| |
| #ifndef BOOST_MPL_IDENTITY_HPP_INCLUDED |
| #define BOOST_MPL_IDENTITY_HPP_INCLUDED |
| |
| // Copyright Aleksey Gurtovoy 2000-2004 |
| // |
| // 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) |
| // |
| // See http://www.boost.org/libs/mpl for documentation. |
| |
| // $Id$ |
| // $Date$ |
| // $Revision$ |
| |
| #include <boost/mpl/aux_/na_spec.hpp> |
| #include <boost/mpl/aux_/lambda_support.hpp> |
| |
| namespace boost { namespace mpl { |
| |
| template< |
| typename BOOST_MPL_AUX_NA_PARAM(T) |
| > |
| struct identity |
| { |
| typedef T type; |
| BOOST_MPL_AUX_LAMBDA_SUPPORT(1, identity, (T)) |
| }; |
| |
| template< |
| typename BOOST_MPL_AUX_NA_PARAM(T) |
| > |
| struct make_identity |
| { |
| typedef identity<T> type; |
| BOOST_MPL_AUX_LAMBDA_SUPPORT(1, make_identity, (T)) |
| }; |
| |
| BOOST_MPL_AUX_NA_SPEC_NO_ETI(1, identity) |
| BOOST_MPL_AUX_NA_SPEC_NO_ETI(1, make_identity) |
| |
| }} |
| |
| #endif // BOOST_MPL_IDENTITY_HPP_INCLUDED |
