//
// Copyright (C) 2011 United transitions Government as represented by the
// Administrator of the National Aeronautics and Space Administration
// (NASA). All Rights Reserved.
//
// This software is distributed under the NASA Open Source Agreement
// (NOSA), version 1.3. The NOSA has been approved by the Open Source
// Initiative. See the file NOSA-1.3-JPF at the top of the distribution
// directory tree for the complete NOSA document.
//
// THE SUBJECT SOFTWARE IS PROVIDED "AS IS" WITHOUT ANY WARRANTY OF ANY
// KIND, EITHER EXPRESSED, IMPLIED, OR STATUTORY, INCLUDING, BUT NOT
// LIMITED TO, ANY WARRANTY THAT THE SUBJECT SOFTWARE WILL CONFORM TO
// SPECIFICATIONS, ANY IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR
// A PARTICULAR PURPOSE, OR FREEDOM FROM INFRINGEMENT, ANY WARRANTY THAT
// THE SUBJECT SOFTWARE WILL BE ERROR FREE, OR ANY WARRANTY THAT
// DOCUMENTATION, IF PROVIDED, WILL CONFORM TO THE SUBJECT SOFTWARE.
//
package gov.nasa.jpf.util.automaton;
import java.io.PrintStream;
/**
*
*/
public class State {
static final int TRANSITION_INC = 4;
protected int id;
protected String label;
protected int nTransitions;
protected Transition[] transitions;
public State (String label, int numberOfTransitions){
this.label = label;
transitions = new Transition[numberOfTransitions];
}
public State (String label){
this( label, TRANSITION_INC);
}
public State (){
this( null, TRANSITION_INC);
}
// to be set by Automaton.addState()
protected void setId(int id){
this.id = id;
if (label == null){
label = Integer.toString(id);
}
}
public int getId(){
return id;
}
public String getLabel(){
return label;
}
public int getNumberOfTransitions(){
return nTransitions;
}
public Transition getTransition (int idx){
return transitions[idx];
}
public void addTransition(Transition newTransition){
if (nTransitions == transitions.length){
Transition[] a = new Transition[nTransitions + TRANSITION_INC];
System.arraycopy(transitions, 0, a, 0, nTransitions);
transitions = a;
}
transitions[nTransitions] = newTransition;
newTransition.setId(nTransitions);
nTransitions++;
}
public void addTransitions(Transition ... newTransitions){
int n = nTransitions + newTransitions.length;
if (n >= transitions.length){
Transition[] a = new Transition[n];
System.arraycopy(transitions, 0, a, 0, nTransitions);
transitions = a;
}
for (int i=0; i<newTransitions.length; i++){
transitions[nTransitions] = newTransitions[i];
nTransitions++;
}
}
public void enter(){
// just here to be overridden, for Moore machines
}
public void exit(){
// just here to be overridden, for Moore machines
}
public void printOn (PrintStream ps){
ps.printf("\t[%d] State '%s'\n", id, label);
for (int i=0; i<nTransitions; i++){
transitions[i].printOn( ps);
}
}
}