// Boost.Signals library
-//
-// Copyright (C) 2001 Doug Gregor (gregod@cs.rpi.edu)
-//
-// Permission to copy, use, sell and distribute this software is granted
-// provided this copyright notice appears in all copies.
-// Permission to modify the code and to distribute modified code is granted
-// provided this copyright notice appears in all copies, and a notice
-// that the code was modified is included with the copyright notice.
-//
-// This software is provided "as is" without express or implied warranty,
-// and with no claim as to its suitability for any purpose.
-
+
+// 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
+// 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/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>
-# include <string>
#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
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_STRUCT(BOOST_SIGNALS_COPY_PARMS)
+ BOOST_SIGNALS_INIT_ARGS
+ {
+ }
BOOST_SIGNALS_ARGS_AS_MEMBERS
};
// 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
+ 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;
+ 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) {}
+ caller(args_type a) : args(a) {}
template<typename Pair>
R operator()(const Pair& slot) const
{
- F* target = const_cast<F*>(any_cast<F>(&slot.second.second));
+ 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
+ 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;
+ 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) {}
+ caller(args_type a) : args(a) {}
template<typename Pair>
unusable operator()(const Pair& slot) const
{
- F* target = const_cast<F*>(any_cast<F>(&slot.second.second));
+ F* target = const_cast<F*>(unsafe_any_cast<F>(&slot.second));
(*target)(BOOST_SIGNALS_BOUND_ARGS);
- return unusable();
+ return unusable();
}
- };
+ };
};
} // namespace detail
} // namespace BOOST_SIGNALS_NAMESPACE
// The actual signalN class
template<
typename R,
- BOOST_SIGNALS_TEMPLATE_PARMS
+ 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>
+ BOOST_SIGNALS_TEMPLATE_ARGS>
>
- class BOOST_SIGNALS_SIGNAL :
+ class BOOST_SIGNALS_SIGNAL :
public BOOST_SIGNALS_NAMESPACE::detail::signal_base, // management of slot list
public BOOST_SIGNALS_NAMESPACE::trackable // signals are trackable
{
private:
// The real slot name comparison object type
- typedef BOOST_SIGNALS_NAMESPACE::detail::any_bridge_compare<GroupCompare, Group>
+ 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>
+ 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
public:
// Combiner's result type
- typedef typename Combiner::result_type result_type;
+ typedef typename Combiner::result_type result_type;
// Combiner type
typedef Combiner combiner_type;
typedef Group group_type;
typedef GroupCompare group_compare_type;
- typedef typename BOOST_SIGNALS_NAMESPACE::detail::slot_call_iterator_generator<
- call_bound_slot,
- slot_iterator>::type slot_call_iterator;
+ typedef BOOST_SIGNALS_NAMESPACE::detail::slot_call_iterator<
+ call_bound_slot, iterator> slot_call_iterator;
- explicit
+ explicit
BOOST_SIGNALS_SIGNAL(const Combiner& c = Combiner(),
- const GroupCompare& comp = GroupCompare()) :
- BOOST_SIGNALS_NAMESPACE::detail::signal_base(real_group_compare_type(comp)),
- combiner(c)
+ 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::connection connect(const group_type&, const slot_type&);
+ BOOST_SIGNALS_NAMESPACE::connection
+ connect(const slot_type&,
+ BOOST_SIGNALS_NAMESPACE::connect_position at
+ = BOOST_SIGNALS_NAMESPACE::at_back);
- // Disconnect a named slot
+
+ 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;
- private:
- Combiner combiner;
+ Combiner& combiner()
+ { return *unsafe_any_cast<Combiner>(&impl->combiner_); }
+
+ const Combiner& combiner() const
+ { return *unsafe_any_cast<const Combiner>(&impl->combiner_); }
};
template<
typename GroupCompare,
typename SlotFunction
>
- BOOST_SIGNALS_NAMESPACE::connection
- BOOST_SIGNALS_SIGNAL<
- R, BOOST_SIGNALS_TEMPLATE_ARGS
- BOOST_SIGNALS_COMMA_IF_NONZERO_ARGS
+ 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)
+ >::connect(const slot_type& in_slot,
+ BOOST_SIGNALS_NAMESPACE::connect_position at)
{
- // If the slot has been disconnected, just return a disconnected
+ 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(),
- any(),
- in_slot.get_bound_objects());
+ return impl->connect_slot(in_slot.get_slot_function(), stored_group(),
+ in_slot.get_data(), at);
}
template<
typename GroupCompare,
typename SlotFunction
>
- BOOST_SIGNALS_NAMESPACE::connection
- BOOST_SIGNALS_SIGNAL<
- R, BOOST_SIGNALS_TEMPLATE_ARGS
- BOOST_SIGNALS_COMMA_IF_NONZERO_ARGS
+ 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)
+ >::connect(const group_type& group,
+ const slot_type& in_slot,
+ BOOST_SIGNALS_NAMESPACE::connect_position at)
{
- return impl->connect_slot(in_slot.get_slot_function(),
- group,
- in_slot.get_bound_objects());
+ // 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 Group,
typename GroupCompare,
typename SlotFunction
- >
- typename BOOST_SIGNALS_SIGNAL<
- R, BOOST_SIGNALS_TEMPLATE_ARGS
- BOOST_SIGNALS_COMMA_IF_NONZERO_ARGS
+ >
+ 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
+ BOOST_SIGNALS_SIGNAL<
+ R, BOOST_SIGNALS_TEMPLATE_ARGS
+ BOOST_SIGNALS_COMMA_IF_NONZERO_ARGS
Combiner, Group, GroupCompare, SlotFunction
>::operator()(BOOST_SIGNALS_PARMS)
{
BOOST_SIGNALS_NAMESPACE::detail::call_notification notification(this->impl);
// Construct a function object that will call the underlying slots
- // with the given arguments.
+ // with the given arguments.
#if BOOST_SIGNALS_NUM_ARGS == 0
BOOST_SIGNALS_ARGS_STRUCT_INST args;
#else
#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(BOOST_SIGNALS_NAMESPACE::detail::make_slot_call_iterator(
- notification.impl->slots_.begin(), impl->slots_.end(), f),
- BOOST_SIGNALS_NAMESPACE::detail::make_slot_call_iterator(
- notification.impl->slots_.end(), impl->slots_.end(), f));
+ 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 Group,
typename GroupCompare,
typename SlotFunction
- >
- typename BOOST_SIGNALS_SIGNAL<
- R, BOOST_SIGNALS_TEMPLATE_ARGS
- BOOST_SIGNALS_COMMA_IF_NONZERO_ARGS
+ >
+ 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
+ BOOST_SIGNALS_SIGNAL<
+ R, BOOST_SIGNALS_TEMPLATE_ARGS
+ BOOST_SIGNALS_COMMA_IF_NONZERO_ARGS
Combiner, Group, GroupCompare, SlotFunction
>::operator()(BOOST_SIGNALS_PARMS) const
{
BOOST_SIGNALS_NAMESPACE::detail::call_notification notification(this->impl);
// Construct a function object that will call the underlying slots
- // with the given arguments.
+ // with the given arguments.
#if BOOST_SIGNALS_NUM_ARGS == 0
BOOST_SIGNALS_ARGS_STRUCT_INST args;
#else
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(BOOST_SIGNALS_NAMESPACE::detail::make_slot_call_iterator(
- notification.impl->slots_.begin(), impl->slots_.end(), f),
- BOOST_SIGNALS_NAMESPACE::detail::make_slot_call_iterator(
- notification.impl->slots_.end(), impl->slots_.end(), f));
+ 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_SIGNALS_FUNCTION
#undef BOOST_SIGNALS_SIGNAL
#undef BOOST_SIGNALS_COMMA_IF_NONZERO_ARGS
+
+#ifdef BOOST_HAS_ABI_HEADERS
+# include BOOST_ABI_SUFFIX
+#endif
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