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 
operator ()example::impl::what31       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 
operator ()example::impl::what042       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 
main()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 }
69