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Diffstat (limited to '3rdParty/Boost/boost/signals/signal_template.hpp')
-rw-r--r-- | 3rdParty/Boost/boost/signals/signal_template.hpp | 410 |
1 files changed, 410 insertions, 0 deletions
diff --git a/3rdParty/Boost/boost/signals/signal_template.hpp b/3rdParty/Boost/boost/signals/signal_template.hpp new file mode 100644 index 0000000..a8420b6 --- /dev/null +++ b/3rdParty/Boost/boost/signals/signal_template.hpp @@ -0,0 +1,410 @@ +// Boost.Signals library + +// 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 intentionally does not have include guards, because it is meant +// to be included multiple times (one for each signalN class). The +// BOOST_SIGNALS_SIGNAL_TEMPLATE_HEADER_INCLUDED macro merely serves to +// suppress reinclusion of the files that this header depends on. + +#ifndef BOOST_SIGNALS_SIGNAL_TEMPLATE_HEADER_INCLUDED +#define BOOST_SIGNALS_SIGNAL_TEMPLATE_HEADER_INCLUDED +# include <boost/config.hpp> +# include <boost/signals/connection.hpp> +# include <boost/utility.hpp> +# include <boost/ref.hpp> +# include <boost/signals/slot.hpp> +# include <boost/last_value.hpp> +# include <boost/signals/detail/signal_base.hpp> +# include <boost/signals/detail/slot_call_iterator.hpp> +# include <boost/mpl/bool.hpp> +# include <boost/type_traits/is_convertible.hpp> +# include <cassert> +# include <functional> +# include <memory> +#endif // !BOOST_SIGNALS_SIGNAL_TEMPLATE_HEADER_INCLUDED + +#ifdef BOOST_HAS_ABI_HEADERS +# include BOOST_ABI_PREFIX +#endif + +// Include the appropriate functionN header +#define BOOST_SIGNAL_FUNCTION_N_HEADER BOOST_JOIN(<boost/function/function,BOOST_SIGNALS_NUM_ARGS.hpp>) +#include BOOST_SIGNAL_FUNCTION_N_HEADER + +// Determine if a comma should follow a listing of the arguments/parameters +#if BOOST_SIGNALS_NUM_ARGS == 0 +# define BOOST_SIGNALS_COMMA_IF_NONZERO_ARGS +#else +# define BOOST_SIGNALS_COMMA_IF_NONZERO_ARGS , +#endif // BOOST_SIGNALS_NUM_ARGS > 0 + +// Define class names used +#define BOOST_SIGNALS_SIGNAL BOOST_JOIN(signal,BOOST_SIGNALS_NUM_ARGS) +#define BOOST_SIGNALS_FUNCTION BOOST_JOIN(function,BOOST_SIGNALS_NUM_ARGS) +#define BOOST_SIGNALS_ARGS_STRUCT BOOST_JOIN(args,BOOST_SIGNALS_NUM_ARGS) +#define BOOST_SIGNALS_CALL_BOUND BOOST_JOIN(call_bound,BOOST_SIGNALS_NUM_ARGS) + +// Define commonly-used instantiations +#define BOOST_SIGNALS_ARGS_STRUCT_INST \ + BOOST_SIGNALS_NAMESPACE::detail::BOOST_SIGNALS_ARGS_STRUCT<BOOST_SIGNALS_TEMPLATE_ARGS> + +namespace boost { + namespace BOOST_SIGNALS_NAMESPACE { + namespace detail { + // Holds the arguments for a bound slot call in a single place + template<BOOST_SIGNALS_TEMPLATE_PARMS + BOOST_SIGNALS_COMMA_IF_NONZERO_ARGS + typename Dummy = int> + struct BOOST_SIGNALS_ARGS_STRUCT { + BOOST_SIGNALS_ARGS_STRUCT(BOOST_SIGNALS_COPY_PARMS) + BOOST_SIGNALS_INIT_ARGS + { + } + + BOOST_SIGNALS_ARGS_AS_MEMBERS + }; + + // Function object that calls the function object given to it, passing + // the bound arguments along to that underlying function object + template<typename R> + struct BOOST_SIGNALS_CALL_BOUND { + template<BOOST_SIGNALS_TEMPLATE_PARMS + BOOST_SIGNALS_COMMA_IF_NONZERO_ARGS + typename F> + struct caller { + typedef BOOST_SIGNALS_ARGS_STRUCT<BOOST_SIGNALS_TEMPLATE_ARGS>* + args_type; + + args_type args; + + typedef R result_type; + + caller() {} + caller(args_type a) : args(a) {} + + template<typename Pair> + R operator()(const Pair& slot) const + { + F* target = const_cast<F*>(unsafe_any_cast<F>(&slot.second)); + return (*target)(BOOST_SIGNALS_BOUND_ARGS); + } + }; + }; + + template<> + struct BOOST_SIGNALS_CALL_BOUND<void> { + template<BOOST_SIGNALS_TEMPLATE_PARMS + BOOST_SIGNALS_COMMA_IF_NONZERO_ARGS + typename F> + struct caller { + typedef BOOST_SIGNALS_ARGS_STRUCT<BOOST_SIGNALS_TEMPLATE_ARGS>* + args_type; + + args_type args; + + typedef unusable result_type; + + caller(args_type a) : args(a) {} + + template<typename Pair> + unusable operator()(const Pair& slot) const + { + F* target = const_cast<F*>(unsafe_any_cast<F>(&slot.second)); + (*target)(BOOST_SIGNALS_BOUND_ARGS); + return unusable(); + } + }; + }; + } // namespace detail + } // namespace BOOST_SIGNALS_NAMESPACE + + // The actual signalN class + template< + typename R, + BOOST_SIGNALS_TEMPLATE_PARMS + BOOST_SIGNALS_COMMA_IF_NONZERO_ARGS + typename Combiner = last_value<R>, + typename Group = int, + typename GroupCompare = std::less<Group>, + typename SlotFunction = BOOST_SIGNALS_FUNCTION< + R BOOST_SIGNALS_COMMA_IF_NONZERO_ARGS + BOOST_SIGNALS_TEMPLATE_ARGS> + > + class BOOST_SIGNALS_SIGNAL : + public BOOST_SIGNALS_NAMESPACE::detail::signal_base, // management of slot list + public BOOST_SIGNALS_NAMESPACE::trackable // signals are trackable + { + public: + // The slot function type + typedef SlotFunction slot_function_type; + + // Result type of a slot + typedef typename BOOST_SIGNALS_NAMESPACE::detail::slot_result_type<R>::type + slot_result_type; + + // Argument types + BOOST_SIGNALS_ARG_TYPES + +#if BOOST_SIGNALS_NUM_ARGS == 1 + typedef T1 argument_type; +#elif BOOST_SIGNALS_NUM_ARGS == 2 + typedef T1 first_argument_type; + typedef T2 second_argument_type; +#endif + + private: + // The real slot name comparison object type + typedef BOOST_SIGNALS_NAMESPACE::detail::group_bridge_compare<GroupCompare, Group> + real_group_compare_type; + + // The function object passed to the slot call iterator that will call + // the underlying slot function with its arguments bound + typedef BOOST_SIGNALS_NAMESPACE::detail::BOOST_SIGNALS_CALL_BOUND<R> + outer_bound_slot_caller; + typedef typename outer_bound_slot_caller::template + caller<BOOST_SIGNALS_TEMPLATE_ARGS + BOOST_SIGNALS_COMMA_IF_NONZERO_ARGS + slot_function_type> + call_bound_slot; + + public: + // Combiner's result type + typedef typename Combiner::result_type result_type; + + // Combiner type + typedef Combiner combiner_type; + + // Slot type + typedef slot<slot_function_type> slot_type; + + // Slot name type and comparison + typedef Group group_type; + typedef GroupCompare group_compare_type; + + typedef BOOST_SIGNALS_NAMESPACE::detail::slot_call_iterator< + call_bound_slot, iterator> slot_call_iterator; + + explicit + BOOST_SIGNALS_SIGNAL(const Combiner& c = Combiner(), + const GroupCompare& comp = GroupCompare()) : + BOOST_SIGNALS_NAMESPACE::detail::signal_base(real_group_compare_type(comp), + c) + { + } + + // Connect a slot to this signal + BOOST_SIGNALS_NAMESPACE::connection + connect(const slot_type&, + BOOST_SIGNALS_NAMESPACE::connect_position at + = BOOST_SIGNALS_NAMESPACE::at_back); + + + BOOST_SIGNALS_NAMESPACE::connection + connect(const group_type&, const slot_type&, + BOOST_SIGNALS_NAMESPACE::connect_position at + = BOOST_SIGNALS_NAMESPACE::at_back); + +#if BOOST_WORKAROUND(BOOST_MSVC, <= 1300) + // MSVC 6.0 and 7.0 don't handle the is_convertible test well + void disconnect(const group_type& group) + { + impl->disconnect(group); + } +#else + template<typename T> + void disconnect(const T& t) + { + typedef mpl::bool_<(is_convertible<T, group_type>::value)> is_group; + this->do_disconnect(t, is_group()); + } + + private: + // Disconnect a named slot + void do_disconnect(const group_type& group, mpl::bool_<true>) + { + impl->disconnect(group); + } + + template<typename Function> + void do_disconnect(const Function& f, mpl::bool_<false>) + { + // Notify the slot handling code that we are iterating through the slots + BOOST_SIGNALS_NAMESPACE::detail::call_notification notification(this->impl); + + for (iterator i = impl->slots_.begin(); i != impl->slots_.end(); ++i) { + slot_function_type& s = *unsafe_any_cast<slot_function_type>(&i->second); + if (s == f) i->first.disconnect(); + } + } +#endif + + public: + + // Emit the signal + result_type operator()(BOOST_SIGNALS_PARMS); + result_type operator()(BOOST_SIGNALS_PARMS) const; + + Combiner& combiner() + { return *unsafe_any_cast<Combiner>(&impl->combiner_); } + + const Combiner& combiner() const + { return *unsafe_any_cast<const Combiner>(&impl->combiner_); } + }; + + template< + typename R, + BOOST_SIGNALS_TEMPLATE_PARMS + BOOST_SIGNALS_COMMA_IF_NONZERO_ARGS + typename Combiner, + typename Group, + typename GroupCompare, + typename SlotFunction + > + BOOST_SIGNALS_NAMESPACE::connection + BOOST_SIGNALS_SIGNAL< + R, BOOST_SIGNALS_TEMPLATE_ARGS + BOOST_SIGNALS_COMMA_IF_NONZERO_ARGS + Combiner, Group, GroupCompare, SlotFunction + >::connect(const slot_type& in_slot, + BOOST_SIGNALS_NAMESPACE::connect_position at) + { + using boost::BOOST_SIGNALS_NAMESPACE::detail::stored_group; + + // If the slot has been disconnected, just return a disconnected + // connection + if (!in_slot.is_active()) { + return BOOST_SIGNALS_NAMESPACE::connection(); + } + + return impl->connect_slot(in_slot.get_slot_function(), stored_group(), + in_slot.get_data(), at); + } + + template< + typename R, + BOOST_SIGNALS_TEMPLATE_PARMS + BOOST_SIGNALS_COMMA_IF_NONZERO_ARGS + typename Combiner, + typename Group, + typename GroupCompare, + typename SlotFunction + > + BOOST_SIGNALS_NAMESPACE::connection + BOOST_SIGNALS_SIGNAL< + R, BOOST_SIGNALS_TEMPLATE_ARGS + BOOST_SIGNALS_COMMA_IF_NONZERO_ARGS + Combiner, Group, GroupCompare, SlotFunction + >::connect(const group_type& group, + const slot_type& in_slot, + BOOST_SIGNALS_NAMESPACE::connect_position at) + { + // If the slot has been disconnected, just return a disconnected + // connection + if (!in_slot.is_active()) { + return BOOST_SIGNALS_NAMESPACE::connection(); + } + + return impl->connect_slot(in_slot.get_slot_function(), group, + in_slot.get_data(), at); + } + + template< + typename R, + BOOST_SIGNALS_TEMPLATE_PARMS + BOOST_SIGNALS_COMMA_IF_NONZERO_ARGS + typename Combiner, + typename Group, + typename GroupCompare, + typename SlotFunction + > + typename BOOST_SIGNALS_SIGNAL< + R, BOOST_SIGNALS_TEMPLATE_ARGS + BOOST_SIGNALS_COMMA_IF_NONZERO_ARGS + Combiner, Group, GroupCompare, SlotFunction>::result_type + BOOST_SIGNALS_SIGNAL< + R, BOOST_SIGNALS_TEMPLATE_ARGS + BOOST_SIGNALS_COMMA_IF_NONZERO_ARGS + Combiner, Group, GroupCompare, SlotFunction + >::operator()(BOOST_SIGNALS_PARMS) + { + // Notify the slot handling code that we are making a call + BOOST_SIGNALS_NAMESPACE::detail::call_notification notification(this->impl); + + // Construct a function object that will call the underlying slots + // with the given arguments. +#if BOOST_SIGNALS_NUM_ARGS == 0 + BOOST_SIGNALS_ARGS_STRUCT_INST args; +#else + BOOST_SIGNALS_ARGS_STRUCT_INST args(BOOST_SIGNALS_ARGS); +#endif // BOOST_SIGNALS_NUM_ARGS > 0 + call_bound_slot f(&args); + + typedef typename call_bound_slot::result_type result_type; + optional<result_type> cache; + // Let the combiner call the slots via a pair of input iterators + return combiner()(slot_call_iterator(notification.impl->slots_.begin(), + impl->slots_.end(), f, cache), + slot_call_iterator(notification.impl->slots_.end(), + impl->slots_.end(), f, cache)); + } + + template< + typename R, + BOOST_SIGNALS_TEMPLATE_PARMS + BOOST_SIGNALS_COMMA_IF_NONZERO_ARGS + typename Combiner, + typename Group, + typename GroupCompare, + typename SlotFunction + > + typename BOOST_SIGNALS_SIGNAL< + R, BOOST_SIGNALS_TEMPLATE_ARGS + BOOST_SIGNALS_COMMA_IF_NONZERO_ARGS + Combiner, Group, GroupCompare, SlotFunction>::result_type + BOOST_SIGNALS_SIGNAL< + R, BOOST_SIGNALS_TEMPLATE_ARGS + BOOST_SIGNALS_COMMA_IF_NONZERO_ARGS + Combiner, Group, GroupCompare, SlotFunction + >::operator()(BOOST_SIGNALS_PARMS) const + { + // Notify the slot handling code that we are making a call + BOOST_SIGNALS_NAMESPACE::detail::call_notification notification(this->impl); + + // Construct a function object that will call the underlying slots + // with the given arguments. +#if BOOST_SIGNALS_NUM_ARGS == 0 + BOOST_SIGNALS_ARGS_STRUCT_INST args; +#else + BOOST_SIGNALS_ARGS_STRUCT_INST args(BOOST_SIGNALS_ARGS); +#endif // BOOST_SIGNALS_NUM_ARGS > 0 + + call_bound_slot f(&args); + + typedef typename call_bound_slot::result_type result_type; + optional<result_type> cache; + + // Let the combiner call the slots via a pair of input iterators + return combiner()(slot_call_iterator(notification.impl->slots_.begin(), + impl->slots_.end(), f, cache), + slot_call_iterator(notification.impl->slots_.end(), + impl->slots_.end(), f, cache)); + } +} // namespace boost + +#undef BOOST_SIGNAL_FUNCTION_N_HEADER +#undef BOOST_SIGNALS_ARGS_STRUCT_INST +#undef BOOST_SIGNALS_CALL_BOUND +#undef BOOST_SIGNALS_ARGS_STRUCT +#undef BOOST_SIGNALS_FUNCTION +#undef BOOST_SIGNALS_SIGNAL +#undef BOOST_SIGNALS_COMMA_IF_NONZERO_ARGS + +#ifdef BOOST_HAS_ABI_HEADERS +# include BOOST_ABI_SUFFIX +#endif |