| /* |
| * ProGuard -- shrinking, optimization, obfuscation, and preverification |
| * of Java bytecode. |
| * |
| * Copyright (c) 2002-2009 Eric Lafortune (eric@graphics.cornell.edu) |
| * |
| * This program is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License as published by the Free |
| * Software Foundation; either version 2 of the License, or (at your option) |
| * any later version. |
| * |
| * This program is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for |
| * more details. |
| * |
| * You should have received a copy of the GNU General Public License along |
| * with this program; if not, write to the Free Software Foundation, Inc., |
| * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| */ |
| package proguard.classfile.attribute.annotation.visitor; |
| |
| import proguard.classfile.*; |
| import proguard.classfile.attribute.annotation.Annotation; |
| import proguard.classfile.util.SimplifiedVisitor; |
| import proguard.util.*; |
| |
| /** |
| * This <code>AnnotationVisitor</code> delegates its visits to another given |
| * <code>AnnotationVisitor</code>, but only when the visited annotation has |
| * a type that matches a given regular expression. |
| * |
| * @author Eric Lafortune |
| */ |
| public class AnnotationTypeFilter |
| extends SimplifiedVisitor |
| implements AnnotationVisitor |
| { |
| private final StringMatcher regularExpressionMatcher; |
| private final AnnotationVisitor annotationVisitor; |
| |
| |
| /** |
| * Creates a new ClassNameFilter. |
| * @param regularExpression the regular expression against which annotation |
| * type names will be matched. |
| * @param annotationVisitor the <code>annotationVisitor</code> to which |
| * visits will be delegated. |
| */ |
| public AnnotationTypeFilter(String regularExpression, |
| AnnotationVisitor annotationVisitor) |
| { |
| this.regularExpressionMatcher = new ListParser(new ClassNameParser()).parse(regularExpression); |
| this.annotationVisitor = annotationVisitor; |
| } |
| |
| |
| // Implementations for AnnotationVisitor. |
| |
| public void visitAnnotation(Clazz clazz, Annotation annotation) |
| { |
| if (accepted(annotation.getType(clazz))) |
| { |
| annotationVisitor.visitAnnotation(clazz, annotation); |
| } |
| } |
| |
| |
| public void visitAnnotation(Clazz clazz, Field field, Annotation annotation) |
| { |
| if (accepted(annotation.getType(clazz))) |
| { |
| annotationVisitor.visitAnnotation(clazz, field, annotation); |
| } |
| } |
| |
| |
| public void visitAnnotation(Clazz clazz, Method method, Annotation annotation) |
| { |
| if (accepted(annotation.getType(clazz))) |
| { |
| annotationVisitor.visitAnnotation(clazz, method, annotation); |
| } |
| } |
| |
| |
| public void visitAnnotation(Clazz clazz, Method method, int parameterIndex, Annotation annotation) |
| { |
| if (accepted(annotation.getType(clazz))) |
| { |
| annotationVisitor.visitAnnotation(clazz, method, parameterIndex, annotation); |
| } |
| } |
| |
| |
| // Small utility methods. |
| |
| private boolean accepted(String name) |
| { |
| return regularExpressionMatcher.matches(name); |
| } |
| } |