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- /*=============================================================================
- Copyright (c) 2011 Eric Niebler
- 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)
- ==============================================================================*/
- #if !defined(BOOST_FUSION_ITERATOR_RANGE_IS_SEGMENTED_HPP_INCLUDED)
- #define BOOST_FUSION_ITERATOR_RANGE_IS_SEGMENTED_HPP_INCLUDED
- #include <boost/fusion/support/config.hpp>
- #include <boost/mpl/assert.hpp>
- #include <boost/mpl/bool.hpp>
- namespace boost { namespace fusion
- {
- struct iterator_range_tag;
- template <typename Context>
- struct segmented_iterator;
- namespace extension
- {
- template <typename Tag>
- struct is_segmented_impl;
- // An iterator_range of segmented_iterators is segmented
- template <>
- struct is_segmented_impl<iterator_range_tag>
- {
- private:
- template <typename Iterator>
- struct is_segmented_iterator
- : mpl::false_
- {};
- template <typename Iterator>
- struct is_segmented_iterator<Iterator &>
- : is_segmented_iterator<Iterator>
- {};
- template <typename Iterator>
- struct is_segmented_iterator<Iterator const>
- : is_segmented_iterator<Iterator>
- {};
- template <typename Context>
- struct is_segmented_iterator<segmented_iterator<Context> >
- : mpl::true_
- {};
- public:
- template <typename Sequence>
- struct apply
- : is_segmented_iterator<typename Sequence::begin_type>
- {
- BOOST_MPL_ASSERT_RELATION(
- is_segmented_iterator<typename Sequence::begin_type>::value
- , ==
- , is_segmented_iterator<typename Sequence::end_type>::value);
- };
- };
- }
- }}
- #endif
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