Project: bml_realizer License: BSD Dependencies: bml_msgs bml_srvs bml_lib rosjava Used by: None All Packages

bml_realizer/src/edu/wpi/hri/bml/net/Place.java Go to the documentation of this file. /* * Software License Agreement (BSD License) * * Copyright (c) 2010, Worcester Polytechnic Institute * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * * Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * Redistributions in binary form must reproduce the above * copyright notice, this list of conditions and the following * disclaimer in the documentation and/or other materials provided * with the distribution. * * Neither the name of Worcester Polytechnic Institute. nor the names * of its contributors may be used to endorse or promote products * derived from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE * POSSIBILITY OF SUCH DAMAGE. */ package edu.wpi.hri.bml.net; import java.util.HashSet; import java.util.List; import java.util.Set; import edu.wpi.hri.log.Logger; public abstract class Place extends PetriPart { private Transition input; private Set<Transition> outputs; private boolean ready; private final String name; protected Place(ThreadGroup group, Logger sublog, String name) { super(group, sublog, name); this.name = name; input = null; outputs = new HashSet<Transition>(); ready = false; } public String getName() { return name; } @Override protected boolean checkRequirements() { return ready; } @Override protected void sendTokens() { sendTokensTo(outputs); } @Override protected void tokenFrom(PetriPart from) { if (from instanceof Transition) ready = ready || (input == (Transition) from); } @Override public boolean existsCycle(List<PetriPart> beento) { if (beento.contains(this)) return true; beento.add(this); boolean cycle = false; for (Transition t : outputs) cycle = cycle || t.existsCycle(beento); beento.remove(this); return cycle; } public boolean setInput(Transition t) { if (input == null) { input = t; return true; } else return false; } public Transition getInput() { return input; } public boolean addOutput(Transition t) { return outputs.add(t); } public Set<Transition> getOutputs() { return outputs; } public boolean replaceOutput(Transition oldt, Transition newt) { if (outputs.contains(oldt)) { if (outputs.contains(newt)) return outputs.remove(oldt); else return outputs.add(newt) && outputs.remove(oldt); } else return false; } public boolean replaceInput(Transition oldt, Transition newt) { if (input == oldt) { input = newt; return true; } else return false; } }

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bml_realizer
Author(s): Aaron Holroyd (aholroyd (at) wpi (dot) edu)
autogenerated on Fri Sep 9 10:44:12 2011