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7c673cae FG |
1 | |
2 | // (C) Copyright Steve Cleary, Beman Dawes, Howard Hinnant & John Maddock 2000. | |
3 | // Use, modification and distribution are subject to the Boost Software License, | |
4 | // Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at | |
5 | // http://www.boost.org/LICENSE_1_0.txt). | |
6 | // | |
7 | // See http://www.boost.org/libs/type_traits for most recent version including documentation. | |
8 | ||
9 | #ifndef BOOST_TT_ADD_POINTER_HPP_INCLUDED | |
10 | #define BOOST_TT_ADD_POINTER_HPP_INCLUDED | |
11 | ||
12 | #include <boost/type_traits/remove_reference.hpp> | |
13 | ||
14 | namespace boost { | |
15 | ||
16 | #if defined(__BORLANDC__) && (__BORLANDC__ < 0x5A0) | |
17 | // | |
18 | // For some reason this implementation stops Borlands compiler | |
19 | // from dropping cv-qualifiers, it still fails with references | |
20 | // to arrays for some reason though (shrug...) (JM 20021104) | |
21 | // | |
22 | template <typename T> | |
23 | struct add_pointer | |
24 | { | |
25 | typedef T* type; | |
26 | }; | |
27 | template <typename T> | |
28 | struct add_pointer<T&> | |
29 | { | |
30 | typedef T* type; | |
31 | }; | |
32 | template <typename T> | |
33 | struct add_pointer<T&const> | |
34 | { | |
35 | typedef T* type; | |
36 | }; | |
37 | template <typename T> | |
38 | struct add_pointer<T&volatile> | |
39 | { | |
40 | typedef T* type; | |
41 | }; | |
42 | template <typename T> | |
43 | struct add_pointer<T&const volatile> | |
44 | { | |
45 | typedef T* type; | |
46 | }; | |
47 | ||
48 | #else | |
49 | ||
50 | template <typename T> | |
51 | struct add_pointer | |
52 | { | |
53 | typedef typename remove_reference<T>::type no_ref_type; | |
54 | typedef no_ref_type* type; | |
55 | }; | |
56 | ||
57 | #endif | |
58 | ||
b32b8144 FG |
59 | #if !defined(BOOST_NO_CXX11_TEMPLATE_ALIASES) |
60 | ||
61 | template <class T> using add_pointer_t = typename add_pointer<T>::type; | |
62 | ||
63 | #endif | |
64 | ||
7c673cae FG |
65 | } // namespace boost |
66 | ||
67 | #endif // BOOST_TT_ADD_POINTER_HPP_INCLUDED |