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///////////////////////////////////////////////////////////////////////////////
// as_sequence.hpp
//
//  Copyright 2008 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)

#ifndef BOOST_XPRESSIVE_DETAIL_STATIC_TRANSFORMS_AS_SEQUENCE_HPP_EAN_04_01_2007
#define BOOST_XPRESSIVE_DETAIL_STATIC_TRANSFORMS_AS_SEQUENCE_HPP_EAN_04_01_2007

// MS compatible compilers support #pragma once
#if defined(_MSC_VER)
# pragma once
#endif

#include <boost/mpl/assert.hpp>
#include <boost/type_traits/is_same.hpp>
#include <boost/xpressive/detail/detail_fwd.hpp>
#include <boost/xpressive/detail/static/static.hpp>

namespace boost { namespace xpressive { namespace grammar_detail
{
    template<typename Grammar, typename Callable = proto::callable>
    struct in_sequence : proto::transform<in_sequence<Grammar, Callable> >
    {
        template<typename Expr, typename State, typename Data>
        struct impl : proto::transform_impl<Expr, State, Data>
        {
            typedef
                detail::static_xpression<
                    typename Grammar::template impl<Expr, State, Data>::result_type
                  , State
                >
            result_type;

            result_type operator ()(
                typename impl::expr_param expr
              , typename impl::state_param state
              , typename impl::data_param data
            ) const
            {
                return result_type(
                    typename Grammar::template impl<Expr, State, Data>()(expr, state, data)
                  , state
                );
            }
        };
    };

}}}

#endif