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38 lines
1.1 KiB
C++
38 lines
1.1 KiB
C++
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#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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