| Brian Silverman | 9d8fa39 | 2018-08-04 17:09:24 -0700 | [diff] [blame^] | 1 | #ifndef BOOST_CONFIG_HELPER_MACROS_HPP_INCLUDED |
| 2 | #define BOOST_CONFIG_HELPER_MACROS_HPP_INCLUDED |
| 3 | |
| 4 | // Copyright 2001 John Maddock. |
| 5 | // Copyright 2017 Peter Dimov. |
| 6 | // |
| 7 | // Distributed under the Boost Software License, Version 1.0. |
| 8 | // |
| 9 | // See accompanying file LICENSE_1_0.txt or copy at |
| 10 | // http://www.boost.org/LICENSE_1_0.txt |
| 11 | // |
| 12 | // BOOST_STRINGIZE(X) |
| 13 | // BOOST_JOIN(X, Y) |
| 14 | // |
| 15 | // Note that this header is C compatible. |
| 16 | |
| 17 | // |
| 18 | // Helper macro BOOST_STRINGIZE: |
| 19 | // Converts the parameter X to a string after macro replacement |
| 20 | // on X has been performed. |
| 21 | // |
| 22 | #define BOOST_STRINGIZE(X) BOOST_DO_STRINGIZE(X) |
| 23 | #define BOOST_DO_STRINGIZE(X) #X |
| 24 | |
| 25 | // |
| 26 | // Helper macro BOOST_JOIN: |
| 27 | // The following piece of macro magic joins the two |
| 28 | // arguments together, even when one of the arguments is |
| 29 | // itself a macro (see 16.3.1 in C++ standard). The key |
| 30 | // is that macro expansion of macro arguments does not |
| 31 | // occur in BOOST_DO_JOIN2 but does in BOOST_DO_JOIN. |
| 32 | // |
| 33 | #define BOOST_JOIN(X, Y) BOOST_DO_JOIN(X, Y) |
| 34 | #define BOOST_DO_JOIN(X, Y) BOOST_DO_JOIN2(X,Y) |
| 35 | #define BOOST_DO_JOIN2(X, Y) X##Y |
| 36 | |
| 37 | #endif // BOOST_CONFIG_HELPER_MACROS_HPP_INCLUDED |