExecutableElement(modifiers(PUBLIC), context.getType(void.class), methodName);
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149 method.addParameter(new CodeVariableElement(clazz.asType(), "otherCast"));
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150 CodeTreeBuilder builder = method.createBuilder();
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151
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152 for (TypeMirror sourceType : sourceTypes) {
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153 String seenField = seenFieldName(sourceType);
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154 builder.startStatement();
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155 builder.string("this.").string(seenField).string(" |= ").string("otherCast.").string(seenField);
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156 builder.end();
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157 }
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158 return method;
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159 }
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160
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161 private Element createCheck() {
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162 String methodName = "check";
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163 CodeExecutableElement method = new CodeExecutableElement(modifiers(PUBLIC), context.getType(boolean.class), methodName);
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164 method.addParameter(new CodeVariableElement(context.getType(Object.class), "value"));
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165 CodeTreeBuilder builder = method.createBuilder();
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166
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167 boolean elseIf = false;
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168 for (TypeMirror sourceType : sourceTypes) {
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169 elseIf = builder.startIf(elseIf);
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170 builder.string(seenFieldName(sourceType)).string(" && ").tree(TypeSystemCodeGenerator.check(typeSystem, sourceType, "value"));
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171 builder.end();
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172 builder.startBlock().returnTrue().end();
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173 }
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174 builder.returnFalse();
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175 return method;
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176 }
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177
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178 private Element createCast(boolean expect) {
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179 String methodName = expect ? "expect" : "cast";
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180 CodeExecutableElement method = new CodeExecutableElement(modifiers(PUBLIC), forType, methodName);
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181 method.addParameter(new CodeVariableElement(context.getType(Object.class), "value"));
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182 if (expect) {
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183 method.getThrownTypes().add(context.getType(UnexpectedResultException.class));
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184 }
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185
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186 CodeTreeBuilder builder = method.createBuilder();
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187
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188 boolean elseIf = false;
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189 for (TypeMirror sourceType : sourceTypes) {
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190 elseIf = builder.startIf(elseIf);
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191 builder.string(seenFieldName(sourceType)).string(" && ").tree(TypeSystemCodeGenerator.check(typeSystem, sourceType, "value"));
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192 builder.end();
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193 builder.startBlock();
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194 builder.startReturn();
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195 CodeTree castTree = TypeSystemCodeGenerator.cast(typeSystem, sourceType, "value");
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196 ImplicitCastData cast = typeSystem.lookupCast(sourceType, forType);
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197 if (cast != null) {
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198 builder.tree(TypeSystemCodeGenerator.invokeImplicitCast(typeSystem, cast, castTree));
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199 } else {
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200 builder.tree(castTree);
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201 }
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202 builder.end();
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203 builder.end();
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204 }
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205 if (expect) {
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206 builder.startThrow().startNew(context.getType(UnexpectedResultException.class)).string("value").end().end();
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207 } else {
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208 builder.startStatement().startStaticCall(context.getType(CompilerDirectives.class), "transferToInterpreter").end().end();
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209 builder.startThrow().startNew(context.getType(AssertionError.class)).end().end();
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210 }
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211 return method;
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212 }
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213
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214 }