libs/preprocessor/test/tuple_elem_bug_test.cxx

   1 # /* **************************************************************************
   2 #  *                                                                          *
   3 #  *     (C) Copyright Edward Diener 2014.
   4 #  *     Distributed under the Boost Software License, Version 1.0. (See
   5 #  *     accompanying file LICENSE_1_0.txt or copy at
   6 #  *     http://www.boost.org/LICENSE_1_0.txt)
   7 #  *                                                                          *
   8 #  ************************************************************************** */
   9 #
  10 # /* See http://www.boost.org for most recent version. */
  11 #
  12 # include <boost/preprocessor/cat.hpp>
  13 # include <boost/preprocessor/control/if.hpp>
  14 # include <boost/preprocessor/tuple.hpp>
  15 # include <libs/preprocessor/test/test.h>
  16
  17 #define TN_GEN_ONE(p) (1)
  18 #define TN_GEN_ZERO(p) (0)
  19 #define TN_TEST_ONE_MORE(parameter,ens) \
  20         BOOST_PP_IF \
  21             ( \
  22             BOOST_PP_CAT(BOOST_PP_TUPLE_ELEM(1,0,ens),0), \
  23             TN_GEN_ONE, \
  24             TN_GEN_ZERO \
  25             ) \
  26         (parameter) \
  27 /**/
  28 #define TN_TEST_ONE(parameter,ens) \
  29     BOOST_PP_TUPLE_ELEM \
  30         ( \
  31         1, \
  32         0, \
  33         TN_TEST_ONE_MORE(parameter,ens) \
  34         ) \
  35 /**/
  36
  37 BEGIN TN_TEST_ONE(A,(1)) == 1 END
  38 BEGIN TN_TEST_ONE(A,()) == 0 END