| 1 | #ifndef BOOST_CONFIG_HELPER_MACROS_HPP_INCLUDED |
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| 2 | #define BOOST_CONFIG_HELPER_MACROS_HPP_INCLUDED |
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| 3 | |
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| 4 | // Copyright 2001 John Maddock. |
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| 5 | // Copyright 2017 Peter Dimov. |
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| 6 | // |
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| 7 | // Distributed under the Boost Software License, Version 1.0. |
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| 8 | // |
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| 9 | // See accompanying file LICENSE_1_0.txt or copy at |
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| 10 | // http://www.boost.org/LICENSE_1_0.txt |
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| 11 | // |
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| 12 | // BOOST_STRINGIZE(X) |
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| 13 | // BOOST_JOIN(X, Y) |
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| 14 | // |
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| 15 | // Note that this header is C compatible. |
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| 16 | |
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| 17 | // |
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| 18 | // Helper macro BOOST_STRINGIZE: |
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| 19 | // Converts the parameter X to a string after macro replacement |
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| 20 | // on X has been performed. |
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| 21 | // |
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| 22 | #define BOOST_STRINGIZE(X) BOOST_DO_STRINGIZE(X) |
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| 23 | #define BOOST_DO_STRINGIZE(X) #X |
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| 24 | |
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| 25 | // |
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| 26 | // Helper macro BOOST_JOIN: |
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| 27 | // The following piece of macro magic joins the two |
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| 28 | // arguments together, even when one of the arguments is |
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| 29 | // itself a macro (see 16.3.1 in C++ standard). The key |
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| 30 | // is that macro expansion of macro arguments does not |
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| 31 | // occur in BOOST_DO_JOIN2 but does in BOOST_DO_JOIN. |
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| 32 | // |
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| 33 | #define BOOST_JOIN(X, Y) BOOST_DO_JOIN(X, Y) |
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| 34 | #define BOOST_DO_JOIN(X, Y) BOOST_DO_JOIN2(X,Y) |
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| 35 | #define BOOST_DO_JOIN2(X, Y) X##Y |
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| 36 | |
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| 37 | #endif // BOOST_CONFIG_HELPER_MACROS_HPP_INCLUDED |
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| 38 | |
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