1/* 2 * ProGuard -- shrinking, optimization, obfuscation, and preverification 3 * of Java bytecode. 4 * 5 * Copyright (c) 2002-2009 Eric Lafortune (eric@graphics.cornell.edu) 6 * 7 * This program is free software; you can redistribute it and/or modify it 8 * under the terms of the GNU General Public License as published by the Free 9 * Software Foundation; either version 2 of the License, or (at your option) 10 * any later version. 11 * 12 * This program is distributed in the hope that it will be useful, but WITHOUT 13 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 14 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for 15 * more details. 16 * 17 * You should have received a copy of the GNU General Public License along 18 * with this program; if not, write to the Free Software Foundation, Inc., 19 * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 20 */ 21package proguard.classfile.attribute.visitor; 22 23import proguard.classfile.*; 24import proguard.classfile.attribute.*; 25import proguard.classfile.attribute.annotation.*; 26import proguard.classfile.attribute.preverification.*; 27import proguard.util.StringMatcher; 28 29/** 30 * This AttributeVisitor delegates its visits another AttributeVisitor, but 31 * only when the visited attribute has a name that passes a given string 32 * matcher. 33 * 34 * @author Eric Lafortune 35 */ 36public class AttributeNameFilter 37implements AttributeVisitor 38{ 39 private final StringMatcher stringMatcher; 40 private final AttributeVisitor attributeVisitor; 41 42 43 /** 44 * Creates a new AttributeNameFilter. 45 * @param stringMatcher the string matcher that will check the attribute 46 * names. 47 * @param attributeVisitor the <code>AttributeVisitor</code> to which 48 * visits will be delegated. 49 */ 50 public AttributeNameFilter(StringMatcher stringMatcher, 51 AttributeVisitor attributeVisitor) 52 { 53 this.stringMatcher = stringMatcher; 54 this.attributeVisitor = attributeVisitor; 55 } 56 57 58 // Implementations for AttributeVisitor. 59 60 public void visitUnknownAttribute(Clazz clazz, UnknownAttribute unknownAttribute) 61 { 62 if (accepted(clazz, unknownAttribute)) 63 { 64 unknownAttribute.accept(clazz, attributeVisitor); 65 } 66 } 67 68 69 public void visitSourceFileAttribute(Clazz clazz, SourceFileAttribute sourceFileAttribute) 70 { 71 if (accepted(clazz, sourceFileAttribute)) 72 { 73 sourceFileAttribute.accept(clazz, attributeVisitor); 74 } 75 } 76 77 78 public void visitSourceDirAttribute(Clazz clazz, SourceDirAttribute sourceDirAttribute) 79 { 80 if (accepted(clazz, sourceDirAttribute)) 81 { 82 sourceDirAttribute.accept(clazz, attributeVisitor); 83 } 84 } 85 86 87 public void visitInnerClassesAttribute(Clazz clazz, InnerClassesAttribute innerClassesAttribute) 88 { 89 if (accepted(clazz, innerClassesAttribute)) 90 { 91 innerClassesAttribute.accept(clazz, attributeVisitor); 92 } 93 } 94 95 96 public void visitEnclosingMethodAttribute(Clazz clazz, EnclosingMethodAttribute enclosingMethodAttribute) 97 { 98 if (accepted(clazz, enclosingMethodAttribute)) 99 { 100 enclosingMethodAttribute.accept(clazz, attributeVisitor); 101 } 102 } 103 104 105 public void visitDeprecatedAttribute(Clazz clazz, DeprecatedAttribute deprecatedAttribute) 106 { 107 if (accepted(clazz, deprecatedAttribute)) 108 { 109 deprecatedAttribute.accept(clazz, attributeVisitor); 110 } 111 } 112 113 114 public void visitDeprecatedAttribute(Clazz clazz, Field field, DeprecatedAttribute deprecatedAttribute) 115 { 116 if (accepted(clazz, deprecatedAttribute)) 117 { 118 deprecatedAttribute.accept(clazz, field, attributeVisitor); 119 } 120 } 121 122 123 public void visitDeprecatedAttribute(Clazz clazz, Method method, DeprecatedAttribute deprecatedAttribute) 124 { 125 if (accepted(clazz, deprecatedAttribute)) 126 { 127 deprecatedAttribute.accept(clazz, method, attributeVisitor); 128 } 129 } 130 131 132 public void visitSyntheticAttribute(Clazz clazz, SyntheticAttribute syntheticAttribute) 133 { 134 if (accepted(clazz, syntheticAttribute)) 135 { 136 syntheticAttribute.accept(clazz, attributeVisitor); 137 } 138 } 139 140 141 public void visitSyntheticAttribute(Clazz clazz, Field field, SyntheticAttribute syntheticAttribute) 142 { 143 if (accepted(clazz, syntheticAttribute)) 144 { 145 syntheticAttribute.accept(clazz, field, attributeVisitor); 146 } 147 } 148 149 150 public void visitSyntheticAttribute(Clazz clazz, Method method, SyntheticAttribute syntheticAttribute) 151 { 152 if (accepted(clazz, syntheticAttribute)) 153 { 154 syntheticAttribute.accept(clazz, method, attributeVisitor); 155 } 156 } 157 158 159 public void visitSignatureAttribute(Clazz clazz, SignatureAttribute signatureAttribute) 160 { 161 if (accepted(clazz, signatureAttribute)) 162 { 163 signatureAttribute.accept(clazz, attributeVisitor); 164 } 165 } 166 167 168 public void visitSignatureAttribute(Clazz clazz, Field field, SignatureAttribute signatureAttribute) 169 { 170 if (accepted(clazz, signatureAttribute)) 171 { 172 signatureAttribute.accept(clazz, field, attributeVisitor); 173 } 174 } 175 176 177 public void visitSignatureAttribute(Clazz clazz, Method method, SignatureAttribute signatureAttribute) 178 { 179 if (accepted(clazz, signatureAttribute)) 180 { 181 signatureAttribute.accept(clazz, method, attributeVisitor); 182 } 183 } 184 185 186 public void visitConstantValueAttribute(Clazz clazz, Field field, ConstantValueAttribute constantValueAttribute) 187 { 188 if (accepted(clazz, constantValueAttribute)) 189 { 190 constantValueAttribute.accept(clazz, field, attributeVisitor); 191 } 192 } 193 194 195 public void visitExceptionsAttribute(Clazz clazz, Method method, ExceptionsAttribute exceptionsAttribute) 196 { 197 if (accepted(clazz, exceptionsAttribute)) 198 { 199 exceptionsAttribute.accept(clazz, method, attributeVisitor); 200 } 201 } 202 203 204 public void visitCodeAttribute(Clazz clazz, Method method, CodeAttribute codeAttribute) 205 { 206 if (accepted(clazz, codeAttribute)) 207 { 208 codeAttribute.accept(clazz, method, attributeVisitor); 209 } 210 } 211 212 213 public void visitStackMapAttribute(Clazz clazz, Method method, CodeAttribute codeAttribute, StackMapAttribute stackMapAttribute) 214 { 215 if (accepted(clazz, stackMapAttribute)) 216 { 217 stackMapAttribute.accept(clazz, method, codeAttribute, attributeVisitor); 218 } 219 } 220 221 222 public void visitStackMapTableAttribute(Clazz clazz, Method method, CodeAttribute codeAttribute, StackMapTableAttribute stackMapTableAttribute) 223 { 224 if (accepted(clazz, stackMapTableAttribute)) 225 { 226 stackMapTableAttribute.accept(clazz, method, codeAttribute, attributeVisitor); 227 } 228 } 229 230 231 public void visitLineNumberTableAttribute(Clazz clazz, Method method, CodeAttribute codeAttribute, LineNumberTableAttribute lineNumberTableAttribute) 232 { 233 if (accepted(clazz, lineNumberTableAttribute)) 234 { 235 lineNumberTableAttribute.accept(clazz, method, codeAttribute, attributeVisitor); 236 } 237 } 238 239 240 public void visitLocalVariableTableAttribute(Clazz clazz, Method method, CodeAttribute codeAttribute, LocalVariableTableAttribute localVariableTableAttribute) 241 { 242 if (accepted(clazz, localVariableTableAttribute)) 243 { 244 localVariableTableAttribute.accept(clazz, method, codeAttribute, attributeVisitor); 245 } 246 } 247 248 249 public void visitLocalVariableTypeTableAttribute(Clazz clazz, Method method, CodeAttribute codeAttribute, LocalVariableTypeTableAttribute localVariableTypeTableAttribute) 250 { 251 if (accepted(clazz, localVariableTypeTableAttribute)) 252 { 253 localVariableTypeTableAttribute.accept(clazz, method, codeAttribute, attributeVisitor); 254 } 255 } 256 257 258 public void visitRuntimeVisibleAnnotationsAttribute(Clazz clazz, RuntimeVisibleAnnotationsAttribute runtimeVisibleAnnotationsAttribute) 259 { 260 if (accepted(clazz, runtimeVisibleAnnotationsAttribute)) 261 { 262 runtimeVisibleAnnotationsAttribute.accept(clazz, attributeVisitor); 263 } 264 } 265 266 267 public void visitRuntimeVisibleAnnotationsAttribute(Clazz clazz, Field field, RuntimeVisibleAnnotationsAttribute runtimeVisibleAnnotationsAttribute) 268 { 269 if (accepted(clazz, runtimeVisibleAnnotationsAttribute)) 270 { 271 runtimeVisibleAnnotationsAttribute.accept(clazz, field, attributeVisitor); 272 } 273 } 274 275 276 public void visitRuntimeVisibleAnnotationsAttribute(Clazz clazz, Method method, RuntimeVisibleAnnotationsAttribute runtimeVisibleAnnotationsAttribute) 277 { 278 if (accepted(clazz, runtimeVisibleAnnotationsAttribute)) 279 { 280 runtimeVisibleAnnotationsAttribute.accept(clazz, method, attributeVisitor); 281 } 282 } 283 284 285 public void visitRuntimeInvisibleAnnotationsAttribute(Clazz clazz, RuntimeInvisibleAnnotationsAttribute runtimeInvisibleAnnotationsAttribute) 286 { 287 if (accepted(clazz, runtimeInvisibleAnnotationsAttribute)) 288 { 289 runtimeInvisibleAnnotationsAttribute.accept(clazz, attributeVisitor); 290 } 291 } 292 293 294 public void visitRuntimeInvisibleAnnotationsAttribute(Clazz clazz, Field field, RuntimeInvisibleAnnotationsAttribute runtimeInvisibleAnnotationsAttribute) 295 { 296 if (accepted(clazz, runtimeInvisibleAnnotationsAttribute)) 297 { 298 runtimeInvisibleAnnotationsAttribute.accept(clazz, field, attributeVisitor); 299 } 300 } 301 302 303 public void visitRuntimeInvisibleAnnotationsAttribute(Clazz clazz, Method method, RuntimeInvisibleAnnotationsAttribute runtimeInvisibleAnnotationsAttribute) 304 { 305 if (accepted(clazz, runtimeInvisibleAnnotationsAttribute)) 306 { 307 runtimeInvisibleAnnotationsAttribute.accept(clazz, method, attributeVisitor); 308 } 309 } 310 311 312 public void visitRuntimeVisibleParameterAnnotationsAttribute(Clazz clazz, Method method, RuntimeVisibleParameterAnnotationsAttribute runtimeVisibleParameterAnnotationsAttribute) 313 { 314 if (accepted(clazz, runtimeVisibleParameterAnnotationsAttribute)) 315 { 316 runtimeVisibleParameterAnnotationsAttribute.accept(clazz, method, attributeVisitor); 317 } 318 } 319 320 321 public void visitRuntimeInvisibleParameterAnnotationsAttribute(Clazz clazz, Method method, RuntimeInvisibleParameterAnnotationsAttribute runtimeInvisibleParameterAnnotationsAttribute) 322 { 323 if (accepted(clazz, runtimeInvisibleParameterAnnotationsAttribute)) 324 { 325 runtimeInvisibleParameterAnnotationsAttribute.accept(clazz, method, attributeVisitor); 326 } 327 } 328 329 330 public void visitAnnotationDefaultAttribute(Clazz clazz, Method method, AnnotationDefaultAttribute annotationDefaultAttribute) 331 { 332 if (accepted(clazz, annotationDefaultAttribute)) 333 { 334 annotationDefaultAttribute.accept(clazz, method, attributeVisitor); 335 } 336 } 337 338 339 // Small utility methods. 340 341 private boolean accepted(Clazz clazz, Attribute attribute) 342 { 343 return stringMatcher.matches(attribute.getAttributeName(clazz)); 344 } 345} 346