simple_spin_insertion_w.h

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// -*- C++ -*-
/*! \file
 *  \brief Gamma insertions
 */
 
#ifndef __simple_gamma_insertion_w_h__
#define __simple_gamma_insertion_w_h__
 
#include "meas/hadron/spin_insertion.h"
 
namespace Chroma 
{
  //! Name and registration
  /*! @ingroup hadron */
  namespace SimpleSpinInsertionEnv
  {
    extern const std::string name;
    bool registerAll();
  
 
    //! Params for simple spin insertion
    /*! @ingroup hadron */
    struct Params
    {
      Params() {}
      Params(XMLReader& in, const std::string& path);
      void writeXML(XMLWriter& in, const std::string& path) const;
    
      int      gamma;          /*!< gamma value of insertion */
    };
 
 
    //! Gamma insertion
    /*! @ingroup hadron
     *
     * Simple gamma multiplication of an object
     */
    template<typename T>
    class LeftSpinInsert : public SpinInsertion<T>
    {
    public:
      //! Full constructor
      LeftSpinInsert(const Params& p) : params(p) {}
      
      //! Spin insert
      T operator()(const T& quark) const {return Gamma(params.gamma) * quark;}
 
    private:
      //! Hide partial constructor
      LeftSpinInsert() {}
 
    private:
      Params  params;   /*!< spin insertion params */
    };
 
 
    //! Gamma insertion
    /*! @ingroup hadron
     *
     * Simple gamma multiplication of an object
     */
    template<typename T>
    class RightSpinInsert : public SpinInsertion<T>
    {
    public:
      //! Full constructor
      RightSpinInsert(const Params& p) : params(p) {}
      
      //! Spin insert
      T operator()(const T& quark) const {return quark * Gamma(params.gamma);}
 
    private:
      //! Hide partial constructor
      RightSpinInsert() {}
 
    private:
      Params  params;   /*!< spin insertion params */
    };
 
  }  // end namespace
 
  //! Reader
  /*! @ingroup hadron */
  void read(XMLReader& xml, const std::string& path, SimpleSpinInsertionEnv::Params& param);
 
  //! Writer
  /*! @ingroup hadron */
  void write(XMLWriter& xml, const std::string& path, const SimpleSpinInsertionEnv::Params& param);
 
}  // end namespace Chroma
 
#endif