| 1 | /*============================================================================= |
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| 2 | Copyright (c) 2001-2014 Joel de Guzman |
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| 3 | http://spirit.sourceforge.net/ |
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| 4 | |
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| 5 | Distributed under the Boost Software License, Version 1.0. (See accompanying |
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| 6 | file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt) |
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| 7 | =============================================================================*/ |
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| 8 | #if !defined(BOOST_SPIRIT_X3_ATTRIBUTE_TYPE_JAN_5_2012_0358PM) |
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| 9 | #define BOOST_SPIRIT_X3_ATTRIBUTE_TYPE_JAN_5_2012_0358PM |
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| 10 | |
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| 11 | #include <boost/mpl/identity.hpp> |
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| 12 | |
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| 13 | namespace boost { namespace spirit { namespace x3 { namespace traits |
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| 14 | { |
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| 15 | /////////////////////////////////////////////////////////////////////////// |
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| 16 | // Retrieve the attribute type to use from the given type |
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| 17 | // |
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| 18 | // This is needed to extract the correct attribute type from proxy classes |
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| 19 | // as utilized in FUSION_ADAPT_ADT et. al. |
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| 20 | /////////////////////////////////////////////////////////////////////////// |
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| 21 | template <typename Attribute, typename Enable = void> |
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| 22 | struct attribute_type : mpl::identity<Attribute> {}; |
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| 23 | |
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| 24 | }}}} |
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| 25 | |
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| 26 | #endif |
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| 27 | |
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