/usr/include/boost/log/detail
Edit: /usr/include/boost/log/detail/parameter_tools.hpp (6045B)
/*
* 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
#include
#include
#include
#include
#include
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#include
#include
#include
#include
#include
#include
#include
#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_1(n, types)\
template< typename T0 >\
explicit BOOST_PP_TUPLE_ELEM(2, 0, types)(T0 const& arg0, typename boost::log::aux::enable_if_named_parameters< T0, boost::log::aux::sfinae_dummy >::type = boost::log::aux::sfinae_dummy()) :\
BOOST_PP_TUPLE_ELEM(2, 1, types)((BOOST_PP_ENUM_PARAMS(n, arg))) {}
#define BOOST_LOG_CTOR_FORWARD_N(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))) {}
#define BOOST_LOG_CTOR_FORWARD(z, n, types)\
BOOST_PP_IF(BOOST_PP_EQUAL(n, 1), BOOST_LOG_CTOR_FORWARD_1, BOOST_LOG_CTOR_FORWARD_N)(n, types)
// 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_1(n, types)\
template< typename T0 >\
explicit BOOST_PP_TUPLE_ELEM(2, 0, types)(T0 const& arg0, typename boost::log::aux::enable_if_named_parameters< T0, boost::log::aux::sfinae_dummy >::type = boost::log::aux::sfinae_dummy())\
{ BOOST_PP_TUPLE_ELEM(2, 1, types)((BOOST_PP_ENUM_PARAMS(n, arg))); }
#define BOOST_LOG_CTOR_CALL_N(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))); }
#define BOOST_LOG_CTOR_CALL(z, n, types)\
BOOST_PP_IF(BOOST_PP_EQUAL(n, 1), BOOST_LOG_CTOR_CALL_1, BOOST_LOG_CTOR_CALL_N)(n, types)
// 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.
// https://svn.boost.org/trac/boost/ticket/7247
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
#if !defined(BOOST_NO_CXX11_TEMPLATE_ALIASES)
template< typename T, typename R >
using enable_if_named_parameters = boost::enable_if_c< boost::mpl::or_< boost::is_base_of< boost::parameter::aux::tagged_argument_base, T >, boost::is_base_of< empty_arg_list, T > >::value, R >;
#else // !defined(BOOST_NO_CXX11_TEMPLATE_ALIASES)
template< typename T, typename R >
struct enable_if_named_parameters :
public boost::enable_if_c< boost::mpl::or_< boost::is_base_of< boost::parameter::aux::tagged_argument_base, T >, boost::is_base_of< empty_arg_list, T > >::value, R >
{
};
#endif // !defined(BOOST_NO_CXX11_TEMPLATE_ALIASES)
} // namespace aux
BOOST_LOG_CLOSE_NAMESPACE // namespace log
} // namespace boost
#include
#endif // BOOST_LOG_DETAIL_PARAMETER_TOOLS_HPP_INCLUDED_