SundanceExplicitFunctionalDerivativeElement.hpp

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#ifndef SUNDANCE_EXPLICITFUNCTIONALDERIVATIVEELEMENT_H
#define SUNDANCE_EXPLICITFUNCTIONALDERIVATIVEELEMENT_H


#include "SundanceDefs.hpp"
#include "SundanceScalarExpr.hpp"
#include "SundanceUnaryExpr.hpp"
#include "SundanceEvalContext.hpp"
#include "SundanceMultiSet.hpp"
#include "SundanceSet.hpp"
#include "SundanceMultipleDeriv.hpp"
#include "SundanceExprWithChildren.hpp"


namespace Sundance
{
using namespace Sundance;
using namespace Teuchos;





/** 
 * Scalar element of an explicit user-level functional derivative
 */
class ExplicitFunctionalDerivativeElement 
  : virtual public UnaryExpr
{
public:
  /** */
  ExplicitFunctionalDerivativeElement(
    const RCP<ScalarExpr>& arg,
    const Deriv& fd
    );
            
  /** virtual destructor */
  virtual ~ExplicitFunctionalDerivativeElement() {;}

  /** */
  virtual Set<MultipleDeriv> 
  internalFindW(int order, const EvalContext& context) const ;


  /** */
  virtual Set<MultipleDeriv> 
  internalFindV(int order, const EvalContext& context) const ;


  /** */
  virtual Set<MultipleDeriv> 
  internalFindC(int order, const EvalContext& context) const ;


  /** */
  virtual RCP<Array<Set<MultipleDeriv> > > 
  internalDetermineR(const EvalContext& context,
    const Array<Set<MultipleDeriv> >& RInput) const ;


  /** Write self in text form */
  virtual std::ostream& toText(std::ostream& os, bool paren) const ;

  /** Write in XML */
  virtual XMLObject toXML() const ;

  /** */
  virtual RCP<ExprBase> getRcp() {return rcp(this);}

  /** */
  void reset() const ;

  /** */
  Evaluator* createEvaluator(const EvaluatableExpr* expr,
    const EvalContext& context) const ;

  /** */
  virtual bool lessThan(const ScalarExpr* other) const ;


  /** */
  const Deriv& fd() const {return fd_;}

protected:
private:
  Deriv fd_;
};

}


#endif