DerivedNodeFactory.cpp

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/*
---------------------------------------------------------------------------
 
    This file is part of uHAL.
 
    uHAL is a hardware access library aod programming framework
    originally developed for upgrades of the Level-1 trigger of the CMS
    experiment at CERN.
 
    uHAL 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 3 of the License, or
    (at your option) any later version.
 
    uHAL 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 General Public License for more details.
 
    You should have received a copy of the GNU General Public License
    along with uHAL.  If not, see <http://www.gnu.org/licenses/>.
 
 
      Andrew Rose, Imperial College, London
      email: awr01 <AT> imperial.ac.uk
 
      Marc Magrans de Abril, CERN
      email: marc.magrans.de.abril <AT> cern.ch
 
---------------------------------------------------------------------------
*/
 
#include "uhal/DerivedNodeFactory.hpp"
 
 
#include <stddef.h>                          // for NULL
 
#include <boost/shared_ptr.hpp>              // for shared_ptr
#include <boost/unordered_map.hpp>            // for operator!=, operator==
 
#include "uhal/log/LogLevels.hpp"            // for Warning
#include "uhal/log/log_inserters.quote.hpp"  // for Quote, _Quote
#include "uhal/log/log.hpp"
#include "uhal/Node.hpp"
 
 
namespace uhal
{
 
  boost::shared_ptr<DerivedNodeFactory> DerivedNodeFactory::mInstance;
 
 
  DerivedNodeFactory::DerivedNodeFactory ()
  {
  }
 
 
  DerivedNodeFactory::~DerivedNodeFactory ()
  {
  }
 
 
  DerivedNodeFactory& DerivedNodeFactory::getInstance()
  {
    if ( ! mInstance )
    {
      mInstance.reset(new DerivedNodeFactory());
    }
 
    return *mInstance;
  }
 
 
  Node* DerivedNodeFactory::convertToClassType ( Node* aNode )
  {
    boost::unordered_map< std::string , boost::shared_ptr<CreatorInterface> >::const_iterator lIt = mCreators.find ( aNode->mClassName );
 
    if ( lIt == mCreators.end() )
    {
      log ( Warning , "Class " , Quote ( aNode->mClassName ) , " is unknown to the NodeTreeBuilder class factory. A plain node will be returned instead." );
 
      if ( mCreators.size() )
      {
        log ( Warning , "Known types are:" );
 
        for ( boost::unordered_map< std::string , boost::shared_ptr<CreatorInterface> >::const_iterator lIt = mCreators.begin() ; lIt != mCreators.end() ; ++lIt )
        {
          log ( Warning , "    > " , lIt->first );
        }
      }
      else
      {
        log ( Warning , "No class types have been defined" );
      }
 
      return aNode;
    }
    else
    {
      Node* lClassNode ( lIt->second->create ( *aNode ) );
      delete aNode;
      return lClassNode;
    }
  }
 
}