boost/typeof/native.hpp

// Copyright (C) 2006 Arkadiy Vertleyb
// Use, modification and distribution is subject to the Boost Software
// License, Version 1.0. (http://www.boost.org/LICENSE_1_0.txt)
#ifndef BOOST_TYPEOF_NATIVE_HPP_INCLUDED
#define BOOST_TYPEOF_NATIVE_HPP_INCLUDED
#ifndef MSVC_TYPEOF_HACK
#ifdef BOOST_NO_SFINAE
namespace boost { namespace type_of {
    template<class T> 
        T& ensure_obj(const T&);
}}
#else
#include <boost/type_traits/is_function.hpp> 
#include <boost/utility/enable_if.hpp>
namespace boost { namespace type_of {
# ifdef BOOST_NO_SFINAE
    template<class T> 
    T& ensure_obj(const T&);
# else
    template<typename T>
        typename enable_if<is_function<T>, T&>::type
        ensure_obj(T&);
    template<typename T>
        typename disable_if<is_function<T>, T&>::type
        ensure_obj(const T&);
# endif
}}
#endif//BOOST_NO_SFINAE
#define BOOST_TYPEOF(expr) BOOST_TYPEOF_KEYWORD(boost::type_of::ensure_obj(expr))
#define BOOST_TYPEOF_TPL BOOST_TYPEOF
#define BOOST_TYPEOF_NESTED_TYPEDEF_TPL(name,expr) \
    struct name {\
        typedef BOOST_TYPEOF_TPL(expr) type;\
    };
#define BOOST_TYPEOF_NESTED_TYPEDEF(name,expr) \
    struct name {\
        typedef BOOST_TYPEOF(expr) type;\
    };
#endif//MSVC_TYPEOF_HACK
#define BOOST_TYPEOF_REGISTER_TYPE(x)
#define BOOST_TYPEOF_REGISTER_TEMPLATE(x, params)
#endif//BOOST_TYPEOF_NATIVE_HPP_INCLUDED