| /*============================================================================= |
| Copyright (c) 2001-2014 Joel de Guzman |
| http://spirit.sourceforge.net/ |
| |
| 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_SPIRIT_X3_ATTRIBUTE_TYPE_JAN_5_2012_0358PM) |
| #define BOOST_SPIRIT_X3_ATTRIBUTE_TYPE_JAN_5_2012_0358PM |
| |
| #if defined(_MSC_VER) |
| #pragma once |
| #endif |
| |
| #include <boost/mpl/identity.hpp> |
| |
| namespace boost { namespace spirit { namespace x3 { namespace traits |
| { |
| /////////////////////////////////////////////////////////////////////////// |
| // Retrieve the attribute type to use from the given type |
| // |
| // This is needed to extract the correct attribute type from proxy classes |
| // as utilized in FUSION_ADAPT_ADT et. al. |
| /////////////////////////////////////////////////////////////////////////// |
| template <typename Attribute, typename Enable = void> |
| struct attribute_type : mpl::identity<Attribute> {}; |
| |
| }}}} |
| |
| #endif |
