| 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(BOOST_BORLANDC) && (BOOST_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 | |
|---|
| 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 | |
|---|
| 65 | } // namespace boost |
|---|
| 66 | |
|---|
| 67 | #endif // BOOST_TT_ADD_POINTER_HPP_INCLUDED |
|---|
| 68 | |
|---|
