Mercurial > hg > graal-jvmci-8

annotate jvmci/jdk.vm.ci.meta/src/jdk/vm/ci/meta/JavaType.java @ 24151:26a414946c56 jvmci-0.29

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Get host class of VM anonymous class (JDK-8182310)
author Doug Simon <doug.simon@oracle.com>
date Fri, 30 Jun 2017 17:09:57 +0200
parents 1d4ce2d19e52
children
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1 /*
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2 * Copyright (c) 2009, 2015, 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 jdk.vm.ci.meta;
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24
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25 import static jdk.vm.ci.meta.MetaUtil.internalNameToJava;
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26
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27 /**
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28 * Represents a resolved or unresolved type. Types include primitives, objects, {@code void}, and
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29 * arrays thereof.
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30 */
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31 public interface JavaType {
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32
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33 /**
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34 * Returns the name of this type in internal form. The following are examples of strings
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35 * returned by this method:
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36 *
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37 * <pre>
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38 * "Ljava/lang/Object;"
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39 * "I"
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40 * "[[B"
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41 * </pre>
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42 */
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43 String getName();
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44
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45 /**
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46 * Returns an unqualified name of this type.
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47 *
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48 * <pre>
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49 * "Object"
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50 * "Integer"
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51 * </pre>
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52 */
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53 default String getUnqualifiedName() {
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54 String name = getName();
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55 if (name.indexOf('/') != -1) {
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56 name = name.substring(name.lastIndexOf('/') + 1);
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57 }
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58 if (name.endsWith(";")) {
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59 name = name.substring(0, name.length() - 1);
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60 }
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61 return name;
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62 }
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63
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64 /**
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65 * Checks whether this type is an array class.
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66 *
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67 * @return {@code true} if this type is an array class
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68 */
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69 default boolean isArray() {
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70 return getComponentType() != null;
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71 }
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72
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73 /**
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74 * For array types, gets the type of the components, or {@code null} if this is not an array
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75 * type. This method is analogous to {@link Class#getComponentType()}.
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76 */
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77 JavaType getComponentType();
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78
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79 /**
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80 * Gets the elemental type for this given type. The elemental type is the corresponding zero
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81 * dimensional type of an array type. For example, the elemental type of {@code int[][][]} is
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82 * {@code int}. A non-array type is its own elemental type.
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83 */
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84 default JavaType getElementalType() {
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85 JavaType t = this;
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86 while (t.getComponentType() != null) {
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87 t = t.getComponentType();
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88 }
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89 return t;
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90 }
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91
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92 /**
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93 * Gets the array class type representing an array with elements of this type.
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94 */
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95 JavaType getArrayClass();
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96
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97 /**
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98 * Gets the {@link JavaKind} of this type.
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99 */
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100 JavaKind getJavaKind();
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101
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102 /**
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103 * Resolves this type to a {@link ResolvedJavaType}.
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104 *
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105 * @param accessingClass the context of resolution (must not be null)
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106 * @return the resolved Java type
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107 * @throws LinkageError if the resolution failed
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108 * @throws NullPointerException if {@code accessingClass} is {@code null}
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109 */
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110 ResolvedJavaType resolve(ResolvedJavaType accessingClass);
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111
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112 /**
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113 * Gets the Java programming language name for this type. The following are examples of strings
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114 * returned by this method:
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115 *
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116 * <pre>
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117 * java.lang.Object
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118 * int
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119 * boolean[][]
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120 * </pre>
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121 *
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122 * @return the Java name corresponding to this type
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123 */
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124 default String toJavaName() {
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125 return internalNameToJava(getName(), true, false);
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126 }
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127
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128 /**
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129 * Gets the Java programming language name for this type. The following are examples of strings
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130 * returned by this method:
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131 *
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132 * <pre>
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133 * qualified == true:
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134 * java.lang.Object
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135 * int
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136 * boolean[][]
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137 * qualified == false:
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138 * Object
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139 * int
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140 * boolean[][]
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141 * </pre>
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142 *
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143 * @param qualified specifies if the package prefix of this type should be included in the
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144 * returned name
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145 * @return the Java name corresponding to this type
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146 */
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147 default String toJavaName(boolean qualified) {
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148 JavaKind kind = getJavaKind();
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149 if (kind == JavaKind.Object) {
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150 return internalNameToJava(getName(), qualified, false);
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151 }
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152 return getJavaKind().getJavaName();
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153 }
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154
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155 /**
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156 * Returns this type's name in the same format as {@link Class#getName()}.
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157 */
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158 default String toClassName() {
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159 return internalNameToJava(getName(), true, true);
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160 }
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161 }