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-rw-r--r--boost/signals/slot.hpp157
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diff --git a/boost/signals/slot.hpp b/boost/signals/slot.hpp
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-// 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
-
-#ifndef BOOST_SIGNALS_SLOT_HEADER
-#define BOOST_SIGNALS_SLOT_HEADER
-
-#include <boost/signals/detail/signals_common.hpp>
-#include <boost/signals/connection.hpp>
-#include <boost/signals/trackable.hpp>
-#include <boost/visit_each.hpp>
-#include <boost/shared_ptr.hpp>
-#include <cassert>
-
-#ifdef BOOST_HAS_ABI_HEADERS
-# include BOOST_ABI_PREFIX
-#endif
-
-namespace boost {
- namespace BOOST_SIGNALS_NAMESPACE {
- namespace detail {
- class BOOST_SIGNALS_DECL slot_base {
- // We would have to enumerate all of the signalN classes here as
- // friends to make this private (as it otherwise should be). We can't
- // name all of them because we don't know how many there are.
- public:
- struct data_t {
- std::vector<const trackable*> bound_objects;
- connection watch_bound_objects;
- };
- shared_ptr<data_t> get_data() const { return data; }
-
- // Get the set of bound objects
- std::vector<const trackable*>& get_bound_objects() const
- { return data->bound_objects; }
-
- // Determine if this slot is still "active", i.e., all of the bound
- // objects still exist
- bool is_active() const
- { return data->watch_bound_objects.connected(); }
-
- protected:
- // Create a connection for this slot
- void create_connection();
-
- shared_ptr<data_t> data;
-
- private:
- static void bound_object_destructed(void*, void*) {}
- };
- } // end namespace detail
-
- // Get the slot so that it can be copied
- template<typename F>
- reference_wrapper<const F>
- get_invocable_slot(const F& f, BOOST_SIGNALS_NAMESPACE::detail::signal_tag)
- { return reference_wrapper<const F>(f); }
-
- template<typename F>
- const F&
- get_invocable_slot(const F& f, BOOST_SIGNALS_NAMESPACE::detail::reference_tag)
- { return f; }
-
- template<typename F>
- const F&
- get_invocable_slot(const F& f, BOOST_SIGNALS_NAMESPACE::detail::value_tag)
- { return f; }
-
- // Get the slot so that it can be inspected for trackable objects
- template<typename F>
- const F&
- get_inspectable_slot(const F& f, BOOST_SIGNALS_NAMESPACE::detail::signal_tag)
- { return f; }
-
- template<typename F>
- const F&
- get_inspectable_slot(const reference_wrapper<F>& f, BOOST_SIGNALS_NAMESPACE::detail::reference_tag)
- { return f.get(); }
-
- template<typename F>
- const F&
- get_inspectable_slot(const F& f, BOOST_SIGNALS_NAMESPACE::detail::value_tag)
- { return f; }
-
- // Determines the type of the slot - is it a signal, a reference to a
- // slot or just a normal slot.
- template<typename F>
- typename BOOST_SIGNALS_NAMESPACE::detail::get_slot_tag<F>::type
- tag_type(const F&)
- {
- typedef typename BOOST_SIGNALS_NAMESPACE::detail::get_slot_tag<F>::type
- the_tag_type;
- the_tag_type tag = the_tag_type();
- return tag;
- }
-
- } // end namespace BOOST_SIGNALS_NAMESPACE
-
- template<typename SlotFunction>
- class slot : public BOOST_SIGNALS_NAMESPACE::detail::slot_base {
- typedef BOOST_SIGNALS_NAMESPACE::detail::slot_base inherited;
- typedef typename inherited::data_t data_t;
-
- public:
- template<typename F>
- slot(const F& f) : slot_function(BOOST_SIGNALS_NAMESPACE::get_invocable_slot(f, BOOST_SIGNALS_NAMESPACE::tag_type(f)))
- {
- this->data.reset(new data_t);
-
- // Visit each of the bound objects and store them for later use
- // An exception thrown here will allow the basic_connection to be
- // destroyed when this goes out of scope, and no other connections
- // have been made.
- BOOST_SIGNALS_NAMESPACE::detail::bound_objects_visitor
- do_bind(this->data->bound_objects);
- visit_each(do_bind,
- BOOST_SIGNALS_NAMESPACE::get_inspectable_slot
- (f, BOOST_SIGNALS_NAMESPACE::tag_type(f)));
- create_connection();
- }
-
-#ifdef __BORLANDC__
- template<typename F>
- slot(F* f) : slot_function(f)
- {
- this->data.reset(new data_t);
- create_connection();
- }
-#endif // __BORLANDC__
-
- // We would have to enumerate all of the signalN classes here as friends
- // to make this private (as it otherwise should be). We can't name all of
- // them because we don't know how many there are.
- public:
- // Get the slot function to call the actual slot
- const SlotFunction& get_slot_function() const { return slot_function; }
-
- void release() const { data->watch_bound_objects.set_controlling(false); }
-
- private:
- slot(); // no default constructor
- slot& operator=(const slot&); // no assignment operator
-
- SlotFunction slot_function;
- };
-} // end namespace boost
-
-#ifdef BOOST_HAS_ABI_HEADERS
-# include BOOST_ABI_SUFFIX
-#endif
-
-#endif // BOOST_SIGNALS_SLOT_HEADER