/*
* JBoss, Home of Professional Open Source
* Copyright 2010, Red Hat Middleware LLC, and individual contributors
* by the @authors tag. See the copyright.txt in the distribution for a
* full listing of individual contributors.
*
* This is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as
* published by the Free Software Foundation; either version 2.1 of
* the License, or (at your option) any later version.
*
* This software 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this software; if not, write to the Free
* Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
* 02110-1301 USA, or see the FSF site: http://www.fsf.org.
*
* (C) 2010,
* @authors Andrew Dinn
*/
package org.jboss.byteman.agent.check;
import org.jboss.byteman.rule.type.TypeHelper;
import org.objectweb.asm.ClassReader;
/**
* a private class which can be used to derive the super and interfaces of a class from its defining bytecode
*/
public class BytecodeChecker implements ClassChecker {
ClassStructureAdapter adapter;
public BytecodeChecker(byte[] buffer) {
// run a pass over the bytecode to identify the interfaces
ClassReader cr = new ClassReader(buffer);
adapter = new ClassStructureAdapter();
cr.accept(adapter, ClassReader.SKIP_CODE | ClassReader.SKIP_DEBUG | ClassReader.SKIP_FRAMES);
}
public boolean isInterface() {
return adapter.isInterface();
}
public String getSuper() {
String supername = adapter.getSuper();
if (supername != null) {
supername = TypeHelper.internalizeClass(adapter.getSuper());
}
return supername;
}
public boolean hasOuterClass() {
return adapter.getOuterClass() != null;
}
public int getInterfaceCount() {
return adapter.getInterfaces().length;
}
public String getInterface(int idx) {
return TypeHelper.internalizeClass(adapter.getInterfaces()[idx]);
}
}