1 // Copyright (C) 2006 Arkadiy Vertleyb
2 // Use, modification and distribution is subject to the Boost Software
3 // License, Version 1.0. (http://www.boost.org/LICENSE_1_0.txt)
4 
5 #ifndef BOOST_TYPEOF_NATIVE_HPP_INCLUDED
6 #define BOOST_TYPEOF_NATIVE_HPP_INCLUDED
7 
8 #ifndef MSVC_TYPEOF_HACK
9 
10 #ifdef BOOST_NO_SFINAE
11 
12 namespace boost { namespace type_of {
13 
14     template<class T>
15         T& ensure_obj(const T&);
16 
17 }}
18 
19 #else
20 
21 #include <boost/type_traits/enable_if.hpp>
22 #include <boost/type_traits/is_function.hpp>
23 
24 namespace boost { namespace type_of {
25 # ifdef BOOST_NO_SFINAE
26     template<class T>
27     T& ensure_obj(const T&);
28 # else
29     template<typename T>
30         typename enable_if_<is_function<T>::value, T&>::type
31         ensure_obj(T&);
32 
33     template<typename T>
34         typename enable_if_<!is_function<T>::value, T&>::type
35         ensure_obj(const T&);
36 # endif
37 }}
38 
39 #endif//BOOST_NO_SFINAE
40 
41 #define BOOST_TYPEOF(expr) BOOST_TYPEOF_KEYWORD(boost::type_of::ensure_obj(expr))
42 #define BOOST_TYPEOF_TPL BOOST_TYPEOF
43 
44 #define BOOST_TYPEOF_NESTED_TYPEDEF_TPL(name,expr) \
45     struct name {\
46         typedef BOOST_TYPEOF_TPL(expr) type;\
47     };
48 
49 #define BOOST_TYPEOF_NESTED_TYPEDEF(name,expr) \
50     struct name {\
51         typedef BOOST_TYPEOF(expr) type;\
52     };
53 
54 #endif//MSVC_TYPEOF_HACK
55 
56 #define BOOST_TYPEOF_REGISTER_TYPE(x)
57 #define BOOST_TYPEOF_REGISTER_TEMPLATE(x, params)
58 
59 #endif//BOOST_TYPEOF_NATIVE_HPP_INCLUDED
60 
61