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annotate graal/com.oracle.max.cri/src/com/oracle/max/cri/ri/RiResolvedType.java @ 4635:f35c183f33ce

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fixed checkcast when inlining more than one method
author Christian Haeubl <christian.haeubl@oracle.com>
date Fri, 17 Feb 2012 10:34:34 -0800
parents aaac4894175c
children d89b20486d87
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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.oracle.max.cri.ri;
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25 import java.lang.annotation.*;
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26 import java.lang.reflect.*;
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27
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28 import com.oracle.max.cri.ci.*;
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30 /**
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31 * Represents a resolved in the compiler-runtime interface. Types include primitives, objects, {@code void},
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32 * and arrays thereof. Types, like fields and methods, are resolved through {@link RiConstantPool constant pools}, and
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33 * their actual implementation is provided by the {@link RiRuntime runtime} to the compiler.
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34 */
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35 public interface RiResolvedType extends RiType {
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36
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37 /**
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38 * Gets the encoding of (that is, a constant representing the value of) the specified part of this type.
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39 * @param r the part of the this type
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40 * @return a constant representing a reference to the specified part of this type
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41 */
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42 CiConstant getEncoding(Representation r);
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43
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44 /**
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45 * Checks whether this type has any subclasses so far. Any decisions
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46 * based on this information require the registration of a dependency, since
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47 * this information may change.
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48 * @return {@code true} if this class has subclasses
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49 */
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50 boolean hasSubclass();
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51
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52 /**
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53 * Checks whether this type has a finalizer method.
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54 * @return {@code true} if this class has a finalizer
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55 */
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56 boolean hasFinalizer();
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57
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58 /**
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59 * Checks whether this type has any finalizable subclasses so far. Any decisions
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60 * based on this information require the registration of a dependency, since
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61 * this information may change.
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62 * @return {@code true} if this class has any subclasses with finalizers
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63 */
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64 boolean hasFinalizableSubclass();
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65
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66 /**
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67 * Checks whether this type is an interface.
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68 * @return {@code true} if this type is an interface
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69 */
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70 boolean isInterface();
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71
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72 /**
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73 * Checks whether this type is an instance class.
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74 * @return {@code true} if this type is an instance class
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75 */
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76 boolean isInstanceClass();
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77
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78 /**
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79 * Checks whether this type is an array class.
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80 * @return {@code true} if this type is an array class
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81 */
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82 boolean isArrayClass();
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83
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84 /**
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85 * Gets the access flags for this type. Only the flags specified in the JVM specification
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86 * will be included in the returned mask. The utility methods in the {@link Modifier} class
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87 * should be used to query the returned mask for the presence/absence of individual flags.
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88 * @return the mask of JVM defined class access flags defined for this type
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89 */
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90 int accessFlags();
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91
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92 /**
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93 * Checks whether this type is initialized.
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94 * @return {@code true} if this type is initialized
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95 */
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96 boolean isInitialized();
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97
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98 /**
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99 * Checks whether this type is a subtype of another type.
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100 * @param other the type to test
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101 * @return {@code true} if this type a subtype of the specified type
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102 */
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103 boolean isSubtypeOf(RiResolvedType other);
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104
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105 /**
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106 * Checks whether the specified object is an instance of this type.
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107 * @param obj the object to test
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108 * @return {@code true} if the object is an instance of this type
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109 */
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110 boolean isInstance(CiConstant obj);
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111
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112 /**
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113 * Attempts to get an exact type for this type. Final classes,
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114 * arrays of final classes, and primitive types all have exact types.
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115 * @return the exact type of this type, if it exists; {@code null} otherwise
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116 */
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117 RiResolvedType exactType();
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118
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119 /**
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120 * Gets the super type of this type or {@code null} if no such type exists.
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121 */
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122 RiResolvedType superType();
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123
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124 /**
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125 * Walks the class hierarchy upwards and returns the least common type that is a super type of both
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126 * the current and the given type.
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127 * @return the least common type that is a super type of both the current and the given type, or null if primitive types are involved.
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128 */
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129 RiResolvedType leastCommonAncestor(RiResolvedType otherType);
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130
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131 /**
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132 * Attempts to get the unique concrete subtype of this type.
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133 * @return the exact type of this type, if it exists; {@code null} otherwise
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134 */
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135 RiResolvedType uniqueConcreteSubtype();
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136
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137 /**
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138 * For array types, gets the type of the components.
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139 * @return the component type of this array type
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140 */
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141 RiResolvedType componentType();
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142
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143 /**
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144 * Gets the type representing an array with elements of this type.
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145 * @return a new compiler interface type representing an array of this type
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146 */
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147 RiResolvedType arrayOf();
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148
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149 /**
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150 * Resolves the method implementation for virtual dispatches on objects
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151 * of this dynamic type.
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152 * @param method the method to select the implementation of
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153 * @return the method implementation that would be selected at runtime
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154 */
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155 RiResolvedMethod resolveMethodImpl(RiResolvedMethod method);
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156
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157 /**
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158 * Given an RiMethod a, returns a concrete RiMethod b that is the only possible
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159 * unique target for a virtual call on a(). Returns {@code null} if either no
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160 * such concrete method or more than one such method exists. Returns the method a
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161 * if a is a concrete method that is not overridden. If the compiler uses the
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162 * result of this method for its compilation, it must register an assumption
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163 * (see {@link CiAssumptions}), because dynamic class loading can invalidate
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164 * the result of this method.
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165 * @param method the method a for which a unique concrete target is searched
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166 * @return the unique concrete target or {@code null} if no such target exists
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167 * or assumptions are not supported by this runtime
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168 */
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169 RiResolvedMethod uniqueConcreteMethod(RiResolvedMethod method);
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170
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171 /**
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172 * Returns the instance fields declared in this class sorted by field offset.
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173 * @return an array of instance fields
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174 */
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175 RiResolvedField[] declaredFields();
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176
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177 /**
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178 * Returns this type's annotation of a specified type.
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179 *
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180 * @param annotationClass the Class object corresponding to the annotation type
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181 * @return the annotation of type {@code annotationClass} for this type if present, else null
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182 */
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183 <T extends Annotation> T getAnnotation(Class<T> annotationClass);
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184
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185 /**
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186 * Returns the java.lang.Class object representing this RiType instance or {@code null} if none exists.
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187 * @return the java.lang.Class object
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188 */
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189 Class<?> toJava();
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190 }