| /* |
| * 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.visitor; |
| |
| import proguard.classfile.*; |
| import proguard.util.*; |
| |
| |
| /** |
| * This <code>MemberVisitor</code> delegates its visits to another given |
| * <code>MemberVisitor</code>, but only when the visited member |
| * has a descriptor that matches a given regular expression. |
| * |
| * @author Eric Lafortune |
| */ |
| public class MemberDescriptorFilter implements MemberVisitor |
| { |
| private final StringMatcher regularExpressionMatcher; |
| private final MemberVisitor memberVisitor; |
| |
| |
| /** |
| * Creates a new MemberDescriptorFilter. |
| * @param regularExpression the regular expression against which member |
| * descriptors will be matched. |
| * @param memberVisitor the <code>MemberVisitor</code> to which visits |
| * will be delegated. |
| */ |
| public MemberDescriptorFilter(String regularExpression, |
| MemberVisitor memberVisitor) |
| { |
| this(new ClassNameParser().parse(regularExpression), memberVisitor); |
| } |
| |
| |
| /** |
| * Creates a new MemberDescriptorFilter. |
| * @param regularExpressionMatcher the regular expression against which |
| * member descriptors will be matched. |
| * @param memberVisitor the <code>MemberVisitor</code> to which |
| * visits will be delegated. |
| */ |
| public MemberDescriptorFilter(StringMatcher regularExpressionMatcher, |
| MemberVisitor memberVisitor) |
| { |
| this.regularExpressionMatcher = regularExpressionMatcher; |
| this.memberVisitor = memberVisitor; |
| } |
| |
| |
| // Implementations for MemberVisitor. |
| |
| public void visitProgramField(ProgramClass programClass, ProgramField programField) |
| { |
| if (accepted(programField.getDescriptor(programClass))) |
| { |
| memberVisitor.visitProgramField(programClass, programField); |
| } |
| } |
| |
| |
| public void visitProgramMethod(ProgramClass programClass, ProgramMethod programMethod) |
| { |
| if (accepted(programMethod.getDescriptor(programClass))) |
| { |
| memberVisitor.visitProgramMethod(programClass, programMethod); |
| } |
| } |
| |
| |
| public void visitLibraryField(LibraryClass libraryClass, LibraryField libraryField) |
| { |
| if (accepted(libraryField.getDescriptor(libraryClass))) |
| { |
| memberVisitor.visitLibraryField(libraryClass, libraryField); |
| } |
| } |
| |
| |
| public void visitLibraryMethod(LibraryClass libraryClass, LibraryMethod libraryMethod) |
| { |
| if (accepted(libraryMethod.getDescriptor(libraryClass))) |
| { |
| memberVisitor.visitLibraryMethod(libraryClass, libraryMethod); |
| } |
| } |
| |
| |
| // Small utility methods. |
| |
| private boolean accepted(String name) |
| { |
| return regularExpressionMatcher.matches(name); |
| } |
| } |