State2.java

Below is the syntax highlighted version of State2.java.

// Donna Gabai, dgabai, P01
// fall09 exam 2
// State object class for DFA.java
// dependencies: ST

public class State2{
  // instance variables
  private String type;
  private ST<Character, Integer> state;
  
  // constructor sets up the instance variables
  public State2(String type, ST<Character, Integer> st) {
    this.type = type;
    this.state = new ST<Character, Integer>();
    // copy all the states from the argument symbol table
    // into the instance variable symbol table
    for (char i : st) {
      int n = st.get(i);
      state.put(i, n);
    }
    
  }

  // return type of this state
  public String type() {
    return this.type;
  }
  
  // transition to next state based on input char
  public int next(char c) {
    int n;
    if (state.get(c) != null) n = state.get(c);
    else n = state.get('$');
    return n;
    
  }
}