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1 | // (C) Copyright John Maddock 2005. |
2 | // Use, modification and distribution are subject to the | |
3 | // Boost Software License, Version 1.0. (See accompanying file | |
4 | // LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt) | |
5 | ||
6 | #ifdef TEST_STD_HEADERS | |
7 | #include <functional> | |
8 | #else | |
9 | #include <boost/tr1/functional.hpp> | |
10 | #endif | |
11 | ||
12 | #include <boost/static_assert.hpp> | |
13 | #include "verify_return.hpp" | |
14 | ||
15 | template <class T> | |
16 | void check_placeholder( T ) | |
17 | { | |
18 | T t; | |
19 | T t2(t); | |
20 | (void)t2; | |
21 | BOOST_STATIC_ASSERT( ::std::tr1::is_placeholder<T>::value > 0 ); | |
22 | } | |
23 | ||
24 | template <class Binder, class R> | |
25 | void check_bind0(Binder b, R r) | |
26 | { | |
27 | BOOST_STATIC_ASSERT(::std::tr1::is_bind_expression<Binder>::value); | |
28 | verify_return_type(b(), r); | |
29 | ||
30 | typedef typename Binder::result_type result_type; | |
31 | BOOST_STATIC_ASSERT((::boost::is_same<result_type, R>::value)); | |
32 | } | |
33 | ||
34 | template <class Binder, class R, class A1> | |
35 | void check_bind1(Binder b, R r, A1 a1) | |
36 | { | |
37 | BOOST_STATIC_ASSERT(::std::tr1::is_bind_expression<Binder>::value); | |
38 | verify_return_type(b(a1), r); | |
39 | } | |
40 | ||
41 | double test_proc(int a, char b, long c) | |
42 | { | |
43 | return a+b+c; | |
44 | } | |
45 | ||
46 | struct from_double | |
47 | { | |
48 | from_double(double){} | |
49 | }; | |
50 | ||
51 | ||
52 | int main() | |
53 | { | |
54 | check_placeholder(std::tr1::placeholders::_1); | |
55 | check_placeholder(std::tr1::placeholders::_2); | |
56 | check_placeholder(std::tr1::placeholders::_3); | |
57 | check_placeholder(std::tr1::placeholders::_4); | |
58 | check_placeholder(std::tr1::placeholders::_5); | |
59 | check_placeholder(std::tr1::placeholders::_6); | |
60 | check_placeholder(std::tr1::placeholders::_7); | |
61 | check_placeholder(std::tr1::placeholders::_8); | |
62 | check_placeholder(std::tr1::placeholders::_9); | |
63 | ||
64 | check_bind0(std::tr1::bind(&test_proc, 0, 0, 0), double(0)); | |
65 | check_bind0(std::tr1::bind<double>(&test_proc, 0, 0, 0), double(0)); | |
66 | check_bind1(std::tr1::bind(&test_proc, 0, 0, std::tr1::placeholders::_1), double(0), 0); | |
67 | check_bind1(std::tr1::bind(&test_proc, std::tr1::placeholders::_1, 0, 0), double(0), 0); | |
68 | ||
69 | check_bind0(std::tr1::bind(test_proc, 0, 0, 0), double(0)); | |
70 | check_bind0(std::tr1::bind<double>(test_proc, 0, 0, 0), double(0)); | |
71 | check_bind1(std::tr1::bind(test_proc, 0, 0, std::tr1::placeholders::_1), double(0), 0); | |
72 | check_bind1(std::tr1::bind(test_proc, std::tr1::placeholders::_1, 0, 0), double(0), 0); | |
73 | ||
74 | check_bind0(std::tr1::bind(std::plus<double>(), 0, 1), double(0)); | |
75 | check_bind0(std::tr1::bind<double>(std::plus<double>(), 1, 0), double(0)); | |
76 | check_bind0(std::tr1::bind<from_double>(std::plus<double>(), 1, 0), from_double(0)); | |
77 | check_bind1(std::tr1::bind(std::plus<double>(), 0, std::tr1::placeholders::_1), double(0), 0); | |
78 | check_bind1(std::tr1::bind(std::plus<double>(), std::tr1::placeholders::_1, 0), double(0), 0); | |
79 | return 0; | |
80 | } | |
81 |