// File: stringcell2.C
//
// Implementation of the StringCell class
// No debugging statements

#include <iostream.h>
#include <iomanip.h>
#include <stdlib.h>
#include "stringcell.h"

int StringCell::idvar=0 ;

// make a copy of this StringCell and return a pointer to the copy
//
ListCell *StringCell::clone() const {
    StringCell *sptr = new StringCell(*this) ;
    if (sptr == NULL) {
       cerr << "Out of memory in StringCell::clone()" << endl ;
       exit(1) ;
    }
    return sptr ;
}


// Compare a ListCell with a StringCell
//
int StringCell::cmp(const ListCell& cell) const {

#ifndef NDEBUG
   cerr << "StringCell: compare function" << endl ;
#endif

   if (cell.id() != &StringCell::idvar) { // if not a StringCell
      return cell.id() < &StringCell::idvar ? 1 : -1 ;
   }

   StringCell *sptr = (StringCell *) & cell ;
   if (data < sptr->data) return -1 ;
   if (data == sptr->data) return 0 ;
   return 1 ;
}