001/* Copyright (C) 2013 TU Dortmund
002 * This file is part of AutomataLib, http://www.automatalib.net/.
003 * 
004 * AutomataLib is free software; you can redistribute it and/or
005 * modify it under the terms of the GNU Lesser General Public
006 * License version 3.0 as published by the Free Software Foundation.
007 * 
008 * AutomataLib is distributed in the hope that it will be useful,
009 * but WITHOUT ANY WARRANTY; without even the implied warranty of
010 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
011 * Lesser General Public License for more details.
012 * 
013 * You should have received a copy of the GNU Lesser General Public
014 * License along with AutomataLib; if not, see
015 * http://www.gnu.de/documents/lgpl.en.html.
016 */
017package net.automatalib.words.impl;
018
019import java.util.List;
020
021import net.automatalib.words.abstractimpl.AbstractAlphabet;
022
023public class ListAlphabet<I> extends AbstractAlphabet<I> {
024        
025        private final List<? extends I> list;
026
027        public ListAlphabet(List<? extends I> list) {
028                this.list = list;
029        }
030
031        @Override
032        public I getSymbol(int index) throws IllegalArgumentException {
033                return list.get(index);
034        }
035
036        @Override
037        public int getSymbolIndex(I symbol) throws IllegalArgumentException {
038                int idx = list.indexOf(symbol);
039                if(idx == -1)
040                        throw new IllegalArgumentException("Symbol " + symbol + " is not contained in the alphabet");
041                return idx;
042        }
043
044        @Override
045        public I get(int index) {
046                return list.get(index);
047        }
048
049        @Override
050        public int size() {
051                return list.size();
052        }
053
054}