/*
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* ProGuard -- shrinking, optimization, obfuscation, and preverification
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* of Java bytecode.
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*
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* Copyright (c) 2002-2014 Eric Lafortune (eric@graphics.cornell.edu)
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the Free
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* Software Foundation; either version 2 of the License, or (at your option)
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* any later version.
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*
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* This program is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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package proguard.obfuscate;
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import proguard.classfile.*;
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import proguard.classfile.visitor.MemberVisitor;
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/**
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* This <code>MemberVisitor</code> delegates its visits to another given
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* <code>MemberVisitor</code>, but only when the visited member has a
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* special new name. A special name is a name that might have been produced by
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* a <code>SpecialNameFactory</code>.
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*
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* @see MemberObfuscator
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* @see SpecialNameFactory
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*
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* @author Eric Lafortune
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*/
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public class MemberSpecialNameFilter implements MemberVisitor
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{
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private final MemberVisitor memberVisitor;
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/**
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* Creates a new MemberSpecialNameFilter.
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* @param memberVisitor the <code>MemberVisitor</code> to which
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* visits will be delegated.
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*/
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public MemberSpecialNameFilter(MemberVisitor memberVisitor)
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{
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this.memberVisitor = memberVisitor;
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}
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// Implementations for MemberVisitor.
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public void visitProgramField(ProgramClass programClass, ProgramField programField)
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{
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if (hasSpecialName(programField))
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{
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memberVisitor.visitProgramField(programClass, programField);
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}
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}
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public void visitProgramMethod(ProgramClass programClass, ProgramMethod programMethod)
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{
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if (hasSpecialName(programMethod))
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{
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memberVisitor.visitProgramMethod(programClass, programMethod);
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}
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}
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public void visitLibraryField(LibraryClass libraryClass, LibraryField libraryField)
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{
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if (hasSpecialName(libraryField))
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{
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memberVisitor.visitLibraryField(libraryClass, libraryField);
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}
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}
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public void visitLibraryMethod(LibraryClass libraryClass, LibraryMethod libraryMethod)
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{
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if (hasSpecialName(libraryMethod))
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{
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memberVisitor.visitLibraryMethod(libraryClass, libraryMethod);
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}
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}
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// Small utility methods.
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/**
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* Returns whether the given class member has a special new name.
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* @param member the class member.
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*/
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private static boolean hasSpecialName(Member member)
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{
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return SpecialNameFactory.isSpecialName(MemberObfuscator.newMemberName(member));
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}
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}
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