/*! @file Documents the `BOOST_HANA_ADAPT_ADT` macro. @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_FWD_ADAPT_ADT_HPP #define BOOST_HANA_FWD_ADAPT_ADT_HPP #include BOOST_HANA_NAMESPACE_BEGIN // Note: // The weird definition as a variable seems to exploit a glitch in Doxygen // which makes the macro appear in the related objects of Struct (as we // want it to). //! Defines a model of `Struct` with the given accessors. //! @ingroup group-Struct //! //! Using this macro at _global scope_ will define a model of the `Struct` //! concept for the given type. This can be used to easily adapt existing //! user-defined types in a ad-hoc manner. Unlike `BOOST_HANA_ADAPT_STRUCT`, //! this macro requires specifying the way to retrieve each member by //! providing a function that does the extraction. //! //! @note //! This macro only works if the tag of the user-defined type `T` is `T` //! itself. This is the case unless you specifically asked for something //! different; see `tag_of`'s documentation. //! //! //! Example //! ------- //! @include example/adapt_adt.cpp #ifdef BOOST_HANA_DOXYGEN_INVOKED auto BOOST_HANA_ADAPT_ADT(...) = ; #define BOOST_HANA_ADAPT_ADT(Name, ...) see documentation #else // defined in #endif BOOST_HANA_NAMESPACE_END #endif // !BOOST_HANA_FWD_ADAPT_ADT_HPP