Panzer_Parameter_decl.hpp

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//           Panzer: A partial differential equation assembly
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#ifndef PANZER_EVALUATOR_PARAMETER_DECL_HPP
#define PANZER_EVALUATOR_PARAMETER_DECL_HPP
 
#include "PanzerDiscFE_config.hpp"
 
#include "Phalanx_Evaluator_Macros.hpp"
#include "Phalanx_MDField.hpp"
#include "Teuchos_RCP.hpp"
 
#include "Panzer_ParameterLibrary.hpp"
 
#include "Panzer_Evaluator_WithBaseImpl.hpp"
 
namespace panzer {
    
  template <typename EvalT> class ScalarParameterEntry;
 
  template<typename EvalT, typename TRAITS>
  class Parameter : 
    public panzer::EvaluatorWithBaseImpl<TRAITS>,
    public PHX::EvaluatorDerived<EvalT, TRAITS> {
  
  public:
    
    Parameter(const std::string parameter_name,
        const std::string field_name,
        const Teuchos::RCP<PHX::DataLayout>& data_layout,
        panzer::ParamLib& param_lib);
    
    void evaluateFields(typename TRAITS::EvalData ud);
    
  private:
    
    typedef typename EvalT::ScalarT ScalarT;
    
    PHX::MDField<ScalarT, Cell, Point> target_field;
    
    std::size_t cell_data_size;
    
    ScalarT initial_value;
    
    Teuchos::RCP<panzer::ScalarParameterEntry<EvalT> > param;
  };
  
}
 
#endif