content: package java_cup.runtime;
  
  /**
   * Creates the Symbols interface, which CUP uses as default
   *
   * @version last updated 27-03-2006
   * @author Michael Petter
   */
  
  /* *************************************************
    Interface SymbolFactory
    
    interface for creating new symbols  
    You can also use this interface for your own callback hooks
    Declare Your own factory methods for creation of Objects in Your scanner!
   ***************************************************/
  public interface SymbolFactory {
      // Factory methods
      /**
       * Construction with left/right propagation switched on
       */
      public Symbol newSymbol(String name, int id, Symbol left, Symbol right, Object value);
      public Symbol newSymbol(String name, int id, Symbol left, Symbol right);
      /**
       * Construction with left/right propagation switched off
       */
      public Symbol newSymbol(String name, int id, Object value);
      public Symbol newSymbol(String name, int id);
      /**
       * Construction of start symbol
       */
      public Symbol startSymbol(String name, int id, int state);
  }
  