ceph/src/boost/libs/phoenix/test/function/lazy_templated_struct_tests.cpp

   1 ////////////////////////////////////////////////////////////////////////////
   2 // lazy_templated_struct_tests.cpp
   3 //
   4 // lazy templated struct test to check this works everywhere.
   5 //
   6 ////////////////////////////////////////////////////////////////////////////
   7 /*=============================================================================
   8     Copyright (c) 2001-2007 Joel de Guzman
   9     Copyright (c) 2015 John Fletcher
  10
  11     Distributed under the Boost Software License, Version 1.0. (See accompanying
  12     file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
  13 ==============================================================================*/
  14
  15 #include <boost/phoenix/core/limits.hpp>
  16
  17 #include <boost/detail/lightweight_test.hpp>
  18 #include <boost/phoenix/core.hpp>
  19 #include <boost/phoenix/function.hpp>
  20 #include <boost/function.hpp>
  21
  22 namespace example {
  23
  24   namespace impl {
  25     // Example of templated struct.
  26     template <typename Result>
  27     struct what {
  28
  29       typedef Result result_type;
  30
  31       Result operator()(Result const & r) const
  32       {
  33         return r;
  34       }
  35     };
  36
  37     template <typename Result>
  38     struct what0 {
  39
  40       typedef Result result_type;
  41
  42       Result operator()() const
  43       {
  44         return Result(100);
  45       }
  46
  47     };
  48
  49   }
  50
  51   boost::function1<int, int > what_int = impl::what<int>();
  52   boost::function0<int> what0_int = impl::what0<int>();
  53   BOOST_PHOENIX_ADAPT_FUNCTION(int,what,what_int,1)
  54   BOOST_PHOENIX_ADAPT_FUNCTION_NULLARY(int,what0,what0_int)
  55 }
  56
  57 int main()
  58 {
  59     int a = 99;
  60     using boost::phoenix::arg_names::arg1;
  61     BOOST_TEST(example::what_int(a) == a);
  62     BOOST_TEST(example::what(a)() == a);
  63     BOOST_TEST(example::what(arg1)(a) == a);
  64     BOOST_TEST(example::what0_int() == 100);
  65     BOOST_TEST(example::what0()() == 100);
  66
  67     return boost::report_errors();
  68 }