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// as_sequence.hpp
//  Copyright 2007 Eric Niebler. Distributed under the Boost
//  Software License, Version 1.0. (See accompanying file
//  LICENSE_1_0.txt or copy at


// MS compatible compilers support #pragma once
#if defined(_MSC_VER) && (_MSC_VER >= 1020)
# pragma once

#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 detail

    template<typename Grammar>
    struct in_sequence
      : Grammar

        template<typename Expr, typename State, typename Visitor>
        struct apply
            typedef static_xpression<
                typename Grammar::template apply<Expr, State, Visitor>::type
              , State
            > type;

        template<typename Expr, typename State, typename Visitor>
        static typename apply<Expr, State, Visitor>::type
        call(Expr const &expr, State const &state, Visitor &visitor)
            return typename apply<Expr, State, Visitor>::type(
                Grammar::call(expr, state, visitor)
              , state