47 lines
1.3 KiB
C++
47 lines
1.3 KiB
C++
|
/*!
|
||
|
|
@file
|
||
|
|
Forward declares `boost::hana::members`.
|
||
|
|
|
||
|
|
@copyright Louis Dionne 2013-2016
|
||
|
|
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_FWD_MEMBERS_HPP
|
||
|
|
#define BOOST_HANA_FWD_MEMBERS_HPP
|
||
|
|
|
||
|
|
#include <boost/hana/config.hpp>
|
||
|
|
#include <boost/hana/core/when.hpp>
|
||
|
|
|
||
|
|
|
||
|
|
BOOST_HANA_NAMESPACE_BEGIN
|
||
|
|
//! Returns a `Sequence` containing the members of a `Struct`.
|
||
|
|
//! @ingroup group-Struct
|
||
|
|
//!
|
||
|
|
//! Given a `Struct` object, `members` returns a `Sequence` containing
|
||
|
|
//! all the members of the `Struct`, in the same order as their respective
|
||
|
|
//! accessor appears in the `accessors` sequence.
|
||
|
|
//!
|
||
|
|
//!
|
||
|
|
//! Example
|
||
|
|
//! -------
|
||
|
|
//! @include example/members.cpp
|
||
|
|
#ifdef BOOST_HANA_DOXYGEN_INVOKED
|
||
|
|
constexpr auto members = [](auto&& object) {
|
||
|
|
return tag-dispatched;
|
||
|
|
};
|
||
|
|
#else
|
||
|
|
template <typename S, typename = void>
|
||
|
|
struct members_impl : members_impl<S, when<true>> { };
|
||
|
|
|
||
|
|
struct members_t {
|
||
|
|
template <typename Object>
|
||
|
|
constexpr auto operator()(Object&& object) const;
|
||
|
|
};
|
||
|
|
|
||
|
|
constexpr members_t members{};
|
||
|
|
#endif
|
||
|
|
BOOST_HANA_NAMESPACE_END
|
||
|
|
|
||
|
|
#endif // !BOOST_HANA_FWD_MEMBERS_HPP
|