proguard.classfile.util.ClassSubHierarchyInitializer Maven / Gradle / Ivy
/*
* ProGuard -- shrinking, optimization, obfuscation, and preverification
* of Java bytecode.
*
* Copyright (c) 2002-2018 GuardSquare NV
*
* 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.util;
import proguard.classfile.*;
import proguard.classfile.visitor.ClassVisitor;
/**
* This ClassVisitor adds all classes that it visits to the list of subclasses
* of their superclass. These subclass lists make it more convenient to travel
*
* @author Eric Lafortune
*/
public class ClassSubHierarchyInitializer
implements ClassVisitor
{
// Implementations for ClassVisitor.
public void visitProgramClass(ProgramClass programClass)
{
// Add this class to the subclasses of its superclass.
addSubclass(programClass, programClass.getSuperClass());
// Add this class to the subclasses of its interfaces.
for (int index = 0; index < programClass.u2interfacesCount; index++)
{
addSubclass(programClass, programClass.getInterface(index));
}
}
public void visitLibraryClass(LibraryClass libraryClass)
{
// Add this class to the subclasses of its superclass,
addSubclass(libraryClass, libraryClass.superClass);
// Add this class to the subclasses of its interfaces.
Clazz[] interfaceClasses = libraryClass.interfaceClasses;
if (interfaceClasses != null)
{
for (int index = 0; index < interfaceClasses.length; index++)
{
// Add this class to the subclasses of the interface class.
addSubclass(libraryClass, interfaceClasses[index]);
}
}
}
// Small utility methods.
private void addSubclass(Clazz subclass, Clazz clazz)
{
if (clazz != null)
{
clazz.addSubClass(subclass);
}
}
}
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