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/*=============================================================================
Copyright (c) 2001-2011 Joel de Guzman
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(SPIRIT_SEQUENCE_BASE_ID_MAR_15_2009_1243PM)
#define SPIRIT_SEQUENCE_BASE_ID_MAR_15_2009_1243PM
#if defined(_MSC_VER)
#pragma once
#endif
#include <boost/mpl/has_xxx.hpp>
#include <boost/utility/enable_if.hpp>
#include <boost/spirit/home/support/attributes.hpp>
namespace boost { namespace spirit { namespace traits
{
namespace detail
{
BOOST_MPL_HAS_XXX_TRAIT_DEF(sequence_base_id)
}
// We specialize this for sequences (see support/attributes.hpp).
// For sequences, we only wrap the attribute in a tuple IFF
// it is not already a fusion tuple.
//
// Note: in the comment above, "sequence" is a spirit sequence
// component (parser or generator), and a tuple is a fusion sequence
// (to avoid terminology confusion).
template <typename Derived, typename Attribute>
struct pass_attribute<Derived, Attribute,
typename enable_if<detail::has_sequence_base_id<Derived> >::type>
: wrap_if_not_tuple<Attribute> {};
}}}
#endif
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