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// should be the last #include
15#include <boost/type_traits/detail/type_trait_def.hpp>
16
17namespace boost {
18
19namespace detail {
20
21#if defined(__BORLANDC__) && (__BORLANDC__ < 0x5A0)
22//
23// For some reason this implementation stops Borlands compiler
24// from dropping cv-qualifiers, it still fails with references
25// to arrays for some reason though (shrug...) (JM 20021104)
26//
27template <typename T>
28struct add_pointer_impl
29{
30 typedef T* type;
31};
32template <typename T>
33struct add_pointer_impl<T&>
34{
35 typedef T* type;
36};
37template <typename T>
38struct add_pointer_impl<T&const>
39{
40 typedef T* type;
41};
42template <typename T>
43struct add_pointer_impl<T&volatile>
44{
45 typedef T* type;
46};
47template <typename T>
48struct add_pointer_impl<T&const volatile>
49{
50 typedef T* type;
51};
52
53#else
54
55template <typename T>
56struct add_pointer_impl
57{
58 typedef typename remove_reference<T>::type no_ref_type;
59 typedef no_ref_type* type;
60};
61
62#endif
63
64} // namespace detail
65
66BOOST_TT_AUX_TYPE_TRAIT_DEF1(add_pointer,T,typename boost::detail::add_pointer_impl<T>::type)
67
68} // namespace boost
69
70#include <boost/type_traits/detail/type_trait_undef.hpp>
71
72#endif // BOOST_TT_ADD_POINTER_HPP_INCLUDED
73