/* 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.spark.fieldrw;
import soot.tagkit.*;
import java.util.*;
import soot.*;
/** Implements a tag that holds a list of fields read or written by a call. */
public abstract class FieldRWTag implements Tag {
String fieldNames = new String();
FieldRWTag( Set fields ) {
StringBuffer sb = new StringBuffer();
boolean first = true;
for( Iterator fieldIt = fields.iterator(); fieldIt.hasNext(); ) {
final SootField field = (SootField) fieldIt.next();
if( !first ) sb.append( "%" );
first = false;
sb.append( field.getDeclaringClass().getName() );
sb.append( ":" );
sb.append( field.getName() );
}
fieldNames = sb.toString();
}
public abstract String getName();
public byte[] getValue() {
byte[] bytes = fieldNames.getBytes();
byte[] ret = new byte[bytes.length+2];
ret[0] = (byte)( bytes.length/256 );
ret[1] = (byte)( bytes.length%256 );
System.arraycopy( bytes, 0, ret, 2, bytes.length );
return ret;
}
public String toString() {
return getName()+fieldNames;
}
}