/*
* ProGuard -- shrinking, optimization, obfuscation, and preverification
* of Java bytecode.
*
* Copyright (c) 2002-2013 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.preverify;
import proguard.Configuration;
import proguard.classfile.*;
import proguard.classfile.attribute.visitor.AllAttributeVisitor;
import proguard.classfile.visitor.*;
/**
* This class can preverify methods in program class pools, according to a given
* configuration.
*
* @author Eric Lafortune
*/
public class Preverifier
{
private final Configuration configuration;
/**
* Creates a new Preverifier.
*/
public Preverifier(Configuration configuration)
{
this.configuration = configuration;
}
/**
* Performs preverification of the given program class pool.
*/
public void execute(ClassPool programClassPool)
{
// Clean up any old visitor info.
programClassPool.classesAccept(new ClassCleaner());
// Preverify all methods.
ClassVisitor preverifier =
new AllMethodVisitor(
new AllAttributeVisitor(
new CodePreverifier(configuration.microEdition)));
// Classes from Java 6 may optionally be preverified.
// Classes from Java 7 or higher must be preverified.
if (!configuration.microEdition)
{
preverifier =
new ClassVersionFilter(ClassConstants.INTERNAL_CLASS_VERSION_1_6,
preverifier);
}
programClassPool.classesAccept(preverifier);
}
}