41 lines
1.3 KiB
C++
41 lines
1.3 KiB
C++
/*!
|
|
@file
|
|
Defines operators for Searchables.
|
|
|
|
@copyright Louis Dionne 2013-2017
|
|
Distributed under the Boost Software License, Version 1.0.
|
|
(See accompanying file LICENSE.md or copy at http://boost.org/LICENSE_1_0.txt)
|
|
*/
|
|
|
|
#ifndef BOOST_HANA_DETAIL_OPERATORS_SEARCHABLE_HPP
|
|
#define BOOST_HANA_DETAIL_OPERATORS_SEARCHABLE_HPP
|
|
|
|
#include <boost/hana/config.hpp>
|
|
#include <boost/hana/fwd/at_key.hpp>
|
|
|
|
|
|
namespace boost { namespace hana { namespace detail {
|
|
template <typename Derived>
|
|
struct searchable_operators {
|
|
template <typename Key>
|
|
constexpr decltype(auto) operator[](Key&& key) & {
|
|
return hana::at_key(static_cast<Derived&>(*this),
|
|
static_cast<Key&&>(key));
|
|
}
|
|
|
|
template <typename Key>
|
|
constexpr decltype(auto) operator[](Key&& key) && {
|
|
return hana::at_key(static_cast<Derived&&>(*this),
|
|
static_cast<Key&&>(key));
|
|
}
|
|
|
|
template <typename Key>
|
|
constexpr decltype(auto) operator[](Key&& key) const& {
|
|
return hana::at_key(static_cast<Derived const&>(*this),
|
|
static_cast<Key&&>(key));
|
|
}
|
|
};
|
|
} }} // end namespace boost::hana
|
|
|
|
#endif // !BOOST_HANA_DETAIL_OPERATORS_SEARCHABLE_HPP
|