boost/typeof/native.hpp

   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/is_function.hpp>
  22 #include <boost/utility/enable_if.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>, T&>::type
  31         ensure_obj(T&);
  32
  33     template<typename T>
  34         typename disable_if<is_function<T>, 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