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/*
 * FindBugs - Find Bugs in Java programs
 * Copyright (C) 2006, University of Maryland
 *
 * This library 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 library 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 library; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */

package edu.umd.cs.findbugs.classfile.impl;

import edu.umd.cs.findbugs.classfile.ICodeBase;
import edu.umd.cs.findbugs.classfile.ICodeBaseEntry;
import edu.umd.cs.findbugs.classfile.ICodeBaseIterator;
import edu.umd.cs.findbugs.classfile.IScannableCodeBase;

/**
 * An implementation of ICodeBaseIterator that delegates to another codebase. In
 * particular, the codebase entries it creates are DelegatingCodeBaseEntry
 * objects.
 *
 * @author David Hovemeyer
 */
public class DelegatingCodeBaseIterator implements ICodeBaseIterator {
    private final ICodeBase frontEndCodeBase;

    private final ICodeBaseIterator delegateCodeBaseIterator;

    public DelegatingCodeBaseIterator(ICodeBase frontEndCodeBase, IScannableCodeBase delegateCodeBase)
            throws InterruptedException {
        this.frontEndCodeBase = frontEndCodeBase;
        this.delegateCodeBaseIterator = delegateCodeBase.iterator();
    }

    /*
     * (non-Javadoc)
     *
     * @see edu.umd.cs.findbugs.classfile.ICodeBaseIterator#hasNext()
     */
    @Override
    public boolean hasNext() throws InterruptedException {
        return delegateCodeBaseIterator.hasNext();
    }

    /*
     * (non-Javadoc)
     *
     * @see edu.umd.cs.findbugs.classfile.ICodeBaseIterator#next()
     */
    @Override
    public ICodeBaseEntry next() throws InterruptedException {
        ICodeBaseEntry delegateCodeBaseEntry = delegateCodeBaseIterator.next();
        return new DelegatingCodeBaseEntry(frontEndCodeBase, delegateCodeBaseEntry);
    }

}