// File: bstrstack.h
//
// Derive a BString stack from the GenStack class

#ifndef _bstrstack_h
#define _bstrstack_h

#include "bstring2.h"
#include "genstack.h"

class BStringStack : public GenStack { // public derivation of GenStack class

public:
   BStringStack() ;         // constructor
   ~BStringStack() ;        // destructor

  // overide GenStack operations
  //
   void push(const BString&) ;  // add a string to the top of stack
   BString pop() ;              // return and delete from top of stack
   BString top() ;              // return string at the top of stack

private:
   static int cmp (void *, void *) ;    // string comparison
   static void prt (void *) ;           // print a string
} ;

#endif