common-services.cpp

Go to the documentation of this file.

/*
  CommonServices  -  integrate some library facilities with common system services
 
   Copyright (C)
     2012,            Hermann Vosseler <Ichthyostega@web.de>
 
 **Lumiera** is free software; you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
 Free Software Foundation; either version 2 of the License, or (at your
 option) any later version. See the file COPYING for further details.
 
* *****************************************************************/
 
 
#include "lib/error.hpp"
#include "lib/format-string.hpp"
 
namespace error = lumiera::error;
 
 
 
/* =========== Advice System integrations ================== */
 
#include "lib/time/timequant.hpp"
#include "lib/time/quantiser.hpp"
#include "lib/time/timecode.hpp"
#include "lib/time/mutation.hpp"
#include "common/advice.hpp"
 
 
namespace lib {
namespace time {
  
  namespace { // implementation helper to access the Advice system...
    
    using util::_Fmt;
    
    namespace advice = lumiera::advice;
    
    
    PQuant
    retrieveQuantiser (Symbol gridID)
    {
      advice::Request<PQuant> query(gridID);
      PQuant grid_found = query.getAdvice();
      if (!grid_found)
        throw error::Logic (_Fmt("unable to resolve the time quantisation grid with ID=\"%s\" -- was it already defined?")
                                % gridID
                           , LUMIERA_ERROR_UNKNOWN_GRID);
      return grid_found;
    }
  }//(End) implementation helpers
  
  
  QuTime::QuTime (TimeValue raw, Symbol gridID)
    : Time(raw)
    , quantiser_(retrieveQuantiser (gridID))
    { }
  
  
  PQuant
  Quantiser::retrieve (Symbol gridID)
  {
    return retrieveQuantiser (gridID);
  }
  
  FrameCnt
  FrameNr::quant (Time const& time, Symbol gridID)
  {
    return Quantiser::retrieve(gridID)->gridPoint (time);
  }
  
  
  
  EncapsulatedMutation
  Mutation::nudge (int adjustment, Symbol gridID)
  {
    return nudge (adjustment, Quantiser::retrieve(gridID));
  }
 
  
  
}} // namespace lib::time