Mercurial > hg > graal-compiler

annotate graal/com.oracle.max.cri/src/com/sun/cri/ri/RiResolvedMethod.java @ 3733:e233f5660da4

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Added Java files from Maxine project.
author Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
date Sat, 17 Dec 2011 19:59:18 +0100
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3733
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1 /*
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2 * Copyright (c) 2009, 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.sun.cri.ri;
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24
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25 import java.lang.annotation.*;
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26 import java.lang.reflect.*;
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27 import java.util.*;
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28
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29 import com.sun.cri.ci.*;
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30
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31
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32 /**
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33 * Represents resolved methods. Methods, like fields and types, are resolved through
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34 * {@link RiConstantPool constant pools}, and their actual implementation is provided by the {@link RiRuntime runtime}
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35 * to the compiler.
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36 */
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37 public interface RiResolvedMethod extends RiMethod {
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38
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39 /**
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40 * Gets the bytecode of the method, if the method {@linkplain #isResolved()} and has code.
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41 * @return the bytecode of the method or {@code null} if none is available
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42 */
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43 byte[] code();
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44
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45 /**
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46 * Gets the size of the bytecode of the method, if the method {@linkplain #isResolved()} and has code.
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47 * @return the size of the bytecode in bytes, or 0 if no bytecode is available
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48 */
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49 int codeSize();
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50
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51 /**
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52 * Gets the symbol used to link this method if it is native, otherwise {@code null}.
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53 */
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54 String jniSymbol();
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55
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56 /**
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57 * Gets the type in which this method is declared.
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58 * @return the type in which this method is declared
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59 */
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60 RiResolvedType holder();
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61
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62 /**
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63 * Gets the maximum number of locals used in this method's bytecode.
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64 * @return the maximum number of locals
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65 */
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66 int maxLocals();
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67
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68 /**
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69 * Gets the maximum number of stack slots used in this method's bytecode.
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70 * @return the maximum number of stack slots
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71 */
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72 int maxStackSize();
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73
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74 /**
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75 * Checks whether this method has balanced monitor operations.
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76 * @return {@code true} if the method has balanced monitor operations
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77 */
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78 boolean hasBalancedMonitors();
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79
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80 /**
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81 * Gets the access flags for this method. Only the flags specified in the JVM specification
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82 * will be included in the returned mask. The utility methods in the {@link Modifier} class
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83 * should be used to query the returned mask for the presence/absence of individual flags.
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84 * @return the mask of JVM defined method access flags defined for this method
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85 */
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86 int accessFlags();
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87
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88 /**
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89 * Checks whether this method is a leaf method.
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90 * @return {@code true} if the method is a leaf method (that is, is final or private)
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91 */
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92 boolean isLeafMethod();
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93
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94 /**
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95 * Checks whether this method is a class initializer.
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96 * @return {@code true} if the method is a class initializer
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97 */
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98 boolean isClassInitializer();
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99
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100 /**
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101 * Checks whether this method is a constructor.
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102 * @return {@code true} if the method is a constructor
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103 */
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104 boolean isConstructor();
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105
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106 /**
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107 * Checks whether this method has been overridden. Decisions made based
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108 * on a method being overridden must be registered as dependencies.
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109 * @return {@code true} if the method has been overridden
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110 */
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111 boolean isOverridden();
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112
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113 /**
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114 * Checks whether the compiler can insert safepoint polls in this method.
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115 * @return {@code true} if the method cannot have safepoint polls inserted
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116 */
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117 boolean noSafepointPolls();
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118
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119 /**
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120 * Gets a map from bytecode indexes to bit maps denoting the live locals at that position.
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121 * If a non-null array is return, its length is guaranteed to be equal to {@code code().length}.
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122 *
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123 * @return the liveness map if it is available; {@code null} otherwise
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124 */
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125 CiBitMap[] livenessMap();
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126
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127 /**
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128 * Checks whether this method can be statically bound (that is, it is final or private or static).
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129 * @return {@code true} if this method can be statically bound
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130 */
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131 boolean canBeStaticallyBound();
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132
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133 /**
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134 * Gets the list of exception handlers for this method.
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135 * @return the list of exception handlers
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136 */
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137 RiExceptionHandler[] exceptionHandlers();
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138
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139 /**
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140 * Gets a stack trace element for this method and a given bytecode index.
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141 */
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142 StackTraceElement toStackTraceElement(int bci);
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143
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144 /**
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145 * Temporary work-around to support the @ACCESSOR Maxine annotation.
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146 * Non-Maxine VMs should just return {@code null}.
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147 */
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148 RiResolvedType accessor();
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149
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150 /**
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151 * Gets the intrinsic id of this method.
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152 */
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153 String intrinsic();
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154
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155 /**
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156 * Provides an estimate of how often this method has been executed.
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157 * @return The number of invocations, or -1 if this information isn't available.
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158 */
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159 int invocationCount();
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160
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161 /**
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162 * Returns an estimate of hot often an exception was seen at the given bytecode.
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163 * @return The estimate in percent (0-100), with 0 meaning never and 100 meaning always, or -1 if this information isn't available.
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164 */
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165 int exceptionProbability(int bci);
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166
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167 /**
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168 * Returns the type profile of the instruction at the given byte code index.
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169 * @return The RiTypeProfile information, or null if it isn't available.
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170 */
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171 RiTypeProfile typeProfile(int bci);
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172
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173 /**
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174 * Returns an estimate of how often the branch at the given byte code was taken.
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175 * @return The estimated probability, with 0.0 meaning never and 1.0 meaning always, or -1 if this information isn't available.
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176 */
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177 double branchProbability(int bci);
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178
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179 /**
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180 * Returns an estimate of how often the branches of the switch at the given byte code were taken.
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181 * @return The estimated probability, with 0.0 meaning never and 1.0 meaning always, or NULL if this information isn't available.
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182 * The default case is specified at the last index.
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183 */
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184 double[] switchProbability(int bci);
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185
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186 /**
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187 * Returns a map that the compiler can use to store objects that should survive the current compilation.
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188 */
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189 Map<Object, Object> compilerStorage();
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190
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191 /**
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192 * Returns a pointer to the method's constant pool.
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193 * @return the constant pool
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194 */
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195 RiConstantPool getConstantPool();
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196
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197 /**
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198 * Returns this method's annotation of a specified type.
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199 *
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200 * @param annotationClass the Class object corresponding to the annotation type
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201 * @return the annotation of type {@code annotationClass} for this method if present, else null
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202 */
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203 <T extends Annotation> T getAnnotation(Class<T> annotationClass);
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204
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205 /**
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206 * Returns an array of arrays that represent the annotations on the formal
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207 * parameters, in declaration order, of this method.
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208 *
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209 * @see Method#getParameterAnnotations()
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210 * @see CiUtil#getParameterAnnotation(int, RiResolvedMethod)
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211 */
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212 Annotation[][] getParameterAnnotations();
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213
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214 /**
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215 * Returns an array of {@link Type} objects that represent the formal
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216 * parameter types, in declaration order, of this method.
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217 *
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218 * @see Method#getGenericParameterTypes()
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219 */
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220 Type[] getGenericParameterTypes();
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221
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222 /**
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223 * Returns a {@link Type} object that represents the formal return type of this method.
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224 *
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225 * @see Method#getGenericReturnType()
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226 */
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227 Type getGenericReturnType();
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228 }