Chris@16: // Copyright Eric Niebler 2005.
Chris@16: // Distributed under the Boost Software License, Version 1.0. (See
Chris@16: // accompanying file LICENSE_1_0.txt or copy at
Chris@16: // http://www.boost.org/LICENSE_1_0.txt)
Chris@16: #ifndef STL_ITERATOR_EAN20051028_HPP
Chris@16: # define STL_ITERATOR_EAN20051028_HPP
Chris@16: 
Chris@16: # include <boost/python/detail/prefix.hpp>
Chris@16: 
Chris@16: # include <boost/python/object/stl_iterator_core.hpp>
Chris@16: 
Chris@16: # include <boost/iterator/iterator_facade.hpp>
Chris@16: 
Chris@16: namespace boost { namespace python
Chris@16: { 
Chris@16: 
Chris@16: // An STL input iterator over a python sequence
Chris@16: template<typename ValueT>
Chris@16: struct stl_input_iterator
Chris@16:   : boost::iterator_facade<
Chris@16:         stl_input_iterator<ValueT>
Chris@16:       , ValueT
Chris@16:       , std::input_iterator_tag
Chris@16:       , ValueT
Chris@16:     >
Chris@16: {
Chris@16:     stl_input_iterator()
Chris@16:       : impl_()
Chris@16:     {
Chris@16:     }
Chris@16: 
Chris@16:     // ob is the python sequence
Chris@16:     stl_input_iterator(boost::python::object const &ob)
Chris@16:       : impl_(ob)
Chris@16:     {
Chris@16:     }
Chris@16: 
Chris@16: private:
Chris@16:     friend class boost::iterator_core_access;
Chris@16: 
Chris@16:     void increment()
Chris@16:     {
Chris@16:         this->impl_.increment();
Chris@16:     }
Chris@16: 
Chris@16:     ValueT dereference() const
Chris@16:     {
Chris@16:         return extract<ValueT>(this->impl_.current().get())();
Chris@16:     }
Chris@16: 
Chris@16:     bool equal(stl_input_iterator<ValueT> const &that) const
Chris@16:     {
Chris@16:         return this->impl_.equal(that.impl_);
Chris@16:     }
Chris@16: 
Chris@16:     objects::stl_input_iterator_impl impl_;
Chris@16: };
Chris@16: 
Chris@16: }} // namespace boost::python
Chris@16: 
Chris@16: #endif // STL_ITERATOR_EAN20051028_HPP