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/*
* ProGuard -- shrinking, optimization, obfuscation, and preverification
* of Java bytecode.
*
* Copyright (c) 2002-2014 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.Clazz;
import proguard.classfile.constant.*;
import proguard.classfile.constant.visitor.ConstantVisitor;
import proguard.classfile.util.*;
/**
* This ConstantVisitor lets a given ClassVisitor visit all the referenced
* classes that are returned by the invoke dynamic constants that it visits.
*
* @author Eric Lafortune
*/
public class DynamicReturnedClassVisitor
extends SimplifiedVisitor
implements ConstantVisitor
{
protected final ClassVisitor classVisitor;
public DynamicReturnedClassVisitor(ClassVisitor classVisitor)
{
this.classVisitor = classVisitor;
}
// Implementations for ConstantVisitor.
public void visitAnyConstant(Clazz clazz, Constant constant) {}
public void visitInvokeDynamicConstant(Clazz clazz, InvokeDynamicConstant invokeDynamicConstant)
{
// Is the method returning a class type?
Clazz[] referencedClasses = invokeDynamicConstant.referencedClasses;
if (referencedClasses != null &&
referencedClasses.length > 0 &&
ClassUtil.isInternalClassType(ClassUtil.internalMethodReturnType(invokeDynamicConstant.getType(clazz))))
{
// Let the visitor visit the return type class, if any.
Clazz referencedClass = referencedClasses[referencedClasses.length - 1];
if (referencedClass != null)
{
referencedClass.accept(classVisitor);
}
}
}
}
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