package it.unimi.dsi.compression;
/*
* DSI utilities
*
* Copyright (C) 2005-2009 Sebastiano Vigna
*
* 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 program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*
*/
import it.unimi.dsi.bits.BitVector;
/** A codec based on a set of prefix-free codewords.
*
* <p>Prefix codec work by building a vector of prefix-free codewords, one for each symbol. The
* method {@link #codeWords()} returns that vector. Moreover, this interface
* strengthens the return type of {@link #coder()} to {@link PrefixCoder}.
*/
public interface PrefixCodec extends Codec {
/** Returns the vector of prefix-free codewords used by this prefix coder.
*
* @return the vector of prefix-free codewords used by this prefix coder.
*/
public BitVector[] codeWords();
public PrefixCoder coder();
}