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annotate graal/com.oracle.truffle.dsl.processor/src/com/oracle/truffle/dsl/processor/generator/NodeFactoryFactory.java @ 18780:f4d78e4a878d

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Truffle-DSL: fixed create method should have the same visibility as its originating constructor. (GRAAL-365 #resolve)
author Christian Humer <christian.humer@gmail.com>
date Mon, 05 Jan 2015 20:23:22 +0100
parents a720bf2e2f43
children 4ce856e65728
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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.dsl.*;
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34 import com.oracle.truffle.api.dsl.internal.*;
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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.java.model.CodeTypeMirror.ArrayCodeTypeMirror;
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39 import com.oracle.truffle.dsl.processor.model.*;
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40
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41 class NodeFactoryFactory {
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42
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43 static final String FACTORY_METHOD_NAME = "create0";
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44
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45 private final ProcessorContext context;
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46 private final NodeData node;
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47 private final TypeSystemData typeSystem;
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48 private final DSLOptions options;
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49 private final CodeTypeElement createdFactoryElement;
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50
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51 public NodeFactoryFactory(ProcessorContext context, NodeData node, CodeTypeElement createdClass) {
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52 this.context = context;
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53 this.node = node;
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54 this.createdFactoryElement = createdClass;
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55 this.typeSystem = node.getTypeSystem();
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56 this.options = typeSystem.getOptions();
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57 }
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58
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59 public static String factoryClassName(NodeData node) {
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60 return node.getNodeId() + "Factory";
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61 }
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62
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63 public CodeTypeElement create() {
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64 Modifier visibility = ElementUtils.getVisibility(node.getTemplateType().getModifiers());
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65 TypeMirror nodeFactory = ElementUtils.getDeclaredType(ElementUtils.fromTypeMirror(context.getTruffleTypes().getNodeFactoryBase()), node.getNodeType());
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66
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67 CodeTypeElement clazz = GeneratorUtils.createClass(node, null, modifiers(), factoryClassName(node), null);
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68 if (visibility != null) {
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69 clazz.getModifiers().add(visibility);
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70 }
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71 clazz.getModifiers().add(Modifier.FINAL);
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72
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73 if (createdFactoryElement != null) {
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74 clazz.setSuperClass(nodeFactory);
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75 clazz.add(createNodeFactoryConstructor());
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76 clazz.add(createCreateNodeMethod());
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77 clazz.add(createGetInstanceMethod(visibility));
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78 clazz.add(createInstanceConstant(clazz.asType()));
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79 createFactoryMethods(clazz);
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80 }
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81
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82 return clazz;
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83 }
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84
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85 private Element createNodeFactoryConstructor() {
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86 CodeExecutableElement method = new CodeExecutableElement(modifiers(PRIVATE), null, factoryClassName(node));
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87 CodeTreeBuilder builder = method.createBuilder();
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88 builder.startStatement();
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89 builder.startCall("super");
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90
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91 // node type
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92 builder.typeLiteral(node.getNodeType());
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93
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94 // execution signature
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95 builder.startGroup();
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96 if (node.getChildExecutions().isEmpty()) {
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97 builder.staticReference(context.getTruffleTypes().getDslMetadata(), NodeBaseFactory.EMPTY_CLASS_ARRAY);
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98 } else {
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99 builder.startNewArray(new ArrayCodeTypeMirror(context.getType(Class.class)), null);
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100 for (NodeExecutionData execution : node.getChildExecutions()) {
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101 builder.typeLiteral(execution.getNodeType());
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102 }
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103 builder.end();
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104 }
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105 builder.end();
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106
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107 // node signatures
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108 builder.startGroup();
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109 builder.startNewArray(new ArrayCodeTypeMirror(new ArrayCodeTypeMirror(context.getType(Class.class))), null);
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110 List<ExecutableElement> constructors = NodeBaseFactory.findUserConstructors(createdFactoryElement.asType());
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111 for (ExecutableElement constructor : constructors) {
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112 builder.startGroup();
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113 if (constructor.getParameters().isEmpty()) {
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114 builder.staticReference(context.getTruffleTypes().getDslMetadata(), NodeBaseFactory.EMPTY_CLASS_ARRAY);
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115 } else {
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116 builder.startNewArray(new ArrayCodeTypeMirror(context.getType(Class.class)), null);
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117 for (VariableElement var : constructor.getParameters()) {
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118 builder.typeLiteral(var.asType());
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119 }
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120 builder.end();
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121 }
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122 builder.end();
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123 }
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124 builder.end();
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125 builder.end();
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126
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127 builder.end().end().end();
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128 return method;
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129 }
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130
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131 private CodeExecutableElement createCreateNodeMethod() {
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132 CodeExecutableElement method = new CodeExecutableElement(modifiers(PUBLIC), node.getNodeType(), "createNode");
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133 CodeVariableElement arguments = new CodeVariableElement(context.getType(Object.class), "arguments");
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134 method.setVarArgs(true);
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135 method.addParameter(arguments);
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136
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137 CodeTreeBuilder builder = method.createBuilder();
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138 List<ExecutableElement> signatures = NodeBaseFactory.findUserConstructors(createdFactoryElement.asType());
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139 boolean ifStarted = false;
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140
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141 for (ExecutableElement element : signatures) {
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142 ifStarted = builder.startIf(ifStarted);
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143 builder.string("arguments.length == " + element.getParameters().size());
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144
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145 int index = 0;
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146 for (VariableElement param : element.getParameters()) {
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147 if (ElementUtils.isObject(param.asType())) {
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148 continue;
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149 }
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150 builder.string(" && ");
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151 if (!param.asType().getKind().isPrimitive()) {
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152 builder.string("(arguments[" + index + "] == null || ");
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153 }
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154 builder.string("arguments[" + index + "] instanceof ");
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155 builder.type(ElementUtils.boxType(context, param.asType()));
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156 if (!param.asType().getKind().isPrimitive()) {
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157 builder.string(")");
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158 }
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159 index++;
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160 }
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161 builder.end();
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162 builder.startBlock();
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163
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164 builder.startReturn().startCall("create");
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165 index = 0;
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166 for (VariableElement param : element.getParameters()) {
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167 builder.startGroup();
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168 if (!ElementUtils.isObject(param.asType())) {
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169 builder.string("(").type(param.asType()).string(") ");
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170 }
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171 builder.string("arguments[").string(String.valueOf(index)).string("]");
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172 builder.end();
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173 index++;
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174 }
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175 builder.end().end();
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176
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177 builder.end(); // block
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178 }
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179
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180 builder.startElseBlock();
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181 builder.startThrow().startNew(context.getType(IllegalArgumentException.class));
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182 builder.doubleQuote("Invalid create signature.");
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183 builder.end().end();
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184 builder.end(); // else block
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185 return method;
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186 }
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187
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188 private ExecutableElement createGetInstanceMethod(Modifier visibility) {
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189 TypeElement nodeFactoryType = ElementUtils.fromTypeMirror(context.getType(NodeFactory.class));
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190 TypeMirror returnType = ElementUtils.getDeclaredType(nodeFactoryType, node.getNodeType());
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191
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192 CodeExecutableElement method = new CodeExecutableElement(modifiers(), returnType, "getInstance");
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193 if (visibility != null) {
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194 method.getModifiers().add(visibility);
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195 }
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196 method.getModifiers().add(Modifier.STATIC);
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197
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198 String varName = instanceVarName(node);
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199
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200 CodeTreeBuilder builder = method.createBuilder();
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201 builder.startIf();
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202 builder.string(varName).string(" == null");
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203 builder.end().startBlock();
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204
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205 builder.startStatement();
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206 builder.string(varName);
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207 builder.string(" = ");
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208 builder.startNew(factoryClassName(node)).end();
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209 builder.end();
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210
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211 builder.end();
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212 builder.startReturn().string(varName).end();
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213 return method;
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214 }
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215
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216 private static String instanceVarName(NodeData node) {
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217 if (node.getDeclaringNode() != null) {
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218 return ElementUtils.firstLetterLowerCase(factoryClassName(node)) + "Instance";
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219 } else {
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220 return "instance";
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221 }
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222 }
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223
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224 private CodeVariableElement createInstanceConstant(TypeMirror factoryType) {
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225 String varName = instanceVarName(node);
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226 CodeVariableElement var = new CodeVariableElement(modifiers(), factoryType, varName);
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227 var.getModifiers().add(Modifier.PRIVATE);
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228 var.getModifiers().add(Modifier.STATIC);
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229 return var;
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230 }
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231
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232 public void createFactoryMethods(CodeTypeElement clazz) {
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233 List<ExecutableElement> constructors = NodeBaseFactory.findUserConstructors(createdFactoryElement.asType());
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234 for (ExecutableElement constructor : constructors) {
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235 clazz.add(createCreateMethod(constructor));
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236 if (constructor instanceof CodeExecutableElement) {
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237 ElementUtils.setVisibility(constructor.getModifiers(), Modifier.PRIVATE);
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238 }
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239 }
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240 }
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241
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242 private CodeExecutableElement createCreateMethod(ExecutableElement constructor) {
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243 Modifier visibility = ElementUtils.getVisibility(constructor.getModifiers());
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244 CodeExecutableElement method = CodeExecutableElement.clone(context.getEnvironment(), constructor);
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245 method.setSimpleName(CodeNames.of("create"));
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246 method.getModifiers().clear();
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247 if (visibility != null) {
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248 method.getModifiers().add(visibility);
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249 }
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250 method.getModifiers().add(Modifier.STATIC);
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251 method.setReturnType(node.getNodeType());
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252
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253 CodeTreeBuilder body = method.createBuilder();
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254 body.startReturn();
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255 if (node.getSpecializations().isEmpty()) {
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256 body.nullLiteral();
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257 } else {
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258 if (options.useNewLayout()) {
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259 body.startNew(NodeGenFactory.nodeType(node));
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260 } else {
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261 body.startCall(NodeBaseFactory.nodeSpecializationClassName(node.getSpecializations().get(0)), FACTORY_METHOD_NAME);
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262 }
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263 for (VariableElement var : method.getParameters()) {
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264 body.string(var.getSimpleName().toString());
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265 }
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266 body.end();
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267
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268 }
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269 body.end();
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270 return method;
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271 }
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272 }