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annotate graal/com.oracle.graal.debug/src/com/oracle/graal/debug/MethodFilter.java @ 23394:964f28c04d7b default tip

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Don't fill the code cache with nmethods from CTW
author Tom Rodriguez <tom.rodriguez@oracle.com>
date Fri, 05 Feb 2016 22:48:36 -0800
parents 615f3bbbb174
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 /*
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2 * Copyright (c) 2012, 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.graal.debug;
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24
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25 import java.util.Arrays;
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26 import java.util.regex.Pattern;
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27
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28 import jdk.vm.ci.meta.JavaMethod;
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29 import jdk.vm.ci.meta.JavaType;
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30 import jdk.vm.ci.meta.Signature;
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31
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32 /**
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33 * This class implements a method filter that can filter based on class name, method name and
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34 * parameters. The syntax for the source pattern that is passed to the constructor is as follows:
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35 *
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36 * <pre>
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37 * SourcePatterns = SourcePattern ["," SourcePatterns] .
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38 * SourcePattern = [ Class "." ] method [ "(" [ Parameter { ";" Parameter } ] ")" ] .
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39 * Parameter = Class | "int" | "long" | "float" | "double" | "short" | "char" | "boolean" .
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40 * Class = { package "." } class .
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41 * </pre>
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42 *
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43 *
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44 * Glob pattern matching (*, ?) is allowed in all parts of the source pattern. Examples for valid
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45 * filters are:
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46 *
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47 * <ul>
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48 * <li>
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49 *
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50 * <pre>
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51 * visit(Argument;BlockScope)
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52 * </pre>
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53 *
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54 * Matches all methods named "visit", with the first parameter of type "Argument", and the second
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55 * parameter of type "BlockScope". The packages of the parameter types are irrelevant.</li>
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56 * <li>
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57 *
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58 * <pre>
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59 * arraycopy(Object;;;;)
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60 * </pre>
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61 *
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62 * Matches all methods named "arraycopy", with the first parameter of type "Object", and four more
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63 * parameters of any type. The packages of the parameter types are irrelevant.</li>
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64 * <li>
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65 *
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66 * <pre>
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67 * com.oracle.graal.compiler.graph.PostOrderNodeIterator.*
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68 * </pre>
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69 *
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70 * Matches all methods in the class "com.oracle.graal.compiler.graph.PostOrderNodeIterator".</li>
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71 * <li>
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72 *
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73 * <pre>
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74 * *
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75 * </pre>
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76 *
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77 * Matches all methods in all classes</li>
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78 * <li>
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79 *
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80 * <pre>
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81 * com.oracle.graal.compiler.graph.*.visit
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82 * </pre>
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83 *
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84 * Matches all methods named "visit" in classes in the package "com.oracle.graal.compiler.graph".
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85 * <li>
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86 *
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87 * <pre>
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88 * arraycopy,toString
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89 * </pre>
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90 *
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91 * Matches all methods named "arraycopy" or "toString", meaning that ',' acts as an <i>or</i>
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92 * operator.</li>
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93 * </ul>
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94 */
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95 public class MethodFilter {
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96
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97 private final Pattern clazz;
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98 private final Pattern methodName;
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99 private final Pattern[] signature;
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100
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101 /**
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102 * Parses a string containing list of comma separated filter patterns into an array of
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103 * {@link MethodFilter}s.
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104 */
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105 public static MethodFilter[] parse(String commaSeparatedPatterns) {
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106 String[] filters = commaSeparatedPatterns.split(",");
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107 MethodFilter[] methodFilters = new MethodFilter[filters.length];
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108 for (int i = 0; i < filters.length; i++) {
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109 methodFilters[i] = new MethodFilter(filters[i]);
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110 }
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111 return methodFilters;
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112 }
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113
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114 /**
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115 * Determines if a given method is matched by a given array of filters.
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116 */
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117 public static boolean matches(MethodFilter[] filters, JavaMethod method) {
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118 for (MethodFilter filter : filters) {
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119 if (filter.matches(method)) {
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120 return true;
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121 }
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122 }
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123 return false;
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124 }
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125
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126 /**
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127 * Determines if a given class name is matched by a given array of filters.
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128 */
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129 public static boolean matchesClassName(MethodFilter[] filters, String className) {
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130 for (MethodFilter filter : filters) {
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131 if (filter.matchesClassName(className)) {
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132 return true;
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133 }
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134 }
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135 return false;
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136 }
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137
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138 public MethodFilter(String sourcePattern) {
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139 String pattern = sourcePattern.trim();
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140
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141 // extract parameter part
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142 int pos = pattern.indexOf('(');
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143 if (pos != -1) {
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144 if (pattern.charAt(pattern.length() - 1) != ')') {
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145 throw new IllegalArgumentException("missing ')' at end of method filter pattern: " + pattern);
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146 }
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147 String[] signatureClasses = pattern.substring(pos + 1, pattern.length() - 1).split(";", -1);
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148 signature = new Pattern[signatureClasses.length];
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149 for (int i = 0; i < signatureClasses.length; i++) {
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150 signature[i] = createClassGlobPattern(signatureClasses[i].trim());
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151 }
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152 pattern = pattern.substring(0, pos);
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153 } else {
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154 signature = null;
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155 }
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156
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157 // If there is at least one "." then everything before the last "." is the class name.
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158 // Otherwise, the pattern contains only the method name.
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159 pos = pattern.lastIndexOf('.');
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160 if (pos != -1) {
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161 clazz = createClassGlobPattern(pattern.substring(0, pos));
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162 methodName = Pattern.compile(createGlobString(pattern.substring(pos + 1)));
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163 } else {
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164 clazz = null;
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165 methodName = Pattern.compile(createGlobString(pattern));
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166 }
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167 }
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168
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169 public static String createGlobString(String pattern) {
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170 return Pattern.quote(pattern).replace("?", "\\E.\\Q").replace("*", "\\E.*\\Q");
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171 }
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172
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173 private static Pattern createClassGlobPattern(String pattern) {
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174 if (pattern.length() == 0) {
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175 return null;
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176 } else if (pattern.contains(".")) {
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177 return Pattern.compile(createGlobString(pattern));
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178 } else {
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179 return Pattern.compile("([^\\.\\$]*[\\.\\$])*" + createGlobString(pattern));
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180 }
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181 }
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182
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183 /**
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184 * Determines if the class part of this filter matches a given class name.
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185 */
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186 public boolean matchesClassName(String className) {
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187 return clazz == null || clazz.matcher(className).matches();
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188 }
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189
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190 public boolean matches(JavaMethod o) {
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191 // check method name first, since MetaUtil.toJavaName is expensive
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192 if (methodName != null && !methodName.matcher(o.getName()).matches()) {
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193 return false;
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194 }
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195 if (clazz != null && !clazz.matcher(o.getDeclaringClass().toJavaName()).matches()) {
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196 return false;
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197 }
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198 if (signature != null) {
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199 Signature sig = o.getSignature();
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200 if (sig.getParameterCount(false) != signature.length) {
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201 return false;
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202 }
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203 for (int i = 0; i < signature.length; i++) {
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204 JavaType type = sig.getParameterType(i, null);
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205 String javaName = type.toJavaName();
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206 if (signature[i] != null && !signature[i].matcher(javaName).matches()) {
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207 return false;
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208 }
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209 }
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210 }
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211 return true;
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212 }
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213
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214 @Override
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215 public String toString() {
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216 StringBuilder buf = new StringBuilder("MethodFilter[");
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217 String sep = "";
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218 if (clazz != null) {
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219 buf.append(sep).append("clazz=").append(clazz);
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220 sep = ", ";
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221 }
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222 if (methodName != null) {
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223 buf.append(sep).append("methodName=").append(methodName);
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224 sep = ", ";
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225 }
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226 if (signature != null) {
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227 buf.append(sep).append("signature=").append(Arrays.toString(signature));
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228 sep = ", ";
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229 }
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230 return buf.append("]").toString();
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231 }
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232 }