1 //////////////////////////////////////////////////////////////////////////////
2 //
3 // (C) Copyright David Abrahams, Vicente Botet, Ion Gaztanaga 2009.
4 // Distributed under the Boost Software License, Version 1.0.
5 // (See accompanying file LICENSE_1_0.txt or copy at
6 // http://www.boost.org/LICENSE_1_0.txt)
7 //
8 // See http://www.boost.org/libs/move for documentation.
9 //
10 //////////////////////////////////////////////////////////////////////////////
11
12 #include <boost/move/detail/config_begin.hpp>
13
14 //[construct_forward_example
15 #include <boost/move/utility_core.hpp>
16 #include <iostream>
17
18 class copyable_only_tester
19 {
20 public:
copyable_only_tester()21 copyable_only_tester()
22 { std::cout << "copyable_only_tester()" << std::endl; }
23
copyable_only_tester(const copyable_only_tester &)24 copyable_only_tester(const copyable_only_tester&)
25 { std::cout << "copyable_only_tester(const copyable_only_tester&)" << std::endl; }
26
copyable_only_tester(int)27 copyable_only_tester(int)
28 { std::cout << "copyable_only_tester(int)" << std::endl; }
29
copyable_only_tester(int,double)30 copyable_only_tester(int, double)
31 { std::cout << "copyable_only_tester(int, double)" << std::endl; }
32 };
33
34 class copyable_movable_tester
35 {
36 // move semantics
37 BOOST_COPYABLE_AND_MOVABLE(copyable_movable_tester)
38 public:
39
copyable_movable_tester()40 copyable_movable_tester()
41 { std::cout << "copyable_movable_tester()" << std::endl; }
42
copyable_movable_tester(int)43 copyable_movable_tester(int)
44 { std::cout << "copyable_movable_tester(int)" << std::endl; }
45
copyable_movable_tester(BOOST_RV_REF (copyable_movable_tester))46 copyable_movable_tester(BOOST_RV_REF(copyable_movable_tester))
47 { std::cout << "copyable_movable_tester(BOOST_RV_REF(copyable_movable_tester))" << std::endl; }
48
copyable_movable_tester(const copyable_movable_tester &)49 copyable_movable_tester(const copyable_movable_tester &)
50 { std::cout << "copyable_movable_tester(const copyable_movable_tester &)" << std::endl; }
51
copyable_movable_tester(BOOST_RV_REF (copyable_movable_tester),BOOST_RV_REF (copyable_movable_tester))52 copyable_movable_tester(BOOST_RV_REF(copyable_movable_tester), BOOST_RV_REF(copyable_movable_tester))
53 { std::cout << "copyable_movable_tester(BOOST_RV_REF(copyable_movable_tester), BOOST_RV_REF(copyable_movable_tester))" << std::endl; }
54
operator =(BOOST_RV_REF (copyable_movable_tester))55 copyable_movable_tester &operator=(BOOST_RV_REF(copyable_movable_tester))
56 { std::cout << "copyable_movable_tester & operator=(BOOST_RV_REF(copyable_movable_tester))" << std::endl;
57 return *this; }
58
operator =(BOOST_COPY_ASSIGN_REF (copyable_movable_tester))59 copyable_movable_tester &operator=(BOOST_COPY_ASSIGN_REF(copyable_movable_tester))
60 { std::cout << "copyable_movable_tester & operator=(BOOST_COPY_ASSIGN_REF(copyable_movable_tester))" << std::endl;
61 return *this; }
62 };
63
64 //1 argument
65 template<class MaybeMovable, class MaybeRv>
function_construct(BOOST_FWD_REF (MaybeRv)x)66 void function_construct(BOOST_FWD_REF(MaybeRv) x)
67 { MaybeMovable m(boost::forward<MaybeRv>(x)); }
68
69 //2 argument
70 template<class MaybeMovable, class MaybeRv, class MaybeRv2>
function_construct(BOOST_FWD_REF (MaybeRv)x,BOOST_FWD_REF (MaybeRv2)x2)71 void function_construct(BOOST_FWD_REF(MaybeRv) x, BOOST_FWD_REF(MaybeRv2) x2)
72 { MaybeMovable m(boost::forward<MaybeRv>(x), boost::forward<MaybeRv2>(x2)); }
73
main()74 int main()
75 {
76 copyable_movable_tester m;
77 //move constructor
78 function_construct<copyable_movable_tester>(boost::move(m));
79 //copy constructor
80 function_construct<copyable_movable_tester>(copyable_movable_tester());
81 //two rvalue constructor
82 function_construct<copyable_movable_tester>(boost::move(m), boost::move(m));
83
84 copyable_only_tester nm;
85 //copy constructor (copyable_only_tester has no move ctor.)
86 function_construct<copyable_only_tester>(boost::move(nm));
87 //copy constructor
88 function_construct<copyable_only_tester>(nm);
89 //int constructor
90 function_construct<copyable_only_tester>(int(0));
91 //int, double constructor
92 function_construct<copyable_only_tester>(int(0), double(0.0));
93
94 //Output is:
95 //copyable_movable_tester()
96 //copyable_movable_tester(BOOST_RV_REF(copyable_movable_tester))
97 //copyable_movable_tester()
98 //copyable_movable_tester(const copyable_movable_tester &)
99 //copyable_movable_tester(BOOST_RV_REF(copyable_movable_tester), BOOST_RV_REF(copyable_movable_tester))
100 //copyable_only_tester()
101 //copyable_only_tester(const copyable_only_tester&)
102 //copyable_only_tester(const copyable_only_tester&)
103 //copyable_only_tester(int)
104 //copyable_only_tester(int, double)
105 return 0;
106 }
107 //]
108
109 #include <boost/move/detail/config_end.hpp>
110