| 1 | /* |
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| 2 | * Copyright Andrey Semashev 2007 - 2015. |
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| 3 | * Distributed under the Boost Software License, Version 1.0. |
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| 4 | * (See accompanying file LICENSE_1_0.txt or copy at |
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| 5 | * http://www.boost.org/LICENSE_1_0.txt) |
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| 6 | */ |
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| 7 | /*! |
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| 8 | * \file value_visitation_fwd.hpp |
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| 9 | * \author Andrey Semashev |
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| 10 | * \date 01.03.2008 |
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| 11 | * |
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| 12 | * The header contains forward declaration of convenience tools to apply visitors to an attribute value |
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| 13 | * in the view. |
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| 14 | */ |
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| 15 | |
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| 16 | #ifndef BOOST_LOG_ATTRIBUTES_VALUE_VISITATION_FWD_HPP_INCLUDED_ |
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| 17 | #define BOOST_LOG_ATTRIBUTES_VALUE_VISITATION_FWD_HPP_INCLUDED_ |
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| 18 | |
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| 19 | #include <boost/log/detail/config.hpp> |
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| 20 | #include <boost/log/attributes/fallback_policy_fwd.hpp> |
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| 21 | |
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| 22 | #ifdef BOOST_HAS_PRAGMA_ONCE |
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| 23 | #pragma once |
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| 24 | #endif |
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| 25 | |
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| 26 | namespace boost { |
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| 27 | |
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| 28 | BOOST_LOG_OPEN_NAMESPACE |
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| 29 | |
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| 30 | /*! |
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| 31 | * \brief The class represents attribute value visitation result |
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| 32 | */ |
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| 33 | class visitation_result; |
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| 34 | |
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| 35 | /*! |
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| 36 | * \brief Generic attribute value visitor invoker |
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| 37 | */ |
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| 38 | template< typename T, typename FallbackPolicyT = fallback_to_none > |
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| 39 | class value_visitor_invoker; |
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| 40 | |
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| 41 | BOOST_LOG_CLOSE_NAMESPACE // namespace log |
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| 42 | |
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| 43 | } // namespace boost |
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| 44 | |
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| 45 | #endif // BOOST_LOG_ATTRIBUTES_VALUE_VISITATION_FWD_HPP_INCLUDED_ |
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| 46 | |
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