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1 | |
2 | // (C) Copyright Edward Diener 2011-2015 | |
3 | // Use, modification and distribution are subject to the Boost Software License, | |
4 | // Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at | |
5 | // http://www.boost.org/LICENSE_1_0.txt). | |
6 | ||
7 | #include <boost/detail/lightweight_test.hpp> | |
8 | #include <boost/preprocessor/cat.hpp> | |
9 | #include <boost/preprocessor/control/if.hpp> | |
10 | #include <boost/preprocessor/tuple/elem.hpp> | |
11 | ||
12 | int main() | |
13 | { | |
14 | ||
15 | #if BOOST_PP_VARIADICS | |
16 | ||
17 | #define TN_GEN_ONE(p) (1) | |
18 | #define TN_GEN_ZERO(p) (0) | |
19 | ||
20 | #define TN_TEST_ONE_MORE(parameter,ens) \ | |
21 | BOOST_PP_IF \ | |
22 | ( \ | |
23 | BOOST_PP_CAT(BOOST_PP_TUPLE_ELEM(1,0,ens),0), \ | |
24 | TN_GEN_ONE, \ | |
25 | TN_GEN_ZERO \ | |
26 | ) \ | |
27 | (parameter) \ | |
28 | /**/ | |
29 | ||
30 | #define TN_TEST_ONE(parameter,ens) \ | |
31 | BOOST_PP_TUPLE_ELEM \ | |
32 | ( \ | |
33 | 1, \ | |
34 | 0, \ | |
35 | TN_TEST_ONE_MORE(parameter,ens) \ | |
36 | ) \ | |
37 | /**/ | |
38 | ||
39 | BOOST_TEST_EQ(TN_TEST_ONE(A,(1)),1); | |
40 | BOOST_TEST_EQ(TN_TEST_ONE(A,()),0); | |
41 | ||
42 | #else | |
43 | ||
44 | BOOST_ERROR("No variadic macro support"); | |
45 | ||
46 | #endif /* BOOST_PP_VARIADICS */ | |
47 | ||
48 | return boost::report_errors(); | |
49 | ||
50 | } |