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annotate graal/com.oracle.truffle.dsl.processor/src/com/oracle/truffle/dsl/processor/typesystem/TypeSystemCodeGenerator.java @ 11545:2fb276f5e3e9

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Truffle-DSL: implemented implicit casts.
author Christian Humer <christian.humer@gmail.com>
date Fri, 06 Sep 2013 16:16:40 +0200
parents b7f90ff38d4b
children 8e8347ecabbc
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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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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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46
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47 public static String isImplicitTypeMethodName(TypeData type) {
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48 return "isImplicit" + Utils.getTypeId(type.getBoxedType());
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49 }
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50
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51 public static String asTypeMethodName(TypeData type) {
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52 return "as" + Utils.getTypeId(type.getBoxedType());
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53 }
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54
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55 public static String asImplicitTypeMethodName(TypeData type) {
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56 return "asImplicit" + Utils.getTypeId(type.getBoxedType());
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57 }
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58
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59 public static String getImplicitClass(TypeData type) {
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60 return "getImplicit" + Utils.getTypeId(type.getBoxedType()) + "Class";
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61 }
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62
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63 public static String expectTypeMethodName(TypeData type) {
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64 return "expect" + Utils.getTypeId(type.getBoxedType());
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65 }
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66
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67 /**
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68 * Finds the generated singleton field for a TypeSytemData instance. TypeSystemCodeGenerator
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69 * must be applied to the TypeSystemData model before use.
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70 */
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71 public static VariableElement findSingleton(ProcessorContext context, TypeSystemData typeSystem) {
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72 TypeMirror type = context.findGeneratedClassBySimpleName(TypeClassFactory.typeName(typeSystem), typeSystem);
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73 return Utils.findDeclaredField(type, TypeClassFactory.singletonName(typeSystem.getTemplateType().asType()));
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74 }
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75
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76 @Override
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77 protected void createChildren(TypeSystemData m) {
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78 add(new TypeClassFactory(context), m);
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79 }
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81 protected static class TypeClassFactory extends ClassElementFactory<TypeSystemData> {
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82
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83 private static final String LOCAL_VALUE = "value";
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84
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85 public TypeClassFactory(ProcessorContext context) {
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86 super(context);
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87 }
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89 @Override
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90 public CodeTypeElement create(TypeSystemData typeSystem) {
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91 String name = typeName(typeSystem);
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92 CodeTypeElement clazz = createClass(typeSystem, modifiers(PUBLIC, FINAL), name, typeSystem.getTemplateType().asType(), false);
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93
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94 clazz.add(createConstructorUsingFields(modifiers(PROTECTED), clazz));
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95 CodeVariableElement singleton = createSingleton(clazz);
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96 clazz.add(singleton);
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97
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98 for (TypeData type : typeSystem.getTypes()) {
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99 if (!type.isGeneric()) {
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100 CodeExecutableElement isType = createIsTypeMethod(type);
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101 if (isType != null) {
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102 clazz.add(isType);
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103 }
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104 CodeExecutableElement asType = createAsTypeMethod(type);
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105 if (asType != null) {
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106 clazz.add(asType);
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107 }
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108
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109 for (TypeData sourceType : collectExpectSourceTypes(type)) {
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110 CodeExecutableElement expect = createExpectTypeMethod(type, sourceType);
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111 if (expect != null) {
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112 clazz.add(expect);
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113 }
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114 }
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115
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116 CodeExecutableElement asImplicit = createAsImplicitTypeMethod(type);
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117 if (asImplicit != null) {
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118 clazz.add(asImplicit);
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119 }
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120 CodeExecutableElement isImplicit = createIsImplicitTypeMethod(type);
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121 if (isImplicit != null) {
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122 clazz.add(isImplicit);
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123 }
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124
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125 CodeExecutableElement typeIndex = createGetTypeIndex(type);
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126 if (typeIndex != null) {
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127 clazz.add(typeIndex);
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128 }
10597
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129 }
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130 }
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131
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132 return clazz;
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133 }
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134
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135 private static List<TypeData> collectExpectSourceTypes(TypeData type) {
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136 Set<TypeData> sourceTypes = new HashSet<>();
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137 sourceTypes.add(type.getTypeSystem().getGenericTypeData());
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138 for (TypeCastData cast : type.getTypeCasts()) {
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139 sourceTypes.add(cast.getSourceType());
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140 }
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141 for (TypeCheckData cast : type.getTypeChecks()) {
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142 sourceTypes.add(cast.getCheckedType());
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143 }
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144 return new ArrayList<>(sourceTypes);
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145 }
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146
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147 private static String typeName(TypeSystemData typeSystem) {
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148 String name = getSimpleName(typeSystem.getTemplateType());
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149 return name + "Gen";
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150 }
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151
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152 private static String singletonName(TypeMirror type) {
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153 return createConstantName(getSimpleName(type));
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154 }
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155
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156 private CodeVariableElement createSingleton(CodeTypeElement clazz) {
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157 CodeVariableElement field = new CodeVariableElement(modifiers(PUBLIC, STATIC, FINAL), clazz.asType(), singletonName(getModel().getTemplateType().asType()));
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158 field.createInitBuilder().startNew(clazz.asType()).end();
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159 return field;
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160 }
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161
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162 private CodeExecutableElement createIsImplicitTypeMethod(TypeData type) {
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163 TypeSystemData typeSystem = getModel();
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164 List<ImplicitCastData> casts = typeSystem.lookupByTargetType(type);
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165 if (casts.isEmpty()) {
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166 return null;
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167 }
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168 CodeExecutableElement method = new CodeExecutableElement(modifiers(PUBLIC), getContext().getType(boolean.class), TypeSystemCodeGenerator.isImplicitTypeMethodName(type));
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169 method.addParameter(new CodeVariableElement(getContext().getType(Object.class), LOCAL_VALUE));
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170 CodeTreeBuilder builder = method.createBuilder();
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171
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172 List<TypeData> sourceTypes = typeSystem.lookupSourceTypes(type);
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173
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174 builder.startReturn();
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175 String sep = "";
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176 for (TypeData sourceType : sourceTypes) {
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177 builder.string(sep);
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178 builder.startCall(isTypeMethodName(sourceType)).string(LOCAL_VALUE).end();
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179 sep = " || ";
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180 }
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181 builder.end();
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182 return method;
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183 }
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184
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185 private CodeExecutableElement createAsImplicitTypeMethod(TypeData type) {
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186 TypeSystemData typeSystem = getModel();
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187 List<ImplicitCastData> casts = typeSystem.lookupByTargetType(type);
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188 if (casts.isEmpty()) {
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189 return null;
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190 }
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191 CodeExecutableElement method = new CodeExecutableElement(modifiers(PUBLIC), type.getPrimitiveType(), TypeSystemCodeGenerator.asImplicitTypeMethodName(type));
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192 method.addParameter(new CodeVariableElement(getContext().getType(Object.class), LOCAL_VALUE));
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193
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194 List<TypeData> sourceTypes = typeSystem.lookupSourceTypes(type);
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195
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196 CodeTreeBuilder builder = method.createBuilder();
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197 boolean elseIf = false;
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198 for (TypeData sourceType : sourceTypes) {
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199 elseIf = builder.startIf(elseIf);
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200 builder.startCall(isTypeMethodName(sourceType)).string(LOCAL_VALUE).end();
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201 builder.end().startBlock();
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202
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203 builder.startReturn();
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204 ImplicitCastData cast = typeSystem.lookupCast(sourceType, type);
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205 if (cast != null) {
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206 builder.startCall(cast.getMethodName());
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207 }
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208 builder.startCall(asTypeMethodName(sourceType)).string(LOCAL_VALUE).end();
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209 if (cast != null) {
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210 builder.end();
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211 }
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212 builder.end();
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213 builder.end();
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214 }
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215
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216 builder.startElseBlock();
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217 builder.startStatement().startStaticCall(getContext().getTruffleTypes().getCompilerDirectives(), "transferToInterpreter").end().end();
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218 builder.startThrow().startNew(getContext().getType(IllegalArgumentException.class)).doubleQuote("Illegal type ").end().end();
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219 builder.end();
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220 return method;
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221 }
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222
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223 private CodeExecutableElement createGetTypeIndex(TypeData type) {
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224 TypeSystemData typeSystem = getModel();
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225 List<ImplicitCastData> casts = typeSystem.lookupByTargetType(type);
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226 if (casts.isEmpty()) {
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227 return null;
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228 }
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229 CodeExecutableElement method = new CodeExecutableElement(modifiers(PUBLIC), getContext().getType(Class.class), TypeSystemCodeGenerator.getImplicitClass(type));
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230 method.addParameter(new CodeVariableElement(getContext().getType(Object.class), LOCAL_VALUE));
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231
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232 List<TypeData> sourceTypes = typeSystem.lookupSourceTypes(type);
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233 CodeTreeBuilder builder = method.createBuilder();
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234 boolean elseIf = false;
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235 for (TypeData sourceType : sourceTypes) {
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236 elseIf = builder.startIf(elseIf);
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237 builder.startCall(isTypeMethodName(sourceType)).string(LOCAL_VALUE).end();
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238 builder.end().startBlock();
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239 builder.startReturn().typeLiteral(sourceType.getPrimitiveType()).end();
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240 builder.end();
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241 }
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242
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243 builder.startElseBlock();
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244 builder.startStatement().startStaticCall(getContext().getTruffleTypes().getCompilerDirectives(), "transferToInterpreter").end().end();
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245 builder.startThrow().startNew(getContext().getType(IllegalArgumentException.class)).doubleQuote("Illegal type ").end().end();
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246 builder.end();
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247
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248 return method;
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249 }
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250
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251 private CodeExecutableElement createIsTypeMethod(TypeData type) {
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252 if (!type.getTypeChecks().isEmpty()) {
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253 return null;
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254 }
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255
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256 CodeExecutableElement method = new CodeExecutableElement(modifiers(PUBLIC), getContext().getType(boolean.class), TypeSystemCodeGenerator.isTypeMethodName(type));
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257 method.addParameter(new CodeVariableElement(getContext().getType(Object.class), LOCAL_VALUE));
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258
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259 DeclaredType suppressWarnings = (DeclaredType) getContext().getType(SuppressWarnings.class);
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260 CodeAnnotationMirror annotationMirror = new CodeAnnotationMirror(suppressWarnings);
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261 annotationMirror.setElementValue(annotationMirror.findExecutableElement("value"), new CodeAnnotationValue("static-method"));
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262 method.getAnnotationMirrors().add(annotationMirror);
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263
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264 CodeTreeBuilder body = method.createBuilder();
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265 body.startReturn().instanceOf(LOCAL_VALUE, type.getBoxedType()).end();
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266
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267 return method;
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268 }
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269
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270 private CodeExecutableElement createAsTypeMethod(TypeData type) {
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271 if (!type.getTypeCasts().isEmpty()) {
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272 return null;
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273 }
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274
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275 CodeExecutableElement method = new CodeExecutableElement(modifiers(PUBLIC), type.getPrimitiveType(), TypeSystemCodeGenerator.asTypeMethodName(type));
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276 method.addParameter(new CodeVariableElement(getContext().getType(Object.class), LOCAL_VALUE));
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277
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278 CodeTreeBuilder body = method.createBuilder();
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279 String assertMessage = typeName(getModel()) + "." + asTypeMethodName(type) + ": " + Utils.getSimpleName(type.getBoxedType()) + " expected";
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280 body.startAssert().startCall(isTypeMethodName(type)).string(LOCAL_VALUE).end().string(" : ").doubleQuote(assertMessage).end();
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281 body.startReturn().cast(type.getPrimitiveType(), body.create().string(LOCAL_VALUE).getTree()).end();
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282
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283 return method;
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284 }
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285
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286 private CodeExecutableElement createExpectTypeMethod(TypeData expectedType, TypeData sourceType) {
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287 CodeExecutableElement method = new CodeExecutableElement(modifiers(PUBLIC), expectedType.getPrimitiveType(), TypeSystemCodeGenerator.expectTypeMethodName(expectedType));
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288 method.addParameter(new CodeVariableElement(sourceType.getPrimitiveType(), LOCAL_VALUE));
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289 method.addThrownType(getContext().getTruffleTypes().getUnexpectedValueException());
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290
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291 CodeTreeBuilder body = method.createBuilder();
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292 body.startIf().startCall(TypeSystemCodeGenerator.isTypeMethodName(expectedType)).string(LOCAL_VALUE).end().end().startBlock();
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293 body.startReturn().startCall(TypeSystemCodeGenerator.asTypeMethodName(expectedType)).string(LOCAL_VALUE).end().end();
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294 body.end(); // if-block
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295 body.startThrow().startNew(getContext().getTruffleTypes().getUnexpectedValueException()).string(LOCAL_VALUE).end().end();
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296
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297 return method;
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298 }
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299
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300 }
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301 }