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