/Src/Dependencies/Boost/boost/signals2/signal_type.hpp
http://hadesmem.googlecode.com/ · C++ Header · 144 lines · 109 code · 18 blank · 17 comment · 0 complexity · f89bbc178b11d431b01a69373a4bcc94 MD5 · raw file
- /*
- A meta function which supports using named template type parameters
- via Boost.Parameter to specify the template type parameters for
- the boost::signals2::signal class.
- Author: Frank Mori Hess <fmhess@users.sourceforge.net>
- Begin: 2009-01-22
- */
- // Copyright Frank Mori Hess 2009
- // Use, modification and
- // distribution is subject to 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)
- // For more information, see http://www.boost.org
- #ifndef BOOST_SIGNALS2_SIGNAL_TYPE_HPP
- #define BOOST_SIGNALS2_SIGNAL_TYPE_HPP
- // support for function types is currently broken in Boost.Parameter
- // #define BOOST_SIGNALS2_NAMED_SIGNATURE_PARAMETER
- #include <boost/signals2/signal.hpp>
- #if !defined(BOOST_PARAMETER_MAX_ARITY)
- #define BOOST_PARAMETER_MAX_ARITY 7
- #else
- #if BOOST_PARAMETER_MAX_ARITY < 7
- #error This header requires BOOST_PARAMETER_MAX_ARITY to be defined as 7 or greater prior to including Boost.Parameter headers
- #endif // BOOST_PARAMETER_MAX_ARITY < 7
- #endif // !defined(BOOST_PARAMETER_MAX_ARITY)
- #include <boost/parameter.hpp>
- #include <boost/type_traits/is_function.hpp>
- namespace boost
- {
- namespace signals2
- {
- namespace keywords
- {
- #ifdef BOOST_SIGNALS2_NAMED_SIGNATURE_PARAMETER
- BOOST_PARAMETER_TEMPLATE_KEYWORD(signature_type)
- #endif
- BOOST_PARAMETER_TEMPLATE_KEYWORD(combiner_type)
- BOOST_PARAMETER_TEMPLATE_KEYWORD(group_type)
- BOOST_PARAMETER_TEMPLATE_KEYWORD(group_compare_type)
- BOOST_PARAMETER_TEMPLATE_KEYWORD(slot_function_type)
- BOOST_PARAMETER_TEMPLATE_KEYWORD(extended_slot_function_type)
- BOOST_PARAMETER_TEMPLATE_KEYWORD(mutex_type)
- } // namespace keywords
- template <
- #ifdef BOOST_SIGNALS2_NAMED_SIGNATURE_PARAMETER
- typename A0,
- #else
- typename Signature,
- #endif
- typename A1 = parameter::void_,
- typename A2 = parameter::void_,
- typename A3 = parameter::void_,
- typename A4 = parameter::void_,
- typename A5 = parameter::void_,
- typename A6 = parameter::void_
- >
- class signal_type
- {
- typedef parameter::parameters<
- #ifdef BOOST_SIGNALS2_NAMED_SIGNATURE_PARAMETER
- parameter::required<keywords::tag::signature_type, is_function<boost::mpl::_> >,
- #endif
- parameter::optional<keywords::tag::combiner_type>,
- parameter::optional<keywords::tag::group_type>,
- parameter::optional<keywords::tag::group_compare_type>,
- parameter::optional<keywords::tag::slot_function_type>,
- parameter::optional<keywords::tag::extended_slot_function_type>,
- parameter::optional<keywords::tag::mutex_type>
- > parameter_spec;
- public:
- // ArgumentPack
- typedef typename
- parameter_spec::bind<
- #ifdef BOOST_SIGNALS2_NAMED_SIGNATURE_PARAMETER
- A0,
- #endif
- A1, A2, A3, A4, A5, A6>::type
- args;
- #ifdef BOOST_SIGNALS2_NAMED_SIGNATURE_PARAMETER
- typedef typename parameter::value_type<args, keywords::tag::signature_type>::type
- signature_type;
- #else
- typedef Signature signature_type;
- #endif
- typedef typename parameter::value_type
- <
- args,
- keywords::tag::combiner_type,
- optional_last_value
- <
- typename boost::function_traits<signature_type>::result_type
- >
- >::type combiner_type;
- typedef typename
- parameter::value_type<args, keywords::tag::group_type, int>::type group_type;
- typedef typename
- parameter::value_type<args, keywords::tag::group_compare_type, std::less<group_type> >::type
- group_compare_type;
- typedef typename
- parameter::value_type<args, keywords::tag::slot_function_type, function<signature_type> >::type
- slot_function_type;
- typedef typename
- parameter::value_type
- <
- args,
- keywords::tag::extended_slot_function_type,
- typename detail::extended_signature<function_traits<signature_type>::arity, signature_type>::function_type
- >::type
- extended_slot_function_type;
- typedef typename
- parameter::value_type<args, keywords::tag::mutex_type, mutex>::type mutex_type;
- typedef signal
- <
- signature_type,
- combiner_type,
- group_type,
- group_compare_type,
- slot_function_type,
- extended_slot_function_type,
- mutex_type
- > type;
- };
- } // namespace signals2
- } // namespace boost
- #endif // BOOST_SIGNALS2_SIGNAL_TYPE_HPP