// 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.
-
-// For more information, see http://www.boost.org
+
+// Copyright Douglas Gregor 2001-2006. 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/libs/signals
#ifndef BOOST_SIGNAL_HPP
#define BOOST_SIGNAL_HPP
-#define BOOST_SIGNALS_MAX_ARGS 10
+#ifndef BOOST_SIGNALS_MAX_ARGS
+# define BOOST_SIGNALS_MAX_ARGS 10
+#endif
#include <boost/config.hpp>
+#include <boost/type_traits/function_traits.hpp>
#include <boost/signals/signal0.hpp>
#include <boost/signals/signal1.hpp>
#include <boost/signals/signal2.hpp>
#include <boost/signals/signal8.hpp>
#include <boost/signals/signal9.hpp>
#include <boost/signals/signal10.hpp>
+#include <boost/function.hpp>
+
+#ifdef BOOST_HAS_ABI_HEADERS
+# include BOOST_ABI_PREFIX
+#endif
namespace boost {
- namespace signals {
+#ifndef BOOST_FUNCTION_NO_FUNCTION_TYPE_SYNTAX
+ namespace BOOST_SIGNALS_NAMESPACE {
namespace detail {
- // The unusable class is a placeholder for unused function arguments.
- struct unused {};
+ template<int Arity,
+ typename Signature,
+ typename Combiner,
+ typename Group,
+ typename GroupCompare,
+ typename SlotFunction>
+ class real_get_signal_impl;
- // value=1 if the given type is not "unused"
- template<typename T>
- struct count_if_used
- {
- BOOST_STATIC_CONSTANT(int, value = 1);
- };
-
- // value=0 for unused types
- template<>
- struct count_if_used<unused>
- {
- BOOST_STATIC_CONSTANT(int, value = 0);
- };
-
- // Count the number of arguments (from the given set) which are not
- // "unused" (therefore, count those arguments that are used).
- template<typename T1, typename T2, typename T3, typename T4,
- typename T5, typename T6, typename T7, typename T8,
- typename T9, typename T10>
- struct count_used_args
+ template<typename Signature,
+ typename Combiner,
+ typename Group,
+ typename GroupCompare,
+ typename SlotFunction>
+ class real_get_signal_impl<0, Signature, Combiner, Group, GroupCompare,
+ SlotFunction>
{
- BOOST_STATIC_CONSTANT(int, value =
- (count_if_used<T1>::value +
- count_if_used<T2>::value +
- count_if_used<T3>::value +
- count_if_used<T4>::value +
- count_if_used<T5>::value +
- count_if_used<T6>::value +
- count_if_used<T7>::value +
- count_if_used<T8>::value +
- count_if_used<T9>::value +
- count_if_used<T10>::value));
- };
-
- // Choose the appropriate underlying implementation
- template<int Args> struct real_get_signal_impl {};
+ typedef function_traits<Signature> traits;
- template<>
- struct real_get_signal_impl<0>
- {
- template<
- typename R,
- typename T1,
- typename T2,
- typename T3,
- typename T4,
- typename T5,
- typename T6,
- typename T7,
- typename T8,
- typename T9,
- typename T10,
- typename Combiner = last_value<R>
- >
- struct params
- {
- typedef signal0<R, Combiner> type;
- };
+ public:
+ typedef signal0<typename traits::result_type,
+ Combiner,
+ Group,
+ GroupCompare,
+ SlotFunction> type;
};
- template<>
- struct real_get_signal_impl<1>
+ template<typename Signature,
+ typename Combiner,
+ typename Group,
+ typename GroupCompare,
+ typename SlotFunction>
+ class real_get_signal_impl<1, Signature, Combiner, Group, GroupCompare,
+ SlotFunction>
{
- template<
- typename R,
- typename T1,
- typename T2,
- typename T3,
- typename T4,
- typename T5,
- typename T6,
- typename T7,
- typename T8,
- typename T9,
- typename T10,
- typename Combiner = last_value<R>
- >
- struct params
- {
- typedef signal1<R, T1, Combiner> type;
- };
+ typedef function_traits<Signature> traits;
+
+ public:
+ typedef signal1<typename traits::result_type,
+ typename traits::arg1_type,
+ Combiner,
+ Group,
+ GroupCompare,
+ SlotFunction> type;
};
- template<>
- struct real_get_signal_impl<2>
+ template<typename Signature,
+ typename Combiner,
+ typename Group,
+ typename GroupCompare,
+ typename SlotFunction>
+ class real_get_signal_impl<2, Signature, Combiner, Group, GroupCompare,
+ SlotFunction>
{
- template<
- typename R,
- typename T1,
- typename T2,
- typename T3,
- typename T4,
- typename T5,
- typename T6,
- typename T7,
- typename T8,
- typename T9,
- typename T10,
- typename Combiner = last_value<R>
- >
- struct params
- {
- typedef signal2<R, T1, T2, Combiner> type;
- };
+ typedef function_traits<Signature> traits;
+
+ public:
+ typedef signal2<typename traits::result_type,
+ typename traits::arg1_type,
+ typename traits::arg2_type,
+ Combiner,
+ Group,
+ GroupCompare,
+ SlotFunction> type;
};
- template<>
- struct real_get_signal_impl<3>
+ template<typename Signature,
+ typename Combiner,
+ typename Group,
+ typename GroupCompare,
+ typename SlotFunction>
+ class real_get_signal_impl<3, Signature, Combiner, Group, GroupCompare,
+ SlotFunction>
{
- template<
- typename R,
- typename T1,
- typename T2,
- typename T3,
- typename T4,
- typename T5,
- typename T6,
- typename T7,
- typename T8,
- typename T9,
- typename T10,
- typename Combiner = last_value<R>
- >
- struct params
- {
- typedef signal3<R, T1, T2, T3, Combiner> type;
- };
+ typedef function_traits<Signature> traits;
+
+ public:
+ typedef signal3<typename traits::result_type,
+ typename traits::arg1_type,
+ typename traits::arg2_type,
+ typename traits::arg3_type,
+ Combiner,
+ Group,
+ GroupCompare,
+ SlotFunction> type;
};
- template<>
- struct real_get_signal_impl<4>
+ template<typename Signature,
+ typename Combiner,
+ typename Group,
+ typename GroupCompare,
+ typename SlotFunction>
+ class real_get_signal_impl<4, Signature, Combiner, Group, GroupCompare,
+ SlotFunction>
{
- template<
- typename R,
- typename T1,
- typename T2,
- typename T3,
- typename T4,
- typename T5,
- typename T6,
- typename T7,
- typename T8,
- typename T9,
- typename T10,
- typename Combiner = last_value<R>
- >
- struct params
- {
- typedef signal4<R, T1, T2, T3, T4, Combiner> type;
- };
+ typedef function_traits<Signature> traits;
+
+ public:
+ typedef signal4<typename traits::result_type,
+ typename traits::arg1_type,
+ typename traits::arg2_type,
+ typename traits::arg3_type,
+ typename traits::arg4_type,
+ Combiner,
+ Group,
+ GroupCompare,
+ SlotFunction> type;
};
- template<>
- struct real_get_signal_impl<5>
+ template<typename Signature,
+ typename Combiner,
+ typename Group,
+ typename GroupCompare,
+ typename SlotFunction>
+ class real_get_signal_impl<5, Signature, Combiner, Group, GroupCompare,
+ SlotFunction>
{
- template<
- typename R,
- typename T1,
- typename T2,
- typename T3,
- typename T4,
- typename T5,
- typename T6,
- typename T7,
- typename T8,
- typename T9,
- typename T10,
- typename Combiner = last_value<R>
- >
- struct params
- {
- typedef signal5<R, T1, T2, T3, T4, T5, Combiner>
- type;
- };
+ typedef function_traits<Signature> traits;
+
+ public:
+ typedef signal5<typename traits::result_type,
+ typename traits::arg1_type,
+ typename traits::arg2_type,
+ typename traits::arg3_type,
+ typename traits::arg4_type,
+ typename traits::arg5_type,
+ Combiner,
+ Group,
+ GroupCompare,
+ SlotFunction> type;
};
- template<>
- struct real_get_signal_impl<6>
+ template<typename Signature,
+ typename Combiner,
+ typename Group,
+ typename GroupCompare,
+ typename SlotFunction>
+ class real_get_signal_impl<6, Signature, Combiner, Group, GroupCompare,
+ SlotFunction>
{
- template<
- typename R,
- typename T1,
- typename T2,
- typename T3,
- typename T4,
- typename T5,
- typename T6,
- typename T7,
- typename T8,
- typename T9,
- typename T10,
- typename Combiner = last_value<R>
- >
- struct params
- {
- typedef signal6<R, T1, T2, T3, T4, T5, T6, Combiner> type;
- };
+ typedef function_traits<Signature> traits;
+
+ public:
+ typedef signal6<typename traits::result_type,
+ typename traits::arg1_type,
+ typename traits::arg2_type,
+ typename traits::arg3_type,
+ typename traits::arg4_type,
+ typename traits::arg5_type,
+ typename traits::arg6_type,
+ Combiner,
+ Group,
+ GroupCompare,
+ SlotFunction> type;
};
- template<>
- struct real_get_signal_impl<7>
+ template<typename Signature,
+ typename Combiner,
+ typename Group,
+ typename GroupCompare,
+ typename SlotFunction>
+ class real_get_signal_impl<7, Signature, Combiner, Group, GroupCompare,
+ SlotFunction>
{
- template<
- typename R,
- typename T1,
- typename T2,
- typename T3,
- typename T4,
- typename T5,
- typename T6,
- typename T7,
- typename T8,
- typename T9,
- typename T10,
- typename Combiner = last_value<R>
- >
- struct params
- {
- typedef signal7<R, T1, T2, T3, T4, T5, T6, T7, Combiner> type;
- };
+ typedef function_traits<Signature> traits;
+
+ public:
+ typedef signal7<typename traits::result_type,
+ typename traits::arg1_type,
+ typename traits::arg2_type,
+ typename traits::arg3_type,
+ typename traits::arg4_type,
+ typename traits::arg5_type,
+ typename traits::arg6_type,
+ typename traits::arg7_type,
+ Combiner,
+ Group,
+ GroupCompare,
+ SlotFunction> type;
};
- template<>
- struct real_get_signal_impl<8>
+ template<typename Signature,
+ typename Combiner,
+ typename Group,
+ typename GroupCompare,
+ typename SlotFunction>
+ class real_get_signal_impl<8, Signature, Combiner, Group, GroupCompare,
+ SlotFunction>
{
- template<
- typename R,
- typename T1,
- typename T2,
- typename T3,
- typename T4,
- typename T5,
- typename T6,
- typename T7,
- typename T8,
- typename T9,
- typename T10,
- typename Combiner = last_value<R>
- >
- struct params
- {
- typedef signal8<R, T1, T2, T3, T4, T5, T6, T7, T8, Combiner> type;
- };
+ typedef function_traits<Signature> traits;
+
+ public:
+ typedef signal8<typename traits::result_type,
+ typename traits::arg1_type,
+ typename traits::arg2_type,
+ typename traits::arg3_type,
+ typename traits::arg4_type,
+ typename traits::arg5_type,
+ typename traits::arg6_type,
+ typename traits::arg7_type,
+ typename traits::arg8_type,
+ Combiner,
+ Group,
+ GroupCompare,
+ SlotFunction> type;
};
- template<>
- struct real_get_signal_impl<9>
+ template<typename Signature,
+ typename Combiner,
+ typename Group,
+ typename GroupCompare,
+ typename SlotFunction>
+ class real_get_signal_impl<9, Signature, Combiner, Group, GroupCompare,
+ SlotFunction>
{
- template<
- typename R,
- typename T1,
- typename T2,
- typename T3,
- typename T4,
- typename T5,
- typename T6,
- typename T7,
- typename T8,
- typename T9,
- typename T10,
- typename Combiner = last_value<R>
- >
- struct params
- {
- typedef signal9<R, T1, T2, T3, T4, T5, T6, T7, T8, T9, Combiner> type;
- };
+ typedef function_traits<Signature> traits;
+
+ public:
+ typedef signal9<typename traits::result_type,
+ typename traits::arg1_type,
+ typename traits::arg2_type,
+ typename traits::arg3_type,
+ typename traits::arg4_type,
+ typename traits::arg5_type,
+ typename traits::arg6_type,
+ typename traits::arg7_type,
+ typename traits::arg8_type,
+ typename traits::arg9_type,
+ Combiner,
+ Group,
+ GroupCompare,
+ SlotFunction> type;
};
- template<>
- struct real_get_signal_impl<10>
+ template<typename Signature,
+ typename Combiner,
+ typename Group,
+ typename GroupCompare,
+ typename SlotFunction>
+ class real_get_signal_impl<10, Signature, Combiner, Group, GroupCompare,
+ SlotFunction>
{
- template<
- typename R,
- typename T1,
- typename T2,
- typename T3,
- typename T4,
- typename T5,
- typename T6,
- typename T7,
- typename T8,
- typename T9,
- typename T10,
- typename Combiner = last_value<R>
- >
- struct params
- {
- typedef signal10<R, T1, T2, T3, T4, T5, T6, T7, T8, T9, T10,
- Combiner> type;
- };
+ typedef function_traits<Signature> traits;
+
+ public:
+ typedef signal10<typename traits::result_type,
+ typename traits::arg1_type,
+ typename traits::arg2_type,
+ typename traits::arg3_type,
+ typename traits::arg4_type,
+ typename traits::arg5_type,
+ typename traits::arg6_type,
+ typename traits::arg7_type,
+ typename traits::arg8_type,
+ typename traits::arg9_type,
+ typename traits::arg10_type,
+ Combiner,
+ Group,
+ GroupCompare,
+ SlotFunction> type;
};
- template<
- typename R,
- typename T1,
- typename T2,
- typename T3,
- typename T4,
- typename T5,
- typename T6,
- typename T7,
- typename T8,
- typename T9,
- typename T10,
- typename Combiner = last_value<R>
- >
- struct get_signal_impl
+ template<typename Signature,
+ typename Combiner,
+ typename Group,
+ typename GroupCompare,
+ typename SlotFunction>
+ struct get_signal_impl :
+ public real_get_signal_impl<(function_traits<Signature>::arity),
+ Signature,
+ Combiner,
+ Group,
+ GroupCompare,
+ SlotFunction>
{
- typedef typename real_get_signal_impl<
- (count_used_args<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10>::value)
- >::template params<R, T1, T2, T3, T4, T5, T6, T7, T8, T9, T10,
- Combiner>::type
- type;
};
+
} // end namespace detail
- } // end namespace signals
+ } // end namespace BOOST_SIGNALS_NAMESPACE
// Very lightweight wrapper around the signalN classes that allows signals to
// be created where the number of arguments does not need to be part of the
// class name.
template<
- typename R,
- typename T1 = signals::detail::unused,
- typename T2 = signals::detail::unused,
- typename T3 = signals::detail::unused,
- typename T4 = signals::detail::unused,
- typename T5 = signals::detail::unused,
- typename T6 = signals::detail::unused,
- typename T7 = signals::detail::unused,
- typename T8 = signals::detail::unused,
- typename T9 = signals::detail::unused,
- typename T10 = signals::detail::unused
+ typename Signature, // function type R (T1, T2, ..., TN)
+ typename Combiner = last_value<typename function_traits<Signature>::result_type>,
+ typename Group = int,
+ typename GroupCompare = std::less<Group>,
+ typename SlotFunction = function<Signature>
>
class signal :
- public signals::detail::get_signal_impl<R, T1, T2, T3, T4, T5, T6, T7,
- T8, T9, T10>::type
+ public BOOST_SIGNALS_NAMESPACE::detail::get_signal_impl<Signature,
+ Combiner,
+ Group,
+ GroupCompare,
+ SlotFunction>::type
{
+ typedef typename BOOST_SIGNALS_NAMESPACE::detail::get_signal_impl<
+ Signature,
+ Combiner,
+ Group,
+ GroupCompare,
+ SlotFunction>::type base_type;
+
public:
- template<typename Combiner>
- struct combiner {
- typedef typename signals::detail::get_signal_impl<R, T1, T2, T3, T4, T5,
- T6, T7, T8, T9, T10,
- Combiner>::type
- type;
- };
+ explicit signal(const Combiner& combiner = Combiner(),
+ const GroupCompare& group_compare = GroupCompare()) :
+ base_type(combiner, group_compare)
+ {
+ }
};
+#endif // ndef BOOST_FUNCTION_NO_FUNCTION_TYPE_SYNTAX
+
} // end namespace boost
+#ifdef BOOST_HAS_ABI_HEADERS
+# include BOOST_ABI_SUFFIX
+#endif
+
#endif // BOOST_SIGNAL_HPP
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