Java tutorial
/* * CPAchecker is a tool for configurable software verification. * This file is part of CPAchecker. * * Copyright (C) 2007-2014 Dirk Beyer * All rights reserved. * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. * * * CPAchecker web page: * http://cpachecker.sosy-lab.org */ package org.sosy_lab.cpachecker.util.predicates.bdd; import jsylvan.JSylvan; import org.sosy_lab.cpachecker.util.predicates.interfaces.Region; import com.google.common.primitives.Longs; /** * Regions represented using Sylvan BDDs. */ public class SylvanBDDRegion implements Region { private final long bddRepr; SylvanBDDRegion(long pBDD) { bddRepr = pBDD; } @Override public boolean isTrue() { return bddRepr == JSylvan.getTrue(); } @Override public boolean isFalse() { return bddRepr == JSylvan.getFalse(); } long getBDD() { return bddRepr; } @Override public boolean equals(Object o) { if (o instanceof SylvanBDDRegion) { return bddRepr == ((SylvanBDDRegion) o).bddRepr; } return false; } @Override public int hashCode() { return Longs.hashCode(bddRepr); } @Override public String toString() { if (isTrue()) { return "true"; } else if (isFalse()) { return "false"; } else { return bddRepr + ""; } } }