ogreiteratordeclarator.h

使用stl技术,(还没看,是听说的)

#ifndef PYOGRE_ITERATORWRAPPERS_H_INCLUDED
# define PYOGRE_ITERATORWRAPPERS_H_INCLUDED

/** Used to declare an OgreIterator:
 OgreIteratorDeclarator< SettingsIterator, String > declareSettingsIterator;
 */

template<typename IteratorType>   // EnumeratedType could be deduced if defined in templated type
class OgreIteratorDeclarator
{
public:
   typedef typename IteratorType::value_type ValueType;

   OgreIteratorDeclarator( const std::string &className )
   {
      boost::python::class_< IteratorType >( className.c_str(), no_init )
         .def( "next", &next )
         .def( "__iter__", &iter )
         ;
   }

   static ValueType next( IteratorType &iterator )
   {
      if ( !iterator.hasMoreElements() )
         boost::python::objects::stop_iteration_error(); // in object/iterator_core.hpp
      return iterator.getNext();
   }

   static IteratorType iter( const IteratorType &iterator )
   {
      return iterator;
   }
};

template<typename IteratorType>   // EnumeratedType could be deduced if defined in templated type
class OgreMapIteratorDeclarator
{
public:
   OgreMapIteratorDeclarator( const std::string &className )
   {
      boost::python::class_< IteratorType >( className.c_str(), no_init )
         .def( "next", &next )
         .def( "__iter__", &iter )
         ;
   }

   static boost::python::tuple next( IteratorType &iterator )
   {
      if ( !iterator.hasMoreElements() )
         boost::python::objects::stop_iteration_error(); // in object/iterator_core.hpp

      typename IteratorType::KeyType key = iterator.peekNextKey();
      return boost::python::make_tuple( key, iterator.getNext() );
   }

   static IteratorType iter( const IteratorType &iterator )
   {
      return iterator;
   }
};


#endif // PYOGRE_ITERATORWRAPPERS_H_INCLUDED