| /* |
| * Copyright Andrey Semashev 2007 - 2015. |
| * 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) |
| */ |
| /*! |
| * \file parameter_tools.hpp |
| * \author Andrey Semashev |
| * \date 28.06.2009 |
| * |
| * \brief This header is the Boost.Log library implementation, see the library documentation |
| * at http://www.boost.org/doc/libs/release/libs/log/doc/html/index.html. |
| */ |
| |
| #ifndef BOOST_LOG_DETAIL_PARAMETER_TOOLS_HPP_INCLUDED_ |
| #define BOOST_LOG_DETAIL_PARAMETER_TOOLS_HPP_INCLUDED_ |
| |
| #include <boost/parameter/keyword.hpp> |
| #include <boost/preprocessor/repetition/enum_params.hpp> |
| #include <boost/preprocessor/repetition/enum_binary_params.hpp> |
| #include <boost/preprocessor/repetition/repeat_from_to.hpp> |
| #include <boost/preprocessor/facilities/intercept.hpp> |
| #include <boost/preprocessor/arithmetic/dec.hpp> |
| #include <boost/preprocessor/tuple/elem.hpp> |
| #include <boost/log/detail/config.hpp> |
| #include <boost/log/detail/header.hpp> |
| |
| #ifdef BOOST_HAS_PRAGMA_ONCE |
| #pragma once |
| #endif |
| |
| #ifndef BOOST_LOG_MAX_PARAMETER_ARGS |
| //! The maximum number of named arguments that are accepted by constructors and functions |
| #define BOOST_LOG_MAX_PARAMETER_ARGS 16 |
| #endif |
| |
| // The macro applies the passed macro with the specified arguments BOOST_LOG_MAX_PARAMETER_ARGS times |
| #define BOOST_LOG_PARAMETRIZED_CONSTRUCTORS_GEN(macro, args)\ |
| public:\ |
| BOOST_PP_REPEAT_FROM_TO(1, BOOST_LOG_MAX_PARAMETER_ARGS, macro, args) |
| |
| |
| #define BOOST_LOG_CTOR_FORWARD(z, n, types)\ |
| template< BOOST_PP_ENUM_PARAMS(n, typename T) >\ |
| explicit BOOST_PP_TUPLE_ELEM(2, 0, types)(BOOST_PP_ENUM_BINARY_PARAMS(n, T, const& arg)) :\ |
| BOOST_PP_TUPLE_ELEM(2, 1, types)((BOOST_PP_ENUM_PARAMS(n, arg))) {} |
| |
| // The macro expands to a number of templated constructors that aggregate their named arguments |
| // into an ArgumentsPack and pass it to the base class constructor. |
| #define BOOST_LOG_PARAMETRIZED_CONSTRUCTORS_FORWARD(class_type, base_type)\ |
| BOOST_LOG_PARAMETRIZED_CONSTRUCTORS_GEN(BOOST_LOG_CTOR_FORWARD, (class_type, base_type)) |
| |
| |
| #define BOOST_LOG_CTOR_CALL(z, n, types)\ |
| template< BOOST_PP_ENUM_PARAMS(n, typename T) >\ |
| explicit BOOST_PP_TUPLE_ELEM(2, 0, types)(BOOST_PP_ENUM_BINARY_PARAMS(n, T, const& arg))\ |
| { BOOST_PP_TUPLE_ELEM(2, 1, types)((BOOST_PP_ENUM_PARAMS(n, arg))); } |
| |
| // The macro expands to a number of templated constructors that aggregate their named arguments |
| // into an ArgumentsPack and pass it to a function call. |
| #define BOOST_LOG_PARAMETRIZED_CONSTRUCTORS_CALL(class_type, fun)\ |
| BOOST_LOG_PARAMETRIZED_CONSTRUCTORS_GEN(BOOST_LOG_CTOR_CALL, (class_type, fun)) |
| |
| namespace boost { |
| |
| BOOST_LOG_OPEN_NAMESPACE |
| |
| namespace aux { |
| |
| // Yeah, not too cute. The empty_arg_list class should really be public. |
| typedef boost::parameter::aux::empty_arg_list empty_arg_list; |
| |
| #if !(defined(BOOST_NO_CXX11_VARIADIC_TEMPLATES) || defined(BOOST_LOG_NO_CXX11_ARG_PACKS_TO_NON_VARIADIC_ARGS_EXPANSION)) |
| |
| //! The metafunction generates argument pack |
| template< typename ArgT0, typename... ArgsT > |
| struct make_arg_list |
| { |
| typedef boost::parameter::aux::arg_list< ArgT0, typename make_arg_list< ArgsT... >::type > type; |
| }; |
| |
| template< typename ArgT0 > |
| struct make_arg_list< ArgT0 > |
| { |
| typedef boost::parameter::aux::arg_list< ArgT0 > type; |
| }; |
| |
| #else |
| |
| //! The metafunction generates argument pack |
| template< typename ArgT0, BOOST_PP_ENUM_BINARY_PARAMS(BOOST_PP_DEC(BOOST_LOG_MAX_PARAMETER_ARGS), typename T, = void BOOST_PP_INTERCEPT) > |
| struct make_arg_list |
| { |
| typedef boost::parameter::aux::arg_list< ArgT0, typename make_arg_list< BOOST_PP_ENUM_PARAMS(BOOST_PP_DEC(BOOST_LOG_MAX_PARAMETER_ARGS), T) >::type > type; |
| }; |
| |
| template< typename ArgT0 > |
| struct make_arg_list< ArgT0, BOOST_PP_ENUM_PARAMS(BOOST_PP_DEC(BOOST_LOG_MAX_PARAMETER_ARGS), void BOOST_PP_INTERCEPT) > |
| { |
| typedef boost::parameter::aux::arg_list< ArgT0 > type; |
| }; |
| |
| #endif |
| |
| } // namespace aux |
| |
| BOOST_LOG_CLOSE_NAMESPACE // namespace log |
| |
| } // namespace boost |
| |
| #include <boost/log/detail/footer.hpp> |
| |
| #endif // BOOST_LOG_DETAIL_PARAMETER_TOOLS_HPP_INCLUDED_ |