ceph/src/boost/libs/fusion/test/functional/fused_function_object.cpp

   1 /*=============================================================================
   2     Copyright (c) 2006-2007 Tobias Schwinger
   3
   4     Use modification and distribution are subject to the Boost Software
   5     License, Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
   6     http://www.boost.org/LICENSE_1_0.txt).
   7 ==============================================================================*/
   8
   9 #include <boost/fusion/functional/adapter/fused_function_object.hpp>
  10 #include <boost/detail/lightweight_test.hpp>
  11
  12 #include <boost/noncopyable.hpp>
  13 #include <boost/mpl/empty_base.hpp>
  14
  15 #include <boost/fusion/container/generation/make_vector.hpp>
  16 #include <boost/fusion/container/vector.hpp>
  17
  18 namespace fusion = boost::fusion;
  19 using boost::noncopyable;
  20
  21 template <class Base = boost::mpl::empty_base>
  22 struct test_func
  23     : Base
  24 {
  25     template<typename T>
  26     struct result;
  27
  28     template<class Self, typename T0, typename T1>
  29     struct result< Self(T0, T1) >
  30     {
  31         typedef int type;
  32     };
  33
  34     template <typename T0, typename T1>
  35     int operator()(T0 const & x, T1 const & y) const
  36     {
  37         return 1+x-y;
  38     }
  39
  40     template <typename T0, typename T1>
  41     int operator()(T0 const & x, T1 const & y)
  42     {
  43         return 2+x-y;
  44     }
  45
  46     template <typename T0, typename T1>
  47     int operator()(T0 & x, T1 & y) const
  48     {
  49         return 3+x-y;
  50     }
  51
  52     template <typename T0, typename T1>
  53     int operator()(T0 & x, T1 & y)
  54     {
  55         return 4+x-y;
  56     }
  57 };
  58
  59 int main()
  60 {
  61     test_func<noncopyable> f;
  62     fusion::fused_function_object< test_func<> > fused_func;
  63     fusion::fused_function_object< test_func<noncopyable> & > fused_func_ref(f);
  64     fusion::fused_function_object< test_func<> const > fused_func_c;
  65     fusion::fused_function_object< test_func<> > const fused_func_c2;
  66     fusion::fused_function_object< test_func<noncopyable> const & > fused_func_c_ref(f);
  67
  68     fusion::vector<int,char> lv_vec(1,'\004');
  69     BOOST_TEST(fused_func(lv_vec) == 1);
  70     BOOST_TEST(fused_func_c(lv_vec) == 0);
  71     BOOST_TEST(fused_func_c2(lv_vec) == 0);
  72     BOOST_TEST(fused_func_ref(lv_vec) == 1);
  73     BOOST_TEST(fused_func_c_ref(lv_vec) == 0);
  74
  75     BOOST_TEST(fused_func(fusion::make_vector(2,'\003')) == 1);
  76     BOOST_TEST(fused_func_c(fusion::make_vector(2,'\003')) == 0);
  77     BOOST_TEST(fused_func_c2(fusion::make_vector(2,'\003')) == 0);
  78     BOOST_TEST(fused_func_ref(fusion::make_vector(2,'\003')) == 1);
  79     BOOST_TEST(fused_func_c_ref(fusion::make_vector(2,'\003')) == 0);
  80
  81     return boost::report_errors();
  82 }
  83