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37 lines
1.1 KiB
37 lines
1.1 KiB
#ifndef BOOST_CONFIG_HELPER_MACROS_HPP_INCLUDED |
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#define BOOST_CONFIG_HELPER_MACROS_HPP_INCLUDED |
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// Copyright 2001 John Maddock. |
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// Copyright 2017 Peter Dimov. |
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// |
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// Distributed under the Boost Software License, Version 1.0. |
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// |
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// See accompanying file LICENSE_1_0.txt or copy at |
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// http://www.boost.org/LICENSE_1_0.txt |
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// |
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// BOOST_STRINGIZE(X) |
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// BOOST_JOIN(X, Y) |
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// |
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// Note that this header is C compatible. |
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// |
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// Helper macro BOOST_STRINGIZE: |
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// Converts the parameter X to a string after macro replacement |
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// on X has been performed. |
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// |
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#define BOOST_STRINGIZE(X) BOOST_DO_STRINGIZE(X) |
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#define BOOST_DO_STRINGIZE(X) #X |
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// |
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// Helper macro BOOST_JOIN: |
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// The following piece of macro magic joins the two |
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// arguments together, even when one of the arguments is |
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// itself a macro (see 16.3.1 in C++ standard). The key |
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// is that macro expansion of macro arguments does not |
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// occur in BOOST_DO_JOIN2 but does in BOOST_DO_JOIN. |
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// |
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#define BOOST_JOIN(X, Y) BOOST_DO_JOIN(X, Y) |
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#define BOOST_DO_JOIN(X, Y) BOOST_DO_JOIN2(X,Y) |
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#define BOOST_DO_JOIN2(X, Y) X##Y |
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#endif // BOOST_CONFIG_HELPER_MACROS_HPP_INCLUDED
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