Sprout/sprout/tuple/fused.hpp
2014-12-14 12:59:51 +09:00

62 lines
1.7 KiB
C++

/*=============================================================================
Copyright (c) 2011-2014 Bolero MURAKAMI
https://github.com/bolero-MURAKAMI/Sprout
Distributed under 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)
=============================================================================*/
#ifndef SPROUT_TUPLE_FUSED_HPP
#define SPROUT_TUPLE_FUSED_HPP
#include <sprout/config.hpp>
#include <sprout/tuple/tuple/tuple.hpp>
#include <sprout/tuple/apply.hpp>
#include <sprout/utility/forward.hpp>
namespace sprout {
namespace tuples {
//
// fused
//
template<typename F>
class fused {
public:
typedef F functor_type;
public:
template<typename Tuple>
struct result
: public sprout::tuples::apply_result<functor_type const&, Tuple>
{};
private:
functor_type f_;
public:
SPROUT_CONSTEXPR fused() SPROUT_DEFAULTED_DEFAULT_CONSTRUCTOR_DECL
fused(fused const&) = default;
explicit SPROUT_CONSTEXPR fused(F f)
: f_(f)
{}
SPROUT_CONSTEXPR functor_type functor() const {
return f_;
}
template<typename Tuple>
SPROUT_CONSTEXPR typename result<Tuple>::type
operator()(Tuple&& t) const {
return sprout::tuples::apply(f_, SPROUT_FORWARD(Tuple, t));
}
};
//
// make_fused
//
template<typename F>
inline SPROUT_CONSTEXPR sprout::tuples::fused<F>
make_fused(F const& f) {
return sprout::tuples::fused<F>(f);
}
} // namespace tuples
using sprout::tuples::fused;
using sprout::tuples::make_fused;
} // namespace sprout
#endif // #ifndef SPROUT_TUPLE_FUSED_HPP