import edu.neu.ccs.demeter.dj.*;
import java.util.*;
import edu.neu.ccs.demeter.*;
 class Any_vertex_List implements java.util.Enumeration, Cloneable {
  protected Nonempty_Any_vertex_List first;
  public Nonempty_Any_vertex_List get_first() { return first;   }
  public void set_first(Nonempty_Any_vertex_List new_first) { first = new_first;   }
  public Any_vertex_List() { super();   }
  public Any_vertex_List(Nonempty_Any_vertex_List first) {
    super();
    set_first(first);
    }
  public static Any_vertex_List parse(java.io.Reader in) throws ParseException { return new Parser(in)._Any_vertex_List();   }
  public static Any_vertex_List parse(java.io.InputStream in) throws ParseException { return new Parser(in)._Any_vertex_List();   }
  public static Any_vertex_List parse(String s) {
    try { return parse(new java.io.StringReader(s)); }
    catch (ParseException e) {
      throw new RuntimeException(e.toString());
    }
    }
    void universal_trv0_bef(UniversalVisitor _v_) {
    ((UniversalVisitor) _v_).before(this);
  }

    void universal_trv0_aft(UniversalVisitor _v_) {
    ((UniversalVisitor) _v_).after(this);
  }

    void universal_trv0(UniversalVisitor _v_) {
    universal_trv0_bef(_v_);
    if (first != null) {
      ((UniversalVisitor) _v_).before_first(this, first);
      first.universal_trv0(_v_);
      ((UniversalVisitor) _v_).after_first(this, first);
    }
    universal_trv0_aft(_v_);
  }

    void __trav_display_Cd_graph_trv_bef(DisplayVisitor __v0) {
    ((DisplayVisitor) __v0).before(this);
  }

    void __trav_display_Cd_graph_trv_aft(DisplayVisitor __v0) {
    ((DisplayVisitor) __v0).after(this);
  }

    void __trav_display_Cd_graph_trv(DisplayVisitor __v0) {
    __trav_display_Cd_graph_trv_bef(__v0);
    if (first != null) {
      ((DisplayVisitor) __v0).before_first(this, first);
      first.__trav_display_Cd_graph_trv(__v0);
      ((UniversalVisitor) __v0).after_first(this, first);
    }
    __trav_display_Cd_graph_trv_aft(__v0);
  }

    void __trav_checkDefined_Cd_graph_trv_bef(__V_Cd_graph_checkDefined __v0) {  }

    void __trav_checkDefined_Cd_graph_trv_aft(__V_Cd_graph_checkDefined __v0) {  }

    void __trav_checkDefined_Cd_graph_trv(java.util.BitSet nodes, __V_Cd_graph_checkDefined __v0) {
    __trav_checkDefined_Cd_graph_trv_bef(__v0);
    if (first != null) {
      { java.util.BitSet newnodes = new java.util.BitSet();
        newnodes.set(1);
        newnodes.and(nodes);
        if (!newnodes.equals(new java.util.BitSet())) {
          first.__trav_checkDefined_Cd_graph_trv(newnodes, __v0);
        }
      }
    }
    __trav_checkDefined_Cd_graph_trv_aft(__v0);
  }

    void __trav_uniqueparts_Cd_graph_trv_bef(__V_Cd_graph_uniqueparts __v0) {  }

    void __trav_uniqueparts_Cd_graph_trv_aft(__V_Cd_graph_uniqueparts __v0) {  }

    void __trav_uniqueparts_Cd_graph_trv(java.util.BitSet nodes, __V_Cd_graph_uniqueparts __v0) {
    __trav_uniqueparts_Cd_graph_trv_bef(__v0);
    if (first != null) {
      { java.util.BitSet newnodes = new java.util.BitSet();
        newnodes.set(2);
        newnodes.and(nodes);
        if (!newnodes.equals(new java.util.BitSet())) {
          first.__trav_uniqueparts_Cd_graph_trv(newnodes, __v0);
        }
      }
    }
    __trav_uniqueparts_Cd_graph_trv_aft(__v0);
  }

    void __trav_check_for_inheritence_Cd_graph_trv_bef(__V_Cd_graph_check_for_inheritence __v0) {  }

    void __trav_check_for_inheritence_Cd_graph_trv_aft(__V_Cd_graph_check_for_inheritence __v0) {  }

    void __trav_check_for_inheritence_Cd_graph_trv(java.util.BitSet nodes, __V_Cd_graph_check_for_inheritence __v0) {
    __trav_check_for_inheritence_Cd_graph_trv_bef(__v0);
    if (first != null) {
      { java.util.BitSet newnodes = new java.util.BitSet();
        newnodes.set(2);
        newnodes.and(nodes);
        if (!newnodes.equals(new java.util.BitSet())) {
          first.__trav_check_for_inheritence_Cd_graph_trv(newnodes, __v0);
        }
      }
    }
    __trav_check_for_inheritence_Cd_graph_trv_aft(__v0);
  }

    void __trav_get_SuperClasses_Cd_graph_trv_bef(__V_Cd_graph_get_SuperClasses __v0) {  }

    void __trav_get_SuperClasses_Cd_graph_trv_aft(__V_Cd_graph_get_SuperClasses __v0) {  }

    void __trav_get_SuperClasses_Cd_graph_trv(java.util.BitSet nodes, __V_Cd_graph_get_SuperClasses __v0) {
    __trav_get_SuperClasses_Cd_graph_trv_bef(__v0);
    if (first != null) {
      { java.util.BitSet newnodes = new java.util.BitSet();
        newnodes.set(2);
        newnodes.and(nodes);
        if (!newnodes.equals(new java.util.BitSet())) {
          first.__trav_get_SuperClasses_Cd_graph_trv(newnodes, __v0);
        }
      }
    }
    __trav_get_SuperClasses_Cd_graph_trv_aft(__v0);
  }

  
  private Nonempty_Any_vertex_List tail;
  public void addElement(Any_vertex e) { 
    checktail(); 
    if (tail == null) {
      first = new Nonempty_Any_vertex_List(e,null); tail = first;
    } else {
	tail.set_next(new Nonempty_Any_vertex_List(e,null)); tail = tail.get_next();
    }
  }

  public void push(Any_vertex e) { first = new Nonempty_Any_vertex_List(e,first); }

  public java.util.Enumeration elements() { return new Any_vertex_List(first); } 

  public int size() {
    int i= 0;
    for (java.util.Enumeration e=elements(); e.hasMoreElements(); i++)
	e.nextElement();
    return i;
  }
  public boolean isEmpty() { return (first == null); }

  public boolean hasMoreElements() { return (first != null); }

  public Object nextElement() {
    Any_vertex car = first.get_it();
    first = first.get_next();
    return (Object) car;
  }

  private void checktail() {
    if (tail == null && first != null) {
	tail = first;
	while (tail.get_next() != null) tail = tail.get_next();
    }
  }
  public boolean contains(Any_vertex e) {
    java.util.Enumeration en = this.elements();
    while (en.hasMoreElements())
	if (e.equals((Any_vertex) en.nextElement())) return true;
    return false;
  }

}