188 lines
7.1 KiB
C++
188 lines
7.1 KiB
C++
// 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_CXX11_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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#ifdef BOOST_NO_CXX11_VARIADIC_TEMPLATES
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template<typename Signature, typename SlotFunction> class slot;
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#else
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template<typename Signature, typename SlotFunction = boost::function<Signature> >
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class slot;
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#if BOOST_WORKAROUND(BOOST_MSVC, <= 1900)
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template<typename Signature, typename SlotFunction> class slot{};
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#endif
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#endif // BOOST_NO_CXX11_VARIADIC_TEMPLATES
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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_CXX11_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_CXX11_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_CXX11_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_CXX11_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_CXX11_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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