ceph/src/boost/libs/vmd/test/test_is_empty.cxx

   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/vmd/is_empty.hpp>
   8 #include <boost/preprocessor/facilities/empty.hpp>
   9 #include <boost/detail/lightweight_test.hpp>
  10
  11 int main()
  12   {
  13
  14 #if BOOST_PP_VARIADICS
  15
  16   #define DATA
  17   #define OBJECT OBJECT2
  18   #define OBJECT2
  19   #define FUNC(x) FUNC2(x)
  20   #define FUNC2(x)
  21
  22   BOOST_TEST(BOOST_VMD_IS_EMPTY(BOOST_PP_EMPTY()));
  23   BOOST_TEST(BOOST_VMD_IS_EMPTY(DATA BOOST_PP_EMPTY()));
  24   BOOST_TEST(!BOOST_VMD_IS_EMPTY(x BOOST_PP_EMPTY()));
  25   BOOST_TEST(BOOST_VMD_IS_EMPTY(OBJECT BOOST_PP_EMPTY()));
  26   BOOST_TEST(BOOST_VMD_IS_EMPTY(FUNC(z) BOOST_PP_EMPTY()));
  27
  28   #define FUNC_GEN() ()
  29   #define FUNC_GEN2(x) ()
  30   #define FUNC_GEN3() anything
  31   #define FUNC_GEN4(x) anything
  32
  33 #if BOOST_VMD_MSVC
  34
  35   #define FUNC_GEN5(x,y) ()
  36   #define FUNC_GEN6(x,y) anything
  37
  38   /* This shows that VC++ does not work correctly in these cases. */
  39
  40   BOOST_TEST(BOOST_VMD_IS_EMPTY(FUNC_GEN));  /* This produces the wrong result */
  41   BOOST_TEST(BOOST_VMD_IS_EMPTY(FUNC_GEN2)); /* This produces the wrong result */
  42
  43   BOOST_TEST(BOOST_VMD_IS_EMPTY(FUNC_GEN5));  /* This should produce a compiler error but does not and produces the incorrect result */
  44   BOOST_TEST(!BOOST_VMD_IS_EMPTY(FUNC_GEN6)); /* This should produce a compiler error but does not */
  45
  46 #else
  47
  48   #define FUNC_GEN5() (&)
  49   #define FUNC_GEN6(x) (y)
  50   #define FUNC_GEN7() (y,z)
  51
  52   BOOST_TEST(!BOOST_VMD_IS_EMPTY(FUNC_GEN));
  53   BOOST_TEST(!BOOST_VMD_IS_EMPTY(FUNC_GEN2));
  54
  55   BOOST_TEST(!BOOST_VMD_IS_EMPTY(FUNC_GEN5));
  56   BOOST_TEST(!BOOST_VMD_IS_EMPTY(FUNC_GEN6));
  57   BOOST_TEST(!BOOST_VMD_IS_EMPTY(FUNC_GEN7));
  58
  59 #endif /* BOOST_VMD_MSVC */
  60
  61   BOOST_TEST(!BOOST_VMD_IS_EMPTY(FUNC_GEN3));
  62   BOOST_TEST(!BOOST_VMD_IS_EMPTY(FUNC_GEN4));
  63
  64 #else
  65
  66 BOOST_ERROR("No variadic macro support");
  67
  68 #endif /* BOOST_PP_VARIADICS */
  69
  70   return boost::report_errors();
  71
  72   }