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1 | ||
2 | // (C) Copyright Dave Abrahams, Steve Cleary, Beman Dawes, | |
3 | // Howard Hinnant and John Maddock 2000. | |
4 | // (C) Copyright Mat Marcus, Jesse Jones and Adobe Systems Inc 2001 | |
5 | ||
6 | // Use, modification and distribution are subject to the Boost Software License, | |
7 | // Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at | |
8 | // http://www.boost.org/LICENSE_1_0.txt). | |
9 | // | |
10 | // See http://www.boost.org/libs/type_traits for most recent version including documentation. | |
11 | ||
12 | // Fixed is_pointer, is_reference, is_const, is_volatile, is_same, | |
13 | // is_member_pointer based on the Simulated Partial Specialization work | |
14 | // of Mat Marcus and Jesse Jones. See http://opensource.adobe.com or | |
15 | // http://groups.yahoo.com/group/boost/message/5441 | |
16 | // Some workarounds in here use ideas suggested from "Generic<Programming>: | |
17 | // Mappings between Types and Values" | |
18 | // by Andrei Alexandrescu (see http://www.cuj.com/experts/1810/alexandr.html). | |
19 | ||
20 | ||
21 | #ifndef BOOST_TT_IS_POINTER_HPP_INCLUDED | |
22 | #define BOOST_TT_IS_POINTER_HPP_INCLUDED | |
23 | ||
24 | #include <boost/type_traits/integral_constant.hpp> | |
25 | ||
26 | namespace boost { | |
27 | ||
28 | #if defined( __CODEGEARC__ ) | |
29 | template <class T> struct is_pointer : public integral_constant<bool, __is_pointer(T)>{}; | |
30 | #else | |
31 | template <class T> struct is_pointer : public false_type{}; | |
32 | template <class T> struct is_pointer<T*> : public true_type{}; | |
33 | template <class T> struct is_pointer<T*const> : public true_type{}; | |
34 | template <class T> struct is_pointer<T*const volatile> : public true_type{}; | |
35 | template <class T> struct is_pointer<T*volatile> : public true_type{}; | |
36 | ||
37 | #ifdef BOOST_MSVC | |
38 | template <class T> struct is_pointer<T const> : public is_pointer<T>{}; | |
39 | template <class T> struct is_pointer<T const volatile> : public is_pointer<T>{}; | |
40 | template <class T> struct is_pointer<T volatile> : public is_pointer<T>{}; | |
41 | #endif | |
42 | ||
43 | #endif | |
44 | ||
45 | } // namespace boost | |
46 | ||
47 | #endif // BOOST_TT_IS_POINTER_HPP_INCLUDED |