71 lines
2.0 KiB
C++
71 lines
2.0 KiB
C++
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/*
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* Copyright Andrey Semashev 2007 - 2015.
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* Distributed under the Boost Software License, Version 1.0.
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* (See accompanying file LICENSE_1_0.txt or copy at
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* http://www.boost.org/LICENSE_1_0.txt)
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*/
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/*!
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* \file custom_terminal_spec.hpp
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* \author Andrey Semashev
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* \date 29.01.2012
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*
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* The header contains Boost.Phoenix custom terminal specialization for Boost.Log terminals.
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*/
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#ifndef BOOST_LOG_DETAIL_CUSTOM_TERMINAL_SPEC_HPP_INCLUDED_
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#define BOOST_LOG_DETAIL_CUSTOM_TERMINAL_SPEC_HPP_INCLUDED_
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#include <boost/mpl/bool.hpp>
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#include <boost/phoenix/core/terminal_fwd.hpp>
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#include <boost/phoenix/core/is_nullary.hpp>
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#include <boost/phoenix/core/terminal.hpp> // needed for terminal-related part of the grammar
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#include <boost/type_traits/remove_cv.hpp>
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#include <boost/type_traits/remove_reference.hpp>
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#include <boost/utility/result_of.hpp>
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#include <boost/log/detail/config.hpp>
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#include <boost/log/detail/header.hpp>
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#ifdef BOOST_HAS_PRAGMA_ONCE
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#pragma once
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#endif
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namespace boost {
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namespace phoenix {
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template< typename T >
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struct is_custom_terminal< T, typename T::_is_boost_log_terminal > :
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public mpl::true_
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{
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};
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template< typename T >
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struct custom_terminal< T, typename T::_is_boost_log_terminal >
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{
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typedef custom_terminal< T, typename T::_is_boost_log_terminal > this_type;
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template< typename >
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struct result;
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template< typename ThisT, typename TermT, typename ContextT >
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struct result< ThisT(TermT, ContextT) >
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{
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typedef typename remove_cv< typename remove_reference< TermT >::type >::type term;
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typedef typename boost::result_of< const term(ContextT) >::type type;
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};
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template< typename ContextT >
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typename result< const this_type(T const&, ContextT&) >::type operator() (T const& term, ContextT& ctx) const
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{
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return term(ctx);
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}
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};
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} // namespace phoenix
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} // namespace boost
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#include <boost/log/detail/footer.hpp>
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#endif // BOOST_LOG_DETAIL_CUSTOM_TERMINAL_SPEC_HPP_INCLUDED_
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