| #ifndef BOOST_CONFIG_HELPER_MACROS_HPP_INCLUDED |
| #define BOOST_CONFIG_HELPER_MACROS_HPP_INCLUDED |
| |
| // Copyright 2001 John Maddock. |
| // Copyright 2017 Peter Dimov. |
| // |
| // 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 |
| // |
| // BOOST_STRINGIZE(X) |
| // BOOST_JOIN(X, Y) |
| // |
| // Note that this header is C compatible. |
| |
| // |
| // Helper macro BOOST_STRINGIZE: |
| // Converts the parameter X to a string after macro replacement |
| // on X has been performed. |
| // |
| #define BOOST_STRINGIZE(X) BOOST_DO_STRINGIZE(X) |
| #define BOOST_DO_STRINGIZE(X) #X |
| |
| // |
| // Helper macro BOOST_JOIN: |
| // The following piece of macro magic joins the two |
| // arguments together, even when one of the arguments is |
| // itself a macro (see 16.3.1 in C++ standard). The key |
| // is that macro expansion of macro arguments does not |
| // occur in BOOST_DO_JOIN2 but does in BOOST_DO_JOIN. |
| // |
| #define BOOST_JOIN(X, Y) BOOST_DO_JOIN(X, Y) |
| #define BOOST_DO_JOIN(X, Y) BOOST_DO_JOIN2(X,Y) |
| #define BOOST_DO_JOIN2(X, Y) X##Y |
| |
| #endif // BOOST_CONFIG_HELPER_MACROS_HPP_INCLUDED |
