SHash.h

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#ifndef OPAL_SHash_HH
#define OPAL_SHash_HH
 
// ------------------------------------------------------------------------
// $RCSfile: SHash.h,v $
// ------------------------------------------------------------------------
// $Revision: 1.1.1.1 $
// ------------------------------------------------------------------------
// Copyright: see Copyright.readme
// ------------------------------------------------------------------------
//
// Class: SHash
//
// ------------------------------------------------------------------------
//
// $Date: 2000/03/27 09:33:42 $
// $Author: Andreas Adelmann $
//
// ------------------------------------------------------------------------
 
#include <iosfwd>
#include "AbstractObjects/Expressions.h"
 
namespace Expressions {
 
    // Template class SHash
    // ----------------------------------------------------------------------
 
    // Forward declaration.
    class ATable;
 
    //  Represents a ``#'' value in a TABLE() expression.
 
    class SHash : public Scalar<double> {
    public:
        //  Store the TABLE() expression which will return the value of ``#''.
        explicit SHash(const ATable&);
 
        SHash(const SHash&);
        virtual ~SHash();
 
        virtual Scalar<double>* clone() const;
 
        virtual double evaluate() const;
 
        virtual void print(std::ostream& str, int precedence = 99) const;
 
    private:
        // Not implemented.
        SHash();
        void operator=(const SHash&);
 
        // The ATable object to which this SHash belongs.
        // When  evaluate()  is called, the value for  #  is obtained from
        // "itsTable".
        const ATable& itsTable;
    };
 
}  // namespace Expressions
 
#endif  // OPAL_SHash_HH