ceph/src/boost/libs/parameter/test/normalized_argument_types.cpp

   1 // Copyright Daniel Wallin 2006. Use, modification and distribution is
   2 // subject to the Boost Software License, Version 1.0. (See accompanying
   3 // file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
   4
   5 #include <boost/parameter.hpp>
   6 #include <boost/mpl/assert.hpp>
   7 #include <boost/type_traits/is_same.hpp>
   8 #include <cassert>
   9
  10 struct count_instances
  11 {
  12     count_instances()
  13     {
  14         ++count;
  15     }
  16
  17     count_instances(count_instances const&)
  18     {
  19         ++count;
  20     }
  21
  22     template <class T>
  23     count_instances(T const&)
  24     {
  25         ++count;
  26     }
  27
  28     ~count_instances()
  29     {
  30         --count;
  31     }
  32
  33     static std::size_t count;
  34 };
  35
  36 std::size_t count_instances::count = 0;
  37
  38 BOOST_PARAMETER_NAME(x)
  39 BOOST_PARAMETER_NAME(y)
  40
  41 BOOST_PARAMETER_FUNCTION((int), f, tag,
  42     (required
  43        (x, (int))
  44        (y, (int))
  45     )
  46 )
  47 {
  48     BOOST_MPL_ASSERT((boost::is_same<x_type,int>));
  49     BOOST_MPL_ASSERT((boost::is_same<y_type,int>));
  50     return 0;
  51 }
  52
  53 BOOST_PARAMETER_FUNCTION((int), g, tag,
  54     (required
  55        (x, (count_instances))
  56     )
  57 )
  58 {
  59     BOOST_MPL_ASSERT((boost::is_same<x_type,count_instances>));
  60     assert(count_instances::count > 0);
  61     return 0;
  62 }
  63
  64 BOOST_PARAMETER_FUNCTION((int), h, tag,
  65     (required
  66        (x, (count_instances const&))
  67     )
  68 )
  69 {
  70     BOOST_MPL_ASSERT((boost::is_same<x_type,count_instances const>));
  71     assert(count_instances::count == 1);
  72     return 0;
  73 }
  74
  75 int main()
  76 {
  77     f(1, 2);
  78     f(1., 2.f);
  79     f(1U, 2L);
  80
  81     g(0);
  82
  83     h(0);
  84 }
  85