com.yworks.yguard.obf.classfile.ExceptionInfo Maven / Gradle / Ivy

Go to download
/**
 * YGuard -- an obfuscation library for Java(TM) classfiles.
 *
 * Original Copyright (c) 1999 Mark Welsh ([email protected])
 * Modifications Copyright (c) 2002 yWorks GmbH ([email protected])
 *
 * 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 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
 *
 * The author may be contacted at [email protected] 
 *
 * Java and all Java-based marks are trademarks or registered 
 * trademarks of Sun Microsystems, Inc. in the U.S. and other countries.
 */
package com.yworks.yguard.obf.classfile;

import java.io.*;
import java.util.*;

/**
 * Representation of an Exception table entry.
 *
 * @author      Mark Welsh
 */
public class ExceptionInfo
{
    // Constants -------------------------------------------------------------
    public static final int CONSTANT_FIELD_SIZE = 8;


    // Fields ----------------------------------------------------------------
    private int u2startpc;
    private int u2endpc;
    private int u2handlerpc;
    private int u2catchType;


    // Class Methods ---------------------------------------------------------
    public static ExceptionInfo create(DataInput din) throws java.io.IOException
    {
        ExceptionInfo ei = new ExceptionInfo();
        ei.read(din);
        return ei;
    }


    // Instance Methods ------------------------------------------------------
    private ExceptionInfo() {}
    private void read(DataInput din) throws java.io.IOException
    {
        u2startpc = din.readUnsignedShort();
        u2endpc = din.readUnsignedShort();
        u2handlerpc = din.readUnsignedShort();
        u2catchType = din.readUnsignedShort();
    }

    /** Export the representation to a DataOutput stream. */
    public void write(DataOutput dout) throws java.io.IOException
    {
        dout.writeShort(u2startpc);
        dout.writeShort(u2endpc);
        dout.writeShort(u2handlerpc);
        dout.writeShort(u2catchType);
    }
}