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.incremental.dfa; 018 019/** 020 * Tri-state acceptance value. 021 * 022 * @author Malte Isberner <malte.isberner@gmail.com> 023 * 024 */ 025public enum Acceptance { 026 FALSE, 027 TRUE, 028 DONT_KNOW; 029 030 /** 031 * Retrieves the corresponding acceptance value (either {@link #TRUE} or {@link #FALSE}) 032 * for a given boolean value. 033 * @param val the boolean value 034 * @return the corresponding acceptance value 035 */ 036 public static Acceptance fromBoolean(boolean val) { 037 return val ? TRUE : FALSE; 038 } 039 040 041 public boolean conflicts(boolean val) { 042 if(this == DONT_KNOW) 043 return false; 044 return ((this == TRUE) != val); 045 } 046}