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add _va, _Ntail variadic placeholders

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This commit is contained in:
bolero-MURAKAMI 2013-07-09 00:58:31 +09:00
parent e052c3d3a9
commit 8fa8d80ca2
2 changed files with 321 additions and 61 deletions
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300
sprout/functional/bind/bind.hpp
View file

@ -5,6 +5,7 @@
#include <utility>
#include <tuple>
#include <type_traits>
#include <functional>
#include <sprout/config.hpp>
#include <sprout/index_tuple/metafunction.hpp>
#include <sprout/utility/forward.hpp>
@ -74,6 +75,17 @@ namespace sprout {
return const_cast<typename std::remove_volatile<typename std::remove_reference<CVRef>::type>::type&>(arg).get();
}
};
template<typename T>
class mu<std::reference_wrapper<T>, false, false> {
public:
typedef T& result_type;
public:
template<typename CVRef, typename Tuple>
SPROUT_CONSTEXPR result_type operator()(CVRef& arg, Tuple&) const volatile {
//return arg.get(); // ???
return const_cast<typename std::remove_volatile<typename std::remove_reference<CVRef>::type>::type&>(arg).get();
}
};
template<typename Arg>
class mu<Arg, true, false> {
private:
@ -113,7 +125,7 @@ namespace sprout {
public:
template<typename Tuple>
typename result<mu (Arg, Tuple)>::type
SPROUT_CONSTEXPR operator()(Arg const volatile&, Tuple& tuple) const volatile {
SPROUT_CONSTEXPR operator()(Arg /*const volatile&*/, Tuple& tuple) const volatile {
return sprout::forward<typename result<mu (Arg, Tuple)>::type>(
sprout::tuples::get<(sprout::is_placeholder<Arg>::value - 1)>(tuple)
);
@ -164,7 +176,7 @@ namespace sprout {
};
template<std::size_t I, typename... Types>
inline auto volget(sprout::tuples::tuple<Types...> volatile& tuple)
inline SPROUT_CONSTEXPR auto volget(sprout::tuples::tuple<Types...> volatile& tuple)
-> typename sprout::tuples::tuple_element<I, sprout::tuples::tuple<Types...> >::type volatile&
{
return sprout::tuples::get<I>(const_cast<sprout::tuples::tuple<Types...>&>(tuple));
@ -175,6 +187,151 @@ namespace sprout {
{
return sprout::tuples::get<I>(const_cast<sprout::tuples::tuple<Types...> const&>(tuple));
}
template<typename Bounds, typename = void>
struct is_variadic_bounds
: public std::false_type
{};
template<typename Bounds>
struct is_variadic_bounds<
Bounds,
typename std::enable_if<sprout::tuples::tuple_size<Bounds>::value>::type
>
: public std::integral_constant<
bool,
(sprout::is_placeholder<typename sprout::tuples::tuple_element<sprout::tuples::tuple_size<Bounds>::value - 1, Bounds>::type>::value
<= -256
)
>
{};
template<typename Bounds, typename = void>
struct tail_bounds_place
: public std::integral_constant<int, -1>
{};
template<typename Bounds>
struct tail_bounds_place<
Bounds,
typename std::enable_if<sprout::detail::is_variadic_bounds<Bounds>::value>::type
>
: public std::integral_constant<
int,
(-256
- sprout::is_placeholder<typename sprout::tuples::tuple_element<sprout::tuples::tuple_size<Bounds>::value - 1, Bounds>::type>::value
)
>
{};
template<typename Bounds, typename... Args>
struct bounds_size
: public std::integral_constant<
std::size_t,
sprout::detail::is_variadic_bounds<Bounds>::value
? (sprout::tuples::tuple_size<Bounds>::value - 1) + (sizeof...(Args) - sprout::detail::tail_bounds_place<Bounds>::value)
: sprout::tuples::tuple_size<Bounds>::value
>
{};
template<typename Bounds, typename... Args>
struct bound_indexes
: public sprout::make_index_tuple<sprout::detail::bounds_size<Bounds, Args...>::value>
{};
template<sprout::index_t I, typename Bounds>
struct is_variadic_part
: public std::integral_constant<
bool,
sprout::detail::is_variadic_bounds<Bounds>::value && (I >= sprout::tuples::tuple_size<Bounds>::value)
>
{};
template<sprout::index_t I, typename Bounds, typename = void>
struct bound_element
: public sprout::tuples::tuple_element<I, Bounds>
{};
template<sprout::index_t I, typename Bounds>
struct bound_element<
I, Bounds,
typename std::enable_if<sprout::detail::is_variadic_part<I, Bounds>::value>::type
> {
public:
typedef sprout::placeholder<I + 1 - sprout::tuples::tuple_size<Bounds>::value + sprout::detail::tail_bounds_place<Bounds>::value + 1> type;
};
template<typename Bounds, typename IndexTuple>
struct complete_bounds_impl;
template<typename Bounds, sprout::index_t... Indexes>
struct complete_bounds_impl<Bounds, sprout::index_tuple<Indexes...> > {
public:
typedef sprout::tuples::tuple<sprout::detail::bound_element<Indexes, Bounds>...> type;
};
template<typename Bounds, typename... Args>
struct complete_bounds
: public sprout::detail::complete_bounds_impl<Bounds, typename sprout::detail::bound_indexes<Bounds, Args...>::type>
{};
struct get_bound_helper {
public:
template<
sprout::index_t I, typename Bounds,
typename sprout::enabler_if<!std::is_const<Bounds>::value && !std::is_volatile<Bounds>::value>::type = sprout::enabler
>
static SPROUT_CONSTEXPR auto
get_bound(Bounds& bound_args)
-> decltype(sprout::tuples::get<I>(bound_args))
{
return sprout::tuples::get<I>(bound_args);
}
template<
sprout::index_t I, typename Bounds,
typename sprout::enabler_if<std::is_const<Bounds const>::value && !std::is_volatile<Bounds const>::value>::type = sprout::enabler
>
static SPROUT_CONSTEXPR auto
get_bound(Bounds const& bound_args)
-> decltype(sprout::tuples::get<I>(bound_args))
{
return sprout::tuples::get<I>(bound_args);
}
template<
sprout::index_t I, typename Bounds,
typename sprout::enabler_if<!std::is_const<Bounds volatile>::value && std::is_volatile<Bounds volatile>::value>::type = sprout::enabler
>
static SPROUT_CONSTEXPR auto
get_bound(Bounds volatile& bound_args)
-> decltype(sprout::detail::volget<I>(bound_args))
{
return sprout::detail::volget<I>(bound_args);
}
template<
sprout::index_t I, typename Bounds,
typename sprout::enabler_if<std::is_const<Bounds const volatile>::value && std::is_volatile<Bounds const volatile>::value>::type = sprout::enabler
>
static SPROUT_CONSTEXPR auto
get_bound(Bounds const volatile& bound_args)
-> decltype(sprout::detail::volget<I>(bound_args))
{
return sprout::detail::volget<I>(bound_args);
}
};
template<
sprout::index_t I, typename Bounds,
typename sprout::enabler_if<sprout::detail::is_variadic_part<I, typename std::remove_reference<Bounds>::type>::value>::type = sprout::enabler
>
inline SPROUT_CONSTEXPR typename sprout::detail::bound_element<I, typename std::remove_reference<Bounds>::type>::type
get_bound(Bounds&&) {
typedef typename sprout::detail::bound_element<I, typename std::remove_reference<Bounds>::type>::type type;
return type();
}
template<
sprout::index_t I, typename Bounds,
typename sprout::enabler_if<!sprout::detail::is_variadic_part<I, typename std::remove_reference<Bounds>::type>::value>::type = sprout::enabler
>
inline SPROUT_CONSTEXPR auto
get_bound(Bounds&& bound_args)
-> decltype(sprout::detail::get_bound_helper::get_bound<I>(std::forward<Bounds>(bound_args)))
{
return sprout::detail::get_bound_helper::get_bound<I>(std::forward<Bounds>(bound_args));
}
} // namespace detail
//
@ -188,28 +345,81 @@ namespace sprout {
{
private:
typedef binder self_type;
typedef typename sprout::index_pack<BoundArgs...>::type bound_indexes;
typedef sprout::tuples::tuple<BoundArgs...> bounds_type;
private:
Functor f_;
sprout::tuples::tuple<BoundArgs...> bound_args_;
bounds_type bound_args_;
private:
template<typename Result, typename... Args, sprout::index_t... Indexes>
Result call(sprout::tuples::tuple<Args...>&& args, sprout::index_tuple<Indexes...>) {
return f_(sprout::detail::mu<BoundArgs>()(sprout::tuples::get<Indexes>(bound_args_), args)...);
return f_(
sprout::detail::mu<typename sprout::detail::bound_element<Indexes, bounds_type>::type>()
(sprout::detail::get_bound<Indexes>(bound_args_), args)...
);
}
template<typename Result, typename... Args, sprout::index_t... Indexes>
SPROUT_CONSTEXPR Result call_c(sprout::tuples::tuple<Args...>&& args, sprout::index_tuple<Indexes...>) const {
return f_(sprout::detail::mu<BoundArgs>()(sprout::tuples::get<Indexes>(bound_args_), args)...);
return f_(
sprout::detail::mu<typename sprout::detail::bound_element<Indexes, bounds_type>::type const>()
(sprout::detail::get_bound<Indexes>(bound_args_), args)...
);
}
template<typename Result, typename... Args, sprout::index_t... Indexes>
Result call_v(sprout::tuples::tuple<Args...>&& args, sprout::index_tuple<Indexes...>) volatile {
return f_(sprout::detail::mu<BoundArgs>()(sprout::detail::volget<Indexes>(bound_args_), args)...);
return f_(
sprout::detail::mu<typename sprout::detail::bound_element<Indexes, bounds_type>::type volatile>()
(sprout::detail::get_bound<Indexes>(bound_args_), args)...
);
}
template<typename Result, typename... Args, sprout::index_t... Indexes>
SPROUT_CONSTEXPR Result call_cv(sprout::tuples::tuple<Args...>&& args, sprout::index_tuple<Indexes...>) const volatile {
return f_(sprout::detail::mu<BoundArgs>()(sprout::detail::volget<Indexes>(bound_args_), args)...);
return f_(
sprout::detail::mu<typename sprout::detail::bound_element<Indexes, bounds_type>::type const volatile>()
(sprout::detail::get_bound<Indexes>(bound_args_), args)...
);
}
public:
private:
template<
typename... Args, sprout::index_t... Indexes
>
static SPROUT_CONSTEXPR decltype(
std::declval<Functor&>()(
sprout::detail::mu<typename sprout::detail::bound_element<Indexes, bounds_type>::type>()
(sprout::detail::get_bound<Indexes>(std::declval<bounds_type&>()), std::declval<sprout::tuples::tuple<Args...>&>())...
)
)
call_(sprout::tuples::tuple<Args...>&& args, sprout::index_tuple<Indexes...>);
template<
typename... Args, sprout::index_t... Indexes
>
static SPROUT_CONSTEXPR decltype(
std::declval<typename std::enable_if<(sizeof...(Args) >= 0), typename std::add_const<Functor>::type>::type&>()(
sprout::detail::mu<typename sprout::detail::bound_element<Indexes, bounds_type>::type const>()
(sprout::detail::get_bound<Indexes>(std::declval<bounds_type const&>()), std::declval<sprout::tuples::tuple<Args...>&>())...
)
)
call_c_(sprout::tuples::tuple<Args...>&& args, sprout::index_tuple<Indexes...>);
template<
typename... Args, sprout::index_t... Indexes
>
static SPROUT_CONSTEXPR decltype(
std::declval<typename std::enable_if<(sizeof...(Args) >= 0), typename std::add_volatile<Functor>::type>::type&>()(
sprout::detail::mu<typename sprout::detail::bound_element<Indexes, bounds_type>::type volatile>()
(sprout::detail::get_bound<Indexes>(std::declval<bounds_type volatile&>()), std::declval<sprout::tuples::tuple<Args...>&>())...
)
)
call_v_(sprout::tuples::tuple<Args...>&& args, sprout::index_tuple<Indexes...>);
template<
typename... Args, sprout::index_t... Indexes
>
static SPROUT_CONSTEXPR decltype(
std::declval<typename std::enable_if<(sizeof...(Args) >= 0), typename std::add_cv<Functor>::type>::type&>()(
sprout::detail::mu<typename sprout::detail::bound_element<Indexes, bounds_type>::type const volatile>()
(sprout::detail::get_bound<Indexes>(std::declval<bounds_type const volatile&>()), std::declval<sprout::tuples::tuple<Args...>&>())...
)
)
call_cv_(sprout::tuples::tuple<Args...>&& args, sprout::index_tuple<Indexes...>);
public:
template<typename... Args>
explicit SPROUT_CONSTEXPR binder(Functor const& f, Args&&... args)
: f_(f)
@ -219,70 +429,49 @@ namespace sprout {
template<
typename... Args,
typename Result = decltype(
std::declval<Functor>()(
sprout::detail::mu<BoundArgs>()(
std::declval<BoundArgs&>(),
std::declval<sprout::tuples::tuple<Args...>&>()
)...
)
call_(std::declval<sprout::tuples::tuple<Args...> >(), sprout::detail::bound_indexes<bounds_type, Args...>::make())
)
>
Result operator()(Args&&... args) {
return call<Result>(
sprout::tuples::forward_as_tuple(sprout::forward<Args>(args)...),
bound_indexes()
sprout::detail::bound_indexes<bounds_type, Args...>::make()
);
}
template<
typename... Args,
typename Result = decltype(
std::declval<typename std::enable_if<(sizeof...(Args) >= 0), typename std::add_const<Functor>::type>::type>()(
sprout::detail::mu<BoundArgs>()(
std::declval<BoundArgs const&>(),
std::declval<sprout::tuples::tuple<Args...>&>()
)...
)
call_c_(std::declval<sprout::tuples::tuple<Args...> >(), sprout::detail::bound_indexes<bounds_type, Args...>::make())
)
>
SPROUT_CONSTEXPR Result operator()(Args&&... args) const {
return call_c<Result>(
sprout::tuples::forward_as_tuple(sprout::forward<Args>(args)...),
bound_indexes()
sprout::detail::bound_indexes<bounds_type, Args...>::make()
);
}
template<
typename... Args,
typename Result = decltype(
std::declval<typename std::enable_if<(sizeof...(Args) >= 0), typename std::add_volatile<Functor>::type>::type>()(
sprout::detail::mu<BoundArgs>()(
std::declval<BoundArgs volatile&>(),
std::declval<sprout::tuples::tuple<Args...>&>()
)...
)
call_v_(std::declval<sprout::tuples::tuple<Args...> >(), sprout::detail::bound_indexes<bounds_type, Args...>::make())
)
>
Result operator()(Args&&... args) volatile {
return call_v<Result>(
sprout::tuples::forward_as_tuple(sprout::forward<Args>(args)...),
bound_indexes()
sprout::detail::bound_indexes<bounds_type, Args...>::make()
);
}
template<
typename... Args,
typename Result = decltype(
std::declval<typename std::enable_if<(sizeof...(Args) >= 0), typename std::add_cv<Functor>::type>::type>()(
sprout::detail::mu<BoundArgs>()(
std::declval<BoundArgs const volatile&>(),
std::declval<sprout::tuples::tuple<Args...>&>()
)...
)
call_cv_(std::declval<sprout::tuples::tuple<Args...> >(), sprout::detail::bound_indexes<bounds_type, Args...>::make())
)
>
SPROUT_CONSTEXPR Result operator()(Args&&... args) const volatile {
return call_cv<Result>(
sprout::tuples::forward_as_tuple(sprout::forward<Args>(args)...),
bound_indexes()
sprout::detail::bound_indexes<bounds_type, Args...>::make()
);
}
};
@ -296,7 +485,7 @@ namespace sprout {
class res_binder<Result, Functor(BoundArgs...)> {
private:
typedef res_binder self_type;
typedef typename sprout::index_pack<BoundArgs...>::type bound_indexes;
typedef sprout::tuples::tuple<BoundArgs...> bounds_type;
private:
template<typename Res>
struct enable_if_void
@ -317,7 +506,7 @@ namespace sprout {
typename disable_if_void<Res>::type = 0
)
{
return f_(sprout::detail::mu<BoundArgs>()(sprout::tuples::get<Indexes>(bound_args_), args)...);
return f_(sprout::detail::mu<BoundArgs>()(sprout::detail::get_bound<Indexes>(bound_args_), args)...);
}
template<typename Res, typename... Args, sprout::index_t... Indexes>
Result call(
@ -326,7 +515,7 @@ namespace sprout {
typename enable_if_void<Res>::type = 0
)
{
f_(sprout::detail::mu<BoundArgs>()(sprout::tuples::get<Indexes>(bound_args_), args)...);
f_(sprout::detail::mu<BoundArgs>()(sprout::detail::get_bound<Indexes>(bound_args_), args)...);
}
template<typename Res, typename... Args, sprout::index_t... Indexes>
SPROUT_CONSTEXPR Result call(
@ -335,7 +524,7 @@ namespace sprout {
typename disable_if_void<Res>::type = 0
) const
{
return f_(sprout::detail::mu<BoundArgs>()(sprout::tuples::get<Indexes>(bound_args_), args)...);
return f_(sprout::detail::mu<BoundArgs>()(sprout::detail::get_bound<Indexes>(bound_args_), args)...);
}
template<typename Res, typename... Args, sprout::index_t... Indexes>
Result call(
@ -344,7 +533,7 @@ namespace sprout {
typename enable_if_void<Res>::type = 0
) const
{
f_(sprout::detail::mu<BoundArgs>()(sprout::tuples::get<Indexes>(bound_args_), args)...);
f_(sprout::detail::mu<BoundArgs>()(sprout::detail::get_bound<Indexes>(bound_args_), args)...);
}
template<typename Res, typename... Args, sprout::index_t... Indexes>
Result call(
@ -353,7 +542,7 @@ namespace sprout {
typename disable_if_void<Res>::type = 0
) volatile
{
return f_(sprout::detail::mu<BoundArgs>()(sprout::detail::volget<Indexes>(bound_args_), args)...);
return f_(sprout::detail::mu<BoundArgs>()(sprout::detail::get_bound<Indexes>(bound_args_), args)...);
}
template<typename Res, typename... Args, sprout::index_t... Indexes>
Result call(
@ -362,7 +551,7 @@ namespace sprout {
typename enable_if_void<Res>::type = 0
) volatile
{
f_(sprout::detail::mu<BoundArgs>()(sprout::detail::volget<Indexes>(bound_args_), args)...);
f_(sprout::detail::mu<BoundArgs, Indexes>()(sprout::detail::get_bound<Indexes>(bound_args_), args)...);
}
template<typename Res, typename... Args, sprout::index_t... Indexes>
SPROUT_CONSTEXPR Result call(
@ -371,7 +560,7 @@ namespace sprout {
typename disable_if_void<Res>::type = 0
) const volatile
{
return f_(sprout::detail::mu<BoundArgs>()(sprout::detail::volget<Indexes>(bound_args_), args)...);
return f_(sprout::detail::mu<BoundArgs>()(sprout::detail::get_bound<Indexes>(bound_args_), args)...);
}
template<typename Res, typename... Args, sprout::index_t... Indexes>
Result call(
@ -380,7 +569,7 @@ namespace sprout {
typename enable_if_void<Res>::type = 0
) const volatile
{
f_(sprout::detail::mu<BoundArgs>()(sprout::detail::volget<Indexes>(bound_args_), args)...);
f_(sprout::detail::mu<BoundArgs>()(sprout::detail::get_bound<Indexes>(bound_args_), args)...);
}
public:
typedef Result result_type;
@ -394,28 +583,28 @@ namespace sprout {
result_type operator()(Args&&... args) {
return call<Result>(
sprout::tuples::forward_as_tuple(sprout::forward<Args>(args)...),
bound_indexes()
sprout::detail::bound_indexes<bounds_type, Args...>::make()
);
}
template<typename... Args>
SPROUT_CONSTEXPR result_type operator()(Args&&... args) const {
return call<Result>(
sprout::tuples::forward_as_tuple(sprout::forward<Args>(args)...),
bound_indexes()
sprout::detail::bound_indexes<bounds_type, Args...>::make()
);
}
template<typename... Args>
result_type operator()(Args&&... args) volatile {
return call<Result>(
sprout::tuples::forward_as_tuple(sprout::forward<Args>(args)...),
bound_indexes()
sprout::detail::bound_indexes<bounds_type, Args...>::make()
);
}
template<typename... Args>
SPROUT_CONSTEXPR result_type operator()(Args&&... args) const volatile {
return call<Result>(
sprout::tuples::forward_as_tuple(sprout::forward<Args>(args)...),
bound_indexes()
sprout::detail::bound_indexes<bounds_type, Args...>::make()
);
}
};
@ -434,7 +623,12 @@ namespace sprout {
namespace detail {
template<sprout::index_t Index, typename BoundArg, typename = void>
struct complete_placeholder {
struct complete_placeholder;
template<sprout::index_t Index, typename BoundArg>
struct complete_placeholder<
Index, BoundArg,
typename std::enable_if<!(sprout::is_placeholder<BoundArg>::value == -1)>::type
> {
public:
typedef BoundArg type;
};
@ -477,7 +671,6 @@ namespace sprout {
typedef sprout::detail::maybe_wrap_member_pointer<typename std::decay<Func>::type> maybe_type;
typedef typename maybe_type::type func_type;
typedef typename sprout::detail::binder_complete_placeholders<func_type, typename std::decay<BoundArgs>::type...>::type type;
// typedef sprout::binder<func_type (typename std::decay<BoundArgs>::type...)> type;
};
template<typename Result, typename Func, typename... BoundArgs>
struct res_bind_helper {
@ -485,7 +678,6 @@ namespace sprout {
typedef sprout::detail::maybe_wrap_member_pointer<typename std::decay<Func>::type> maybe_type;
typedef typename maybe_type::type functor_type;
typedef typename sprout::detail::res_binder_complete_placeholders<Result, functor_type, typename std::decay<BoundArgs>::type...>::type type;
// typedef sprout::res_binder<Result, functor_type (typename std::decay<BoundArgs>::type...)> type;
};
} // namespace detail

82
sprout/functional/bind/placeholder.hpp
View file

@ -9,9 +9,13 @@ namespace sprout {
// placeholder
//
template<int N>
struct placeholder {};
struct placeholder
// : public std::integral_constant<int, N>
{};
template<>
struct placeholder<-1> {
struct placeholder<-1>
// : public std::integral_constant<int, -1>
{
public:
template<int N2>
SPROUT_CONSTEXPR operator sprout::placeholder<N2>() const {
@ -53,6 +57,38 @@ namespace sprout {
SPROUT_STATIC_CONSTEXPR sprout::placeholder<30> _30 = {};
SPROUT_STATIC_CONSTEXPR sprout::placeholder<-1> _ = {};
SPROUT_STATIC_CONSTEXPR sprout::placeholder<-256> _va = {};
SPROUT_STATIC_CONSTEXPR sprout::placeholder<-256 - 1> _1tail = {};
SPROUT_STATIC_CONSTEXPR sprout::placeholder<-256 - 2> _2tail = {};
SPROUT_STATIC_CONSTEXPR sprout::placeholder<-256 - 3> _3tail = {};
SPROUT_STATIC_CONSTEXPR sprout::placeholder<-256 - 4> _4tail = {};
SPROUT_STATIC_CONSTEXPR sprout::placeholder<-256 - 5> _5tail = {};
SPROUT_STATIC_CONSTEXPR sprout::placeholder<-256 - 6> _6tail = {};
SPROUT_STATIC_CONSTEXPR sprout::placeholder<-256 - 7> _7tail = {};
SPROUT_STATIC_CONSTEXPR sprout::placeholder<-256 - 8> _8tail = {};
SPROUT_STATIC_CONSTEXPR sprout::placeholder<-256 - 9> _9tail = {};
SPROUT_STATIC_CONSTEXPR sprout::placeholder<-256 - 10> _10tail = {};
SPROUT_STATIC_CONSTEXPR sprout::placeholder<-256 - 11> _11tail = {};
SPROUT_STATIC_CONSTEXPR sprout::placeholder<-256 - 12> _12tail = {};
SPROUT_STATIC_CONSTEXPR sprout::placeholder<-256 - 13> _13tail = {};
SPROUT_STATIC_CONSTEXPR sprout::placeholder<-256 - 14> _14tail = {};
SPROUT_STATIC_CONSTEXPR sprout::placeholder<-256 - 15> _15tail = {};
SPROUT_STATIC_CONSTEXPR sprout::placeholder<-256 - 16> _16tail = {};
SPROUT_STATIC_CONSTEXPR sprout::placeholder<-256 - 17> _17tail = {};
SPROUT_STATIC_CONSTEXPR sprout::placeholder<-256 - 18> _18tail = {};
SPROUT_STATIC_CONSTEXPR sprout::placeholder<-256 - 19> _19tail = {};
SPROUT_STATIC_CONSTEXPR sprout::placeholder<-256 - 20> _20tail = {};
SPROUT_STATIC_CONSTEXPR sprout::placeholder<-256 - 21> _21tail = {};
SPROUT_STATIC_CONSTEXPR sprout::placeholder<-256 - 22> _22tail = {};
SPROUT_STATIC_CONSTEXPR sprout::placeholder<-256 - 23> _23tail = {};
SPROUT_STATIC_CONSTEXPR sprout::placeholder<-256 - 24> _24tail = {};
SPROUT_STATIC_CONSTEXPR sprout::placeholder<-256 - 25> _25tail = {};
SPROUT_STATIC_CONSTEXPR sprout::placeholder<-256 - 26> _26tail = {};
SPROUT_STATIC_CONSTEXPR sprout::placeholder<-256 - 27> _27tail = {};
SPROUT_STATIC_CONSTEXPR sprout::placeholder<-256 - 28> _28tail = {};
SPROUT_STATIC_CONSTEXPR sprout::placeholder<-256 - 29> _29tail = {};
SPROUT_STATIC_CONSTEXPR sprout::placeholder<-256 - 30> _30tail = {};
} // anonymous-namespace
} // namespace placeholders
using sprout::placeholders::_1;
@ -76,7 +112,7 @@ namespace sprout {
using sprout::placeholders::_19;
using sprout::placeholders::_20;
using sprout::placeholders::_21;
using sprout::placeholders::_2;
using sprout::placeholders::_22;
using sprout::placeholders::_23;
using sprout::placeholders::_24;
using sprout::placeholders::_25;
@ -88,6 +124,38 @@ namespace sprout {
using sprout::placeholders::_;
using sprout::placeholders::_va;
using sprout::placeholders::_1tail;
using sprout::placeholders::_2tail;
using sprout::placeholders::_3tail;
using sprout::placeholders::_4tail;
using sprout::placeholders::_5tail;
using sprout::placeholders::_6tail;
using sprout::placeholders::_7tail;
using sprout::placeholders::_8tail;
using sprout::placeholders::_9tail;
using sprout::placeholders::_10tail;
using sprout::placeholders::_11tail;
using sprout::placeholders::_12tail;
using sprout::placeholders::_13tail;
using sprout::placeholders::_14tail;
using sprout::placeholders::_15tail;
using sprout::placeholders::_16tail;
using sprout::placeholders::_17tail;
using sprout::placeholders::_18tail;
using sprout::placeholders::_19tail;
using sprout::placeholders::_20tail;
using sprout::placeholders::_21tail;
using sprout::placeholders::_22tail;
using sprout::placeholders::_23tail;
using sprout::placeholders::_24tail;
using sprout::placeholders::_25tail;
using sprout::placeholders::_26tail;
using sprout::placeholders::_27tail;
using sprout::placeholders::_28tail;
using sprout::placeholders::_29tail;
using sprout::placeholders::_30tail;
//
// is_placeholder
//
@ -95,6 +163,10 @@ namespace sprout {
struct is_placeholder
: public std::integral_constant<int, 0>
{};
template<int N>
struct is_placeholder<sprout::placeholder<N> >
: public std::integral_constant<int, N>
{};
template<typename T>
struct is_placeholder<T const>
: public sprout::is_placeholder<T>
@ -107,10 +179,6 @@ namespace sprout {
struct is_placeholder<T const volatile>
: public sprout::is_placeholder<T>
{};
template<int N>
struct is_placeholder<sprout::placeholder<N> >
: public std::integral_constant<int, N>
{};
} // namespace sprout
#endif // #ifndef SPROUT_FUNCTIONAL_BIND_PLACEHOLDER_HPP