--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/main/gov/nasa/jpf/util/automaton/State.java	Fri Jan 23 10:14:01 2015 -0800
@@ -0,0 +1,112 @@
+/*
+ * Copyright (C) 2014, United States Government, as represented by the
+ * Administrator of the National Aeronautics and Space Administration.
+ * All rights reserved.
+ *
+ * The Java Pathfinder core (jpf-core) platform is 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.
+ */
+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);
+    }
+  }
+}