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183 lines
6.9 KiB
183 lines
6.9 KiB
// Boost.Signals2 library |
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// Copyright Frank Mori Hess 2007-2008. |
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// Copyright Timmo Stange 2007. |
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// Copyright Douglas Gregor 2001-2004. Use, modification and |
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// distribution is subject to the Boost Software License, Version |
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// 1.0. (See accompanying file LICENSE_1_0.txt or copy at |
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// http://www.boost.org/LICENSE_1_0.txt) |
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// For more information, see http://www.boost.org |
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// This file is included iteratively, and should not be protected from multiple inclusion |
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#ifdef BOOST_NO_VARIADIC_TEMPLATES |
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#define BOOST_SIGNALS2_NUM_ARGS BOOST_PP_ITERATION() |
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#else |
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#define BOOST_SIGNALS2_NUM_ARGS 1 |
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#endif |
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namespace boost |
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{ |
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namespace signals2 |
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{ |
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template<typename Signature, typename SlotFunction> class slot; |
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// slot class template. |
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template<BOOST_SIGNALS2_SIGNATURE_TEMPLATE_DECL(BOOST_SIGNALS2_NUM_ARGS), |
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typename SlotFunction = BOOST_SIGNALS2_FUNCTION_N_DECL(BOOST_SIGNALS2_NUM_ARGS)> |
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class BOOST_SIGNALS2_SLOT_CLASS_NAME(BOOST_SIGNALS2_NUM_ARGS); |
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template<BOOST_SIGNALS2_SLOT_TEMPLATE_SPECIALIZATION_DECL(BOOST_SIGNALS2_NUM_ARGS)> |
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class BOOST_SIGNALS2_SLOT_CLASS_NAME(BOOST_SIGNALS2_NUM_ARGS) BOOST_SIGNALS2_SLOT_TEMPLATE_SPECIALIZATION |
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: public slot_base, public detail::BOOST_SIGNALS2_STD_FUNCTIONAL_BASE(R) |
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{ |
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public: |
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template<BOOST_SIGNALS2_PREFIXED_SIGNATURE_TEMPLATE_DECL(BOOST_SIGNALS2_NUM_ARGS, Other), typename OtherSlotFunction> |
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friend class BOOST_SIGNALS2_SLOT_CLASS_NAME(BOOST_SIGNALS2_NUM_ARGS); |
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typedef SlotFunction slot_function_type; |
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typedef R result_type; |
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typedef typename mpl::identity<BOOST_SIGNALS2_SIGNATURE_FUNCTION_TYPE(BOOST_SIGNALS2_NUM_ARGS)>::type signature_type; |
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#ifdef BOOST_NO_VARIADIC_TEMPLATES |
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// typedef Tn argn_type; |
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#define BOOST_SIGNALS2_MISC_STATEMENT(z, n, data) \ |
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typedef BOOST_PP_CAT(T, BOOST_PP_INC(n)) BOOST_PP_CAT(BOOST_PP_CAT(arg, BOOST_PP_INC(n)), _type); |
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BOOST_PP_REPEAT(BOOST_SIGNALS2_NUM_ARGS, BOOST_SIGNALS2_MISC_STATEMENT, ~) |
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#undef BOOST_SIGNALS2_MISC_STATEMENT |
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#if BOOST_SIGNALS2_NUM_ARGS == 1 |
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typedef arg1_type argument_type; |
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#elif BOOST_SIGNALS2_NUM_ARGS == 2 |
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typedef arg1_type first_argument_type; |
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typedef arg2_type second_argument_type; |
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#endif |
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template<unsigned n> class arg : public |
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detail::BOOST_SIGNALS2_PREPROCESSED_ARG_N_TYPE_CLASS_NAME(BOOST_SIGNALS2_NUM_ARGS) |
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<n BOOST_SIGNALS2_PP_COMMA_IF(BOOST_SIGNALS2_NUM_ARGS) |
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BOOST_SIGNALS2_ARGS_TEMPLATE_INSTANTIATION(BOOST_SIGNALS2_NUM_ARGS)> |
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{}; |
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BOOST_STATIC_CONSTANT(int, arity = BOOST_SIGNALS2_NUM_ARGS); |
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#else // BOOST_NO_VARIADIC_TEMPLATES |
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template<unsigned n> class arg |
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{ |
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public: |
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typedef typename detail::variadic_arg_type<n, Args...>::type type; |
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}; |
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BOOST_STATIC_CONSTANT(int, arity = sizeof...(Args)); |
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#endif // BOOST_NO_VARIADIC_TEMPLATES |
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template<typename F> |
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BOOST_SIGNALS2_SLOT_CLASS_NAME(BOOST_SIGNALS2_NUM_ARGS)(const F& f) |
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{ |
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init_slot_function(f); |
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} |
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// copy constructors |
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#ifdef BOOST_NO_VARIADIC_TEMPLATES |
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template<BOOST_SIGNALS2_PREFIXED_SIGNATURE_TEMPLATE_DECL(BOOST_SIGNALS2_NUM_ARGS, Other), typename OtherSlotFunction> |
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BOOST_SIGNALS2_SLOT_CLASS_NAME(BOOST_SIGNALS2_NUM_ARGS)(const BOOST_SIGNALS2_SLOT_CLASS_NAME(BOOST_SIGNALS2_NUM_ARGS) |
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<BOOST_SIGNALS2_PREFIXED_SIGNATURE_TEMPLATE_INSTANTIATION(BOOST_SIGNALS2_NUM_ARGS, Other), OtherSlotFunction> &other_slot): |
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slot_base(other_slot), _slot_function(other_slot._slot_function) |
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{ |
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} |
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#endif |
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template<typename Signature, typename OtherSlotFunction> |
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BOOST_SIGNALS2_SLOT_CLASS_NAME(BOOST_SIGNALS2_NUM_ARGS)(const slot<Signature, OtherSlotFunction> &other_slot): |
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slot_base(other_slot), _slot_function(other_slot._slot_function) |
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{ |
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} |
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// bind syntactic sugar |
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BOOST_SIGNALS2_SLOT_N_BINDING_CONSTRUCTORS |
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// invocation |
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R operator()(BOOST_SIGNALS2_SIGNATURE_FULL_ARGS(BOOST_SIGNALS2_NUM_ARGS)) |
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{ |
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locked_container_type locked_objects = lock(); |
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return _slot_function(BOOST_SIGNALS2_SIGNATURE_ARG_NAMES(BOOST_SIGNALS2_NUM_ARGS)); |
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} |
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R operator()(BOOST_SIGNALS2_SIGNATURE_FULL_ARGS(BOOST_SIGNALS2_NUM_ARGS)) const |
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{ |
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locked_container_type locked_objects = lock(); |
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return _slot_function(BOOST_SIGNALS2_SIGNATURE_ARG_NAMES(BOOST_SIGNALS2_NUM_ARGS)); |
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} |
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// tracking |
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BOOST_SIGNALS2_SLOT_CLASS_NAME(BOOST_SIGNALS2_NUM_ARGS)& track(const weak_ptr<void> &tracked) { |
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_tracked_objects.push_back(tracked); |
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return *this; |
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} |
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BOOST_SIGNALS2_SLOT_CLASS_NAME(BOOST_SIGNALS2_NUM_ARGS)& track(const signal_base &signal) |
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{ |
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track_signal(signal); |
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return *this; |
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} |
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BOOST_SIGNALS2_SLOT_CLASS_NAME(BOOST_SIGNALS2_NUM_ARGS)& track(const slot_base &slot) |
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{ |
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tracked_container_type::const_iterator it; |
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for(it = slot.tracked_objects().begin(); it != slot.tracked_objects().end(); ++it) |
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{ |
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_tracked_objects.push_back(*it); |
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} |
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return *this; |
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} |
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template<typename ForeignWeakPtr> |
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BOOST_SIGNALS2_SLOT_CLASS_NAME(BOOST_SIGNALS2_NUM_ARGS)& track_foreign(const ForeignWeakPtr &tracked, |
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typename weak_ptr_traits<ForeignWeakPtr>::shared_type * /*SFINAE*/ = 0) |
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{ |
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_tracked_objects.push_back(detail::foreign_void_weak_ptr(tracked)); |
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return *this; |
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} |
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template<typename ForeignSharedPtr> |
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BOOST_SIGNALS2_SLOT_CLASS_NAME(BOOST_SIGNALS2_NUM_ARGS)& track_foreign(const ForeignSharedPtr &tracked, |
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typename shared_ptr_traits<ForeignSharedPtr>::weak_type * /*SFINAE*/ = 0) |
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{ |
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_tracked_objects.push_back |
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( |
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detail::foreign_void_weak_ptr |
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( |
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typename shared_ptr_traits<ForeignSharedPtr>::weak_type(tracked) |
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) |
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); |
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return *this; |
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} |
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const slot_function_type& slot_function() const {return _slot_function;} |
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slot_function_type& slot_function() {return _slot_function;} |
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private: |
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template<typename F> |
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void init_slot_function(const F& f) |
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{ |
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_slot_function = detail::get_invocable_slot(f, detail::tag_type(f)); |
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signals2::detail::tracked_objects_visitor visitor(this); |
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boost::visit_each(visitor, f); |
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} |
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SlotFunction _slot_function; |
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}; |
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#ifdef BOOST_NO_VARIADIC_TEMPLATES |
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namespace detail |
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{ |
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template<unsigned arity, typename Signature, typename SlotFunction> |
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class slotN; |
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// partial template specialization |
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template<typename Signature, typename SlotFunction> |
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class slotN<BOOST_SIGNALS2_NUM_ARGS, Signature, SlotFunction> |
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{ |
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public: |
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typedef BOOST_SIGNALS2_SLOT_CLASS_NAME(BOOST_SIGNALS2_NUM_ARGS)< |
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BOOST_SIGNALS2_PORTABLE_SIGNATURE(BOOST_SIGNALS2_NUM_ARGS, Signature), |
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SlotFunction> type; |
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}; |
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} |
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#endif |
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} // end namespace signals2 |
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} // end namespace boost |
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#undef BOOST_SIGNALS2_NUM_ARGS
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