68 lines
2.0 KiB
Plaintext
68 lines
2.0 KiB
Plaintext
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/*=============================================================================
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Copyright (c) 2011 Eric Niebler
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Distributed under the Boost Software License, Version 1.0. (See accompanying
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file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
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==============================================================================*/
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#if !defined(BOOST_FUSION_ITERATOR_RANGE_IS_SEGMENTED_HPP_INCLUDED)
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#define BOOST_FUSION_ITERATOR_RANGE_IS_SEGMENTED_HPP_INCLUDED
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#include <boost/fusion/support/config.hpp>
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#include <boost/mpl/assert.hpp>
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#include <boost/mpl/bool.hpp>
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namespace boost { namespace fusion
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{
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struct iterator_range_tag;
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template <typename Context>
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struct segmented_iterator;
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namespace extension
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{
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template <typename Tag>
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struct is_segmented_impl;
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// An iterator_range of segmented_iterators is segmented
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template <>
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struct is_segmented_impl<iterator_range_tag>
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{
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private:
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template <typename Iterator>
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struct is_segmented_iterator
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: mpl::false_
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{};
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template <typename Iterator>
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struct is_segmented_iterator<Iterator &>
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: is_segmented_iterator<Iterator>
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{};
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template <typename Iterator>
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struct is_segmented_iterator<Iterator const>
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: is_segmented_iterator<Iterator>
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{};
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template <typename Context>
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struct is_segmented_iterator<segmented_iterator<Context> >
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: mpl::true_
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{};
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public:
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template <typename Sequence>
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struct apply
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: is_segmented_iterator<typename Sequence::begin_type>
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{
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BOOST_MPL_ASSERT_RELATION(
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is_segmented_iterator<typename Sequence::begin_type>::value
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, ==
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, is_segmented_iterator<typename Sequence::end_type>::value);
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};
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};
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}
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}}
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#endif
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