DependenceTag.java :  » Code-Analyzer » soot » soot » jimple » toolkits » pointer » Java Open Source

/* Soot - a J*va Optimization Framework
 * Copyright (C) 2003 Ondrej Lhotak
 *
 * 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 soot.jimple.toolkits.pointer;
import soot.tagkit.*;

public class DependenceTag implements Tag
{
    private final static String NAME = "DependenceTag";
    protected short read = -1;
    protected short write = -1;
    protected boolean callsNative = false;
    
    public boolean setCallsNative() {
  boolean ret = !callsNative;
  callsNative = true;
  return ret;
    }

    protected void setRead( short s ) {
  read = s;
    }

    protected void setWrite( short s ) {
  write = s;
    }

    public String getName()
    {
  return NAME;
    }

    public byte[] getValue() {
  byte[] ret = new byte[5];
  ret[0] = (byte) ( (read >> 8) & 0xff );
  ret[1] = (byte) ( read  & 0xff );
  ret[2] = (byte) ( (write >> 8) & 0xff );
  ret[3] = (byte) ( write  & 0xff );
  ret[4] = (byte) ( callsNative ? 1 : 0 );
  return ret;
    }

    public String toString()
    {
  StringBuffer buf = new StringBuffer();
  if( callsNative ) buf.append( "SECallsNative\n" );
  if( read >= 0 ) buf.append( "SEReads : "+read+"\n" );
  if( write >= 0 ) buf.append( "SEWrites: "+write+"\n" );
  return buf.toString();
    }
}