Mercurial > hg > graal-compiler
annotate graal/com.oracle.graal.nodes/src/com/oracle/graal/nodes/java/MethodCallTargetNode.java @ 16563:1e63cb55f61d
Move InvokeKind from MethodCallTargetNode to CallTargetNode
author | Gilles Duboscq <duboscq@ssw.jku.at> |
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date | Mon, 14 Jul 2014 13:55:01 +0200 |
parents | 10c12d09a8d2 |
children | 688f84e397a3 |
rev | line source |
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1 /* |
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2 * Copyright (c) 2011, 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.graal.nodes.java; |
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24 |
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25 import com.oracle.graal.api.meta.*; |
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26 import com.oracle.graal.compiler.common.type.*; |
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27 import com.oracle.graal.graph.*; |
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28 import com.oracle.graal.graph.spi.*; |
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29 import com.oracle.graal.nodes.*; |
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30 import com.oracle.graal.nodes.type.*; |
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31 |
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32 public class MethodCallTargetNode extends CallTargetNode implements IterableNodeType, Canonicalizable { |
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33 |
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34 private final JavaType returnType; |
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35 private ResolvedJavaMethod targetMethod; |
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36 private InvokeKind invokeKind; |
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37 |
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38 /** |
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39 * @param arguments |
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40 */ |
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41 public MethodCallTargetNode(InvokeKind invokeKind, ResolvedJavaMethod targetMethod, ValueNode[] arguments, JavaType returnType) { |
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42 super(arguments); |
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43 this.invokeKind = invokeKind; |
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44 this.returnType = returnType; |
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45 this.targetMethod = targetMethod; |
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46 } |
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47 |
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48 /** |
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49 * Gets the target method for this invocation instruction. |
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50 * |
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51 * @return the target method |
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52 */ |
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53 public ResolvedJavaMethod targetMethod() { |
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54 return targetMethod; |
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55 } |
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56 |
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57 public InvokeKind invokeKind() { |
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58 return invokeKind; |
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59 } |
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60 |
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61 public void setInvokeKind(InvokeKind kind) { |
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62 this.invokeKind = kind; |
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63 } |
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64 |
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65 public void setTargetMethod(ResolvedJavaMethod method) { |
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66 targetMethod = method; |
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67 } |
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68 |
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69 /** |
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70 * Gets the instruction that produces the receiver object for this invocation, if any. |
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71 * |
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72 * @return the instruction that produces the receiver object for this invocation if any, |
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73 * {@code null} if this invocation does not take a receiver object |
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74 */ |
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75 public ValueNode receiver() { |
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76 return isStatic() ? null : arguments().get(0); |
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77 } |
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78 |
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79 /** |
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80 * Checks whether this is an invocation of a static method. |
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81 * |
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82 * @return {@code true} if the invocation is a static invocation |
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83 */ |
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84 public boolean isStatic() { |
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85 return invokeKind() == InvokeKind.Static; |
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86 } |
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87 |
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88 public Kind returnKind() { |
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89 return targetMethod().getSignature().getReturnKind(); |
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90 } |
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91 |
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92 public Invoke invoke() { |
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93 return (Invoke) this.usages().first(); |
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94 } |
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95 |
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96 @Override |
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97 public boolean verify() { |
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98 assert usages().count() <= 1 : "call target may only be used by a single invoke"; |
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99 for (Node n : usages()) { |
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100 assertTrue(n instanceof Invoke, "call target can only be used from an invoke (%s)", n); |
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101 } |
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102 if (invokeKind == InvokeKind.Special || invokeKind == InvokeKind.Static) { |
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103 assertFalse(targetMethod.isAbstract(), "special calls or static calls are only allowed for concrete methods (%s)", targetMethod); |
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104 } |
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105 if (invokeKind == InvokeKind.Static) { |
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106 assertTrue(targetMethod.isStatic(), "static calls are only allowed for static methods (%s)", targetMethod); |
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107 } else { |
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108 assertFalse(targetMethod.isStatic(), "static calls are only allowed for non-static methods (%s)", targetMethod); |
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109 } |
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110 return super.verify(); |
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111 } |
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112 |
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113 @Override |
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114 public String toString(Verbosity verbosity) { |
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115 if (verbosity == Verbosity.Long) { |
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116 return super.toString(Verbosity.Short) + "(" + targetMethod() + ")"; |
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117 } else { |
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118 return super.toString(verbosity); |
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119 } |
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120 } |
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121 |
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122 @Override |
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123 public Node canonical(CanonicalizerTool tool) { |
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124 if (invokeKind == InvokeKind.Interface || invokeKind == InvokeKind.Virtual) { |
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125 // attempt to devirtualize the call |
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126 |
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127 // check for trivial cases (e.g. final methods, nonvirtual methods) |
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128 if (targetMethod.canBeStaticallyBound()) { |
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129 invokeKind = InvokeKind.Special; |
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130 return this; |
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131 } |
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132 |
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133 // check if the type of the receiver can narrow the result |
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134 ValueNode receiver = receiver(); |
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135 ResolvedJavaType type = StampTool.typeOrNull(receiver); |
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136 if (type != null && (invoke().stateAfter() != null || invoke().stateDuring() != null)) { |
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137 /* |
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138 * either the holder class is exact, or the receiver object has an exact type, or |
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139 * it's an array type |
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140 */ |
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141 ResolvedJavaMethod resolvedMethod = type.resolveMethod(targetMethod, invoke().getContextType()); |
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142 if (resolvedMethod != null && (resolvedMethod.canBeStaticallyBound() || StampTool.isExactType(receiver) || type.isArray())) { |
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143 invokeKind = InvokeKind.Special; |
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144 targetMethod = resolvedMethod; |
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145 return this; |
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146 } |
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147 if (tool.assumptions() != null && tool.assumptions().useOptimisticAssumptions()) { |
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148 ResolvedJavaType uniqueConcreteType = type.findUniqueConcreteSubtype(); |
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149 if (uniqueConcreteType != null) { |
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150 ResolvedJavaMethod methodFromUniqueType = uniqueConcreteType.resolveMethod(targetMethod, invoke().getContextType()); |
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151 if (methodFromUniqueType != null) { |
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152 tool.assumptions().recordConcreteSubtype(type, uniqueConcreteType); |
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153 invokeKind = InvokeKind.Special; |
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154 targetMethod = methodFromUniqueType; |
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155 return this; |
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156 } |
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157 } |
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158 |
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159 ResolvedJavaMethod uniqueConcreteMethod = type.findUniqueConcreteMethod(targetMethod); |
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160 if (uniqueConcreteMethod != null) { |
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161 tool.assumptions().recordConcreteMethod(targetMethod, type, uniqueConcreteMethod); |
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162 invokeKind = InvokeKind.Special; |
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163 targetMethod = uniqueConcreteMethod; |
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164 return this; |
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165 } |
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166 } |
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167 } |
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168 } |
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169 return this; |
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170 } |
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171 |
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172 @Override |
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173 public Stamp returnStamp() { |
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174 Kind returnKind = targetMethod.getSignature().getReturnKind(); |
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175 if (returnKind == Kind.Object && returnType instanceof ResolvedJavaType) { |
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176 return StampFactory.declared((ResolvedJavaType) returnType); |
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177 } else { |
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178 return StampFactory.forKind(returnKind); |
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179 } |
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180 } |
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181 |
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182 public JavaType returnType() { |
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183 return returnType; |
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184 } |
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185 |
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186 @Override |
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187 public String targetName() { |
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188 if (targetMethod() == null) { |
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189 return "??Invalid!"; |
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190 } |
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191 return targetMethod().format("%h.%n"); |
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192 } |
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193 |
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194 public static MethodCallTargetNode find(StructuredGraph graph, ResolvedJavaMethod method) { |
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195 for (MethodCallTargetNode target : graph.getNodes(MethodCallTargetNode.class)) { |
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196 if (target.targetMethod.equals(method)) { |
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197 return target; |
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198 } |
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199 } |
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200 return null; |
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201 } |
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202 } |