referencedmembervisitor.java

来自「proguard 一个java的混淆器」· Java 代码 · 共 74 行

/*
 * ProGuard -- shrinking, optimization, obfuscation, and preverification
 *             of Java bytecode.
 *
 * Copyright (c) 2002-2007 Eric Lafortune ([e-mail])
 *
 * 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.Clazz;
import proguard.classfile.attribute.annotation.*;
import proguard.classfile.attribute.annotation.visitor.ElementValueVisitor;
import proguard.classfile.constant.*;
import proguard.classfile.constant.visitor.ConstantVisitor;
import proguard.classfile.util.SimplifiedVisitor;

/**
 * This ConstantVisitor and ElementValueVisitor lets a given MemberVisitor
 * visit all the referenced class members of the elements that it visits.
 *
 * @author Eric Lafortune
 */
public class ReferencedMemberVisitor
extends      SimplifiedVisitor
implements   ConstantVisitor,
             ElementValueVisitor
{
    private final MemberVisitor memberVisitor;


    public ReferencedMemberVisitor(MemberVisitor memberVisitor)
    {
        this.memberVisitor = memberVisitor;
    }


    // Implementations for ConstantVisitor.

    public void visitAnyConstant(Clazz clazz, Constant constant) {}


    public void visitStringConstant(Clazz clazz, StringConstant stringConstant)
    {
        stringConstant.referencedMemberAccept(memberVisitor);
    }


    public void visitAnyRefConstant(Clazz clazz, RefConstant refConstant)
    {
        refConstant.referencedMemberAccept(memberVisitor);
    }


    // Implementations for ElementValueVisitor.

    public void visitAnyElementValue(Clazz clazz, Annotation annotation, ElementValue elementValue)
    {
        elementValue.referencedMethodAccept(memberVisitor);
    }
}