1/*=============================================================================
2 Copyright (c) 2017 Paul Fultz II
3 combine.cpp
4 Distributed under the Boost Software License, Version 1.0. (See accompanying
5 file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
6==============================================================================*/
7#include <boost/hof/combine.hpp>
8#include "test.hpp"
9
10#include <boost/hof/construct.hpp>
11#include <boost/hof/capture.hpp>
12#include <utility>
13#include <tuple>
14
15template<class T, class U>
16struct mini_pair
17{
18 T first;
19 U second;
20
21 template<class X, class Y>
22 constexpr mini_pair(X&& x, Y&& y)
23 : first(boost::hof::forward<X>(x)), second(boost::hof::forward<Y>(y))
24 {}
25};
26
27template<class T1, class U1, class T2, class U2>
28constexpr bool operator==(const mini_pair<T1, U1>& x, const mini_pair<T2, U2>& y)
29{
30 return x.first == y.first && x.second == y.second;
31}
32
33template<class T, class U>
34constexpr mini_pair<T, U> make_mini_pair(T x, U y)
35{
36 return mini_pair<T, U>(x, y);
37}
38
39BOOST_HOF_TEST_CASE()
40{
41 BOOST_HOF_TEST_CHECK(
42 boost::hof::combine(
43 boost::hof::construct<std::tuple>(),
44 boost::hof::capture_basic(1)(boost::hof::construct<std::pair>()),
45 boost::hof::capture_basic(2)(boost::hof::construct<std::pair>())
46 )(2, 4)
47 == std::make_tuple(std::make_pair(1, 2), std::make_pair(2, 4)));
48}
49
50BOOST_HOF_TEST_CASE()
51{
52 BOOST_HOF_TEST_CHECK(
53 boost::hof::combine(
54 boost::hof::construct<mini_pair>(),
55 boost::hof::capture_basic(1)(boost::hof::construct<mini_pair>()),
56 boost::hof::capture_basic(2)(boost::hof::construct<mini_pair>())
57 )(2, 4)
58 == make_mini_pair(make_mini_pair(1, 2), make_mini_pair(2, 4)));
59
60 BOOST_HOF_STATIC_TEST_CHECK(
61 boost::hof::combine(
62 boost::hof::construct<mini_pair>(),
63 boost::hof::capture_basic(1)(boost::hof::construct<mini_pair>()),
64 boost::hof::capture_basic(2)(boost::hof::construct<mini_pair>())
65 )(2, 4)
66 == make_mini_pair(make_mini_pair(1, 2), make_mini_pair(2, 4)));
67}
68
69
70
71
72

source code of boost/libs/hof/test/combine.cpp