1 
2 #ifndef BOOST_MPL_AUX_MSVC_ETI_BASE_HPP_INCLUDED
3 #define BOOST_MPL_AUX_MSVC_ETI_BASE_HPP_INCLUDED
4 
5 // Copyright Aleksey Gurtovoy 2001-2004
6 //
7 // Distributed under the Boost Software License, Version 1.0.
8 // (See accompanying file LICENSE_1_0.txt or copy at
9 // http://www.boost.org/LICENSE_1_0.txt)
10 //
11 // See http://www.boost.org/libs/mpl for documentation.
12 
13 // $Id: msvc_eti_base.hpp 49267 2008-10-11 06:19:02Z agurtovoy $
14 // $Date: 2008-10-10 23:19:02 -0700 (Fri, 10 Oct 2008) $
15 // $Revision: 49267 $
16 
17 #include <boost/mpl/aux_/is_msvc_eti_arg.hpp>
18 #include <boost/mpl/aux_/config/eti.hpp>
19 #include <boost/mpl/aux_/config/gcc.hpp>
20 #include <boost/mpl/aux_/config/workaround.hpp>
21 
22 namespace boost { namespace mpl { namespace aux {
23 
24 #if defined(BOOST_MPL_CFG_MSVC_70_ETI_BUG)
25 
26 template< bool > struct msvc_eti_base_impl
27 {
28     template< typename T > struct result_
29         : T
30     {
31         typedef T type;
32     };
33 };
34 
35 template<> struct msvc_eti_base_impl<true>
36 {
37     template< typename T > struct result_
38     {
39         typedef result_ type;
40         typedef result_ first;
41         typedef result_ second;
42         typedef result_ tag;
43         enum { value = 0 };
44     };
45 };
46 
47 template< typename T > struct msvc_eti_base
48     : msvc_eti_base_impl< is_msvc_eti_arg<T>::value >
49         ::template result_<T>
50 {
51 };
52 
53 #else // !BOOST_MPL_CFG_MSVC_70_ETI_BUG
54 
55 template< typename T > struct msvc_eti_base
56     : T
57 {
58 #if BOOST_WORKAROUND(BOOST_MPL_CFG_GCC, BOOST_TESTED_AT(0x0304))
59     msvc_eti_base();
60 #endif
61     typedef T type;
62 };
63 
64 #endif
65 
66 template<> struct msvc_eti_base<int>
67 {
68     typedef msvc_eti_base type;
69     typedef msvc_eti_base first;
70     typedef msvc_eti_base second;
71     typedef msvc_eti_base tag;
72     enum { value = 0 };
73 };
74 
75 }}}
76 
77 #endif // BOOST_MPL_AUX_MSVC_ETI_BASE_HPP_INCLUDED
78