/* Soot - a J*va Optimization Framework
* Copyright (C) 2002 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.util;
import java.util.*;
/** A class that numbers strings, so they can be placed in bitsets.
*
* @author Ondrej Lhotak
*/
public class StringNumberer extends ArrayNumberer {
HashMap<String, NumberedString> stringToNumbered = new HashMap<String, NumberedString>(1024);
public NumberedString find( String s ) {
NumberedString ret = stringToNumbered.get( s );
if( ret == null ) {
stringToNumbered.put( s, ret = new NumberedString(s) );
add( ret );
}
return ret;
}
public NumberedString findOrAdd( String s ) {
NumberedString ret = stringToNumbered.get( s );
if( ret == null ) {
stringToNumbered.put( s, ret = new NumberedString(s) );
add( ret );
}
return ret;
}
}