Mercurial > hg > graal-jvmci-8
annotate graal/com.oracle.truffle.dsl.processor/src/com/oracle/truffle/dsl/processor/model/ExecutableTypeData.java @ 20940:476374f3fe9a
Truffle-DSL: generate better polymorphic execute signatures
author | Christian Humer <christian.humer@gmail.com> |
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date | Tue, 14 Apr 2015 15:12:48 +0200 |
parents | 18c0f02fa4d2 |
children | 833e088ee7d3 |
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.model; |
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24 |
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25 import java.util.*; |
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26 |
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27 import static com.oracle.truffle.dsl.processor.java.ElementUtils.*; |
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28 |
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29 import javax.lang.model.element.*; |
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30 import javax.lang.model.type.*; |
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31 |
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32 import com.oracle.truffle.api.nodes.*; |
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33 import com.oracle.truffle.dsl.processor.*; |
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34 import com.oracle.truffle.dsl.processor.java.*; |
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35 |
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36 public class ExecutableTypeData extends MessageContainer implements Comparable<ExecutableTypeData> { |
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37 |
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38 private final ExecutableElement method; |
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39 private final TypeMirror returnType; |
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40 private final TypeMirror frameParameter; |
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41 private final List<TypeMirror> evaluatedParameters; |
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42 private ExecutableTypeData delegatedTo; |
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43 private final List<ExecutableTypeData> delegatedFrom = new ArrayList<>(); |
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44 |
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45 private String uniqueName; |
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46 |
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47 public ExecutableTypeData(TypeMirror returnType, String uniqueName, TypeMirror frameParameter, List<TypeMirror> evaluatedParameters) { |
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48 this.returnType = returnType; |
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49 this.frameParameter = frameParameter; |
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50 this.evaluatedParameters = evaluatedParameters; |
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51 this.uniqueName = uniqueName; |
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52 this.method = null; |
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53 } |
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54 |
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55 public ExecutableTypeData(ExecutableElement method, int signatureSize, List<TypeMirror> frameTypes) { |
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56 this.method = method; |
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57 this.returnType = method.getReturnType(); |
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58 TypeMirror foundFrameParameter = null; |
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59 List<? extends VariableElement> parameters = method.getParameters(); |
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60 |
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61 int parameterIndex = 0; |
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62 evaluatedParameters = new ArrayList<>(); |
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63 if (!parameters.isEmpty()) { |
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64 TypeMirror firstParameter = parameters.get(0).asType(); |
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65 for (TypeMirror frameType : frameTypes) { |
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66 if (ElementUtils.typeEquals(firstParameter, frameType)) { |
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67 foundFrameParameter = firstParameter; |
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68 parameterIndex++; |
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69 break; |
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70 } |
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71 } |
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72 } |
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73 |
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74 int numberParameters = Math.max(parameters.size() - parameterIndex, signatureSize); |
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75 for (int i = 0; i < numberParameters; i++) { |
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76 TypeMirror parameter; |
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77 if (method.isVarArgs() && parameterIndex >= parameters.size() - 1) { |
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78 ArrayType varArgsArray = (ArrayType) parameters.get(parameters.size() - 1).asType(); |
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79 parameter = varArgsArray.getComponentType(); |
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80 } else if (parameterIndex < parameters.size()) { |
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81 parameter = parameters.get(parameterIndex).asType(); |
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82 } else { |
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83 break; |
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84 } |
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85 parameterIndex++; |
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86 evaluatedParameters.add(parameter); |
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87 } |
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88 this.frameParameter = foundFrameParameter; |
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89 this.uniqueName = "execute" + (ElementUtils.isObject(getReturnType()) ? "" : ElementUtils.getTypeId(getReturnType())); |
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90 } |
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91 |
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92 public void addDelegatedFrom(ExecutableTypeData child) { |
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93 this.delegatedFrom.add(child); |
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94 child.delegatedTo = this; |
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95 } |
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96 |
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97 public List<ExecutableTypeData> getDelegatedFrom() { |
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98 return delegatedFrom; |
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99 } |
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100 |
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101 public ExecutableTypeData getDelegatedTo() { |
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102 return delegatedTo; |
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103 } |
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104 |
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105 public ExecutableElement getMethod() { |
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106 return method; |
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107 } |
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108 |
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109 public String getUniqueName() { |
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110 return uniqueName; |
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111 } |
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112 |
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113 public void setUniqueName(String name) { |
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114 this.uniqueName = name; |
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115 } |
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116 |
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117 @Override |
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118 public Element getMessageElement() { |
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119 return method; |
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120 } |
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121 |
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122 public List<TypeMirror> getEvaluatedParameters() { |
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123 return evaluatedParameters; |
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124 } |
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125 |
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126 public int getVarArgsIndex(int parameterIndex) { |
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127 if (method.isVarArgs()) { |
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128 int index = parameterIndex - (method.getParameters().size() - 1); |
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129 return index; |
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130 } |
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131 return -1; |
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132 } |
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133 |
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134 public int getParameterIndex(int signatureIndex) { |
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135 return frameParameter != null ? signatureIndex + 1 : signatureIndex; |
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136 } |
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137 |
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138 public TypeMirror getFrameParameter() { |
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139 return frameParameter; |
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140 } |
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141 |
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142 public TypeMirror getReturnType() { |
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143 return returnType; |
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144 } |
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145 |
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146 public boolean hasUnexpectedValue(ProcessorContext context) { |
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147 return method == null ? false : ElementUtils.canThrowType(method.getThrownTypes(), context.getType(UnexpectedResultException.class)); |
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148 } |
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149 |
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150 public boolean isFinal() { |
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151 return method == null ? false : method.getModifiers().contains(Modifier.FINAL); |
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152 } |
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153 |
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154 public boolean isAbstract() { |
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155 return method == null ? false : method.getModifiers().contains(Modifier.ABSTRACT); |
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156 } |
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157 |
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158 public int getEvaluatedCount() { |
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159 return evaluatedParameters.size(); |
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160 } |
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161 |
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162 public boolean canDelegateTo(NodeData node, ExecutableTypeData to) { |
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163 ExecutableTypeData from = this; |
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164 if (to.getEvaluatedCount() < from.getEvaluatedCount()) { |
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165 return false; |
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166 } |
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167 |
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168 ProcessorContext context = node.getContext(); |
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169 |
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170 // we cannot delegate from generic to unexpected |
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171 if (!from.hasUnexpectedValue(context) && to.hasUnexpectedValue(context)) { |
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172 return false; |
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173 } |
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174 |
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175 // we can skip the return type check for void. everything is assignable to void. |
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176 if (!isVoid(from.getReturnType())) { |
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177 if (!isSubtypeBoxed(context, from.getReturnType(), to.getReturnType()) && !isSubtypeBoxed(context, to.getReturnType(), from.getReturnType())) { |
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178 return false; |
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179 } |
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180 } |
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181 if (from.getFrameParameter() != to.getFrameParameter() && from.getFrameParameter() != null && to.getFrameParameter() != null && |
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182 !isSubtypeBoxed(context, from.getFrameParameter(), to.getFrameParameter())) { |
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183 return false; |
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184 } |
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185 |
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186 for (int i = 0; i < from.getEvaluatedCount(); i++) { |
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187 if (!isSubtypeBoxed(context, from.getEvaluatedParameters().get(i), to.getEvaluatedParameters().get(i))) { |
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188 return false; |
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189 } |
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190 } |
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191 |
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192 for (int i = from.getEvaluatedCount(); i < to.getEvaluatedCount(); i++) { |
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193 TypeMirror delegateToParameter = to.getEvaluatedParameters().get(i); |
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194 if (i < node.getChildExecutions().size()) { |
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195 List<TypeMirror> genericTypes = node.getGenericTypes(node.getChildExecutions().get(i)); |
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196 |
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197 boolean typeFound = false; |
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198 for (TypeMirror generic : genericTypes) { |
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199 if (isSubtypeBoxed(context, generic, delegateToParameter)) { |
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200 typeFound = true; |
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201 } |
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202 } |
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203 if (!typeFound) { |
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204 return false; |
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205 } |
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206 } |
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207 } |
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208 |
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209 return true; |
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210 } |
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211 |
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212 public int compareTo(ExecutableTypeData o2) { |
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213 ExecutableTypeData o1 = this; |
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214 ProcessorContext context = ProcessorContext.getInstance(); |
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215 |
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216 int result = Integer.compare(o2.getEvaluatedCount(), o1.getEvaluatedCount()); |
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217 if (result != 0) { |
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218 return result; |
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219 } |
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220 |
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221 result = Boolean.compare(o1.hasUnexpectedValue(context), o2.hasUnexpectedValue(context)); |
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222 if (result != 0) { |
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223 return result; |
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224 } |
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225 |
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226 result = compareType(context, o1.getReturnType(), o2.getReturnType()); |
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227 if (result != 0) { |
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228 return result; |
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229 } |
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230 result = compareType(context, o1.getFrameParameter(), o2.getFrameParameter()); |
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231 if (result != 0) { |
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232 return result; |
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233 } |
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234 |
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235 for (int i = 0; i < o1.getEvaluatedCount(); i++) { |
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236 result = compareType(context, o1.getEvaluatedParameters().get(i), o2.getEvaluatedParameters().get(i)); |
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237 if (result != 0) { |
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238 return result; |
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239 } |
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240 } |
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241 |
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242 result = o1.getUniqueName().compareTo(o2.getUniqueName()); |
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243 if (result != 0) { |
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244 return result; |
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245 } |
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246 |
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247 if (o1.getMethod() != null && o2.getMethod() != null) { |
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248 result = ElementUtils.compareMethod(o1.getMethod(), o2.getMethod()); |
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249 if (result != 0) { |
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250 return result; |
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251 } |
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252 } |
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253 return 0; |
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254 } |
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255 |
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256 public static int compareType(ProcessorContext context, TypeMirror signature1, TypeMirror signature2) { |
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257 if (signature1 == null) { |
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258 if (signature2 == null) { |
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259 return 0; |
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260 } |
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261 return -1; |
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262 } else if (signature2 == null) { |
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263 return 1; |
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264 } |
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265 if (ElementUtils.typeEquals(signature1, signature2)) { |
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266 return 0; |
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267 } |
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268 if (isVoid(signature1)) { |
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269 if (isVoid(signature2)) { |
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270 return 0; |
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271 } |
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272 return 1; |
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273 } else if (isVoid(signature2)) { |
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274 return -1; |
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275 } |
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276 |
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277 TypeMirror boxedType1 = ElementUtils.boxType(context, signature1); |
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278 TypeMirror boxedType2 = ElementUtils.boxType(context, signature2); |
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279 |
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280 if (ElementUtils.isSubtype(boxedType1, boxedType2)) { |
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281 if (ElementUtils.isSubtype(boxedType2, boxedType1)) { |
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282 return 0; |
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283 } |
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284 return 1; |
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285 } else if (ElementUtils.isSubtype(boxedType2, boxedType1)) { |
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286 return -1; |
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287 } else { |
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288 return ElementUtils.getSimpleName(signature1).compareTo(ElementUtils.getSimpleName(signature2)); |
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289 } |
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290 } |
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291 |
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292 @Override |
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293 public String toString() { |
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294 return method != null ? ElementUtils.createReferenceName(method) : getUniqueName() + evaluatedParameters.toString(); |
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295 } |
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296 |
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297 public boolean sameParameters(ExecutableTypeData other) { |
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298 if (!typeEquals(other.getFrameParameter(), getFrameParameter())) { |
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299 return false; |
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300 } |
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301 |
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302 if (getEvaluatedCount() != other.getEvaluatedCount()) { |
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303 return false; |
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304 } |
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305 |
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306 for (int i = 0; i < getEvaluatedCount(); i++) { |
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307 if (!typeEquals(getEvaluatedParameters().get(i), other.getEvaluatedParameters().get(i))) { |
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308 return false; |
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309 } |
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310 } |
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311 return true; |
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312 } |
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313 |
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314 public boolean sameSignature(ExecutableTypeData other) { |
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315 if (!typeEquals(other.getReturnType(), getReturnType())) { |
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316 return false; |
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317 } |
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318 |
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319 if (other.getFrameParameter() != null) { |
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320 if (!typeEquals(getFrameParameter(), other.getFrameParameter())) { |
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321 return false; |
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322 } |
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323 } |
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324 |
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325 if (getEvaluatedCount() != other.getEvaluatedCount()) { |
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326 return false; |
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327 } |
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328 |
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329 for (int i = 0; i < getEvaluatedCount(); i++) { |
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330 if (!typeEquals(getEvaluatedParameters().get(i), other.getEvaluatedParameters().get(i))) { |
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331 return false; |
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332 } |
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333 } |
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334 |
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335 return true; |
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336 } |
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337 } |