Mercurial > hg > graal-jvmci-8

annotate jvmci/jdk.vm.ci.meta/src/jdk/vm/ci/meta/MetaUtil.java @ 23393:1d4ce2d19e52

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clean up and minimize JVMCI (JDK-8156835)
author Doug Simon <doug.simon@oracle.com>
date Thu, 12 May 2016 20:57:31 +0200
parents 1bbd4a7c274b
children d6bd0b9cd0b6
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1 /*
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2 * Copyright (c) 2012, 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 java.lang.reflect.Field;
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26 import java.lang.reflect.Modifier;
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27
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28 /**
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29 * Miscellaneous collection of utility methods used by {@code jdk.vm.ci.meta} and its clients.
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30 */
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31 public class MetaUtil {
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32
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33 /**
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34 * Extends the functionality of {@link Class#getSimpleName()} to include a non-empty string for
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35 * anonymous and local classes.
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36 *
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37 * @param clazz the class for which the simple name is being requested
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38 * @param withEnclosingClass specifies if the returned name should be qualified with the name(s)
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39 * of the enclosing class/classes of {@code clazz} (if any). This option is ignored
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40 * if {@code clazz} denotes an anonymous or local class.
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41 * @return the simple name
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42 */
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43 public static String getSimpleName(Class<?> clazz, boolean withEnclosingClass) {
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44 final String simpleName = clazz.getSimpleName();
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45 if (simpleName.length() != 0) {
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46 if (withEnclosingClass) {
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47 String prefix = "";
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48 Class<?> enclosingClass = clazz;
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49 while ((enclosingClass = enclosingClass.getEnclosingClass()) != null) {
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50 prefix = enclosingClass.getSimpleName() + "." + prefix;
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51 }
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52 return prefix + simpleName;
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53 }
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54 return simpleName;
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55 }
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56 // Must be an anonymous or local class
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57 final String name = clazz.getName();
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58 int index = name.indexOf('$');
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59 if (index == -1) {
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60 return name;
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61 }
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62 index = name.lastIndexOf('.', index);
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63 if (index == -1) {
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64 return name;
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65 }
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66 return name.substring(index + 1);
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67 }
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68
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69 /**
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70 * Converts a type name in internal form to an external form.
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71 *
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72 * @param name the internal name to convert
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73 * @param qualified whether the returned name should be qualified with the package name
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74 * @param classForNameCompatible specifies if the returned name for array types should be in
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75 * {@link Class#forName(String)} format (e.g., {@code "[Ljava.lang.Object;"},
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76 * {@code "[[I"}) or in Java source code format (e.g., {@code "java.lang.Object[]"},
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77 * {@code "int[][]"} ).
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78 */
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79 public static String internalNameToJava(String name, boolean qualified, boolean classForNameCompatible) {
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80 switch (name.charAt(0)) {
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81 case 'L': {
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82 String result = name.substring(1, name.length() - 1).replace('/', '.');
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83 if (!qualified) {
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84 final int lastDot = result.lastIndexOf('.');
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85 if (lastDot != -1) {
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86 result = result.substring(lastDot + 1);
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87 }
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88 }
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89 return result;
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90 }
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91 case '[':
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92 return classForNameCompatible ? name.replace('/', '.') : internalNameToJava(name.substring(1), qualified, classForNameCompatible) + "[]";
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93 default:
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94 if (name.length() != 1) {
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95 throw new IllegalArgumentException("Illegal internal name: " + name);
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96 }
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97 return JavaKind.fromPrimitiveOrVoidTypeChar(name.charAt(0)).getJavaName();
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98 }
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99 }
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100
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101 /**
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102 * Convenient shortcut for calling
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103 * {@link #appendLocation(StringBuilder, ResolvedJavaMethod, int)} without having to supply a
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104 * {@link StringBuilder} instance and convert the result to a string.
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105 */
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106 public static String toLocation(ResolvedJavaMethod method, int bci) {
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107 return appendLocation(new StringBuilder(), method, bci).toString();
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108 }
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109
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110 /**
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111 * Appends a string representation of a location specified by a given method and bci to a given
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112 * {@link StringBuilder}. If a stack trace element with a non-null file name and non-negative
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113 * line number is {@linkplain ResolvedJavaMethod#asStackTraceElement(int) available} for the
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114 * given method, then the string returned is the {@link StackTraceElement#toString()} value of
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115 * the stack trace element, suffixed by the bci location. For example:
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116 *
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117 * <pre>
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118 * java.lang.String.valueOf(String.java:2930) [bci: 12]
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119 * </pre>
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120 *
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121 * Otherwise, the string returned is the value of applying {@link JavaMethod#format(String)}
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122 * with the format string {@code "%H.%n(%p)"}, suffixed by the bci location. For example:
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123 *
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124 * <pre>
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125 * java.lang.String.valueOf(int) [bci: 12]
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126 * </pre>
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127 *
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128 * @param sb
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129 * @param method
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diff changeset
130 * @param bci
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diff changeset
131 */
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diff changeset
132 public static StringBuilder appendLocation(StringBuilder sb, ResolvedJavaMethod method, int bci) {
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diff changeset
133 if (method != null) {
6539
2463eb24b644 Cleanup of Graal API: Rename methods so that it follows the getXxx naming convention and so that they are similar to the names of the java.lang.reflect classes. Remove unused methods.
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parents: 6328
diff changeset
134 StackTraceElement ste = method.asStackTraceElement(bci);
5719
429accae15aa moved some methods from CodeUtil to MetaUtil
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parents: 5547
diff changeset
135 if (ste.getFileName() != null && ste.getLineNumber() > 0) {
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diff changeset
136 sb.append(ste);
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parents: 5547
diff changeset
137 } else {
16480
10c12d09a8d2 moved format(String format, JavaMethod method) from MetaUtil to be a default method in JavaMethod
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parents: 16479
diff changeset
138 sb.append(method.format("%H.%n(%p)"));
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139 }
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140 } else {
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diff changeset
141 sb.append("Null method");
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142 }
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diff changeset
143 return sb.append(" [bci: ").append(bci).append(']');
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144 }
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145
16490
cac0a7d1c325 moved profileToString(ProfilingInfo info, ResolvedJavaMethod method, String sep) from MetaUtil to be a default method in ProfilingInfo
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parents: 16488
diff changeset
146 static void appendProfile(StringBuilder buf, AbstractJavaProfile<?, ?> profile, int bci, String type, String sep) {
9760
c76b43ed5089 Added infrastructure for recording invoked methods in the profiling information.
Christian Haeubl <haeubl@ssw.jku.at>
parents: 9473
diff changeset
147 if (profile != null) {
15040
288c23143d47 Fix most raw type references.
Josef Eisl <josef.eisl@jku.at>
parents: 15018
diff changeset
148 AbstractProfiledItem<?>[] pitems = profile.getItems();
9760
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diff changeset
149 if (pitems != null) {
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150 buf.append(String.format("%s@%d:", type, bci));
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151 for (int j = 0; j < pitems.length; j++) {
15040
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diff changeset
152 AbstractProfiledItem<?> pitem = pitems[j];
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parents: 9473
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153 buf.append(String.format(" %.6f (%s)%s", pitem.getProbability(), pitem.getItem(), sep));
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154 }
c76b43ed5089 Added infrastructure for recording invoked methods in the profiling information.
Christian Haeubl <haeubl@ssw.jku.at>
parents: 9473
diff changeset
155 if (profile.getNotRecordedProbability() != 0) {
9764
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parents: 9760
diff changeset
156 buf.append(String.format(" %.6f <other %s>%s", profile.getNotRecordedProbability(), type, sep));
9760
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parents: 9473
diff changeset
157 } else {
9764
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parents: 9760
diff changeset
158 buf.append(String.format(" <no other %s>%s", type, sep));
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parents: 9473
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159 }
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parents: 9473
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160 }
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Christian Haeubl <haeubl@ssw.jku.at>
parents: 9473
diff changeset
161 }
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Christian Haeubl <haeubl@ssw.jku.at>
parents: 9473
diff changeset
162 }
c76b43ed5089 Added infrastructure for recording invoked methods in the profiling information.
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parents: 9473
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163
5719
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diff changeset
164 /**
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165 * Converts a Java source-language class name into the internal form.
15040
288c23143d47 Fix most raw type references.
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parents: 15018
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166 *
5719
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167 * @param className the class name
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168 * @return the internal name form of the class name
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169 */
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170 public static String toInternalName(String className) {
21963
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diff changeset
171 if (className.startsWith("[")) {
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172 /* Already in the correct array style. */
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173 return className.replace('.', '/');
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parents: 21798
diff changeset
174 }
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diff changeset
175
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diff changeset
176 StringBuilder result = new StringBuilder();
7015
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parents: 6699
diff changeset
177 String base = className;
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parents: 6699
diff changeset
178 while (base.endsWith("[]")) {
21963
bb3f0968303c Fix MetaUtil.toInternalName
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parents: 21798
diff changeset
179 result.append("[");
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diff changeset
180 base = base.substring(0, base.length() - 2);
7015
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parents: 6699
diff changeset
181 }
62818f156081 added ResolvedJavaType.isClass(Class c) to replace some uses of ResolvedJavaType.toJava()
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diff changeset
182
21963
bb3f0968303c Fix MetaUtil.toInternalName
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parents: 21798
diff changeset
183 switch (base) {
16726
734247341e6e use string switch in MetaUtil
Lukas Stadler <lukas.stadler@oracle.com>
parents: 16715
diff changeset
184 case "boolean":
21963
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diff changeset
185 result.append("Z");
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parents: 21798
diff changeset
186 break;
16726
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parents: 16715
diff changeset
187 case "byte":
21963
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diff changeset
188 result.append("B");
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diff changeset
189 break;
16726
734247341e6e use string switch in MetaUtil
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diff changeset
190 case "short":
21963
bb3f0968303c Fix MetaUtil.toInternalName
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diff changeset
191 result.append("S");
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parents: 21798
diff changeset
192 break;
16726
734247341e6e use string switch in MetaUtil
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parents: 16715
diff changeset
193 case "char":
21963
bb3f0968303c Fix MetaUtil.toInternalName
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diff changeset
194 result.append("C");
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parents: 21798
diff changeset
195 break;
16726
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parents: 16715
diff changeset
196 case "int":
21963
bb3f0968303c Fix MetaUtil.toInternalName
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diff changeset
197 result.append("I");
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diff changeset
198 break;
16726
734247341e6e use string switch in MetaUtil
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diff changeset
199 case "float":
21963
bb3f0968303c Fix MetaUtil.toInternalName
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parents: 21798
diff changeset
200 result.append("F");
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parents: 21798
diff changeset
201 break;
16726
734247341e6e use string switch in MetaUtil
Lukas Stadler <lukas.stadler@oracle.com>
parents: 16715
diff changeset
202 case "long":
21963
bb3f0968303c Fix MetaUtil.toInternalName
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parents: 21798
diff changeset
203 result.append("J");
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parents: 21798
diff changeset
204 break;
16726
734247341e6e use string switch in MetaUtil
Lukas Stadler <lukas.stadler@oracle.com>
parents: 16715
diff changeset
205 case "double":
21963
bb3f0968303c Fix MetaUtil.toInternalName
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parents: 21798
diff changeset
206 result.append("D");
bb3f0968303c Fix MetaUtil.toInternalName
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parents: 21798
diff changeset
207 break;
16726
734247341e6e use string switch in MetaUtil
Lukas Stadler <lukas.stadler@oracle.com>
parents: 16715
diff changeset
208 case "void":
21963
bb3f0968303c Fix MetaUtil.toInternalName
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parents: 21798
diff changeset
209 result.append("V");
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parents: 21798
diff changeset
210 break;
16726
734247341e6e use string switch in MetaUtil
Lukas Stadler <lukas.stadler@oracle.com>
parents: 16715
diff changeset
211 default:
21963
bb3f0968303c Fix MetaUtil.toInternalName
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parents: 21798
diff changeset
212 result.append("L").append(base.replace('.', '/')).append(";");
bb3f0968303c Fix MetaUtil.toInternalName
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parents: 21798
diff changeset
213 break;
7015
62818f156081 added ResolvedJavaType.isClass(Class c) to replace some uses of ResolvedJavaType.toJava()
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parents: 6699
diff changeset
214 }
21963
bb3f0968303c Fix MetaUtil.toInternalName
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parents: 21798
diff changeset
215 return result.toString();
5719
429accae15aa moved some methods from CodeUtil to MetaUtil
Doug Simon <doug.simon@oracle.com>
parents: 5547
diff changeset
216 }
429accae15aa moved some methods from CodeUtil to MetaUtil
Doug Simon <doug.simon@oracle.com>
parents: 5547
diff changeset
217
429accae15aa moved some methods from CodeUtil to MetaUtil
Doug Simon <doug.simon@oracle.com>
parents: 5547
diff changeset
218 /**
18499
bd74da0a76f3 implemented toString() for classes that throw UnsupportedError for hashCode()
Doug Simon <doug.simon@oracle.com>
parents: 18465
diff changeset
219 * Gets a string representation of an object based soley on its class and its
bd74da0a76f3 implemented toString() for classes that throw UnsupportedError for hashCode()
Doug Simon <doug.simon@oracle.com>
parents: 18465
diff changeset
220 * {@linkplain System#identityHashCode(Object) identity hash code}. This avoids and calls to
bd74da0a76f3 implemented toString() for classes that throw UnsupportedError for hashCode()
Doug Simon <doug.simon@oracle.com>
parents: 18465
diff changeset
221 * virtual methods on the object such as {@link Object#hashCode()}.
bd74da0a76f3 implemented toString() for classes that throw UnsupportedError for hashCode()
Doug Simon <doug.simon@oracle.com>
parents: 18465
diff changeset
222 */
bd74da0a76f3 implemented toString() for classes that throw UnsupportedError for hashCode()
Doug Simon <doug.simon@oracle.com>
parents: 18465
diff changeset
223 public static String identityHashCodeString(Object obj) {
bd74da0a76f3 implemented toString() for classes that throw UnsupportedError for hashCode()
Doug Simon <doug.simon@oracle.com>
parents: 18465
diff changeset
224 if (obj == null) {
bd74da0a76f3 implemented toString() for classes that throw UnsupportedError for hashCode()
Doug Simon <doug.simon@oracle.com>
parents: 18465
diff changeset
225 return "null";
bd74da0a76f3 implemented toString() for classes that throw UnsupportedError for hashCode()
Doug Simon <doug.simon@oracle.com>
parents: 18465
diff changeset
226 }
bd74da0a76f3 implemented toString() for classes that throw UnsupportedError for hashCode()
Doug Simon <doug.simon@oracle.com>
parents: 18465
diff changeset
227 return obj.getClass().getName() + "@" + System.identityHashCode(obj);
bd74da0a76f3 implemented toString() for classes that throw UnsupportedError for hashCode()
Doug Simon <doug.simon@oracle.com>
parents: 18465
diff changeset
228 }
22011
4c9d4fe1cbd8 Add ModifiersProvider.isSynthetic, isVarArgs and isBridge.
Gilles Duboscq <gilles.m.duboscq@oracle.com>
parents: 21963
diff changeset
229
4c9d4fe1cbd8 Add ModifiersProvider.isSynthetic, isVarArgs and isBridge.
Gilles Duboscq <gilles.m.duboscq@oracle.com>
parents: 21963
diff changeset
230 /**
4c9d4fe1cbd8 Add ModifiersProvider.isSynthetic, isVarArgs and isBridge.
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parents: 21963
diff changeset
231 * Used to lookup constants from {@link Modifier} that are not public (VARARGS, SYNTHETIC etc.).
4c9d4fe1cbd8 Add ModifiersProvider.isSynthetic, isVarArgs and isBridge.
Gilles Duboscq <gilles.m.duboscq@oracle.com>
parents: 21963
diff changeset
232 */
4c9d4fe1cbd8 Add ModifiersProvider.isSynthetic, isVarArgs and isBridge.
Gilles Duboscq <gilles.m.duboscq@oracle.com>
parents: 21963
diff changeset
233 static int getNonPublicModifierStaticField(String name) {
4c9d4fe1cbd8 Add ModifiersProvider.isSynthetic, isVarArgs and isBridge.
Gilles Duboscq <gilles.m.duboscq@oracle.com>
parents: 21963
diff changeset
234 try {
4c9d4fe1cbd8 Add ModifiersProvider.isSynthetic, isVarArgs and isBridge.
Gilles Duboscq <gilles.m.duboscq@oracle.com>
parents: 21963
diff changeset
235 Field field = Modifier.class.getDeclaredField(name);
4c9d4fe1cbd8 Add ModifiersProvider.isSynthetic, isVarArgs and isBridge.
Gilles Duboscq <gilles.m.duboscq@oracle.com>
parents: 21963
diff changeset
236 field.setAccessible(true);
4c9d4fe1cbd8 Add ModifiersProvider.isSynthetic, isVarArgs and isBridge.
Gilles Duboscq <gilles.m.duboscq@oracle.com>
parents: 21963
diff changeset
237 return field.getInt(null);
4c9d4fe1cbd8 Add ModifiersProvider.isSynthetic, isVarArgs and isBridge.
Gilles Duboscq <gilles.m.duboscq@oracle.com>
parents: 21963
diff changeset
238 } catch (NoSuchFieldException | SecurityException | IllegalArgumentException | IllegalAccessException e) {
4c9d4fe1cbd8 Add ModifiersProvider.isSynthetic, isVarArgs and isBridge.
Gilles Duboscq <gilles.m.duboscq@oracle.com>
parents: 21963
diff changeset
239 throw new InternalError(e);
4c9d4fe1cbd8 Add ModifiersProvider.isSynthetic, isVarArgs and isBridge.
Gilles Duboscq <gilles.m.duboscq@oracle.com>
parents: 21963
diff changeset
240 }
4c9d4fe1cbd8 Add ModifiersProvider.isSynthetic, isVarArgs and isBridge.
Gilles Duboscq <gilles.m.duboscq@oracle.com>
parents: 21963
diff changeset
241 }
5507
dc71b06d09f8 Moving classes from cri.ri to api.meta.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
242 }