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fic cbind

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bolero-MURAKAMI 2013-07-15 22:50:40 +09:00
parent 0d51ecff37
commit d1d273a84a
1 changed files with 45 additions and 8 deletions
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53
sprout/functional/bind/bind.hpp
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@ -694,7 +694,7 @@ namespace sprout {
}
public:
template<typename... Args>
explicit res_binder_impl(Functor const& f, Args&&... args)
explicit SPROUT_CONSTEXPR res_binder_impl(Functor const& f, Args&&... args)
: f_(f)
, bound_args_(sprout::forward<Args>(args)...)
{}
@ -893,12 +893,41 @@ namespace sprout {
>
>::type
{};
template<std::size_t I, std::size_t N, typename Bounds, typename Result, typename Func, typename... As>
struct res_binder_complete_placeholders_impl<
I, N, Bounds, sprout::res_cbinder<Result, Func (As...)>,
typename std::enable_if<(I < sprout::tuples::tuple_size<Bounds>::value)>::type
>
: public std::conditional<
sprout::is_positional_placeholder<typename sprout::tuples::tuple_element<I, Bounds>::type>::value,
sprout::detail::res_binder_complete_placeholders_impl<
I + 1, N + 1, Bounds,
sprout::res_cbinder<Result, Func (As..., sprout::placeholder<N + 1>)>
>,
sprout::detail::res_binder_complete_placeholders_impl<
I + 1, N, Bounds,
sprout::res_cbinder<Result, Func (As..., typename sprout::tuples::tuple_element<I, Bounds>::type)>
>
>::type
{};
template<bool Const, typename Result, typename Func, typename... BoundArgs>
struct res_binder_complete_placeholders;
template<typename Result, typename Func, typename... BoundArgs>
struct res_binder_complete_placeholders
struct res_binder_complete_placeholders<
false, Result, Func, BoundArgs...
>
: public sprout::detail::res_binder_complete_placeholders_impl<
0, 0, sprout::types::type_tuple<BoundArgs...>, sprout::res_binder<Result, Func ()>
>
{};
template<typename Result, typename Func, typename... BoundArgs>
struct res_binder_complete_placeholders<
true, Result, Func, BoundArgs...
>
: public sprout::detail::res_binder_complete_placeholders_impl<
0, 0, sprout::types::type_tuple<BoundArgs...>, sprout::res_cbinder<Result, Func ()>
>
{};
template<bool Const, typename Func, typename... BoundArgs>
struct bind_helper {
@ -907,12 +936,12 @@ namespace sprout {
typedef typename maybe_type::type func_type;
typedef typename sprout::detail::binder_complete_placeholders<Const, func_type, typename std::decay<BoundArgs>::type...>::type type;
};
template<typename Result, typename Func, typename... BoundArgs>
template<bool Const, typename Result, typename Func, typename... BoundArgs>
struct res_bind_helper {
public:
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 typename sprout::detail::res_binder_complete_placeholders<Const, Result, functor_type, typename std::decay<BoundArgs>::type...>::type type;
};
} // namespace detail
@ -937,7 +966,12 @@ namespace sprout {
template<typename R, typename F, typename... BoundArgs>
struct res_bind_result {
public:
typedef typename sprout::detail::res_bind_helper<R, F, BoundArgs...>::type type;
typedef typename sprout::detail::res_bind_helper<false, R, F, BoundArgs...>::type type;
};
template<typename R, typename F, typename... BoundArgs>
struct res_cbind_result {
public:
typedef typename sprout::detail::res_bind_helper<true, R, F, BoundArgs...>::type type;
};
//
@ -954,7 +988,7 @@ namespace sprout {
template<typename R, typename F, typename... BoundArgs>
inline SPROUT_CONSTEXPR typename sprout::res_bind_result<R, F, BoundArgs...>::type
bind(F&& f, BoundArgs&&... args) {
typedef sprout::detail::res_bind_helper<R, F, BoundArgs...> helper_type;
typedef sprout::detail::res_bind_helper<false, R, F, BoundArgs...> helper_type;
typedef typename helper_type::maybe_type maybe_type;
typedef typename helper_type::type result_type;
return result_type(maybe_type::do_wrap(sprout::forward<F>(f)), sprout::forward<BoundArgs>(args)...);
@ -972,9 +1006,12 @@ namespace sprout {
return result_type(maybe_type::do_wrap(sprout::forward<F>(f)), sprout::forward<BoundArgs>(args)...);
}
template<typename R, typename F, typename... BoundArgs>
inline SPROUT_CONSTEXPR typename sprout::detail::res_bind_helper<R, F, BoundArgs...>::type const
inline SPROUT_CONSTEXPR typename sprout::res_cbind_result<R, F, BoundArgs...>::type
cbind(F&& f, BoundArgs&&... args) {
return sprout::bind<R>(sprout::forward<F>(f), sprout::forward<BoundArgs>(args)...);
typedef sprout::detail::res_bind_helper<true, R, F, BoundArgs...> helper_type;
typedef typename helper_type::maybe_type maybe_type;
typedef typename helper_type::type result_type;
return result_type(maybe_type::do_wrap(sprout::forward<F>(f)), sprout::forward<BoundArgs>(args)...);
}
} // namespace sprout