Register.h

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// # Register.h: Register Measure UDFs
// # Copyright (C) 2011
// # Associated Universities, Inc. Washington DC, USA.
// #
// # This library is free software; you can redistribute it and/or modify it
// # under the terms of the GNU Library General Public License as published by
// # the Free Software Foundation; either version 2 of the License, or (at your
// # option) any later version.
// #
// # This library is distributed in the hope that it will be useful, but WITHOUT
// # ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
// # FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Library General Public
// # License for more details.
// #
// # You should have received a copy of the GNU Library General Public License
// # along with this library; if not, write to the Free Software Foundation,
// # Inc., 675 Massachusetts Ave, Cambridge, MA 02139, USA.
// #
// # Correspondence concerning AIPS++ should be addressed as follows:
// #        Internet email: casa-feedback@nrao.edu.
// #        Postal address: AIPS++ Project Office
// #                        National Radio Astronomy Observatory
// #                        520 Edgemont Road
// #                        Charlottesville, VA 22903-2475 USA
 
#ifndef MEAS_REGISTER_H
#define MEAS_REGISTER_H
 
#include <casacore/casa/aips.h>
#include <casacore/tables/TaQL/UDFBase.h>
#include <ostream>
 
// <group name=MeasUDF>
// This function registers the TaQL user defined functions handling
// Measure conversions.
// It is called when the dynamic library casa_meas.so/dylib is loaded.
 
extern "C" {
void register_meas();
}
 
// </group>
 
namespace casacore {
// <synopsis>
// General meas function to show the available functions.
// </synopsis>
class HelpMeasUDF : public UDFBase {
 public:
  // Function to create an object.
  static UDFBase* makeHELP(const String&);
 
  // Setup the object.
  virtual void setup(const Table&, const TaQLStyle&);
 
  // Get the value.
  virtual String getString(const TableExprId& id);
 
  // Show the possible functions.
  static void showFuncsPosition(std::ostream&, Bool showTypes);
  static void showFuncsEpoch(std::ostream&, Bool showTypes);
  static void showFuncsDirection(std::ostream&, Bool showTypes);
  static void showFuncsEarthMagnetic(std::ostream&, Bool showTypes);
  static void showFuncsFrequency(std::ostream&, Bool showTypes);
  static void showFuncsDoppler(std::ostream&, Bool showTypes);
  static void showFuncsRadialVelocity(std::ostream&, Bool showTypes);
};
}  // namespace casacore
 
#endif