class EIdent { };
class Cstring { };
template < class KEY, class VALUE, class HASHER > class HashMapIterator
{
public:
  virtual ~ HashMapIterator () { }
};

class ECell;
class ECell_ptr
{
  ECell *mp_element;
public:
    ECell * operator -> () const
  {
    return (mp_element);
  }
}
sicat_cmd_status;
class CellListIterator;
class ECellList
{
public:
  virtual CellListIterator * createIterator () const = 0;
  virtual ECell_ptr Find (const EIdent & anIdent) = 0;
};
class Foobar_Out
{
  virtual int get_channel () { }
public:
    Foobar_Out & operator << (const char *str);
  Foobar_Out & operator << (const Cstring & cstring);
};

class Foobar_Log:public Foobar_Out { };
extern Foobar_Log Foobar_LOG;
template < class KEY > class BagIterator
{
public:
  inline const KEY & operator * () const;
  inline int atEnd () const;
};

class EMaskView;
class ECell
{
public:
  virtual const EMaskView & getMaskView () const = 0;
};
class FoobarDatabase
{
public:
  const Cstring & getName (const EIdent & id) const;
  ECellList *getCellList ();
};
inline FoobarDatabase &
DB () { }

class EMaskView
{
public:
  inline BagIterator < EIdent > getCallerIterator () const;
};
struct DBHashFunctions
{
};
class CellListIterator:public HashMapIterator < EIdent, ECell *,
  DBHashFunctions >
{
};
class IdentSet
{
public:
  unsigned int getSize () const { }
  int isEmpty () const { }
};
class IdentSetIterator
{
public:
  IdentSetIterator (const IdentSet * p_source) { }
  int atEnd () const { }
  EIdent operator* () const { }
};
void
validate ()
{
  IdentSet complete_cell_ids;
  IdentSet incomplete_cell_ids;
  CellListIterator *p_cl_it = DB ().getCellList ()->createIterator ();
  delete p_cl_it;
  while (!incomplete_cell_ids.isEmpty ())
    {
      if (incomplete_cell_ids.getSize () < complete_cell_ids.getSize ())
	{
	  IdentSetIterator complete_cell_it (&complete_cell_ids);
	  while (!complete_cell_it.atEnd ())
	    {
	      BagIterator < EIdent > caller_it =
		DB ().getCellList ()->Find (*complete_cell_it)->
		getMaskView ().getCallerIterator ();
	      while (!caller_it.atEnd ())
		{
		  Foobar_LOG << DB ().getName (*caller_it) << " ";
		}
	    }
	}
    }
}