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