| /*============================================================================= | |
| 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 |