boost/signal.hpp
// Boost.Signals library // Copyright Douglas Gregor 2001-2006. 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/libs/signals #ifndef BOOST_SIGNAL_HPP #define BOOST_SIGNAL_HPP #ifndef BOOST_SIGNALS_MAX_ARGS # define BOOST_SIGNALS_MAX_ARGS 10 #endif #include <boost/config.hpp> #include <boost/type_traits/function_traits.hpp> #include <boost/signals/signal0.hpp> #include <boost/signals/signal1.hpp> #include <boost/signals/signal2.hpp> #include <boost/signals/signal3.hpp> #include <boost/signals/signal4.hpp> #include <boost/signals/signal5.hpp> #include <boost/signals/signal6.hpp> #include <boost/signals/signal7.hpp> #include <boost/signals/signal8.hpp> #include <boost/signals/signal9.hpp> #include <boost/signals/signal10.hpp> #include <boost/function.hpp> #ifdef BOOST_HAS_ABI_HEADERS # include BOOST_ABI_PREFIX #endif namespace boost { #ifndef BOOST_FUNCTION_NO_FUNCTION_TYPE_SYNTAX namespace BOOST_SIGNALS_NAMESPACE { namespace detail { template<int Arity, typename Signature, typename Combiner, typename Group, typename GroupCompare, typename SlotFunction> class real_get_signal_impl; template<typename Signature, typename Combiner, typename Group, typename GroupCompare, typename SlotFunction> class real_get_signal_impl<0, Signature, Combiner, Group, GroupCompare, SlotFunction> { typedef function_traits<Signature> traits; public: typedef signal0<typename traits::result_type, Combiner, Group, GroupCompare, SlotFunction> type; }; template<typename Signature, typename Combiner, typename Group, typename GroupCompare, typename SlotFunction> class real_get_signal_impl<1, Signature, Combiner, Group, GroupCompare, SlotFunction> { typedef function_traits<Signature> traits; public: typedef signal1<typename traits::result_type, typename traits::arg1_type, Combiner, Group, GroupCompare, SlotFunction> type; }; template<typename Signature, typename Combiner, typename Group, typename GroupCompare, typename SlotFunction> class real_get_signal_impl<2, Signature, Combiner, Group, GroupCompare, SlotFunction> { typedef function_traits<Signature> traits; public: typedef signal2<typename traits::result_type, typename traits::arg1_type, typename traits::arg2_type, Combiner, Group, GroupCompare, SlotFunction> type; }; template<typename Signature, typename Combiner, typename Group, typename GroupCompare, typename SlotFunction> class real_get_signal_impl<3, Signature, Combiner, Group, GroupCompare, SlotFunction> { typedef function_traits<Signature> traits; public: typedef signal3<typename traits::result_type, typename traits::arg1_type, typename traits::arg2_type, typename traits::arg3_type, Combiner, Group, GroupCompare, SlotFunction> type; }; template<typename Signature, typename Combiner, typename Group, typename GroupCompare, typename SlotFunction> class real_get_signal_impl<4, Signature, Combiner, Group, GroupCompare, SlotFunction> { typedef function_traits<Signature> traits; public: typedef signal4<typename traits::result_type, typename traits::arg1_type, typename traits::arg2_type, typename traits::arg3_type, typename traits::arg4_type, Combiner, Group, GroupCompare, SlotFunction> type; }; template<typename Signature, typename Combiner, typename Group, typename GroupCompare, typename SlotFunction> class real_get_signal_impl<5, Signature, Combiner, Group, GroupCompare, SlotFunction> { typedef function_traits<Signature> traits; public: typedef signal5<typename traits::result_type, typename traits::arg1_type, typename traits::arg2_type, typename traits::arg3_type, typename traits::arg4_type, typename traits::arg5_type, Combiner, Group, GroupCompare, SlotFunction> type; }; template<typename Signature, typename Combiner, typename Group, typename GroupCompare, typename SlotFunction> class real_get_signal_impl<6, Signature, Combiner, Group, GroupCompare, SlotFunction> { typedef function_traits<Signature> traits; public: typedef signal6<typename traits::result_type, typename traits::arg1_type, typename traits::arg2_type, typename traits::arg3_type, typename traits::arg4_type, typename traits::arg5_type, typename traits::arg6_type, Combiner, Group, GroupCompare, SlotFunction> type; }; template<typename Signature, typename Combiner, typename Group, typename GroupCompare, typename SlotFunction> class real_get_signal_impl<7, Signature, Combiner, Group, GroupCompare, SlotFunction> { typedef function_traits<Signature> traits; public: typedef signal7<typename traits::result_type, typename traits::arg1_type, typename traits::arg2_type, typename traits::arg3_type, typename traits::arg4_type, typename traits::arg5_type, typename traits::arg6_type, typename traits::arg7_type, Combiner, Group, GroupCompare, SlotFunction> type; }; template<typename Signature, typename Combiner, typename Group, typename GroupCompare, typename SlotFunction> class real_get_signal_impl<8, Signature, Combiner, Group, GroupCompare, SlotFunction> { typedef function_traits<Signature> traits; public: typedef signal8<typename traits::result_type, typename traits::arg1_type, typename traits::arg2_type, typename traits::arg3_type, typename traits::arg4_type, typename traits::arg5_type, typename traits::arg6_type, typename traits::arg7_type, typename traits::arg8_type, Combiner, Group, GroupCompare, SlotFunction> type; }; template<typename Signature, typename Combiner, typename Group, typename GroupCompare, typename SlotFunction> class real_get_signal_impl<9, Signature, Combiner, Group, GroupCompare, SlotFunction> { typedef function_traits<Signature> traits; public: typedef signal9<typename traits::result_type, typename traits::arg1_type, typename traits::arg2_type, typename traits::arg3_type, typename traits::arg4_type, typename traits::arg5_type, typename traits::arg6_type, typename traits::arg7_type, typename traits::arg8_type, typename traits::arg9_type, Combiner, Group, GroupCompare, SlotFunction> type; }; template<typename Signature, typename Combiner, typename Group, typename GroupCompare, typename SlotFunction> class real_get_signal_impl<10, Signature, Combiner, Group, GroupCompare, SlotFunction> { typedef function_traits<Signature> traits; public: typedef signal10<typename traits::result_type, typename traits::arg1_type, typename traits::arg2_type, typename traits::arg3_type, typename traits::arg4_type, typename traits::arg5_type, typename traits::arg6_type, typename traits::arg7_type, typename traits::arg8_type, typename traits::arg9_type, typename traits::arg10_type, Combiner, Group, GroupCompare, SlotFunction> type; }; template<typename Signature, typename Combiner, typename Group, typename GroupCompare, typename SlotFunction> struct get_signal_impl : public real_get_signal_impl<(function_traits<Signature>::arity), Signature, Combiner, Group, GroupCompare, SlotFunction> { }; } // end namespace detail } // end namespace BOOST_SIGNALS_NAMESPACE // Very lightweight wrapper around the signalN classes that allows signals to // be created where the number of arguments does not need to be part of the // class name. template< typename Signature, // function type R (T1, T2, ..., TN) typename Combiner = last_value<typename function_traits<Signature>::result_type>, typename Group = int, typename GroupCompare = std::less<Group>, typename SlotFunction = function<Signature> > class signal : public BOOST_SIGNALS_NAMESPACE::detail::get_signal_impl<Signature, Combiner, Group, GroupCompare, SlotFunction>::type { typedef typename BOOST_SIGNALS_NAMESPACE::detail::get_signal_impl< Signature, Combiner, Group, GroupCompare, SlotFunction>::type base_type; public: explicit signal(const Combiner& combiner = Combiner(), const GroupCompare& group_compare = GroupCompare()) : base_type(combiner, group_compare) { } }; #endif // ndef BOOST_FUNCTION_NO_FUNCTION_TYPE_SYNTAX } // end namespace boost #ifdef BOOST_HAS_ABI_HEADERS # include BOOST_ABI_SUFFIX #endif #endif // BOOST_SIGNAL_HPP