keyword_fwd.hpp 1.1 KB

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  1. /*
  2. * Copyright Andrey Semashev 2007 - 2015.
  3. * Distributed under the Boost Software License, Version 1.0.
  4. * (See accompanying file LICENSE_1_0.txt or copy at
  5. * http://www.boost.org/LICENSE_1_0.txt)
  6. */
  7. /*!
  8. * \file keyword_fwd.hpp
  9. * \author Andrey Semashev
  10. * \date 29.01.2012
  11. *
  12. * The header contains attribute keyword forward declaration.
  13. */
  14. #ifndef BOOST_LOG_EXPRESSIONS_KEYWORD_FWD_HPP_INCLUDED_
  15. #define BOOST_LOG_EXPRESSIONS_KEYWORD_FWD_HPP_INCLUDED_
  16. #include <boost/log/detail/config.hpp>
  17. #ifdef BOOST_HAS_PRAGMA_ONCE
  18. #pragma once
  19. #endif
  20. namespace boost {
  21. #ifndef BOOST_LOG_DOXYGEN_PASS
  22. namespace phoenix {
  23. template< typename >
  24. struct actor;
  25. } // namespace phoenix
  26. #endif // BOOST_LOG_DOXYGEN_PASS
  27. BOOST_LOG_OPEN_NAMESPACE
  28. namespace expressions {
  29. /*!
  30. * \brief This class implements an expression template keyword
  31. */
  32. template< typename DescriptorT, template< typename > class ActorT = phoenix::actor >
  33. struct attribute_keyword;
  34. } // namespace expressions
  35. BOOST_LOG_CLOSE_NAMESPACE // namespace log
  36. } // namespace boost
  37. #endif // BOOST_LOG_EXPRESSIONS_KEYWORD_FWD_HPP_INCLUDED_