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.Objects; 020 021import net.automatalib.words.abstractimpl.AbstractAlphabet; 022 023public class ArrayAlphabet<I> extends AbstractAlphabet<I> { 024 025 protected final I[] symbols; 026 027 @SafeVarargs 028 public ArrayAlphabet(I ...symbols) { 029 this.symbols = symbols; 030 } 031 032 @Override 033 public I getSymbol(int index) throws IllegalArgumentException { 034 return symbols[index]; 035 } 036 037 @Override 038 public int getSymbolIndex(I symbol) throws IllegalArgumentException { 039 for(int i = 0; i < symbols.length; i++) { 040 if(Objects.equals(symbols[i], symbol)) 041 return i; 042 } 043 return -1; 044 } 045 046 @Override 047 public int size() { 048 return symbols.length; 049 } 050 051 /* (non-Javadoc) 052 * @see net.automatalib.words.abstractimpl.AbstractAlphabet#writeToArray(int, java.lang.Object[], int, int) 053 */ 054 @Override 055 public void writeToArray(int offset, Object[] array, int tgtOfs, int num) { 056 System.arraycopy(symbols, offset, array, tgtOfs, num); 057 } 058 059 060 061}