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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/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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