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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_REMOVE_POINTER_HPP_INCLUDED | |
10 | #define BOOST_TT_REMOVE_POINTER_HPP_INCLUDED | |
11 | ||
12 | #include <boost/config.hpp> | |
13 | ||
14 | #if defined(BOOST_MSVC) | |
15 | #include <boost/type_traits/remove_cv.hpp> | |
16 | #include <boost/type_traits/is_pointer.hpp> | |
17 | #endif | |
18 | ||
19 | namespace boost { | |
20 | ||
21 | #if BOOST_WORKAROUND(BOOST_MSVC, < 1900) | |
22 | ||
23 | namespace detail{ | |
24 | ||
25 | // | |
26 | // We need all this crazy indirection because a type such as: | |
27 | // | |
28 | // T (*const)(U) | |
29 | // | |
30 | // Does not bind to a <T*> or <T*const> partial specialization with VC10 and earlier | |
31 | // | |
32 | template <class T> | |
33 | struct remove_pointer_imp | |
34 | { | |
35 | typedef T type; | |
36 | }; | |
37 | ||
38 | template <class T> | |
39 | struct remove_pointer_imp<T*> | |
40 | { | |
41 | typedef T type; | |
42 | }; | |
43 | ||
44 | template <class T, bool b> | |
45 | struct remove_pointer_imp3 | |
46 | { | |
47 | typedef typename remove_pointer_imp<typename boost::remove_cv<T>::type>::type type; | |
48 | }; | |
49 | ||
50 | template <class T> | |
51 | struct remove_pointer_imp3<T, false> | |
52 | { | |
53 | typedef T type; | |
54 | }; | |
55 | ||
56 | template <class T> | |
57 | struct remove_pointer_imp2 | |
58 | { | |
59 | typedef typename remove_pointer_imp3<T, ::boost::is_pointer<T>::value>::type type; | |
60 | }; | |
61 | } | |
62 | ||
63 | template <class T> struct remove_pointer{ typedef typename boost::detail::remove_pointer_imp2<T>::type type; }; | |
64 | ||
65 | #else | |
66 | ||
67 | template <class T> struct remove_pointer{ typedef T type; }; | |
68 | template <class T> struct remove_pointer<T*>{ typedef T type; }; | |
69 | template <class T> struct remove_pointer<T*const>{ typedef T type; }; | |
70 | template <class T> struct remove_pointer<T*volatile>{ typedef T type; }; | |
71 | template <class T> struct remove_pointer<T*const volatile>{ typedef T type; }; | |
72 | ||
73 | #endif | |
74 | ||
75 | } // namespace boost | |
76 | ||
77 | #endif // BOOST_TT_REMOVE_POINTER_HPP_INCLUDED |