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- //---------------------------------------------------------------------------//
- // Copyright (c) 2013 Kyle Lutz <kyle.r.lutz@gmail.com>
- //
- // Distributed under the Boost Software License, Version 1.0
- // See accompanying file LICENSE_1_0.txt or copy at
- // http://www.boost.org/LICENSE_1_0.txt
- //
- // See http://boostorg.github.com/compute for more information.
- //---------------------------------------------------------------------------//
- #ifndef BOOST_COMPUTE_ITERATOR_DETAIL_GET_BASE_ITERATOR_BUFFER_HPP
- #define BOOST_COMPUTE_ITERATOR_DETAIL_GET_BASE_ITERATOR_BUFFER_HPP
- namespace boost {
- namespace compute {
- namespace detail {
- // returns the buffer for an iterator adaptor's base iterator if
- // it exists, otherwise returns a null buffer object.
- template<class Iterator>
- inline const buffer&
- get_base_iterator_buffer(const Iterator &iter,
- typename boost::enable_if<
- is_buffer_iterator<
- typename Iterator::base_type
- >
- >::type* = 0)
- {
- return iter.base().get_buffer();
- }
- template<class Iterator>
- inline const buffer&
- get_base_iterator_buffer(const Iterator &iter,
- typename boost::disable_if<
- is_buffer_iterator<
- typename Iterator::base_type
- >
- >::type* = 0)
- {
- (void) iter;
- static buffer null_buffer;
- return null_buffer;
- }
- } // end detail namespace
- } // end compute namespace
- } // end boost namespace
- #endif // BOOST_COMPUTE_ITERATOR_DETAIL_GET_BASE_ITERATOR_BUFFER_HPP
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