Chris@16: // Boost.Signals2 library
Chris@16: 
Chris@16: // Copyright Frank Mori Hess 2007-2008.
Chris@16: // Copyright Timmo Stange 2007.
Chris@16: // Copyright Douglas Gregor 2001-2004. Use, modification and
Chris@16: // distribution is subject to the Boost Software License, Version
Chris@16: // 1.0. (See accompanying file LICENSE_1_0.txt or copy at
Chris@16: // http://www.boost.org/LICENSE_1_0.txt)
Chris@16: 
Chris@16: // For more information, see http://www.boost.org
Chris@16: 
Chris@16: // This file is included iteratively, and should not be protected from multiple inclusion
Chris@16: 
Chris@16: #ifdef BOOST_NO_CXX11_VARIADIC_TEMPLATES
Chris@16: #define BOOST_SIGNALS2_NUM_ARGS BOOST_PP_ITERATION()
Chris@16: #else
Chris@16: #define BOOST_SIGNALS2_NUM_ARGS 1
Chris@16: #endif
Chris@16: 
Chris@16: 
Chris@16: namespace boost
Chris@16: {
Chris@16:   namespace signals2
Chris@16:   {
Chris@101: #ifdef BOOST_NO_CXX11_VARIADIC_TEMPLATES
Chris@16:     template<typename Signature, typename SlotFunction> class slot;
Chris@101: #else
Chris@101:     template<typename Signature, typename SlotFunction = boost::function<Signature> >
Chris@101:       class slot;
Chris@16: 
Chris@101: #if BOOST_WORKAROUND(BOOST_MSVC, <= 1900)
Chris@101:     template<typename Signature, typename SlotFunction> class slot{};
Chris@101: #endif
Chris@101: #endif // BOOST_NO_CXX11_VARIADIC_TEMPLATES
Chris@16: 
Chris@16:     template<BOOST_SIGNALS2_SLOT_TEMPLATE_SPECIALIZATION_DECL(BOOST_SIGNALS2_NUM_ARGS)>
Chris@16:       class BOOST_SIGNALS2_SLOT_CLASS_NAME(BOOST_SIGNALS2_NUM_ARGS) BOOST_SIGNALS2_SLOT_TEMPLATE_SPECIALIZATION
Chris@16:       : public slot_base, public detail::BOOST_SIGNALS2_STD_FUNCTIONAL_BASE(R)
Chris@16: 
Chris@16:     {
Chris@16:     public:
Chris@16:       template<BOOST_SIGNALS2_PREFIXED_SIGNATURE_TEMPLATE_DECL(BOOST_SIGNALS2_NUM_ARGS, Other), typename OtherSlotFunction>
Chris@16:       friend class BOOST_SIGNALS2_SLOT_CLASS_NAME(BOOST_SIGNALS2_NUM_ARGS);
Chris@16: 
Chris@16:       typedef SlotFunction slot_function_type;
Chris@16:       typedef R result_type;
Chris@16:       typedef typename mpl::identity<BOOST_SIGNALS2_SIGNATURE_FUNCTION_TYPE(BOOST_SIGNALS2_NUM_ARGS)>::type signature_type;
Chris@16: 
Chris@16: #ifdef BOOST_NO_CXX11_VARIADIC_TEMPLATES
Chris@16: 
Chris@16: // typedef Tn argn_type;
Chris@16: #define BOOST_SIGNALS2_MISC_STATEMENT(z, n, data) \
Chris@16:     typedef BOOST_PP_CAT(T, BOOST_PP_INC(n)) BOOST_PP_CAT(BOOST_PP_CAT(arg, BOOST_PP_INC(n)), _type);
Chris@16:           BOOST_PP_REPEAT(BOOST_SIGNALS2_NUM_ARGS, BOOST_SIGNALS2_MISC_STATEMENT, ~)
Chris@16: #undef BOOST_SIGNALS2_MISC_STATEMENT
Chris@16: #if BOOST_SIGNALS2_NUM_ARGS == 1
Chris@16:       typedef arg1_type argument_type;
Chris@16: #elif BOOST_SIGNALS2_NUM_ARGS == 2
Chris@16:       typedef arg1_type first_argument_type;
Chris@16:       typedef arg2_type second_argument_type;
Chris@16: #endif
Chris@16: 
Chris@16:       template<unsigned n> class arg : public
Chris@16:         detail::BOOST_SIGNALS2_PREPROCESSED_ARG_N_TYPE_CLASS_NAME(BOOST_SIGNALS2_NUM_ARGS)
Chris@16:         <n BOOST_SIGNALS2_PP_COMMA_IF(BOOST_SIGNALS2_NUM_ARGS)
Chris@16:         BOOST_SIGNALS2_ARGS_TEMPLATE_INSTANTIATION(BOOST_SIGNALS2_NUM_ARGS)>
Chris@16:       {};
Chris@16: 
Chris@16:       BOOST_STATIC_CONSTANT(int, arity = BOOST_SIGNALS2_NUM_ARGS);
Chris@16: 
Chris@16: #else // BOOST_NO_CXX11_VARIADIC_TEMPLATES
Chris@16: 
Chris@16:       template<unsigned n> class arg
Chris@16:       {
Chris@16:       public:
Chris@16:         typedef typename detail::variadic_arg_type<n, Args...>::type type;
Chris@16:       };
Chris@16:       BOOST_STATIC_CONSTANT(int, arity = sizeof...(Args));
Chris@16: 
Chris@16: #endif // BOOST_NO_CXX11_VARIADIC_TEMPLATES
Chris@16: 
Chris@16:       template<typename F>
Chris@16:       BOOST_SIGNALS2_SLOT_CLASS_NAME(BOOST_SIGNALS2_NUM_ARGS)(const F& f)
Chris@16:       {
Chris@16:         init_slot_function(f);
Chris@16:       }
Chris@16:       // copy constructors
Chris@16: #ifdef BOOST_NO_CXX11_VARIADIC_TEMPLATES
Chris@16:       template<BOOST_SIGNALS2_PREFIXED_SIGNATURE_TEMPLATE_DECL(BOOST_SIGNALS2_NUM_ARGS, Other), typename OtherSlotFunction>
Chris@16:       BOOST_SIGNALS2_SLOT_CLASS_NAME(BOOST_SIGNALS2_NUM_ARGS)(const BOOST_SIGNALS2_SLOT_CLASS_NAME(BOOST_SIGNALS2_NUM_ARGS)
Chris@16:         <BOOST_SIGNALS2_PREFIXED_SIGNATURE_TEMPLATE_INSTANTIATION(BOOST_SIGNALS2_NUM_ARGS, Other), OtherSlotFunction> &other_slot):
Chris@16:         slot_base(other_slot), _slot_function(other_slot._slot_function)
Chris@16:       {
Chris@16:       }
Chris@16: #endif
Chris@16:       template<typename Signature, typename OtherSlotFunction>
Chris@16:       BOOST_SIGNALS2_SLOT_CLASS_NAME(BOOST_SIGNALS2_NUM_ARGS)(const slot<Signature, OtherSlotFunction> &other_slot):
Chris@16:         slot_base(other_slot), _slot_function(other_slot._slot_function)
Chris@16:       {
Chris@16:       }
Chris@16:       // bind syntactic sugar
Chris@16:       BOOST_SIGNALS2_SLOT_N_BINDING_CONSTRUCTORS
Chris@16:       // invocation
Chris@16:       R operator()(BOOST_SIGNALS2_SIGNATURE_FULL_ARGS(BOOST_SIGNALS2_NUM_ARGS))
Chris@16:       {
Chris@16:         locked_container_type locked_objects = lock();
Chris@16:         return _slot_function(BOOST_SIGNALS2_SIGNATURE_ARG_NAMES(BOOST_SIGNALS2_NUM_ARGS));
Chris@16:       }
Chris@16:       R operator()(BOOST_SIGNALS2_SIGNATURE_FULL_ARGS(BOOST_SIGNALS2_NUM_ARGS)) const
Chris@16:       {
Chris@16:         locked_container_type locked_objects = lock();
Chris@16:         return _slot_function(BOOST_SIGNALS2_SIGNATURE_ARG_NAMES(BOOST_SIGNALS2_NUM_ARGS));
Chris@16:       }
Chris@16:       // tracking
Chris@16:       BOOST_SIGNALS2_SLOT_CLASS_NAME(BOOST_SIGNALS2_NUM_ARGS)& track(const weak_ptr<void> &tracked)      {
Chris@16:         _tracked_objects.push_back(tracked);
Chris@16:         return *this;
Chris@16:       }
Chris@16:       BOOST_SIGNALS2_SLOT_CLASS_NAME(BOOST_SIGNALS2_NUM_ARGS)& track(const signal_base &signal)
Chris@16:       {
Chris@16:         track_signal(signal);
Chris@16:         return *this;
Chris@16:       }
Chris@16:       BOOST_SIGNALS2_SLOT_CLASS_NAME(BOOST_SIGNALS2_NUM_ARGS)& track(const slot_base &slot)
Chris@16:       {
Chris@16:         tracked_container_type::const_iterator it;
Chris@16:         for(it = slot.tracked_objects().begin(); it != slot.tracked_objects().end(); ++it)
Chris@16:         {
Chris@16:           _tracked_objects.push_back(*it);
Chris@16:         }
Chris@16:         return *this;
Chris@16:       }
Chris@16:       template<typename ForeignWeakPtr>
Chris@16:       BOOST_SIGNALS2_SLOT_CLASS_NAME(BOOST_SIGNALS2_NUM_ARGS)& track_foreign(const ForeignWeakPtr &tracked,
Chris@16:         typename weak_ptr_traits<ForeignWeakPtr>::shared_type * /*SFINAE*/ = 0)
Chris@16:       {
Chris@16:         _tracked_objects.push_back(detail::foreign_void_weak_ptr(tracked));
Chris@16:         return *this;
Chris@16:       }
Chris@16:       template<typename ForeignSharedPtr>
Chris@16:       BOOST_SIGNALS2_SLOT_CLASS_NAME(BOOST_SIGNALS2_NUM_ARGS)& track_foreign(const ForeignSharedPtr &tracked,
Chris@16:         typename shared_ptr_traits<ForeignSharedPtr>::weak_type * /*SFINAE*/ = 0)
Chris@16:       {
Chris@16:         _tracked_objects.push_back
Chris@16:         (
Chris@16:           detail::foreign_void_weak_ptr
Chris@16:           (
Chris@16:             typename shared_ptr_traits<ForeignSharedPtr>::weak_type(tracked)
Chris@16:           )
Chris@16:         );
Chris@16:         return *this;
Chris@16:       }
Chris@16: 
Chris@16:       const slot_function_type& slot_function() const {return _slot_function;}
Chris@16:       slot_function_type& slot_function() {return _slot_function;}
Chris@16:     private:
Chris@16:       template<typename F>
Chris@16:       void init_slot_function(const F& f)
Chris@16:       {
Chris@16:         _slot_function = detail::get_invocable_slot(f, detail::tag_type(f));
Chris@16:         signals2::detail::tracked_objects_visitor visitor(this);
Chris@16:         boost::visit_each(visitor, f);
Chris@16:       }
Chris@16: 
Chris@16:       SlotFunction _slot_function;
Chris@16:     };
Chris@16: 
Chris@16: #ifdef BOOST_NO_CXX11_VARIADIC_TEMPLATES
Chris@16:     namespace detail
Chris@16:     {
Chris@16:       template<unsigned arity, typename Signature, typename SlotFunction>
Chris@16:       class slotN;
Chris@16:       // partial template specialization
Chris@16:       template<typename Signature, typename SlotFunction>
Chris@16:       class slotN<BOOST_SIGNALS2_NUM_ARGS, Signature, SlotFunction>
Chris@16:       {
Chris@16:       public:
Chris@16:         typedef BOOST_SIGNALS2_SLOT_CLASS_NAME(BOOST_SIGNALS2_NUM_ARGS)<
Chris@16:           BOOST_SIGNALS2_PORTABLE_SIGNATURE(BOOST_SIGNALS2_NUM_ARGS, Signature),
Chris@16:           SlotFunction> type;
Chris@16:       };
Chris@16:     }
Chris@16: #endif
Chris@16:   } // end namespace signals2
Chris@16: } // end namespace boost
Chris@16: 
Chris@16: #undef BOOST_SIGNALS2_NUM_ARGS