Mercurial > hg > graal-compiler

annotate graal/com.oracle.jvmci.meta/src/com/oracle/jvmci/meta/ResolvedJavaMethod.java @ 21556:48c1ebd24120

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renamed com.oracle.graal.api[meta|code] modules to com.oracle.jvmci.[meta|code] (JBS:GRAAL-53)
author Doug Simon <doug.simon@oracle.com>
date Wed, 27 May 2015 00:36:16 +0200
parents graal/com.oracle.graal.api.meta/src/com/oracle/graal/api/meta/ResolvedJavaMethod.java@9f6733155647
children 36cf15e3219e
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1 /*
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2 * Copyright (c) 2009, 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.jvmci.meta;
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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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28 /**
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29 * Represents a resolved Java method. Methods, like fields and types, are resolved through
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30 * {@link ConstantPool constant pools}.
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31 */
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32 public interface ResolvedJavaMethod extends JavaMethod, InvokeTarget, ModifiersProvider {
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34 /**
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35 * Returns the bytecode of this method, if the method has code. The returned byte array does not
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36 * contain breakpoints or non-Java bytecodes. This may return null if the
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37 * {@link #getDeclaringClass() holder} is not {@link ResolvedJavaType#isLinked() linked}.
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38 *
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39 * The contained constant pool indices may not be the ones found in the original class file but
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40 * they can be used with the Graal API (e.g. methods in {@link ConstantPool}).
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41 *
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42 * @return the bytecode of the method, or {@code null} if {@code getCodeSize() == 0} or if the
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43 * code is not ready.
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44 */
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45 byte[] getCode();
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46
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47 /**
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48 * Returns the size of the bytecode of this method, if the method has code. This is equivalent
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49 * to {@link #getCode()}. {@code length} if the method has code.
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50 *
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51 * @return the size of the bytecode in bytes, or 0 if no bytecode is available
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52 */
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53 int getCodeSize();
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54
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55 /**
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56 * Returns the {@link ResolvedJavaType} object representing the class or interface that declares
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57 * this method.
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58 */
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59 ResolvedJavaType getDeclaringClass();
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61 /**
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62 * Returns the maximum number of locals used in this method's bytecodes.
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63 */
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64 int getMaxLocals();
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66 /**
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67 * Returns the maximum number of stack slots used in this method's bytecodes.
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68 */
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69 int getMaxStackSize();
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71 /**
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72 * {@inheritDoc}
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73 * <p>
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74 * Only the {@linkplain Modifier#methodModifiers() method flags} specified in the JVM
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75 * specification will be included in the returned mask.
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76 */
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77 int getModifiers();
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78
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79 /**
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80 * Determines if this method is a synthetic method as defined by the Java Language
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81 * Specification.
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82 */
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83 boolean isSynthetic();
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85 /**
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86 * Returns {@code true} if this method is a default method; returns {@code false} otherwise.
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87 *
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88 * A default method is a public non-abstract instance method, that is, a non-static method with
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89 * a body, declared in an interface type.
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90 *
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91 * @return true if and only if this method is a default method as defined by the Java Language
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92 * Specification.
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93 */
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94 boolean isDefault();
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95
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96 /**
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97 * Checks whether this method is a class initializer.
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98 *
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99 * @return {@code true} if the method is a class initializer
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100 */
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101 boolean isClassInitializer();
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102
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103 /**
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104 * Checks whether this method is a constructor.
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105 *
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106 * @return {@code true} if the method is a constructor
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107 */
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108 boolean isConstructor();
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109
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110 /**
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111 * Checks whether this method can be statically bound (usually, that means it is final or
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112 * private or static, but not abstract, or the declaring class is final).
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113 *
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114 * @return {@code true} if this method can be statically bound
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115 */
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116 boolean canBeStaticallyBound();
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117
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118 /**
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119 * Returns the list of exception handlers for this method.
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120 */
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121 ExceptionHandler[] getExceptionHandlers();
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123 /**
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124 * Returns a stack trace element for this method and a given bytecode index.
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125 */
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126 StackTraceElement asStackTraceElement(int bci);
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127
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128 /**
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129 * Returns an object that provides access to the profiling information recorded for this method.
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130 */
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131 ProfilingInfo getProfilingInfo();
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132
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133 /**
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134 * Invalidates the profiling information and restarts profiling upon the next invocation.
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135 */
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136 void reprofile();
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137
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138 /**
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139 * Returns the constant pool of this method.
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140 */
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141 ConstantPool getConstantPool();
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142
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143 /**
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144 * Returns all annotations of this method. If no annotations are present, an array of length 0
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145 * is returned.
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146 */
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147 Annotation[] getAnnotations();
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148
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149 /**
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150 * Returns the annotation for the specified type of this method, if such an annotation is
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151 * present.
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152 *
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153 * @param annotationClass the Class object corresponding to the annotation type
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154 * @return this element's annotation for the specified annotation type if present on this
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155 * method, else {@code null}
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156 */
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157 <T extends Annotation> T getAnnotation(Class<T> annotationClass);
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158
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159 /**
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160 * Returns an array of arrays that represent the annotations on the formal parameters, in
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161 * declaration order, of this method.
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162 *
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163 * @see Method#getParameterAnnotations()
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164 */
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165 Annotation[][] getParameterAnnotations();
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166
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167 /**
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168 * Returns an array of {@link Type} objects that represent the formal parameter types, in
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169 * declaration order, of this method.
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170 *
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171 * @see Method#getGenericParameterTypes()
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172 */
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173 Type[] getGenericParameterTypes();
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174
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175 /**
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176 * Returns {@code true} if this method is not excluded from inlining and has associated Java
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177 * bytecodes (@see {@link ResolvedJavaMethod#hasBytecodes()}).
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178 */
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179 boolean canBeInlined();
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180
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181 /**
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182 * Returns {@code true} if the inlining of this method should be forced.
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183 */
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184 boolean shouldBeInlined();
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185
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186 /**
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187 * Returns the LineNumberTable of this method or null if this method does not have a line
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188 * numbers table.
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189 */
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190 LineNumberTable getLineNumberTable();
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191
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192 /**
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193 * Returns the local variable table of this method or null if this method does not have a local
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194 * variable table.
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195 */
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196 LocalVariableTable getLocalVariableTable();
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197
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198 /**
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199 * Invokes the underlying method represented by this object, on the specified object with the
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200 * specified parameters. This method is similar to a reflective method invocation by
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201 * {@link Method#invoke}.
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202 *
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203 * @param receiver The receiver for the invocation, or {@code null} if it is a static method.
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204 * @param arguments The arguments for the invocation.
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205 * @return The value returned by the method invocation, or {@code null} if the return type is
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206 * {@code void}.
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207 */
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208 JavaConstant invoke(JavaConstant receiver, JavaConstant[] arguments);
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209
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210 /**
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211 * Gets the encoding of (that is, a constant representing the value of) this method.
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212 *
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213 * @return a constant representing a reference to this method
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214 */
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215 Constant getEncoding();
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216
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217 /**
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218 * Checks if this method is present in the virtual table for subtypes of the specified
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219 * {@linkplain ResolvedJavaType type}.
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220 *
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221 * @return true is this method is present in the virtual table for subtypes of this type.
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222 */
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223 boolean isInVirtualMethodTable(ResolvedJavaType resolved);
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224
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225 /**
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226 * Gets the annotation of a particular type for a formal parameter of this method.
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227 *
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228 * @param annotationClass the Class object corresponding to the annotation type
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229 * @param parameterIndex the index of a formal parameter of {@code method}
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230 * @return the annotation of type {@code annotationClass} for the formal parameter present, else
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231 * null
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232 * @throws IndexOutOfBoundsException if {@code parameterIndex} does not denote a formal
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233 * parameter
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234 */
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235 default <T extends Annotation> T getParameterAnnotation(Class<T> annotationClass, int parameterIndex) {
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236 if (parameterIndex >= 0) {
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237 Annotation[][] parameterAnnotations = getParameterAnnotations();
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238 for (Annotation a : parameterAnnotations[parameterIndex]) {
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239 if (a.annotationType() == annotationClass) {
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240 return annotationClass.cast(a);
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241 }
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242 }
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243 }
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244 return null;
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245 }
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246
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247 default JavaType[] toParameterTypes() {
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248 JavaType receiver = isStatic() || isConstructor() ? null : getDeclaringClass();
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249 return getSignature().toParameterTypes(receiver);
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250 }
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251
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252 /**
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253 * Gets the annotations of a particular type for the formal parameters of this method.
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254 *
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255 * @param annotationClass the Class object corresponding to the annotation type
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256 * @return the annotation of type {@code annotationClass} (if any) for each formal parameter
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257 * present
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258 */
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259 @SuppressWarnings("unchecked")
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260 default <T extends Annotation> T[] getParameterAnnotations(Class<T> annotationClass) {
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261 Annotation[][] parameterAnnotations = getParameterAnnotations();
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262 T[] result = (T[]) Array.newInstance(annotationClass, parameterAnnotations.length);
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263 for (int i = 0; i < parameterAnnotations.length; i++) {
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264 for (Annotation a : parameterAnnotations[i]) {
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265 if (a.annotationType() == annotationClass) {
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266 result[i] = annotationClass.cast(a);
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267 }
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268 }
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269 }
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270 return result;
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271 }
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272
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273 /**
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274 * Checks whether the method has bytecodes associated with it. Methods without bytecodes are
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275 * either abstract or native methods.
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276 *
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277 * @return whether the definition of this method is Java bytecodes
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278 */
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279 default boolean hasBytecodes() {
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280 return isConcrete() && !isNative();
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281 }
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282
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283 /**
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284 * Checks whether the method has a receiver parameter - i.e., whether it is not static.
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Roland Schatz <roland.schatz@oracle.com>
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285 *
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286 * @return whether the method has a receiver parameter
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287 */
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288 default boolean hasReceiver() {
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289 return !isStatic();
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290 }
21276
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291
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292 /**
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293 * Determines if this method is {@link java.lang.Object#Object()}.
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294 */
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295 default boolean isJavaLangObjectInit() {
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296 return getDeclaringClass().isJavaLangObject() && getName().equals("<init>");
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297 }
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298 }