1 // Boost.Convert test and usage example
2 // Copyright (c) 2009-2016 Vladimir Batov.
3 // Use, modification and distribution are subject to the Boost Software License,
4 // Version 1.0. See http://www.boost.org/LICENSE_1_0.txt.
5
6 #include "./test.hpp"
7
8 #if defined(BOOST_CONVERT_IS_NOT_SUPPORTED)
main(int,char const * [])9 int main(int, char const* []) { return 0; }
10 #else
11
12 #include <boost/convert.hpp>
13 #include <boost/convert/stream.hpp>
14 #include <boost/detail/lightweight_test.hpp>
15 #include <boost/function.hpp>
16 #include <boost/bind.hpp>
17
18 namespace { namespace local
19 {
20 bool called_functor_int;
21 bool called_functor_double;
22 bool called_functor_foo;
23 bool called_function_int;
24 bool called_function_long;
25 }}
26
operator ()functor_int27 struct functor_int { int operator() () const { local:: called_functor_int = true; return INT_MAX; }};
operator ()functor_double28 struct functor_double { double operator() () const { local::called_functor_double = true; return INT_MAX; }};
funcfunctor_foo29 struct functor_foo { int func (int) const { local:: called_functor_foo = true; return INT_MAX; }};
30
function_int()31 int function_int () { local:: called_function_int = true; return INT_MAX; }
function_long()32 long function_long () { local::called_function_long = true; return INT_MAX; }
33
34 int
main(int,char const * [])35 main(int, char const* [])
36 {
37 boost::cnv::cstream cnv;
38 functor_foo foo;
39
40 int i01 = boost::convert<int>("uhm", cnv).value_or_eval(functor_int());
41 int i02 = boost::convert<int>("uhm", cnv).value_or_eval(functor_double());
42 int i03 = boost::convert<int>("uhm", cnv).value_or_eval(boost::bind(&functor_foo::func, foo, 0));
43 int i04 = boost::convert<int>("uhm", cnv).value_or_eval(function_int);
44 int i05 = boost::convert<int>("uhm", cnv).value_or_eval(function_long);
45
46 BOOST_TEST(local:: called_functor_int && i01 == INT_MAX);
47 BOOST_TEST(local::called_functor_double && i02 == INT_MAX);
48 BOOST_TEST(local:: called_functor_foo && i03 == INT_MAX);
49 BOOST_TEST(local:: called_function_int && i04 == INT_MAX);
50 BOOST_TEST(local:: called_function_long && i05 == INT_MAX);
51
52 local:: called_functor_int = false;
53 local::called_functor_double = false;
54 local:: called_functor_foo = false;
55 local:: called_function_int = false;
56 local:: called_function_long = false;
57
58 boost::convert<int>("uhm", cnv, functor_int());
59 boost::convert<int>("uhm", cnv, functor_double());
60 boost::convert<int>("uhm", cnv, boost::bind(&functor_foo::func, foo, 0));
61 boost::convert<int>("uhm", cnv, function_int);
62 boost::convert<int>("uhm", cnv, function_long);
63
64 BOOST_TEST(local:: called_functor_int && i01 == INT_MAX);
65 BOOST_TEST(local::called_functor_double && i02 == INT_MAX);
66 BOOST_TEST(local:: called_functor_foo && i03 == INT_MAX);
67 BOOST_TEST(local:: called_function_int && i04 == INT_MAX);
68 BOOST_TEST(local:: called_function_long && i05 == INT_MAX);
69
70 try
71 {
72 boost::convert<int>("uhm", cnv, boost::throw_on_failure);
73 BOOST_TEST(0);
74 }
75 catch (boost::bad_optional_access const&)
76 {
77 }
78 return boost::report_errors();
79 }
80
81 #endif
82