SundanceExprFieldWrapper.hpp

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// 
//                              Sundance
//                 Copyright (2005) Sandia Corporation
// 
// Copyright (year first published) Sandia Corporation.  Under the terms 
// of Contract DE-AC04-94AL85000 with Sandia Corporation, the U.S. Government 
// retains certain rights in this software.
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// This library is free software; you can redistribute it and/or modify
// it under the terms of the GNU Lesser General Public License as
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// Lesser General Public License for more details.
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#ifndef SUNDANCE_EXPRFIELDWRAPPER_H
#define SUNDANCE_EXPRFIELDWRAPPER_H


#include "SundanceDefs.hpp"
#include "PlayaHandleable.hpp"
#include "SundanceFieldBase.hpp"
#include "SundanceDiscreteFunction.hpp"
#include "SundanceDiscreteSpace.hpp"
#include "SundanceExpr.hpp"

namespace Sundance
{
using namespace Teuchos;

    
/**
 *
 */
class ExprFieldWrapper : public FieldBase
{
public:
  /** */
  ExprFieldWrapper(const Expr& expr) ;

  /** virtual dtor */
  virtual ~ExprFieldWrapper(){;}

  /** */
  virtual double getData(int cellDim, int cellID, int elem) const ;

  /** */
  virtual bool isDefined(int cellDim, int cellID, int elem) const ;

  /** */
  virtual int numElems() const {return Expr_size_;}

  /** */
  virtual bool isPointData() const {return isPointData_;}

  /* */
  GET_RCP(FieldBase);
  /**
   * Return the cell filter on which this field is defined 
   */
  virtual const CellFilter& domain() const 
    { // here we return only the first element ()
      return discreteSpace_.cellFilters(indices_[0][0]);
    }

public:
  Expr expr_;

  // this field should be unique for all the variables
  const DiscreteFunctionData* df_;

  DiscreteSpace discreteSpace_;

  // ---- this field can be expicitly asked -----
  //RCP<DOFMapBase> map_;

  Array< Array<int> > indices_;

  int Expr_size_;

  bool isPointData_;
};
}



#endif