38 lines
1.2 KiB
C++
38 lines
1.2 KiB
C++
/*=============================================================================
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Boost.Wave: A Standard compliant C++ preprocessor library
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http://www.boost.org/
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Copyright (c) 2001-2012 Hartmut Kaiser. Distributed under the Boost
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Software License, Version 1.0. (See accompanying file
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LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
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=============================================================================*/
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// Test partial macro evaluation using varidic macros
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//O --variadics
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#define cat(...) cat_i(__VA_ARGS__,,,,,)
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#define cat_i(a, b, c, d, e, ...) \
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a ## b ## c ## d ## e \
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/**/
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#define primitive_cat(a, b) a ## b
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#define partial_cat(x, y) cat(partial_cat_, x, y)
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#define partial_cat_00(a, b) partial_cat_f(, ## a, b ## ,)
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#define partial_cat_01(a, b) partial_cat_f(, ## a, b ,)
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#define partial_cat_10(a, b) partial_cat_f(, a, b ## ,)
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#define partial_cat_11(a, b) partial_cat_f(, a, b ,)
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#define partial_cat_f(a, b, c, d) b ## c
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#define X Token1
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#define Y Token2
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//R #line 34 "t_1_032.cpp"
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partial_cat(0, 0)(X, Y) //R XY
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partial_cat(0, 1)(X, Y) //R XToken2
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partial_cat(1, 0)(X, Y) //R Token1Y
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partial_cat(1, 1)(X, Y) //R Token1Token2
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