| // Copyright Daniel Wallin 2006. |
| // Copyright Cromwell D. Enage 2017. |
| // 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 BOOST_PARAMETER_AUX_PREPROCESSOR_QUALIFIER_HPP |
| #define BOOST_PARAMETER_AUX_PREPROCESSOR_QUALIFIER_HPP |
| |
| #define BOOST_PARAMETER_QUALIFIER_EAT_in(x) |
| #define BOOST_PARAMETER_QUALIFIER_EAT_out(x) |
| #define BOOST_PARAMETER_QUALIFIER_EAT_in_out(x) |
| #define BOOST_PARAMETER_QUALIFIER_EAT_consume(x) |
| #define BOOST_PARAMETER_QUALIFIER_EAT_move_from(x) |
| #define BOOST_PARAMETER_QUALIFIER_EAT_forward(x) |
| |
| #define BOOST_PARAMETER_GET_QUALIFIER_in(x) in_reference |
| #define BOOST_PARAMETER_GET_QUALIFIER_out(x) out_reference |
| #define BOOST_PARAMETER_GET_QUALIFIER_in_out(x) in_out_reference |
| #define BOOST_PARAMETER_GET_QUALIFIER_consume(x) consume_reference |
| #define BOOST_PARAMETER_GET_QUALIFIER_move_from(x) move_from_reference |
| #define BOOST_PARAMETER_GET_QUALIFIER_forward(x) forward_reference |
| |
| #define BOOST_PARAMETER_STRIP_QUALIFIER_in(x) x |
| #define BOOST_PARAMETER_STRIP_QUALIFIER_out(x) x |
| #define BOOST_PARAMETER_STRIP_QUALIFIER_in_out(x) x |
| #define BOOST_PARAMETER_STRIP_QUALIFIER_consume(x) x |
| #define BOOST_PARAMETER_STRIP_QUALIFIER_move_from(x) x |
| #define BOOST_PARAMETER_STRIP_QUALIFIER_forward(x) x |
| |
| #include <boost/preprocessor/cat.hpp> |
| |
| #define BOOST_PARAMETER_GET_QUALIFIER_GET(x) \ |
| BOOST_PP_CAT(BOOST_PARAMETER_GET_QUALIFIER_, x) |
| /**/ |
| |
| #define BOOST_PARAMETER_GET_UNQUALIFIED(x) \ |
| BOOST_PP_CAT(BOOST_PARAMETER_STRIP_QUALIFIER_, x) |
| /**/ |
| |
| #include <boost/preprocessor/facilities/is_empty.hpp> |
| |
| // Expands to 1 if x is either "in(k)", "out(k)", "in_out(k)", "consume(k)", |
| // "move_from(k)", or "forward(k)"; expands to 0 otherwise. |
| #define BOOST_PARAMETER_IS_QUALIFIER(x) \ |
| BOOST_PP_IS_EMPTY(BOOST_PP_CAT(BOOST_PARAMETER_QUALIFIER_EAT_, x)) |
| /**/ |
| |
| #include <boost/preprocessor/control/iif.hpp> |
| |
| // Expands to the qualifier of x, |
| // where x is either a keyword qualifier or a keyword. |
| // |
| // k => forward_reference |
| // in(k) => in_reference |
| // out(k) => out_reference |
| // in_out(k) => in_out_reference |
| // forward(k) => forward_reference |
| // consume(k) => consume_reference |
| // move_from(k) => move_from_reference |
| #define BOOST_PARAMETER_GET_QUALIFIER(x) \ |
| BOOST_PP_IIF( \ |
| BOOST_PARAMETER_IS_QUALIFIER(x) \ |
| , BOOST_PARAMETER_GET_QUALIFIER_GET(x) \ |
| , forward_reference \ |
| ) |
| /**/ |
| |
| // Expands to the unqualified version of x, |
| // where x is either a keyword qualifier or a keyword. |
| // |
| // k => k |
| // in(k) => k |
| // out(k) => k |
| // in_out(k) => k |
| // forward(k) => k |
| // consume(k) => k |
| // move_from(k) => k |
| #define BOOST_PARAMETER_UNQUALIFIED(x) \ |
| BOOST_PP_IIF( \ |
| BOOST_PARAMETER_IS_QUALIFIER(x) \ |
| , BOOST_PARAMETER_GET_UNQUALIFIED(x) \ |
| , x \ |
| ) |
| /**/ |
| |
| #endif // include guard |
| |