Mercurial > hg > graal-jvmci-8
annotate graal/com.oracle.truffle.dsl.processor/src/com/oracle/truffle/dsl/processor/generator/TypeSystemCodeGenerator.java @ 21742:2e850dbf82ae
Truffle-DSL: fix NPE in getImplicitCastType if an implicitely casted type is short circuited. (reported-by: Mohaned Qunaibit)
author | Christian Humer <christian.humer@gmail.com> |
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date | Fri, 05 Jun 2015 14:12:49 +0200 |
parents | 9a83732f97eb |
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rev | line source |
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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.generator; |
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24 |
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25 import static com.oracle.truffle.dsl.processor.generator.GeneratorUtils.*; |
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26 import static com.oracle.truffle.dsl.processor.java.ElementUtils.*; |
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27 import static javax.lang.model.element.Modifier.*; |
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28 |
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29 import java.util.*; |
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30 |
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31 import javax.lang.model.element.*; |
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32 import javax.lang.model.type.*; |
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33 |
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34 import com.oracle.truffle.api.nodes.*; |
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35 import com.oracle.truffle.dsl.processor.*; |
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36 import com.oracle.truffle.dsl.processor.java.*; |
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37 import com.oracle.truffle.dsl.processor.java.model.*; |
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38 import com.oracle.truffle.dsl.processor.model.*; |
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39 |
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40 public class TypeSystemCodeGenerator extends CodeTypeElementFactory<TypeSystemData> { |
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41 |
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42 private static final String LOCAL_VALUE = "value"; |
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43 |
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44 public static CodeTree cast(TypeSystemData typeSystem, TypeMirror type, String content) { |
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45 return cast(typeSystem, type, CodeTreeBuilder.singleString(content)); |
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46 } |
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47 |
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48 public static CodeTree implicitType(TypeSystemData typeSystem, TypeMirror type, CodeTree value) { |
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49 if (ElementUtils.isObject(type)) { |
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50 return value; |
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51 } |
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52 CodeTreeBuilder builder = CodeTreeBuilder.createBuilder(); |
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53 builder.startStaticCall(createTypeSystemGen(typeSystem), getImplicitClass(typeSystem, type)).tree(value); |
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54 builder.end(); |
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55 return builder.build(); |
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56 } |
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57 |
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58 public static CodeTree invokeImplicitCast(TypeSystemData typeSystem, ImplicitCastData cast, CodeTree expression) { |
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59 CodeTreeBuilder builder = CodeTreeBuilder.createBuilder(); |
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60 builder.startStaticCall(createTypeSystemGen(typeSystem), cast.getMethodName()).tree(expression); |
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61 builder.end(); |
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62 return builder.build(); |
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63 } |
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64 |
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65 public static CodeTree implicitCheck(TypeSystemData typeSystem, TypeMirror type, CodeTree value, String typeHint) { |
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66 return callImplictMethod(typeSystem, type, isImplicitTypeMethodName(typeSystem, type), value, typeHint); |
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67 } |
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68 |
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69 public static CodeTree implicitExpect(TypeSystemData typeSystem, TypeMirror type, CodeTree value, String typeHint) { |
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70 return callImplictMethod(typeSystem, type, expectImplicitTypeMethodName(typeSystem, type), value, typeHint); |
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71 } |
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72 |
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73 public static CodeTree implicitCast(TypeSystemData typeSystem, TypeMirror type, CodeTree value, String typeHint) { |
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74 return callImplictMethod(typeSystem, type, asImplicitTypeMethodName(typeSystem, type), value, typeHint); |
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75 } |
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76 |
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77 private static CodeTree callImplictMethod(TypeSystemData typeSystem, TypeMirror type, String methodName, CodeTree value, String typeHint) { |
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78 if (ElementUtils.isObject(type)) { |
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79 return value; |
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80 } |
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81 CodeTreeBuilder builder = CodeTreeBuilder.createBuilder(); |
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82 builder.startStaticCall(createTypeSystemGen(typeSystem), methodName).tree(value); |
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83 if (typeHint != null) { |
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84 builder.string(typeHint); |
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85 } |
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86 builder.end(); |
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87 return builder.build(); |
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88 } |
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89 |
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90 public static CodeTree cast(TypeSystemData typeSystem, TypeMirror type, CodeTree content) { |
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91 if (ElementUtils.isObject(type)) { |
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92 return content; |
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93 } |
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94 CodeTreeBuilder builder = CodeTreeBuilder.createBuilder(); |
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95 |
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96 TypeCastData cast = typeSystem.getCast(type); |
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97 if (cast == null) { |
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98 builder.cast(ElementUtils.fillInGenericWildcards(type), content); |
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99 } else { |
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100 builder.startStaticCall(typeSystem.getTemplateType().asType(), cast.getMethodName()).tree(content).end(); |
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101 } |
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102 return builder.build(); |
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103 } |
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104 |
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105 public static CodeTree expect(TypeSystemData typeSystem, TypeMirror type, CodeTree content) { |
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106 if (ElementUtils.isObject(type) || ElementUtils.isVoid(type)) { |
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107 return content; |
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108 } |
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109 CodeTreeBuilder builder = CodeTreeBuilder.createBuilder(); |
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110 if (typeSystem.hasType(type)) { |
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111 builder.startStaticCall(createTypeSystemGen(typeSystem), expectTypeMethodName(typeSystem, type)).tree(content).end(); |
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112 } else { |
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113 builder.startCall(expectTypeMethodName(typeSystem, type)).tree(content).end(); |
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114 } |
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115 |
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116 return builder.build(); |
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117 } |
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118 |
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119 public static CodeExecutableElement createExpectMethod(Modifier visibility, TypeSystemData typeSystem, TypeMirror sourceTypeOriginal, TypeMirror expectedTypeOriginal) { |
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120 TypeMirror expectedType = ElementUtils.fillInGenericWildcards(expectedTypeOriginal); |
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121 TypeMirror sourceType = ElementUtils.fillInGenericWildcards(sourceTypeOriginal); |
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122 if (ElementUtils.isObject(expectedType) || ElementUtils.isVoid(expectedType)) { |
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123 return null; |
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124 } |
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125 |
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126 CodeExecutableElement method = new CodeExecutableElement(modifiers(STATIC), expectedType, TypeSystemCodeGenerator.expectTypeMethodName(typeSystem, expectedType)); |
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127 method.setVisibility(visibility); |
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128 method.addParameter(new CodeVariableElement(sourceType, LOCAL_VALUE)); |
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129 method.addThrownType(typeSystem.getContext().getTruffleTypes().getUnexpectedValueException()); |
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130 |
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131 CodeTreeBuilder body = method.createBuilder(); |
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132 body.startIf().tree(check(typeSystem, expectedType, LOCAL_VALUE)).end().startBlock(); |
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133 body.startReturn().tree(cast(typeSystem, expectedType, LOCAL_VALUE)).end(); |
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134 body.end(); |
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135 body.startThrow().startNew(typeSystem.getContext().getTruffleTypes().getUnexpectedValueException()).string(LOCAL_VALUE).end().end(); |
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136 return method; |
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137 } |
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138 |
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139 public static CodeTree expect(TypeSystemData typeSystem, TypeMirror sourceType, TypeMirror targetType, CodeTree content) { |
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140 if (sourceType != null && !ElementUtils.needsCastTo(sourceType, targetType)) { |
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141 return content; |
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142 } else { |
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143 return expect(typeSystem, targetType, content); |
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144 } |
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145 } |
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146 |
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147 public static CodeTypeMirror createTypeSystemGen(TypeSystemData typeSystem) { |
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148 return new GeneratedTypeMirror(ElementUtils.getPackageName(typeSystem.getTemplateType()), typeName(typeSystem)); |
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149 } |
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150 |
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151 public static CodeTree check(TypeSystemData typeSystem, TypeMirror type, String content) { |
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152 return check(typeSystem, type, CodeTreeBuilder.singleString(content)); |
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153 } |
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154 |
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155 public static CodeTree check(TypeSystemData typeSystem, TypeMirror type, CodeTree content) { |
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156 if (ElementUtils.isObject(type)) { |
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157 return content; |
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158 } |
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159 CodeTreeBuilder builder = CodeTreeBuilder.createBuilder(); |
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160 |
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161 TypeCheckData check = typeSystem.getCheck(type); |
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162 if (check == null) { |
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163 builder.instanceOf(content, ElementUtils.boxType(typeSystem.getContext(), type)); |
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164 } else { |
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165 builder.startStaticCall(typeSystem.getTemplateType().asType(), check.getMethodName()).tree(content).end(); |
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166 } |
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167 return builder.build(); |
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168 } |
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169 |
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170 public static String isTypeMethodName(TypeSystemData typeSystem, TypeMirror type) { |
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171 return "is" + getTypeId(typeSystem, type); |
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172 } |
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173 |
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174 private static String getTypeId(TypeSystemData typeSystem, TypeMirror type) { |
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175 return ElementUtils.getTypeId(typeSystem.boxType(type)); |
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176 } |
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177 |
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178 static String isImplicitTypeMethodName(TypeSystemData typeSystem, TypeMirror type) { |
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179 return "isImplicit" + getTypeId(typeSystem, type); |
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180 } |
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181 |
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182 public static String asTypeMethodName(TypeSystemData typeSystem, TypeMirror type) { |
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183 return "as" + getTypeId(typeSystem, type); |
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184 } |
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185 |
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186 static String asImplicitTypeMethodName(TypeSystemData typeSystem, TypeMirror type) { |
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187 return "asImplicit" + getTypeId(typeSystem, type); |
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188 } |
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189 |
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190 static String expectImplicitTypeMethodName(TypeSystemData typeSystem, TypeMirror type) { |
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191 return "expectImplicit" + getTypeId(typeSystem, type); |
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192 } |
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193 |
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194 static String getImplicitClass(TypeSystemData typeSystem, TypeMirror type) { |
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195 return "getImplicit" + getTypeId(typeSystem, type) + "Class"; |
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196 } |
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197 |
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198 public static String expectTypeMethodName(TypeSystemData typeSystem, TypeMirror type) { |
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199 return "expect" + getTypeId(typeSystem, type); |
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200 } |
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201 |
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202 static String typeName(TypeSystemData typeSystem) { |
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203 String name = getSimpleName(typeSystem.getTemplateType()); |
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204 return name + "Gen"; |
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205 } |
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206 |
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207 static String singletonName(TypeSystemData type) { |
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208 return createConstantName(getSimpleName(type.getTemplateType().asType())); |
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209 } |
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210 |
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211 @Override |
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212 public CodeTypeElement create(ProcessorContext context, TypeSystemData typeSystem) { |
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213 CodeTypeElement clazz = new TypeClassFactory(context, typeSystem).create(); |
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214 |
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215 if (typeSystem.getOptions().implicitCastOptimization().isMergeCasts()) { |
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216 for (TypeMirror type : typeSystem.lookupTargetTypes()) { |
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217 clazz.add(new ImplicitCastNodeFactory(context, typeSystem, type).create()); |
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218 } |
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219 } |
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220 return clazz; |
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221 } |
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222 |
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223 private static class TypeClassFactory { |
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224 |
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225 private final ProcessorContext context; |
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226 private final TypeSystemData typeSystem; |
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227 |
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228 public TypeClassFactory(ProcessorContext context, TypeSystemData typeSystem) { |
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229 this.context = context; |
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230 this.typeSystem = typeSystem; |
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231 } |
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232 |
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233 public CodeTypeElement create() { |
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234 String name = typeName(typeSystem); |
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235 CodeTypeElement clazz = GeneratorUtils.createClass(typeSystem, null, modifiers(PUBLIC, FINAL), name, typeSystem.getTemplateType().asType()); |
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236 |
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237 clazz.add(GeneratorUtils.createConstructorUsingFields(modifiers(PROTECTED), clazz)); |
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238 CodeVariableElement singleton = createSingleton(clazz); |
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239 clazz.add(singleton); |
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240 |
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241 for (TypeMirror type : typeSystem.getLegacyTypes()) { |
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242 if (ElementUtils.isVoid(type) || ElementUtils.isObject(type)) { |
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243 continue; |
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244 } |
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245 |
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246 clazz.addOptional(createIsTypeMethod(type)); |
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247 clazz.addOptional(createAsTypeMethod(type)); |
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248 clazz.addOptional(createExpectTypeMethod(type, context.getType(Object.class))); |
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249 |
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250 } |
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251 |
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252 List<TypeMirror> lookupTargetTypes = typeSystem.lookupTargetTypes(); |
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253 for (TypeMirror type : lookupTargetTypes) { |
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254 clazz.add(createAsImplicitTypeMethod(type, false)); |
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255 if (typeSystem.getOptions().implicitCastOptimization().isNone()) { |
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256 clazz.add(createExpectImplicitTypeMethod(type, false)); |
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257 } |
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258 clazz.add(createIsImplicitTypeMethod(type, false)); |
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259 |
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260 if (typeSystem.getOptions().implicitCastOptimization().isDuplicateTail()) { |
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261 clazz.add(createAsImplicitTypeMethod(type, true)); |
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262 clazz.add(createExpectImplicitTypeMethod(type, true)); |
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263 clazz.add(createIsImplicitTypeMethod(type, true)); |
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264 clazz.add(createGetImplicitClass(type)); |
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265 } |
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266 } |
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267 return clazz; |
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268 } |
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269 |
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270 private CodeVariableElement createSingleton(CodeTypeElement clazz) { |
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271 CodeVariableElement field = new CodeVariableElement(modifiers(PUBLIC, STATIC, FINAL), clazz.asType(), singletonName(typeSystem)); |
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272 field.createInitBuilder().startNew(clazz.asType()).end(); |
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273 |
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274 CodeAnnotationMirror annotationMirror = new CodeAnnotationMirror((DeclaredType) context.getType(Deprecated.class)); |
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275 field.getAnnotationMirrors().add(annotationMirror); |
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276 |
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277 return field; |
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278 } |
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279 |
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280 private CodeExecutableElement createIsImplicitTypeMethod(TypeMirror type, boolean typed) { |
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281 CodeExecutableElement method = new CodeExecutableElement(modifiers(PUBLIC, STATIC), context.getType(boolean.class), TypeSystemCodeGenerator.isImplicitTypeMethodName(typeSystem, type)); |
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282 method.addParameter(new CodeVariableElement(context.getType(Object.class), LOCAL_VALUE)); |
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283 if (typed) { |
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284 method.addParameter(new CodeVariableElement(context.getType(Class.class), "typeHint")); |
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285 } |
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286 CodeTreeBuilder builder = method.createBuilder(); |
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287 |
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288 List<TypeMirror> sourceTypes = typeSystem.lookupSourceTypes(type); |
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289 |
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290 builder.startReturn(); |
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291 String sep = ""; |
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292 for (TypeMirror sourceType : sourceTypes) { |
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293 builder.string(sep); |
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294 if (typed) { |
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295 builder.string("(typeHint == ").typeLiteral(sourceType).string(" && "); |
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296 } |
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297 builder.tree(check(typeSystem, sourceType, LOCAL_VALUE)); |
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298 if (typed) { |
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299 builder.string(")"); |
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300 } |
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301 if (sourceTypes.lastIndexOf(sourceType) != sourceTypes.size() - 1) { |
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302 builder.newLine(); |
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303 } |
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304 if (sep.equals("")) { |
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305 builder.startIndention(); |
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306 } |
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307 sep = " || "; |
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308 } |
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309 builder.end(); |
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310 builder.end(); |
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311 return method; |
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312 } |
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313 |
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314 private CodeExecutableElement createAsImplicitTypeMethod(TypeMirror type, boolean useTypeHint) { |
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315 String name = asImplicitTypeMethodName(typeSystem, type); |
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316 CodeExecutableElement method = new CodeExecutableElement(modifiers(PUBLIC, STATIC), type, name); |
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317 method.addParameter(new CodeVariableElement(context.getType(Object.class), LOCAL_VALUE)); |
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318 if (useTypeHint) { |
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319 method.addParameter(new CodeVariableElement(context.getType(Class.class), "typeHint")); |
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320 } |
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321 |
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322 List<TypeMirror> sourceTypes = typeSystem.lookupSourceTypes(type); |
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323 |
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324 CodeTreeBuilder builder = method.createBuilder(); |
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325 boolean elseIf = false; |
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326 for (TypeMirror sourceType : sourceTypes) { |
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327 elseIf = builder.startIf(elseIf); |
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328 if (useTypeHint) { |
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329 builder.string("typeHint == ").typeLiteral(sourceType); |
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330 } else { |
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331 builder.tree(check(typeSystem, sourceType, LOCAL_VALUE)); |
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332 } |
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333 |
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334 builder.end().startBlock(); |
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335 |
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336 builder.startReturn(); |
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337 ImplicitCastData cast = typeSystem.lookupCast(sourceType, type); |
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338 if (cast != null) { |
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339 builder.startCall(cast.getMethodName()); |
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340 } |
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341 builder.tree(cast(typeSystem, sourceType, LOCAL_VALUE)).end(); |
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342 if (cast != null) { |
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343 builder.end(); |
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344 } |
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345 builder.end(); |
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346 builder.end(); |
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347 } |
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348 |
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349 builder.startElseBlock(); |
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350 builder.tree(createTransferToInterpreterAndInvalidate()); |
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351 builder.startThrow().startNew(context.getType(IllegalArgumentException.class)).doubleQuote("Illegal type ").end().end(); |
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352 builder.end(); |
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353 return method; |
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354 } |
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355 |
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356 private CodeExecutableElement createExpectImplicitTypeMethod(TypeMirror type, boolean useTypeHint) { |
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357 String name = expectImplicitTypeMethodName(typeSystem, type); |
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358 CodeExecutableElement method = new CodeExecutableElement(modifiers(PUBLIC, STATIC), type, name); |
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359 method.addParameter(new CodeVariableElement(context.getType(Object.class), LOCAL_VALUE)); |
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360 if (useTypeHint) { |
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361 method.addParameter(new CodeVariableElement(context.getType(Class.class), "typeHint")); |
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362 } |
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363 method.getThrownTypes().add(context.getType(UnexpectedResultException.class)); |
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364 |
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365 List<TypeMirror> sourceTypes = typeSystem.lookupSourceTypes(type); |
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366 |
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367 CodeTreeBuilder builder = method.createBuilder(); |
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368 boolean elseIf = false; |
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369 for (TypeMirror sourceType : sourceTypes) { |
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370 elseIf = builder.startIf(elseIf); |
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371 if (useTypeHint) { |
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372 builder.string("typeHint == ").typeLiteral(sourceType); |
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373 builder.string(" && "); |
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374 } |
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375 builder.tree(check(typeSystem, sourceType, LOCAL_VALUE)); |
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376 |
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377 builder.end().startBlock(); |
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378 |
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379 builder.startReturn(); |
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380 ImplicitCastData cast = typeSystem.lookupCast(sourceType, type); |
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381 if (cast != null) { |
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382 builder.startCall(cast.getMethodName()); |
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383 } |
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384 builder.tree(cast(typeSystem, sourceType, LOCAL_VALUE)).end(); |
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385 if (cast != null) { |
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386 builder.end(); |
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387 } |
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388 builder.end(); |
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389 builder.end(); |
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390 } |
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391 |
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392 builder.startElseBlock(); |
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393 builder.startThrow().startNew(context.getType(UnexpectedResultException.class)).string(LOCAL_VALUE).end().end(); |
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394 builder.end(); |
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395 return method; |
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396 } |
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397 |
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398 private CodeExecutableElement createGetImplicitClass(TypeMirror type) { |
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399 CodeExecutableElement method = new CodeExecutableElement(modifiers(PUBLIC, STATIC), context.getType(Class.class), TypeSystemCodeGenerator.getImplicitClass(typeSystem, type)); |
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400 method.addParameter(new CodeVariableElement(context.getType(Object.class), LOCAL_VALUE)); |
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401 |
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402 List<TypeMirror> sourceTypes = typeSystem.lookupSourceTypes(type); |
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403 CodeTreeBuilder builder = method.createBuilder(); |
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404 boolean elseIf = false; |
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405 for (TypeMirror sourceType : sourceTypes) { |
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406 elseIf = builder.startIf(elseIf); |
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407 builder.tree(check(typeSystem, sourceType, LOCAL_VALUE)).end(); |
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408 builder.end().startBlock(); |
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409 builder.startReturn().typeLiteral(sourceType).end(); |
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410 builder.end(); |
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411 } |
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412 |
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413 builder.startElseIf().string(LOCAL_VALUE).string(" == ").nullLiteral().end(); |
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414 builder.startBlock(); |
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415 builder.startReturn().typeLiteral(context.getType(Object.class)).end(); |
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416 builder.end(); |
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417 |
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418 builder.startElseBlock(); |
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419 builder.tree(createTransferToInterpreterAndInvalidate()); |
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420 builder.startThrow().startNew(context.getType(IllegalArgumentException.class)).doubleQuote("Illegal type ").end().end(); |
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421 builder.end(); |
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422 |
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423 return method; |
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424 } |
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425 |
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426 private CodeExecutableElement createIsTypeMethod(TypeMirror type) { |
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427 if (typeSystem.getCheck(type) != null) { |
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428 return null; |
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429 } |
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430 |
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431 CodeExecutableElement method = new CodeExecutableElement(modifiers(PUBLIC, STATIC), context.getType(boolean.class), TypeSystemCodeGenerator.isTypeMethodName(typeSystem, type)); |
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432 method.addParameter(new CodeVariableElement(context.getType(Object.class), LOCAL_VALUE)); |
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433 |
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434 CodeTreeBuilder body = method.createBuilder(); |
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435 body.startReturn().tree(check(typeSystem, type, LOCAL_VALUE)).end(); |
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436 |
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437 return method; |
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438 } |
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439 |
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440 private CodeExecutableElement createAsTypeMethod(TypeMirror type) { |
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441 if (typeSystem.getCast(type) != null) { |
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442 return null; |
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443 } |
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444 |
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445 CodeExecutableElement method = new CodeExecutableElement(modifiers(PUBLIC, STATIC), type, TypeSystemCodeGenerator.asTypeMethodName(typeSystem, type)); |
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446 method.addParameter(new CodeVariableElement(context.getType(Object.class), LOCAL_VALUE)); |
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447 |
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448 CodeTreeBuilder body = method.createBuilder(); |
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449 String assertMessage = typeName(typeSystem) + "." + asTypeMethodName(typeSystem, type) + ": " + ElementUtils.getSimpleName(type) + " expected"; |
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450 body.startAssert().tree(check(typeSystem, type, LOCAL_VALUE)).string(" : ").doubleQuote(assertMessage).end(); |
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451 body.startReturn().tree(cast(typeSystem, type, LOCAL_VALUE)).end(); |
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452 |
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453 return method; |
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454 } |
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455 |
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456 private CodeExecutableElement createExpectTypeMethod(TypeMirror expectedType, TypeMirror sourceType) { |
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457 return createExpectMethod(Modifier.PUBLIC, typeSystem, sourceType, expectedType); |
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458 } |
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459 } |
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460 |
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461 } |